Decode the downlink control information in the combined physical downlink control channel candidate

Abstract

Methods, systems, and apparatus for wireless communications are described. The described techniques can be used to identify when decoded downlink control information (DCI) is from a combined search space set (e.g., a physical downlink control channel (PDCCH) candidate from a first search space set and a PDCCH candidate from a second search space set). A UE can receive DCI from a base station that identifies PDCCH candidates from the first search space set, the second search space set, and a combined PDCCH candidate from the first and second search space sets. The UE can decode the DCI and, based on various characteristics, identify that the decoded DCI corresponds to a combined PDCCH candidate. Based on identifying that the DCI is from a combined PDCCH candidate, the UE and the base station can identify various communication channel characteristics, such as PDSCH, PUSCH, and PUCCH scheduling information, or rate matching information.

Description

[0001] Cross-references

[0002] This patent application claims the benefit of U.S. Provisional Patent Application No. 62 / 952,209, filed by Khoshnevisan et al. on December 20, 2019, entitled “Decoding Downlink Control Information in a Combined Physical Downlink Control Channel Candidate,” and U.S. Patent Application No. 17 / 118,146, filed by Khoshnevisan et al. on December 10, 2020, entitled “Decoding Downlink Control Information in a Combined Physical Downlink Control Channel Candidate,” each of which is assigned to the assignee of this application. Technical Field

[0003] The following relates generally to wireless communications, and more particularly to decoding downlink control information in a combined physical downlink control channel (PDCCH) candidate. Background Art

[0004] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, broadcast, and the like. These systems may be able to support communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple access systems include fourth generation (4G) systems (such as long term evolution (LTE) systems, advanced LTE (LTE-A) systems, or LTE-A Pro systems), and fifth generation (5G) systems, which may be referred to as new radio (NR) systems. These systems may employ various technologies, such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency division multiple access (OFDMA), or discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM). A wireless multiple access communication system may include one or more base stations or one or more network access nodes, each base station or network access node simultaneously supporting communication with multiple communication devices, which may be further referred to as user equipment (UE). A wireless multiple-access communication system may include one or more base stations or one or more network access nodes, each of which simultaneously supports communication for multiple communication devices, which may also be referred to as user equipment (UE).

[0005] Overview

[0006] Various aspects of the described techniques relate to supporting repetition of physical downlink control channel (PDCCH) information in fifth generation (5G) systems. The described techniques can be used to identify when decoded downlink control information (DCI) comes from a combined search space set (e.g., a PDCCH candidate from a first search space set and a PDCCH candidate from a second search space set). A UE can receive DCI from a base station, identifying one or more PDCCH candidates from a first search space set or a second search space set, or a combined PDCCH candidate from a first and a second search space set (or a combined candidate from one or more search space sets), or any combination thereof. The UE can decode the DCI and identify that the DCI corresponds to a combined PDCCH candidate based on one or more characteristics. Based on identifying that the DCI comes from a combined PDCCH candidate, the UE and the base station can identify one or more various communication channel characteristics, such as PDSCH, PUSCH and PUCCH scheduling information, rate matching information, etc.

[0007] A method for wireless communication at a UE is described. The method may include receiving downlink control information from a base station; identifying a first physical downlink control channel candidate, a second physical downlink control channel candidate, and a combined physical downlink control channel; decoding the downlink control information from at least one of the first physical downlink control channel candidate, the second physical downlink control channel candidate, and the combined physical downlink control channel candidate based on the identification; identifying that the downlink control information corresponds to the combined physical downlink control channel candidate; and communicating with the base station based on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate.

[0008] An apparatus for wireless communication at a UE is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to: receive downlink control information from a base station; identify a first physical downlink control channel candidate, a second physical downlink control channel candidate, and a combined physical downlink control channel candidate; decode the downlink control information from at least one of the first physical downlink control channel candidate, the second physical downlink control channel candidate, and the combined physical downlink control channel candidate based on the identification; identify that the downlink control information corresponds to the combined physical downlink control channel candidate; and communicate with the base station based on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate.

[0009] Another apparatus for wireless communication at a UE is described. The apparatus may include means for: receiving downlink control information from a base station; identifying a first physical downlink control channel candidate, a second physical downlink control channel candidate, and a combined physical downlink control channel; decoding the downlink control information from at least one of the first physical downlink control channel candidate, the second physical downlink control channel candidate, and the combined physical downlink control channel candidate based on the identification; identifying that the downlink control information corresponds to the combined physical downlink control channel candidate; and communicating with the base station based on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate.

[0010] A non-transitory computer-readable medium storing code for wireless communication at a UE is described. The code may include instructions executable by a processor to: receive downlink control information from a base station; identify a first physical downlink control channel candidate, a second physical downlink control channel candidate, and a combined physical downlink control channel candidate; decode the downlink control information from at least one of the first physical downlink control channel candidate, the second physical downlink control channel candidate, and the combined physical downlink control channel candidate based on the identification; identify that the downlink control information corresponds to the combined physical downlink control channel candidate; and communicate with the base station based on the identification that the downlink control information corresponds to the combined physical downlink control channel candidate.

[0011] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for identifying an indication in the downlink control information that the downlink control information corresponds to a combined physical downlink control channel candidate.

[0012] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, the indication includes a bit indicating that the downlink control information corresponds to a combined physical downlink control channel candidate.

[0013] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, identifying an indication in the downlink control information may include operations, features, apparatus, or instructions for performing a cyclic redundancy check of the downlink control information using a radio network temporary identifier indicating that the downlink control information corresponds to a combined physical downlink control channel candidate.

[0014] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, identifying a first physical downlink control channel candidate, a second physical downlink control channel candidate, and a combined physical downlink control channel candidate may include operations, features, apparatus, or instructions for identifying a first physical downlink control channel candidate in a first search space set, a second physical downlink control channel candidate in a second search space set, and a combined physical downlink control channel candidate in the first search space set and the second search space set.

[0015] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, decoding the downlink control information may include operations, features, apparatus, or instructions for decoding the downlink control information using at least a scrambling identifier indicating that the downlink control information corresponds to a combined physical downlink control channel candidate.

[0016] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, using a scrambling identifier to decode the downlink control information may include operations, features, apparatus, or instructions for descrambling a demodulation reference signal and decoded bits of the downlink control information using a scrambling identifier indicating that the downlink control information corresponds to a combined physical downlink control channel candidate.

[0017] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for identifying that the downlink control information corresponds to a combined physical downlink control channel candidate based at least in part on a configuration indicating that the first physical downlink control channel candidate is associated with the second physical downlink control channel candidate.

[0018] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for: identifying a starting position of a physical downlink shared channel based on identifying that the downlink control information corresponds to a combined physical downlink control channel candidate, and receiving the physical downlink shared channel based on the starting position.

[0019] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, identifying the starting position may include operations, features, apparatus, or instructions for the following actions: identifying that the starting position may be during or after a first codeword in a later search space set in a first search space set or a second search space set.

[0020] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, identifying the starting position may include operations, features, apparatus, or instructions for the following actions: identifying the starting position may be during or after a first codeword of an earlier search space set in the first search space set and the second search space set, during or after a first codeword of a search space set with a minimum index in the first search space set or the second search space set, or during or after a first codeword of a search space set with a minimum identifier in the first search space set and the second search space set.

[0021] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for identifying a reference symbol for identifying a starting position of a physical downlink shared channel based on identifying that the downlink control information corresponds to a combined physical downlink control channel candidate.

[0022] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, identifying the reference symbol may include operations, features, apparatus, or instructions for identifying a first symbol in the later of a first search space set and a second search space set.

[0023] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, identifying the reference symbol may include operations, features, apparatus, or instructions for identifying the first symbol in the earlier of the first search space set and the second search space set, the first symbol in the search space set with the smallest index in the first search space set or the second search space set, or the first symbol in the control resource set with the smallest identifier in the first control resource set and the second control resource set.

[0024] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for identifying a downlink control information format for decoded downlink control information, wherein identifying the reference symbol may be based on identifying the downlink control information format.

[0025] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for: identifying a starting position of a physical downlink shared channel based on the reference symbol, and receiving the physical downlink shared channel based on the identified starting position.

[0026] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for: identifying a reference time slot based on a later time slot of a first search space set and a second search space set based on identifying that the downlink control information corresponds to a combined physical downlink control channel candidate, and identifying a starting position of a physical downlink shared channel based on the reference time slot.

[0027] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, identifying the starting position may further include operations, features, apparatus, or instructions for: identifying a resource allocation field in the downlink control information, wherein the starting position of the physical downlink shared channel may be identified using a value of the resource allocation field relative to the reference time slot.

[0028] Some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for receiving a physical downlink shared channel based at least in part on the identified starting location.

[0029] Some examples of the methods, apparatus (devices) and non-transitory computer-readable media described herein may further include operations, features, apparatuses or instructions for the following actions: identifying a reference symbol based on the last symbol of the later of the first search space set and the second search space set, identifying an offset between the reference symbol and a physical downlink shared channel scheduled by the decoded downlink control information, and comparing the offset with a UE capability threshold to determine whether to use a default setting or a setting indicated by the downlink control information to receive the physical downlink shared channel.

[0030] In some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein, the default setting and the setting indicated by the downlink control information correspond to respective receive beams for receiving a physical downlink shared channel.

[0031] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for: determining, based on the comparison, that the offset may be less than a UE capability threshold, to use default settings to receive a physical downlink shared channel.

[0032] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for determining to use the setting indicated by the downlink control information based on the comparison and determining that the offset may be greater than a UE capability threshold.

[0033] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for: identifying a reference time slot based on a later time slot of a first search space set and a second search space set based on identifying that the downlink control information corresponds to a combined physical downlink control channel candidate, and identifying a starting position of a physical uplink shared channel based on the reference time slot.

[0034] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, identifying the starting position may further include operations, features, apparatus, or instructions for: identifying a resource allocation field included in the decoded downlink control information, wherein the starting position may be identified relative to the reference time slot based on a value of the resource allocation field.

[0035] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for the following actions: identifying a reference symbol based on the last symbol of the later search space set in the first search space set and the second search space set based on identifying that the downlink control information corresponds to a combined physical downlink control channel candidate, and identifying that the scheduled physical uplink control channel starts several symbols after the reference symbol.

[0036] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, the number of symbols may be determined based on the capabilities of the UE.

[0037] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for the following actions: identifying a physical downlink shared channel scheduled by the downlink control information based on identifying that the downlink control information corresponds to a combined physical downlink control channel candidate, and rate matching can be performed around resources corresponding to the downlink control information in the first search space set and the second search space set.

[0038] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for the following actions: identifying that the downlink control information corresponds to a combined physical downlink control channel candidate based on identifying that the downlink control information can be rate matched around resources corresponding to the downlink control information in a first physical downlink control channel candidate and a second physical downlink control channel candidate.

[0039] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for identifying a precoder granularity for a control resource set associated with a first search space set or a second search space set, and identifying that a physical downlink shared channel based on the precoder granularity may further be rate matched around one or more demodulation reference signals.

[0040] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, when the precoder granularity indicates contiguous resource blocks of a control resource set, the one or more demodulation reference signals correspond to resource element groups of the control resource set.

[0041] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, when the precoder granularity does not indicate contiguous resource blocks of a control resource set, the one or more demodulation reference signals correspond to a group of resource elements that combine physical downlink control channel candidates.

[0042] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for the following actions: identifying that the downlink control information does not include a transmission configuration indicator status field indicating a transmission configuration indicator status of a physical downlink shared channel scheduled by the downlink control information, and identifying whether a first control resource set corresponding to a first search space set can be the same control resource set as a second control resource set corresponding to a second search space set based on identifying that the downlink control information corresponds to a combined physical downlink control channel candidate and identifying that the downlink control information does not include the transmission configuration indicator status field.

[0043] Some examples of the methods, apparatus (devices) and non-transitory computer-readable media described herein may further include operations, features, apparatuses or instructions for identifying a transmission configuration indicator state, quasi-co-location, or both of a scheduled physical downlink shared channel based on identifying that the first control resource set corresponds to the second control resource set and according to the first control resource set or the second control resource set corresponding to the combined physical downlink shared channel candidate.

[0044] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for determining whether an offset between the downlink control information and the corresponding physical downlink shared channel may be greater than or equal to a UE capability threshold, wherein the transmission configuration indicator state, quasi-co-location, or both may be identified based on determining that the offset may be greater than the UE capability threshold.

[0045] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for identifying a transmission configuration indicator state, quasi-co-location, or both for a scheduled physical downlink shared channel according to a first control resource set or a second control resource set based on identifying that the first control resource set may be different from the second control resource set.

[0046] Some examples of the methods, apparatus (devices) and non-transitory computer-readable media described herein may further include operations, features, apparatuses or instructions for identifying a transmission configuration indicator state, quasi-co-location or both of a scheduled physical downlink shared channel according to a first control resource set or a second control resource set based on: a lower control resource set identifier of the first control resource set and the second control resource set, a higher control resource set identifier of the first control resource set and the second control resource set, a lower search space set identifier of the first search space set and the second search space set, a higher search space set identifier of the first search space set and the second search space set, a starting position of the first search space set and the second search space set, an ending position of the first search space set or the second search space set, or any combination thereof.

[0047] Some examples of the methods, apparatus (devices) and non-transitory computer-readable media described herein may further include operations, features, apparatuses or instructions for identifying a transmission configuration indicator state, quasi-co-location, or both of a scheduled physical downlink shared channel according to a first control resource set and a second control resource set based on identifying that the first control resource set may be different from the second control resource set.

[0048] In some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein, the transmission configuration indicator state, quasi-colocation, or both corresponds to a multi-beam or multi-transmission configuration indicator state physical downlink shared channel based on the identification.

[0049] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for identifying resources of a physical uplink control channel based on a number of control channel elements and a starting control channel element index from a first control resource set corresponding to a first search space set or from a second control resource set corresponding to a second search space set based on identifying that the downlink control information corresponds to a combined physical downlink control channel candidate.

[0050] Some examples of the methods, apparatus (devices) and non-transitory computer-readable media described herein may further include operations, features, apparatuses or instructions for the following actions: identifying resources of a physical uplink control channel according to the number of control channel elements and the starting control channel element index from the first control resource set or the second control resource set based on: a lower control resource set identifier of the first control resource set and the second control resource set, a higher control resource set identifier of the first control resource set and the second control resource set, a lower search space set identifier of the first search space set and the second search space set, a higher search space set identifier of the first search space set and the second search space set, a starting position of the first search space set and the second search space set, an ending position of the first search space set or the second search space set, or any combination thereof.

[0051] Some examples of the methods, apparatus (devices) and non-transitory computer-readable media described herein may further include operations, features, apparatuses or instructions for the following actions: identifying resources of a physical uplink control channel based on the number of control channel elements and the starting control channel element index from both a first control resource set corresponding to a first search space set and a second control resource set corresponding to a second search space set based on identifying that the downlink control information corresponds to a combined physical downlink control channel candidate.

[0052] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for the following actions: identifying a first control resource set pool index corresponding to a first search space set based on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate, which may be different from a second control resource set pool index corresponding to a second search space set.

[0053] Some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for the following actions: based on identifying that the first control resource pool index and the second control resource pool index may be different, identifying a hybrid automatic repeat request acknowledgment codebook based on the first control resource pool index or the second control resource pool index.

[0054] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for the following actions: identifying a fixed control resource pool index value for a first control resource pool index and a second control resource pool index, wherein the hybrid automatic repeat request acknowledgment codebook may be identified based on the fixed control resource pool index value.

[0055] Some examples of the methods, apparatus (devices) and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for the following actions: identifying a control resource set pool index value corresponding to: a fixed value, a lower control resource set identifier of the first control resource set and the second control resource set, a higher control resource set identifier of the first control resource set and the second control resource set, a lower search space set identifier of the first search space set and the second search space set, a higher search space set identifier of the first search space set and the second search space set, a starting position of the first search space set and the second search space set, an ending position of the first search space set or the second search space set, or any combination thereof, wherein the hybrid automatic repeat request acknowledgment codebook can be identified based on the control resource set pool index value.

[0056] Some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for the following actions: based on identifying that the first control resource pool index and the second control resource pool index may be different, identifying a hybrid automatic repeat request acknowledgment codebook based on the first control resource pool index and the second control resource pool index.

[0057] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for identifying a physical downlink scrambling sequence initialization value based on a first control resource set pool index or a second control resource set pool index, a default beam for a physical downlink shared channel scheduled via decoded downlink control information, an activated transmission configuration indicator state set, or any combination thereof.

[0058] Some examples of the methods, apparatus (devices) and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for the following actions: identifying a control resource set pool index value corresponding to: a lower control resource set identifier of the first control resource set and the second control resource set, a higher control resource set identifier of the first control resource set and the second control resource set, a lower search space set identifier of the first search space set and the second search space set, a higher search space set identifier of the first search space set and the second search space set, a starting position of the first search space set and the second search space set, an ending position of the first search space set or the second search space set, or any combination thereof, wherein the physical downlink scrambling sequence initialization value, the default beam for the physical downlink shared channel scheduled via the decoded downlink control information, the activated transmission configuration indicator state set, or any combination thereof can be identified based on the control resource set pool index value.

[0059] A method of wireless communication at a base station is described. The method may include transmitting downlink control information to a UE, wherein the downlink control information corresponds to a first physical downlink control channel candidate, a second physical downlink control channel candidate, or a combined physical downlink control channel candidate; identifying, based on the transmitting, that the transmitted downlink control channel candidate corresponds to the combined physical downlink control channel candidate; and communicating with the UE based on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate.

[0060] An apparatus for wireless communication at a base station is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to: transmit downlink control information to a UE, wherein the downlink control information corresponds to a first physical downlink control channel candidate, a second physical downlink control channel candidate, or a combined physical downlink control channel candidate; identify, based on the transmission, that the transmitted downlink control channel candidate corresponds to the combined physical downlink control channel candidate; and communicate with the UE based on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate.

[0061] Another apparatus for wireless communication at a base station is described. The apparatus may include means for transmitting downlink control information to a UE, wherein the downlink control information corresponds to a first physical downlink control channel candidate, a second physical downlink control channel candidate, or a combined physical downlink control channel candidate; identifying, based on the transmitting, that the transmitted downlink control channel candidate corresponds to the combined physical downlink control channel candidate; and communicating with the UE based on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate.

[0062] A non-transitory computer-readable medium storing code for wireless communication at a base station is described. The code may include instructions executable by a processor to: transmit downlink control information to a UE, wherein the downlink control information corresponds to a first physical downlink control channel candidate, a second physical downlink control channel candidate, or a combined physical downlink control channel candidate; identify, based on the transmission, that the transmitted downlink control channel candidate corresponds to the combined physical downlink control channel candidate; and communicate with the UE based on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate.

[0063] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for including in the downlink control information an indication that the transmitted physical downlink control channel corresponds to a combined physical downlink control channel candidate.

[0064] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, the indication includes a bit indicating that the transmitted downlink control information corresponds to a combined physical downlink control channel candidate.

[0065] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for the following actions: the downlink control information corresponds to a first physical downlink control channel candidate in a first search space set, a second physical downlink control channel candidate in a second search space set, and a combined physical downlink control channel candidate in the first search space set and the second search space set.

[0066] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, including the indication may include operations, features, apparatus, or instructions for performing the following actions: scrambling a cyclic redundancy check of the downlink control information transmitted using an indication that the downlink control information corresponds to a radio network temporary identifier of a combined physical downlink control channel candidate.

[0067] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for scrambling the downlink control information using at least a scrambling identifier indicating that the transmitted physical downlink control channel candidate may be a combined physical downlink control channel candidate.

[0068] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, scrambling the downlink control information may further include operations, features, apparatus, or instructions for scrambling the demodulation reference signal and the decoded bits of the downlink control information using a scrambling identifier indicating that the transmitted physical downlink control channel candidate may be a combined physical downlink control channel candidate.

[0069] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for the following actions: identifying a starting position of a physical downlink shared channel corresponding to the transmitted physical downlink control channel candidate based on identifying that the transmitted physical downlink control channel candidate may be a combined physical downlink control channel candidate, and transmitting the physical downlink shared channel according to the identified starting position.

[0070] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, identifying the starting position may include operations, features, apparatus, or instructions for the following actions: identifying that the starting position may be during or after a first codeword in a later search space set in a first search space set or a second search space set.

[0071] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for the following actions: identifying a start position during or after a first codeword of an earlier search space set in the first search space set and the second search space set, during or after a first codeword of a search space set with a minimum index in the first search space set or the second search space set, or during or after a first codeword of a control resource set with a minimum identifier in the first control resource set and the second control resource set.

[0072] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for: identifying an offset time slot number relative to the reference time slot, and transmitting an identification of the offset time slot number in the downlink control information, wherein the physical downlink shared channel may be transmitted based on the reference time slot and the offset time slot number.

[0073] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for identifying a reference symbol for identifying a starting position of a physical downlink shared channel based on identifying that the transmitted downlink control information corresponds to a combined physical downlink control channel candidate.

[0074] Some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for identifying a first symbol in the later of the first search space set and the second search space set.

[0075] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for identifying a first codeword in the earlier of a first search space set and a second search space set, a first codeword in a search space set with a minimum index in the first search space set or the second search space set, or a first codeword in a control resource set with a minimum identifier in a first control resource set and a second control resource set.

[0076] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for: identifying a downlink control information format for the transmitted downlink control information, wherein identifying the reference symbol may be based on identifying the downlink control information format.

[0077] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for: identifying a starting position of a physical downlink shared channel based on the reference symbol, and transmitting the physical downlink shared channel based on the identified starting position.

[0078] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for the following actions: identifying a reference time slot based on a later time slot of a first search space set and a second search space set based on identifying that the transmitted downlink control information corresponds to a combined physical downlink control channel candidate, and identifying a starting position of a physical downlink shared channel based on the reference time slot, wherein the transmitted downlink control information indicates the starting position using a value of a resource allocation field included in the downlink control information.

[0079] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for the following actions: identifying a reference time slot based on a later time slot of a first search space set and a second search space set based on identifying that the transmitted downlink control information corresponds to a combined physical downlink control channel candidate, and identifying a starting position of a physical uplink shared channel based on the reference time slot, wherein the transmitted downlink control information indicates the starting position using a value of a resource allocation field included in the downlink control information.

[0080] Some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for: identifying a time slot number relative to the reference time slot, wherein the value of the resource allocation field indicates the time slot number.

[0081] Some examples of the methods, apparatuses (devices) and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for the following actions: rate matching resources of a physical downlink shared channel scheduled by the downlink control information around resources corresponding to the downlink control information in a first search space set and a second search space set based on an identification that the transmitted downlink control information corresponds to a combined physical downlink control channel candidate.

[0082] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for transmitting a precoder granularity of a control resource set associated with a first search space set or a second search space set, and rate matching resources of a physical downlink shared channel with resources of one or more demodulation reference signals based on the precoder granularity.

[0083] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, when the precoder granularity indicates contiguous resource blocks of a control resource set, the one or more demodulation reference signals correspond to resource element groups of the control resource set.

[0084] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, when the precoder granularity does not indicate contiguous resource blocks of a control resource set, the one or more demodulation reference signals correspond to a group of resource elements that combine physical downlink control channel candidates.

[0085] Some examples of the methods, apparatus (devices) and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for the following actions: transmitting the downlink control information without a transmission configuration indicator status field indicating the transmission configuration indicator status of the physical downlink shared channel scheduled by the downlink control information; and the transmitted downlink control information does not include the transmission configuration indicator status, and identifying whether the first control resource set corresponding to the first search space set can be the same control resource set as the second control resource set corresponding to the second search space set based on identifying that the transmitted downlink control information corresponds to a combined physical downlink control channel candidate, and transmitting the downlink control information without the transmission configuration indicator status field.

[0086] Some examples of the methods, apparatus (devices) and non-transitory computer-readable media described herein may further include operations, features, apparatuses or instructions for identifying a transmission configuration indicator state, quasi-co-location, or both of a scheduled physical downlink shared channel based on identifying that the first control resource set corresponds to the second control resource set and according to the first control resource set or the second control resource set corresponding to the combined physical downlink shared channel candidate.

[0087] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for receiving an indication of UE capabilities from the UE, and determining whether an offset between the transmitted downlink control information and a corresponding physical downlink shared channel may be greater than or equal to a UE capability threshold corresponding to the UE capabilities, wherein the transmission configuration indicator state, quasi-co-location, or both may be identified based on determining that the offset may be greater than the UE capability threshold.

[0088] Some examples of the methods, apparatus (devices) and non-transitory computer-readable media described herein may further include operations, features, apparatuses or instructions for identifying a transmission configuration indicator state, quasi-co-location, or both of a scheduled physical downlink shared channel according to a first control resource set or a second control resource set based on identifying that the first control resource set may be different from the second control resource set.

[0089] Some examples of the methods, apparatus (devices) and non-transitory computer-readable media described herein may further include operations, features, apparatuses or instructions for identifying a transmission configuration indicator state, quasi-co-location or both of a scheduled physical downlink shared channel according to a first control resource set or a second control resource set based on: a lower control resource set identifier of the first control resource set and the second control resource set, a higher control resource set identifier of the first control resource set and the second control resource set, a lower search space set identifier of the first search space set and the second search space set, a higher search space set identifier of the first search space set and the second search space set, a starting position of the first search space set and the second search space set, an ending position of the first search space set or the second search space set, or any combination thereof.

[0090] Some examples of the methods, apparatus (devices) and non-transitory computer-readable media described herein may further include operations, features, apparatuses or instructions for identifying a transmission configuration indicator state, quasi-co-location, or both of a scheduled physical downlink shared channel according to a first control resource set and a second control resource set based on identifying that the first control resource set may be different from the second control resource set.

[0091] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, a transmission configuration indicator state, quasi co-location, or both corresponds to a multi-state physical downlink shared channel based on the identification.

[0092] Some examples of the methods, apparatus (devices) and non-transitory computer-readable media described herein may further include operations, features, apparatuses or instructions for the following actions: identifying resources of a physical uplink control channel based on the number of control channel elements and a starting control channel element index from a first control resource set corresponding to a first search space set or from a second control resource set corresponding to a second search space set based on identifying that the transmitted downlink control information corresponds to a combined physical downlink control channel candidate.

[0093] Some examples of the methods, apparatus (devices) and non-transitory computer-readable media described herein may further include operations, features, apparatuses or instructions for the following actions: identifying resources of a physical uplink control channel according to the number of control channel elements and the starting control channel element index from the first control resource set or the second control resource set based on: a lower control resource set identifier of the first control resource set and the second control resource set, a higher control resource set identifier of the first control resource set and the second control resource set, a lower search space set identifier of the first search space set and the second search space set, a higher search space set identifier of the first search space set and the second search space set, a starting position of the first search space set and the second search space set, an ending position of the first search space set or the second search space set, or any combination thereof.

[0094] Some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for receiving a physical uplink control channel based on the identification.

[0095] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for identifying resources of a physical uplink control channel based on the number of control channel elements and the starting control channel element index from both a first control resource set corresponding to a first search space set and a second control resource set corresponding to a second search space set based on identifying that the transmitted downlink control information corresponds to a combined physical downlink control channel candidate.

[0096] Some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for receiving a physical uplink control channel based on the identification.

[0097] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for the following actions: identifying a first control resource set pool index corresponding to a first search space set based on identifying that the transmitted downlink control information corresponds to the combined physical downlink control channel candidate, which may be different from a second control resource set pool index corresponding to a second search space set.

[0098] Some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for the following actions: based on identifying that the first control resource pool index and the second control resource pool index may be different, identifying a hybrid automatic repeat request acknowledgment codebook based on the first control resource pool index or the second control resource pool index.

[0099] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for the following actions: identifying a fixed control resource pool index value for a first control resource pool index and a second control resource pool index, wherein the hybrid automatic repeat request acknowledgment codebook may be identified based on the fixed control resource pool index value.

[0100] Some examples of the methods, apparatus (devices) and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for the following actions: identifying a control resource set pool index value corresponding to: a lower control resource set identifier of the first control resource set and the second control resource set, a higher control resource set identifier of the first control resource set and the second control resource set, a lower search space set identifier of the first search space set and the second search space set, a higher search space set identifier of the first search space set and the second search space set, a starting position of the first search space set and the second search space set, an ending position of the first search space set or the second search space set, or any combination thereof, wherein the hybrid automatic repeat request acknowledgment codebook can be identified based on the control resource set pool index value.

[0101] Some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for the following actions: based on identifying that the first control resource pool index and the second control resource pool index may be different, identifying a hybrid automatic repeat request acknowledgment codebook based on the first control resource pool index and the second control resource pool index.

[0102] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for identifying a physical downlink scrambling sequence initialization value based on a first control resource set pool index or a second control resource set pool index, a default beam for a physical downlink shared channel scheduled via transmitted downlink control information, an activated transmission configuration indicator state set, or any combination thereof.

[0103] Some examples of the methods, apparatus (devices) and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for the following actions: identifying a control resource set pool index value corresponding to: a lower control resource set identifier of the first control resource set and the second control resource set, a higher control resource set identifier of the first control resource set and the second control resource set, a lower search space set identifier of the first search space set and the second search space set, a higher search space set identifier of the first search space set and the second search space set, a starting position of the first search space set and the second search space set, an ending position of the first search space set or the second search space set, or any combination thereof, wherein the physical downlink scrambling sequence initialization value, the default beam for the physical downlink shared channel scheduled via the transmitted downlink control information, the activated transmission configuration indicator state set, or any combination thereof can be identified based on the control resource set pool index value. BRIEF DESCRIPTION OF THE DRAWINGS

[0105] Figure 1

[0014] An example of a wireless communication system that supports decoding downlink control information in combined physical downlink control channel (PDCCH) candidates in accordance with aspects of the present disclosure is illustrated.

[0106] Figure 2

[0014] An example of a wireless communication system that supports decoding downlink control information in combined PDCCH candidates in accordance with aspects of the present disclosure is illustrated.

[0107] Figure 3

[0014] Illustrated are examples of resource maps that support decoding downlink control information in combined PDCCH candidates in accordance with aspects of the present disclosure.

[0108] Figure 4

[0014] Illustrated are examples of resource maps that support decoding downlink control information in combined PDCCH candidates in accordance with aspects of the present disclosure.

[0109] Figure 5

[0014] Illustrated are examples of resource maps that support decoding downlink control information in combined PDCCH candidates in accordance with aspects of the present disclosure.

[0110] Figure 6

[0014] Illustrated are examples of resource maps that support decoding downlink control information in combined PDCCH candidates in accordance with aspects of the present disclosure.

[0111] Figure 7

[0014] Illustrated are examples of resource maps that support decoding downlink control information in combined PDCCH candidates in accordance with aspects of the present disclosure.

[0112] Figure 8

[0014] Illustrated are examples of resource maps that support decoding downlink control information in combined PDCCH candidates in accordance with aspects of the present disclosure.

[0113] Figure 9 Illustrated is an example of a process flow diagram that supports decoding downlink control information in a combined PDCCH candidate in accordance with aspects of the present disclosure.

[0114] Figure 10 and Figure 11 A block diagram of an apparatus supporting decoding downlink control information in a combined PDCCH candidate is shown in accordance with aspects of the present disclosure.

[0115] Figure 12 A block diagram of a communications manager that supports decoding downlink control information in combined PDCCH candidates is shown in accordance with aspects of the present disclosure.

[0116] Figure 13

[0014] Diagrams of systems including devices that support decoding downlink control information in combined PDCCH candidates are shown in accordance with aspects of the present disclosure.

[0117] Figure 14 and Figure 15 A block diagram of an apparatus supporting decoding downlink control information in a combined PDCCH candidate is shown in accordance with aspects of the present disclosure.

[0118] Figure 16 A block diagram of a communications manager that supports decoding downlink control information in combined PDCCH candidates is shown in accordance with aspects of the present disclosure.

[0119] Figure 17

[0014] Diagrams of systems including devices that support decoding downlink control information in combined PDCCH candidates are shown in accordance with aspects of the present disclosure.

[0120] Figure 18 and Figure 19 Shown is a flow chart illustrating a method of supporting decoding downlink control information in a combined PDCCH candidate in accordance with aspects of the present disclosure.

[0121] Detailed description

[0122] A wireless communication system may include multiple communication devices, such as user equipment (UE) and base stations (which may provide wireless communication services to the UE). For example, such base stations may be next-generation NodeBs or Gigabit NodeBs (either of which may be referred to as gNBs), which may support multiple radio access technologies, including fourth-generation (4G) systems (such as long-term evolution (LTE) systems) and fifth-generation (5G) systems (which may be referred to as new radio (NR) systems). The described techniques may be used by UEs and base stations to support combined physical downlink control channel (PDCCH) candidates, which may be associated with multiple search space sets or the same search space set.

[0123] For example, the UE may combine a PDCCH candidate corresponding to one search space set with another PDCCH candidate corresponding to another search space set (or the same search space set) to form a combined PDCCH candidate. The described techniques may be used to determine when a DCI decoded from a search space set corresponds to a combined PDCCH candidate. For example, the UE or the base station (or both) may identify that the DCI corresponds to a combined PDCCH candidate based on identifying the combined PDCCH candidate from the first and second search space sets (e.g., determined by default). In other examples, the UE or the base station (or both) may identify that the DCI corresponds to a combined PDCCH candidate based on an indication included in the DCI (such as a bit indicator of the PDCCH, a radio network temporary identifier (RNTI) (e.g., scrambling a portion of the DCI, one or more demodulation reference signals (DMRS), or both), or a scrambling identifier).

[0124] In some examples, other channel characteristics, such as PDSCH, PUSCH, and PUCCH scheduling information, can be determined based on identifying that the DCI corresponds to a combined PDCCH candidate. For example, a reference symbol or time slot for determining the offset between the decoded DCI and another channel (e.g., PDSCH, PUSCH, or PUCCH) can be identified based on the resources of the search space set that includes the PDCCH candidate. In some cases, the first symbol in the later search space set can be used as a reference symbol for the PDSCH. In other examples, the last time slot in the later search space set can be used as a reference time slot for the PDSCH or PUSCH. Other signal characteristics, such as rate matching of the PUSCH, TCI status, PUCCH resources, HARQ feedback codebook, etc., can be determined based on the search space set, the control resource set (CORESET) corresponding to the search space set, and other characteristics of the combined PDCCH candidate. In this way, these UEs can provide extended flexibility for control information and improve the reliability of the PDCCH in the 5G system. The described techniques may include features for improving power consumption and, in some examples, may promote enhanced efficiency for high reliability and low latency operation in 5G systems, among other benefits.

[0125] Aspects of the present disclosure are initially described in the context of wireless communication systems. Aspects of the present disclosure are further described with respect to various resource diagrams and process flow diagrams. Aspects of the present disclosure are further illustrated and described by and with reference to apparatus diagrams, system diagrams, and flow diagrams related to decoding downlink control information in combined PDCCH candidates.

[0126] Figure 1 An example of a wireless communication system 100 that supports decoding downlink control information in a combined PDCCH candidate according to various aspects of the present disclosure is illustrated. The wireless communication system 100 may include one or more base stations 105, one or more UEs 115, and a core network 130. In some examples, the wireless communication system 100 may be a Long Term Evolution (LTE) network, an Advanced LTE (LTE-A) network, an LTE-A Pro network, or a New Radio (NR) network. In some examples, the wireless communication system 100 may support enhanced broadband communication, ultra-reliable (e.g., mission-critical) communication, low-latency communication, communication with low-cost and low-complexity devices, or any combination thereof.

[0127] Base stations 105 may be dispersed throughout a geographic area to form wireless communication system 100 and may be different forms of devices or devices with different capabilities. Base stations 105 and UEs 115 may communicate wirelessly via one or more communication links 125. Each base station 105 may provide a coverage area 110 over which UEs 115 and base stations 105 may establish one or more communication links 125. Coverage area 110 may be an example of a geographic area over which base stations 105 and UEs 115 may support signal communication according to one or more radio access technologies.

[0128] The UEs 115 may be dispersed throughout the coverage area 110 of the wireless communication system 100, and each UE 115 may be stationary or mobile, or stationary and mobile at different times. The UEs 115 may be different forms of devices or devices with different capabilities. Figure 1 1. The UE 115 described herein may be capable of communicating with various types of devices, such as other UEs 115, base stations 105, or network equipment (e.g., core network nodes, relays, integrated access and backhaul (IAB) nodes, or other network equipment), such as Figure 1 As shown in .

[0129] Each base station 105 can communicate with the core network 130, with each other, or both. For example, the base stations 105 can interface with the core network 130 via one or more backhaul links 120 (e.g., via S1, N2, N3, or other interfaces). The base stations 105 can communicate with each other directly (e.g., directly between the base stations 105), indirectly (e.g., via the core network 130), or both directly and indirectly over the backhaul links 120 (e.g., via X2, Xn, or other interfaces). In some examples, the backhaul links 120 can be or include one or more wireless links.

[0130] One or more of the base stations 105 described herein may include or may be referred to by one of ordinary skill in the art as a base transceiver station, a radio base station, an access point, a radio transceiver, a Node B, an evolved Node B (eNB), a next generation Node B, or a Gigabit Node B (any of which may be referred to as a gNB), a Home Node B, a Home Evolved Node B, or other suitable terminology.

[0131] UE 115 may include or be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other suitable terminology, where "device" may also be referred to as a unit, a station, a terminal, or a client, etc. UE 115 may also include or be referred to as a personal electronic device, such as a cellular phone, a personal digital assistant (PDA), a tablet computer, a laptop computer, or a personal computer. In some examples, UE 115 may include or be referred to as a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or a machine type communication (MTC) device, etc., which may be implemented in various objects, such as appliances or vehicles, meters, etc.

[0132] The UE 115 described herein may be capable of communicating with various types of devices, such as other UEs 115, which may sometimes act as relays, as well as base stations 105 and network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, relay base stations, etc. Figure 1 As shown in .

[0133] The UE 115 and the base station 105 may communicate wirelessly with each other via one or more communication links 125 on one or more carriers. The term "carrier" may refer to a set of radio frequency spectrum resources having a defined physical layer structure for supporting the communication link 125. For example, a carrier for the communication link 125 may include a portion of a radio frequency spectrum band (e.g., a bandwidth portion (BWP)) that operates according to one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR). Each physical layer channel may carry acquisition signaling (e.g., synchronization signals, system information), control signaling for coordinating carrier operation, user data, or other signaling. The wireless communication system 100 may support communication with the UE 115 using carrier aggregation or multi-carrier operation. The UE 115 may be configured with multiple downlink component carriers and one or more uplink component carriers according to a carrier aggregation configuration. Carrier aggregation may be used with both frequency division duplex (FDD) and time division duplex (TDD) component carriers.

[0134] In some examples (e.g., in a carrier aggregation configuration), a carrier may also have acquisition signaling or control signaling that coordinates the operation of other carriers. A carrier may be associated with a frequency channel (e.g., an Evolved Universal Mobile Telecommunications System Terrestrial Radio Access (E-UTRA) Absolute Radio Frequency Channel Number (EARFCN)) and may be located according to a channel grid for discovery by a UE 115. A carrier may operate in a standalone mode in which initial acquisition and connection may be performed by a UE 115 via the carrier, or a carrier may operate in a non-standalone mode in which the connection is anchored using a different carrier (e.g., a different carrier of the same or different radio access technology).

[0135] The communication link 125 shown in the wireless communication system 100 may include an uplink transmission from the UE 115 to the base station 105, or a downlink transmission from the base station 105 to the UE 115. A carrier may carry downlink or uplink communications (e.g., in FDD mode) or may be configured to carry both downlink and uplink communications (e.g., in TDD mode).

[0136] A carrier may be associated with a particular bandwidth of radio frequency spectrum, and in some examples, the carrier bandwidth may be referred to as the "system bandwidth" of the carrier or wireless communication system 100. For example, the carrier bandwidth may be one of several determined bandwidths (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 megahertz (MHz)) of a carrier of a particular radio access technology. Devices of the wireless communication system 100 (e.g., base station 105, UE 115, or both) may have a hardware configuration that supports communication on a particular carrier bandwidth, or may be configurable to support communication on one of a set of carrier bandwidths. In some examples, the wireless communication system 100 may include a base station 105 or UE 115 that supports simultaneous communication via carriers associated with multiple carrier bandwidths. In some examples, each served UE 115 may be configured to operate on a portion (e.g., a subband, a BWP) or all of the carrier bandwidth.

[0137] The signal waveform transmitted on the carrier may include multiple subcarriers (e.g., using a multicarrier modulation (MCM) technique such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM)). In a system employing MCM techniques, a resource element may include one symbol period (e.g., the duration of one modulation symbol) and one subcarrier, where the symbol period and subcarrier spacing are inversely related. The number of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the coding rate of the modulation scheme, or both). Thus, the more resource elements received by UE 115 and the higher the order of the modulation scheme, the higher the data rate of UE 115 can be. Wireless communication resources may refer to a combination of radio frequency spectrum resources, time resources, and spatial resources (e.g., spatial layers or beams), and the use of multiple spatial layers may further improve the data rate or data integrity of communications with UE 115.

[0138] One or more parameter designs for a carrier may be supported, where the parameter designs may include subcarrier spacing (Δf) and cyclic prefix. A carrier may be divided into one or more BWPs with the same or different parameter designs. In some examples, a UE 115 may be configured with multiple BWPs. In some examples, a single BWP for a carrier may be active at a given time, and communications for the UE 115 may be limited to the one or more active BWPs.

[0139] The time interval of the base station 105 or the UE 115 can be expressed as a multiple of a basic time unit, such as a sampling period T s =1 / (Δf max ·N f ) seconds, where Δf max It can represent the maximum supported subcarrier spacing, and N f The maximum supported discrete Fourier transform (DFT) size may be indicated. Time intervals of communication resources may be organized according to radio frames, each having a specified duration (e.g., 10 milliseconds (ms)). Each radio frame may be identified by a system frame number (SFN) (e.g., ranging from 0 to 1023).

[0140] Each frame may include a plurality of consecutively numbered subframes or time slots, and each subframe or time slot may have the same duration. In some examples, a frame may be divided (e.g., in the time domain) into subframes, and each subframe may be further divided into a number of time slots. Alternatively, each frame may include a variable number of time slots, and the number of time slots may depend on the subcarrier spacing. Each time slot may include a number of code element periods (e.g., depending on the length of the cyclic prefix added before each code element period). In some wireless communication systems 100, a time slot may be further divided into a plurality of mini-time slots containing one or more code elements. Excluding the cyclic prefix, each code element period may contain one or more (e.g., N f The duration of a symbol period may depend on the subcarrier spacing or the operating band.

[0141] A subframe, slot, mini-slot, or symbol may be the smallest scheduling unit (e.g., in the time domain) of the wireless communication system 100 and may be referred to as a transmission time interval (TTI). In some examples, the TTI duration (e.g., the number of symbol periods in a TTI) may be variable. Additionally or alternatively, the smallest scheduling unit of the wireless communication system 100 may be dynamically selected (e.g., in bursts of shortened TTIs (sTTIs)).

[0142] Physical channels may be multiplexed on a carrier according to various techniques. Physical control channels and physical data channels may be multiplexed on a downlink carrier, for example, using one or more of time division multiplexing (TDM), frequency division multiplexing (FDM), or hybrid TDM-FDM techniques. A control region (e.g., a control resource set (CORESET)) for physical control channels may be defined by a number of symbol periods and may extend across the system bandwidth or a subset of the system bandwidth of a carrier. One or more control regions (e.g., CORESETs) may be configured for a set of UEs 115. For example, one or more of UEs 115 may monitor or search the control region for control information according to one or more search space sets, and each search space set may include one or more control channel candidates in one or more aggregation levels arranged in a cascaded manner. An aggregation level for a control channel candidate may refer to the number of control channel resources (e.g., control channel elements (CCEs)) associated with encoded information for a control information format having a given payload size. The search space sets may include a common search space set configured for transmitting control information to multiple UEs 115 and a UE-specific search space set for transmitting control information to a specific UE 115 .

[0143] Each base station 105 may provide communication coverage via one or more cells (e.g., macro cells, small cells, hotspots, or other types of cells, or any combination thereof). The term "cell" may refer to a logical communication entity used to communicate with a base station 105 (e.g., on a carrier) and may be associated with an identifier (e.g., a physical cell identifier (PCID), a virtual cell identifier (VCID), or other) used to distinguish between adjacent cells. In some examples, a cell may also refer to a geographic coverage area 110 or a portion of a geographic coverage area 110 (e.g., a sector) on which the logical communication entity operates. The scope of such a cell may range from a smaller area (e.g., a structure, a subset of structures) to a larger area depending on various factors (such as the capabilities of the base station 105). For example, a cell may be or include a building, a subset of buildings, or an external space between or overlapping geographic coverage areas 110, among other examples.

[0144] A macro cell generally covers a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access to UEs 115 that have a service subscription with a network provider that supports the macro cell. A small cell may be associated with a lower power base station 105 (compared to a macro cell), and the small cell may operate in the same or different (e.g., licensed, unlicensed) frequency band as the macro cell. A small cell may provide unrestricted access to UEs 115 that have a service subscription with the network provider, or may provide restricted access to UEs 115 associated with the small cell (e.g., UEs 115 in a closed subscriber group (CSG), UEs 115 associated with users in a home or office). A base station 105 may support one or more cells and may also support communications over one or more cells using one or more component carriers.

[0145] In some examples, a carrier may support multiple cells, and different cells may be configured according to different protocol types (e.g., MTC, narrowband IoT (NB-IoT), enhanced mobile broadband (eMBB)) that may provide access to different types of devices.

[0146] In some examples, base stations 105 can be mobile and, therefore, provide communication coverage for mobile geographic coverage areas 110. In some examples, different geographic coverage areas 110 associated with different technologies can overlap, but the different geographic coverage areas 110 can be supported by the same base station 105. In other examples, overlapping geographic coverage areas 110 associated with different technologies can be supported by different base stations 105. The wireless communication system 100 can include, for example, a heterogeneous network in which different types of base stations 105 provide coverage for various geographic coverage areas 110 using the same or different radio access technologies.

[0147] The wireless communication system 100 may support synchronous or asynchronous operation. For synchronous operation, the base stations 105 may have similar frame timing, and transmissions from different base stations 105 may be approximately aligned in time. For asynchronous operation, the base stations 105 may have different frame timing, and transmissions from different base stations 105 may not be aligned in time in some examples. The techniques described herein may be used for either synchronous or asynchronous operation.

[0148] Some UEs 115, such as MTC or IoT devices, may be low-cost or low-complexity devices and may provide automated communication between machines (e.g., via machine-to-machine (M2M) communication). M2M communication or MTC may refer to data communication technology that allows devices to communicate with each other or with a base station 105 without human intervention. In some examples, M2M communication or MTC may include communications from devices that incorporate sensors or meters to measure or capture information and relay such information to a central server or application that utilizes the information or presents it to a person interacting with the application. Some UEs 115 may be designed to collect information or implement automated behavior of machines or other devices. Examples of applications for MTC devices include smart metering, inventory monitoring, water level monitoring, equipment monitoring, healthcare monitoring, wilderness survival monitoring, weather and geographic event monitoring, queue management and tracking, remote security sensing, physical access control, and transaction-based commercial charging.

[0149] Some UEs 115 may be configured to employ a reduced power consumption mode of operation, such as half-duplex communication (e.g., a mode that supports unidirectional communication via transmission or reception but not simultaneous transmission and reception). In some examples, half-duplex communication may be performed at a reduced peak rate. Other power saving techniques for UEs 115 include entering a power-saving deep sleep mode when not engaged in active communication, operating over a limited bandwidth (e.g., according to narrowband communication), or a combination of these techniques. For example, some UEs 115 may be configured to operate using a narrowband protocol type that is associated with a defined portion or range (e.g., a set of subcarriers or resource blocks (RBs)) within a carrier, within a guard band of a carrier, or outside a carrier.

[0150] The wireless communication system 100 can be configured to support ultra-reliable communication or low-latency communication or various combinations thereof. For example, the wireless communication system 100 can be configured to support ultra-reliable low-latency communication (URLLC) or mission-critical communication. The UE 115 can be designed to support ultra-reliable, low-latency or critical functions (e.g., mission-critical functions). Ultra-reliable communication can include private communication or group communication and can be supported by one or more mission-critical services such as mission-critical push-to-talk (MCPTT), mission-critical video (MCVideo), or mission-critical data (MCData). Support for mission-critical functions can include prioritization of services, and mission-critical services can be used for public safety or general commercial applications. The terms ultra-reliable, low-latency, mission-critical, and ultra-reliable low-latency can be used interchangeably herein.

[0151] In some examples, UE 115 may also be able to communicate directly with other UEs 115 over a device-to-device (D2D) communication link 135 (e.g., using a peer-to-peer (P2P) or D2D protocol). One or more UEs 115 utilizing D2D communication may be within the geographic coverage area 110 of base station 105. Other UEs 115 in such a group may be outside the geographic coverage area 110 of base station 105 or otherwise unable to receive transmissions from base station 105. In some examples, groups of UEs 115 communicating via D2D communication may utilize a one-to-many (1:M) system, in which each UE 115 transmits to every other UE 115 in the group. In some examples, base station 105 facilitates the scheduling of resources for D2D communication. In other cases, D2D communication is performed between UEs 115 without involving base station 105.

[0152] In some systems, the D2D communication link 135 can be an example of a communication channel (such as a sidelink communication channel) between vehicles (e.g., UE 115). In some examples, the vehicles can communicate using vehicle-to-everything (V2X) communication, vehicle-to-vehicle (V2V) communication, or some combination of these communications. The vehicles can signal information related to traffic conditions, signal scheduling, weather, safety, emergency situations, or any other information related to the V2X system. In some examples, the vehicles in the V2X system can use vehicle-to-network (V2N) communication to communicate with roadside infrastructure (such as roadside units), with the network, or with both via one or more network nodes (e.g., base station 105).

[0153] The core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. The core network 130 may be an evolved packet core (EPC) or a 5G core (5GC), and the EPC or 5GC may include at least one control plane entity (e.g., a mobility management entity (MME), an access and mobility management function (AMF)) that manages access and mobility, and at least one user plane entity (e.g., a serving gateway (S-GW), a packet data network (PDN) gateway (P-GW), or a user plane function (UPF)) that routes packets or interconnects to external networks. The control plane entity may manage non-access stratum (NAS) functions such as mobility, authentication, and bearer management for UEs 115 served by base stations 105 associated with the core network 130. User IP packets may be delivered through the user plane entity, which may provide IP address allocation and other functions. The user plane entity may be connected to the network operator IP service 150. Operator IP services 150 may include access to the Internet, an intranet, an IP Multimedia Subsystem (IMS), or packet-switched streaming services.

[0154] Some network devices (such as base stations 105) may include subcomponents, such as access network entities 140, which may be examples of access node controllers (ANCs). Each access network entity 140 may communicate with each UE 115 through one or more other access network transport entities 145, which may be referred to as radio heads, smart radio heads, or transmit / receive points (TRPs). Each access network transport entity 145 may include one or more antenna panels. In some configurations, the various functions of each access network entity 140 or base station 105 may be distributed across various network devices (e.g., radio heads and ANCs) or consolidated into a single network device (e.g., base station 105).

[0155] The wireless communication system 100 can operate using one or more frequency bands, typically in the range of 300 megahertz (MHz) to 300 gigahertz (GHz). Generally speaking, the 300 MHz to 3 GHz region is referred to as the ultra-high frequency (UHF) region or the decimeter band because the wavelengths range from approximately 1 decimeter to 1 meter long. UHF waves can be blocked or redirected by buildings and environmental features, but these waves can penetrate various structures sufficiently for macrocells to provide service to UEs 115 located indoors. Transmissions using UHF waves can be associated with smaller antennas and a shorter range (e.g., less than 100 kilometers) compared to transmissions using the lower frequencies and longer wavelengths in the high frequency (HF) or very high frequency (VHF) portions of the spectrum below 300 MHz.

[0156] The wireless communication system 100 may also operate in the super high frequency (SHF) region of the frequency band from 3 GHz to 30 GHz (also known as the centimeter band) or in the extremely high frequency (EHF) region of the spectrum (e.g., from 30 GHz to 300 GHz) (also known as the millimeter band). In some examples, the wireless communication system 100 may support millimeter wave (mmW) communications between the UE 115 and the base station 105, and the EHF antennas of the corresponding devices may be smaller and more closely spaced than the UHF antennas. In some examples, this may facilitate the use of antenna arrays within the device. However, the propagation of EHF transmissions may be subject to even greater atmospheric attenuation and a shorter range than SHF or UHF transmissions. The techniques disclosed herein may be employed across transmissions using one or more different frequency regions, and the use of frequency bands specified across these frequency regions may vary by country or regulatory agency.

[0157] The wireless communication system 100 may utilize both licensed and unlicensed radio frequency spectrum bands. For example, the wireless communication system 100 may employ licensed assisted access (LAA), LTE unlicensed (LTE-U) radio access technology, or NR technology in an unlicensed band, such as the 5 GHz industrial, scientific, and medical (ISM) band. When operating in an unlicensed radio frequency spectrum band, devices (such as base stations 105 and UEs 115) may employ carrier sensing for conflict detection and avoidance. In some examples, operations in the unlicensed band may be based on a carrier aggregation configuration (e.g., LAA) in conjunction with component carriers operating in the licensed band. Operations in the unlicensed spectrum may include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, among others.

[0158] The base station 105 or UE 115 may be equipped with multiple antennas that can be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming. The antennas of the base station 105 or UE 115 may be located within one or more antenna arrays or antenna panels that can support MIMO operations or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may be co-located at an antenna assembly (such as an antenna tower). In some examples, the antennas or antenna arrays associated with the base station 105 may be located at different geographical locations. The base station 105 may have an antenna array having several rows and columns of antenna ports that the base station 105 can use to support beamforming for communications with the UE 115. Similarly, the UE 115 may have one or more antenna arrays that can support various MIMO or beamforming operations. Additionally or alternatively, the antenna panel may support radio frequency beamforming for signals transmitted via the antenna ports.

[0159] The base station 105 or the UE 115 can use MIMO communication to exploit multipath signal propagation and improve spectral efficiency by transmitting or receiving multiple signals via different spatial layers. Such a technique may be referred to as spatial multiplexing. For example, a transmitting device may transmit multiple signals via different antennas or different antenna combinations. Similarly, a receiving device may receive multiple signals via different antennas or different antenna combinations. Each of the multiple signals may be referred to as a separate spatial stream and may carry bits associated with the same data stream (e.g., the same codeword) or different data streams (e.g., different codewords). Different spatial layers may be associated with different antenna ports for channel measurement and reporting. MIMO techniques include single-user MIMO (SU-MIMO), in which multiple spatial layers are transmitted to the same receiving device, and multi-user MIMO (MU-MIMO), in which multiple spatial layers are transmitted to multiple devices.

[0160] Beamforming (which may also be referred to as spatial filtering, directional transmission, or directional reception) is a signal processing technique that can be used at a transmitting device or a receiving device (e.g., base station 105, UE 115) to shape or steer an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting device and the receiving device. Beamforming can be achieved by combining signals communicated via antenna elements of an antenna array so that some signals propagating at a particular orientation relative to the antenna array experience constructive interference, while other signals experience destructive interference. Adjustments to signals communicated via antenna elements can include the transmitting device or the receiving device applying an amplitude offset, a phase offset, or both to the signals carried via the antenna elements associated with that device. The adjustments associated with each antenna element can be defined by a set of beamforming weights associated with a particular orientation (e.g., relative to the antenna array of the transmitting device or the receiving device, or relative to some other orientation).

[0161] The base station 105 or the UE 115 may use beam sweeping techniques as part of a beamforming operation. For example, the base station 105 may use multiple antennas or antenna arrays (e.g., antenna panels) to perform beamforming operations for directional communication with the UE 115. Some signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) may be transmitted multiple times by the base station 105 in different directions. For example, the base station 105 may transmit signals according to different sets of beamforming weights associated with different transmission directions. The transmissions in different beam directions may be used (e.g., by a transmitting device (such as the base station 105) or a receiving device (such as the UE 115)) to identify a beam direction for later transmission or reception by the base station 105.

[0162] Some signals, such as data signals associated with a particular recipient device, may be transmitted by base station 105 in a single beam direction, e.g., a direction associated with a recipient device, such as UE 115. In some examples, a beam direction associated with transmissions along a single beam direction may be determined based on signals transmitted in one or more beam directions. For example, UE 115 may receive one or more signals transmitted by base station 105 in different directions and may report to base station 105 an indication of the signal received by UE 115 with the highest signal quality or other acceptable signal quality.

[0163] In some examples, transmissions by a device (e.g., by a base station 105 or a UE 115) may be performed using multiple beam directions, and the device may use a combination of digital precoding or radio frequency beamforming to generate a combined beam for transmission (e.g., from the base station 105 to the UE 115). The UE 115 may report feedback indicating precoding weights for one or more beam directions, and the feedback may correspond to a configured number of beams across the system bandwidth or one or more subbands. The base station 105 may transmit reference signals (e.g., cell-specific reference signals (CRS), channel state information reference signals (CSI-RS)) that may be precoded or uncoded. The UE 115 may provide feedback for beam selection, which may be a precoding matrix indicator (PMI) or codebook-based feedback (e.g., a multi-panel type codebook, a linear combination type codebook, a port selection type codebook). Although these techniques are described with reference to signals transmitted by base station 105 in one or more directions, UE 115 may use similar techniques to transmit signals multiple times in different directions (e.g., to identify a beam direction for subsequent transmission or reception by UE 115) or to transmit signals in a single direction (e.g., to transmit data to a receiving device).

[0164] A receiving device (e.g., UE 115) may attempt multiple receive configurations (e.g., directional listening) when receiving various signals (such as synchronization signals, reference signals, beam selection signals, or other control signals) from base station 105. For example, the receiving device may attempt multiple receive directions by receiving via different antenna subarrays, processing received signals according to different antenna subarrays, receiving according to different receive beamforming weight sets applied to signals received at multiple antenna elements of an antenna array (e.g., different directional listening weight sets), or processing received signals according to different receive beamforming weight sets applied to signals received at multiple antenna elements of an antenna array, any of which may be referred to as "listening" according to different receive configurations or receive directions. In some examples, the receiving device may use a single receive configuration to receive along a single beam direction (e.g., when receiving data signals). The single receive configuration may be aligned on a beam direction determined based on listening according to different receive configuration directions (e.g., a beam direction determined to have the highest signal strength, highest signal-to-noise ratio (SNR), or other acceptable signal quality based on listening according to multiple beam directions).

[0165] The wireless communication system 100 can be a packet-based network that operates according to a layered protocol stack. In the user plane, the communication of the bearer or packet data convergence protocol (PDCP) layer can be IP-based. The radio link control (RLC) layer can perform packet segmentation and reassembly to communicate on the logical channel. The media access control (MAC) layer can perform priority handling and multiplex the logical channel into the transport channel. The MAC layer can also use error detection technology, error correction technology, or both to support retransmission of the MAC layer to improve link efficiency. In the control plane, the radio resource control (RRC) protocol layer can provide the establishment, configuration and maintenance of the RRC connection of the radio bearer that supports user plane data between the UE 115 and the base station 105 or the core network 130. At the physical layer, the transport channel can be mapped to the physical channel.

[0166] UE 115 and base station 105 may support retransmission of data to increase the likelihood that the data is successfully received. Hybrid Automatic Repeat Request (HARQ) feedback is a technique for increasing the likelihood that data is correctly received on communication link 125. HARQ may include a combination of error detection (e.g., using a cyclic redundancy check (CRC)), forward error correction (FEC), and retransmission (e.g., automatic repeat request (ARQ)). HARQ may improve MAC layer throughput in poor radio conditions (e.g., low signal-to-noise ratio conditions). In some examples, a device may support simultaneous slot HARQ feedback, wherein the device may provide HARQ feedback in a particular time slot for data received in a previous symbol in that time slot. In other cases, the device may provide HARQ feedback in a subsequent time slot or based on some other time interval.

[0167] The UE 115 may be configured with multiple search space sets for a downlink channel (e.g., a PDCCH). The UE 115 may identify PDCCH candidates in the multiple search space sets and decode the received DCI, and determine whether the decoded DCI corresponds to one of the PDCCH candidates from the multiple search space sets or from the combined PDCCH candidates corresponding to the multiple search space sets or the combined PDCCH candidates corresponding to a single search space set. The UE 115 may identify that the decoded DCI corresponds to the combined PDCCH candidate based on an indication (e.g., a bit or RNTI) included in the DCI or a scrambling identifier of the DCI, etc. In some cases, the UE 115 may identify that the decoded DCI corresponds to the combined PDCCH candidate based on being configured with the combined PDCCH candidate (e.g., configured by the base station 105 via RRC).

[0168] Based on identifying that the decoded DCI corresponds to a combined PDCCH candidate, the UE 115 can identify other channel characteristics, such as physical downlink shared channel (PDSCH), physical uplink shared channel (PUSCH), and physical uplink control channel (PUCCH) scheduling information, rate matching information, HARQ feedback codebook information, etc. In some cases, such information can be identified based on resources associated with a search space set, a CORESET, or a combination thereof. Accordingly, the described techniques can be used to support the base station 105 in repeating PDCCH information so that the UE 115 can receive such information and determine various other communication aspects based on the received PDCCH information.

[0169] Figure 2 An example of a wireless communication system 200 that supports decoding downlink control information in a combined PDCCH candidate according to aspects of the present disclosure is illustrated. For example, the wireless communication system 200 may include a base station 105 and a UE 115 within a geographic coverage area 110. The base station 105 and the UE 115 may be referenced to Figure 1 Examples of corresponding devices described herein. In some examples, the wireless communication system 200 can support multiple radio access technologies, including 4G systems (such as LTE systems, LTE-A systems, or LTE-A Pro systems), and 5G systems (which can be referred to as NR systems). The wireless communication system 200 can support improvements to power consumption, spectrum efficiency, higher data rates, and in some examples, can promote enhanced efficiency of high reliability and low latency search space operations, etc.

[0170] The base station 105 may configure the UE 115 by transmitting a configuration message 210 via one or more directional beams 205 (e.g., downlink directional beams). In some examples, the base station 105 may transmit the configuration message 210 via the one or more directional beams 205 on a downlink channel (e.g., PDCCH). The configuration message 210 may include a configuration of one or more search space sets. For example, the configuration may define a search space set for a downlink control channel (e.g., PDCCH). In some examples, the configuration may be a semi-static configuration. The base station 105 may provide the semi-static configuration to the UE 115 via RRC signaling. In other examples, the base station 105 may provide the configuration of the one or more search space sets via downlink control signaling.

[0171] The search space set may include a common search space set configured for multiple UEs or a specific search space set configured for a specific UE (e.g., UE 115). UE 115 may monitor one or more control regions of the search space set to receive and decode control information or data, or both, from base station 105 on a physical channel (e.g., PDCCH, PDSCH). A control region (e.g., a control resource set) for a physical channel may be defined by a number of symbol durations, a number of mini-slot durations, or a number of slot durations. One or more control regions (e.g., one or more control resource sets) may be configured for multiple UEs. For example, multiple UEs 115 may monitor or search the control region for control information according to one or more search space sets, and each search space set may include one or more control channel candidates (e.g., also referred to as PDCCH candidates) at one or more aggregation levels. The aggregation level of the PDCCH candidates may refer to the number of control channel resources (e.g., CCEs).

[0172] In some examples, such as in a 5G system, the base station 105 may configure the UE 115 to have one or more PDCCH candidates in the search space concentration. In some examples, the UE 115 may experience a reduction in the blind decoding efficiency of the one or more PDCCH candidates in the search space concentration. That is, some of the one or more PDCCH candidates in the search space may be useless to the UE 115 due to the communication operations performed by the base station 105, and thus reduce the blind decoding efficiency of the UE 115. These communication operations may include control information or data associated with various information channels (e.g., control channels, data channels), or both. The control channel may include a PDCCH, and the physical control channel may include a physical uplink control channel (PUCCH), etc. The data channel may include a PDSCH, a physical uplink shared channel (PUSCH), etc.

[0173] In some cases, the wireless communication system 200 may support repetition of various physical channels (such as PDSCH) to improve the reliability of various types of communications. The wireless communication system 200 may also support repetition of other physical channels (such as PDCCH) to further improve the reliability of various types of communications (e.g., control information, data) in the wireless communication system 200. For example, by supporting PDCCH repetition, the UE 115 may experience an improvement in the efficiency of blind decoding of one or more PDCCH candidates in one or more search space sets. In some examples, the base station 105 may configure the UE 115 to support one or more PDCCH candidates between multiple (e.g., two or more) search space sets. For example, the UE 115 may be configured to determine and combine different PDCCH candidates between one or more search space sets and perform blind decoding on the combined PDCCH candidates. In some examples, the UE 115 may be configured to decode combined PDCCH candidates as well as individual PDCCH candidates, thereby providing increased flexibility for control information and improving the reliability of the PDCCH.

[0174] UE 115 may decode downlink control information from individual PDCCH candidates, combined PDCCH candidates, or both. In some cases, UE 115 may be able to identify when a decoded DCI corresponds to an individual PDCCH candidate or a combined PDCCH candidate. That is, relying solely on the decoding results may not be reliable in determining whether a decoded DCI corresponds to an individual or combined PDCCH candidate. If (x1, x2, x 1，2 ) is the decoding result at the UE, and x1∈{0,1} is the PDCCH candidate corresponding to (with aggregation level L in search space set (SSS) s1) The decoding result of x2∈{0,1} is the PDCCH candidate corresponding to (with aggregation level L′ in SSS s2) The decoding result, x 1，2 ∈{0, 1} corresponds to the combined PDCCH candidate and The decoding result of gNB (e.g., base station 105) is only If the gNB sends DCI only in If the gNB sends DCI in and If DCI is sent in both, UE 115 may detect (1, 1, 1), (0, 0, 1), (1, 0, 1), (0, 1, 1), (1, 0, 0), or (0, 1, 0). As such, UE 115 may not be able to reliably determine when decoded DCI corresponds to an individual or combined PDCCH candidate.

[0175] UE 115 may identify whether the decoded DCI corresponds to an individual or combined PDCCH candidate to identify scheduling information. For example, some scheduling information may be a function of the search space set or CORESET in which the DCI was detected. Such information may include constraints on when PDSCH time domain resource allocation for downlink (DL) DCI may begin, a reference for PDSCH SLIV for DCI formats 1_2, K0 value and scheduling offset (for timeDurationForQCL parameter value) for DL ​​DCI, K2 value and N2 timeline for PUSCH for uplink (DCI), rate matching around scheduled DCI for DL ​​DCI, TCI state of PDSCH when the TCI field is not included in the DCI, PUCCH resource determination for DL ​​DCI, and CORESETPoolIndex value (e.g., used for HARQ-ACK reporting, PDSCH scrambling, default quasi co-location (QCL) for PDSCH, and activated TCI state sets).

[0176] In some examples, when UE 115 is configured with a combined PDCCH candidate, UE 115 may identify that the decoded DCI corresponds to the combined PDCCH candidate. More specifically, UE 115 may assume that if the DCI is or If the same DCI is transmitted in one of or In such a case, UE 115 may perform blind decoding on the three (or more) PDCCH candidates for robustness, but UE 115 may assume that any detected DCI corresponds to a combined PDCCH candidate. If UE 115 is not configured with combined PDCCH candidates, UE 115 may identify that the decoded DCI corresponds to the PDCCH candidate from which it was decoded.

[0177] In other examples, the UE 115 may determine whether the decoded DCI corresponds to a combined PDCCH candidate based at least in part on an indicator included in the decoded DCI. In one example, a bit included in the DCI may indicate that the DCI corresponds to a combined PDCCH candidate when the bit has a first value (e.g., 1), and the bit may indicate that the DCI corresponds to an individual PDCCH candidate when the bit has a second value (e.g., 0). For example, if the UE detects (1, 0, 0) (as described above) and the indicated bit is 1, the UE 115 may assume that the DCI corresponds to a combined PDCCH candidate. If the UE detects (1, 0, 1) and the indicated bit is 0, the UE 115 may assume that the decoded DCI does not correspond to a combined PDCCH candidate.

[0178] In some cases, the indicator included in the DCI may be the RNTI used for cyclic redundancy check (CRC) scrambling. For example, the UE 115 may descramble the DCI with an RNTI having a value indicating that the decoded DCI corresponds to a combined PDCCH candidate. Another value of the RNTI may be used as an indication that the DCI does not correspond to a combined PDCCH candidate. For example, if the UE 115 detects (1, 0, 0) and the RNTI of the decoded DCI is a combined PDCCH candidate RNTI, the UE 115 assumes that the decoded DCI corresponds to a combined PDCCH candidate. If the UE 115 detects (1, 0, 1) and the RNTI of the decoded DCI is not a combined PDCCH candidate RNTI, the UE 115 assumes that the decoded DCI does not correspond to a combined PDCCH candidate.

[0179] In some cases, the PDCCH DMRS scrambling identifier may indicate whether the decoded DCI corresponds to a combined PDCCH candidate. The PDCCH scrambling identifier (e.g., the PDCCH DMRS scrambling ID) may be used for PDCCH scrambling (e.g., scrambling of the decoded bits of the DCI and / or DMRS scrambling). If, for decoding the DCI, the UE uses the assumption that the scrambling identifier (identified based on descrambling) corresponds to the combined PDCCH candidate indicator, the UE 115 may assume that the decoded DCI corresponds to the combined PDCCH candidate. If, for decoding the DCI, the UE uses the assumption that the scrambling identifier does not correspond to the combined PDCCH candidate indicator, the UE 115 may assume that the decoded DCI does not correspond to the combined PDCCH candidate.

[0180] If UE 115 identifies that the decoded DCI corresponds to a combined PDCCH candidate according to one of the techniques described above, UE 115 may utilize the techniques described with respect to the following figures to identify various communication channel characteristics, such as scheduling information, rate matching information, and the like.

[0181] Figure 3 An example of a resource map 300 that supports decoding downlink control information in a combined PDCCH candidate according to aspects of the present disclosure is illustrated. In some examples, the resource map 300 can implement aspects of the wireless communication system 100. A first search space set 305-a and a second search space set 305-b can be configured at a UE 115. These search space sets 305 can be located in the same or different time slots of the downlink resources. The UE 115 can perform blind decoding on various configured PDCCH candidates of the first search space set 305-a and the second search space set 305-b. The UE 115 can also be configured with a combined PDCCH candidate corresponding to both the first search space set 305-a and the second search space set 305-b, or corresponding to either the first search space set 305-a or the second search space set 305-b, and the UE 115 can perform blind decoding on the combined PDCCH candidate to identify DCI.

[0182] Depending on the configuration, there may be some constraints on the starting position of the PDSCH scheduled by the decoded DCI for the UE 115 (e.g., and the base station 105). For example, the scheduled PDSCH may be constrained so that it cannot start earlier than the first symbol of the scheduling PDCCH. According to Release 15, if the first symbol of the PDCCH scheduling the PDSCH is received in a symbol later than the first symbol indicated in the PDSCH time-domain resource assignment, the UE is not expected to receive a PDSCH with mapping type B in the slot.

[0183] Based on the blind decoding of the first search space set 305-a and the second search space set 305-b, the UE can decode the DCI. Figure 2 As described, the decoded DCI may correspond to an individual PDCCH candidate of one of the search space sets 305 or a combined PDCCH candidate corresponding to one or more of the search space sets 305. If the PDCCH corresponds to a combined PDCCH, the UE 115 may identify which PDCCH candidate to use to determine the PDSCH constraint. According to one option, the scheduled PDSCH may not be scheduled to start earlier than the later first symbol among the one or more search space sets (e.g., the first search space set 305-a and the second search space set 305-b). That is, the PDSCH may start during or after the later first symbol among the multiple search space sets. As Figure 3 As illustrated in , the PDSCH may be scheduled to start after point 310 (which corresponds to the first symbol of the later search space set 305 - b ).

[0184] According to another option, the scheduled PDSCH may not start earlier than the first symbol earlier among the one or more search space sets (e.g., the first search space set 305-a and the second search space set 305-b), the first symbol of the search space set with the smallest index among the multiple search space sets, or the first symbol of the CORESET with the smallest CORESET identifier among CORESETs i and j (which correspond to the first search space set 305-a and the second search space set 305-b, respectively). Thus, according to this option, the PDSCH may start during or after the symbol at 310-b. Using these options, the UE 115 and the base station 105 can identify scheduling constraints for the PDSCH when the DCI corresponds to a combination candidate.

[0185] Figure 4 An example of a resource map 400 that supports decoding downlink control information in a combined PDCCH candidate according to aspects of the present disclosure is illustrated. In some examples, the resource map 400 can implement aspects of the wireless communication system 100. A first search space set 405-a and a second search space set 405-b can be configured at a UE 115. These search space sets 405 can be located in the same or different time slots of the downlink resources. The UE 115 can perform blind decoding on various configured PDCCH candidates of the first search space set 405-a and the second search space set 405-b. The UE 115 can also be configured with combined PDCCH candidates corresponding to one or both of the first search space set 405-a and the second search space set 405-b.

[0186] The resource allocation of the PDSCH may depend on the starting symbol of the PDCCH monitoring opportunity in which the downlink assignment is detected. That is, the starting symbol of the PDCCH monitoring opportunity that schedules the PDSCH may be used as a reference symbol for the starting symbol and length parameter (SLIV) of the PDSCH. In some cases, the reference symbol may be enabled using radio resource control (RRC) signaling. When the RRC parameters enable the use of this new reference symbol, the new reference symbol may be applied to the time domain resource allocation (TDRA) entry with K0=0.

[0187] Based on the blind decoding of the first search space set 405-a and the second search space set 405-b, the UE can decode the DCI. Figure 2As described, the decoded DCI may correspond to an individual PDCCH candidate of one of the search space sets 405 or a combined PDCCH candidate corresponding to the search space sets 405. If it is identified that the PDCCH corresponds to a combined PDCCH candidate and the detected / decoded DCI is DCI format 1_2, the UE 115 may identify a reference symbol for SLIV and K0=0 for the PDSCH. According to one option, the reference symbol for SLIV may be identified as the first symbol in the later search space set of the one or more search space sets (e.g., the first search space set 405-a and the second search space set 405-b). Figure 4 As illustrated in , the reference symbol for SLIV can be identified as the symbol at position 410 - a because the symbol at position 410 - a is the starting symbol of a later search space set (eg, the second search space set 405 - b ).

[0188] According to another option, the reference symbol for SLIV can be identified as the first symbol among the one or more search space sets (e.g., the first search space set 405-a and the second search space set 405-b), the first symbol of the search space set with the smallest index among the multiple search space sets, or the first symbol of the CORESET with the smallest CORESET identifier among CORESETs i and j (which correspond to the first search space set 405-a and the second search space set 405-b, respectively). Thus, according to this option, the reference symbol can be identified as the symbol at position 410-b because the symbol at position 410-b is the first symbol of the earlier search space set (e.g., the first search space set 405-a). Using these techniques, the UE 115 and the base station 105 can identify the reference symbol for SLIV of the scheduled PDSCH.

[0189] Figure 5 An example of a resource map 500 that supports decoding downlink control information in a combined PDCCH candidate according to aspects of the present disclosure is illustrated. In some examples, the resource map 500 can implement aspects of the wireless communication system 100. A first search space set 505-a and a second search space set 505-b can be configured at a UE 115. These search space sets 505 can be located in the same or different time slots of the downlink resources. The UE 115 can perform blind decoding on various configured PDCCH candidates of the first search space set 505-a and the second search space set 505-b. The UE 115 can also be configured with combined PDCCH candidates corresponding to one or both of the first search space set 505-a and the second search space set 505-b.

[0190] According to some configurations, the time slot / time at which the DCI is received is used as a reference for scheduling the PDSCH 515. According to Release 15, the parameter K0 (which identifies the number of time slots) may be indicated as part of the TDRA field of the DCI. The reference time slot may be the time slot at which the DCI is detected (e.g., the PDSCH time slot is K0 time slots after the time slot at which the DCI is received). If the offset between the received downlink DCI and the corresponding PDSCH 515 is less than a timing threshold (e.g., timeDurationForQCL), the receiving UE 115 may determine a default setting for receiving the scheduled PDSCH 515. Otherwise, the UE may use the TCI state indicated by the DCI. The threshold may correspond to the UE capability (in units of OFDM symbols). That is, the timing threshold may be based on the duration associated with the UE radio frequency (RF) being tuned to receive the PDSCH according to the indicated TCI state (e.g., which may correspond to a receive beam).

[0191] Based on the blind decoding of the first search space set 505-a and the second search space set 505-b, the UE can decode the DCI. Figure 2 As described, the decoded DCI may correspond to an individual PDCCH candidate of one of the search space sets 505 or a combined PDCCH candidate corresponding to the search space sets 505. If the UE 115 determines that the PDCCH corresponds to the combined PDCCH candidate (according to the Figure 2 530), the UE 115 may identify a reference time slot 525 for a scheduling offset (e.g., K0 530) for the PDSCH 515. According to one option, the reference time slot 525 (e.g., for K0 530) may be identified as a time slot corresponding to a later search space set in time among a plurality of search space sets (e.g., a first search space set 505-a and a second search space set 505-b). Figure 5 , the reference time slot for K0 530 can be identified according to the second search space set 505 - b because the second search space set 505 - b is later in time than the first search space set 505 - a.

[0192] Furthermore, for determining the offset 520 between the DL DCI and the corresponding PDSCH 515 when the combined PDCCH candidate corresponds to the decoded DCI (and comparing the offset to the threshold timeDurationForQCL), the last symbol of the later search space set 505 may be used to determine the offset 520. Figure 5As illustrated in FIG, the reference symbol used to determine offset 520 is at position 510 (e.g., the last symbol of the later search space set 505-b). UE 115 may compare offset 520 with a threshold to determine the beam / QCL assumption for PDSCH 515. That is, if the offset is less than the threshold corresponding to the UE's capabilities, the UE may utilize a default setting (e.g., a default beam / QCL assumption). If the offset 520 is greater than the threshold, the UE 115 may utilize the TCI state indicated by the DCI.

[0193] Figure 6 An example of a resource map 600 that supports decoding downlink control information in a combined PDCCH candidate according to aspects of the present disclosure is illustrated. In some examples, the resource map 600 can implement aspects of the wireless communication system 100. A first search space set 605-a and a second search space set 605-b can be configured at a UE 115. These search space sets 605 can be located in the same or different time slots of the downlink resources. The UE 115 can perform blind decoding on various configured PDCCH candidates of the first search space set 605-a and the second search space set 605-b. The UE 115 can also be configured with combined PDCCH candidates corresponding to one or both of the first search space set 605-a and the second search space set 605-b.

[0194] According to some configurations, the time / time slot at which the DCI for scheduling PUSCH 615 is received can be used as a reference for determining the location of the PUSCH resources. A K2 value (which indicates the number of time slots) can be included as part of the TDRA field of the DCI. The reference time slot for the K2 value can be the time slot in which the DCI is detected. Accordingly, the time slot for PUSCH can be K2 time slots after the time slot in which the DCI is received. In addition, the value N2 (which indicates the number of OFDM symbols) can be the UE processing time for preparing for PUSCH transmission. The reference symbol for N2 can be the last symbol of the PDCCH resource. The UE 115 may not expect the PUSCH to start before N2 symbols after the last symbol of the scheduled DCI. N2 can be determined based on UE capability signaling and may depend on the subcarrier spacing.

[0195] Based on the blind decoding of the first search space set 605-a and the second search space set 605-b, the UE can decode the DCI. Figure 2 As described, the decoded DCI may correspond to an individual PDCCH candidate of one of the search space sets 605 or a combined PDCCH candidate corresponding to the search space sets 605. If the UE 115 determines that the PDCCH corresponds to the combined PDCCH candidate (according to the Figure 2The reference time slot for K2 may be identified as the time slot corresponding to the later search space set among the one or more search space sets (e.g., the first search space set 605-a and the second search space set 605-b). The reference time slot may be used to determine the time slot for PUSCH 615 (based on the K2 value). Figure 6 , the reference time slot 625 can be identified based on the time slot corresponding to the later search space set 605-b. Based on K2 630 and the reference time slot 625, the time slot used for PUSCH 615 can be identified. In addition, the reference symbol at position 610 can be identified as the last symbol of the later search space set (e.g., the second search space set 605-b). Accordingly, the UE 115 can expect that the PUSCH will not start N2 symbols 620 after the reference symbol at position 610.

[0196] Figure 7 An example of a resource map 700 that supports decoding downlink control information in a combined PDCCH candidate according to aspects of the present disclosure is illustrated. In some examples, the resource map 700 can implement aspects of the wireless communication system 100. Individual PDCCH candidates 705 can be configured at a UE 115, and the UE 115 can perform blind decoding on these PDCCH candidates to identify DCI. In some cases, the UE 115 performs blind decoding on the combined PDCCH candidate.

[0197] According to some configurations, the scheduled PDSCH 715 can be rate matched around the resources of the scheduled PDCCH. According to Release 15, if a PDSCH scheduled by a PDCCH would overlap with resources in the CORESET containing the PDCCH, the resources corresponding to the union of the detected PDCCH scheduling the PDSCH and the associated PDCCH DMRS are not available for the PDSCH. When the precoder granularity (e.g., precoderGranularity) configured in the CORESET where the PDCCH is detected is equal to all contiguous resource blocks (e.g., allContiguousRB), the associated PDCCH DMRS is identified as the DMRS in all resource element groups (REGs) of the CORESET. Otherwise, the associated DMRS is identified as the DMRS in the REG of the PDCCH.

[0198] Based on the blind decoding of PDCCH candidate 705, UE 115 can decode the DCI. Figure 2 As described, the decoded DCI may correspond to an individual PDCCH candidate 705 or a combined PDCCH candidate 705. If the UE 115 determines that the decoded DCI corresponds to the combined PDCCH candidate 705 (according to the Figure 2The PDSCH 715 may be located around the detected PDCCHs (corresponding to the PDCCHs associated with the combined PDCCHs) that schedule the PDSCH across the two search space sets. and Rate matching is performed on the resources corresponding to the union of the control channel elements (CCEs / REGs) and the associated PDCCH DMRS in both. For wideband RS (precoderGranularity=allContiguousRB is configured for CORESET i or CORESET j corresponding to the search space set), the associated PDCCH DMRS can be the DMRS in all REGs of CORESET i or CORESET j. Otherwise, the associated DMRS is the DMRS in the REG of the PDCCH. In some cases, one CORESET corresponding to the search space set may be configured with a wideband RS, while the other CORESET may not be configured with a wideband RS.

[0199] Figure 8 An example of a resource map 800 that supports decoding downlink control information in a combined PDCCH candidate according to aspects of the present disclosure is illustrated. In some examples, the resource map 800 can implement aspects of the wireless communication system 100. The resource map 800 can include a subframe 805 having a set of time slots including a time slot 810. The time slot 810 can span a carrier bandwidth (CBW) in the frequency domain and can include multiple bandwidth parts (BWPs). In some cases, each BWP includes a CORESET 815. As shown in FIG. Figure 8 As illustrated in FIG, the first BWP includes CORESET i 815-a and the second BWP includes CORESET j 815-b. Each CORESET 815 may correspond to a set of search space sets that may be used for various scheduling determinations when the decoded DCI corresponds to a combined PDCCH candidate, such as with respect to FIG. Figures 2 to 7 described.

[0200] In some scenarios, the decoded DCI scheduling the PDSCH may not include a TCI field. For example, the TCI field may not be configured for a particular CORESET 815, or DCI format 1_0 may be used and may not include a TCI field. In such cases, when the scheduling offset is greater than a certain threshold, then the TCI state / QCI assumption for the PDSCH may be determined based on the TCI state / QCI assumption of the scheduling CORESET 815. According to Release 15, if TCI-PresentInDCI is not configured for the CORESET scheduling the PDSCH (TCI present in DCI) or the PDSCH is scheduled by DCI format 1_0, and the time offset between the received DL DCI and the corresponding PDSCH is greater than or equal to the threshold timeDurationForQCL for determining PDSCH antenna port quasi co-location (where the threshold is based on reported UE capabilities), then the UE 115 assumes that the TCI state or QCL assumption for the PDSCH is the same as that applied to the CORESET for the PDCCH transmission.

[0201] When UE 115 determines that the decoded DCI corresponds to a combined PDCCH candidate (according to Figure 2 When the combined PDCCH candidate is detected across two CORESETs i 815-a and j 815-b (which correspond to one or more search space sets) and a PDSCH (e.g., Figure 7 When the DCI scheduled by the PDSCH 715 does not include the TCI field, the UE 115 can determine whether the two CORESETs 815 are the same (e.g., whether i=j). Figure 8), the same rules as Release 15 may apply (e.g., the TCI state of CORESET i / j may be used). Thus, the TCI state / QCL assumption is determined based on CORESET i / j. However, if CORESET i≠j (these CORESETs 815 are not identical), then according to one option, the TCI state and / or QCL assumption for the PDSCH may be determined based on the TCI state / QCL assumption of one of CORESET i 815-a or j 815-b based on CORESET selection rules. According to these rules, the TCI state and / or QCL assumption may be determined based on the selected CORESET. According to a first CORESET selection rule, the CORESET 815 with the lowest or highest CORESET ID may be used to determine the TCI state and / or QCL assumption for the PDSCH. According to a second CORESET selection rule, the CORESET 815 corresponding to the search space set with the lowest or highest search space set ID may be used to determine the TCI state and / or QCL assumption. According to the third CORESET selection rule, the CORESET 815 corresponding to the search space set that starts or ends earlier or later in the time domain can be used to determine the TCI state and / or QCL assumption. Thus, the third CORESET selection rule can consider the resources of the search space set including various PDCCH candidates. Any one of these rules or any combination of these rules can be used for CORESET selection.

[0202] In the case where a combined PDCCH candidate across two CORESETs i 815-a and j 815-j (which corresponds to multiple search space sets) is detected, the DCI scheduling the PDSCH does not include a TCI field, and CORESET i≠j, then both TCI states and / or QCL assumptions of CORESETs i 815-a and j 815-j can be assumed for the PDSCH. That is, the PDSCH can be a multi-TCI state with multiple SDM, FDM, and TDM schemes.

[0203] In some examples, UE 115 determines the PUCCH resources based on the downlink DCI. In Release 15, the DCI may include a PUCCH resource indicator (PRI) with three bits. These three bits may represent up to eight possibilities of PUCCH resources within a PUCCH resource set. However, the first PUCCH resource set (of the four sets) may contain up to 32 PUCCH resources. In this case, the PRI alone may not be able to determine the PUCCH resources for HARQ-A transmission. Instead, the PUCCH resources may be a function of the PRI, the number of control channel elements (CCEs) of the CORESET where the DCI is received, and the index of the first CCE in the CORESET where the DCI is received. The following formula may be used to determine the PUCCH resource set:

[0204]

[0205] Thus, the PUCCH resources may vary depending on the PRI (eg, Δ PRI ), the number of CCEs in the CORSSET where the DCI is received (e.g., N CCE，p ) and the index of the first CCE received by DCI in CORESET (e.g., n CCE，p ) to confirm.

[0206] When a combined PUCCH candidate is detected / identified (e.g., based on Figure 2

[0066] When a PUCCH resource is identified based on a CORESET selected according to a CORESET selection rule (as described in the techniques described above) and the detected DCI schedules a PDSCH, the UE 115 may identify the PUCCH resource according to various options. These options may be similar to those discussed with respect to TCI state / QCL assumption determination. According to one option, the starting CCE and number of CCEs for PUCCH determination may be identified based on the CORESET selected according to the CORESET selection rule. According to a first CORESET selection rule, the CORESET 815 with the lowest or highest CORESET ID may be used to determine the starting CCE and number of CCEs for identifying the PUCCH resource. According to a second CORESET selection rule, the CORESET 815 corresponding to the search space set with the lowest or highest search space set ID may be used to determine the starting CCE and number of CCEs for identifying the PUCCH resource. According to a third CORESET selection rule, the CORESET 815 corresponding to a search space set that starts or ends earlier or later in the time domain may be used to determine the starting CCE and number of CCEs for identifying the PUCCH resource. Thus, the third CORESET selection rule may consider the resources of the search space set including the various PDCCH candidates.In addition, any one of these rules or any combination thereof may be used.

[0207] According to another option, when the combined PDCCH candidate corresponds to decoded DCI, in addition to the PRI value included in the DCI, the PUCCH resource determination may also be a function of two starting CCE indices and two CCE numbers corresponding to two CORESETs 815. Thus, by using these options, the UE 115 and the base station 105 can identify PUCCH resources for HARQ-ACK transmission.

[0208] In some scenarios, according to Release 16, a CORESET pool index (e.g., CORESETPoolIndex) of 0 or 1 may be configured for each CORESET. These values ​​may correspond to different modes for HARQ-ACK feedback (e.g., acknowledgment (ACK) or negative acknowledgment (NAK)). According to the separate HARQ-ACK mode, two HARQ-ACK codebooks may be sent on two different PUCCHs to respectively ACK / NAK the PDSCH scheduled by the PDCCH detected in the CORESET with the first / second CORESETPoolIndex value. That is, the HARQ-ACK is separated based on the CORESET in which the scheduled DCI (scheduled PUSCH) is detected. These separate HARQ-ACK codebooks may be sent to separate TRPs. According to the joint HARQ-ACK mode, different positions in the HARQ-ACK codebook are used to ACK / NAK the PDSCH scheduled by the PDCCH detected in the CORESET with the first / second CORESETPoolIndex value. Accordingly, depending on whether separate or joint mode is used for HARQ-ACK, the ACK / NAK may be a function of the CORESETPoolIndex of the CORESET that schedules the PDSCH.

[0209] When a combined PDCCH candidate is detected / identified across one or both of the two CORESETs i 815-a and j 815-b (e.g., based on the Figure 2

[0066] In some embodiments, when the two CORESETs have different CORESETPoolIndex values, the detected DCI schedules a PDSCH, and the UE 115 is configured with either a standalone HARQ-Ack or joint HARQ-Ack mode, the CORESETPoolIndex corresponding to the CORESET selected based on the CORESET selection rule may be identified. This rule may be similar to the rules described above with respect to PUCCH resource determination and TCI state / QCL assumption determination. According to a first option, one of the CORESETPoolIndex values ​​(of one of the CORESETs 815) is considered for HARQ-Ack codebook determination and reporting because the combined PDCCH candidates schedule one PDSCH. According to the first rule, the CORESETPoolIndex may be selected based on a default value (e.g., a value of 0). According to a second rule, the CORESETPoolIndex corresponding to the lowest or highest CORESET identifier may be identified. According to a third rule, the CORESETPoolIndex of the CORESET corresponding to the lowest or highest search space set ID may be used. According to a fourth rule, the CORESETPoolIndex of the CORESET corresponding to the search space set that starts or ends earlier or later in the time domain may be used. According to another option, two separate ACK / NAKs (having the same value) may be pre-ordered for the scheduled PDSCH based on the corresponding CORESETPoolIndex values. Any one or a combination of these rules may be used.

[0210]

[0066] Furthermore, according to Release 16, when different CORESETs have different CORESETPoolIndex values, two different values ​​for PDSCH scrambling sequence initialization may be considered. The value used for PDSCH scrambling sequence initialization may be a function of the CORESETPoolIndex of the CORESET that detected the scheduled DCI. When a UE 115 is capable of two simultaneous default beams (for receiving PDSCH when the scheduling offset between the scheduled PDCCH and the scheduled PDSCH is less than timeDurationForQCL), the default beam used for PDSCH scheduled with DCI may depend on the CORESETPoolIndex value of the CORESET that sent the DCI. Furthermore, there may be two active TCI state sets corresponding to these two CORESETPoolIndex values. The TCI field in the DCI indicates one TCI state for the PDSCH from the corresponding set. The set utilized may depend on the CORESETPoolIndex of the CORESET that sent the DCI.

[0211] When a combined PDCCH candidate is detected / identified across one or both of the two CORESETs i 815-a and j 815-b (e.g., based on the Figure 2

[0066] In some embodiments, when a CORESETPoolIndex value is used for a search space set that starts or ends earlier in the time domain, the CORESETPoolIndex may be selected based on a default value (e.g., a value of 0). In some embodiments, a CORESETPoolIndex value ... Thus, these CORESETPoolIndex selection rules can be used to determine HARQ-Ack codebook determination as well as PDSCH scrambling sequence initialization, default beam identification and active TCI state. Any one of these rules or any combination of these rules can be used.

[0212] Figure 9 A process flow diagram 900 is illustrated to support decoding downlink control information in a combined PDCCH candidate in accordance with aspects of the present disclosure. In some examples, the process flow diagram 900 can implement aspects of the wireless communication system 100. The process flow diagram 900 can include a base station 105 and a UE 115, which can be referenced. Figures 1 to 8 Examples of corresponding devices described.

[0213] At 905, UE 115 receives DCI from base station 105. At 910, UE 115 may identify a first physical downlink control channel candidate, a second physical downlink control channel candidate, and a combined physical downlink control channel candidate. These candidate / search space sets may be configured at UE 115. In some cases, the first physical downlink control channel candidate corresponds to a first search space set, the second physical downlink control channel candidate corresponds to a second search space set, and the combined physical downlink control channel candidate corresponds to both the first search space set and the second search space set. In some cases, the combined physical downlink control channel candidate corresponds to one of the search space sets.

[0214] At 915, the UE 115 may decode downlink control information from at least one of the first physical downlink control channel candidate, the second physical downlink control channel candidate, and the combined physical downlink control channel candidate based at least in part on the identification.

[0215] At 920, UE 115 may identify that the decoded downlink control information corresponds to a combined physical downlink control channel candidate. This identification may be based on configuration of the combined PDCCH candidate at UE 115, an indicator (e.g., a bit or RNTI) included in the DCI, and / or a scrambling identifier value identified based on the descrambled DCI.

[0216] At 925, the base station identifies that the transmitted DCI corresponds to the combined physical downlink control channel candidate. The base station 105 may indicate that the transmitted DCI corresponds to the combined physical downlink control channel candidate using an indicator (e.g., a bit or RNTI value) in the DCI or by scrambling the DCI using a scrambling identifier.

[0217] At 930, the UE 115 and the base station 105 communicate based at least in part on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate. In some cases, the UE 115 and the base station 105 communicate on PDSCH, PUSCH, and / or PUCCH resources identified based on identifying that the DCI corresponds to the combined physical downlink control channel candidate and using various techniques as described herein.

[0218] Figure 10 A block diagram 1000 is shown of a device 1005 that supports decoding downlink control information in a combined PDCCH candidate in accordance with various aspects of the present disclosure. The device 1005 can be an example of various aspects of a UE 115 as described herein. The device 1005 can include a receiver 1010, a communication manager 1015, and a transmitter 1020. The device 1005 can also include a processor. Each of these components can be in communication with each other (e.g., via one or more buses).

[0219] The receiver 1010 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to decoding downlink control information in combined PDCCH candidates, etc.). The information may be passed to other components of the device 1005. The receiver 1010 may be a reference Figure 13 Examples of aspects of the described transceiver 1320. The receiver 1010 may utilize a single antenna or a collection of antennas.

[0220] The communication manager 1015 may receive downlink control information from a base station. The communication manager 1015 may identify a first physical downlink control channel candidate, a second physical downlink control channel candidate, and a combined physical downlink control channel candidate. The communication manager 1015 may also decode downlink control information from at least one of the first physical downlink control channel candidate, the second physical downlink control channel candidate, and the combined physical downlink control channel candidate based on the identification. The communication manager 1015 may also identify that the decoded downlink control information corresponds to the combined physical downlink control channel candidate. The communication manager 1015 may also communicate with the base station based on identifying that the decoded downlink control information corresponds to the combined physical downlink control channel candidate. The communication manager 1015 may be an example of aspects of the communication manager 1310 described herein.

[0221] The communication manager 1015 or its subcomponents may be implemented in hardware, in code executed by a processor (e.g., software or firmware), or any combination thereof. If implemented in code executed by a processor, the functions of the communication manager 1015 or its subcomponents may be performed by a general-purpose processor, a DSP, an application-specific integrated circuit (ASIC), an FPGA or other programmable logic device designed to perform the functions described in this disclosure, discrete gate or transistor logic, discrete hardware components, or any combination thereof.

[0222] The communication manager 1015 or its subcomponents can be physically located at various locations, including being distributed such that portions of functionality are implemented by one or more physical components at different physical locations. In some examples, according to various aspects of the present disclosure, the communication manager 1015 or its subcomponents can be separate and distinct components. In some examples, according to various aspects of the present disclosure, the communication manager 1015 or its subcomponents can be combined with one or more other hardware components, including but not limited to input / output (I / O) components, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof.

[0223] The transmitter 1020 may transmit signals generated by other components of the device 1005. In some examples, the transmitter 1020 may be co-located with the receiver 1010 in a transceiver module. For example, the transmitter 1020 may be a reference Figure 13 Examples of aspects of the described transceiver 1320. The transmitter 1020 may utilize a single antenna or a collection of antennas.

[0224] Based on receiving the DCI from the base station 105 and identifying that the DCI corresponds to the combined PDCCH candidate, the processor of the UE 115 (e.g., controlling the receiver 1010, the transmitter 1030, or the reference signaling module 1030) Figure 13The transceiver 1320 described herein can efficiently identify communication configurations for various channels, including PDSCH, PUSCH, and PUCCH. Furthermore, the processor of the UE 115 can decode the combined PDCCH candidate. The processor of the UE 115 can then activate one or more processing units upon identifying the PDCCH candidate and identify the decoded DCI as corresponding to the combined PDCCH candidate. Thus, when the DCI is decoded, the processor can be ready to identify scheduling information for the various channels and communicate with the base station 105 on the identified channels.

[0225] Figure 11 A block diagram 1100 of a device 1105 that supports decoding downlink control information in a combined PDCCH candidate according to aspects of the present disclosure is shown. The device 1105 can be an example of aspects of the device 1005 or UE 115 as described herein. The device 1105 may include a receiver 1110, a communication manager 1115, and a transmitter 1145. The device 1105 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0226] The receiver 1110 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to decoding downlink control information in combined PDCCH candidates, etc.). The information may be passed to other components of the device 1105. The receiver 1110 may be a reference Figure 13 Examples of aspects of the described transceiver 1320. The receiver 1110 may utilize a single antenna or a collection of antennas.

[0227] The communication manager 1115 may be an example of aspects of the communication manager 1015 as described herein. The communication manager 1115 may include a DCI interface 1120, a PDCCH candidate identifier 1125, a DCI decoder 1130, a combined candidate identifier 1135, and a communication interface 1140. The communication manager 1115 may be an example of aspects of the communication manager 1310 described herein.

[0228] The DCI interface 1120 may receive downlink control information from a base station.

[0229] The PDCCH candidate identifier 1125 may identify a first physical downlink control channel candidate, a second physical downlink control channel candidate, and a combined physical downlink control channel candidate.

[0230] The DCI decoder 1130 may decode downlink control information from at least one of the first physical downlink control channel candidate, the second physical downlink control channel candidate, and the combined physical downlink control channel candidate based on the identification.

[0231] The combined candidate identifier 1135 may identify that the decoded downlink control information corresponds to a combined physical downlink control channel candidate.

[0232] The communication interface 1140 may communicate with the base station based on identifying that the decoded downlink control information corresponds to the combined physical downlink control channel candidate.

[0233] The transmitter 1145 may transmit signals generated by other components of the device 1105. In some examples, the transmitter 1145 may be co-located with the receiver 1110 in a transceiver module. For example, the transmitter 1145 may be a reference Figure 13 Examples of aspects of the described transceiver 1320. The transmitter 1145 may utilize a single antenna or a collection of antennas.

[0234] Figure 12 A block diagram 1200 is shown of a communication manager 1205 that supports decoding downlink control information in a combined PDCCH candidate in accordance with aspects of the present disclosure. The communication manager 1205 may be an example of aspects of the communication manager 1015, the communication manager 1115, or the communication manager 1310 described herein. The communication manager 1205 may include a DCI interface 1210, a PDCCH candidate identifier 1215, a DCI decoder 1220, a combined candidate identifier 1225, a communication interface 1230, a PDSCH identifier 1235, a PDSCH interface 1240, a reference symbol identifier 1245, a reference slot identifier 1250, a PUSCH identifier 1255, a precoder identifier 1260, a TCI component 1265, a CORESET identifier 1270, a PUCCH identifier 1275, a CORESET pool index component 1280, and a HARQ codebook component 1285. Each of these modules may communicate directly or indirectly with each other (eg, via one or more buses).

[0235] The DCI interface 1210 may receive downlink control information from a base station.

[0236] The PDCCH candidate identifier 1215 may identify a first physical downlink control channel candidate, a second physical downlink control channel candidate, and a combined physical downlink control channel candidate.

[0237] In some examples, the PDCCH candidate identifier 1215 may identify a first physical downlink control channel candidate in a first search space set, a second physical downlink control channel candidate in a second search space set, and a combined physical downlink control channel candidate in the first search space set and the second search space set.

[0238] The DCI decoder 1220 may decode downlink control information from at least one of the first physical downlink control channel candidate, the second physical downlink control channel candidate, and the combined physical downlink control channel candidate based on the identification.

[0239] In some examples, DCI decoder 1220 may identify an indication in the downlink control information that the decoded downlink control information corresponds to a combined physical downlink control channel candidate.

[0240] In some examples, DCI decoder 1220 may descramble a cyclic redundancy check of the downlink control information using a radio network temporary identifier indicating that the decoded downlink control information corresponds to a combined physical downlink control channel candidate.

[0241] In some examples, DCI decoder 1220 may decode the downlink control information using at least a scrambling identifier indicating that the decoded downlink control information corresponds to a combined physical downlink control channel candidate.

[0242] In some examples, DCI decoder 1220 may descramble the coded bits of the demodulation reference signal and the downlink control information using a scrambling identifier that indicates that the decoded downlink control information corresponds to a combined physical downlink control channel candidate.

[0243] In some cases, the indication includes a bit indicating that the decoded downlink control information corresponds to a combined physical downlink control channel candidate.

[0244] Combined candidate identifier 1225 may identify that the decoded downlink control information corresponds to a combined physical downlink control channel candidate.

[0245] The communication interface 1230 may communicate with the base station based on identifying that the decoded downlink control information corresponds to the combined physical downlink control channel candidate.

[0246] The PDSCH identifier 1235 may identify a starting position of a physical downlink shared channel based on identifying that the decoded downlink control information corresponds to a combined physical downlink control channel candidate.

[0247] In some examples, the PDSCH identifier 1235 may identify a starting position during or after a first symbol of a later search space set between the first search space set and the second search space set.

[0248] In some examples, the PDSCH identifier 1235 may identify the starting position during or after the first codeword of the earlier search space set in the first search space set and the second search space set, during or after the first codeword of the search space set with the smallest index in the first search space set or the second search space set, or during or after the first codeword of the control resource set with the smallest identifier in the first control resource set and the second control resource set.

[0249] In some examples, the PDSCH identifier 1235 may identify the starting position of the physical downlink shared channel based on a reference symbol.

[0250] In some examples, the PDSCH identifier 1235 may identify the starting position of the physical downlink shared channel based on a reference time slot.

[0251] In some examples, the PDSCH identifier 1235 may identify an offset slot number in the downlink control information, where the starting position of the physical downlink shared channel is identified relative to the reference slot using the offset slot number.

[0252] In some examples, the PDSCH identifier 1235 may compare the offset slot number to a UE capability threshold to determine whether to receive the physical downlink shared channel using default settings or settings indicated by the decoded downlink control information.

[0253] In some examples, the PDSCH identifier 1235 may determine to use default settings to receive the physical downlink shared channel based on determining that the offset is less than a UE capability threshold according to the comparison.

[0254] In some examples, the PDSCH identifier 1235 may determine to use the setting indicated by the downlink control information based on determining that the offset is greater than a UE capability threshold based on the comparison.

[0255] In some examples, the PDSCH identifier 1235 may identify that the physical downlink shared channel scheduled by the downlink control information is rate matched around resources corresponding to the downlink control information in the first search space set and the second search space set based on identifying that the decoded downlink control information corresponds to the combined physical downlink control channel candidate. In some examples, the PDSCH identifier 1235 may identify that the physical downlink shared channel scheduled by the downlink control information is rate matched around resources corresponding to the downlink control information in the first physical downlink control channel candidate and the second physical downlink control channel candidate based on identifying that the decoded downlink control information corresponds to the combined physical downlink control channel candidate.

[0256] In some examples, the PDSCH identifier 1235 may identify the physical downlink shared channel based on precoder granularity and further rate matched around one or more demodulation reference signals.

[0257] In some examples, the PDSCH identifier 1235 may identify a reference time slot based at least in part on identifying that the decoded downlink control information corresponds to a combined physical downlink control channel candidate based on a later time slot of the first search space set and the second search space set, and identify a starting position of a physical downlink shared channel based at least in part on the reference time slot.

[0258] In some examples, DCI decoder 1220 may identify a resource allocation field in the downlink control information, wherein the starting position of the physical downlink shared channel is identified relative to the reference time slot using the value of the resource allocation field. In some examples, DCI decoder 1220 may identify that the downlink control information corresponding to the combined physical downlink control channel candidate schedules the physical downlink shared channel.

[0259] In some examples, the PDSCH identifier 1235 may identify a reference symbol based on the last symbol of the later of the first search space set and the second search space set, identify an offset between the reference symbol and a physical downlink shared channel scheduled by the decoded downlink control information, and compare the offset with a UE capability threshold to determine whether to use a default setting or a setting indicated by the decoded downlink control information to receive the physical downlink shared channel.

[0260] In some cases, the default setting and the setting indicated by the decoded downlink control information correspond to respective receive beams for receiving a physical downlink shared channel.

[0261] In some cases, when the precoder granularity indicates contiguous resource blocks of a control resource set, the one or more demodulation reference signals correspond to resource element groups of the control resource set.

[0262] In some cases, when the precoder granularity does not indicate contiguous resource blocks of a control resource set, the one or more demodulation reference signals correspond to a group of resource elements that group physical downlink control channel candidates.

[0263] The PDSCH interface 1240 may receive a physical downlink shared channel based on a starting position.

[0264] In some examples, the PDSCH interface 1240 may receive a physical downlink shared channel based on the identified starting location.

[0265] The reference symbol identifier 1245 may identify a reference symbol for identifying a starting position of a physical downlink shared channel based on identifying that the decoded downlink control information corresponds to a combined physical downlink control channel candidate.

[0266] In some examples, the reference symbol identifier 1245 may identify the first symbol in the later of the first search space set and the second search space set.

[0267] In some examples, the reference codeword identifier 1245 may identify the first codeword in the earlier of the first search space set and the second search space set, the first codeword in the search space set with the smallest index in the first search space set or the second search space set, or the first codeword in the control resource set with the smallest identifier in the first control resource set and the second control resource set.

[0268] In some examples, the reference symbol identifier 1245 may identify a downlink control information format for the decoded downlink control information, wherein identifying the reference symbol is based on identifying the downlink control information format.

[0269] The reference time slot identifier 1250 may identify a reference time slot from the later time slot of the first search space set and the second search space set based on identifying that the decoded downlink control signal corresponds to the combined physical downlink control channel candidate.

[0270] In some examples, the reference time slot identifier 1250 may identify a reference time slot from a later time slot of the first search space set and the second search space set based on identifying that the decoded downlink control signal corresponds to a combined physical downlink control channel candidate.

[0271] The PUSCH identifier 1255 may identify the starting position of the physical uplink shared channel based on the reference time slot.

[0272] In some examples, PUSCH identifier 1255 may identify a reference time slot from the later time slot of the first search space set and the second search space set based at least in part on identifying that the decoded downlink control information corresponds to the combined physical downlink control channel candidate, and identify a starting position of a physical uplink shared channel based at least in part on the reference time slot. In some examples, PUSCH identifier 1255 may transmit the physical uplink shared channel based at least in part on identifying the starting position.

[0273] In some examples, the DCI decoder 1220 may identify a resource allocation field included in the decoded downlink control information, where the starting position is identified relative to a reference time slot based on a value of the resource allocation field.

[0274] In some examples, PUSCH identifier 1255 can identify a reference symbol based at least in part on identifying that the decoded downlink control information corresponds to a combined physical downlink control channel candidate according to a last symbol of a later search space set of the first search space set and the second search space set, and identify that the scheduled physical uplink control channel begins a number of symbols after the reference symbol. In some examples, the number of symbols is determined at least in part based on the capabilities of the UE.

[0275] The precoder identifier 1260 may identify a precoder granularity for a control resource set associated with the first search space set or the second search space set. In some examples, the precoder identifier 1260 may identify a precoder granularity for a control resource set associated with the first physical downlink control channel candidate and the second physical downlink control channel candidate.

[0276] The TCI component 1265 can identify that the decoded downlink control information does not include a transmission configuration indicator status field indicating a transmission configuration indicator status for a physical downlink shared channel scheduled by the downlink control information.

[0277] In some examples, the TCI component 1265 may identify a transmission configuration indicator state, quasi-co-location, or both for a scheduled physical downlink shared channel based on the first control resource set or the second control resource set corresponding to the combined physical downlink shared channel candidate based on identifying that the first control resource set corresponds to the second control resource set.

[0278] In some examples, the TCI component 1265 may determine whether an offset between the decoded downlink control information and the corresponding physical downlink shared channel is greater than or equal to a UE capability threshold, where a transmission configuration indicator state, quasi co-location, or both is identified based on determining that the offset is greater than the capability threshold.

[0279] In some examples, the TCI component 1265 may identify a transmission configuration indicator state, quasi co-location, or both for a scheduled physical downlink shared channel according to the first control resource set or the second control resource set based on identifying that the first control resource set is different from the second control resource set.

[0280] In some examples, the TCI component 1265 may identify a transmission configuration indicator state, quasi co-location, or both for a scheduled physical downlink shared channel according to the first control resource set and the second control resource set based on identifying that the first control resource set is different from the second control resource set.

[0281] In some cases, the transmission configuration indicator state, quasi co-location, or both corresponds to a multi-beam or multiple transmission configuration indicator state physical downlink shared channel based on the identification.

[0282] The CORESET identifier 1270 can identify whether the first control resource set corresponding to the first search space set is the same control resource set as the second control resource set corresponding to the second search space set based on identifying that the decoded downlink control information corresponds to a combined physical downlink control channel candidate and identifying that the decoded downlink control information does not include a transmission configuration indicator status field.

[0283] In some examples, the CORESET identifier 1270 may identify the transmission configuration indicator state, quasi-co-location, or both of the scheduled physical downlink shared channel according to the first control resource set or the second control resource set based on: the lower control resource set identifier of the first control resource set and the second control resource set, the higher control resource set identifier of the first control resource set and the second control resource set, the lower search space set identifier of the first search space set and the second search space set, the higher search space set identifier of the first search space set and the second search space set, the starting position of the first search space set and the second search space set, the ending position of the first search space set or the second search space set, or any combination thereof.

[0284] The PUCCH identifier 1275 can identify resources of the physical uplink control channel for hybrid automatic repeat request transmission of the physical uplink shared channel based on the number of control channel elements and the starting control channel element index from the first control resource set corresponding to the first search space set or from the second control resource set corresponding to the second search space set based on identifying the decoded downlink control information corresponding to the combined physical downlink control channel candidate.

[0285] In some examples, the PUCCH identifier 1275 may identify resources of the physical uplink control channel according to the number of control channel elements and the starting control channel element index from the first control resource set or the second control resource set based on: the lower control resource set identifier of the first control resource set and the second control resource set, the higher control resource set identifier of the first control resource set and the second control resource set, the lower search space set identifier of the first search space set and the second search space set, the higher search space set identifier of the first search space set and the second search space set, the starting position of the first search space set and the second search space set, the ending position of the first search space set or the second search space set, or any combination thereof.

[0286] In some examples, the PUCCH identifier 1275 may identify resources of the physical uplink control channel based on the number of control channel elements and the starting control channel element index from both a first control resource set corresponding to the first search space set and a second control resource set corresponding to the second search space set based on identifying that the decoded downlink control information corresponds to a combined physical downlink control channel candidate.

[0287] CORESET pool index component 1280 can identify, based on identifying that the decoded downlink control information corresponds to a combined physical downlink control channel candidate, that a first control resource set pool index for a first control resource set corresponding to a first search space set is different from a second control resource set pool index for a second control resource set corresponding to a second search space set.

[0288] In some examples, the CORESET pool index component 1280 may identify a physical downlink scrambling sequence initialization value, a default beam for a physical downlink shared channel scheduled via decoded downlink control information, an activated transmission configuration indicator state set, or any combination thereof based on the first control resource set pool index or the second control resource set pool index.

[0289] In some examples, the CORESET pool index component 1280 may identify a control resource set pool index value corresponding to: a lower control resource set identifier of the first control resource set and the second control resource set, a higher control resource set identifier of the first control resource set and the second control resource set, a lower search space set identifier of the first search space set and the second search space set, a higher search space set identifier of the first search space set and the second search space set, a starting position of the first search space set and the second search space set, an ending position of the first search space set or the second search space set, or any combination thereof, wherein a physical downlink scrambling sequence initialization value, a default beam for a physical downlink shared channel scheduled via decoded downlink control information, an activated transmission configuration indicator state set, or any combination thereof is identified based on the control resource set pool index value.

[0290] The HARQ codebook component 1285 may identify a hybrid automatic repeat request acknowledgment codebook based on the first control resource pool index or the second control resource pool index based on identifying that the first control resource pool index is different from the second control resource pool index. In some examples, the HARQ codebook component 1285 may transmit a hybrid automatic repeat request acknowledgment codebook for the scheduled physical downlink control channel candidate. In some examples, the HARQ codebook component 1285 may transmit a hybrid automatic repeat request acknowledgment codebook for the scheduled physical downlink control channel candidate using the same value based at least in part on identifying a hybrid automatic repeat request acknowledgment codebook based at least in part on the first control resource pool index and the second control resource pool index.

[0291] In some examples, the HARQ codebook component 1285 may identify fixed control resource pool index values ​​for the first control resource pool index and the second control resource pool index, wherein the hybrid automatic repeat request acknowledgment codebook is identified according to the fixed control resource pool index value.

[0292] In some examples, the HARQ codebook component 1285 may identify a control resource set pool index value corresponding to: a fixed value, a lower control resource set identifier of the first control resource set and the second control resource set, a higher control resource set identifier of the first control resource set and the second control resource set, a lower search space set identifier of the first search space set and the second search space set, a higher search space set identifier of the first search space set and the second search space set, a starting position of the first search space set and the second search space set, an ending position of the first search space set or the second search space set, or any combination thereof, wherein the hybrid automatic repeat request acknowledgment codebook is identified based on the control resource set pool index value.

[0293] In some examples, the HARQ codebook component 1285 may identify a hybrid automatic repeat request acknowledgment codebook according to the first control resource pool index and the second control resource pool index based on identifying that the first control resource pool index is different from the second control resource pool index.

[0294] Figure 13 A diagram of a system 1300 including a device 1305 that supports decoding downlink control information in a combined PDCCH candidate in accordance with various aspects of the present disclosure is shown. The device 1305 can be an example of, or include components of, the device 1005, device 1105, or UE 115 as described herein. The device 1305 may include components for two-way voice and data communication, including components for transmitting and receiving communications, including a communication manager 1310, an I / O controller 1315, a transceiver 1320, an antenna 1325, a memory 1330, and a processor 1340. These components may be in electronic communication via one or more buses (e.g., bus 1345).

[0295] The communication manager 1310 may receive downlink control information from a base station. The communication manager 1310 may identify a first physical downlink control channel candidate, a second physical downlink control channel candidate, and a combined physical downlink control channel candidate. Based on the identification, the communication manager 1310 may decode downlink control information from at least one of the first physical downlink control channel candidate, the second physical downlink control channel candidate, and the combined physical downlink control channel candidate. The communication manager 1310 may identify that the decoded downlink control information corresponds to the combined physical downlink control channel candidate. Based on the identification that the decoded downlink control information corresponds to the combined physical downlink control channel candidate, the communication manager 1310 may communicate with the base station.

[0296] I / O controller 1315 can manage input and output signals for device 1305. I / O controller 1315 can also manage peripheral devices that are not integrated into device 1305. In some cases, I / O controller 1315 can represent a physical connection or port to an external peripheral device. In some cases, I / O controller 1315 can utilize an operating system, such as MS- MS- OS / or another known operating system. In other cases, I / O controller 1315 may represent or interact with a modem, keyboard, mouse, touch screen, or similar device. In some cases, I / O controller 1315 may be implemented as part of a processor. In some cases, a user may interact with device 1305 via I / O controller 1315 or via hardware components controlled by I / O controller 1315.

[0297] The transceiver 1320 can communicate bidirectionally via one or more antennas, wired or wireless links, as described above. For example, the transceiver 1320 can represent a wireless transceiver and can communicate bidirectionally with another wireless transceiver. The transceiver 1320 can also include a modem to modulate packets and provide the modulated packets to the antenna for transmission, and demodulate packets received from the antenna.

[0298] In some cases, a wireless device may include a single antenna 1325. However, in some cases, the device may have more than one antenna 1325, which may be capable of transmitting or receiving multiple wireless transmissions concurrently.

[0299] Memory 1330 may include RAM and ROM. Memory 1330 may store computer-readable, computer-executable code 1335 including instructions that, when executed, cause the processor to perform the various functions described herein. In some cases, memory 1330 may include, among other things, a basic input / output system (BIOS), which may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0300] The processor 1340 may include an intelligent hardware device (e.g., a general-purpose processor, a digital signal processor (DSP), a CPU, a microcontroller, an ASIC, a field programmable gate array (FPGA), a programmable logic device, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, the processor 1340 may be configured to operate the memory array using a memory controller. In other cases, the memory controller may be integrated into the processor 1340. The processor 1340 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 1330) to cause the device 1305 to perform various functions (e.g., supporting the function or task of decoding downlink control information in the combined PDCCH candidate).

[0301] The code 1335 may include instructions for implementing various aspects of the present disclosure, including instructions for supporting wireless communications. The code 1335 may be stored in a non-transitory computer-readable medium, such as system memory or other types of memory. In some cases, the code 1335 may not be directly executed by the processor 1340, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein.

[0302] Figure 14A block diagram 1400 is shown of a device 1405 that supports decoding downlink control information in a combined PDCCH candidate in accordance with various aspects of the present disclosure. The device 1405 may be an example of various aspects of a base station 105 as described herein. The device 1405 may include a receiver 1410, a communication manager 1415, and a transmitter 1420. The device 1405 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0303] Receiver 1410 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to decoding downlink control information in combined PDCCH candidates, etc.). The information may be passed to other components of device 1405. Receiver 1410 may be a reference Figure 17 Examples of aspects of the described transceiver 1720. The receiver 1410 may utilize a single antenna or a collection of antennas.

[0304] The communication manager 1415 may transmit downlink control information to the UE, where the downlink control information corresponds to a first physical downlink control channel candidate, a second physical downlink control channel, or a combined physical downlink control channel candidate. The communication manager 1415 may also, based on the transmission, identify that the transmitted downlink control channel candidate corresponds to the combined physical downlink control channel candidate. The communication manager 1415 may also communicate with the UE based on identifying that the decoded downlink control information corresponds to the combined physical downlink control channel candidate. The communication manager 1415 may be an example of aspects of the communication manager 1710 described herein.

[0305] The communication manager 1415 or its subcomponents may be implemented in hardware, in code executed by a processor (e.g., software or firmware), or any combination thereof. If implemented in code executed by a processor, the functions of the communication manager 1415 or its subcomponents may be performed by a general-purpose processor, a DSP, an application-specific integrated circuit (ASIC), an FPGA or other programmable logic device designed to perform the functions described in this disclosure, discrete gate or transistor logic, discrete hardware components, or any combination thereof.

[0306] The communication manager 1415 or its subcomponents can be physically located at various locations, including being distributed such that portions of the functionality are implemented by one or more physical components at different physical locations. In some examples, according to various aspects of the present disclosure, the communication manager 1415 or its subcomponents can be separate and distinct components. In some examples, according to various aspects of the present disclosure, the communication manager 1415 or its subcomponents can be combined with one or more other hardware components, including but not limited to input / output (I / O) components, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof.

[0307] The transmitter 1420 may transmit signals generated by other components of the device 1405. In some examples, the transmitter 1420 may be co-located with the receiver 1410 in a transceiver module. For example, the transmitter 1420 may be a reference Figure 17 Examples of aspects of the described transceiver 1720. The transmitter 1420 may utilize a single antenna or a collection of antennas.

[0308] Figure 15 A block diagram 1500 is shown of a device 1505 that supports decoding downlink control information in a combined PDCCH candidate in accordance with various aspects of the present disclosure. The device 1505 may be an example of aspects of the device 1405 or base station 105 as described herein. The device 1505 may include a receiver 1510, a communication manager 1515, and a transmitter 1535. The device 1505 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0309] Receiver 1510 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to decoding downlink control information in combined PDCCH candidates, etc.). The information may be passed to other components of device 1505. Receiver 1510 may be a reference Figure 17 Examples of aspects of the described transceiver 1720. The receiver 1510 may utilize a single antenna or a collection of antennas.

[0310] Communications manager 1515 may be an example of aspects of communications manager 1415 as described herein. Communications manager 1515 may include DCI interface 1520, combination candidate identifier 1525, and communications interface 1530. Communications manager 1515 may be an example of aspects of communications manager 1710 as described herein.

[0311] The DCI interface 1520 may transmit downlink control information to the UE, where the downlink control information corresponds to the first physical downlink control channel candidate, the second physical downlink control channel, or a combined physical downlink control channel candidate.

[0312] The combined candidate identifier 1525 may identify, based on the transmission, that the transmitted downlink control channel candidate corresponds to a combined physical downlink control channel candidate.

[0313] The communication interface 1530 may communicate with the UE based on identifying that the decoded downlink control information corresponds to a combined physical downlink control channel candidate.

[0314] The transmitter 1535 may transmit signals generated by other components of the device 1505. In some examples, the transmitter 1535 may be co-located with the receiver 1510 in a transceiver module. For example, the transmitter 1535 may be a reference Figure 17 Examples of aspects of the described transceiver 1720. The transmitter 1535 may utilize a single antenna or a collection of antennas.

[0315] Figure 16 A block diagram 1600 is shown of a communication manager 1605 that supports decoding downlink control information in a combined PDCCH candidate in accordance with aspects of the present disclosure. The communication manager 1605 may be an example of aspects of the communication manager 1415, the communication manager 1515, or the communication manager 1710 described herein. The communication manager 1605 may include a DCI interface 1610, a combined candidate identifier 1615, a communication interface 1620, a DCI encoder 1625, a PDSCH identifier 1630, a PDSCH interface 1635, a reference symbol identifier 1640, a reference slot identifier 1645, a PUSCH identifier 1650, a rate matching component 1655, a precoder component 1660, a TCI component 1665, a CORESET identifier 1670, a capability component 1675, a PUCCH identifier 1680, a PUCCH interface 1685, a CORESET pool index component 1690, and a HARQ codebook component 1695. Each of these modules may communicate directly or indirectly with each other (eg, via one or more buses).

[0316] The DCI interface 1610 may transmit downlink control information to the UE, where the downlink control information corresponds to the first physical downlink control channel candidate, the second physical downlink control channel candidate, or a combined physical downlink control channel candidate.

[0317] In some examples, the DCI interface 1610 may transmit downlink control information corresponding to a first physical downlink control channel candidate in a first search space set, a second physical downlink control channel candidate in a second search space set, or a combined physical downlink control channel candidate in the first search space set and the second search space set.

[0318] The combined candidate identifier 1615 may also identify, based on the transmission, that the transmitted downlink control channel candidate corresponds to a combined physical downlink control channel candidate.

[0319] The communication interface 1620 may communicate with the UE based on identifying that the decoded downlink control information corresponds to a combined physical downlink control channel candidate.

[0320] The DCI encoder 1625 may include an indication in the downlink control information that the transmitted physical downlink control channel corresponds to the combined physical downlink control channel candidate.

[0321] In some examples, the DCI encoder 1625 may scramble a cyclic redundancy check of the downlink control information using a radio network temporary identifier that indicates that the transmitted downlink control information corresponds to a combined physical downlink control channel candidate.

[0322] In some examples, the DCI encoder 1625 may scramble the downlink control information using at least a scrambling identifier that indicates that the transmitted physical downlink control channel candidate is a combined physical downlink control channel candidate.

[0323] In some examples, the DCI encoder 1625 may scramble the coded bits of the demodulation reference signal and the downlink control information using a scrambling identifier that indicates that the transmitted physical downlink control channel candidate is a combined physical downlink control channel candidate.

[0324] In some examples, the DCI encoder 1625 may transmit an identification of an offset slot number in the downlink control information, where the physical uplink shared channel is transmitted based on the reference slot and the offset slot number.

[0325] In some cases, the indication includes a bit indicating that the transmitted downlink control information corresponds to a combined physical downlink control channel candidate.

[0326] The PDSCH identifier 1630 may identify a starting position of a physical downlink shared channel corresponding to the transmitted physical downlink control channel candidate based on identifying that the transmitted physical downlink control channel candidate is a combined physical downlink control channel candidate.

[0327] In some examples, the PDSCH identifier 1630 may identify a starting position during or after a first symbol of a later search space set between the first search space set and the second search space set.

[0328] In some examples, the PDSCH identifier 1630 may identify the starting position during or after the first codeword of the earlier search space set in the first search space set and the second search space set, during or after the first codeword of the search space set with the smallest index in the first search space set or the second search space set, or during or after the first codeword of the control resource set with the smallest identifier in the first control resource set and the second control resource set.

[0329] In some examples, the PDSCH identifier 1630 may identify an offset slot number relative to a reference slot.

[0330] In some examples, the PDSCH identifier 1630 may transmit an identifier of an offset slot number in the downlink control information, where the physical downlink shared channel is transmitted based on the reference slot and the offset slot number.

[0331] In some examples, the PDSCH identifier 1630 may identify the starting position of the physical downlink shared channel based on a reference symbol.

[0332] In some examples, the PDSCH identifier 1630 may identify the starting position of the physical downlink shared channel based on a reference time slot.

[0333] The PDSCH interface 1635 may transmit the physical downlink shared channel according to the identified starting location.

[0334] In some examples, the PDSCH interface 1635 may transmit a received physical downlink shared channel based on the identified starting location.

[0335] The reference symbol identifier 1640 may identify a reference symbol for identifying a starting position of a physical downlink shared channel based on identifying that the transmitted downlink control information corresponds to a combined physical downlink control channel candidate.

[0336] In some examples, reference symbol identifier 1640 may identify a first symbol in the later of the first search space set and the second search space set.

[0337] In some examples, the reference codeword identifier 1640 may identify the first codeword in the earlier of the first search space set and the second search space set, the first codeword in the search space set with the smallest index in the first search space set or the second search space set, or the first codeword in the control resource set with the smallest identifier in the first control resource set and the second control resource set.

[0338] In some examples, the reference symbol identifier 1640 may identify a downlink control information format used for the transmitted downlink control information, wherein identifying the reference symbol is based on identifying the downlink control information format.

[0339] The reference time slot identifier 1645 may identify a reference time slot from the later time slot of the first search space set and the second search space set based on identifying that the transmitted downlink control signal corresponds to the combined physical downlink control channel candidate.

[0340] In some examples, the reference time slot identifier 1645 may identify a reference time slot from a later time slot of the first search space set and the second search space set based on identifying that the transmitted downlink control signal corresponds to a combined physical downlink control channel candidate.

[0341] The PUSCH identifier 1650 may identify the starting position of the physical uplink shared channel based on the reference time slot.

[0342] In some examples, the PUSCH identifier 1650 may identify an offset slot number relative to a reference slot.

[0343] The rate matching component 1655 can rate match the resources of the physical downlink shared channel scheduled by the downlink control information around the resources corresponding to the downlink control information in the first search space set and the second search space set based on identifying that the transmitted downlink control information corresponds to the combined physical downlink control channel candidate.

[0344] In some examples, rate matching component 1655 may rate match resources of a physical downlink shared channel with resources of one or more demodulation reference signals based on a precoder granularity.

[0345] In some cases, when the precoder granularity indicates contiguous resource blocks of a control resource set, the one or more demodulation reference signals correspond to resource element groups of the control resource set.

[0346] In some cases, when the precoder granularity does not indicate contiguous resource blocks of a control resource set, the one or more demodulation reference signals correspond to a group of resource elements that group physical downlink control channel candidates.

[0347] Precoder component 1660 can communicate a precoder granularity for a set of control resources associated with the first search space set or the second search space set.

[0348] The TCI component 1665 can transmit the downlink control information without a transmission configuration indicator status field indicating the transmission configuration indicator status of the physical downlink shared channel scheduled by the downlink control information; and the transmitted downlink control information does not include the transmission configuration indicator status.

[0349] In some examples, the TCI component 1665 may identify a transmission configuration indicator state, quasi-co-location, or both for a scheduled physical downlink shared channel based on the first control resource set or the second control resource set corresponding to the combined physical downlink shared channel candidate based on identifying that the first control resource set corresponds to the second control resource set.

[0350] In some examples, the TCI component 1665 may determine whether an offset between the transmitted downlink control information and the corresponding physical downlink shared channel is greater than or equal to a UE capability threshold corresponding to the UE capability, where a transmission configuration indicator state, quasi co-location, or both is identified based on determining that the offset is greater than the capability threshold.

[0351] In some examples, the TCI component 1665 may identify a transmission configuration indicator state, quasi co-location, or both for a scheduled physical downlink shared channel according to the first control resource set or the second control resource set based on identifying that the first control resource set is different from the second control resource set.

[0352] In some examples, the TCI component 1665 may identify a transmission configuration indicator state, quasi-co-location, or both for a scheduled physical downlink shared channel based on the first control resource set and the second control resource set based on identifying that the first control resource set is different from the second control resource set.

[0353] In some cases, the transmission configuration indicator state, quasi co-location, or both corresponds to a multi-state physical downlink shared channel based on the identification.

[0354] The CORESET identifier 1670 can identify whether the first control resource set corresponding to the first search space set is the same control resource set as the second control resource set corresponding to the second search space set based on identifying that the transmitted downlink control information corresponds to a combined physical downlink control channel candidate and transmitting the downlink control information without a transmission configuration indicator status field.

[0355] In some examples, the CORESET identifier 1670 may identify the transmission configuration indicator state, quasi-co-location, or both of the scheduled physical downlink shared channel according to the first control resource set or the second control resource set based on: the lower control resource set identifier of the first control resource set and the second control resource set, the higher control resource set identifier of the first control resource set and the second control resource set, the lower search space set identifier of the first search space set and the second search space set, the higher search space set identifier of the first search space set and the second search space set, the starting position of the first search space set and the second search space set, the ending position of the first search space set or the second search space set, or any combination thereof.

[0356] Capabilities component 1675 can receive an indication of UE capabilities from the UE.

[0357] The PUCCH identifier 1680 can identify the resources of the physical uplink control channel based on the number of control channel elements and the starting control channel element index from the first control resource set corresponding to the first search space set or from the second control resource set corresponding to the second search space set based on identifying that the transmitted downlink control information corresponds to a combined physical downlink control channel candidate.

[0358] In some examples, the PUCCH identifier 1680 may identify resources of the physical uplink control channel according to the number of control channel elements and the starting control channel element index from the first control resource set or the second control resource set based on: the lower control resource set identifier of the first control resource set and the second control resource set, the higher control resource set identifier of the first control resource set and the second control resource set, the lower search space set identifier of the first search space set and the second search space set, the higher search space set identifier of the first search space set and the second search space set, the starting position of the first search space set and the second search space set, the ending position of the first search space set or the second search space set, or any combination thereof.

[0359] In some examples, the PUCCH identifier 1680 may identify resources of the physical uplink control channel based on the number of control channel elements and the starting control channel element index from both a first control resource set corresponding to a first search space set and a second control resource set corresponding to a second search space set based on identifying that the transmitted downlink control information corresponds to a combined physical downlink control channel candidate.

[0360] The PUCCH interface 1685 may receive a physical uplink control channel according to the identifier.

[0361] The CORESET pool index component 1690 can identify that a first control resource set pool index for a first control resource set corresponding to a first search space set is different from a second control resource set pool index for a second control resource set corresponding to a second search space set based on identifying that the transmitted downlink control information corresponds to a combined physical downlink control channel candidate.

[0362] In some examples, the CORESET pool index component 1690 may identify a control resource set pool index value corresponding to: a lower control resource set identifier of the first control resource set and the second control resource set, a higher control resource set identifier of the first control resource set and the second control resource set, a lower search space set identifier of the first search space set and the second search space set, a higher search space set identifier of the first search space set and the second search space set, a starting position of the first search space set and the second search space set, an ending position of the first search space set or the second search space set, or any combination thereof, wherein the hybrid automatic repeat request acknowledgment codebook is identified based on the control resource set pool index value.

[0363] In some examples, the CORESET pool index component 1690 may identify a physical downlink scrambling sequence initialization value, a default beam for a physical downlink shared channel scheduled via transmitted downlink control information, an activated transmission configuration indicator state set, or any combination thereof based on the first control resource set pool index or the second control resource set pool index.

[0364] In some examples, the CORESET pool index component 1690 may identify a control resource set pool index value corresponding to: a lower control resource set identifier of the first control resource set and the second control resource set, a higher control resource set identifier of the first control resource set and the second control resource set, a lower search space set identifier of the first search space set and the second search space set, a higher search space set identifier of the first search space set and the second search space set, a starting position of the first search space set and the second search space set, an ending position of the first search space set or the second search space set, or any combination thereof, wherein a physical downlink scrambling sequence initialization value, a default beam for a physical downlink shared channel scheduled via transmitted downlink control information, an activated transmission configuration indicator state set, or any combination thereof is identified based on the control resource set pool index value.

[0365] The HARQ codebook component 1695 can identify the hybrid automatic repeat request acknowledgment codebook according to the first control resource pool index or the second control resource pool index based on identifying that the first control resource pool index and the second control resource pool index are different.

[0366] In some examples, the HARQ codebook component 1695 may identify fixed control resource pool index values ​​for the first control resource pool index and the second control resource pool index, wherein the hybrid automatic repeat request acknowledgment codebook is identified according to the fixed control resource pool index value.

[0367] In some examples, the HARQ codebook component 1695 may identify a hybrid automatic repeat request acknowledgment codebook according to the first control resource pool index and the second control resource pool index based on identifying that the first control resource pool index is different from the second control resource pool index.

[0368] Figure 17 A diagram of a system 1700 including a device 1705 that supports decoding downlink control information in a combined PDCCH candidate according to aspects of the present disclosure is shown. The device 1705 can be an example of, or include components of, the device 1405, device 1505, or base station 105 as described herein. The device 1705 may include components for two-way voice and data communications, including components for transmitting and receiving communications, including a communication manager 1710, a network communication manager 1715, a transceiver 1720, an antenna 1725, a memory 1730, a processor 1740, and an inter-station communication manager 1745. These components may be in electronic communication via one or more buses (e.g., bus 1750).

[0369] The communication manager 1710 may transmit downlink control information to the UE, where the downlink control information corresponds to a first physical downlink control channel candidate, a second physical downlink control channel candidate, or a combined physical downlink control channel candidate. The communication manager 1710 may identify, based on the transmission, that the transmitted downlink control channel candidate corresponds to the combined physical downlink control channel candidate. The communication manager 1710 may communicate with the UE based on identifying that the decoded downlink control information corresponds to the combined physical downlink control channel candidate.

[0370] The network communications manager 1715 may manage communications with the core network (eg, via one or more wired backhaul links). For example, the network communications manager 1715 may manage the delivery of data communications for client devices, such as one or more UEs 115.

[0371] The transceiver 1720 can communicate bidirectionally via one or more antennas, wired or wireless links, as described above. For example, the transceiver 1720 can represent a wireless transceiver and can communicate bidirectionally with another wireless transceiver. The transceiver 1720 can also include a modem to modulate packets and provide the modulated packets to the antenna for transmission, and demodulate packets received from the antenna.

[0372] In some cases, a wireless device may include a single antenna 1725. However, in some cases, the device may have more than one antenna 1725, which may be capable of transmitting or receiving multiple wireless transmissions concurrently.

[0373] Memory 1730 may include RAM, ROM, or a combination thereof. Memory 1730 may store computer-readable code 1735 including instructions that, when executed by a processor (e.g., processor 1740), cause the device to perform the various functions described herein. In some cases, memory 1730 may include, among other things, a BIOS that controls basic hardware or software operations, such as interaction with peripheral components or devices.

[0374] The processor 1740 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, the processor 1740 may be configured to operate a memory array using a memory controller. In some cases, the memory controller may be integrated into the processor 1740. The processor 1740 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 1730) to cause the device 1705 to perform various functions (e.g., a function or task of supporting decoding downlink control information in a combined PDCCH candidate).

[0375] The inter-site communication manager 1745 can manage communications with other base stations 105 and can include a controller or scheduler for controlling communications with the UE 115 in cooperation with the other base stations 105. For example, the inter-site communication manager 1745 can coordinate the scheduling of transmissions to the UE 115 for various interference mitigation techniques, such as beamforming or joint transmission. In some examples, the inter-site communication manager 1745 can provide an X2 interface within an LTE / LTE-A wireless communication network technology to provide communications between the base stations 105.

[0376] The code 1735 may include instructions for implementing various aspects of the present disclosure, including instructions for supporting wireless communications. The code 1735 may be stored in a non-transitory computer-readable medium, such as system memory or other types of memory. In some cases, the code 1735 may not be directly executed by the processor 1740, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein.

[0377] Figure 18A flow chart illustrating a method 1800 for supporting decoding of downlink control information in a combined PDCCH candidate according to aspects of the present disclosure is shown. The operations of the method 1800 may be implemented by a UE 115 or components thereof as described herein. For example, the operations of the method 1800 may be implemented by a UE 115 or components thereof as described herein. Figures 10 to 13 In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the following functions. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the following functions.

[0378] At 1805, the UE may receive downlink control information from the base station. The operations of 1805 may be performed according to the methods described herein. In some examples, aspects of the operations of 1805 may be performed as described with reference to Figures 10 to 13 The DCI interface described is performed.

[0379] At 1810, the UE may identify a first physical downlink control channel candidate, a second physical downlink control channel candidate, and a combined physical downlink control channel candidate. The operations of 1810 may be performed according to the methods described herein. In some examples, aspects of the operations of 1810 may be performed as described with reference to Figures 10 to 13 The described PDCCH candidate identifier is performed.

[0380] At 1815, the UE may decode downlink control information from at least one of the first physical downlink control channel candidate, the second physical downlink control channel candidate, and the combined physical downlink control channel candidate based on the identifier. The operations of 1815 may be performed according to the methods described herein. In some examples, aspects of the operations of 1815 may be performed as described with reference to Figures 10 to 13 The DCI decoder described is performed.

[0381] At 1820, the UE may identify that the decoded downlink control information corresponds to a combined physical downlink control channel candidate. The operations of 1820 may be performed according to the methods described herein. In some examples, aspects of the operations of 1820 may be as described with reference to Figures 10 to 13 The described combination of candidate identifiers is performed.

[0382] At 1825, the UE may communicate with the base station based on identifying that the decoded downlink control information corresponds to the combined physical downlink control channel candidate. The operations of 1825 may be performed according to the methods described herein. In some examples, aspects of the operations of 1825 may be performed as described with reference to Figures 10 to 13 The described communication interface is implemented.

[0383] Figure 19A flow chart illustrating a method 1900 for supporting decoding of downlink control information in a combined PDCCH candidate according to aspects of the present disclosure is shown. The operations of the method 1900 may be implemented by a base station 105 or components thereof as described herein. For example, the operations of the method 1900 may be implemented by a base station 105 or components thereof as described herein. Figures 14 to 17 In some examples, a base station may execute an instruction set to control functional elements of the base station to perform the functions described below. Additionally or alternatively, the base station may use dedicated hardware to perform various aspects of the functions described below.

[0384] At 1905, the base station may transmit downlink control information to the UE, wherein the downlink control information corresponds to a first physical downlink control channel candidate, a second physical downlink control channel candidate, or a combined physical downlink control channel candidate. The operations of 1905 may be performed according to the methods described herein. In some examples, aspects of the operations of 1905 may be performed as described with reference to Figures 14 to 17 The DCI interface described is performed.

[0385] At 1910, the base station may identify, based on the transmission, that the transmitted downlink control channel candidate corresponds to a combined physical downlink control channel candidate. The operations of 1910 may be performed according to the methods described herein. In some examples, aspects of the operations of 1910 may be as described with reference to Figures 14 to 17 The described combination of candidate identifiers is performed.

[0386] At 1915, the base station may communicate with the UE based on identifying that the decoded downlink control information corresponds to the combined physical downlink control channel candidate. The operations of 1915 may be performed according to the methods described herein. In some examples, aspects of the operations of 1915 may be performed as described with reference to Figures 14 to 17 The described communication interface is implemented.

[0387] It should be noted that the methods described herein describe possible implementations, and that the operations and steps may be rearranged or otherwise modified and other implementations are possible. Furthermore, aspects from two or more methods may be combined.

[0388] The following provides an overview of various aspects of the disclosure:

[0389] Aspect 1: A method for wireless communication at a UE, comprising: receiving downlink control information from a base station; identifying a first physical downlink control channel candidate in a first search space set, a second physical downlink control channel candidate in a second search space set, and a combined physical downlink control channel candidate in the first search space set and the second search space set; decoding the downlink control information from at least one of the first physical downlink control channel candidate, the second physical downlink control channel candidate, and the combined physical downlink control channel candidate based at least in part on the identification; identifying that the downlink control information corresponds to the combined physical downlink control channel candidate; and communicating with the base station based at least in part on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate.

[0390] Aspect 2: The method according to aspect 1 further comprises: identifying an indication in the downlink control information, the indication indicating that the downlink control information corresponds to the combined physical downlink control channel candidate.

[0391] Aspect 3: The method of aspect 2, wherein the indication comprises a bit indicating that the downlink control information corresponds to the combined physical downlink control channel candidate.

[0392] Aspect 4: A method as described in any one of Aspects 2 to 3, wherein identifying the indication in the downlink control information includes: descrambling the cyclic redundancy check of the downlink control information using a radio network temporary identifier indicating that the downlink control information corresponds to the combined physical downlink control channel candidate.

[0393] Aspect 5: The method as described in any one of aspects 1 to 4, wherein decoding the downlink control information includes: decoding the downlink control information using at least a scrambling identifier indicating that the downlink control information corresponds to the combined physical downlink control channel candidate.

[0394] Aspect 6: A method as described in Aspect 5, wherein using the scrambling identifier to decode the downlink control information includes: using the scrambling identifier indicating that the downlink control information corresponds to the combined physical downlink control channel candidate to descramble the demodulation reference signal and at least a portion of the downlink control information.

[0395] Aspect 7: The method as described in any one of Aspects 1 to 6 further includes: identifying the starting position of the physical downlink shared channel based at least in part on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate; and receiving the physical downlink shared channel based at least in part on the starting position.

[0396] Aspect 8: The method according to aspect 7, wherein identifying the start position comprises: identifying that the start position is during or after a first symbol of a later search space set between the first search space set and the second search space set.

[0397] Aspect 9: A method as described in any one of Aspects 7 to 8, wherein identifying the starting position includes: identifying that the starting position is during or after the first codeword of the earlier search space set in the first search space set and the second search space set, during or after the first codeword of the search space set with the smallest index in the first search space set or the second search space set, or during or after the first codeword of the control resource set with the smallest identifier in the first control resource set and the second control resource set.

[0398] Aspect 10: The method as described in any one of aspects 1 to 9 further includes: identifying a reference codeword for identifying a starting position of a physical downlink shared channel based at least in part on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate.

[0399] Aspect 11: The method of aspect 10, wherein identifying the reference symbol comprises identifying a first symbol in a later one of the first search space set and the second search space set.

[0400] Aspect 12: A method as described in any one of Aspects 10 to 11, wherein identifying the reference codeword includes: identifying the first codeword in the earlier one of the first search space set and the second search space set, the first codeword of the search space set with the smallest index in the first search space set or the second search space set, or the first codeword of the control resource set with the smallest identifier in the first control resource set and the second control resource set.

[0401] Aspect 13: The method of any one of aspects 10 to 12, further comprising: identifying a downlink control information format for the decoded downlink control information, wherein identifying the reference symbol is based at least in part on identifying the downlink control information format.

[0402] Aspect 14: The method as described in any one of Aspects 10 to 13 further includes: identifying the starting position of the physical downlink shared channel based at least in part on the reference codeword; and receiving the physical downlink shared channel based at least in part on the identified starting position.

[0403] Aspect 15: The method as described in any one of Aspects 1 to 14 further includes: identifying a reference time slot according to the later time slot of the first search space set and the second search space set based at least in part on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate; and identifying the starting position of the physical downlink shared channel based at least in part on the reference time slot.

[0404] Aspect 16: The method as described in Aspect 15, wherein identifying the starting position further includes: identifying a resource allocation field in the downlink control information, wherein the starting position of the physical downlink shared channel is identified using the value of the resource allocation field relative to the reference time slot.

[0405] Aspect 17: The method as described in any one of Aspects 1 to 16 further includes: identifying a reference codeword based on the last codeword of the later one of the first search space set and the second search space set; identifying the offset between the reference codeword and the physical downlink shared channel scheduled by the decoded downlink control information; comparing the offset with the UE capability threshold to determine whether to use the default setting or the setting indicated by the downlink control information to receive the physical downlink shared channel.

[0406] Aspect 18: The method of aspect 17, further comprising: determining to use a default setting to receive the physical downlink shared channel based at least in part on determining that the offset is less than a UE capability threshold according to the comparison.

[0407] Aspect 19: The method of aspect 17 further comprises: determining to use the setting indicated by the downlink control information based at least in part on determining that the offset is greater than a UE capability threshold according to the comparison.

[0408] Aspect 20: The method as described in any one of Aspects 1 to 19 further includes: identifying a reference time slot according to a later time slot of the first search space set and the second search space set based at least in part on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate; and identifying the starting position of the physical uplink shared channel based at least in part on the reference time slot.

[0409] Aspect 21: The method of Aspect 20, wherein identifying the starting position further comprises: identifying a resource allocation field included in the decoded downlink control information, wherein the starting position is identified based on a value of the resource allocation field relative to the reference time slot.

[0410] Aspect 22: The method as described in any one of Aspects 1 to 21 further includes: identifying a reference codeword based on the last codeword of the later search space set in the first search space set and the second search space set based at least in part on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate; and identifying that the scheduled physical uplink control channel starts several codewords after the reference codeword.

[0411] Aspect 23: The method of aspect 22, wherein the number of symbols is determined based at least in part on the capabilities of the UE.

[0412] Aspect 24: The method as described in any one of Aspects 1 to 23 further includes: identifying that the physical downlink shared channel scheduled by the downlink control information is rate matched around resources corresponding to the downlink control information in the first search space set and the second search space set based at least in part on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate.

[0413] Aspect 25: The method as described in Aspect 24 further includes: identifying the precoder granularity of the control resource set associated with the first search space set or the second search space set; and identifying that the physical downlink shared channel is further rate matched around one or more demodulation reference signals based at least in part on the precoder granularity.

[0414] Aspect 26: The method of aspect 25, wherein the one or more demodulation reference signals correspond to a resource element group of the control resource set when the precoder granularity indicates contiguous resource blocks of the control resource set.

[0415] Aspect 27: The method of aspect 25, wherein the one or more demodulation reference signals correspond to a group of resource elements of the combined physical downlink control channel candidate when the precoder granularity does not indicate contiguous resource blocks of the control resource set.

[0416] Aspect 28: The method as described in any one of Aspects 1 to 27 further includes: identifying that the downlink control information does not include a transmission configuration indicator status field indicating the transmission configuration indicator status of the physical downlink shared channel scheduled by the downlink control information; and identifying whether the first control resource set corresponding to the first search space set is the same control resource set as the second control resource set corresponding to the second search space set based at least in part on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate and identifying that the downlink control information does not include the transmission configuration indicator status field.

[0417] Aspect 29: The method as described in Aspect 28 further includes: identifying the transmission configuration indicator state, quasi-co-location, or both of the scheduled physical downlink shared channel according to the first control resource set or the second control resource set corresponding to the combined physical downlink control channel candidate based at least in part on identifying that the first control resource set corresponds to the second control resource set.

[0418] Aspect 30: The method as described in Aspect 29 further includes: determining whether the offset between the downlink control information and the corresponding physical downlink shared channel is greater than or equal to a UE capability threshold, wherein the transmission configuration indicator state, quasi-co-location, or both is identified at least in part based on determining that the offset is greater than the UE capability threshold.

[0419] Aspect 31: The method as described in Aspect 28 further includes: identifying the transmission configuration indicator state, quasi-co-location, or both of the scheduled physical downlink shared channel according to the first control resource set or the second control resource set based at least in part on identifying that the first control resource set is different from the second control resource set.

[0420] Aspect 32: The method as described in Aspect 31 further includes: identifying the transmission configuration indicator state, quasi-co-location, or both of the scheduled physical downlink shared channel according to the first control resource set or the second control resource set based at least in part on the following: the lower control resource set identifier of the first control resource set and the second control resource set, the higher control resource set identifier of the first control resource set and the second control resource set, the lower search space set identifier of the first search space set and the second search space set, the higher search space set identifier of the first search space set and the second search space set, the starting position of the first search space set and the second search space set, the ending position of the first search space set or the second search space set, or any combination thereof.

[0421] Aspect 33: The method as described in Aspect 28 further includes: identifying the transmission configuration indicator state, quasi-co-location, or both of the scheduled physical downlink shared channel according to the first control resource set and the second control resource set based at least in part on identifying that the first control resource set is different from the second control resource set.

[0422] Aspect 34: The method of aspect 33, wherein the transmission configuration indicator state, quasi co-location, or both corresponds to a multi-state physical downlink shared channel based at least in part on the identification.

[0423] Aspect 35: The method as described in any one of Aspects 1 to 34 further includes: identifying the resources of the physical uplink control channel at least in part based on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate, and at least in part based on the number of control channel elements and the starting control channel element index from the first control resource set corresponding to the first search space set or from the second control resource set corresponding to the second search space set.

[0424] Aspect 36: The method as described in Aspect 35 further includes: identifying the resources of the physical uplink control channel according to the number of control channel elements and the starting control channel element index from the first control resource set or the second control resource set based at least in part on the following: the lower control resource set identifier of the first control resource set and the second control resource set, the higher control resource set identifier of the first control resource set and the second control resource set, the lower search space set identifier of the first search space set and the second search space set, the higher search space set identifier of the first search space set and the second search space set, the starting position of the first search space set and the second search space set, the ending position of the first search space set or the second search space set, or any combination thereof.

[0425] Aspect 37: The method as described in any one of Aspects 1 to 36 further includes: identifying the resources of the physical uplink control channel at least in part based on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate, and at least in part based on the number of control channel elements and the starting control channel element index from both the first control resource set corresponding to the first search space set and the second control resource set corresponding to the second search space set.

[0426] Aspect 38: The method as described in any one of Aspects 1 to 37 further includes: identifying that the first control resource set pool index of the first control resource set corresponding to the first search space set is different from the second control resource set pool index of the second control resource set corresponding to the second search space set based at least in part on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate.

[0427] Aspect 39: The method of aspect 38 further comprises: identifying a hybrid automatic repeat request acknowledgment codebook based at least in part on identifying that the first control resource pool index is different from the second control resource pool index, and at least in part on the first control resource pool index or the second control resource pool index.

[0428] Aspect 40: The method as described in Aspect 39 further includes: identifying a fixed control resource pool index value of the first control resource pool index and the second control resource pool index, wherein the hybrid automatic repeat request acknowledgment codebook is identified according to the fixed control resource pool index value.

[0429] Aspect 41: The method as described in any one of Aspects 39 to 40 further includes: identifying a control resource set pool index value corresponding to the following items: a fixed control resource set pool index value, a lower control resource set identifier of the first control resource set and the second control resource set, a higher control resource set identifier of the first control resource set and the second control resource set, a lower search space set identifier of the first search space set and the second search space set, a higher search space set identifier of the first search space set and the second search space set, a starting position of the first search space set and the second search space set, an ending position of the first search space set or the second search space set, or any combination thereof, wherein the hybrid automatic repeat request acknowledgment codebook is identified according to the control resource set pool index value.

[0430] Aspect 42: The method of any one of Aspects 38 to 41, further comprising: identifying a hybrid automatic repeat request acknowledgment codebook based at least in part on identifying that the first control resource pool index is different from the second control resource pool index, and at least in part on the first control resource pool index and the second control resource pool index.

[0431] Aspect 43: The method as described in any one of Aspects 38 to 42 further includes: identifying a physical downlink scrambling sequence initialization value, a default beam for a physical downlink shared channel scheduled via decoded downlink control information, an activated transmission configuration indicator state set, or any combination thereof, at least in part based on the first control resource set pool index or the second control resource set pool index.

[0432] Aspect 44: The method as described in Aspect 43 further includes: identifying a control resource set pool index value corresponding to the following items: the lower control resource set identifier of the first control resource set and the second control resource set, the higher control resource set identifier of the first control resource set and the second control resource set, the lower search space set identifier of the first search space set and the second search space set, the higher search space set identifier of the first search space set and the second search space set, the starting position of the first search space set and the second search space set, the ending position of the first search space set or the second search space set, or any combination thereof, wherein the physical downlink scrambling sequence initialization value, the default beam for the physical downlink shared channel scheduled via the decoded downlink control information, the activated transmission configuration indicator state set, or any combination thereof is identified at least in part based on the control resource set pool index value.

[0433] Aspect 45: The method of aspect 44, wherein the default setting and the setting indicated by the downlink control information correspond to respective receive beams for receiving the physical downlink shared channel.

[0434] Aspect 46: A method for wireless communication at a base station, comprising: transmitting downlink control information to a UE, wherein the downlink control information corresponds to a first physical downlink control channel candidate in a first search space set, a second physical downlink control channel candidate in a second search space set, or a combined physical downlink control channel candidate in the first search space set and the second search space set; identifying that the transmitted downlink control channel candidate corresponds to the combined physical downlink control channel candidate based at least in part on the transmission; and communicating with the UE based at least in part on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate.

[0435] Aspect 47: The method of aspect 46 further comprising: including an indication in the downlink control information that the transmitted physical downlink control channel corresponds to the combined physical downlink control channel candidate.

[0436] Aspect 48: The method of aspect 47, wherein the indication comprises a bit indicating that the transmitted downlink control information corresponds to the combined physical downlink control channel candidate.

[0437] Aspect 49: A method as described in any one of Aspects 47 to 48, wherein the indication includes: scrambling a cyclic redundancy check of the downlink control information using a radio network temporary identifier indicating that the transmitted downlink control information corresponds to the combined physical downlink control channel candidate.

[0438] Aspect 50: The method of any one of aspects 46 to 49, further comprising: scrambling the downlink control information using at least a scrambling identifier indicating that the transmitted physical downlink control channel candidate is the combined physical downlink control channel candidate.

[0439] Aspect 51: The method of Aspect 50, wherein scrambling the downlink control information further comprises scrambling the demodulation reference signal and at least a portion of the downlink control information using the scrambling identifier indicating that the transmitted physical downlink control channel candidate is the combined physical downlink control channel candidate.

[0440] Aspect 52: The method as described in any one of Aspects 46 to 51 further includes: identifying the starting position of the physical downlink shared channel corresponding to the transmitted physical downlink control channel candidate based at least in part on identifying that the transmitted physical downlink control channel candidate is the combined physical downlink control channel candidate; and transmitting the physical downlink shared channel according to the identified starting position.

[0441] Aspect 53: The method of aspect 52, wherein identifying the start position comprises identifying that the start position is during or after a first symbol of a later search space set between the first search space set and the second search space set.

[0442] Aspect 54: The method as described in Aspect 52 further includes: identifying that the starting position is during or after the first codeword of the earlier search space set in the first search space set and the second search space set, during or after the first codeword of the search space set with the smallest index in the first search space set or the second search space set, or during or after the first codeword of the control resource set with the smallest identifier in the first control resource set and the second control resource set.

[0443] Aspect 55: The method as described in Aspect 54 further includes: identifying the offset time slot number relative to the reference time slot; and transmitting the identification of the offset time slot number in the downlink control information, wherein the physical downlink shared channel is transmitted at least in part based on the reference time slot and the offset time slot number.

[0444] Aspect 56: The method of any one of Aspects 46 to 55, further comprising: identifying a reference symbol for identifying a starting position of a physical downlink shared channel based at least in part on identifying that the transmitted downlink control information corresponds to the combined physical downlink control channel candidate.

[0445] Aspect 57: The method of aspect 56, further comprising: identifying a first symbol in the later one of the first search space set and the second search space set.

[0446] Aspect 58: The method as described in Aspect 56 further includes: identifying the first codeword in the earlier one of the first search space set and the second search space set, the first codeword of the search space set with the smallest index in the first search space set or the second search space set, or the first codeword of the control resource set with the smallest identifier in the first control resource set and the second control resource set.

[0447] Aspect 59: The method of any one of aspects 56 to 58, further comprising: identifying a downlink control information format for the transmitted downlink control information, wherein identifying the reference symbol is based at least in part on identifying the downlink control information format.

[0448] Aspect 60: The method as described in any one of Aspects 56 to 59 further includes: identifying a starting position of the physical downlink shared channel based at least in part on the reference codeword; and transmitting the physical downlink shared channel based at least in part on the identified starting position.

[0449] Aspect 61: The method as described in any one of Aspects 46 to 60 further includes: identifying a reference time slot according to the later time slot of the first search space set and the second search space set based at least in part on identifying that the transmitted downlink control information corresponds to the combined physical downlink control channel candidate; identifying the starting position of the physical downlink shared channel based at least in part on the reference time slot, wherein the transmitted downlink control information uses the value of the resource allocation field included in the downlink control information to indicate the starting position.

[0450] Aspect 62: The method as described in any one of Aspects 46 to 61 further includes: identifying a reference time slot according to a later time slot of the first search space set and the second search space set based at least in part on identifying that the transmitted downlink control information corresponds to the combined physical downlink control channel candidate; and identifying a starting position of the physical uplink shared channel based at least in part on the reference time slot, wherein the transmitted downlink control information uses the value of a resource allocation field included in the downlink control information to indicate the starting position.

[0451] Aspect 63: The method according to aspect 62, further comprising: identifying a time slot number relative to the reference time slot, wherein the value of the resource allocation field indicates the time slot number.

[0452] Aspect 64: The method as described in any one of Aspects 46 to 63 further includes: rate matching the resources of the physical downlink shared channel scheduled by the downlink control information around the resources corresponding to the downlink control information in the first search space set and the second search space set based at least in part on identifying that the transmitted downlink control information corresponds to the combined physical downlink control channel candidate.

[0453] Aspect 65: The method as described in any one of Aspects 46 to 64 further includes: transmitting a precoder granularity of a control resource set associated with the first search space set or the second search space set; and rate matching the resources of the physical downlink shared channel with the resources of one or more demodulation reference signals based at least in part on the precoder granularity.

[0454] Aspect 66: The method of aspect 65, wherein the one or more demodulation reference signals correspond to a resource element group of the control resource set when the precoder granularity indicates contiguous resource blocks of the control resource set.

[0455] Aspect 67: The method of aspect 65, wherein the one or more demodulation reference signals correspond to a group of resource elements of the combined physical downlink control channel candidate when the precoder granularity does not indicate contiguous resource blocks of the control resource set.

[0456] Aspect 68: The method as described in any one of Aspects 46 to 67 further includes: transmitting the downlink control information without a transmission configuration indicator status field indicating the transmission configuration indicator status of the physical downlink shared channel scheduled by the downlink control information; and the transmitted downlink control information does not include the transmission configuration indicator status; identifying whether the first control resource set corresponding to the first search space set is the same control resource set as the second control resource set corresponding to the second search space set based at least in part on identifying that the transmitted downlink control information corresponds to the combined physical downlink control channel candidate; and transmitting the downlink control information without the transmission configuration indicator status field.

[0457] Aspect 69: The method as described in Aspect 68 further includes: identifying the transmission configuration indicator state, quasi-co-location, or both of the scheduled physical downlink shared channel according to the first control resource set or the second control resource set corresponding to the combined physical downlink control channel candidate based at least in part on identifying that the first control resource set corresponds to the second control resource set.

[0458] Aspect 70: The method as described in Aspect 69 further includes: receiving an indication of the UE capability from the UE; and determining whether the offset between the transmitted downlink control information and the corresponding physical downlink shared channel is greater than or equal to a UE capability threshold corresponding to the UE capability, wherein the transmission configuration indicator state, quasi-co-location, or both is identified at least in part based on determining that the offset is greater than the UE capability threshold.

[0459] Aspect 71: The method as described in Aspect 68 further includes: identifying the transmission configuration indicator state, quasi-co-location, or both of the scheduled physical downlink shared channel according to the first control resource set or the second control resource set based at least in part on identifying that the first control resource set is different from the second control resource set.

[0460] Aspect 72: The method as described in Aspect 71 further includes: identifying the transmission configuration indicator state, quasi-co-location, or both of the scheduled physical downlink shared channel according to the first control resource set or the second control resource set based at least in part on the following: the lower control resource set identifier of the first control resource set and the second control resource set, the higher control resource set identifier of the first control resource set and the second control resource set, the lower search space set identifier of the first search space set and the second search space set, the higher search space set identifier of the first search space set and the second search space set, the starting position of the first search space set and the second search space set, the ending position of the first search space set or the second search space set, or any combination thereof.

[0461] Aspect 73: The method as described in Aspect 68 further includes: identifying the transmission configuration indicator state, quasi-co-location, or both of the scheduled physical downlink shared channel according to the first control resource set and the second control resource set based at least in part on identifying that the first control resource set is different from the second control resource set.

[0462] Aspect 74: The method of aspect 73, wherein the transmission configuration indicator state, quasi co-location, or both corresponds to a multi-state physical downlink shared channel based at least in part on the identification.

[0463] Aspect 75: The method as described in any one of Aspects 46 to 74 further includes: identifying the resources of the physical uplink control channel at least in part based on identifying that the transmitted downlink control information corresponds to the combined physical downlink control channel candidate, and at least in part based on the number of control channel elements and the starting control channel element index from the first control resource set corresponding to the first search space set or from the second control resource set corresponding to the second search space set.

[0464] Aspect 76: The method as described in Aspect 75 further includes: identifying the resources of the physical uplink control channel according to the number of control channel elements and the starting control channel element index from the first control resource set or the second control resource set based at least in part on the following: the lower control resource set identifier of the first control resource set and the second control resource set, the higher control resource set identifier of the first control resource set and the second control resource set, the lower search space set identifier of the first search space set and the second search space set, the higher search space set identifier of the first search space set and the second search space set, the starting position of the first search space set and the second search space set, the ending position of the first search space set or the second search space set, or any combination thereof.

[0465] Aspect 77: The method as described in any one of Aspects 75 to 76 further includes: receiving the physical uplink control channel according to the identifier.

[0466] Aspect 78: The method as described in any one of Aspects 46 to 77 further includes: identifying the resources of the physical uplink control channel at least in part based on identifying that the transmitted downlink control information corresponds to the combined physical downlink control channel candidate, and at least in part based on the number of control channel elements and the starting control channel element index from both the first control resource set corresponding to the first search space set and the second control resource set corresponding to the second search space set.

[0467] Aspect 79: The method as described in Aspect 78 further includes: receiving the physical uplink control channel according to the identifier.

[0468] Aspect 80: The method as described in any one of Aspects 46 to 79 further includes: identifying that the first control resource set pool index of the first control resource set corresponding to the first search space set is different from the second control resource set pool index of the second control resource set corresponding to the second search space set based at least in part on identifying that the transmitted downlink control information corresponds to the combined physical downlink control channel candidate.

[0469] Aspect 81: The method of aspect 80 further comprises: identifying a hybrid automatic repeat request acknowledgment codebook based at least in part on identifying that the first control resource pool index is different from the second control resource pool index, and at least in part on the first control resource pool index or the second control resource pool index.

[0470] Aspect 82: The method as described in Aspect 81 further includes: identifying a fixed control resource pool index value of the first control resource pool index and the second control resource pool index, wherein the hybrid automatic repeat request acknowledgment codebook is identified according to the fixed control resource pool index value.

[0471] Aspect 83: The method as described in Aspect 81 further includes: identifying a control resource set pool index value corresponding to the following items: the lower control resource set identifier of the first control resource set and the second control resource set, the higher control resource set identifier of the first control resource set and the second control resource set, the lower search space set identifier of the first search space set and the second search space set, the higher search space set identifier of the first search space set and the second search space set, the starting position of the first search space set and the second search space set, the ending position of the first search space set or the second search space set, or any combination thereof, wherein the hybrid automatic repeat request acknowledgment codebook is identified according to the control resource set pool index value.

[0472] Aspect 84: The method of aspect 80 further comprises: identifying a hybrid automatic repeat request acknowledgment codebook based at least in part on identifying that the first control resource pool index is different from the second control resource pool index, and at least in part on the first control resource pool index and the second control resource pool index.

[0473] Aspect 85: The method as described in any one of Aspects 80 to 84 further includes: identifying a physical downlink scrambling sequence initialization value, a default beam for a physical downlink shared channel scheduled via the transmitted downlink control information, an activated transmission configuration indicator state set, or any combination thereof, at least in part based on the first control resource set pool index or the second control resource set pool index.

[0474] Aspect 86: The method as described in Aspect 85 further includes: identifying a control resource set pool index value corresponding to the following items: the lower control resource set identifier of the first control resource set and the second control resource set, the higher control resource set identifier of the first control resource set and the second control resource set, the lower search space set identifier of the first search space set and the second search space set, the higher search space set identifier of the first search space set and the second search space set, the starting position of the first search space set and the second search space set, the ending position of the first search space set or the second search space set, or any combination thereof, wherein the physical downlink scrambling sequence initialization value, the default beam of the physical downlink shared channel for scheduling via the transmitted downlink control information, the activated transmission configuration indicator state set, or any combination thereof is identified based on the control resource set pool index value.

[0475] Aspect 87: A method for wireless communication at a UE, comprising: receiving downlink control information from a base station; identifying a first physical downlink control channel candidate, a second physical downlink control channel candidate, and a combined physical downlink control channel candidate; decoding the downlink control information from at least one of the first physical downlink control channel candidate, the second physical downlink control channel candidate, and the combined physical downlink control channel candidate based at least in part on the identification; identifying that the downlink control information corresponds to the combined physical downlink control channel candidate; and communicating with the base station based at least in part on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate.

[0476] Aspect 88: The method of aspect 87 further comprises: identifying an indication in the downlink control information, the indication indicating that the downlink control information corresponds to the combined physical downlink control channel candidate.

[0477] Aspect 89: The method of aspect 88, wherein identifying the indication in the downlink control information comprises descrambling a cyclic redundancy check of the downlink control information using a radio network temporary identifier indicating that the downlink control information corresponds to a combined physical downlink control channel candidate.

[0478] Aspect 90: A method as described in any one of Aspects 87 to 89, wherein decoding the downlink control information includes: decoding the downlink control information using at least a scrambling identifier indicating that the downlink control information corresponds to the combined physical downlink control channel candidate, wherein the decoding includes descrambling the demodulation reference signal and the decoded bits of the downlink control information using the scrambling identifier indicating that the downlink control information corresponds to the combined physical downlink control channel candidate.

[0479] Aspect 91: A method as described in any one of Aspects 87 to 90, wherein identifying that the downlink control information corresponds to the combination of physical downlink control channel candidates includes: identifying that the downlink control information corresponds to the combination of physical downlink control channel candidates based at least in part on a configuration indicating that a first physical downlink control channel candidate is associated with a second physical downlink control channel candidate.

[0480] Aspect 92: A method as described in any one of Aspects 87 to 91, wherein identifying the first physical downlink control channel candidate, the second physical downlink control channel candidate, and the combined physical downlink control channel candidate includes: identifying the first physical downlink control channel candidate in the first search space set, the second physical downlink control channel candidate in the second search space set, and the combined physical downlink control channel candidate in the first search space set and the second search space set.

[0481] Aspect 93: The method as described in Aspect 92 further includes: identifying the starting position of the physical downlink shared channel based at least in part on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate, wherein the starting position is identified as being during or after the first code element of the later search space set of the first search space set and the second search space set, during or after the first code element of the earlier search space set of the first search space set and the second search space set, during or after the first code element of the search space set with the smallest index in the first search space set or the second search space set, or during or after the first code element of the control resource set with the smallest identifier in the first control resource set and the second control resource set; and receiving the physical downlink shared channel based at least in part on the starting position.

[0482] Aspect 94: The method as described in any one of Aspects 92 to 93 further includes: identifying a reference codeword for identifying the starting position of a physical downlink shared channel based at least in part on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate; identifying the starting position of the physical downlink shared channel based at least in part on the reference codeword; and receiving the physical downlink shared channel based at least in part on the identified starting position.

[0483] Aspect 95: A method as described in Aspect 94, wherein identifying the reference codeword includes: identifying the first codeword in the later one of the first search space set and the second search space set, the first codeword in the earlier one of the first search space set and the second search space set, the first codeword in the search space set with the smallest index in the first search space set or the second search space set, or the first codeword in the control resource set with the smallest identifier in the first control resource set and the second control resource set.

[0484] Aspect 96: The method of any one of Aspects 94 to 95, further comprising: identifying a downlink control information format for the decoded downlink control information, wherein identifying the reference symbol is based at least in part on identifying the downlink control information format.

[0485] Aspect 97: The method as described in any one of Aspects 92 to 96 further includes: identifying a reference time slot according to the later time slot of the first search space set and the second search space set based at least in part on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate; identifying a starting position of a physical downlink shared channel based at least in part on the reference time slot and a resource allocation field in the downlink control information, wherein the starting position of the physical downlink shared channel is identified using the value of the resource allocation field relative to the reference time slot; and receiving the physical downlink shared channel based at least in part on the identified starting position.

[0486] Aspect 98: The method as described in any one of Aspects 92 to 97 further includes: identifying a reference codeword based on the last codeword of the later one of the first search space set and the second search space set; identifying the offset between the reference codeword and the physical downlink shared channel scheduled by the decoded downlink control information; comparing the offset with the UE capability threshold to determine whether to use the default setting or the setting indicated by the downlink control information to receive the physical downlink shared channel, wherein the default setting and the setting indicated by the downlink control information correspond to corresponding receive beams for receiving the physical downlink shared channel.

[0487] Aspect 99: The method as described in Aspect 98 further includes: determining to use the default setting to receive the physical downlink shared channel based on the comparison at least in part based on determining that the offset is less than the UE capability threshold, or determining to use the setting indicated by the downlink control information based on the comparison at least in part based on determining that the offset is greater than the UE capability threshold.

[0488] Aspect 100: The method as described in any one of Aspects 92 to 99 further includes: identifying a reference time slot based on the later time slot of the first search space set and the second search space set at least in part based on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate; identifying a starting position of a physical uplink shared channel based at least in part based on the reference time slot and a resource allocation field included in the decoded downlink control information, wherein the starting position is identified relative to the reference time slot based on the value of the resource allocation field; and transmitting the physical uplink shared channel based at least in part on identifying the starting position.

[0489] Aspect 101: The method as described in any of Aspects 92 to 100 further includes: identifying a reference codeword based on the last codeword of the later search space set in the first search space set and the second search space set based at least in part on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate; and identifying that the scheduled physical uplink control channel starts during or after a number of codewords after the reference codeword, and the number of codewords is at least in part based on the capability of the UE.

[0490] Aspect 102: The method as described in any one of Aspects 92 to 101 further includes: identifying that the downlink control information does not include a transmission configuration indicator status field indicating the transmission configuration indicator status of the physical downlink shared channel scheduled by the downlink control information; and identifying whether the first control resource set corresponding to the first search space set is the same control resource set as the second control resource set corresponding to the second search space set based at least in part on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate and identifying that the downlink control information does not include the transmission configuration indicator status field.

[0491] Aspect 103: The method as described in Aspect 102 further includes: identifying the transmission configuration indicator state, quasi-co-location, or both of the scheduled physical downlink shared channel according to the first control resource set or the second control resource set corresponding to the combined physical downlink control channel candidate based at least in part on identifying that the first control resource set corresponds to the second control resource set; and determining whether the offset between the downlink control information and the corresponding physical downlink shared channel is greater than or equal to a UE capability threshold, wherein the transmission configuration indicator state, quasi-co-location, or both is identified at least in part based on determining that the offset is greater than the UE capability threshold.

[0492] Aspect 104: The method as described in Aspect 103 further includes: identifying the transmission configuration indicator state, quasi-co-location, or both of the scheduled physical downlink shared channel according to the first control resource set or the second control resource set, at least in part based on the first control resource set being different from the second control resource set, at least in part based on the following items: the lower control resource set identifier of the first control resource set and the second control resource set, the higher control resource set identifier of the first control resource set and the second control resource set, the lower search space set identifier of the first search space set and the second search space set, the higher search space set identifier of the first search space set and the second search space set, the starting position of the first search space set and the second search space set, the ending position of the first search space set or the second search space set, or any combination thereof.

[0493] Aspect 105: The method as described in Aspect 103 further includes: identifying the transmission configuration indicator state, quasi-co-location, or both of the scheduled physical downlink shared channel according to the first control resource set and the second control resource set based at least in part on identifying that the first control resource set is different from the second control resource set, wherein the transmission configuration indicator state, quasi-co-location, or both corresponds to a multi-beam or multi-transmission configuration indicator state physical downlink shared channel based at least in part on the identification.

[0494] Aspect 106: The method as described in any one of Aspects 92 to 105 further includes: identifying the downlink control information corresponding to the combined physical downlink control channel candidate for scheduling a physical downlink shared channel; and identifying the resources of the physical uplink control channel for hybrid automatic repeat request transmission of the physical uplink shared channel based at least in part on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate, and at least in part on the number of control channel elements and the starting control channel element index from the first control resource set corresponding to the first search space set or from the second control resource set corresponding to the second search space set.

[0495] Aspect 107: A method as described in Aspect 106, wherein the resources are further identified at least in part based on the following items, at least in part based on the number of control channel elements and the starting control channel element index from the first control resource set or the second control resource set: a lower control resource set identifier of the first control resource set and the second control resource set, a higher control resource set identifier of the first control resource set and the second control resource set, a lower search space set identifier of the first search space set and the second search space set, a higher search space set identifier of the first search space set and the second search space set, a starting position of the first search space set and the second search space set, an ending position of the first search space set or the second search space set, or any combination thereof.

[0496] Aspect 108: The method as described in any one of Aspects 92 to 107 further includes: identifying resources of the physical uplink control channel based at least in part on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate, and at least in part on the number of control channel elements and the starting control channel element index from both the first control resource set corresponding to the first search space set and the second control resource set corresponding to the second search space set.

[0497] Aspect 109: The method as described in any one of Aspects 92 to 108 further includes: identifying that the first control resource set pool index of the first control resource set corresponding to the first search space set is different from the second control resource set pool index of the second control resource set corresponding to the second search space set based at least in part on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate.

[0498] Aspect 110: The method as described in Aspect 109 further includes: identifying the downlink control information scheduling physical downlink shared channel corresponding to the combined physical downlink control channel candidate; at least partially based on identifying that the first control resource pool index is different from the second control resource pool index, and identifying the hybrid automatic repeat request acknowledgment codebook for the scheduled physical downlink control channel candidate based at least partially on the first control resource pool index and the second control resource pool index.

[0499] Aspect 111: The method as described in Aspect 110 further includes: identifying a fixed control resource pool index value of the first control resource pool index and the second control resource pool index, wherein the hybrid automatic repeat request confirmation codebook is identified according to the fixed control resource pool index value.

[0500] Aspect 112: The method as described in any one of Aspects 110 to 111 further includes: identifying a control resource set pool index value corresponding to the following items: a lower control resource set identifier of the first control resource set and the second control resource set, a higher control resource set identifier of the first control resource set and the second control resource set, a lower search space set identifier of the first search space set and the second search space set, a higher search space set identifier of the first search space set and the second search space set, a starting position of the first search space set and the second search space set, an ending position of the first search space set or the second search space set, or any combination thereof, wherein the hybrid automatic repeat request acknowledgment codebook is identified according to the control resource set pool index value.

[0501] Aspect 113: The method as described in any one of Aspects 109 to 112 further includes: identifying the downlink control information scheduling physical downlink shared channel corresponding to the combined physical downlink control channel candidate; identifying a hybrid automatic repeat request confirmation codebook for the scheduled physical downlink control channel candidate based at least in part on identifying that the first control resource pool index is different from the second control resource pool index, and at least in part on the first control resource pool index and the second control resource pool index; and using the same value to transmit the hybrid automatic repeat request confirmation codebook for the scheduled physical downlink control channel candidate based at least in part on identifying the hybrid automatic repeat request confirmation codebook that is at least in part based on the first control resource pool index and the second control resource pool index.

[0502] Aspect 114: The method as described in any one of Aspects 109 to 113 further includes: identifying a physical downlink scrambling sequence initialization value, a default beam for a physical downlink shared channel scheduled via decoded downlink control information, an activated transmission configuration indicator state set, or any combination thereof, at least in part based on the first control resource set pool index or the second control resource set pool index.

[0503] Aspect 115: The method as described in any one of Aspects 87 to 114 further includes: identifying that the physical downlink shared channel scheduled by the downlink control information is rate matched around resources corresponding to the downlink control information in the first physical downlink control channel candidate and the second physical downlink control channel candidate based at least in part on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate.

[0504] Aspect 116: The method as described in Aspect 115 further includes: identifying a precoder granularity of a control resource set associated with the first physical downlink control channel candidate and the second physical downlink control channel candidate; and identifying that the physical downlink shared channel is further rate matched around one or more demodulation reference signals based at least in part on the precoder granularity, wherein the one or more demodulation reference signals correspond to a resource element group of the control resource set when the precoder granularity indicates contiguous resource blocks of the control resource set, and wherein the one or more demodulation reference signals correspond to a resource element group of the combined physical downlink control channel candidates when the precoder granularity does not indicate contiguous resource blocks of the control resource set.

[0505] Aspect 117: An apparatus for wireless communication at a UE, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method as described in any one of Aspects 1 to 44.

[0506] Aspect 118: An apparatus for wireless communication at a UE, comprising at least one means for performing the method of any one of aspects 1 to 44.

[0507] Aspect 119: A non-transitory computer-readable medium storing code for wireless communication at a UE, the code comprising instructions executable by a processor to perform the method of any one of aspects 1 to 44.

[0508] Aspect 120: An apparatus comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method of any one of aspects 45 to 45.

[0509] Aspect 121: An apparatus comprising at least one means for performing the method of any one of aspects 45 to 45.

[0510] Aspect 122: A non-transitory computer-readable medium storing code comprising instructions executable by a processor to perform the method of any of Aspects 45 to 45.

[0511] Aspect 123: An apparatus for wireless communication at a base station, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method as described in any one of Aspects 46 to 86.

[0512] Aspect 124: An apparatus for wireless communication at a base station, comprising at least one means for performing the method of any one of Aspects 46 to 86.

[0513] Aspect 125: A non-transitory computer-readable medium storing code for wireless communication at a base station, the code comprising instructions executable by a processor to perform the method of any one of aspects 46 to 86.

[0514] Aspect 126: An apparatus for wireless communication at a UE, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method as described in any one of Aspects 87 to 116.

[0515] Aspect 127: An apparatus for wireless communication at a UE, comprising at least one means for performing the method of any one of aspects 87 to 116.

[0516] Aspect 128: A non-transitory computer-readable medium storing code for wireless communication at a UE, the code comprising instructions executable by a processor to perform the method of any one of aspects 87 to 116.

[0517] Although aspects of LTE, LTE-A, LTE-A Pro, or NR systems may be described for example purposes, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used throughout much of the description, the techniques described herein may also be applicable to networks other than LTE, LTE-A, LTE-A Pro, or NR networks. For example, the techniques described may be applicable to various other wireless communication systems, such as Ultra Mobile Broadband (UMB), Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, and other systems and radio technologies not explicitly mentioned herein.

[0518] The information and signals described herein may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referred to throughout this description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0519] The various illustrative blocks and components described in conjunction with the disclosure herein may be implemented or performed with a general purpose processor, a DSP, an ASIC, a CPU, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration).

[0520] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored on or transmitted by a computer-readable medium as one or more instructions or code. Other examples and implementations fall within the scope of this disclosure and the appended claims. For example, due to the nature of software, the functions described herein may be implemented using software executed by a processor, hardware, firmware, hardwiring, or any combination thereof. Features that implement the functions may also be physically located in various locations, including being distributed so that parts of the functions are implemented at different physical locations.

[0521] Computer-readable media include both non-transient computer storage media and communication media, including any media that facilitates the transfer of a computer program from one place to another. Non-transient storage media can be any available medium that can be accessed by a general or special-purpose computer. As an example and not limitation, non-transient computer-readable media may include random access memory (RAM), read-only memory (ROM), electrically erasable programmable ROM (EEPROM), flash memory, compact disc (CD) ROM or other optical disc storage, magnetic disk storage or other magnetic storage device, or any other non-transient medium that can be used to carry or store the desired program code means in the form of instructions or data structures and can be accessed by a general or special-purpose computer, or a general or special-purpose processor. Similarly, any connection is also properly referred to as a computer-readable medium. For example, if software is transmitted from a website, server or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwaves, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwaves are included in the definition of computer-readable media. Disk and disc, as used herein, include CDs, laser discs, optical discs, digital versatile discs (DVDs), floppy disks, and Blu-ray discs, where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above are also included within the scope of computer-readable media.

[0522] As used herein (including in the claims), "or" used in a list of items (e.g., a list of items followed by a phrase such as "at least one of" or "one or more of") indicates an inclusive list, so that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C). Likewise, as used herein, the phrase "based on" should not be read as referencing a closed set of conditions. For example, an example step described as "based on condition A" could be based on both condition A and condition B without departing from the scope of this disclosure. In other words, as used herein, the phrase "based on" should be read in the same manner as the phrase "based at least in part on."

[0523] In the accompanying drawings, similar components or features may have the same reference number. In addition, components of the same type may be distinguished by following the reference number with a dash and a second reference number that distinguishes between the similar components. If only the first reference number is used in the specification, the description applies to any of the similar components having the same first reference number, regardless of the second reference number or other subsequent reference numbers.

[0524] The description set forth herein in conjunction with the accompanying drawings describes example configurations and does not represent all examples that can be implemented or fall within the scope of the claims. The term "example" as used herein means "serving as an example, instance, or illustration" and does not mean "better than" or "better than other examples." This detailed description includes specific details to provide an understanding of the described techniques. However, these techniques can be practiced without these specific details. In some instances, known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described examples.

[0525] The description herein is provided to enable one of ordinary skill in the art to make or use the present disclosure. Various modifications to the present disclosure will be readily apparent to those of ordinary skill in the art, and the general principles defined herein may be applied to other variations without departing from the scope of the present disclosure. Thus, the present disclosure is not limited to the examples and designs described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for wireless communication at a user equipment (UE), comprising: receiving downlink control information from a network node; identifying a first physical downlink control channel candidate in a first search space set, a second physical downlink control channel candidate in a second search space set, and a combined physical downlink control channel candidate in the first search space set and the second search space set; decoding the downlink control information from at least one of the first physical downlink control channel candidate, the second physical downlink control channel candidate, or the combined physical downlink control channel candidate based at least in part on the identification; identifying that the downlink control information corresponds to the combined physical downlink control channel candidate; identifying a starting position of a physical downlink shared channel based at least in part on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate, wherein the starting position is identified as being during or after a first symbol of a later search space set of the first search space set and the second search space set; and The physical downlink shared channel is received based at least in part on the starting location.

2. The method of claim 1, further comprising: An indication is received in the downlink control information, the indication indicating that the downlink control information corresponds to the combined physical downlink control channel candidate.

3. The method of claim 2, wherein receiving the indication comprises: A cyclic redundancy check of the downlink control information is descrambled using a radio network temporary identifier indicating that the downlink control information corresponds to the combined physical downlink control channel candidate.

4. The method of claim 1 , wherein decoding the downlink control information comprises: Downlink control information is decoded using at least a scrambling identifier indicating that the downlink control information corresponds to the combined physical downlink control channel candidate, wherein the decoding includes descrambling a demodulation reference signal and decoded bits of the downlink control information using the scrambling identifier indicating that the downlink control information corresponds to the combined physical downlink control channel candidate.

5. The method of claim 1 , wherein identifying that the downlink control information corresponds to the combined physical downlink control channel candidate comprises: The downlink control information is identified as corresponding to the combined physical downlink control channel candidate based at least in part on a configuration indicating that the first physical downlink control channel candidate is associated with the second physical downlink control channel candidate.

6. The method of claim 1, further comprising: identifying, based at least in part on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate, a first symbol of a later search space set of the first search space set and the second search space set as a reference symbol for identifying a starting position of the physical downlink shared channel; identifying a starting location of the physical downlink shared channel based at least in part on the reference symbol; and The physical downlink shared channel is received based at least in part on the starting location.

7. The method of claim 1, further comprising: identifying a reference time slot from a later time slot of the first search space set and the second search space set based at least in part on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate; identifying a starting position of the physical downlink shared channel based at least in part on the reference time slot and a resource allocation field in the downlink control information, wherein the starting position of the physical downlink shared channel is identified relative to the reference time slot using a value of the resource allocation field; and The physical downlink shared channel is received based at least in part on the starting location.

8. The method of claim 1, further comprising: identifying a reference symbol based on a last symbol of a later search space set of the first search space set and the second search space set; identifying an offset between the reference symbol and a physical downlink shared channel scheduled by the decoded downlink control information; as well as The offset is compared with a UE capability threshold to determine whether to use a default setting or a setting indicated by the downlink control information to receive the physical downlink shared channel, wherein the default setting and the setting indicated by the downlink control information correspond to respective receive beams for receiving the physical downlink shared channel.

9. The method of claim 1, further comprising: identifying a reference time slot from a later time slot of the first search space set and the second search space set based at least in part on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate; identifying a starting position of a physical uplink shared channel based at least in part on the reference time slot and a resource allocation field included in the decoded downlink control information, wherein the starting position is identified relative to the reference time slot based on a value of the resource allocation field; and The physical uplink shared channel is transmitted based at least in part on identifying the starting location.

10. The method of claim 1, further comprising: identifying a reference symbol from a last symbol of a later search space set of the first search space set and the second search space set based at least in part on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate; as well as A scheduled physical uplink shared channel is identified to begin during or after a number of symbols following the reference symbol, the number of symbols being based at least in part on a capability of the UE.

11. The method of claim 1 , further comprising: A physical downlink shared channel scheduled by the downlink control information is identified based at least in part on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate and rate matched around resources in the first physical downlink control channel candidate and the second physical downlink control channel candidate corresponding to the downlink control information.

12. The method of claim 1, further comprising: identifying a precoder granularity of a control resource set associated with the first physical downlink control channel candidate and the second physical downlink control channel candidate; as well as The physical downlink shared channel is further rate matched around one or more demodulation reference signals identified at least in part based on the precoder granularity, wherein the one or more demodulation reference signals correspond to resource element groups of the control resource set when the precoder granularity indicates contiguous resource blocks of the control resource set, and wherein the one or more demodulation reference signals correspond to resource element groups of the combined physical downlink control channel candidates when the precoder granularity does not indicate contiguous resource blocks of the control resource set.

13. The method of claim 1, further comprising: identifying that the downlink control information does not include a transmission configuration indicator status field indicating a transmission configuration indicator status of the physical downlink shared channel scheduled by the downlink control information; and Identifying whether a first control resource set corresponding to the first search space set is the same control resource set as a second control resource set corresponding to the second search space set based at least in part on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate and identifying that the downlink control information does not include the transmission configuration indicator status field.

14. The method of claim 13, further comprising: identifying a transmission configuration indicator state, quasi co-location, or both, of the physical downlink shared channel according to the first control resource set or the second control resource set corresponding to the combined physical downlink control channel candidate based at least in part on identifying that the first control resource set corresponds to the second control resource set; and and determining whether an offset between the downlink control information and a corresponding physical downlink shared channel is greater than or equal to a UE capability threshold, wherein the transmission configuration indicator state, quasi co-location, or both is identified based at least in part on determining that the offset is greater than the UE capability threshold.

15. The method of claim 14, further comprising: Based at least in part on identifying that the first control resource set is different from the second control resource set, using the lower control resource set identifier of the first control resource set and the second control resource set to identify a transmission configuration indicator state, quasi-co-location, or both, of the physical downlink shared channel according to the first control resource set or the second control resource set.

16. The method of claim 13, further comprising: A transmission configuration indicator state, quasi-co-location, or both of the physical downlink shared channel is identified based at least in part on identifying that the first control resource set is different from the second control resource set, according to the first control resource set and the second control resource set, wherein the transmission configuration indicator state, quasi-co-location, or both corresponds to a multi-beam or multi-transmission configuration indicator state physical downlink shared channel.

17. The method of claim 1, further comprising: Identifying the downlink control information scheduling physical downlink shared channel corresponding to the combined physical downlink control channel candidate; as well as Based at least in part on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate, identifying resources of a physical uplink control channel for hybrid automatic repeat request transmissions on the physical downlink shared channel using a number of control channel elements and a starting control channel element index from a first control resource set corresponding to a lower search space set identifier of the first search space set and the second search space set.

18. The method of claim 1, further comprising: Based at least in part on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate, resources of a physical uplink control channel are identified using a number of control channel elements and a starting control channel element index from both a first control resource set corresponding to the first search space set and a second control resource set corresponding to the second search space set.

19. The method of claim 1, further comprising: A first control resource set pool index for a first control resource set corresponding to the first search space set is identified as being different from a second control resource set pool index for a second control resource set corresponding to the second search space set based at least in part on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate.

20. The method of claim 19, further comprising: Identify that the downlink control information corresponding to the combined physical downlink control channel candidate schedules the physical downlink shared channel; identifying a hybrid automatic repeat request acknowledgment codebook for the physical downlink shared channel using the first control resource pool index or the second control resource pool index based at least in part on identifying that the first control resource pool index is different from the second control resource pool index; and The hybrid automatic repeat request acknowledgment codebook for the physical downlink shared channel is transmitted.

21. The method of claim 20, further comprising: Identify a control resource set pool index value corresponding to: a fixed control resource set pool index value of the first control resource set pool index and the second control resource set pool index, a lower control resource set identifier of the first control resource set and the second control resource set, an upper control resource set identifier of the first control resource set and the second control resource set, a lower search space set identifier of the first search space set and the second search space set, an upper search space set identifier of the first search space set and the second search space set, a starting position of the first search space set and the second search space set, an ending position of the first search space set or the second search space set, or any combination thereof, wherein the hybrid automatic repeat request acknowledgment codebook is identified according to the control resource set pool index value.

22. The method of claim 19, further comprising: Identify that the downlink control information corresponding to the combined physical downlink control channel candidate schedules the physical downlink shared channel; identifying a hybrid automatic repeat request acknowledgment codebook for the physical downlink shared channel using the first control resource set pool index and the second control resource set pool index based at least in part on identifying that the first control resource set pool index is different from the second control resource set pool index; and The hybrid automatic repeat request acknowledgment codebook for the physical downlink shared channel is transmitted using the same value based at least in part on identifying the hybrid automatic repeat request acknowledgment codebook using the first control resource set pool index and the second control resource set pool index.

23. The method of claim 19, further comprising: identifying, based at least in part on the first control resource set pool index or the second control resource set pool index, a physical downlink scrambling sequence initialization value, a default beam for a physical downlink shared channel scheduled via the decoded downlink control information, an activated transmission configuration indicator state set, or any combination thereof; as well as Identify a control resource set pool index value corresponding to: a fixed value, a lower control resource set identifier of the first control resource set and the second control resource set, a higher control resource set identifier of the first control resource set and the second control resource set, a lower search space set identifier of the first search space set and the second search space set, a higher search space set identifier of the first search space set and the second search space set, a starting position of the first search space set and the second search space set, an ending position of the first search space set or the second search space set, or any combination thereof, wherein the physical downlink scrambling sequence initialization value, a default beam for a physical downlink shared channel scheduled via decoded downlink control information, an activated transmission configuration indicator state set, or any combination thereof is identified at least in part based on the control resource set pool index value.

24. An apparatus for wireless communication at a user equipment (UE), comprising: means for receiving downlink control information from a network node; means for identifying a first physical downlink control channel candidate in a first search space set, a second physical downlink control channel candidate in a second search space set, and a combined physical downlink control channel candidate in the first search space set and the second search space set; means for decoding the downlink control information from at least one of the first physical downlink control channel candidate, the second physical downlink control channel candidate, or the combined physical downlink control channel candidate based at least in part on the identification; means for identifying that the downlink control information corresponds to the combined physical downlink control channel candidate; means for identifying a starting position of a physical downlink shared channel based at least in part on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate, wherein the starting position is identified as being during or after a first symbol of a later search space set of the first search space set and the second search space set; as well as Means for receiving the physical downlink shared channel based at least in part on the starting location.

25. An apparatus for wireless communication at a user equipment (UE), comprising: processor; a memory coupled to the processor; as well as instructions stored in the memory and executable by the processor to cause the apparatus to: receiving downlink control information from a network node; identifying a first physical downlink control channel candidate in a first search space set, a second physical downlink control channel candidate in a second search space set, and a combined physical downlink control channel candidate in the first search space set and the second search space set; decoding the downlink control information from at least one of the first physical downlink control channel candidate, the second physical downlink control channel candidate, or the combined physical downlink control channel candidate based at least in part on the identification; identifying that the downlink control information corresponds to the combined physical downlink control channel candidate; as well as identifying a starting position of a physical downlink shared channel based at least in part on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate, wherein the starting position is identified as being during or after a first symbol of a later search space set of the first search space set and the second search space set; and The physical downlink shared channel is received based at least in part on the starting location.

26. The apparatus of claim 25, wherein the instructions are further executable by the processor to cause the apparatus to: An indication is received in the downlink control information, the indication indicating that the downlink control information corresponds to the combined physical downlink control channel candidate.

27. The apparatus of claim 26, wherein the instructions executable by the processor to cause the apparatus to receive the indication further cause the apparatus to: A cyclic redundancy check of the downlink control information is descrambled using a radio network temporary identifier indicating that the downlink control information corresponds to the combined physical downlink control channel candidate.

28. The apparatus of claim 25, wherein the instructions executable by the processor to cause the apparatus to decode the downlink control information further cause the apparatus to: Downlink control information is decoded using at least a scrambling identifier indicating that the downlink control information corresponds to the combined physical downlink control channel candidate, wherein the decoding includes descrambling a demodulation reference signal and decoded bits of the downlink control information using the scrambling identifier indicating that the downlink control information corresponds to the combined physical downlink control channel candidate.

29. The apparatus of claim 25, wherein the instructions executable by the processor to cause the apparatus to identify that the downlink control information corresponds to the combined physical downlink control channel candidate further cause the apparatus to: The downlink control information is identified as corresponding to the combined physical downlink control channel candidate based at least in part on a configuration indicating that the first physical downlink control channel candidate is associated with the second physical downlink control channel candidate.

30. The apparatus of claim 25, wherein the instructions are further executable by the processor to cause the apparatus to: identifying, based at least in part on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate, a first symbol of a later search space set of the first search space set and the second search space set as a reference symbol for identifying a starting position of the physical downlink shared channel; identifying a starting location of the physical downlink shared channel based at least in part on the reference symbol; and The physical downlink shared channel is received based at least in part on the starting location.

31. The apparatus of claim 25, wherein the instructions are further executable by the processor to cause the apparatus to: identifying a reference time slot from a later time slot of the first search space set and the second search space set based at least in part on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate; identifying a starting position of the physical downlink shared channel based at least in part on the reference time slot and a resource allocation field in the downlink control information, wherein the starting position of the physical downlink shared channel is identified relative to the reference time slot using a value of the resource allocation field; and The physical downlink shared channel is received based at least in part on the starting location.

32. The apparatus of claim 25, wherein the instructions are further executable by the processor to cause the apparatus to: identifying a reference symbol based on a last symbol of a later search space set of the first search space set and the second search space set; identifying an offset between the reference symbol and a physical downlink shared channel scheduled by the decoded downlink control information; as well as The offset is compared with a UE capability threshold to determine whether to use a default setting or a setting indicated by the downlink control information to receive the physical downlink shared channel, wherein the default setting and the setting indicated by the downlink control information correspond to respective receive beams for receiving the physical downlink shared channel.

33. The apparatus of claim 25, wherein the instructions are further executable by the processor to cause the apparatus to: identifying a reference time slot from a later time slot of the first search space set and the second search space set based at least in part on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate; identifying a starting position of a physical uplink shared channel based at least in part on the reference time slot and a resource allocation field included in the decoded downlink control information, wherein the starting position is identified relative to the reference time slot based on a value of the resource allocation field; and The physical uplink shared channel is transmitted based at least in part on identifying the starting location.

34. The apparatus of claim 25, wherein the instructions are further executable by the processor to cause the apparatus to: identifying a reference symbol from a last symbol of a later search space set of the first and second search space sets based at least in part on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate; and A scheduled physical uplink shared channel is identified to begin during or after a number of symbols following the reference symbol, the number of symbols being based at least in part on a capability of the UE.

35. The apparatus of claim 25, wherein the instructions are further executable by the processor to cause the apparatus to: A physical downlink shared channel scheduled by the downlink control information is identified based at least in part on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate and rate matched around resources in the first physical downlink control channel candidate and the second physical downlink control channel candidate corresponding to the downlink control information.

36. The apparatus of claim 25, wherein the instructions are further executable by the processor to cause the apparatus to: identifying a precoder granularity of a control resource set associated with the first physical downlink control channel candidate and the second physical downlink control channel candidate; and The physical downlink shared channel is further rate matched around one or more demodulation reference signals identified at least in part based on the precoder granularity, wherein the one or more demodulation reference signals correspond to resource element groups of the control resource set when the precoder granularity indicates contiguous resource blocks of the control resource set, and wherein the one or more demodulation reference signals correspond to resource element groups of the combined physical downlink control channel candidates when the precoder granularity does not indicate contiguous resource blocks of the control resource set.

37. The apparatus of claim 25, wherein the instructions are further executable by the processor to cause the apparatus to: identifying that the downlink control information does not include a transmission configuration indicator status field indicating a transmission configuration indicator status of the physical downlink shared channel scheduled by the downlink control information; and Identifying whether a first control resource set corresponding to the first search space set is the same control resource set as a second control resource set corresponding to the second search space set based at least in part on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate and identifying that the downlink control information does not include the transmission configuration indicator status field.

38. The apparatus of claim 37, wherein the instructions are further executable by the processor to cause the apparatus to: identifying a transmission configuration indicator state, quasi co-location, or both, of the physical downlink shared channel according to the first control resource set or the second control resource set corresponding to the combined physical downlink control channel candidate based at least in part on identifying that the first control resource set corresponds to the second control resource set; and and determining whether an offset between the downlink control information and a corresponding physical downlink shared channel is greater than or equal to a UE capability threshold, wherein the transmission configuration indicator state, quasi co-location, or both is identified based at least in part on determining that the offset is greater than the UE capability threshold.

39. The apparatus of claim 38, wherein the instructions are further executable by the processor to cause the apparatus to: Based at least in part on identifying that the first control resource set is different from the second control resource set, using the lower control resource set identifier of the first control resource set and the second control resource set to identify a transmission configuration indicator state, quasi-co-location, or both, of the physical downlink shared channel according to the first control resource set or the second control resource set.

40. The apparatus of claim 37, wherein the instructions are further executable by the processor to cause the apparatus to: A transmission configuration indicator state, quasi-co-location, or both of the physical downlink shared channel is identified based at least in part on identifying that the first control resource set is different from the second control resource set, according to the first control resource set and the second control resource set, wherein the transmission configuration indicator state, quasi-co-location, or both corresponds to a multi-beam or multi-transmission configuration indicator state physical downlink shared channel.

41. The apparatus of claim 25, wherein the instructions are further executable by the processor to cause the apparatus to: Identifying the downlink control information scheduling physical downlink shared channel corresponding to the combined physical downlink control channel candidate; and Based at least in part on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate, identifying resources of a physical uplink control channel for hybrid automatic repeat request transmissions on the physical downlink shared channel using a number of control channel elements and a starting control channel element index from a first control resource set corresponding to a lower search space set identifier of the first search space set and the second search space set.

42. The apparatus of claim 25, wherein the instructions are further executable by the processor to cause the apparatus to: Based at least in part on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate, resources of a physical uplink control channel are identified using a number of control channel elements and a starting control channel element index from both a first control resource set corresponding to the first search space set and a second control resource set corresponding to the second search space set.

43. The apparatus of claim 25, wherein the instructions are further executable by the processor to cause the apparatus to: A first control resource set pool index for a first control resource set corresponding to the first search space set is identified as being different from a second control resource set pool index for a second control resource set corresponding to the second search space set based at least in part on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate.

44. The apparatus of claim 43, wherein the instructions are further executable by the processor to cause the apparatus to: Identify that the downlink control information corresponding to the combined physical downlink control channel candidate schedules the physical downlink shared channel; identifying a hybrid automatic repeat request acknowledgment codebook for the physical downlink shared channel using the first control resource pool index or the second control resource pool index based at least in part on identifying that the first control resource pool index is different from the second control resource pool index; and The hybrid automatic repeat request acknowledgment codebook for the physical downlink shared channel is transmitted.

45. The apparatus of claim 44, wherein the instructions are further executable by the processor to cause the apparatus to: Identify a control resource set pool index value corresponding to: a fixed control resource set pool index value of the first control resource set pool index and the second control resource set pool index, a lower control resource set identifier of the first control resource set and the second control resource set, an upper control resource set identifier of the first control resource set and the second control resource set, a lower search space set identifier of the first search space set and the second search space set, an upper search space set identifier of the first search space set and the second search space set, a starting position of the first search space set and the second search space set, an ending position of the first search space set or the second search space set, or any combination thereof, wherein the hybrid automatic repeat request acknowledgment codebook is identified according to the control resource set pool index value.

46. ​​The apparatus of claim 43, wherein the instructions are further executable by the processor to cause the apparatus to: Identify that the downlink control information corresponding to the combined physical downlink control channel candidate schedules the physical downlink shared channel; identifying a hybrid automatic repeat request acknowledgment codebook for the physical downlink shared channel using the first control resource set pool index and the second control resource set pool index based at least in part on identifying that the first control resource set pool index is different from the second control resource set pool index; and The hybrid automatic repeat request acknowledgment codebook for the physical downlink shared channel is transmitted using the same value based at least in part on identifying the hybrid automatic repeat request acknowledgment codebook using the first control resource set pool index and the second control resource set pool index.

47. The apparatus of claim 43, wherein the instructions are further executable by the processor to cause the apparatus to: identifying, based at least in part on the first control resource set pool index or the second control resource set pool index, a physical downlink scrambling sequence initialization value, a default beam for a physical downlink shared channel scheduled via the decoded downlink control information, an activated transmission configuration indicator state set, or any combination thereof; and Identify a control resource set pool index value corresponding to: a fixed value, a lower control resource set identifier of the first control resource set and the second control resource set, a higher control resource set identifier of the first control resource set and the second control resource set, a lower search space set identifier of the first search space set and the second search space set, a higher search space set identifier of the first search space set and the second search space set, a starting position of the first search space set and the second search space set, an ending position of the first search space set or the second search space set, or any combination thereof, wherein the physical downlink scrambling sequence initialization value, a default beam for a physical downlink shared channel scheduled via decoded downlink control information, an activated transmission configuration indicator state set, or any combination thereof is identified at least in part based on the control resource set pool index value.

48. A non-transitory computer-readable medium storing code for wireless communication at a user equipment (UE), the code comprising instructions executable by a processor to: receiving downlink control information from a network node; identifying a first physical downlink control channel candidate in a first search space set, a second physical downlink control channel candidate in a second search space set, and a combined physical downlink control channel candidate in the first search space set and the second search space set; decoding the downlink control information from at least one of the first physical downlink control channel candidate, the second physical downlink control channel candidate, or the combined physical downlink control channel candidate based at least in part on the identification; identifying that the downlink control information corresponds to the combined physical downlink control channel candidate; identifying a starting position of a physical downlink shared channel based at least in part on identifying that the downlink control information corresponds to the combined physical downlink control channel candidate, wherein the starting position is identified as being during or after a first symbol of a later search space set of the first search space set and the second search space set; and The physical downlink shared channel is received based at least in part on the starting location.

Images