Default quasi-co-location for multiple transmission and reception points based on a single downlink control message

Abstract

Methods, systems, and devices for wireless communications are described. A communications device, which may otherwise be referred to as a user equipment (UE), may receive downlink control information (DCI) on a physical downlink control channel (PDCCH). The DCI may include one or more of: an indication of a transmission configuration indicator (TCI) state set associated with a physical downlink shared channel (PDSCH), one or more receive beams associated with the TCI state set, or a physical downlink shared channel (PDSCH) scheme. The UE may decode the DCI and may determine a time period associated with the indication of the TCI state set. The UE may receive the PDSCH based on the time period according to one or more of: the TCI state set, the one or more receive beams associated with the TCI state set, the PDSCH scheme, or one or more default receive beams.

Description

[0001] Cross-references

[0002] This patent application claims the benefit of U.S. Provisional Patent Application No. 62 / 914,403, filed by Khoshnevisan et al. on October 11, 2019, entitled “Default Quasi-Colocation for Single Downlink Control Information-Based Multiple Transmission Reception Points,” and U.S. Patent Application No. 17 / 036,991, filed by Khoshnevisan et al. on September 29, 2020, entitled “Default Quasi-Colocation for Single Downlink Control Information-Based Multiple Transmission Reception Points,” 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 default quasi-co-location (QCL) for multiple transmit-receive points (TRPs) based on a single downlink control information (DCI).

[0004] background

[0005] 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 of which simultaneously supports communication with multiple communication devices, which may be further referred to as user equipment (UE).

[0006] Overview

[0007] The described techniques may involve configuring a communication device (which may be otherwise referred to as a user equipment (UE)) to support default quasi-co-location (QCL) for multiple transmit-receive points (TRPs) based on a single downlink control information (DCI). In some examples, the communication device may be configured to receive the DCI on a physical downlink control channel (PDCCH). The DCI may include one or more of the following: an indication of a transmission configuration indicator (TCI) state set related to a physical downlink shared channel (PDSCH), one or more receive beams associated with the TCI state set, or a PDSCH scheme. The UE may decode the DCI and determine a time period associated with the indication of the TCI state set. The UE may receive the PDSCH based on the time period according to one or more of the following: the TCI state set, the one or more receive beams associated with the TCI state set, the PDSCH scheme, or one or more default receive beams. As a result, the communications device may include features for improved power consumption, spectral efficiency, higher data rates, and in some examples, enhanced efficiency for high reliability and low latency operation, as well as other benefits, by supporting default QCL for multiple TRPs based on a single DCI.

[0008] A wireless communication method is described. The method may include receiving DCI on a PDCCH, the DCI including one or more of: an indication of a TCI state set related to a PDSCH, one or more receive beams associated with the TCI state set, or a PDSCH scheme; decoding the DCI; determining a time period associated with the indication of the TCI state set; and receiving a PDSCH based on the time period according to one or more of: the TCI state set, the one or more receive beams associated with the TCI state set, the PDSCH scheme, or one or more default receive beams.

[0009] An apparatus for wireless communication 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 a DCI on a PDCCH, the DCI including one or more of: an indication of a TCI state set associated with a PDSCH, one or more receive beams associated with the TCI state set, or a PDSCH scheme; decode the DCI; determine a time period associated with the indication of the TCI state set; and receive the PDSCH based on the time period according to one or more of: the TCI state set, the one or more receive beams associated with the TCI state set, the PDSCH scheme, or one or more default receive beams.

[0010] Another apparatus for wireless communication is described. The apparatus may include means for receiving, on a PDCCH, DCI including one or more of: an indication of a TCI state set associated with a PDSCH, one or more receive beams associated with the TCI state set, or a PDSCH scheme; decoding the DCI; determining a time period associated with the indication of the TCI state set; and receiving, based on the time period, the PDSCH according to one or more of: the TCI state set, the one or more receive beams associated with the TCI state set, the PDSCH scheme, or one or more default receive beams.

[0011] A non-transitory computer-readable medium storing code for wireless communication is described. The code may include instructions executable by a processor to: receive DCI on a PDCCH, the DCI including one or more of: an indication of a TCI state set related to a PDSCH, one or more receive beams associated with the TCI state set, or a PDSCH scheme; decode the DCI; determine a time period associated with the indication of the TCI state set; and receive a PDSCH based on the time period according to one or more of: the TCI state set, the one or more receive beams associated with the TCI state set, the PDSCH scheme, or one or more default receive beams.

[0012] 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 capabilities associated with the one or more receive beams; and selecting one or more of the following based on the capabilities: the TCI state set, the one or more receive beams associated with the TCI state set, the PDSCH scheme, or one or more default receive beams, wherein receiving the PDSCH may be based on the selection.

[0013] Some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for: including an indication of the time period in the capability; and transmitting the capability carrying the indication of the time period.

[0014] 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 TCI field in a DCI, wherein the TCI field indicates one or more TCI states in the TCI state set.

[0015] 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: determining that a time offset period may be greater than or equal to the time period, wherein receiving PDSCH includes: receiving PDSCH based on the time offset period being greater than or equal to the time period according to one or more of the following: the one or more TCI states or PDSCH schemes in the TCI state set.

[0016] In some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein, the time offset period includes a duration from an end symbol of a PDCCH carrying DCI to a start symbol of a PDSCH that schedules the PDSCH.

[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 the following actions: determining that a time offset period may be less than the time period; receiving a first set of data samples according to a first default receive beam or PDSCH scheme among the one or more default receive beams based on that the time offset period is less than the time period; and receiving a second set of data samples according to a second default receive beam or PDSCH scheme among the one or more default receive beams based on that the time offset period is less than the time period.

[0018] Some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for storing one or more of the first data sample set or the second data sample set based on the time offset period being less than the time period, wherein the stored first data sample set or the stored second data sample set corresponds to the first antenna panel or the second antenna panel.

[0019] Some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for processing one or more of the first data sample set or the second data sample set based on a PDSCH scheme, wherein the PDSCH scheme includes a spatial division multiplexing (SDM) scheme.

[0020] Some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for processing one or more of the first data sample set or the second data sample set based on the TCI state set.

[0021] Some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for processing one or more of the first data sample set or the second data sample set based on a PDSCH scheme, wherein the PDSCH scheme includes a frequency division multiplexing (FDM) scheme, wherein processing one or more of the first data sample set or the second data sample set includes processing the first data sample set in a first resource block set corresponding to a first TCI state in the TCI states, and processing the second data sample set in a second resource block set corresponding to a second TCI state in the TCI states.

[0022] Some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for processing one or more of the first data sample set or the second data sample set based on a PDSCH scheme, wherein the PDSCH scheme includes a time division multiplexing (TDM) scheme, wherein processing one or more of the first data sample set or the second data sample set includes processing the first data sample set in a first transmission time interval (TTI) set corresponding to a first TCI state in the TCI state, and processing the second data sample set in a second TTI set corresponding to a second TCI state in the TCI state.

[0023] 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 a second time period for decoding the DCI; and transmitting, along with the capability, a second indication of the second time period related to decoding the DCI.

[0024] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, the time period may be different from the second time period.

[0025] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, the second time period may be less than the time period.

[0026] In some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein, the time period is related to one or more symbols of a number of symbols used to receive a PDCCH and apply spatial QCL information to a PDSCH.

[0027] 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 a number of symbols for receiving the PDCCH based on the time period, applying spatial QCL information to the PDSCH, and receiving the PDSCH based on the spatial QCL information.

[0028] Some examples of the methods, apparatuses (devices) and non-transitory computer-readable media described herein may further include operations, features, apparatuses or instructions for determining that the time offset period may be greater than or equal to the second time period, and determining that the time offset period may be less than or equal to the time period, wherein receiving PDSCH includes receiving PDSCH based on one or more of the time offset period being greater than or equal to the second time period or the time offset period being less than or equal to the time period: the TCI state set, the one or more receive beams associated with the TCI state set, or one or more default receive beams for PDSCH.

[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: determining that the time offset period may be less than the second time period, wherein receiving PDSCH includes: receiving PDSCH based on the time offset period being less than the second time period according to one or more of the following: the one or more default receive beams for PDSCH or the default PDSCH scheme for PDSCH.

[0030] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, a default PDSCH scheme may be based on a preconfigured PDSCH scheme set.

[0031] In some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein, a default receive beam may be based on a preconfigured receive beam set.

[0032] In some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein, a PDSCH scheme or a default PDSCH scheme includes a single TCI state scheme, a TDM scheme, an FDM scheme, an SDM scheme, or a code division multiplexing (CDM) scheme.

[0033] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatus, or instructions for receiving a PDSCH over a duration, wherein the duration includes a transmission opportunity, a TTI, and the TTI includes one or more OFDM symbols, one or more mini-slots, one or more time slots, or a combination thereof.

[0034] Some examples of the methods, apparatuses (devices) and non-transitory computer-readable media described herein may further include operations, features, apparatuses or instructions for: operating according to one or more of the following during a first portion of the duration: the TCI state set, the one or more receive beams associated with the TCI state set, the PDSCH scheme, one or more default receive beams, or a default PDSCH scheme; and operating according to one or more of the following during a second portion of the duration: the TCI state set, the one or more receive beams associated with the TCI state set, the PDSCH scheme, one or more default receive beams, or a default PDSCH scheme.

[0035] Some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for performing, during a first portion, channel measurement estimation associated with one or more of the PDCCH or PDSCH based on one or more of: the TCI state set, the one or more receive beams associated with the TCI state set, the PDSCH scheme, one or more default receive beams, or a default PDSCH scheme.

[0036] Some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for performing, during the second portion, channel measurement estimation associated with one or more of the PDCCH or PDSCH based on one or more of: the TCI state set, the one or more receive beams associated with the TCI state set, the PDSCH scheme, one or more default receive beams, or a default PDSCH scheme.

[0037] Some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for: determining a difference between the first portion and the second portion based on one or more of: the TCI state set, the one or more receive beams associated with the TCI state set, the PDSCH scheme, one or more default receive beams, or a default PDSCH scheme; and determining a reference signal position in the second portion of the duration based on the difference.

[0038] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, the reference signal locations include demodulation reference signal (DMRS) locations.

[0039] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, the reference signal location includes a starting symbol of the second portion of the duration.

[0040] In some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein, determining the reference signal position in the second portion of the duration may be further based on a length of one or more of the PDCCH or the PDSCH.

[0041] In some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein, determining the reference signal position in the second portion of the duration may be further based on a second time period for decoding the DCI.

[0042] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, the second time period includes a number of symbols.

[0043] Some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for determining a subcarrier spacing based on the capability, wherein determining the second time period may be based on the subcarrier spacing.

[0044] A wireless communication method is described. The method may include identifying a first default receive beam in a default receive beam set based on a control resource set (CORESET) identifier; receiving an indication of a second default receive beam in the default receive beam set; determining the second default receive beam based on the indication; and jointly receiving one or more data samples for a PDSCH on the first default receive beam and the second default receive beam.

[0045] An apparatus for wireless communication 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: identify a first default receive beam in a default receive beam set based on a CORESET identifier; receive an indication of a second default receive beam in the default receive beam set; determine the second default receive beam based on the indication; and jointly receive one or more data samples for a PDSCH on the first default receive beam and the second default receive beam.

[0046] Another apparatus for wireless communication is described. The apparatus may include means for identifying a first default receive beam in a default receive beam set based on a CORESET identifier; receiving an indication of a second default receive beam in the default receive beam set; determining the second default receive beam based on the indication; and jointly receiving one or more data samples for a PDSCH on the first default receive beam and the second default receive beam.

[0047] A non-transitory computer-readable medium storing code for wireless communication is described. The code may include instructions executable by a processor to: identify a first default receive beam in a default receive beam set based on a CORESET identifier; receive an indication of a second default receive beam in the default receive beam set; determine the second default receive beam based on the indication; and jointly receive one or more data samples for a PDSCH on the first default receive beam and the second default receive beam.

[0048] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, the CORESET identifier may be the lowest CORESET identifier in an ending symbol or an ending slot associated with the transmission opportunity.

[0049] Some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for monitoring one or more CORESETs within an active bandwidth portion associated with a serving cell, and the CORESET identifier is the lowest CORESET identifier in the most recent symbol or most recent time slot in which the CORESETs are monitored within the active bandwidth portion associated with the serving cell.

[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 receiving an additional indication of a first default receive beam in a receive beam set in a first control signaling, wherein the first control signaling includes a first MAC-CE signaling.

[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 receiving an indication of a second default receive beam in a default receive beam set in a second control signaling, wherein the second control signaling includes a second MAC-CE signaling.

[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 receiving one or more of an indication of a second default receive beam in a default receive beam set or an additional indication of a first default receive beam in a default receive beam set in control signaling, wherein the control signaling includes MAC-CE signaling.

[0053] In some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein, the control signaling includes a TCI state pattern indicating one or more TCI states associated with one or more time periods.

[0054] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the TCI state pattern corresponds to one or more of: a periodicity associated with the TCI state, a duration associated with the TCI state, or a time offset period associated with the TCI state.

[0055] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, a first default receive beam in a default receive beam set may differ from a second default receive beam in the default receive beam set over one or more time periods.

[0056] In some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein, the one or more time periods are associated with one or more TTIs, which include one or more symbols, one or more mini-slots, one or more time slots, or a combination thereof.

[0057] A wireless communication method is described. The method may include identifying a first default receive beam in a default receive beam set based on a first core set identifier, determining a second default receive beam in the default receive beam set based on a second core set identifier, and jointly receiving one or more data samples for a PDSCH on the first default receive beam and the second default receive beam.

[0058] An apparatus for wireless communication 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: identify a first default receive beam in a default receive beam set based on a first core set identifier; determine a second default receive beam in the default receive beam set based on a second core set identifier; and jointly receive one or more data samples for a PDSCH on the first default receive beam and the second default receive beam.

[0059] Another apparatus for wireless communication is described. The apparatus may include means for identifying a first default receive beam in a default receive beam set based on a first CORESET identifier; determining a second default receive beam in the default receive beam set based on a second CORESET identifier; and jointly receiving one or more data samples for a PDSCH on the first default receive beam and the second default receive beam.

[0060] A non-transitory computer-readable medium storing code for wireless communication is described. The code may include instructions executable by a processor to: identify a first default receive beam in a default receive beam set based on a first core set identifier; determine a second default receive beam in the default receive beam set based on a second core set identifier; and jointly receive one or more data samples for a PDSCH on the first default receive beam and the second default receive beam.

[0061] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, the first CORESET identifier may be the first lowest CORESET identifier in the most recent symbol or most recent slot monitoring the CORESET within the active bandwidth portion associated with the serving cell.

[0062] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, the second CORESET identifier may be the second lowest CORESET identifier in an ending symbol or an ending slot associated with the transmission opportunity.

[0063] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, the first CORESET identifier may be different from the second CORESET identifier.

[0064] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, the first CORESET identifier corresponds to a first TCI state.

[0065] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, the second CORESET identifier corresponds to a second TCI state different from the first TCI state.

[0066] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatus, or instructions for: receiving control signaling comprising an indication of a default receive beam pair corresponding to a TCI state pair, wherein the default receive beam set comprises the default receive beam pair.

[0067] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, the control signaling includes radio resource control (RRC) signaling.

[0068] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, the control signaling includes MAC-CE signaling.

[0069] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatus, or instructions for determining a second default receive beam in a default receive beam set based on a first TCI state associated with a first default receive beam, the first TCI state being paired with a second TCI state associated with the second default receive beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0071] Figure 1 and 2 An example of a wireless communication system supporting default quasi-co-location (QCL) for multiple transmit reception points (TRPs) based on a single downlink control information (DCI) in accordance with aspects of the present disclosure is illustrated.

[0072] Figure 3 An example of a scheme supporting default QCL for multiple TRPs based on a single DCI according to aspects of the present disclosure is illustrated.

[0073] Figure 4 Examples of antenna configurations supporting default QCL for multiple TRPs based on a single DCI are illustrated in accordance with aspects of the present disclosure.

[0074] Figures 5 to 9 An example of a scheme supporting default QCL for multiple TRPs based on a single DCI according to aspects of the present disclosure is illustrated.

[0075] Figure 10 and 11 A block diagram of a device supporting default QCL for multiple TRPs based on a single DCI is shown in accordance with aspects of the present disclosure.

[0076] Figure 12 A block diagram of a communication manager supporting a default QCL for multiple TRPs based on a single DCI is shown in accordance with aspects of the present disclosure.

[0077] Figure 13 A diagram of a system including a device supporting default QCL for multiple TRPs based on a single DCI is shown in accordance with aspects of the present disclosure.

[0078] Figures 14 to 17 A flow chart illustrating a method of supporting default QCL for multiple TRPs based on a single DCI according to aspects of the present disclosure is shown.

[0079] Detailed description

[0080] Some wireless communication systems may include one or more communication devices, such as user equipment (UE) and base stations, for example, a next-generation NodeB or a Gigabit NodeB (either of which may be referred to as a gNB) that may support multiple radio access technologies, including 4G systems (such as Long Term Evolution (LTE) systems), fifth-generation (5G) systems (which may be referred to as New Radio (NR) systems). The UE may be configured to receive downlink control information (DCI) on a physical downlink control channel (PDCCH). The DCI may include one or more of the following: an indication of a transmission configuration indicator (TCI) state set related to a physical downlink shared channel (PDSCH), one or more receive beams associated with the TCI state set, or a PDSCH scheme. The UE may decode the DCI and may determine a time period associated with the indication of the TCI state set. The UE may receive the PDSCH according to one or more of the following: the TCI state set, the one or more receive beams associated with the TCI state set, the PDSCH scheme, or one or more default receive beams based on the time period. As a result, communications devices can include features for improved power consumption, spectral efficiency, higher data rates, and in some examples, enhanced efficiency for high reliability and low latency operation, as well as other benefits, by supporting default QCL for multiple transmit receive points (TRPs) based on a single DCI.

[0081] Certain aspects of the subject matter described in this disclosure may be implemented to achieve one or more of the following potential advantages. The techniques employed by the described one or more communication devices may provide benefits and enhancements to the operation of the communication devices. For example, the operations performed by the described one or more communication devices may provide improvements to power saving operations. In some examples, the described one or more communication devices may support high reliability and low latency communications based on a default QCL for multiple TRPs based on a single DCI, among other things. The described techniques may thus include features for improving power consumption, spectral efficiency, higher data rates, and in some examples, may promote enhanced efficiency for high reliability and low latency operations, as well as other benefits.

[0082] Various aspects of the present disclosure are initially described in the context of a wireless communication system. Various aspects of the present disclosure are further illustrated and described by and with reference to apparatus diagrams, system diagrams, and flow diagrams related to default QCL for multiple TRPs based on a single DCI.

[0083] Figure 1 An example of a wireless communication system 100 that supports a default QCL for multiple TRPs based on a single DCI 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.

[0084] 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.

[0085] 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 .

[0086] 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.

[0087] 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.

[0088] 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.

[0089] 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 .

[0090] 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.

[0091] 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).

[0092] 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).

[0093] 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.

[0094] The signal waveform transmitted on the carrier may include multiple subcarriers (e.g., using multi-carrier modulation (MCM) techniques such as orthogonal frequency division multiplexing (OFDM) or 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.

[0095] 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.

[0096] The time interval of the base station 105 or the UE 115 can be expressed as a multiple of a basic time unit, which can be, for example, 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).

[0097] 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., Nf The duration of a symbol period may depend on the subcarrier spacing or the operating band.

[0098] 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)).

[0099] 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 .

[0100] 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.

[0101] Macro cells generally cover a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access to UEs 115 that have service subscriptions with a network provider that supports the macro cells. Small cells may be associated with lower-power base stations 105 (compared to macro cells) and may operate in the same or different frequency bands (e.g., licensed or unlicensed) as the macro cells. Small cells may provide unrestricted access to UEs 115 that have service subscriptions with the network provider, or they may provide restricted access to UEs 115 associated with the small cell (e.g., UEs 115 in a closed subscriber group (CSG) or UEs 115 associated with users in a home or office). A base station 105 may support one or more cells and may also support communication across one or more cells using one or more component carriers. 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.

[0102] 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.

[0103] 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.

[0104] 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.

[0105] 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.

[0106] 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.

[0107] 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.

[0108] 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).

[0109] 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.

[0110] 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 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).

[0111] 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, the 300 MHz to 3 GHz region is referred to as the ultra-high frequency (UHF) region or 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) than 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.

[0112] 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.

[0113] 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.

[0114] 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.

[0115] 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.

[0116] 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).

[0117] 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.

[0118] 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.

[0119] 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 105). 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).

[0120] 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).

[0121] 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.

[0122] 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.

[0123] Figure 2 An example of a wireless communication system 200 that supports a default DCL for multiple TRPs based on a single DCI according to aspects of the present disclosure is illustrated. In some examples, the wireless communication system 200 can implement aspects of the wireless communication system 100. For example, the wireless communication system 200 can support one or more radio access technologies, including a 4G system (such as an LTE system, an LTE-A system, or an LTE-A Pro system), and a 5G system (which can be referred to as an NR system). The wireless communication system 200 can include a base station 105-a, a base station 105-b, and a UE 115-a, which can be referenced to Figure 1 Examples of corresponding devices described. In some examples, in order to support higher data traffic and enhance coverage in 5G systems, the wireless communication system 200 may include multiple TRPs (e.g., macro cells, small cells, pico cells, femto cells, remote radio heads, relay nodes, etc.). Figure 2 In the example of , one or more of base station 105-a or base station 105-b can be a TRP. The wireless communication system 200 can therefore support improved power consumption, spectral efficiency, higher data rates, and in some examples can promote enhanced efficiency for wireless communication operations and other benefits.

[0124] One or more of base station 105-a, base station 105-b, or UE 115-b may be configured with multiple antennas that may be used to employ techniques such as transmit diversity, receive diversity, MIMO communication, or beamforming. The antennas of one or more of base station 105-a, base station 105-b, or UE 115-b may be located within one or more antenna arrays or antenna panels that may support MIMO operation or transmit or receive beamforming. For example, one or more base station 105-a or base station 105-b 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 one or more of base station 105-a or base station 105-b may be located at different geographic locations. One or more of base station 105-a or base station 105-b may have an antenna array having several rows and columns of antenna ports that the base station 105 may use to support beamforming for communications with UE 115. Likewise, UE 115 may have one or more antenna arrays that may support various MIMO or beamforming operations. Additionally or alternatively, the antenna panel may support radio frequency beamforming for signals transmitted via one or more antenna ports.

[0125] One or more of base station 105-a or base station 105-b may support downlink transmission and UE 115-a may support downlink reception. Similarly, UE 115-a may support uplink transmission and one or more of base station 105-a or base station 105-b may support uplink reception. One or more of base station 105-a or base station 105-b may transmit data or control information to UE 115-a via one or more physical downlink channels. For example, base station 105-a may transmit control information (e.g., DCI) via a physical downlink channel (such as PDCCH 205) and transmit data (e.g., user data, data samples, packets) via another physical downlink channel (such as PDSCH 210). Likewise, the base station 105 - b may transmit control information (e.g., DCI) via a physical downlink channel such as the PDCCH and / or transmit data (e.g., user data, data samples, packets) via a physical downlink channel such as the PDSCH 215 .

[0126] In some examples, one or more of base station 105-a, base station 105-b, or UE 115-b may perform communication operations (e.g., downlink transmission, downlink reception, uplink transmission, uplink reception) according to one or more beams (also referred to as directional beams). In some examples, one or more antenna ports associated with one or more of base station 105-a, base station 105-b, or UE 115-b may be associated with one or more quasi-co-located (QCL) type parameters (also referred to as QCL references). For example, one or more of base station 105-a, base station 105-b, or UE 115-b may be configured to use different QCL references (such as QCL type D references corresponding to different spatial receive beams (or antenna ports)) for channel measurements, etc. In some examples, the QCL reference may be a reference resource identifier, such as, for example, a reference signal identifier, etc. The reference resource identifier may be configured as a reference to a specific QCL parameter (eg, QCL Type A, QCL Type B, QCL Type C, QCL Type D).

[0127] In some examples, one or more of base station 105-a, base station 105-b, or UE 115-b may perform communication operations (e.g., downlink transmission, downlink reception, uplink transmission, uplink reception) according to one or more TCI states. Base station 105-a or one or more of base station 105-b may dynamically transmit an indication of one or more TCI states, or a set of TCI states, in a DCI. The TCI state may indicate a QCL relationship between a downlink reference signal and a spatial receive beam (or antenna port). In other words, each TCI state may include parameters for configuring a QCL relationship between one or two (or more) downlink reference signals and an antenna port (e.g., an antenna port associated with PDSCH 210).

[0128] In some examples, one or more of base station 105-a, base station 105-b, or UE 115-a may be configured to support the use of a single DCI for multi-TRP operation. For example, when supporting a single DCI for multi-TRP operation, base station 105-a or one or more of base station 105-b may each transmit a DCI scheduling a separate PDSCH via a separate PDCCH. In other words, a single PDCCH schedules a single PDSCH. One or more of base station 105-a, base station 105-b, or UE 115-a may support various PDSCH schemes (such as spatial division multiplexing (SDM), frequency division multiplexing (FDM), or time division multiplexing (TDM)) to enable one or more of base station 105-a, base station 105-b, or UE 115-a to support a single DCI for multi-TRP operation. Example reference using a single DCI for multi-TRP operation Figure 3 、 5 and 6 for description.

[0129] Figure 3 An example of a scheme 300 for supporting default QCL for multiple TRPs based on a single DCI according to aspects of the present disclosure is illustrated. The scheme 300 may be associated with a resource grid 305, which may be dependent on time and frequency resources. In some examples, the time and frequency resources may be associated with a resource element, which may span one symbol x one subcarrier. In some examples, multiple resource elements may be grouped into resource blocks, where each resource block may span a number of symbols x a number of subcarriers. For example, a resource block may span 7 symbols (e.g., 0.5 ms) x 12 subcarriers (e.g., 180 kHz).

[0130] According to Scheme 300 and with reference to Figure 2 , one or more of base station 105-a or base station 105-b may use the time and frequency resources of resource grid 305 to transmit different spatial layers. For example, base station 105-a may use number of resource blocks 310 to transmit a spatial layer, and base station 105-b may use number of resource blocks 315 to transmit a spatial layer. In some examples, one or more of the time and frequency resources of resource grid 305 may overlap. For example, number of resource blocks 310 associated with transmitting a spatial layer by base station 105-a may overlap with number of resource blocks 315 associated with transmitting a spatial layer by base station 105-b. One or more of base station 105-a or base station 105-b may therefore support SDM. In other words, SDM may allow different TRPs (e.g., base station 105-a, base station 105-b) to transmit different spatial layers in overlapping time and / or frequency resources (e.g., resource blocks and / or symbols).

[0131] In some examples, different spatial layers associated with different TRPs may be associated with different TCI states. For example, base station 105-a may use several resource blocks 310 to transmit spatial layers according to a first TCI state 320, and base station 105-b may use several resource blocks 315 to transmit spatial layers according to a second TCI state 325 that is different from the first TCI state 320. The first TCI state 320 may be associated with a first QCL parameter (e.g., a first spatial receive beam), and the second TCI state 325 may be associated with a second QCL parameter (e.g., a second spatial receive beam). The resource grid 305 may include several codewords associated with a reference signal. For example, resource block 330 may include several codewords associated with a reference signal (which may be a demodulation reference signal (DMRS)). In some examples, different TCI states may be associated with different antenna ports. Example reference to different TCI states associated with different antenna ports Figure 4 Provide a description.

[0132] Figure 4 An example of an antenna port configuration 400 that supports default QCL for multiple TRPs based on a single DCI according to aspects of the present disclosure is illustrated. Antenna port configuration 400 may include number of antenna ports 405 and number of antenna ports 410. In some examples, one or more of number of antenna ports 405 and number of antenna ports 410 may be configured as follows: Figure 3 The resource grid described in . Figure 3 In the example of FIG, number of antenna ports 405 may include antenna port 0 and antenna port 1. Antenna port 0 may be used for single antenna transmission, while antenna port 1 may be used for antenna transmit diversity and spatial multiplexing (e.g., using two or four antennas). Number of antenna ports 410 may include antenna port 2 and antenna port 3. Antenna port 2 and antenna port 3 may be used for antenna transmit diversity and spatial multiplexing (e.g., using two or four antennas). In some examples, one or more of antenna port 0, antenna port 1, antenna port 2, or antenna port 3 may be referred to as a DMRS port due to being associated with transmitting one or more DMRSs.

[0133] In some examples, reference signal ports (such as DMRS ports corresponding to different TCI states) can be in different code division multiplexing (CDM) groups. For example, the DMRS port corresponding to TCI state 415 can be part of CDM group 420, while the DMRS port corresponding to TCI state 425 can be part of CDM group 430. Figure 3 In the example of FIG. 4 , two spatial layers (eg, DMRS ports 0 and 1 of CDM group 420) may be referred to as Figure 2 Transmitted by one or more of base station 105-a or base station 105-b according to TCI state 415. Likewise, two spatial layers (e.g., DMRS ports 2, 3 portions of CDM group 430) may be referred to, for example, Figure 2 Transmitted by one or more of base station 105 - a or base station 105 - b according to TCI state 425 .

[0134] Figure 5 An example of a scheme 500 for supporting default QCL for multiple TRPs based on a single DCI according to aspects of the present disclosure is illustrated. The scheme 500 may be associated with a resource grid 505, which may be dependent on time and frequency resources. In some examples, the time and frequency resources may be associated with a resource element, which may span one symbol x one subcarrier. In some examples, multiple resource elements may be grouped into resource blocks, where each resource block may span a number of symbols x a number of subcarriers. For example, a resource block may span 7 symbols (e.g., 0.5 ms) x 12 subcarriers (e.g., 180 kHz).

[0135] According to Scheme 500 and with reference to Figure 2 , one or more of base station 105-a or base station 105-b may use the time and frequency resources of resource grid 505 to transmit different spatial layers. For example, base station 105-a may use number of resource blocks 510 to transmit a spatial layer, and base station 105-b may use number of resource blocks 515 to transmit a spatial layer. Number of resource blocks 510 may be different from number of resource blocks 515. For example, number of resource blocks 510 and number of resource blocks 515 may not overlap in time and / or frequency resources. For example, one or more of base station 105-a or base station 105-b may support FDM. In some examples, one or more of base station 105-a or base station 105-b may use FDM to transmit different spatial layers. Thus, FDM allows different TRPs (e.g., base station 105-a, base station 105-b) to transmit different spatial layers in different frequency resources (e.g., resource blocks).

[0136] In some examples, different spatial layers associated with different TRPs may be associated with different TCI states. For example, base station 105-a may transmit a spatial layer using a number of resource blocks 510 according to a first TCI state 520, and base station 105-b may transmit a spatial layer using a number of resource blocks 515 according to a second TCI state 525 that is different from the first TCI state 520. The first TCI state 520 may be associated with a first QCL parameter (e.g., a first spatial receive beam), while the second TCI state 525 may be associated with a second QCL parameter (e.g., a second spatial receive beam). Thus, different sets of resource blocks may be transmitted with different TCI states. The resource grid 505 may also include a number of codewords associated with a reference signal. For example, the resource block 530 may include a number of codewords associated with a reference signal (which may be a DMRS).

[0137] Figure 6 An example of a scheme 600 for supporting default QCL for multiple TRPs based on a single DCI according to aspects of the present disclosure is illustrated. The scheme 600 may be associated with a resource grid 605, which may be dependent on time and frequency resources. In some examples, the time and frequency resources may be associated with a resource element, which may span one symbol x one subcarrier. In some examples, multiple resource elements may be grouped into resource blocks, where each resource block may span a number of symbols x a number of subcarriers. For example, a resource block may span 7 symbols (e.g., 0.5 ms) x 12 subcarriers (e.g., 180 kHz).

[0138] According to Scheme 600 and with reference to Figure 2, one or more of base station 105-a or base station 105-b may use the time and frequency resources of resource grid 605 to transmit different spatial layers. For example, base station 105-a may use number of resource blocks 610 to transmit a spatial layer, and base station 105-b may use number of resource blocks 615 to transmit a spatial layer. Number of resource blocks 610 may be different from number of resource blocks 515. For example, number of resource blocks 610 and number of resource blocks 615 may not overlap in time and / or frequency resources. For example, one or more of base station 105-a or base station 105-b may support time division multiplexing (TDM). In some examples, one or more of base station 105-a or base station 105-b may use TDM to transmit different spatial layers. Thus, TDM allows different TRPs (e.g., base station 105-a, base station 105-b) to transmit different spatial layers in different time resources (e.g., different mini-slots, time slots, etc.). In some examples, TDM allows different TRPs (e.g., base station 105-a, base station 105-b) to transmit different spatial layers with different repetitions within the same time slot or in different time slots.

[0139] In some examples, different spatial layers associated with different TRPs may be associated with different TCI states. For example, base station 105-a may transmit a spatial layer using a number of resource blocks 610 according to a first TCI state 620, and base station 105-b may transmit a spatial layer using a number of resource blocks 615 according to a second TCI state 625 that is different from the first TCI state 620. The first TCI state 520 may be associated with a first QCL parameter (e.g., a first spatial receive beam), while the second TCI state 625 may be associated with a second QCL parameter (e.g., a second spatial receive beam). Thus, different sets of resource blocks may be transmitted using different TCI states. The resource grid 605 may also include a number of codewords associated with a reference signal. For example, the resource block 630 may include a number of codewords associated with a reference signal (which may be a DMRS).

[0140] Reference Figure 2In some examples, when one or more of base station 105-a or base station 105-b supports the use of a single DCI for multi-TRP operation, the TCI field in the DCI may indicate multiple TCI states. For example, when base station 105-a or one or more of base station 105-b uses a single DCI to schedule multi-TCI state transmissions, the TCI field in the DCI may indicate two TCI states so that UE 115-a can receive scheduled PDSCH (e.g., PDSCH 210, PDSCH 215). In some examples, one or more of base station 105-a or base station 105-b may be configured to support QCL indication related to reference signals (e.g., one or more DMRS) for PDSCH via DCI signaling. The TCI field in the DCI signaling may thus point to two QCL relationships that reference two reference signal sets. In some examples, each TCI code point in the DCI may correspond to one or two TCI states.

[0141] In some examples, one or more of base station 105-a, base station 105-b, or UE 115 may support dynamic switching between multiple TCI states (i.e., multiple TRPs) and single TCI state transmissions. For example, UE 115-a may be configured to determine to operate according to a single TRP operation when the TCI field in the DCI points to one TCI state. Alternatively, UE 115-a may be configured to determine to operate according to multiple TRPs when the TCI field in the DCI points to more than one TCI state (e.g., two TCI states). Therefore, one or more of base station 105-a, base station 105-b, or UE 115-a may support dynamic switching between different multiple TCI state schemes (e.g., SDM, FDM, TDM) based on indications in DCI signaling.

[0142] One or more of base station 105-a, base station 105-b, or UE 115-a may be configured to support default QCL determination. In some examples, one or more of base station 105-a, base station 105-b, or UE 115-a may be configured to support default QCL for a multi-TRP scheme, including how to define more than one default QCL (i.e., for SDM and FDM schemes, two beams are received simultaneously at two different antenna panels of UE 115-a).

[0143] DCI signaling may be associated with one or more DCI formats. In some examples, UE 115-a may determine the presence or absence of a TCI status indication for a PDSCH (e.g., PDSCH 210, PDSCH 215) in the DCI signaling. In some examples, the TCI field may not be present in a first DCI format (e.g., DCI format 1_0). In some other examples, in a second DCI format (e.g., DCI format 1_1), UE 115-a may determine the presence of a TCI status indication based on a higher layer parameter. For example, when a higher layer parameter (e.g., TCI-PresentInDCI parameter) is enabled for a CORESET that schedules a PDSCH, UE 115-a may determine the presence of a TCI status indication. The TCI status indication may be a one-bit or multi-bit indication in the DCI signaling.

[0144] In some examples, UE 115-a may determine a time offset period that may be related to a timing offset between a downlink DCI received by UE 115-a and a corresponding PDSCH (e.g., PDSCH 210, PDSCH 215). UE 115-a may determine that the time offset period is equal to or greater than a threshold period (e.g., timeDurationForQCL (time duration of QCL)). In some examples, the threshold period may be based on UE capabilities (e.g., subcarrier spacing (e.g., candidate values for 120kHz SCS: {14,28} symbols)). In some examples, if a higher layer parameter (e.g., tci-PresentInDCI) is enabled in the DCI, and when the PDSCH is scheduled by a first DCI format (e.g., DCI format 1_1), UE 115 may use the TCI state indicated in the TCI field of the DCI to make a QCL assumption for the PDSCH. Alternatively, if no higher layer parameter (e.g., tci-PresentInDCI) is configured for the CORESET that schedules the PDSCH or the PDSCH is scheduled by the second DCI format (e.g., DCI format 1_0), the UE 115 may be configured to use a TCI state or beam (e.g., QCL assumption) for the PDSCH that may be equivalent to the QCL assumption for the CORESET used for PDCCH transmission. The QCL assumption may also be referred to as a receive beam. That is, the QCL assumption may be related to different receive beams for the UE 115-a.

[0145] In some examples, UE 115-a may determine that the time offset period between the receipt of the downlink DCI and the corresponding PDSCH (e.g., PDSCH 210, PDSCH 215) is less than a threshold period (e.g., timeDurationForQCL). UE 115-a may therefore be configured to use a default TCI state. For example, UE 115-a may be configured to use the same QCL as the PDCCH QCL indication of the CORESET associated with the monitored search space, which CORESET has the lowest CORESET identifier in the most recent time slot of one or more CORESETs within the active bandwidth of the serving cell (e.g., base station 105-a, base station 105-b) monitored by UE 115-a. In other examples, UE 115-a may determine that none of the configured TCI states for the serving cell associated with the scheduled PDSCH includes a QCL reference type (e.g., QCL type D). In this way, UE 115 can derive other QCL hypotheses from the indicated TCI state of its scheduled PDSCH regardless of the time offset between the received downlink DCI and the corresponding PDSCH.

[0146] In some examples, the threshold period (e.g., timeDurationForQCL) may include a first period for decoding the DCI (and thus obtaining scheduling information including the TCI field) plus a second period for configuring and switching the receive beam (e.g., for QCL type D) based on the TCI state indicated in the TCI field of the DCI. The default QCL may allow buffering of received samples with a predetermined receive beam (e.g., which may change in different time slots but is known a priori to the UE 115-a based on the synchronization signal set and / or CORESET configuration) if the scheduling offset is less than a threshold (which will be known after decoding the DCI, i.e., K0 / start and length indicator value (SLIV) indicated by the time domain resource allocation (TDRA) field).

[0147] One or more of base station 105-a or base station 105-b may be configured to include in the DCI an indication of a single TCI state (e.g., a single TRP), a first PDSCH scheme (e.g., SDM), a second PDSCH scheme (e.g., FDM), a third PDSCH scheme (e.g., TDM within a time slot), or a fourth PDSCH scheme (e.g., TDM across time slots). In some examples, one or more of base station 105-a or base station 105-b may be configured to include in the DCI a TCI field that may indicate one or more TCI states. In some examples, one or more of base station 105-a or base station 105-b may be configured to: configure UE 115-a to be in one or more of a single TCI state (e.g., a single TRP), a first PDSCH scheme (e.g., SDM), a second PDSCH scheme (e.g., FDM), a third PDSCH scheme (e.g., TDM within a time slot), or a fourth PDSCH scheme (e.g., TDM across time slots) via RRC signaling, and UE 115-a may use one of the above example schemes based on the DCI indication. In addition, UE 115-a may be configured to have two default QCL assumptions for simultaneous reception of two beams (e.g., for SDM and / or FDM). In one example, UE 115-a may be configured with two default QCL assumptions (e.g., two default receive beams). In some examples, UE 115-a may be configured with two default QCL assumptions (e.g., two default receive beams) in each codeword, mini-slot, time slot, etc.

[0148] As an example, UE 115-a may be configured to receive DCI on PDCCH 205. The DCI may include one or more of the following: an indication of a TCI state set associated with a PDSCH (e.g., PDSCH 210, PDSCH 215), one or more receive beams associated with the TCI state set, or a PDSCH scheme. UE 115-a may determine a time period (e.g., T1) for decoding the DCI and, based on the time period, receive the PDSCH according to one or more of the following: the TCI state set, one or more receive beams associated with the TCI state set, the PDSCH scheme, one or more default receive beams, or a default PDSCH scheme. In some examples, UE 115-a may identify a TCI field in the DCI, where the TCI field indicates one or more TCI states in the TCI state set.

[0149] UE 115-a may identify capabilities related to the one or more receive beams and, based on the capabilities, select one or more of the following: the TCI state set, the one or more receive beams associated with the TCI state set, the one or more default receive beams, or a default PDSCH scheme. UE 115-a may include an indication of the time period in the capabilities and transmit the capabilities including the indication of the time period to, for example, base station 105-a and / or base station 105-b.

[0150] In some examples, UE 115-a may determine a second time period (e.g., T2) associated with the one or more receive beams and transmit a second indication of the second time period associated with the one or more receive beams along with the capability. In some examples, the time period (e.g., T1) may be different from the second time period (e.g., T2). The second time period (e.g., T2) may be associated with one or more symbols of a number of symbols used to receive PDCCH 205 and apply spatial QCL information to PDSCH 210. In some examples, the number of symbols may be OFDM symbols. In some examples, UE 115-a may determine a subcarrier spacing based on the capability, and the time period may be based on the subcarrier spacing. In some examples, UE 115-a may determine a number of symbols used to receive PDCCH 205, apply spatial QCL information to PDSCH 210 based on the second time period, and receive PDSCH 210 based on the spatial QCL information.

[0151] In some examples, UE 115-a may determine that the time offset period is greater than or equal to the second time period. The time offset period may be the duration from the end symbol of PDCCH 205 carrying DCI to the start symbol of PDSCH 210, where PDCCH 205 schedules PDSCH 210. In this manner, UE 115-a may receive PDSCH 210 according to one or more of one or more TCI states or PDSCH schemes in the TCI state set based on the time offset period being greater than or equal to the second time period. In other words, UE 115-a may receive PDSCH 210 using the indicated PDSCH scheme and the indicated TCI state(s).

[0152] In some other examples, UE 115-a may determine that the time offset period is greater than or equal to the time period and determine that the time offset period is less than or equal to the second time period. In this way, UE 115-a may receive PDSCH 210 according to one or more of the following: a TCI state set, one or more receive beams associated with the TCI state set, or one or more default receive beams for PDSCH based on one or more of the time offset period being greater than or equal to the time period or the time offset period being less than or equal to the second time period. In other words, UE 115-a may use the indicated PDSCH scheme but use (or default) QCL assumptions for PDSCH 210 reception. The (or default) QCL assumptions may be independent of information in the DCI or may be determined based on the PDSCH scheme and other parameters in the DCI (e.g., the location of transmission opportunities for a TDM scheme).

[0153] In other examples, UE 115-a may determine that the time offset period is less than the time period and may receive PDSCH 210 according to one or more of one or more default receive beams or a default PDSCH scheme for PDSCH based on the time offset period being less than the time period. That is, UE 115-a may use the default PDSCH scheme and (or) default QCL assumptions (e.g., default receive beams) for PDSCH 210 reception. In some examples, the default PDSCH scheme may be a function of a subset of PDSCH schemes with which UE 115-a is configured (e.g., possible schemes that may be indicated by a DCI) or may be a fixed scheme (e.g., SDM, FDM, TDM, or a single TCI state).

[0154] In some examples, UE 115-a may determine that the time offset period is less than a second time period, and receive a first set of data samples according to a first default receive beam among the one or more default receive beams based on the time offset period being less than the second time period, and receive a second set of data samples according to a second default receive beam among the one or more default receive beams based on the time offset period being less than the second time period. UE 115-a may store one or more of the first set of data samples or the second set of data samples based on the time offset period being less than the second time period. The stored first set of data samples or the stored second set of data samples corresponds to the first antenna panel or the second antenna panel. In other words, when the scheduling offset is less than a threshold period (e.g., timeDurationForQCL), UE 115-a may store two sets of samples on two antenna panels using two corresponding default QCL hypotheses (e.g., using two sets of spatial receive beam parameters). In some examples, there is no default scheme (i.e., if T1 is present, the default scheme may be exclusively required). Furthermore, it may not be necessary to actually store the data sample sets (for the indicated PDSCH scheme). It is used to process the data sample set (after decoding the DCI) and decode the PDSCH.

[0155] In some examples, UE 115-a may use both data sample sets for SDM. For example, UE 115-a may process one or more of the first data sample set or the second data sample set based on a PDSCH scheme, where the PDSCH scheme is an SDM scheme. In some other examples, for FDM, UE 115-a may use one data sample set in a first resource block set (corresponding to a first TCI state) and a second sample set in a second resource block set (corresponding to a second TCI state). For example, UE 115-a may process one or more of the first data sample set or the second data sample set based on a PDSCH scheme, where the PDSCH scheme is an FDM scheme. Thus, UE 115-a may process one or more of the first data sample set or the second data sample set by processing the first data sample set in a first resource block set corresponding to a first TCI state among the TCI states and processing the second data sample set in a second resource block set corresponding to a second TCI state among the TCI states.

[0156] In another example, for TDM, UE 115-a may use one sample set in a first set of symbols, time slots, or transmission opportunities (corresponding to a first TCI state) and a second sample set in a second set of symbols, time slots, or transmission opportunities (corresponding to a second TCI state). For example, UE 115-a may process one or more of the first data sample set or the second data sample set based on a PDSCH scheme that is a TDM scheme. UE 115-a may thus process one or more of the first data sample set or the second data sample set by processing the first data sample set in a first TTI set corresponding to a first TCI state among the TCI states and processing the second data sample set in a second TTI set corresponding to a second TCI state among the TCI states.

[0157] In some examples, UE 115-a may use the first set of data samples for a single TCI state (e.g., where the TCI field indicates one TCI state). The TCI state(s) indicated by the TCI field in the DCI may have different QCL(s) than the default QCL assumption. UE 115-a may thus be configured to use a single antenna panel (and therefore one data sample based on the default QCL in a transmission opportunity) for a TDM or single TCI state scheme. However, if UE 115-a is aware of the PDSCH scheme (e.g., knows that it is a single TCI or knows that it is TDM and two or more transmission opportunities (repeated)), then even if the scheduling offset is less than a threshold period (e.g., timeDurationForQCL) and UE 115-a must use the default QCL, UE 115-a may still use two antenna panels per transmission opportunity for reception.

[0158] In some examples, during a PDSCH duration, when an ongoing transmission crosses one or more thresholds (e.g., time boundaries such as symbols, mini-slots, or slots), the default PDSCH scheme or default QCL assumption (e.g., default receive beam) may be changed to the indicated PDSCH scheme or QCL assumption. Examples of changing TCI states across one or more timing boundaries are provided in

[15] . Figure 7 Provide a description.

[0159] Figure 7 An example of a scheme 700 for supporting default QCL for multiple TRPs based on a single DCI according to aspects of the present disclosure is illustrated. The scheme 700 may implement reference to Figure 2Aspects of the wireless communication system 200 described herein. For example, the scheme 700 may be based on configuration by one or more of the base station 105-a, the base station 105-b, or the UE 115-a and implemented by one or more of the base station 105-a, the base station 105-b, or the UE 115-a to reduce power consumption and promote low latency for wireless communications. Figure 2 , one or more of base station 105-a or base station 105-b may transmit control information and / or data to UE 115-a. For example, base station 105-a or one or more of base station 105-b may transmit DCI 705 to UE 115-a. The control information may schedule a PDSCH associated with one or more of base station 105-a or base station 105-b. For example, DCI 705 may schedule a PDSCH 710, or one or more PDSCHs. PDSCH 710 may correspond to one or more DMRS symbols 715.

[0160] exist Figure 7 In the example and refer to Figure 2 , UE 115-a may be configured to receive PDSCH 710 over a duration. The duration may include a transmission opportunity, a TTI. The TTI may include one or more symbols, one or more mini-slots, one or more time slots, or a combination thereof. In some examples, UE 115-a may operate according to one or more of a TCI state set, one or more receive beams associated with the TCI state set, a PDSCH scheme, one or more default receive beams, or a default PDSCH scheme during a first portion of the duration (e.g., time period 720). In other words, UE 115-a may be configured to use a single TCI state (default scheme) and a default QCL assumption during the first portion of the PDSCH 710.

[0161] In some examples, UE 115-a may operate according to one or more of the TCI state set, one or more receive beams associated with the TCI state set, a PDSCH scheme, one or more default receive beams, or a default PDSCH scheme during a second portion of the duration (e.g., time period 725). In other words, UE 115-a may be configured to use, for example, the (indicated) SDM scheme and two default QCL assumptions during the second portion. In some examples, UE 115-a may operate according to one or more of the TCI state set, one or more receive beams associated with the TCI state set, a PDSCH scheme, one or more default receive beams, or a default PDSCH scheme during a third portion of the duration (e.g., time period 730). In other words, UE 115-a may be configured to use the SDM scheme according to the two indicated TCI states during the third portion.

[0162] In some examples, from the first portion (e.g., time period 720) to the second portion (e.g., time period 725), if the default scheme and / or QCL assumption(s) in the first portion are different from the actual scheme and / or QCL assumptions used in the second portion, UE 115-a may assume that DMRS symbol 715 is present in the first symbol of the second portion. That is, UE 115-a may determine the location of the DMRS so that UE 115-a can obtain a channel estimate. For example, UE 115-a may perform channel measurement estimates related to one or more of the PDCCH or PDSCH based on one or more of the TCI state set, one or more receive beams associated with the TCI state set, the PDSCH scheme, one or more default receive beams, or a default PDSCH scheme during the first portion.

[0163] Additionally or alternatively, UE 115-a may perform channel measurement estimation related to one or more of the PDCCH or PDSCH during the second portion based on one or more of the TCI state set, one or more receive beams associated with the TCI state set, a PDSCH scheme, one or more default receive beams, or a default PDSCH scheme. UE 115-a may determine a difference between the first portion and the second portion based on the TCI state set, one or more receive beams associated with the TCI state set, a PDSCH scheme, one or more default receive beams, or a default PDSCH scheme, and determine a reference signal position (e.g., DMRS) in the second portion of the duration based on the difference. In some examples, the reference signal position includes a starting codeword of the second portion of the duration. In some examples, the reference signal position in the second portion of the duration may be based on the length of one or more of the PDCCH (e.g., carrying DCI 705) or the PDSCH 710.

[0164] return Figure 2 In some examples, UE 115-a may be configured to determine one or more default QCL assumptions. Figure 8 Provide a description.

[0165] Figure 8 An example of a scheme 800 for supporting default QCL for multiple TRPs based on a single DCI according to aspects of the present disclosure is illustrated. The scheme 800 may implement a scheme 800 for supporting default QCL for multiple TRPs based on a single DCI according to aspects of the present disclosure. Figure 2Aspects of the described wireless communication system 200. For example, the scheme 800 may be based on configuration by one or more of the base station 105-a, the base station 105-b, or the UE 115-a and implemented by one or more of the base station 105-a, the base station 105-b, or the UE 115-a to reduce power consumption and promote low latency for wireless communications.

[0166] Reference Figure 2 , UE 115-a may be configured to identify a first default receive beam in a default receive beam set based on a CORESET identifier. UE 115-a may receive an indication of a second default receive beam in the default receive beam set and determine the second default receive beam based on the indication. UE 115-a may therefore jointly receive one or more data samples for the PDSCH on the first default receive beam and the second default receive beam. The CORESET identifier may be the lowest CORESET identifier in an ending symbol or an ending slot associated with a transmission opportunity. In some examples, UE 115-a may monitor one or more CORESETs within an active bandwidth portion associated with a serving cell (e.g., base station 105-a, base station 105-b). The CORESET identifier is the lowest CORESET identifier in a most recent symbol or a most recent slot in which a CORESET was monitored within the active bandwidth portion associated with the serving cell. The first default receive beam in the default receive beam set may differ from the second default receive beam in the default receive beam set over one or more time periods.

[0167] In some examples, UE 115-a may receive, for example, in first control signaling from one or more of base station 105-a or base station 105-b, an additional indication of a first default receive beam in the default receive beam set, wherein the first control signaling includes first MAC-CE signaling. Additionally or alternatively, UE 115-a may receive, for example, in second control signaling from one or more of base station 105-a or base station 105-b, an additional indication of a second default receive beam in the default receive beam set, wherein the second control signaling includes second MAC-CE signaling. Alternatively, UE 115-a may receive, for example, in a single control signaling, one or more of an indication of the second default receive beam in the default receive beam set or an additional indication of the first default receive beam in the default receive beam set from one or more of base station 105-a or base station 105-b. Thus, the first default beam may be based on a rule, and the second default beam may be based on a beam pair (indicated by RRC or MAC-CE) having the first TCI state (associated with the first default receive beam) as one of the values in the beam pair. In other words, the second default beam is not based on the second control resource set identifier. Instead, the second default beam is based on the first default beam (based on the first control resource set identifier) and a beam pair list.

[0168] In some examples, the control signaling may include a TCI state pattern indicating one or more TCI states associated with one or more time periods. For example, the control signaling may indicate TCI state 805, TCI state 810, TCI state 815, and / or TCI state 820. The TCI state pattern may correspond to one or more of: a periodicity associated with a TCI state (e.g., TCI state 805, TCI state 810, TCI state 815, and / or TCI state 820), a duration associated with a TCI state (e.g., TCI state 805, TCI state 810, TCI state 815, and / or TCI state 820), or a time offset period associated with a TCI state (e.g., TCI state 805, TCI state 810, TCI state 815, and / or TCI state 820). The one or more time periods may be associated with one or more TTIs, the one or more TTIs including one or more symbols, one or more minislots, one or more slots, or a combination thereof.

[0169] Thus, the first default QCL may be based on the lowest CORESET identifier in the most recent timeslot in which one or more CORESETs within the active bandwidth portion of the serving cell (e.g., base station 105-a, base station 105-b) were monitored by UE 115-a, while the second default QCL is indicated by the MAC-CE. Alternatively, both the first and second default QCL assumptions may be indicated by the MAC-CE.

[0170] Figure 9 An example of a scheme 900 for supporting default QCL for multiple TRPs based on a single DCI according to aspects of the present disclosure is illustrated. The scheme 900 may implement a scheme 900 for supporting default QCL for multiple TRPs based on a single DCI according to aspects of the present disclosure. Figure 2 Aspects of the described wireless communication system 200. For example, the scheme 900 may be based on configuration by one or more of the base station 105-a, the base station 105-b, or the UE 115-a and implemented by one or more of the base station 105-a, the base station 105-b, or the UE 115-a to reduce power consumption and promote low latency for wireless communications.

[0171] Reference Figure 2 , UE 115-a may be configured to identify a first default receive beam in a default receive beam set based on a first CORESET set identifier, and to determine a second default receive beam in a second default receive beam set based on a second CORESET identifier. As a result, UE 115-a may jointly receive one or more data samples for a PDSCH on the first default receive beam and the second default receive beam. The first CORESET identifier may be the first lowest CORESET identifier in an end symbol or end slot associated with a transmission opportunity. The second CORESET identifier may be the second lowest CORESET identifier in an end symbol or end slot associated with the transmission opportunity. Thus, the first CORESET identifier may be different from the second CORESET identifier.

[0172] The first CORESET identifier may correspond to a first TCI state. Similarly, the second CORESET identifier may correspond to a second TCI state different from the first TCI state. In some examples, the UE 115-a may be configured to receive control signaling that includes an indication of a default receive beam pair corresponding to the TCI state pair. The default receive beam set may include the default receive beam pair. The control signaling may include RRC signaling and / or MAC-CE signaling. The UE 115-a may determine a second default receive beam in the default receive beam set based on a first TCI state (e.g., TCI state 905, TCI state 910, TCI state 915) associated with the first default receive beam, the first TCI state being paired with a second TCI state (e.g., TCI state 920, TCI state 925, TCI state 930) associated with the second default receive beam.

[0173] Thus, a first default QCL may be determined based on a lowest CORESET identifier in a most recent timeslot in which one or more CORESETs within the active bandwidth portion of the serving cell were monitored by the UE 115-a. A second default QCL assumption may be based on a second lowest CORESET identifier in a most recent timeslot monitored by the UE 115-a, the second lowest CORESET identifier being different from the first CORESET identifier and having a different TCI state. A set of beam pairs (e.g., TCI state pairs) may also be configured for the UE 115-a (e.g., via RRC signaling) or indicated by MAC-CE signaling (e.g., both beams in a beam pair may be received simultaneously). The first default QCL assumption may be different in different timeslots (e.g., based on a CORESET, synchronization signal set configuration). The second default QCL assumption may be determined based on a TCI state paired with the TCI state determined for the first default QCL assumption (e.g., a TCI state pair given by {(TCI state 905, TCI state 920), (TCI state 910, TCI state 925), (TCI state 915, TCI state 930)}).

[0174] Figure 10 A block diagram 1000 illustrates a device 1005 that supports a default QCL for multiple TRPs based on a single DCI according to aspects of the present disclosure. The device 1005 may be an example of aspects of a UE 115 as described herein. The device 1005 may include a receiver 1010, a UE communication manager 1015, and a transmitter 1020. The device 1005 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0175] 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 default QCLs for multiple TRPs based on a single DCI, 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.

[0176] The UE communication manager 1015 may receive DCI on a PDCCH, the DCI including one or more of: an indication of a TCI state set associated with a PDSCH, one or more receive beams associated with the TCI state set, or a PDSCH scheme; decode the DCI; determine a time period associated with the indication of the TCI state set; and receive the PDSCH based on the time period according to one or more of: the TCI state set, one or more receive beams associated with the TCI state set, the PDSCH scheme, or one or more default receive beams. The UE communication manager 1015 may also identify a first default receive beam in the default receive beam set based on a CORESET identifier; receive an indication of a second default receive beam in the default receive beam set; determine the second default receive beam based on the indication; and jointly receive one or more data samples for the PDSCH on the first default receive beam and the second default receive beam. The UE communication manager 1015 may also identify a first default receive beam in the default receive beam set based on the first CORESET identifier; determine a second default receive beam in the default receive beam set based on the second CORESET identifier; and jointly receive one or more data samples for the PDSCH on the first default receive beam and the second default receive beam. The UE communication manager 1015 may be an example of aspects of the UE communication manager 1310 described herein.

[0177] The UE communication manager 1015 may be implemented as an integrated circuit or chipset for the device 1005, and the receiver 1010 and transmitter 1020 may be implemented as analog components (e.g., amplifiers, filters, antennas) coupled to the device 1005 modem to implement wireless transmission and reception. The actions performed by the UE communication manager 1015 as described herein may be implemented to achieve one or more potential advantages. At least one implementation may enable the UE communication manager 1015 to receive the PDSCH based on a time period associated with a TCI state set. Based on implementing reception, one or more processors of the device 1005 (e.g., processor(s) controlling or incorporating the UE communication manager 1015) may provide improvements in power conservation and, in some examples, spectral efficiency, higher data rates, and enhanced efficiency for high reliability and low latency operation, among other benefits.

[0178] The UE communication manager 1015 or its subcomponents may be implemented in hardware, 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 UE communication manager 1015 or its subcomponents may be performed by a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (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.

[0179] The UE communications manager 1015 or its subcomponents may be physically located in 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 UE communications manager 1015 or its subcomponents may be separate and distinct components. In some examples, according to various aspects of the present disclosure, the UE communications manager 1015 or its subcomponents may 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).

[0180] 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.

[0181] Figure 11 A block diagram 1100 is shown of a device 1105 that supports a default QCL for multiple TRPs based on a single DCI in accordance with aspects of the present disclosure. The device 1105 may be an example of aspects of the device 1005 or UE 115 as described herein. The device 1105 may include a receiver 1110, a UE 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).

[0182] 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 default QCLs for multiple TRPs based on a single DCI, 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.

[0183] The UE communications manager 1115 may be an example of aspects of the UE communications manager 1015 as described herein. The UE communications manager 1115 may include an information component 1120, a timing component 1125, a physical channel component 1130, a beam component 1135, and a sample component 1140. The UE communications manager 1115 may be an example of aspects of the UE communications manager 1310 described herein.

[0184] Information component 1120 may receive DCI on the PDCCH, the DCI including one or more of the following: an indication of a TCI state set associated with the PDSCH, one or more receive beams associated with the TCI state set, or a PDSCH scheme. Information component 1120 may decode the DCI. Timing component 1125 may determine a time period for decoding the DCI. Physical channel component 1130 may receive the PDSCH based on the time period according to one or more of the following: the TCI state set, one or more receive beams associated with the TCI state set, the PDSCH scheme, or one or more default receive beams.

[0185] The beam component 1135 may identify a first default receive beam in the default receive beam set based on the CORESET identifier; receive an indication of a second default receive beam in the default receive beam set; and determine the second default receive beam based on the indication. The sample component 1140 may jointly receive one or more data samples for the PDSCH on the first default receive beam and the second default receive beam. The beam component 1135 may identify a first default receive beam in the default receive beam set based on the first CORESET identifier; determine a second default receive beam in the default receive beam set based on the second CORESET identifier; and jointly receive one or more data samples for the PDSCH on the first default receive beam and the second default receive beam.

[0186] 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.

[0187] Figure 12A block diagram 1200 is shown of a UE communication manager 1205 that supports a default QCL for multiple TRPs based on a single DCI in accordance with aspects of the present disclosure. The UE communication manager 1205 can be an example of aspects of the UE communication manager 1015, the UE communication manager 1115, or the UE communication manager 1310 described herein. The UE communication manager 1205 can include an information component 1210, a timing component 1215, a physical channel component 1220, a capability component 1225, a sample component 1230, a channel component 1235, a beam component 1240, and a resource component 1245. Each of these modules can communicate directly or indirectly with each other (e.g., via one or more buses).

[0188] Information component 1210 may receive DCI on a PDCCH, the DCI including one or more of: an indication of a TCI state set associated with a PDSCH, one or more receive beams associated with a TCI state set, or a PDSCH scheme. Information component 1210 may decode the DCI. In some examples, information component 1210 may apply spatial QCL information to the PDSCH. In some examples, information component 1210 may identify a TCI field in the DCI, where the TCI field indicates one or more TCI states in a TCI state set. In some cases, the DCI may include an indication of a default PDSCH scheme, and the default PDSCH scheme may be based on a preconfigured PDSCH scheme set.

[0189] The timing component 1215 may determine a time period associated with the indication of the TCI state set. In some cases, the timing component 1215 may determine a second time period for decoding the DCI. In some examples, the timing component 1215 may determine a number of symbols for receiving the PDCCH based on the time period. In some examples, the timing component 1215 may determine that the time offset period is greater than or equal to the time period; and receive the PDSCH according to one or more of the one or more TCI states or PDSCH schemes in the TCI state set based on the time offset period being greater than or equal to the time period.

[0190] In some examples, the timing component 1215 may determine that the time offset period is greater than or equal to the second time period. In some examples, the timing component 1215 may determine that the time offset period is less than or equal to the time period; and based on one or more of the time offset period being greater than or equal to the second time period or the time offset period being less than or equal to the time period, receive the PDSCH according to one or more of: a PDSCH scheme, a TCI state set, one or more receive beams associated with the TCI state set, or one or more default receive beams for the PDSCH. In some examples, the timing component 1215 may determine that the time offset period is less than the second time period; and based on the time offset period being less than the second time period, receive the PDSCH according to one or more of: one or more default receive beams or a default PDSCH scheme for the PDSCH.

[0191] In some examples, the timing component 1215 may determine that the time offset period is less than the time period. In some examples, the timing component 1215 may determine a subcarrier spacing based on the capability, wherein determining the second time period is based on the subcarrier spacing. In some cases, the time offset period includes a duration from an end symbol of a PDCCH carrying DCI to a start symbol of a PDSCH, wherein the PDCCH schedules the PDSCH. In some cases, the time period includes a number of symbols.

[0192] The physical channel component 1220 may receive the PDSCH based on the time period according to one or more of the following: a TCI state set, one or more receive beams associated with the TCI state set, a PDSCH scheme, or one or more default receive beams. In some examples, the physical channel component 1220 may receive the PDSCH based on spatial QCL information. In some examples, the physical channel component 1220 may receive the PDSCH over a duration, where the duration includes a transmission opportunity, a TTI, and the TTI includes one or more OFDM symbols, one or more mini-slots, one or more time slots, or a combination thereof. In some cases, the default receive beam may be based on a preconfigured receive beam set (e.g., not indicated in the DCI). In some cases, the PDSCH scheme or default PDSCH scheme includes a TDM scheme, an FDM scheme, an SDM scheme, or a CDM scheme.

[0193] The sample component 1230 may jointly receive one or more data samples for the PDSCH on the first receive beam and the second receive beam. In some examples, the sample component 1230 may receive the first set of data samples according to a first default receive beam among the one or more default receive beams based on a time offset period being less than the time period. In some examples, the sample component 1230 may receive the second set of data samples according to a second default receive beam among the one or more default receive beams based on a time offset period being less than the time period.

[0194] In some examples, sample component 1230 may store one or more of the first data sample set or the second data sample set based on the time offset period being less than the time period, wherein the stored first data sample set or the stored second data sample set corresponds to the first antenna panel or the second antenna panel. In some examples, sample component 1230 may process one or more of the first data sample set or the second data sample set based on a PDSCH scheme, wherein the PDSCH scheme includes an SDM scheme. In some examples, sample component 1230 may process one or more of the first data sample set or the second data sample set based on a TCI state set. In some examples, sample component 1230 may process one or more of the first data sample set or the second data sample set based on a PDSCH scheme, wherein the PDSCH scheme includes an FDM scheme. In some examples, sample component 1230 may process the first data sample set in a first resource block set corresponding to a first TCI state among the TCI states. In some examples, sample component 1230 may process the second data sample set in a second resource block set corresponding to a second TCI state among the TCI states.

[0195] In some examples, the sample component 1230 can process one or more of the first data sample set or the second data sample set based on a PDSCH scheme, wherein the PDSCH scheme includes a TDM scheme. In some examples, the sample component 1230 can process the first data sample set in a first TTI set corresponding to a first TCI state in the TCI states. In some examples, the sample component 1230 can process the second data sample set in a second TTI set corresponding to a second TCI state in the TCI states.

[0196] Beam component 1240 may identify a first default receive beam in the default receive beam set based on the CORESET identifier. In some examples, beam component 1240 may receive an indication of a second default receive beam in the default receive beam set. In some examples, beam component 1240 may determine the second default receive beam based on the indication. In some examples, beam component 1240 may identify the first default receive beam in the default receive beam set based on the first CORESET identifier. In some examples, beam component 1240 may determine the second default receive beam in the default receive beam set based on the second CORESET identifier. In some examples, beam component 1240 may jointly receive one or more data samples for the PDSCH on the first default receive beam and the second default receive beam.

[0197] In some examples, an additional indication of a first default receive beam in the default receive beam set is received in first control signaling, wherein the first control signaling includes first MAC-CE signaling. In some examples, an indication of a second default receive beam in the default receive beam set is received in second control signaling, wherein the second control signaling includes second MAC-CE signaling. In some examples, one or more of an indication of the second default receive beam in the default receive beam set or an additional indication of the first default receive beam in the default receive beam set is received in control signaling, wherein the control signaling includes MAC-CE signaling. In some examples, beam component 1240 may receive control signaling that includes an indication of a default receive beam pair corresponding to a TCI state pair, wherein the default receive beam set includes the default receive beam pair.

[0198] In some examples, beam component 1240 may determine a second default receive beam in the default receive beam set based on a first TCI state associated with a first default receive beam, the first TCI state being paired with a second TCI state associated with the second default receive beam. In some cases, the core set identifier is the lowest core set identifier in a most recent symbol or a most recent slot in which the core set is monitored within an active bandwidth portion associated with the serving cell. In some cases, the control signaling includes a TCI state pattern indicating one or more TCI states associated with one or more time periods. In some cases, the TCI state pattern corresponds to one or more of: a periodicity associated with the TCI state, a duration associated with the TCI state, or a time offset period associated with the TCI state. In some cases, the first default receive beam in the default receive beam set differs from the second default receive beam in the default receive beam set over one or more time periods. In some cases, the one or more time periods relate to one or more time intervals (TTIs), the one or more TTIs comprising one or more symbols, one or more minislots, one or more slots, or a combination thereof.

[0199] In some cases, the first CORESET identifier is the first lowest CORESET identifier in an end symbol or end slot associated with the transmission opportunity. In some cases, the second CORESET identifier is the second lowest CORESET identifier in an end symbol or end slot associated with the transmission opportunity. In some cases, the first CORESET identifier is different from the second CORESET identifier. In some cases, the first CORESET identifier corresponds to a first TCI state. In some cases, the second CORESET identifier corresponds to a second TCI state different from the first TCI state. In some cases, the control signaling includes RRC signaling. In some cases, the control signaling includes MAC-CE signaling.

[0200] Capabilities component 1225 may identify capabilities associated with the one or more receive beams. In some examples, capabilities component 1225 may select one or more of a TCI state set, one or more receive beams associated with the TCI state set, a PDSCH scheme, one or more default receive beams, or a default PDSCH scheme based on the capabilities, wherein receiving the PDSCH is based on the selection. In some examples, capabilities component 1225 may include an indication of the time period in the capabilities. In some examples, capabilities component 1225 may transmit the capabilities carrying the indication of the time period. In some examples, capabilities component 1225 may transmit, along with the capabilities, a second indication of a second time period associated with decoding the DCI.

[0201] In some examples, capability component 1225 may operate according to one or more of the following during a first portion of the duration: a TCI state set, one or more receive beams associated with the TCI state set, a PDSCH scheme, one or more default receive beams, or a default PDSCH scheme. In some examples, capability component 1225 may operate according to one or more of the following during a second portion of the duration: a TCI state set, one or more receive beams associated with the TCI state set, a PDSCH scheme, one or more default receive beams, or a default PDSCH scheme. In some cases, the time period is different from the second time period. In some cases, the second time period is less than the time period. In some cases, the second time period is associated with one or more of a number of symbols used to receive a PDCCH and apply spatial QCL information to the PDSCH.

[0202] The channel component 1235 may perform channel measurement estimation related to one or more of the PDCCH or PDSCH during the first portion based on one or more of the TCI state set, one or more receive beams associated with the TCI state set, the PDSCH scheme, one or more default receive beams, or the default PDSCH scheme. In some examples, the channel component 1235 may perform channel measurement estimation related to one or more of the PDCCH or PDSCH during the second portion based on one or more of the TCI state set, one or more receive beams associated with the TCI state set, the PDSCH scheme, one or more default receive beams, or the default PDSCH scheme. In some examples, the channel component 1235 may determine a difference between the first portion and the second portion based on one or more of the TCI state set, one or more receive beams associated with the TCI state set, the PDSCH scheme, one or more default receive beams, or the default PDSCH scheme. In some examples, the channel component 1235 may determine a reference signal position in the second portion of the duration based on the difference.

[0203] In some examples, channel component 1235 may further determine a reference signal position in the second portion of the duration based on a length of one or more of the PDCCH or the PDSCH. In some examples, channel component 1235 may further determine a reference signal position in the second portion of the duration based on a second time period used to decode the DCI. In some cases, the reference signal position comprises a DMRS position. In some cases, the reference signal position comprises a starting symbol of the second portion of the duration. Resource component 1245 may monitor one or more CORESETs within an active bandwidth portion associated with the serving cell, wherein the CORESET identifier is the lowest CORESET identifier in a most recent symbol or a most recent slot for monitoring the CORESETs within the active bandwidth portion associated with the serving cell.

[0204] Figure 13 A diagram of a system 1300 including a device 1305 that supports a default QCL for multiple TRPs based on a single DCI in accordance with various aspects of the present disclosure is shown. The device 1305 may 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 communications, including components for transmitting and receiving communications, including a UE communications 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).

[0205] The UE communication manager 1310 may receive DCI on a PDCCH, the DCI including one or more of: an indication of a TCI state set associated with a PDSCH, one or more receive beams associated with the TCI state set, or a PDSCH scheme; decode the DCI; determine a time period associated with the indication of the TCI state set; and receive the PDSCH based on the time period according to one or more of: the TCI state set, one or more receive beams associated with the TCI state set, the PDSCH scheme, or one or more default receive beams. The UE communication manager 1310 may also identify a first default receive beam in the default receive beam set based on a CORESET identifier; receive an indication of a second default receive beam in the default receive beam set; determine the second default receive beam based on the indication; and jointly receive one or more data samples for the PDSCH on the first default receive beam and the second default receive beam. The UE communication manager 1310 may also identify a first default receive beam in the default receive beam set based on the first CORESET identifier; determine a second default receive beam in the default receive beam set based on the second CORESET identifier; and jointly receive one or more data samples for the PDSCH on the first default receive beam and the second default receive beam.

[0206] At least one implementation may enable the UE communication manager 1310 to receive the PDSCH based on a time period associated with a TCI state set. Based on the implementation reception, one or more processors of the device 1305 (e.g., processor(s) controlling or incorporating the UE communication manager 1310) may provide improvements to power conservation and, in some examples, spectral efficiency, higher data rates, and enhanced efficiency for high reliability and low latency operation, among other benefits.

[0207] 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 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.

[0208] 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, as well as demodulate packets received from the antenna. In some cases, the device 1305 may include a single antenna 1325. However, in some cases, the device 1305 may have more than one antenna 1325, which may be capable of concurrently transmitting or receiving multiple wireless transmissions.

[0209] Memory 1330 may include random access memory (RAM) and read-only memory (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 I / O system (BIOS), which may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0210] The processor 1340 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, 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., functions or tasks supporting a default QCL for multiple TRPs based on a single DCI).

[0211] 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.

[0212] Figure 14 A flow chart illustrating a method 1400 for supporting a default QCL for multiple TRPs based on a single DCI according to aspects of the present disclosure is shown. The operations of the method 1400 may be implemented by a UE 115 or components thereof as described herein. For example, the operations of the method 1400 may be implemented by a UE 115 or components thereof as described herein. Figures 10 to 13In 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.

[0213] At 1405, the UE may receive DCI on the PDCCH, the DCI including one or more of: an indication of a TCI state set associated with the PDSCH, one or more receive beams associated with the TCI state set, or a PDSCH scheme. The operations of 1405 may be performed according to the methods described herein. In some examples, aspects of the operations of 1405 may be as described with reference to Figures 10 to 13 The described information components are executed.

[0214] At 1410, the UE may decode the DCI. The operations of 1410 may be performed according to the methods described herein. In some examples, aspects of the operations of 1410 may be performed as described with reference to Figures 10 to 13 The described information components are executed.

[0215] At 1415, the UE may determine a time period associated with the indication of the TCI state set. The operations of 1415 may be performed according to the methods described herein. In some examples, aspects of the operations of 1415 may be as described with reference to Figures 10 to 13 The timing components described are executed.

[0216] At 1420, the UE may receive the PDSCH based on the time period according to one or more of: the TCI state set, the one or more receive beams associated with the TCI state set, the PDSCH scheme, or one or more default receive beams. The operations of 1420 may be performed according to the methods described herein. In some examples, aspects of the operations of 1420 may be as described with reference to Figures 10 to 13 The physical channel components described are used to perform the

[0217] Figure 15 A flow chart illustrating a method 1500 for supporting a default QCL for multiple TRPs based on a single DCI according to aspects of the present disclosure is shown. The operations of the method 1500 may be implemented by a UE 115 or components thereof as described herein. For example, the operations of the method 1500 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.

[0218] At 1505, the UE may receive DCI on the PDCCH, the DCI including one or more of: an indication of a TCI state set associated with the PDSCH, one or more receive beams associated with the TCI state set, or a PDSCH scheme. The operations of 1505 may be performed according to the methods described herein. In some examples, aspects of the operations of 1505 may be as described with reference to Figures 10 to 13 The described information components are executed.

[0219] At 1510, the UE may decode the DCI. The operations of 1510 may be performed according to the methods described herein. In some examples, aspects of the operations of 1510 may be as described with reference to Figures 10 to 13 The described information components are executed.

[0220] At 1515, the UE may determine a time period associated with the indication of the TCI state set. The operations of 1515 may be performed according to the methods described herein. In some examples, aspects of the operations of 1515 may be as described with reference to Figures 10 to 13 The timing components described are executed.

[0221] At 1520, the UE may receive the PDSCH based on the time period according to one or more of: the TCI state set, the one or more receive beams associated with the TCI state set, the PDSCH scheme, or one or more default receive beams. The operations of 1520 may be performed according to the methods described herein. In some examples, aspects of the operations of 1520 may be as described with reference to Figures 10 to 13 The physical channel components described are used to perform the

[0222] At 1525, the UE may operate according to one or more of the TCI state set, the one or more receive beams associated with the TCI state set, the PDSCH scheme, one or more default receive beams, or a default PDSCH scheme during the first portion of the duration. The operations of 1525 may be performed according to the methods described herein. In some examples, aspects of the operations of 1525 may be as described with reference to Figures 10 to 13 The described capability components are implemented.

[0223] At 1530, the UE may operate according to one or more of the TCI state set, the one or more receive beams associated with the TCI state set, the PDSCH scheme, one or more default receive beams, or a default PDSCH scheme during the second portion of the duration. The operations of 1530 may be performed according to the methods described herein. In some examples, aspects of the operations of 1530 may be as described with reference to Figures 10 to 13 The described capability components are implemented.

[0224] Figure 16 A flow chart illustrating a method 1600 for supporting a default QCL for multiple TRPs based on a single DCI according to aspects of the present disclosure is shown. The operations of the method 1600 may be implemented by a UE 115 or components thereof as described herein. For example, the operations of the method 1600 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.

[0225] At 1605, the UE may identify a first default receive beam in the default receive beam set based on the CORESET identifier. The operations of 1605 may be performed according to the methods described herein. In some examples, aspects of the operations of 1605 may be performed as described with reference to Figures 10 to 13 The beam assembly described is performed.

[0226] At 1610, the UE may receive an indication of a second default receive beam in the default receive beam set. The operations of 1610 may be performed according to the methods described herein. In some examples, aspects of the operations of 1610 may be performed as described with reference to Figures 10 to 13 The beam assembly described is performed.

[0227] At 1615, the UE may determine the second default receive beam based on the indication. The operations of 1615 may be performed according to the methods described herein. In some examples, aspects of the operations of 1615 may be as described with reference to Figures 10 to 13 The beam assembly described is performed.

[0228] At 1620, the UE may jointly receive one or more data samples for the PDSCH on the first default receive beam and the second default receive beam. The operations of 1620 may be performed according to the methods described herein. In some examples, aspects of the operations of 1620 may be as described with reference to Figures 10 to 13 The sample components described are implemented.

[0229] Figure 17 A flow chart illustrating a method 1700 for supporting a default QCL for multiple TRPs based on a single DCI according to aspects of the present disclosure is shown. The operations of the method 1700 may be implemented by a UE 115 or components thereof as described herein. For example, the operations of the method 1700 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.

[0230] At 1705, the UE may identify a first default receive beam in the default receive beam set based on the first CORESET identifier. The operations of 1705 may be performed according to the methods described herein. In some examples, aspects of the operations of 1705 may be performed as described with reference to Figures 10 to 13 The beam assembly described is performed.

[0231] At 1710, the UE may determine a second default receive beam in the default receive beam set based on a second CORESET identifier. The operations of 1710 may be performed according to the methods described herein. In some examples, aspects of the operations of 1710 may be performed as described with reference to Figures 10 to 13 The beam assembly described is performed.

[0232] At 1715, the UE may jointly receive one or more data samples for the PDSCH on the first default receive beam and the second default receive beam. The operations of 1715 may be performed according to the methods described herein. In some examples, aspects of the operations of 1715 may be as described with reference to Figures 10 to 13 The beam assembly described is performed.

[0233] 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.

[0234] 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.

[0235] 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.

[0236] 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).

[0237] 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.

[0238] Computer-readable media include both non-transient computer storage media and communication media, which include any media that facilitates a computer program to be transferred 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 RAM, ROM, electrically erasable programmable ROM (EEPROM), flash memory, compact disc (CD) ROM or other optical disc storage, magnetic disk storage or other magnetic storage devices, or any other non-transient medium that can be used to carry or store the desired program code means of an instruction or data structure form 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.

[0239] 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."

[0240] 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.

[0241] 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.

[0242] 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 device for wireless communication, comprising: a processor configured to cause the device to: receiving downlink control information (DCI) on a physical downlink control channel (PDCCH), the DCI indicating a physical downlink shared channel (PDSCH) multiplexing scheme and comprising one or more of: an indication of a plurality of transmission configuration indicator (TCI) states associated with PDSCHs from a plurality of transmit reception points (TRPs), or an indication of one or more receive beams associated with the plurality of TCI states, wherein each TCI state in the plurality of TCI states is associated with a different TRP in the plurality of TRPs; decoding the DCI; determining a first time period associated with an indication of the plurality of TCI states and a time offset period associated with the PDSCH from the plurality of TRPs; as well as The PDSCH is received from the multiple TRPs according to the PDSCH multiplexing scheme and one or more of the following: the multiple TCI states, the one or more receive beams associated with the multiple TCI states, or one or more default receive beams based at least in part on the first time period and the time offset period.

2. The device according to claim 1, wherein The processor is further configured to cause the device to: identifying capabilities associated with the one or more receive beams; and selecting one or more of: the plurality of TCI states, the one or more receive beams associated with the plurality of TCI states, the PDSCH multiplexing scheme, or the one or more default receive beams based at least in part on the capabilities, Wherein the processor is configured to cause the device to receive the PDSCH based at least in part on the selection.

3. The apparatus of claim 2, wherein: The processor is further configured to cause the device to: including in the capability an indication of the first time period; and The capability is transmitted carrying an indication of the first time period.

4. The apparatus of claim 3, wherein: The processor is further configured to cause the device to: Identify the TCI field in the DCI, The TCI field indicates one or more TCI states among the multiple TCI states.

5. The apparatus of claim 4, wherein: The processor is further configured to cause the device to: determining that the time offset period is greater than or equal to the first time period; and The PDSCH is received according to one or more of the one or more of the plurality of TCI states or the PDSCH multiplexing scheme based at least in part on the time offset period being greater than or equal to the first time period.

6. The apparatus of claim 5, wherein: The time offset period includes a duration from an end symbol of the PDCCH carrying the DCI to a start symbol of the PDSCH, wherein the PDCCH schedules the PDSCH.

7. The apparatus of claim 4, wherein: The processor is further configured to cause the device to: determining that the time offset period is less than the first time period; receiving a first set of data samples according to one or more of the one or more default receive beams or the PDSCH multiplexing scheme based at least in part on the time offset period being less than the first time period; as well as A second set of data samples is received according to one or more of the one or more default receive beams or the PDSCH multiplexing scheme based at least in part on the time offset period being less than the first time period.

8. The apparatus of claim 7, wherein: The processor is further configured to cause the device to: One or more of the first set of data samples or the second set of data samples is stored based at least in part on the time offset period being less than the first time period, wherein the stored set of first data samples or the stored set of second data samples corresponds to a first antenna panel or a second antenna panel.

9. The apparatus of claim 7, wherein: The processor is further configured to cause the device to: One or more of the first set of data samples or the second set of data samples are processed based at least in part on the PDSCH multiplexing scheme, wherein the PDSCH multiplexing scheme comprises a spatial division multiplexing scheme.

10. The apparatus of claim 7, wherein: The processor is further configured to cause the device to: One or more of the first set of data samples or the second set of data samples are processed based at least in part on the plurality of TCI states.

11. The apparatus of claim 7, wherein: The processor is further configured to cause the device to: processing one or more of the first set of data samples or the second set of data samples based at least in part on the PDSCH multiplexing scheme, wherein the PDSCH multiplexing scheme comprises a frequency division multiplexing scheme; processing the first set of data samples in a first set of resource blocks corresponding to a first TCI state among the plurality of TCI states; as well as The second set of data samples is processed in a second set of resource blocks corresponding to a second TCI state of the plurality of TCI states.

12. The apparatus of claim 7, wherein: The processor is further configured to cause the device to: processing one or more of the first set of data samples or the second set of data samples based at least in part on the PDSCH multiplexing scheme, wherein the PDSCH multiplexing scheme comprises a time division multiplexing scheme; processing the first set of data samples in a first transmission time interval corresponding to a first TCI state among the plurality of TCI states; as well as The second set of data samples is processed in a second transmission time interval corresponding to a second TCI state among the plurality of TCI states.

13. The apparatus of claim 3, wherein: The processor is further configured to cause the device to: determining a second time period for decoding the DCI; and A second indication of the second time period for decoding the DCI is transmitted along with the capability.

14. The apparatus of claim 13, wherein: The first time period is different from the second time period.

15. The apparatus of claim 14, wherein: The second time period is shorter than the first time period.

16. The apparatus of claim 15, wherein: The processor is further configured to cause the device to: Determining that the time offset period is greater than or equal to the second time period; determining that the time offset period is less than or equal to the first time period; and The PDSCH is received according to the PDSCH multiplexing scheme for the PDSCH and the one or more default receive beams based at least in part on the time offset period being greater than or equal to the second time period and the time offset period being less than or equal to the first time period.

17. The apparatus of claim 15, wherein: The processor is further configured to cause the device to: determining that the time offset period is less than the second time period; and The PDSCH is received according to the one or more default receive beams and a default PDSCH multiplexing scheme based at least in part on the time offset period being less than the second time period.

18. The apparatus of claim 17, wherein: The default PDSCH multiplexing scheme is based at least in part on a preconfigured set of PDSCH multiplexing schemes.

19. The apparatus of claim 13, wherein: The second time period includes a number of symbols.

20. The apparatus of claim 13, wherein: The processor is further configured to cause the device to: A subcarrier spacing is determined based at least in part on the capability, wherein the second time period is determined based at least in part on the subcarrier spacing.

21. The apparatus of claim 1, wherein: The first time period is related to one or more symbols among a number of symbols used to receive the PDCCH and apply spatial quasi co-location information to the PDSCH.

22. The apparatus of claim 1, wherein: The processor is further configured to cause the device to: determining a number of symbols for receiving the PDCCH based at least in part on the first time period; Applying spatial quasi co-location information to the PDSCH; and The PDSCH is received based at least in part on the spatial quasi-co-location information.

23. The apparatus of claim 1, wherein: The one or more default receive beams are based at least in part on a preconfigured receive beam set.

24. The apparatus of claim 1, wherein: The PDSCH multiplexing scheme includes a single TCI state scheme, a time division multiplexing scheme, a frequency division multiplexing scheme, a space division multiplexing scheme, or a code division multiplexing scheme.

25. The apparatus of claim 1, wherein The processor is further configured to cause the device to: The PDSCH is received over a duration, wherein the duration includes a transmission opportunity, a transmission time interval, and the transmission time interval includes one or more orthogonal frequency division multiplexing symbols, one or more mini-slots, one or more slots, or a combination thereof.

26. A method for wireless communication, comprising: receiving downlink control information (DCI) on a physical downlink control channel (PDCCH), the DCI indicating a physical downlink shared channel (PDSCH) multiplexing scheme and comprising one or more of: an indication of a plurality of transmission configuration indicator (TCI) states associated with PDSCHs from a plurality of transmit reception points (TRPs), or an indication of one or more receive beams associated with the plurality of TCI states, wherein each TCI state in the plurality of TCI states is associated with a different TRP in the plurality of TRPs; decoding the DCI; determining a first time period associated with an indication of the plurality of TCI states and a time offset period associated with the PDSCH from the plurality of TRPs; as well as The PDSCH is received from the multiple TRPs according to the PDSCH multiplexing scheme and one or more of the following: the multiple TCI states, the one or more receive beams associated with the multiple TCI states, or one or more default receive beams based at least in part on the first time period and the time offset period.

27. The method of claim 26, further comprising: identifying capabilities associated with the one or more receive beams; as well as selecting one or more of: the plurality of TCI states, the one or more receive beams associated with the plurality of TCI states, the PDSCH multiplexing scheme, or the one or more default receive beams based at least in part on the capabilities, Wherein receiving the PDSCH is based at least in part on the selection.

28. The method of claim 27, further comprising: including in the capability an indication of the first time period; as well as The capability is transmitted carrying an indication of the first time period.

29. The method of claim 28, further comprising: Identify the TCI field in the DCI, The TCI field indicates one or more TCI states among the multiple TCI states.

30. The method of claim 29, further comprising: Determining that the time offset period is greater than or equal to the first time period, wherein receiving the PDSCH includes: The PDSCH is received according to one or more of the one or more of the plurality of TCI states or the PDSCH multiplexing scheme based at least in part on the time offset period being greater than or equal to the first time period.

31. The method of claim 30, wherein: The time offset period includes a duration from an end symbol of the PDCCH carrying the DCI to a start symbol of the PDSCH, wherein the PDCCH schedules the PDSCH.

32. The method of claim 29, further comprising: determining that the time offset period is less than the first time period; receiving a first set of data samples according to one or more of the one or more default receive beams or the PDSCH multiplexing scheme based at least in part on the time offset period being less than the first time period; as well as A second set of data samples is received according to one or more of the one or more default receive beams or the PDSCH multiplexing scheme based at least in part on the time offset period being less than the first time period.

33. The method of claim 32, further comprising: One or more of the first set of data samples or the second set of data samples is stored based at least in part on the time offset period being less than the first time period, wherein the stored set of first data samples or the stored set of second data samples corresponds to a first antenna panel or a second antenna panel.

34. The method of claim 32, further comprising: One or more of the first set of data samples or the second set of data samples are processed based at least in part on the PDSCH multiplexing scheme, wherein the PDSCH multiplexing scheme comprises a spatial division multiplexing scheme.

35. The method of claim 32, further comprising: One or more of the first set of data samples or the second set of data samples are processed based at least in part on the plurality of TCI states.

36. The method of claim 32, further comprising: processing one or more of the first set of data samples or the second set of data samples based at least in part on the PDSCH multiplexing scheme, wherein the PDSCH multiplexing scheme comprises a frequency division multiplexing scheme, wherein processing one or more of the first set of data samples or the second set of data samples comprises: processing the first set of data samples in a first set of resource blocks corresponding to a first TCI state of the plurality of TCI states; and The second set of data samples is processed in a second set of resource blocks corresponding to a second TCI state of the plurality of TCI states.

37. The method of claim 32, further comprising: processing one or more of the first set of data samples or the second set of data samples based at least in part on the PDSCH multiplexing scheme, wherein the PDSCH multiplexing scheme comprises a time division multiplexing scheme, wherein processing one or more of the first set of data samples or the second set of data samples comprises: processing the first set of data samples in a first transmission time interval corresponding to a first TCI state among the plurality of TCI states; and The second set of data samples is processed in a second transmission time interval corresponding to a second TCI state among the plurality of TCI states.

38. The method of claim 28, further comprising: determining a second time period for decoding the DCI; as well as A second indication of the second time period for decoding the DCI is transmitted along with the capability.

39. The method of claim 38, wherein The first time period is different from the second time period.

40. The method of claim 39, wherein The second time period is shorter than the first time period.

41. The method of claim 40, further comprising: Determining that the time offset period is greater than or equal to the second time period; Determining that the time offset period is less than or equal to the first time period; as well as The PDSCH is received according to the PDSCH multiplexing scheme for the PDSCH and the one or more default receive beams based at least in part on the time offset period being greater than or equal to the second time period and the time offset period being less than or equal to the first time period.

42. The method of claim 40, further comprising: determining that the time offset period is less than the second time period; as well as The PDSCH is received according to the one or more default receive beams and a default PDSCH multiplexing scheme based at least in part on the time offset period being less than the second time period.

43. The method of claim 42, wherein the default PDSCH multiplexing scheme is based at least in part on a preconfigured set of PDSCH multiplexing schemes.

44. The method of claim 38, wherein The second time period includes a number of symbols.

45. The method of claim 38, further comprising: A subcarrier spacing is determined based at least in part on the capability, wherein the second time period is determined based at least in part on the subcarrier spacing.

46. The method of claim 26, wherein: The first time period is related to one or more symbols among a number of symbols used to receive the PDCCH and apply spatial quasi co-location information to the PDSCH.

47. The method of claim 26, further comprising: determining a number of symbols for receiving the PDCCH based at least in part on the first time period; Applying spatial quasi-co-location information to the PDSCH; as well as The PDSCH is received based at least in part on the spatial quasi-co-location information.

48. The method of claim 26, wherein The one or more default receive beams are based at least in part on a preconfigured receive beam set.

49. The method of claim 26, wherein The PDSCH multiplexing scheme includes a single TCI state scheme, a time division multiplexing scheme, a frequency division multiplexing scheme, a space division multiplexing scheme, or a code division multiplexing scheme.

50. The method of claim 26, further comprising: The PDSCH is received over a duration, wherein the duration includes a transmission opportunity, a transmission time interval, and the transmission time interval includes one or more orthogonal frequency division multiplexing symbols, one or more mini-slots, one or more slots, or a combination thereof.

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