VERIFICATION OF RESOURCES ASSOCIATED WITH ITERATIVELY BASED LINKED DOWNLINK CONTROL CHANNEL CANDIDATES - Patent application

Abstract

Methods, systems, and devices for wireless communication are described. In general, the described techniques provide for a user equipment (UE) receiving an indication from a base station that first and second downlink control channel candidates are linked for repetition. The UE may decode downlink control information (DCI) from one or both candidates. The DCI may schedule a shared channel resource in the same transmission time interval as at least one of the candidates, or the DCI may include a channel state information request associated with a reference signal resource that is placed in the same transmission time interval as one or both candidates. The UE may apply a rule to determine that the downlink shared channel resource, or the reference signal resource and the downlink control channel candidate are validly placed. The UE may communicate (e.g., receive a downlink message or transmit a report) based on the application of the rule.

Description

[Technical field]

[0001] cross reference This patent application claims priority to U.S. patent application Ser. No. 17 / 574,289, entitled “VERIFYING RESOURCES ASSOCIATED WITH REPETITION-BASED LINKED DOWNLINK CONTROL CHANNEL CANDIDATES,” filed Jan. 12, 2022, which claims the benefit of U.S. Provisional Patent Application Ser. No. 63 / 162,473, entitled “VERIFYING RESOURCES ASSOCIATED WITH REPETITION-BASED LINKED DOWNLINK CONTROL CHANNEL CANDIDATES,” filed Mar. 17, 2021, by KHOSHNEVISAN et al., which is assigned to the assignee of this application.

[0002] The following relates to wireless communications, including validating resources associated with repetition-based linked downlink control channel candidates. [Background technology]

[0003] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, broadcasts, and the like. These systems may be capable of supporting 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), LTE-Advanced (LTE-A) or LTE-A Pro systems, and fifth generation (5G) systems, sometimes referred to as New Radio (NR) systems. These systems may employ technologies such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal FDMA (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 simultaneously supporting communication for multiple communication devices, which may be known as user equipment (UE) in some cases.

[0004] The various channel and signal resources that a UE should use to communicate in a wireless communication system may be assigned by a base station. Due to processing complexity, interference, and other considerations, the location of such resources relative to other resources may affect the reliability and efficiency of communications. Summary of the Invention [Means for solving the problem]

[0005] The described techniques relate to improved methods, systems, devices, and apparatuses that support validation of resources associated with repetition-based linked downlink control channel candidates. In general, the described techniques provide for a user equipment (UE) receiving an indication from a base station that a first and a second downlink control channel candidate are linked. The first downlink control channel candidate may be received, at least in part, before the second downlink control channel candidate. The UE may decode downlink control information (DCI) from one or both candidates. The DCI may schedule a downlink shared channel resource in the same transmission time interval as at least one of the candidates, or the DCI may include a channel state information request associated with a reference signal resource that is placed in the same transmission time interval as one or both candidates. The UE may apply a validation rule to determine that the downlink shared channel resource and the downlink control channel candidate are validly placed, or to determine that the reference signal resource and the downlink control channel candidate are validly placed. The UE may communicate (e.g., receive a downlink message or transmit a channel state information report) based on the validation rule being satisfied.

[0006] A method for wireless communication in a user equipment (UE) is described. The method may include receiving an indication from a base station that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, where the first downlink control channel candidate is received, at least in part, before the second downlink control channel candidate, decoding downlink control information from at least one of the first downlink control channel candidate or the second downlink control channel candidate, where the downlink control information schedules resources of a downlink shared channel in a transmission time interval including at least the second downlink control channel candidate, and receiving a downlink message at the resource based on a confirmation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied, where the confirmation rule is that at least one of the first downlink control channel candidate or the second downlink control channel candidate is within a threshold number of symbols at a start of the transmission time interval in which the resource is scheduled.

[0007] An apparatus for wireless communication in a UE is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to: receive an indication from a base station that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, where the first downlink control channel candidate is received, at least in part, before the second downlink control channel candidate; decode downlink control information from at least one of the first downlink control channel candidate or the second downlink control channel candidate, where the downlink control information schedules resources of a downlink shared channel in a transmission time interval that includes at least the second downlink control channel candidate; and receive a downlink message at the resource based on a validation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied, where the validation rule is that at least one of the first downlink control channel candidate or the second downlink control channel candidate is within a threshold number of symbols at a start of the transmission time interval in which the resource is scheduled.

[0008] Another apparatus for wireless communications in a UE is described. The apparatus may include means for receiving an indication from a base station that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, where the first downlink control channel candidate is received at least in part before the second downlink control channel candidate, means for decoding downlink control information from at least one of the first downlink control channel candidate or the second downlink control channel candidate, where the downlink control information schedules resources of a downlink shared channel in a transmission time interval that includes at least the second downlink control channel candidate, and means for receiving a downlink message at the resource based on a validation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied, where the validation rule is that at least one of the first downlink control channel candidate or the second downlink control channel candidate is within a threshold number of symbols at a start of the transmission time interval in which the resource is scheduled.

[0009] A non-transitory computer-readable medium that stores code for wireless communication in a UE is described. The code may include instructions executable by a processor to: receive an indication from a base station that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, where the first downlink control channel candidate is received, at least in part, before the second downlink control channel candidate; decode downlink control information from at least one of the first downlink control channel candidate or the second downlink control channel candidate, where the downlink control information schedules resources of a downlink shared channel in a transmission time interval that includes at least the second downlink control channel candidate; and receive a downlink message at the resource based on a validation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied, where the validation rule is that at least one of the first downlink control channel candidate or the second downlink control channel candidate is within a threshold number of symbols at a start of the transmission time interval in which the resource is scheduled.

[0010] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the transmission time interval may be a second transmission time interval, and the methods, apparatus, and non-transitory computer-readable media may include further operations, features, means, or instructions for determining that the first downlink control channel candidate may be located within a first transmission time interval that precedes a second transmission time interval that includes the second downlink control channel candidate and resource, and verifying that a validation rule may be satisfied by the second downlink control channel candidate being located within a threshold number of symbols of the second transmission time interval based on determining that the first downlink control channel candidate may be located within the first transmission time interval.

[0011] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for determining that both the first downlink control channel candidate and the second downlink control channel candidate may be located within a transmission time interval in which resources may be scheduled, and a confirmation rule may be applicable based on the first downlink control channel candidate and the second downlink control channel candidate being located within the transmission time interval.

[0012] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the verifying may include operations, features, means, or instructions for verifying that a validation rule may be satisfied by both the first downlink control channel candidate and the second downlink control channel candidate being located within a threshold number of symbols of the transmission time interval based on determining that both the first downlink control channel candidate and the second downlink control channel candidate may be located within the transmission time interval.

[0013] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the verifying may include operations, features, means, or instructions for verifying that a validation rule may be satisfied by at least one of the first downlink control channel candidate and the second downlink control channel candidate being located within a threshold number of symbols of the transmission time interval based on determining that both the first downlink control channel candidate and the second downlink control channel candidate may be located within the transmission time interval.

[0014] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for determining that the downlink control information schedules resources of the downlink shared channel using Type A resource mapping, and the confirmation rule may be applicable based on the downlink control information scheduling resources using Type A resource mapping.

[0015] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving an indication may include receiving an indication via a radio resource control message that the first search space set and the second search space set may be linked, and the first downlink control channel candidate and the second downlink control channel candidate may be linked based on the first search space set and the second search space set being linked.

[0016] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the threshold number of symbols may be three.

[0017] A method for wireless communications in a UE is described. The method may include receiving an indication from a base station that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, where the first downlink control channel candidate is received, at least in part, before the second downlink control channel candidate, decoding downlink control information from at least one of the first downlink control channel candidate or the second downlink control channel candidate, where the downlink control information includes a channel state information request, and transmitting a channel state information report to the base station based on a validation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied, where the validation rule is that a reference signal resource associated with the channel state information request is located after at least a starting symbol of the first downlink control channel candidate.

[0018] An apparatus for wireless communication in a UE is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to: receive an indication from a base station that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, where the first downlink control channel candidate is received, at least in part, before the second downlink control channel candidate; decode downlink control information from at least one of the first downlink control channel candidate or the second downlink control channel candidate, where the downlink control information includes a channel state information request; and transmit a channel state information report to the base station based on a validation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied, where the validation rule is that a reference signal resource associated with the channel state information request is located after at least a starting symbol of the first downlink control channel candidate.

[0019] Another apparatus for wireless communications in a UE is described. The apparatus may include means for receiving from a base station an indication that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, where the first downlink control channel candidate is received, at least in part, before the second downlink control channel candidate, means for decoding downlink control information from at least one of the first downlink control channel candidate or the second downlink control channel candidate, where the downlink control information includes a channel state information request, and means for transmitting a channel state information report to the base station based on a validation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied, where the validation rule is that a reference signal resource associated with the channel state information request is located after at least a starting symbol of the first downlink control channel candidate.

[0020] A non-transitory computer-readable medium storing code for wireless communication in a UE is described, the code may include instructions executable by a processor to: receive an indication from a base station that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, the first downlink control channel candidate being received, at least in part, before the second downlink control channel candidate; decode downlink control information from at least one of the first downlink control channel candidate or the second downlink control channel candidate, the downlink control information including a channel state information request; and transmit a channel state information report to the base station based on a validation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied, the validation rule being that a reference signal resource associated with the channel state information request is located after at least a starting symbol of the first downlink control channel candidate.

[0021] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, verifying that a confirmation rule can be satisfied based on the first downlink control channel candidate and the second downlink control channel candidate being linked, where the reference signal resource is located after the starting symbol of the second downlink control channel candidate.

[0022] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, verifying that a confirmation rule can be satisfied by linking a first downlink control channel candidate and a second downlink control channel candidate, and based on the first downlink control channel candidate being received before the second downlink control channel candidate, the reference signal resource being located after the starting symbol of only the first downlink control channel candidate.

[0023] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving an indication may include receiving an indication via a radio resource control message that the first search space set and the second search space set may be linked, and the first downlink control channel candidate and the second downlink control channel candidate may be linked based on the first search space set and the second search space set being linked.

[0024] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for determining reference signal resources based on a channel state information request included in the downlink control information.

[0025] A method for wireless communication in a base station is described. The method may include transmitting an indication to a UE that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, where the first downlink control channel candidate is transmitted, at least in part, before the second downlink control channel candidate, transmitting downlink control information to the UE via the first downlink control channel candidate and the second downlink control channel candidate, scheduling resources of a downlink shared channel in a transmission time interval that includes at least the second downlink control channel candidate, and transmitting a downlink message on the resource based on a confirmation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied, where the confirmation rule is that at least one of the first downlink control channel candidate or the second downlink control channel candidate is within a threshold number of symbols at a start of the transmission time interval in which the resource is scheduled.

[0026] An apparatus for wireless communication in a base station is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to: transmit an indication to the UE that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, where the first downlink control channel candidate is transmitted, at least in part, before the second downlink control channel candidate; transmit downlink control information to the UE via the first downlink control channel candidate and the second downlink control channel candidate, scheduling resources of the downlink shared channel in a transmission time interval that includes at least the second downlink control channel candidate; and transmit a downlink message on the resources based on a confirmation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied, where the confirmation rule is that at least one of the first downlink control channel candidate or the second downlink control channel candidate is within a threshold number of symbols at a start of the transmission time interval in which the resource is scheduled.

[0027] Another apparatus for wireless communications in a base station is described. The apparatus may include means for transmitting an indication to a UE that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, where the first downlink control channel candidate is transmitted, at least in part, before the second downlink control channel candidate, means for transmitting downlink control information to the UE via the first downlink control channel candidate and the second downlink control channel candidate, scheduling resources of a downlink shared channel in a transmission time interval that includes at least the second downlink control channel candidate, and means for transmitting a downlink message on the resource based on a confirmation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied, where the confirmation rule is that at least one of the first downlink control channel candidate or the second downlink control channel candidate is within a threshold number of symbols at a start of the transmission time interval in which the resource is scheduled.

[0028] A non-transitory computer-readable medium storing code for wireless communications in a base station is described, the code may include instructions executable by a processor to: transmit an indication to a UE that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, the first downlink control channel candidate being transmitted, at least in part, before the second downlink control channel candidate; transmit downlink control information to the UE via the first downlink control channel candidate and the second downlink control channel candidate, scheduling resources of a downlink shared channel in a transmission time interval that includes at least the second downlink control channel candidate; and transmit a downlink message on the resource based on a confirmation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied, the confirmation rule being that at least one of the first downlink control channel candidate or the second downlink control channel candidate is within a threshold number of symbols at a start of the transmission time interval in which the resource is scheduled.

[0029] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the transmission time interval may be a second transmission time interval, and the methods, apparatus, and non-transitory computer-readable media may include further operations, features, means, or instructions for determining that the first downlink control channel candidate may be located within a first transmission time interval that precedes a second transmission time interval that includes the second downlink control channel candidate and resource, and verifying that a validation rule may be satisfied by the second downlink control channel candidate being located within a threshold number of symbols of the second transmission time interval based on determining that the first downlink control channel candidate may be located within the first transmission time interval.

[0030] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for determining that both the first downlink control channel candidate and the second downlink control channel candidate may be located within a transmission time interval in which resources may be scheduled, and a confirmation rule may be applicable based on the first downlink control channel candidate and the second downlink control channel candidate being located within the transmission time interval.

[0031] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the verifying may include operations, features, means, or instructions for verifying that a validation rule may be satisfied by both the first downlink control channel candidate and the second downlink control channel candidate being located within a threshold number of symbols of the transmission time interval based on determining that both the first downlink control channel candidate and the second downlink control channel candidate may be located within the transmission time interval.

[0032] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the verifying may include operations, features, means, or instructions for verifying that a validation rule may be satisfied by at least one of the first downlink control channel candidate and the second downlink control channel candidate being located within a threshold number of symbols of the transmission time interval based on determining that both the first downlink control channel candidate and the second downlink control channel candidate may be located within the transmission time interval.

[0033] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, transmitting the downlink control information may be transmitting downlink control information that schedules resources of a downlink shared channel using Type A resource mapping, and the confirmation rule may include operations, features, means, or instructions for transmitting that may be applicable based on the downlink control information scheduling resources using Type A resource mapping.

[0034] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, transmitting an indication may include transmitting an indication via a radio resource control message that the first search space set and the second search space set may be linked, and may include operations, features, means, or instructions for transmitting that the first downlink control channel candidate and the second downlink control channel candidate may be linked based on the first search space set and the second search space set being linked.

[0035] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the threshold number of symbols may be three.

[0036] A method for wireless communication in a base station is described. The method may include transmitting, to a UE, an indication that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, where the first downlink control channel candidate is transmitted, at least in part, before the second downlink control channel candidate, transmitting downlink control information to the UE via the first downlink control channel candidate and the second downlink control channel candidate, the downlink control information including a channel state information request, and receiving from the UE a channel state information report based on a confirmation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied, where the confirmation rule is that a reference signal resource associated with the channel state information request is located at least after a starting symbol of the first downlink control channel candidate.

[0037] An apparatus for wireless communication in a base station is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to: transmit an indication to a UE that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, where the first downlink control channel candidate is transmitted, at least in part, before the second downlink control channel candidate; transmit downlink control information to the UE via the first downlink control channel candidate and the second downlink control channel candidate, the downlink control information including a channel state information request; and receive a channel state information report from the UE based on a confirmation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied, where the confirmation rule is that a reference signal resource associated with the channel state information request is disposed after at least a starting symbol of the first downlink control channel candidate.

[0038] Another apparatus for wireless communications in a base station is described. The apparatus may include means for transmitting, to a UE, an indication that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, where the first downlink control channel candidate is transmitted at least in part before the second downlink control channel candidate, means for transmitting downlink control information to the UE via the first downlink control channel candidate and the second downlink control channel candidate, where the downlink control information includes a channel state information request, and means for receiving from the UE a channel state information report based on a validation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied, where the validation rule is that a reference signal resource associated with the channel state information request is located after at least a starting symbol of the first downlink control channel candidate.

[0039] A non-transitory computer-readable medium storing code for wireless communications in a base station is described, the code may include instructions executable by a processor to: transmit an indication to a UE that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, the first downlink control channel candidate being transmitted, at least in part, before the second downlink control channel candidate; transmit downlink control information to the UE via the first downlink control channel candidate and the second downlink control channel candidate, the downlink control information including a channel state information request; and receive a channel state information report from the UE based on a validation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied, the validation rule being that a reference signal resource associated with the channel state information request is located at least after a starting symbol of the first downlink control channel candidate.

[0040] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for verifying that a validation rule may be satisfied based on the first downlink control channel candidate and the second downlink control channel candidate being linked, where the reference signal resource is located after the starting symbol of the second downlink control channel candidate.

[0041] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, verifying that a confirmation rule can be satisfied by linking a first downlink control channel candidate and a second downlink control channel candidate, and based on the first downlink control channel candidate being transmitted before the second downlink control channel candidate, the reference signal resource being located after the starting symbol of only the first downlink control channel candidate.

[0042] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, transmitting an indication may include transmitting an indication via a radio resource control message that the first search space set and the second search space set may be linked, and may include operations, features, means, or instructions for transmitting that the first downlink control channel candidate and the second downlink control channel candidate may be linked based on the first search space set and the second search space set being linked.

[0043] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for indicating a reference signal resource based on a channel state information request included in the downlink control information. [Brief description of the drawings]

[0044] [Figure 1] FIG. 1 illustrates an example of a wireless communication system that supports validation of resources associated with repetition-based linked downlink control channel candidates, according to aspects of the present disclosure. [Diagram 2] FIG. 1 illustrates an example of a wireless communication system that supports validation of resources associated with repetition-based linked downlink control channel candidates, according to aspects of the present disclosure. [Figure 3A] FIG. 11 illustrates an example resource diagram illustrating validating resources associated with repetition-based linked downlink control channel candidates, according to an aspect of the disclosure. [Figure 3B] FIG. 11 illustrates an example resource diagram illustrating validating resources associated with repetition-based linked downlink control channel candidates, according to an aspect of the disclosure. [Figure 4] FIG. 1 illustrates an example of a resource diagram illustrating validation of resources associated with repetition-based linked downlink control channel candidates, according to an aspect of the disclosure. [Diagram 5] FIG. 1 illustrates an example of a process flow diagram that supports validation of resources associated with repetition-based linked downlink control channel candidates, according to aspects of the disclosure. [Figure 6] FIG. 13 is a block diagram of a device that supports validation of resources associated with repetition-based linked downlink control channel candidates according to an aspect of the disclosure. [Figure 7] FIG. 13 is a block diagram of a device that supports validation of resources associated with repetition-based linked downlink control channel candidates according to an aspect of the disclosure. [Figure 8] 1 is a block diagram of a communications manager that supports validation of resources associated with repetition-based linked downlink control channel candidates according to an aspect of the disclosure. [Figure 9] FIG. 1 is a diagram of a system including a device that supports validation of resources associated with repetition-based linked downlink control channel candidates according to an aspect of the disclosure. [Figure 10] FIG. 13 is a block diagram of a device that supports validation of resources associated with repetition-based linked downlink control channel candidates according to an aspect of the disclosure. [Figure 11] FIG. 13 is a block diagram of a device that supports validation of resources associated with repetition-based linked downlink control channel candidates according to an aspect of the disclosure. [Figure 12] 1 is a block diagram of a communications manager that supports validation of resources associated with repetition-based linked downlink control channel candidates according to an aspect of the disclosure. [Figure 13] FIG. 1 is a diagram of a system including a device that supports validation of resources associated with repetition-based linked downlink control channel candidates according to an aspect of the disclosure. [Figure 14] 1 is a flowchart illustrating a method for supporting validation of resources associated with repetition-based linked downlink control channel candidates according to an aspect of the disclosure. [Figure 15] 1 is a flowchart illustrating a method for supporting validation of resources associated with repetition-based linked downlink control channel candidates according to an aspect of the disclosure. [Figure 16] 1 is a flowchart illustrating a method for supporting validation of resources associated with repetition-based linked downlink control channel candidates according to an aspect of the disclosure. [Figure 17] 1 is a flowchart illustrating a method for supporting validation of resources associated with repetition-based linked downlink control channel candidates according to an aspect of the disclosure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0045] Resources of various channels and signals that a user equipment (UE) should use for communication in a wireless communication system may be assigned by a base station. Due to processing complexity, interference, and other considerations, the location of such resources relative to other resources may affect the reliability and efficiency of communication. In some cases, a base station may configure a UE with resources of a physical downlink shared channel (PDSCH) with a certain resource mapping type (e.g., mapping type A). Due to various considerations, a physical downlink control channel (PDCCH) that schedules a PDSCH in the same slot of a PDCCH is not expected to schedule a PDSCH with type A mapping if the PDCCH is not received within some threshold number of symbols of the slot. That is, a PDSCH with type A mapping may be scheduled in the same slot of a scheduling PDCCH if the scheduling PDCCH is included within the first three symbols of the slot.

[0046] Another resource consideration scenario concerns channel state information (CSI) reference signal resources. A downlink control information (DCI) message may trigger a CSI report on a physical uplink shared channel (PUSCH). Based on a CSI request field in the DCI, the UE may identify the CSI-RS resources that the UE should measure for the CSI report. Due to various considerations, the UE may not expect aperiodic CSI-RS to be transmitted before a symbol carrying a triggering DCI (e.g., a DCI that includes a CSI report request). More specifically, the UE expects the CSI-RS resources to be located during or after the first symbol carrying a DCI that triggers the measurement of the CSI-RS resources.

[0047] Some wireless communication systems may support PDCCH repetition to improve communication reliability and efficiency. That is, by repeating a PDCCH transmission, the receiving UE may have a higher probability of successfully decoding the PDCCH and thus be able to identify various control information, including scheduling information for other channels. In some cases, the UE may decode one of the PDCCH candidates. In such cases, the network or base station may not be configured with information to identify which candidate the UE was able to decode. In such cases, the applicability of resource configuration considerations may be unclear.

[0048] Implementations described herein provide techniques for application of confirmation rules when a recurring (and linked) PDCCH is configured. In some examples, the UE may decode DCI from one or both of the (linked) first and second PDCCH candidates, which may schedule resources for the PDSCH. The UE may apply rules to verify that at least one of the first or second PDCCH candidates is within a threshold number of symbols at the start of a transmission time interval (e.g., a slot) in which the PDSCH resource is scheduled. In some cases, the UE may consider whether the candidates are located between or within slots to determine the confirmation rule to apply.

[0049] In some examples, the UE may decode DCI from one or both of the first and second PDCCH candidates (which are linked), and the DCI may include a CSI request. The UE may apply a rule to verify that a reference signal resource associated with the CSI request is located after the starting symbol of at least the first PDCCH candidate. In some cases, the UE may verify that a reference signal resource is located after the starting symbols of both the first and second PDCCH candidates. These and other implementations are further described herein with respect to the following figures.

[0050] Aspects of the present disclosure are first described in the context of a wireless communication system. Aspects of the present disclosure are further described with respect to the wireless communication system, various resource diagrams, and process flow diagrams. Aspects of the present disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, and flow charts relating to validation of resources associated with repetition-based linked downlink control channel candidates.

[0051] FIG. 1 illustrates an example of a wireless communication system 100 supporting validation of resources associated with repetition-based linked downlink control channel candidates according to aspects of the disclosure. 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 LTE-Advanced (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 communications, ultra-reliable (e.g., mission-critical) communications, low latency communications, communications with low-cost and low-complexity devices, or any combination thereof.

[0052] The base stations 105 may be distributed throughout a geographic area to form the wireless communication system 100 and may be devices of different forms or with different capabilities. The base stations 105 and the UEs 115 may communicate wirelessly via one or more communication links 125. Each base station 105 may provide a coverage area 110 over which the UEs 115 and the base stations 105 may establish one or more communication links 125. The coverage area 110 may be an example of a geographic area over which the base stations 105 and the UEs 115 may support communication of signals via one or more radio access technologies.

[0053] The UEs 115 may be distributed throughout the coverage area 110 of the wireless communication system 100, and each UE 115 may be fixed or mobile or both at different times. The UEs 115 may be devices of different forms or with different capabilities. Some example UEs 115 are shown in FIG. 1. The UEs 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, relay devices, integrated access and backhaul (IAB) nodes, or other network equipment) as shown in FIG. 1.

[0054] The base stations 105 may communicate with the core network 130, with each other, or both. For example, the base stations 105 may interface with the core network 130 through one or more backhaul links 120 (e.g., via an S1, N2, N3, or other interface). The base stations 105 may communicate with each other through the backhaul links 120 (e.g., via an X2, Xn, or other interface), either directly (e.g., directly between the base stations 105), or indirectly (e.g., via the core network 130), or both. In some examples, the backhaul links 120 may be or include one or more wireless links.

[0055] One or more of the base stations 105 described herein may include or be referred to as a base transceiver station, wireless base station, access point, wireless transceiver, NodeB, eNodeB (eNB), next generation NodeB or gigaNodeB (any of which may be referred to as gNB), Home NodeB, Home eNodeB, or other suitable terminology by one skilled in the art.

[0056] The 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, and a "device" may be referred to as a unit, a station, a terminal, or a client, among other examples. The 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, the 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, among other examples, which may be implemented in various articles, such as an appliance, or a vehicle, a meter, among other examples.

[0057] The UEs 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 shown in FIG. 1, as well as base stations 105 and network equipment, including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, among other examples.

[0058] The UE 115 and the base station 105 may wirelessly communicate 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 to support the communication link 125. For example, a carrier used for the communication link 125 may include a portion (e.g., a bandwidth portion (BWP)) of a radio frequency spectrum band 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 collection signaling (e.g., synchronization signals, system information), control signaling that coordinates operation on the carrier, 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.

[0059] In some examples (e.g., in a carrier aggregation configuration), a carrier may also have acquisition or control signaling to coordinate operation with respect to 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 arranged according to a channel raster for discovery by the UE 115. A carrier may be operated in a standalone mode, where initial acquisition and connection may be made by the UE 115 over the carrier, or a carrier may be operated in a non-standalone mode, where a connection is anchored using a different carrier (e.g., of the same or different radio access technology).

[0060] The communication links 125 shown in the wireless communication system 100 may include uplink transmissions from the UE 115 to the base station 105 or downlink transmissions 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 downlink and uplink communications (e.g., in TDD mode).

[0061] A carrier may be associated with a particular bandwidth of the radio frequency spectrum, and in some examples, the carrier bandwidth may be referred to as the carrier or the “system bandwidth” of the wireless communication system 100. For example, the carrier bandwidth may be one of several determined bandwidths for a carrier of a particular radio access technology (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 megahertz (MHz)). The devices of the wireless communication system 100 (e.g., the base station 105, the 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 a UE 115 that supports simultaneous communication via a carrier associated with multiple carrier bandwidths. In some examples, each served UE 115 may be configured to operate on a portion (e.g., a sub-band, BWP), or all, of the carrier bandwidth.

[0062] A signal waveform transmitted on a carrier may be composed of multiple subcarriers (e.g., using a multicarrier modulation (MCM) technique such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM)). In a system employing MCM techniques, a resource element may consist of one symbol period (e.g., the duration of one modulation symbol) and one subcarrier, where the symbol period and the 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 and the higher the order of the modulation scheme that the UE 115 receives, the higher the data rate of the UE 115 may 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 increase the data rate or data integrity for communication with the UE 115.

[0063] One or more numerologies for a carrier may be supported, where the numerology may include a subcarrier spacing (Δf) and a cyclic prefix. A carrier may be divided into one or more BWPs having the same or different numerologies. 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 communication for the UE 115 may be limited to one or more active BWPs.

[0064] The time interval for the base station 105 or the UE 115 may be, for example, T s =1 / (Δf max N f ) seconds, where Δf max may represent the maximum supported subcarrier spacing, and N fmay represent the maximum supported discrete Fourier transform (DFT) size. The communication resource time intervals 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).

[0065] Each frame may include multiple consecutively numbered subframes or slots, and each subframe or 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 several slots. Alternatively, each frame may include a variable number of slots, and the number of slots may depend on the subcarrier spacing. Each slot may include several symbol periods (e.g., depending on the length of a cyclic prefix prepended to each symbol period). In some wireless communications systems 100, a slot may be further divided into multiple minislots containing one or more symbols. Excluding the cyclic prefix, each symbol period may include one or more (e.g., N f The duration of a symbol period may depend on the subcarrier spacing or the frequency band of operation.

[0066] A subframe, slot, minislot, or symbol may be the smallest scheduling unit (e.g., in the time domain) of the wireless communications 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 communications system 100 may be dynamically selected (e.g., in a burst of shortened TTIs (sTTIs)).

[0067] The physical channels may be multiplexed on the carriers according to various techniques. The physical control channels and the physical data channels may be multiplexed on the downlink carriers using, for example, one or more of a time division multiplexing (TDM), a frequency division multiplexing (FDM), or a hybrid TDM-FDM technique. A control region (e.g., a control resource set (CORESET)) for the physical control channels may be defined by a number of symbol periods and may extend across the system bandwidth of the carrier or a subset of the system bandwidth. One or more control regions (e.g., CORESET) may be configured for a set of UEs 115. For example, one or more of the 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 at one or more aggregation levels located in a cascaded manner. The aggregation level for a control channel candidate may refer to the number of control channel resources (e.g., control channel elements (CCEs)) associated with the coded information for a control information format having a given payload size. The search space sets may include a common search space set configured for sending control information to multiple UEs 115 and a UE-specific search space set for sending control information to a specific UE 115.

[0068] Each base station 105 may provide communication coverage via one or more cells, e.g., macro cells, small cells, hot spots, or other types of cells, or any combination thereof. The term "cell" may refer to a logical communication entity used for communication with the 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) to distinguish neighboring cells. In some examples, a cell may also refer to a geographic coverage area 110 or a portion (e.g., a sector) of the geographic coverage area 110 in which the logical communication entity operates. Such a cell may range from a smaller area (e.g., a structure, a subset of a structure) 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 a building, or an outside space between or overlapping with the geographic coverage area 110, among other examples.

[0069] A macro cell generally covers a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access by UEs 115 subscribing to the service of a network provider supporting the macro cell. A small cell may be associated with a lower power base station 105 compared to a macro cell, and the small cell may operate in the same or different (e.g., licensed, unlicensed) frequency band as the macro cell. A small cell may provide unrestricted access to UEs 115 subscribing to the service of a network provider, or may provide restricted access to UEs 115 that have an association with the small cell (e.g., UEs 115 in a closed subscriber group (CSG), UEs 115 associated with a user in a home or office). A base station 105 may support one or more cells and may also support communication on one or more cells using one or more component carriers.

[0070] 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.

[0071] In some examples, the base stations 105 may be mobile and thus provide communication coverage to moving geographic coverage areas 110. In some examples, the different geographic coverage areas 110 associated with different technologies may overlap, but may be supported by the same base station 105. In other examples, overlapping geographic coverage areas 110 associated with different technologies may be supported by different base stations 105. The wireless communication system 100 may include a heterogeneous network, for example, where different types of base stations 105 provide coverage to various geographic coverage areas 110 using the same or different radio access technologies.

[0072] The wireless communications 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.

[0073] 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 technologies that allow devices to communicate with each other or with the base station 105 without human intervention. In some examples, M2M communication or MTC may include communication from devices that incorporate sensors or meters to measure or capture information and relay that information to a central server or application program that utilizes such information or presents the information to a human who interacts with the application program. Some UEs 115 may be designed to collect information or enable 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, wildlife monitoring, weather and geological event monitoring, fleet management and tracking, remote security sensing, physical access control, and transaction-based business billing.

[0074] Some UEs 115 may be configured to use operating modes that reduce power consumption, such as half-duplex communication (e.g., a mode that supports one-way communication via transmission or reception, but not simultaneous transmission and reception). In some examples, the half-duplex communication may be performed at a reduced peak rate. Other power saving techniques for the UE 115 include entering a power-saving deep sleep mode when not engaged in active communication, operating over a limited bandwidth (e.g., in accordance with narrowband communication), or a combination of these techniques. For example, some UEs 115 may be configured for operation using a narrowband protocol type 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 the carrier, or outside of the carrier.

[0075] The wireless communication system 100 may be configured to support ultra-reliable or low latency communications, or various combinations thereof. For example, the wireless communication system 100 may be configured to support ultra-reliable low latency communications (URLLC) or mission-critical communications. The UE 115 may be designed to support ultra-reliable, low latency, or critical functions (e.g., mission-critical functionality). Ultra-reliable communications may include private or group communications and may 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 may include service prioritization, and the mission-critical services may be used for public safety or general commercial applications. The terms ultra-reliable, low latency, mission-critical, and ultra-reliable low latency may be used interchangeably herein.

[0076] In some examples, the UE 115 may also be able to communicate directly with other UEs 115 via device-to-device (D2D) communication links 135 (e.g., using a peer-to-peer (P2P) protocol or a D2D protocol). One or more UEs 115 utilizing D2D communication may be within the geographic coverage area 110 of the base station 105. Other UEs 115 in such a group may be outside the geographic coverage area 110 of the base station 105 or may not be able to receive transmissions from the base station 105 in some cases. In some examples, a group of UEs 115 communicating via D2D communication may utilize a one-to-many (1:M) system in which each UE 115 communicates to every other UE 115 in the group. In some examples, the base station 105 facilitates scheduling of resources for D2D communication. In other cases, D2D communication occurs between UEs 115 without the involvement of the base station 105.

[0077] In some systems, the D2D communication link 135 may be an example of a communication channel, such as a sidelink communication channel, between vehicles (e.g., UE 115). In some examples, the vehicles may communicate using vehicle-to-everything (V2X) communication, vehicle-to-vehicle (V2V) communication, or some combination thereof. The vehicles may 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 may communicate with roadside infrastructure, such as roadside units, or with a network via one or more network nodes (e.g., base stations 105) using vehicle-to-network (V2N) communication, or both.

[0078] 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 5G Core (5GC), which 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 forwarded through a user plane entity, which may provide IP address allocation as well as other functions. The user plane entity may be connected to one or more network operators' IP services 150. The IP services 150 may include access to the Internet, an intranet, an IP Multimedia Subsystem (IMS), or packet-switched streaming services.

[0079] Some of the network devices, such as the base stations 105, may include subcomponents, such as an access network entity 140, which may be an example of an access node controller (ANC). Each access network entity 140 may communicate with the UE 115 through one or more other access network transmitting entities 145, which may be referred to as a radio head, a smart radio head, or a transmit / receive point (TRP). Each access network transmitting entity 145 may include one or more antenna panels. In some configurations, 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 integrated into a single network device (e.g., the base station 105).

[0080] The wireless communication system 100 may operate using one or more frequency bands, typically in the range of 300 megahertz (MHz) to 300 gigahertz (GHz). The 300 MHz to 3 GHz region is commonly referred to as the ultra-high frequency (UHF) region or decimeter band because the wavelengths range from approximately 1 decimeter to 1 meter in length. Although UHF waves may be blocked or redirected by buildings and environmental features, the waves may penetrate structures sufficiently for a macrocell to serve UEs 115 located indoors. Transmission of UHF waves may be associated with smaller antennas and shorter distances (e.g., less than 100 kilometers) compared to transmissions using lower frequencies and longer waves in the short wave (HF) or very high frequency (VHF) portions of the spectrum below 300 MHz.

[0081] The wireless communication system 100 may also operate in the centimeter wave (SHF) region, using a frequency band from 3 GHz to 30 GHz, also known as the centimeter band, or in the millimeter wave (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, where the EHF antennas of the respective 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 devices. However, propagation of EHF transmissions may experience more atmospheric attenuation and shorter distances than SHF or UHF transmissions. The techniques disclosed herein may be employed across transmissions using one or more different frequency regions, and the designated use of the bands across these frequency regions may vary by country or regulatory body.

[0082] 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 the base station 105 and the UE 115 may employ carrier sensing for collision detection and collision avoidance. In some examples, operation in an unlicensed band may be based on a carrier aggregation configuration in conjunction with component carriers operating in a licensed band (e.g., LAA). Operation in an unlicensed spectrum may include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, among other examples.

[0083] The base station 105 or UE 115 may be equipped with multiple antennas that may 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 in one or more antenna arrays or antenna panels that may support MIMO operations or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may be co-located in 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 in various geographic locations. The base station 105 may have an antenna array with several rows and columns of antenna ports that the base station 105 may use to support beamforming of communications with the UE 115. Similarly, the UE 115 may have one or more antenna arrays that may support various MIMO or beamforming operations. Additionally or alternatively, the antenna panels may support radio frequency beamforming for signals transmitted through the antenna ports.

[0084] A base station 105 or a UE 115 may use MIMO communications to exploit multipath signal propagation and increase spectral efficiency by transmitting or receiving multiple signals via different spatial layers. Such techniques may be referred to as spatial multiplexing. The multiple signals may be transmitted by a transmitting device via, for example, different antennas or different combinations of antennas. Similarly, the multiple signals may be transmitted by a receiving device via different antennas or different combinations of antennas. Each of the multiple signals may be referred to as a separate spatial stream and may carry bits related to the same data stream (e.g., the same codeword) or different data streams (e.g., different codewords). The different spatial layers may be associated with different antenna ports used 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.

[0085] Beamforming, sometimes referred to as spatial filtering, directional transmission, or directional reception, is a signal processing technique that may be used in a transmitting or receiving device (e.g., base station 105, UE 115) to shape or steer an antenna beam (e.g., transmit beam, receive beam) along a spatial path between the transmitting device and the receiving device. Beamforming may be achieved by combining signals communicated through antenna elements of an antenna array such that some signals propagating in a particular orientation relative to the antenna array are subject to constructive interference, while other signals are subject to destructive interference. Adjustment of signals communicated through antenna elements may include a transmitting or receiving device applying an amplitude offset, a phase offset, or both, to signals carried through an antenna element associated with the device. The adjustments associated with each of the antenna elements may be defined by a beamforming weight set associated with a particular orientation (e.g., relative to the antenna array of the transmitting or receiving device, or to some other orientation).

[0086] 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 a beamforming operation 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 by the base station 105 multiple times in different directions. For example, the base station 105 may transmit signals according to different beamforming weight sets associated with different directions of transmission. The transmissions in different beam directions may be used (e.g., by a transmitting device such as the base station 105 or by a receiving device such as the UE 115) to identify beam directions for later transmission or reception by the base station 105.

[0087] Some signals, such as data signals associated with a particular receiving device, may be transmitted by the base station 105 in a single beam direction (e.g., a direction associated with a receiving device, such as the UE 115). In some examples, the beam direction associated with a transmission along a single beam direction may be determined based on signals transmitted in one or more beam directions. For example, the UE 115 may receive one or more of the signals transmitted by the base station 105 in different directions and may report to the base station 105 an indication of the signal that the UE 115 received with the highest signal quality or possibly an acceptable signal quality.

[0088] In some examples, transmission by a device (e.g., by the base station 105 or the UE 115) may be performed using multiple beam directions, and the device may use a combination of digital precoding or radio frequency beamforming to generate a combined beam for transmission (e.g., from the base station 105 to the UE 115). The UE 115 may report feedback indicating precoding weights for one or more beam directions, and the feedback may correspond to a configured number of beams across the system bandwidth or one or more subbands. The base station 105 may transmit reference signals (e.g., cell-specific reference signals (CRS), channel state information reference signals (CSI-RS)) that may or may not be precoded. 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). These techniques are described with reference to signals transmitted in one or more directions by the base station 105, although the UE 115 may employ similar techniques for transmitting a signal multiple times in different directions (e.g., to identify a beam direction for subsequent transmission or reception by the UE 115) or for transmitting a signal in a single direction (e.g., to transmit data to a receiving device).

[0089] 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 the base station 105. For example, the receiving device may attempt multiple receive directions by receiving via different antenna subarrays, by processing the received signals according to different antenna subarrays, by receiving according to different receive beamforming weight sets (e.g., different directional listening weight sets) applied to signals received at multiple antenna elements of the antenna array, or by processing the received signals according to different receive beamforming weight sets applied to signals received at multiple antenna elements of the antenna array, any of which may be referred to as "listening" with 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 a data signal). The single receive configuration may be aligned to a beam direction determined based on listening with different receive configuration directions (e.g., a beam direction determined to have the highest signal strength, the highest signal-to-noise ratio (SNR), or possibly acceptable signal quality based on listening with multiple beam directions).

[0090] The wireless communication system 100 may be a packet-based network that operates according to a layered protocol stack. In the user plane, communication at the bearer or Packet Data Convergence Protocol (PDCP) layer may be IP-based. The Radio Link Control (RLC) layer may perform packet segmentation and reassembly to communicate on logical channels. The Medium Access Control (MAC) layer may perform priority handling and multiplexing of logical channels into transport channels. The MAC layer may also use error detection techniques, error correction techniques, or both to support retransmissions at the MAC layer to improve link efficiency. In the control plane, the Radio Resource Control (RRC) protocol layer may establish, configure, and maintain an RRC connection between the UE 115 and the base station 105 or core network 130, which supports radio bearers for user plane data. In the physical layer, the transport channels may be mapped to physical channels.

[0091] The UE 115 and the 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 one technique for increasing the likelihood that the data is correctly received on the 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 throughput at the MAC layer in poor radio conditions (e.g., low signal-to-noise conditions). In some examples, a device may support same-slot HARQ feedback, in which the device may provide HARQ feedback in a particular slot for data received in a previous symbol in that slot. In other cases, the device may provide HARQ feedback in a subsequent slot or according to some other time interval.

[0092] The wireless communication system 100 may support channel repetition to increase communication reliability. For example, the base station 105 may repeat a PDCCH transmission to increase the likelihood that the receiving UE 115 decodes the DCI of the PDCCH and thus identifies the control and scheduling information. However, in such a case, the network (base station 105) may not be able to identify candidates from which the DCI is decoded by the UE 115. Thus, resource location considerations may be difficult to apply by the UE 115 and the base station 105.

[0093] Implementations described herein support checking rules that the UE 115 and / or the base station 105 may apply in PDCCH repetition scenarios. For example, if the UE 115 is configured to monitor PDCCH repetitions, the UE 115 may apply one or more rules when DCI included in one of the repetitions schedules a PDSCH (e.g., Type A) or triggers a CSI report. For PDSCH Type A scheduling, the UE 115 may decode DCI in one or both of the first PDCCH candidate and the second PDCCH candidate and apply the rule to determine that at least one of the first PDCCH candidate or the second PDCCH candidate is within a threshold number of symbols at the start of a transmission time interval in which a resource of the PDSCH is scheduled. The UE 115 may receive a downlink message on the PDSCH resource based on the application of the rule. In some examples, the UE 115 may consider whether the first and second PDCCH repetitions are inter-slot or intra-slot and apply the rule based on the determination.

[0094] For a CSI-RS report triggered by DCI of a linked PDCCH candidate, the UE 115 may decode the DCI (including the CSI request) in one or both of the first PDCCH candidate and the second PDCCH candidate and apply a rule to determine that a reference signal resource associated with the CSI request is located after the starting symbol of at least the first PDCCH candidate (e.g., the earliest candidate). The UE 115 may transmit a CSI report based on the application of the rule. In some cases, the UE 115 may determine that a reference signal resource is located after the starting symbol of both the first and second PDCCH candidates.

[0095] Thus, using these rules, the UE 115 may determine that the locations of various resources are likely not to cause additional complexity considerations, interference, or some other error condition. Furthermore, the base station 105 may determine that such rules are verified when scheduling various resources, such as CSI-RS resources and PDSCH resources. Thus, application of these rules may improve, among other things, the reliability and efficiency of communications.

[0096] 2 illustrates an example of a wireless communication system 200 that supports validation of resources associated with repetition-based linked downlink control channel candidates in accordance with aspects of the present disclosure. The wireless communication system 200 may implement aspects of the wireless communication system 100. For example, the wireless communication system 200 includes a base station 105-a and a UE 115-a, which may be examples of the corresponding devices of FIG. 1. FIG. 2 illustrates an example of communication 205 between the base station 105-a and the UE 115-a.

[0097] As shown by communication 205-a, the wireless communication system 200 may support the base station 105-a to transmit control information in the PDCCH 210 that schedules the PDSCH 215. In some cases, the control information (e.g., DCI) may trigger the PDSCH 215 using Type-A mapping, as shown in communication 205-a. According to Type-A PDSCH mapping, the first demodulation reference signal (DMRS) 215 symbol of the PDSCH 215 is either the third symbol (symbol number 2) or the fourth symbol (symbol number 3) of a transmission time interval (e.g., slot 250). The symbol position of the DMRS 220 may be configured in a master information block (MIB). In a Type-A mapping scenario, the starting symbol of the PDSCH 215 may be symbol number 0, 1, 2, or 3 of the slot 250. The starting symbol of the PDSCH may be dynamically configured in a time domain resource allocation (TDRA) field of the DCI that may be included in the PDCCH 210. Considering processing complexity, among other things, the UE 115-a may not expect to receive the PDSCH 215 with Type A mapping (as shown in communication 205-a) in slot 250 if the PDCCH 210 that schedules the PDSCH 215 was received in the same slot 250 and was not included in the first three symbols of the slot. As shown, the PDCCH 210 is included in the first three symbols 225, thus satisfying the rule. However, if the PDCCH 210 was not included in the first three symbols 225, the UE 115-a may throw an error, ignore the resource, or perform another action, depending on the implementation of the UE 115-a.

[0098] As shown in communication 205-a, wireless communication system 200 may support CSI reporting. DCI 235 (e.g., included in PDCCH 210), which may be an example of DCI format 0_1 ​​or 0_2 uplink DCI, may trigger a CSI report on the PUSCH, which may be referred to as an aperiodic CSI report. The DCI may include a CSI request field indicating a trigger state among a number of RRC configured trigger states (e.g., via higher layer parameter AperiodicTriggerStateList). Each trigger state in the list may be linked to a CSI-RS resource set, and each CSI-RS resource set may have a number of CSI-RS resources. UE 115-a may measure CSI-RS resources (e.g., CSI-RS resources 230) and transmit a CSI report on resources of the PUSCH. To determine the location of the CSI-RS resources, a slot offset may be configured for each CSI-RS resource set using control messaging, such as RRC. When the slot offset of the CSI-RS resource set associated with the triggering state indicated in the DCI is 0, the CSI-RS resources in the CSI-RS resource set are received in the same slot as the DCI. Due to processing complexity considerations, among other things, the UE 115-a may not expect the aperiodic CSI-RS to be transmitted before the OFDM symbol 225 carrying the triggering DCI 235 when the CSI-RS resources are transmitted in the same slot as the triggering DCI 235. However, as shown in communication 205-b, if the CSI-RS resource 230 is before the DCI 235, the UE 115-a may throw an error, ignore the resource, or perform some other action depending on the implementation of the UE 115-a.

[0099] The wireless communication system 200 may also support configuring the UE 115-a with a set of control resource sets (CORESET) in the bandwidth portion of the serving cell. Each CORESET may be associated with an active transmission configuration indicator (TCI) state. RRC signaling may be used to configure the resource blocks in the frequency domain and the number of symbols of the CORESET as part of the CORESET configuration. A PDCCH search space set (SS set) may be associated with one CORESET, and an upper limit (e.g., 10) of search space sets in the bandwidth portion of the component carrier / serving cell may be determined. Using control signaling such as RRC signaling, a search space set may be configured with the associated CORESET, slot periodicity and offset to monitor, symbols to monitor within the slot (e.g., to determine PDCCH monitoring opportunities for the search space set), DCI format to monitor, and the number of PDCCH candidates for a given aggregation level.

[0100] The PDCCH candidates may be defined as part of a search space set configuration. PDCCH candidates with a given aggregation level and a given candidate index are defined in a given search space set. DCI may be received on one PDCCH candidate, and the UE 115-a may monitor the PDCCH candidates in the search space set. One or more candidates for which a cyclic redundancy check has passed (successfully decoded) may correspond to the decoded DCI, and the UE 115-a may blindly decode the DCI.

[0101] As described herein, the wireless communication system 200 may support PDCCH repetitions, with each repetition being a PDCCH candidate. The two PDCCH candidates may carry the same DCI and thus may be considered to be "linked." The two linked PDCCH candidates may have the same aggregation level (same number of control channel elements), and the DCI payload transmitted using the two PDCCH candidates may be the same. The UE 115-b may perform soft combining of multiple PDCCH candidates to decode the DCI. To support soft combining, the UE 115-a may be configured to identify the linked PDCCH candidates. To support linking, the two search space sets (carrying the PDCCH candidates) may be linked via control signaling, such as RRC signaling. The monitoring opportunities of the two linked search space sets may be one-to-one mapped. PDCCH candidates having the same aggregation level and the same candidate index in two linked search space sets may be linked, and the two linked search space sets may be composed of the same number of candidates for each aggregation level.

[0102] A first search space set 240 and a second search space set 245 are shown in slot 250. Arrows across first search space set 240 and second search space set 245 indicate linked PDCCH candidates within the respective search space sets. Communication 205-c and communication 205-d show possible search space set configurations, although it should be understood that other configurations are contemplated within the scope of this disclosure.

[0103] When the DCI 235 schedules the PDSCH 215 with mapping type A, or the DCI 235 triggers one or more aperiodic CSI-RS resources and the DCI 235 is received in the same slot as one or both of the linked PDCCH candidates, the resource consideration with respect to the PDSCH and CSI-RS resources may be unclear. More specifically, since the UE 115-a may decode the DCI in the first PDCCH iteration, the second PDCCH iteration, or both the first and second iterations, the network (e.g., the base station 105-a) may not be able to identify the iteration that carries the DCI that the UE decodes. In such a case, the UE 115-a may not be able to determine where to consider resources for the PDCCH or the DCI.

[0104] Implementations described herein provide one or more confirmation rules that the UE 115-a may apply when some condition occurs. For example, if the UE 115-a detects DCI 235 in PDCCH candidates linked for PDCCH repetition (e.g., in two corresponding search space sets and monitoring occasions linked), and the DCI schedules a PDSCH with mapping type A, the UE 115-a may apply a confirmation rule that considers whether at least one of the first PDCCH candidate or the second PDCCH candidate is within a threshold number of symbols at the start of a transmission time interval in which the PDSCH resource is scheduled. In some cases, the UE 115-a may consider whether the PDCCH candidate is inter-slot or intra-slot to determine whether one or both candidates are within a threshold number of symbols at the start of a slot.

[0105] 3A and 3B illustrate an example of a resource diagram 300 illustrating validating resources associated with repetition-based linked downlink control channel candidates according to aspects of the disclosure. In some examples, the resource diagram may implement aspects of the wireless communication system 100. For example, the UE 115 may receive an indication from the base station 105 (as described with reference to FIGS. 1 and 2) that a first PDCCH candidate in a first search space set is linked to a second PDCCH candidate in a second search space set, where the first PDCCH candidate precedes, at least in part, the second PDCCH candidate. In some examples, as shown in FIG. 3A, the first PDCCH candidate may be in a first slot (e.g., TTI) and the second PDCCH candidate may be in a second slot. Alternatively, as shown in FIG. 3B, the first PDCCH candidate and the second PDCCH candidate may be in a common slot. As will be described in more detail, the DCI of the linked PDCCH candidates in Figures 3A and 3B schedules a PDSCH (e.g., a PDSCH with Type A mapping) in at least one slot (e.g., TTI) of the linked candidates. Thus, the UE and base station may apply validation rules to determine whether the PDSCH resources and PDCCH candidates are valid.

[0106] FIG. 3A illustrates a resource diagram 300-a including a first TTI 305-a and a second TTI 305-b. In some cases, a first PDCCH candidate 310-a corresponding to a first search space may be in the first TTI 305-a, and a second PDCCH candidate 310-b corresponding to a second search space may be in the second TTI 305-b. The location of the search space set, and thus the linked PDCCH candidates 310, may be configured by the base station. In some examples, the base station may transmit an indication to the UE that the first PDCCH candidate 310-a (e.g., the first PDCCH candidate) is linked to the second PDCCH candidate 310-b (e.g., the second PDCCH candidate). Specifically, the base station may transmit, and the UE may receive, at least one RRC message indicating that the first search space and the second search space are linked (e.g., for an iteration). The indication may be in the form of a CORESET and search space set configuration, as described with respect to FIG. 2. Based on the first search space, the second search space, and the RRC, the UE may determine that the first PDCCH candidate 310-a and the second PDCCH candidate 310-b are linked. Furthermore, the base station may schedule the search space set such that the first PDCCH candidate 310-a may precede, at least in part, the second PDCCH candidate 310-b. Furthermore, based on the indication, the UE may determine that the first PDCCH candidate 310-a is placed within the first TTI 305-a and the second PDCCH candidate 310-b is placed within the second TTI 305-b (e.g., inter-slot placement).

[0107] Since the PDCCH candidates 310 may be linked, the PDCCH candidates may carry the same DCI payload. The UE may decode the DCI of the first PDCCH candidate 310-a, the second PDCCH candidate 310-b, or both. The UE may determine that the DCI schedules resources for the PDSCH with a type-A resource mapping. For example, the UE may determine that the DCI schedules resources for the PDSCH in the second TTI 305-b in which the DCI includes the second PDCCH candidate 310-b. Since the PDSCH resources are scheduled in a slot (e.g., the second TTI 305-b) that includes a linked PDCCH candidate (e.g., the PDCCH candidate 310-b) that carries a scheduling DCI, the UE may apply a validation rule to verify that the second PDCCH candidate 310-b is located within a threshold number of symbols (e.g., three symbols) at the start of the second TTI 305-b that corresponds to the resources scheduled for the PDSCH. More specifically, as shown in FIG. 3A, when a PDCCH candidate is placed between slots and a PDSCH 315 is scheduled in the same slot as a later PDCCH candidate (e.g., a second PDCCH candidate 310-b), the UE may apply the verification rule. Based on the determination and verification, the base station may transmit, and the UE may receive, a downlink message in the verified resource that includes a type-A resource mapping corresponding to the scheduled PDSCH resource.

[0108] FIG. 3B illustrates a resource diagram 300-b including a first PDCCH candidate 320-a and a second PDCCH candidate 320-b within a TTI 325 (e.g., a slot). The base station may transmit an indication (e.g., an RRC configuration) to the UE that the first PDCCH candidate 320-a is linked to the second PDCCH candidate 320-b. Based on the indication, the UE may determine that the first PDCCH candidate 320-a and the second PDCCH candidate 320-b are linked. The configuration may specify that both the first PDCCH candidate 320-a and the second PDCCH candidate 320-b are placed within the TTI 325 (e.g., within a slot). The base station transmits DCI in the first PDCCH candidate 320-a and the second PDCCH candidate 320-b. The UE may decode DCI associated with the first PDCCH candidate 320-a, the second PDCCH candidate 320-b, or both. The UE may determine that the DCI schedules resources for the PDSCH 330 using type-A resource mapping.

[0109] In some cases, the UE and base station may determine that the first PDCCH candidate 320-a and the second PDCCH candidate 320-b are located within a TTI 325 in which a resource (e.g., a PDSCH with a type-A resource mapping) is scheduled. Based on the determination, the UE and base station may apply a verification rule to verify the location of the first PDCCH candidate 320-a and the second PDCCH candidate 320-b within the TTI 325 relative to the PDSCH resources scheduled in the same TTI 325. Specifically, the UE and base station may verify that one or both of the first PDCCH candidate 320-a and the second PDCCH candidate 320-b are located within one or more of a threshold number of symbols at the beginning of the TTI 325 (e.g., the first three symbols in some implementations). Thus, when both PDCCH candidates 320 are placed within the same TTI of the PDSCH 330 with Type-A mapping, the UE and base station may apply a verification rule to determine whether one or both PDCCH candidates 320 are validly placed. The device may apply either rule (e.g., verify one or both candidate placements), and the rule applied may be based on UE implementation, pre-configuration, or configuration from the base station. Based on the determination and verification, the base station may transmit, and the UE may receive, at least one downlink message within the verified resources of the PDSCH 330.

[0110] Thus, as shown in Figures 3A and 3B, when the DCI of a linked candidate schedules a PDSCH with Type-A mapping in the linked candidate, the UE may apply one of the rules, which may depend on the placement of the PDCCH candidate, to verify that the resources of the PDSCH and / or PDCCH candidate are valid. This technique may support improved communication reliability and efficiency by reducing resource complexity.

[0111] FIG. 4 illustrates an example of a resource diagram 400 supporting validation of resources associated with repetition-based linked downlink control channel candidates according to aspects of the disclosure. In some examples, the resource diagram 400 may implement aspects of the wireless communication systems 100 and 200. For example, the UE 115 may receive an indication from the base station 105 (as described with reference to FIGS. 1 and 2) that a first PDCCH candidate in a first search space set is linked to a second PDCCH in a second search space set, the first PDCCH candidate preceding the second PDCCH candidate based, at least in part, on the search space set configuration. The search set configuration may be configured using control messaging, such as RRC messaging. In some examples, the first PDCCH candidate and the second PDCCH candidate may reside in a common slot (e.g., TTI 405) based on the configuration of the respective search space sets corresponding to the linked PDCCH candidates.

[0112] The base station may transmit a DCI including a CSI request to the UE via the first PDCCH candidate 410-a and the second PDCCH candidate 410-b. The CSI request may include a field (e.g., a trigger state indication) corresponding to a CSI-RS resource 415 that the UE should use for measurement and CSI reporting. The UE may decode the DCI from the first PDCCH candidate 410-a, the second PDCCH candidate 410-b, or both, and identify the CSI request included in the DCI and the corresponding CSI-RS resource 415. In some cases, the UE may determine in which slot the CSI-RS resource 415 is located based on an offset indication in the DCI, as described in FIG. 2. If the CSI-RS resource 415 is scheduled in the same slot as the DCI that triggers the CSI-RS resource 415 (e.g., the offset indication in the DCI is 0), the UE and base station may apply a confirmation rule to determine that the reference signal resource (e.g., the CSI-RS resource 415) associated with the CSI request is validly scheduled. That is, the UE may not expect the CSI-RS resource 415 to be scheduled before one or both OFDM symbols of the PDCCH candidates 410 that carry the triggering DCI. In some examples, the rule specifies that only the earliest PDCCH candidate is considered (e.g., the CSI-RS resource 415-b is placed after the starting symbol of the earliest PDCCH candidate 410-a). In other examples, the rule specifies that both PDCCH candidates are considered (e.g., the CSI-RS resource 415-c is placed after the starting symbols of both PDCCH candidates 410). Which rule is applied may be pre-configured or configured by the base station.

[0113] If the CSI-RS resource 415 is not validly scheduled, the UE 115 may throw an error, ignore the invalid resource, or perform some other action based on the implementation. For example, as shown in FIG. 4, the CSI-RS resource 415-a does not meet the validation rules due to its location before the earliest PDCCH candidate (as well as both PDCCH candidates 410), and thus the UE may issue an error, ignore the CSI-RS resource 415-a, ignore the DCI, or perform some other action. If the CSI-RS resource 415 meets the validation rules, the UE may measure the CSI-RS resource 415 and send a CSI report to the base station.

[0114] Thus, as shown in Figure 4, when the DCI of a linked candidate triggers a CSI-RS resource in a TTI that includes the linked candidate, the UE may apply one of the rules to verify that the CSI-RS and / or PDCCH candidate resources are valid. This technique may support improved communication reliability and efficiency by reducing resource complexity.

[0115] FIG. 5 illustrates an example of a process flow diagram 500 supporting validation of resources associated with repetition-based linked downlink control channel candidates according to an aspect of the disclosure. The process flow diagram 500 includes aspects of the wireless communication system 100 of FIG. 1 and the wireless communication system 200 of FIG. 2. For example, the process flow diagram includes a base station 105-b and a UE 115-b, which may be examples of corresponding devices described with respect to FIG. 1 and FIG. 2. The base station 105-b and the UE 115-b may use various resources for communication, such as the resources illustrated in the resource diagram 300 of FIG. 3 and the resource diagram 400 of FIG. 4.

[0116] At 505, the UE 115-b may receive an indication from the base station 105-b that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set. The first downlink control channel candidate may be received, at least in part, before the second downlink control channel candidate. The indication may be in the form of an RRC configuration of the respective search space sets corresponding to the control channel candidates. The UE 115-b may monitor the search space sets to identify the control channel candidates.

[0117] At 510, the UE 115-b may decode downlink control information from at least one of the first downlink control channel candidate or the second downlink control channel candidate. In some examples, the downlink control information may schedule resources of a downlink shared channel (e.g., a PDSCH) in a transmission time interval that includes at least the second downlink control channel candidate. In some examples, the downlink control information may include a channel state information request.

[0118] At 515, the UE 115-b may apply a checking rule based on resources scheduled or triggered by the DCI. For example, if the DCI schedules a PDSCH resource of a downlink shared channel in a transmission time interval that includes one or both downlink control channel candidates, the checking rule may be that at least one of the first downlink control channel candidate or the second downlink control channel candidate is within a threshold number of symbols at the beginning of the transmission time interval in which the resource is scheduled. In some cases, the applied rule is based on the first downlink control channel candidate and the second downlink control channel candidate being placed in separate transmission time intervals. In such a case, the UE 115-b may verify that the second downlink control channel candidate is placed within a threshold number of symbols of the second transmission time interval. In some cases, the applied rule is based on both downlink control channel candidates being placed in the same transmission time interval in which the downlink shared channel resource is scheduled. In such a case, the UE 115-b may verify that both the first downlink control channel candidate and the second downlink control channel candidate are located within a threshold number of symbols of a transmission time interval, or that at least one of the first downlink control channel candidate and the second downlink control channel candidate are located within a threshold number of symbols of a transmission time interval.

[0119] When the DCI includes a channel state information request, the checking rule may be that the reference signal resource associated with the channel state information request is located after the starting symbol of at least the first downlink control channel candidate. In some cases, when the DCI includes a channel state information request, the checking rule is that the reference signal resource is located after the starting symbols of both the first and second downlink control channel candidates.

[0120] At 520, when the DCI schedules the downlink shared channel, the UE 115-b may receive a downlink message in resources from the base station 105-b based at least in part on a confirmation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied.

[0121] At 525, when the DCI includes a channel state information request, the UE 115-b may transmit a channel state information report to the base station 105-b based at least in part on a confirmation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied.

[0122] 6 illustrates a block diagram 600 of a device 605 that supports validation of resources associated with repetition-based linked downlink control channel candidates according to an aspect of the disclosure. The device 605 may be an example of an aspect of a UE 115 as described herein. The device 605 may include a receiver 610, a transmitter 615, and a communications manager 620. The device 605 may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses).

[0123] The receiver 610 may provide a means for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to validation of resources associated with repetition-based linked downlink control channel candidates). The information may be passed to other components of the device 605. The receiver 610 may use a single antenna or a set of multiple antennas.

[0124] The transmitter 615 may provide a means for transmitting signals generated by other components of the device 605. For example, the transmitter 615 may transmit information such as packets associated with various information channels (e.g., a control channel, a data channel, an information channel related to validation of resources associated with repetition-based linked downlink control channel candidates), user data, control information, or any combination thereof. In some examples, the transmitter 615 may be collocated with the receiver 610 in a transceiver module. The transmitter 615 may utilize a single antenna or a set of multiple antennas.

[0125] The communications manager 620, the receiver 610, the transmitter 615, or various combinations or components thereof may be examples of means for performing various aspects of validating resources associated with repetition-based linked downlink control channel candidates as described herein. For example, the communications manager 620, the receiver 610, the transmitter 615, or various combinations or components thereof may support a method for performing one or more of the functions described herein.

[0126] In some examples, the communications manager 620, the receiver 610, the transmitter 615, or various combinations or components thereof may be implemented in hardware (e.g., in a communications management circuit). The hardware may include a processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as a means for performing, or in some cases supporting, the functions described in this disclosure. In some examples, the processor and a memory coupled to the processor may be configured to perform one or more of the functions described herein (e.g., by the processor executing instructions stored in the memory).

[0127] Additionally or alternatively, in some examples, the communications manager 620, the receiver 610, the transmitter 615, or various combinations or components thereof may be implemented in code executed by a processor (e.g., as communications management software or firmware). If implemented in code executed by a processor, the functions of the communications manager 620, the receiver 610, the transmitter 615, or various combinations or components thereof may be performed by a general purpose processor, a DSP, a central processing unit (CPU), an ASIC, an FPGA, or any combination of these or other programmable logic devices (e.g., configured as or in some cases supporting a means for performing the functions described in this disclosure).

[0128] In some examples, the communications manager 620 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using, or possibly cooperating with, the receiver 610, the transmitter 615, or both. For example, the communications manager 620 may receive information from the receiver 610, send information to the transmitter 615, or be integrated with the receiver 610, the transmitter 615, or both to receive information, transmit information, or perform various other operations described herein.

[0129] The communications manager 620 may support wireless communications in a UE according to examples disclosed herein. For example, the communications manager 620 may be configured as a means for receiving, or otherwise supporting, an indication from a base station that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, the first downlink control channel candidate being received, at least in part, before the second downlink control channel candidate. The communications manager 620 may be configured as a means for decoding downlink control information from at least one of the first downlink control channel candidate or the second downlink control channel candidate, the downlink control information scheduling, decoding resources of a downlink shared channel in a transmission time interval including at least the second downlink control channel candidate. The communications manager 620 may be configured as or otherwise support a means for receiving a downlink message at a resource based on a confirmation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied, the confirmation rule being that at least one of the first downlink control channel candidate or the second downlink control channel candidate is within a threshold number of symbols at a start of a transmission time interval in which the resource is scheduled.

[0130] Additionally or alternatively, the communications manager 620 may support wireless communications at the UE in accordance with examples disclosed herein. For example, the communications manager 620 may be configured as or otherwise support a means for receiving an indication from a base station that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, where the first downlink control channel candidate is received, at least in part, before the second downlink control channel candidate. The communications manager 620 may be configured as or otherwise support a means for decoding downlink control information from at least one of the first downlink control channel candidate or the second downlink control channel candidate, where the downlink control information includes a channel state information request. The communications manager 620 may be configured as or otherwise support a means for transmitting a channel state information report to a base station based on a confirmation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied, the confirmation rule being that the reference signal resource associated with the channel state information request is located at least after the starting symbol of the first downlink control channel candidate.

[0131] By including or configuring the communications manager 620 according to the examples described herein, the device 605 (e.g., a processor controlling or possibly coupled to the receiver 610, the transmitter 615, the communications manager 620, or a combination thereof) may support techniques for reducing processing by verifying that the resources do not increase processing complexity, and thus may result in efficient utilization of communications resources.

[0132] 7 illustrates a block diagram 700 of a device 705 supporting validation of resources associated with repetition-based linked downlink control channel candidates according to an aspect of the disclosure. The device 705 may be an example of an aspect of a device 605 or a UE 115 as described herein. The device 705 may include a receiver 710, a transmitter 715, and a communications manager 720. The device 705 may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses).

[0133] The receiver 710 may provide a means for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to validation of resources associated with repetition-based linked downlink control channel candidates). The information may be passed to other components of the device 705. The receiver 710 may use a single antenna or a set of multiple antennas.

[0134] The transmitter 715 may provide a means for transmitting signals generated by other components of the device 705. For example, the transmitter 715 may transmit information such as packets associated with various information channels (e.g., a control channel, a data channel, an information channel related to validation of resources associated with repetition-based linked downlink control channel candidates), user data, control information, or any combination thereof. In some examples, the transmitter 715 may be collocated with the receiver 710 in a transceiver module. The transmitter 715 may utilize a single antenna or a set of multiple antennas.

[0135] The device 705, or various components thereof, may be an example of a means for performing various aspects of validating resources associated with repetition-based linked downlink control channel candidates as described herein. For example, the communications manager 720 may include a PDCCH configuration interface 725, a DCI decoding component 730, a communications interface 735, or any combination thereof. The communications manager 720 may be an example of an aspect of the communications manager 620 described herein. In some examples, the communications manager 720, or various components thereof, may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or possibly cooperating with the receiver 710, the transmitter 715, or both. For example, the communications manager 720 may receive information from the receiver 710, send information to the transmitter 715, or be integrated in combination with the receiver 710, the transmitter 715, or both to receive information, transmit information, or perform various other operations described herein.

[0136] The communications manager 720 may support wireless communications in a UE according to examples disclosed herein. The PDCCH configuration interface 725 may be configured as a means for receiving, or otherwise supporting, an indication from a base station that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, where the first downlink control channel candidate is received, at least in part, before the second downlink control channel candidate. The DCI decoding component 730 may be configured as a means for decoding downlink control information from at least one of the first downlink control channel candidate or the second downlink control channel candidate, where the downlink control information may be configured as a means for scheduling, decoding, or otherwise supporting resources of a downlink shared channel in a transmission time interval that includes at least the second downlink control channel candidate. The communications interface 735 may be configured as or otherwise support a means for receiving a downlink message on a resource based on a confirmation rule being satisfied that is associated with the first downlink control channel candidate and the second downlink control channel candidate being linked, the confirmation rule being that at least one of the first downlink control channel candidate or the second downlink control channel candidate is within a threshold number of symbols at a start of a transmission time interval in which the resource is scheduled.

[0137] Additionally or alternatively, the communications manager 720 may support wireless communications in the UE according to examples disclosed herein. The PDCCH configuration interface 725 may be configured as or otherwise support a means for receiving an indication from a base station that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, where the first downlink control channel candidate is received, at least in part, before the second downlink control channel candidate. The DCI decoding component 730 may be configured as or otherwise support a means for decoding downlink control information from at least one of the first downlink control channel candidate or the second downlink control channel candidate, where the downlink control information includes a channel state information request. The communications interface 735 may be configured as or otherwise support a means for transmitting a channel state information report to a base station based on a confirmation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied, the confirmation rule being that the reference signal resource associated with the channel state information request is located at least after the starting symbol of the first downlink control channel candidate.

[0138] FIG. 8 illustrates a block diagram 800 of a communications manager 820 supporting validation of resources associated with repetition-based linked downlink control channel candidates according to an aspect of the disclosure. Communications manager 820 may be an example of an aspect of communications manager 620, communications manager 720, or both, described herein. Communications manager 820, or various components thereof, may be an example of a means for performing various aspects of validating resources associated with repetition-based linked downlink control channel candidates, as described herein. For example, communications manager 820 may include a PDCCH configuration interface 825, a DCI decoding component 830, a communications interface 835, a PDCCH configuration component 840, a rule application component 845, a resource identification component 850, or any combination thereof. Each of these components may be in direct or indirect communication with one another (e.g., via one or more buses).

[0139] The communications manager 820 may support wireless communications in the UE according to examples disclosed herein. The PDCCH configuration interface 825 may be configured as a means for receiving, or otherwise supporting, an indication from a base station that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, the first downlink control channel candidate being received, at least in part, before the second downlink control channel candidate. The DCI decoding component 830 may be configured as a means for decoding downlink control information from at least one of the first downlink control channel candidate or the second downlink control channel candidate, the downlink control information scheduling, decoding resources of a downlink shared channel in a transmission time interval including at least the second downlink control channel candidate. The communications interface 835 may be configured as or otherwise support a means for receiving a downlink message on a resource based on a confirmation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied, the confirmation rule being that at least one of the first downlink control channel candidate or the second downlink control channel candidate is within a threshold number of symbols at a start of a transmission time interval in which the resource is scheduled.

[0140] In some examples, the transmission time interval is the second transmission time interval and the PDCCH configuration component 840 may be configured as or otherwise support a means for determining that the first downlink control channel candidate is located within a first transmission time interval preceding a second transmission time interval that includes the second downlink control channel candidate and resource. In some examples, the transmission time interval is the second transmission time interval and the rule application component 845 may be configured as or otherwise support a means for verifying that a confirmation rule is satisfied by the second downlink control channel candidate being located within a threshold number of symbols of the second transmission time interval based on determining that the first downlink control channel candidate is located within the first transmission time interval.

[0141] In some examples, the PDCCH configuration component 840 may be configured as or otherwise support a means for determining that both the first downlink control channel candidate and the second downlink control channel candidate are located within a transmission time interval in which resources are scheduled, and the confirmation rule is applicable based on the first downlink control channel candidate and the second downlink control channel candidate being located within the transmission time interval.

[0142] In some examples, to support verification, the rule application component 845 may be configured as or may otherwise support a means for verifying that a verification rule is satisfied by both the first downlink control channel candidate and the second downlink control channel candidate being located within a threshold number of symbols of the transmission time interval based on determining that both the first downlink control channel candidate and the second downlink control channel candidate are located within the transmission time interval.

[0143] In some examples, to support verification, the rule application component 845 may be configured as or may otherwise support a means for verifying that a verification rule is satisfied by at least one of the first downlink control channel candidate and the second downlink control channel candidate being located within a threshold number of symbols of the transmission time interval based on determining that both the first downlink control channel candidate and the second downlink control channel candidate are located within the transmission time interval.

[0144] In some examples, the DCI decoding component 830 may be configured as or otherwise support a means for determining that the downlink control information schedules resources of the downlink shared channel using Type A resource mapping, and the confirmation rules may be applicable based on which the downlink control information schedules resources using Type A resource mapping.

[0145] In some examples, to support receiving the indication, the PDCCH configuration component 840 may be configured as or otherwise support a means for receiving an indication via a radio resource control message that the first search space set and the second search space set are linked, and that the first downlink control channel candidate and the second downlink control channel candidate are linked based on the first search space set and the second search space set being linked.

[0146] In some examples, the threshold number of symbols is three.

[0147] Additionally or alternatively, the communications manager 820 may support wireless communications at the UE in accordance with examples disclosed herein. In some examples, the PDCCH configuration interface 825 may be configured as or otherwise support a means for receiving an indication from a base station that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, the first downlink control channel candidate being received, at least in part, before the second downlink control channel candidate. In some examples, the DCI decoding component 830 may be configured as or otherwise support a means for decoding downlink control information from at least one of the first downlink control channel candidate or the second downlink control channel candidate, the downlink control information including a channel state information request. In some examples, the communications interface 835 may be configured as or otherwise support a means for transmitting a channel state information report to a base station based on a confirmation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied, the confirmation rule being that the reference signal resource associated with the channel state information request is located at least after the starting symbol of the first downlink control channel candidate.

[0148] In some examples, the rule application component 845 may be configured as or may otherwise support a means for verifying that a confirmation rule is satisfied based on the first downlink control channel candidate and the second downlink control channel candidate being linked, by the reference signal resource being located after the starting symbol of the second downlink control channel candidate.

[0149] In some examples, the rule application component 845 may be configured as or otherwise support a means for verifying that a confirmation rule is satisfied by the reference signal resource being located after the starting symbol of only the first downlink control channel candidate based on the first downlink control channel candidate and the second downlink control channel candidate being linked and the first downlink control channel candidate being received before the second downlink control channel candidate.

[0150] In some examples, to support receipt of the indication, the PDCCH configuration interface 825 may be configured as or otherwise support a means for receiving an indication via a radio resource control message that the first search space set and the second search space set are linked, and that the first downlink control channel candidate and the second downlink control channel candidate are linked based on the first search space set and the second search space set being linked.

[0151] In some examples, resource identification component 850 may be configured as or otherwise support a means for determining reference signal resources based on a channel state information request included in the downlink control information.

[0152] FIG. 9 illustrates a diagram of a system 900 including a device 905 supporting validation of resources associated with repetition-based linked downlink control channel candidates according to an aspect of the disclosure. The device 905 may be an example of or may include components of a device 605, a device 705, or a UE 115 as described herein. The device 905 may wirelessly communicate with one or more base stations 105, UEs 115, or any combination thereof. The device 905 may include components for two-way voice and data communications, including components for transmitting and receiving communications, such as a communications manager 920, an input / output (I / O) controller 910, a transceiver 915, an antenna 925, a memory 930, code 935, and a processor 940. These components may be in electronic communication or may be coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., bus 945).

[0153] The I / O controller 910 may manage input and output signals for the device 905. The I / O controller 910 may also manage peripheral devices that are not built into the device 905. In some cases, the I / O controller 910 may represent a physical connection or port to an external peripheral device. In some cases, the I / O controller 910 may utilize an operating system, such as iOS®, ANDROID®, MS-DOS®, MS-WINDOWS®, OS / 2®, UNIX®, LINUX®, or another known operating system. Additionally or alternatively, the I / O controller 910 may represent or interact with a modem, keyboard, mouse, touch screen, or similar device. In some cases, the I / O controller 910 may be implemented as part of a processor, such as the processor 940. In some cases, a user may interact with the device 905 through the I / O controller 910 or through hardware components controlled by the I / O controller 910.

[0154] In some cases, the device 905 may include a single antenna 925. However, in some other cases, the device 905 may have two or more antennas 925, which may be capable of simultaneously transmitting or receiving multiple wireless transmissions. The transceiver 915 may communicate bidirectionally via one or more antennas 925, a wired link, or a wireless link, as described herein. For example, the transceiver 915 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. The transceiver 915 may also include a modem for modulating packets, providing the modulated packets to the one or more antennas 925 for transmission, and demodulating packets received from the one or more antennas 925. The transceiver 915, or the transceiver 915 and the one or more antennas 925, may be an example of the transmitter 615, the transmitter 715, the receiver 610, the receiver 710, or any combination or components thereof, as described herein.

[0155] The memory 930 may include random access memory (RAM) and read only memory (ROM). The memory 930 may store computer readable, computer executable code 935 including instructions that, when executed by the processor 940, cause the device 905 to perform various functions described herein. The code 935 may be stored in a non-transitory computer readable medium, such as a system memory or another type of memory. In some cases, the code 935 may not be directly executable by the processor 940, but may (e.g., when compiled and executed) cause the computer to perform the functions described herein. In some cases, the memory 930 may include a basic I / O system (BIOS) that may control basic hardware or software operations, such as interaction with peripheral components or devices, among other things.

[0156] The processor 940 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, the processor 940 may be configured to operate a memory array using a memory controller. In some other cases, the memory controller may be incorporated into the processor 940. The processor 940 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 930) to cause the device 905 to perform various functions (e.g., functions or tasks supporting validation of resources associated with repetition-based linked downlink control channel candidates). For example, the device 905 or a component of the device 905 may include a processor 940 and a memory 930 coupled to the processor 940, where the processor 940 and the memory 930 are configured to perform various functions described herein.

[0157] The communications manager 920 may support wireless communications in a UE according to examples disclosed herein. For example, the communications manager 920 may be configured as a means for receiving, or otherwise supporting, an indication from a base station that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, the first downlink control channel candidate being received, at least in part, before the second downlink control channel candidate. The communications manager 920 may be configured as a means for decoding downlink control information from at least one of the first downlink control channel candidate or the second downlink control channel candidate, the downlink control information scheduling, decoding resources of a downlink shared channel in a transmission time interval including at least the second downlink control channel candidate. The communications manager 920 may be configured as or otherwise support a means for receiving a downlink message at a resource based on a confirmation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied, the confirmation rule being that at least one of the first downlink control channel candidate or the second downlink control channel candidate is within a threshold number of symbols at a start of a transmission time interval in which the resource is scheduled.

[0158] Additionally or alternatively, the communications manager 920 may support wireless communications at the UE in accordance with examples disclosed herein. For example, the communications manager 920 may be configured as or otherwise support a means for receiving an indication from a base station that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, where the first downlink control channel candidate is received, at least in part, before the second downlink control channel candidate. The communications manager 920 may be configured as or otherwise support a means for decoding downlink control information from at least one of the first downlink control channel candidate or the second downlink control channel candidate, where the downlink control information includes a channel state information request. The communications manager 920 may be configured as or otherwise support a means for transmitting a channel state information report to a base station based on a confirmation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied, the confirmation rule being that the reference signal resource associated with the channel state information request is located at least after the starting symbol of the first downlink control channel candidate.

[0159] By including or configuring a communications manager 920 in accordance with examples described herein, the device 905 may support techniques for improving communications reliability by verifying that resources are processable by a device such as a UE, and thus may result in more efficient utilization of communications resources and processing power.

[0160] In some examples, the communications manager 920 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using, or possibly in cooperation with, the transceiver 915, the one or more antennas 925, or a combination thereof. Although the communications manager 920 is shown as a separate component, in some examples, one or more functions described with respect to the communications manager 920 may be supported or performed by the processor 940, the memory 930, the code 935, or a combination thereof. For example, the code 935 may include instructions executable by the processor 940 to cause the device 905 to perform various aspects of validating resources associated with the repetition-based linked downlink control channel candidates described herein, or the processor 940 and the memory 930 may be configured to perform or support such operations, as the case may be.

[0161] 10 illustrates a block diagram 1000 of a device 1005 supporting validation of resources associated with repetition-based linked downlink control channel candidates according to an aspect of the disclosure. The device 1005 may be an example of an aspect of a base station 105 as described herein. The device 1005 may include a receiver 1010, a transmitter 1015, and a communications manager 1020. The device 1005 may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses).

[0162] The receiver 1010 may provide a means for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to validation of resources associated with repetition-based linked downlink control channel candidates). The information may be passed to other components of the device 1005. The receiver 1010 may use a single antenna or a set of multiple antennas.

[0163] The transmitter 1015 may provide a means for transmitting signals generated by other components of the device 1005. For example, the transmitter 1015 may transmit information such as packets associated with various information channels (e.g., a control channel, a data channel, an information channel related to validation of resources associated with repetition-based linked downlink control channel candidates), user data, control information, or any combination thereof. In some examples, the transmitter 1015 may be collocated with the receiver 1010 in a transceiver module. The transmitter 1015 may utilize a single antenna or a set of multiple antennas.

[0164] The communications manager 1020, the receiver 1010, the transmitter 1015, or various combinations or components thereof may be examples of means for performing various aspects of validating resources associated with repetition-based linked downlink control channel candidates as described herein. For example, the communications manager 1020, the receiver 1010, the transmitter 1015, or various combinations or components thereof may support a method for performing one or more of the functions described herein.

[0165] In some examples, the communications manager 1020, the receiver 1010, the transmitter 1015, or various combinations or components thereof may be implemented in hardware (e.g., in a communications management circuit). The hardware may include a processor, a DSP, an ASIC, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as or possibly supporting means for performing the functions described in this disclosure. In some examples, the processor and a memory coupled to the processor may be configured to perform one or more of the functions described herein (e.g., by the processor executing instructions stored in the memory).

[0166] Additionally or alternatively, in some examples, the communications manager 1020, the receiver 1010, the transmitter 1015, or various combinations or components thereof may be implemented in code executed by a processor (e.g., as communications management software or firmware). If implemented in code executed by a processor, the functions of the communications manager 1020, the receiver 1010, the transmitter 1015, or various combinations or components thereof may be performed by a general purpose processor, a DSP, a CPU, an ASIC, an FPGA, or any combination of these or other programmable logic devices (e.g., configured as or in some cases supporting a means for performing the functions described in this disclosure).

[0167] In some examples, the communications manager 1020 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using, or possibly in cooperation with, the receiver 1010, the transmitter 1015, or both. For example, the communications manager 1020 may receive information from the receiver 1010, send information to the transmitter 1015, or be integrated in combination with the receiver 1010, the transmitter 1015, or both to receive information, transmit information, or perform various other operations described herein.

[0168] The communications manager 1020 may support wireless communications in a base station according to examples disclosed herein. For example, the communications manager 1020 may be configured as or otherwise support a means for transmitting to the UE an indication that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, the first downlink control channel candidate being transmitted, at least in part, before the second downlink control channel candidate. The communications manager 1020 may be configured as or otherwise support a means for transmitting to the UE, via the first downlink control channel candidate and the second downlink control channel candidate, downlink control information that schedules resources of the downlink shared channel in a transmission time interval that includes at least the second downlink control channel candidate. The communications manager 1020 may be configured as or otherwise support a means for transmitting a downlink message on a resource based on a confirmation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied, the confirmation rule being that at least one of the first downlink control channel candidate or the second downlink control channel candidate is within a threshold number of symbols at the start of a transmission time interval in which the resource is scheduled.

[0169] Additionally or alternatively, the communications manager 1020 may support wireless communications at the base station according to examples disclosed herein. For example, the communications manager 1020 may be configured as or otherwise support a means for transmitting to the UE an indication that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, the first downlink control channel candidate being transmitted, at least in part, before the second downlink control channel candidate. The communications manager 1020 may be configured as or otherwise support a means for transmitting downlink control information, including a channel state information request, to the UE via the first downlink control channel candidate and the second downlink control channel candidate. The communications manager 1020 may be configured as or otherwise support a means for receiving from the UE a channel state information report based on a confirmation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied, the confirmation rule being that the reference signal resource associated with the channel state information request is located at least after the starting symbol of the first downlink control channel candidate.

[0170] By including or configuring the communications manager 1020 according to the examples described herein, the device 1005 (e.g., a processor controlling or possibly coupled to the receiver 1010, the transmitter 1015, the communications manager 1020, or a combination thereof) may support techniques for reducing processing by verifying that the resources do not increase processing complexity, and thus may result in efficient utilization of communications resources.

[0171] 11 illustrates a block diagram 1100 of a device 1105 supporting validation of resources associated with repetition-based linked downlink control channel candidates according to an aspect of the disclosure. The device 1105 may be an example of an aspect of a device 1005 or a base station 105 as described herein. The device 1105 may include a receiver 1110, a transmitter 1115, and a communications manager 1120. The device 1105 may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses).

[0172] The receiver 1110 may provide a means for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to validation of resources associated with repetition-based linked downlink control channel candidates). The information may be passed to other components of the device 1105. The receiver 1110 may use a single antenna or a set of multiple antennas.

[0173] The transmitter 1115 may provide a means for transmitting signals generated by other components of the device 1105. For example, the transmitter 1115 may transmit information such as packets associated with various information channels (e.g., a control channel, a data channel, an information channel related to validation of resources associated with repetition-based linked downlink control channel candidates), user data, control information, or any combination thereof. In some examples, the transmitter 1115 may be collocated with the receiver 1110 in a transceiver module. The transmitter 1115 may utilize a single antenna or a set of multiple antennas.

[0174] The device 1105, or various components thereof, may be an example of a means for performing various aspects of validating resources associated with repetition-based linked downlink control channel candidates as described herein. For example, the communications manager 1120 may include a PDCCH configuration interface 1125, a DCI interface 1130, a communications interface 1135, or any combination thereof. The communications manager 1120 may be an example of an aspect of the communications manager 1020 described herein. In some examples, the communications manager 1120, or various components thereof, may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or possibly cooperating with the receiver 1110, the transmitter 1115, or both. For example, the communications manager 1120 may receive information from the receiver 1110, send information to the transmitter 1115, or be integrated in combination with the receiver 1110, the transmitter 1115, or both to receive information, transmit information, or perform various other operations described herein.

[0175] The communications manager 1120 may support wireless communications in a base station according to examples disclosed herein. The PDCCH configuration interface 1125 may be configured as or may otherwise support a means for transmitting to the UE an indication that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, the first downlink control channel candidate being transmitted, at least in part, before the second downlink control channel candidate. The DCI interface 1130 may be configured as or may otherwise support a means for transmitting to the UE downlink control information via the first downlink control channel candidate and the second downlink control channel candidate that schedules resources of the downlink shared channel in a transmission time interval that includes at least the second downlink control channel candidate. The communications interface 1135 may be configured as or otherwise support a means for transmitting a downlink message on a resource based on a confirmation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied, the confirmation rule being that at least one of the first downlink control channel candidate or the second downlink control channel candidate is within a threshold number of symbols at a start of a transmission time interval in which the resource is scheduled.

[0176] Additionally or alternatively, the communications manager 1120 may support wireless communications in the base station according to examples disclosed herein. The PDCCH configuration interface 1125 may be configured as or otherwise support a means for transmitting an indication to the UE that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, the first downlink control channel candidate being transmitted, at least in part, before the second downlink control channel candidate. The DCI interface 1130 may be configured as or otherwise support a means for transmitting downlink control information, including a channel state information request, to the UE via the first downlink control channel candidate and the second downlink control channel candidate. The communications interface 1135 may be configured as or otherwise support a means for receiving from the UE a channel state information report based on a confirmation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied, the confirmation rule being that the reference signal resource associated with the channel state information request is located at least after the starting symbol of the first downlink control channel candidate.

[0177] FIG. 12 illustrates a block diagram 1200 of a communications manager 1220 supporting validation of resources associated with repetition-based linked downlink control channel candidates according to aspects of the disclosure. Communications manager 1220 may be an example of aspects of communications manager 1020, communications manager 1120, or both, as described herein. Communications manager 1220, or various components thereof, may be an example of a means for performing various aspects of validating resources associated with repetition-based linked downlink control channel candidates, as described herein. For example, communications manager 1220 may include a PDCCH configuration interface 1225, a DCI interface 1230, a communications interface 1235, a PDCCH configuration component 1240, a rules application component 1245, or any combination thereof. Each of these components may be in direct or indirect communication with one another (e.g., via one or more buses).

[0178] The communications manager 1220 may support wireless communications in the base station according to examples disclosed herein. The PDCCH configuration interface 1225 may be configured as or may otherwise support a means for transmitting to the UE an indication that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, the first downlink control channel candidate being transmitted, at least in part, before the second downlink control channel candidate. The DCI interface 1230 may be configured as or may otherwise support a means for transmitting to the UE, via the first downlink control channel candidate and the second downlink control channel candidate, downlink control information that schedules resources of the downlink shared channel in a transmission time interval that includes at least the second downlink control channel candidate. The communications interface 1235 may be configured as or otherwise support a means for transmitting a downlink message on a resource based on a confirmation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied, the confirmation rule being that at least one of the first downlink control channel candidate or the second downlink control channel candidate is within a threshold number of symbols at a start of a transmission time interval in which the resource is scheduled.

[0179] In some examples, the transmission time interval is the second transmission time interval and the PDCCH configuration component 1240 may be configured as or otherwise support a means for determining that the first downlink control channel candidate is located within a first transmission time interval preceding a second transmission time interval that includes the second downlink control channel candidate and resource. In some examples, the transmission time interval is the second transmission time interval and the rule application component 1245 may be configured as or otherwise support a means for verifying that a confirmation rule is satisfied by the second downlink control channel candidate being located within a threshold number of symbols of the second transmission time interval based on determining that the first downlink control channel candidate is located within the first transmission time interval.

[0180] In some examples, the PDCCH configuration component 1240 may be configured as or otherwise support a means for determining that both the first downlink control channel candidate and the second downlink control channel candidate are located within a transmission time interval in which resources are scheduled, and a confirmation rule is applicable based on the first downlink control channel candidate and the second downlink control channel candidate being located within the transmission time interval.

[0181] In some examples, to support verification, the rule application component 1245 may be configured as or may otherwise support a means for verifying that a verification rule is satisfied by both the first downlink control channel candidate and the second downlink control channel candidate being located within a threshold number of symbols of the transmission time interval based on determining that both the first downlink control channel candidate and the second downlink control channel candidate are located within the transmission time interval.

[0182] In some examples, to support verification, the rule application component 1245 may be configured as or may otherwise support a means for verifying that a verification rule is satisfied by at least one of the first downlink control channel candidate and the second downlink control channel candidate being located within a threshold number of symbols of the transmission time interval based on determining that both the first downlink control channel candidate and the second downlink control channel candidate are located within the transmission time interval.

[0183] In some examples, to support transmission of downlink control information, the DCI interface 1230 may be configured as a means for transmitting or otherwise support downlink control information that schedules resources of the downlink shared channel using Type A resource mapping, and confirmation rules may be applicable based on which the downlink control information schedules resources using Type A resource mapping.

[0184] In some examples, to support transmission of the indication, the PDCCH configuration interface 1225 may be configured as or otherwise support a means for transmitting, via a radio resource control message, an indication that the first search space set and the second search space set are linked, and that the first downlink control channel candidate and the second downlink control channel candidate are linked based on the first search space set and the second search space set being linked.

[0185] In some examples, the threshold number of symbols is three.

[0186] Additionally or alternatively, the communications manager 1220 may support wireless communications in the base station according to examples disclosed herein. In some examples, the PDCCH configuration interface 1225 may be configured as or otherwise support a means for transmitting an indication to the UE that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, the first downlink control channel candidate being transmitted, at least in part, before the second downlink control channel candidate. In some examples, the DCI interface 1230 may be configured as or otherwise support a means for transmitting downlink control information, including a channel state information request, to the UE via the first downlink control channel candidate and the second downlink control channel candidate. In some examples, the communications interface 1235 may be configured as or otherwise support a means for receiving from the UE a channel state information report based on a confirmation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied, the confirmation rule being that the reference signal resource associated with the channel state information request is located at least after the starting symbol of the first downlink control channel candidate.

[0187] In some examples, the rule application component 1245 may be configured as or may otherwise support a means for verifying that a confirmation rule is satisfied based on the first downlink control channel candidate and the second downlink control channel candidate being linked, by the reference signal resource being located after the starting symbol of the second downlink control channel candidate.

[0188] In some examples, the rule application component 1245 may be configured as or otherwise support a means for verifying that a confirmation rule is satisfied by the reference signal resource being located after the starting symbol of only the first downlink control channel candidate based on the first downlink control channel candidate and the second downlink control channel candidate being linked and the first downlink control channel candidate being transmitted before the second downlink control channel candidate.

[0189] In some examples, to support transmission of the indication, the PDCCH configuration interface 1225 may be configured as or otherwise support a means for transmitting, via a radio resource control message, an indication that the first search space set and the second search space set are linked, and that the first downlink control channel candidate and the second downlink control channel candidate are linked based on the first search space set and the second search space set being linked.

[0190] In some examples, the DCI interface 1230 may be configured or otherwise support as a means for indicating reference signal resources based on a channel state information request included in downlink control information.

[0191] FIG. 13 illustrates a diagram of a system 1300 including a device 1305 supporting validation of resources associated with repetition-based linked downlink control channel candidates according to aspects of the disclosure. The device 1305 may be an example of or may include components of a device 1005, device 1105, or base station 105 as described herein. The device 1305 may wirelessly communicate with one or more base stations 105, UEs 115, or any combination thereof. The device 1305 may include components for two-way voice and data communication, including components for transmitting and receiving communications, such as a communications manager 1320, a network communications manager 1310, a transceiver 1315, an antenna 1325, a memory 1330, code 1335, a processor 1340, and an inter-station communications manager 1345. These components may be in electronic communication or may be coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., a bus 1350).

[0192] The network communications manager 1310 may manage communications with the core network 130 (e.g., via one or more wired backhaul links). For example, the network communications manager 1310 may manage the forwarding of data communications for client devices, such as one or more UEs 115.

[0193] In some cases, the device 1305 may include a single antenna 1325. However, in some other cases, the device 1305 may have two or more antennas 1325, which may be capable of simultaneously transmitting or receiving multiple wireless transmissions. The transceiver 1315 may communicate bidirectionally via one or more antennas 1325, a wired link, or a wireless link, as described herein. For example, the transceiver 1315 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. The transceiver 1315 may also include a modem for modulating packets, providing the modulated packets to one or more antennas 1325 for transmission, and demodulating packets received from the one or more antennas 1325. The transceiver 1315, or the transceiver 1315 and one or more antennas 1325, may be an example of the transmitter 1015, the transmitter 1115, the receiver 1010, the receiver 1110, or any combination or components thereof, as described herein.

[0194] The memory 1330 may include RAM and ROM. The memory 1330 may store computer-readable, computer-executable code 1335 including instructions that, when executed by the processor 1340, cause the device 1305 to perform various functions described herein. The code 1335 may be stored in a non-transitory computer-readable medium, such as a system memory or another type of memory. In some cases, the code 1335 may not be directly executable by the processor 1340, but may (e.g., when compiled and executed) cause a computer to perform functions described herein. In some cases, the memory 1330 may include a BIOS, which may control basic hardware or software operations, such as interaction with peripheral components or devices, among other things.

[0195] 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, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, the processor 1340 may be configured to operate a memory array using a memory controller. In some other cases, the memory controller may be incorporated 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 validation of resources associated with repetition-based linked downlink control channel candidates). For example, the device 1305 or a component of the device 1305 may include the processor 1340 and the memory 1330 coupled to the processor 1340, where the processor 1340 and the memory 1330 are configured to perform various functions described herein.

[0196] The inter-station communications manager 1345 may manage communications with other base stations 105 and may include a controller or scheduler for controlling communications with the UE 115 in cooperation with the other base stations 105. For example, the inter-station communications manager 1345 may coordinate scheduling for transmissions to the UE 115 for various interference mitigation techniques, such as beamforming or joint transmission. In some examples, the inter-station communications manager 1345 may provide an X2 interface in LTE / LTE-A wireless communications network technology to communicate between the base stations 105.

[0197] The communications manager 1320 may support wireless communications in a base station according to examples disclosed herein. For example, the communications manager 1320 may be configured as or otherwise support a means for transmitting to the UE an indication that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, the first downlink control channel candidate being transmitted, at least in part, before the second downlink control channel candidate. The communications manager 1320 may be configured as or otherwise support a means for transmitting to the UE downlink control information via the first downlink control channel candidate and the second downlink control channel candidate that schedules resources of the downlink shared channel in a transmission time interval that includes at least the second downlink control channel candidate. The communications manager 1320 may be configured as or otherwise support a means for transmitting a downlink message on a resource based on a confirmation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied, the confirmation rule being that at least one of the first downlink control channel candidate or the second downlink control channel candidate is within a threshold number of symbols at the start of a transmission time interval in which the resource is scheduled.

[0198] Additionally or alternatively, the communications manager 1320 may support wireless communications at the base station according to examples disclosed herein. For example, the communications manager 1320 may be configured as or otherwise support a means for transmitting to the UE an indication that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, the first downlink control channel candidate being transmitted, at least in part, before the second downlink control channel candidate. The communications manager 1320 may be configured as or otherwise support a means for transmitting downlink control information, including a channel state information request, to the UE via the first downlink control channel candidate and the second downlink control channel candidate. The communications manager 1320 may be configured as or otherwise support a means for receiving from the UE a channel state information report based on a confirmation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied, the confirmation rule being that the reference signal resource associated with the channel state information request is located at least after the starting symbol of the first downlink control channel candidate.

[0199] By including or configuring a communications manager 1320 in accordance with the examples described herein, the device 1305 may support techniques for improving communications reliability by verifying that resources are processable by a device such as a UE, and thus may result in more efficient utilization of communications resources and processing power.

[0200] In some examples, the communications manager 1320 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using, or possibly in cooperation with, the transceiver 1315, the one or more antennas 1325, or a combination thereof. Although the communications manager 1320 is shown as a separate component, in some examples, one or more functions described with respect to the communications manager 1320 may be supported or performed by the processor 1340, the memory 1330, the code 1335, or a combination thereof. For example, the code 1335 may include instructions executable by the processor 1340 to cause the device 1305 to perform various aspects of validating resources associated with the repetition-based linked downlink control channel candidates described herein, or the processor 1340 and the memory 1330 may be configured to perform or support such operations, as the case may be.

[0201] FIG. 14 illustrates a flow chart illustrating a method 1400 for supporting validation of resources associated with repetition-based linked downlink control channel candidates according to aspects of the disclosure. The operations of method 1400 may be performed by a UE or components thereof as described herein. For example, the operations of method 1400 may be performed by a UE 115 as described with reference to FIGS. 1-9. In some examples, the UE may execute a set of instructions to control functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform aspects of the described functions.

[0202] At 1405, the method may include receiving an indication from a base station that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, the first downlink control channel candidate being received, at least in part, before the second downlink control channel candidate. The operations of 1405 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1405 may be performed by a PDCCH configuration interface 825 as described with reference to FIG. 8.

[0203] At 1410, the method may include decoding downlink control information from at least one of a first downlink control channel candidate or a second downlink control channel candidate, the downlink control information scheduling resources of a downlink shared channel in a transmission time interval that includes at least the second downlink control channel candidate. The operations of 1410 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1410 may be performed by a DCI decoding component 830 as described with reference to FIG. 8.

[0204] At 1415, the method may include receiving a downlink message on the resource based on a validation rule being satisfied that is associated with the first downlink control channel candidate and the second downlink control channel candidate being linked, the validation rule being that at least one of the first downlink control channel candidate or the second downlink control channel candidate is within a threshold number of symbols at a start of a transmission time interval in which the resource is scheduled. The operations of 1415 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1415 may be performed by a communication interface 835 as described with reference to FIG.

[0205] FIG. 15 illustrates a flow chart illustrating a method 1500 for supporting validation of resources associated with repetition-based linked downlink control channel candidates according to aspects of the disclosure. The operations of method 1500 may be implemented by a UE or components thereof as described herein. For example, the operations of method 1500 may be performed by a UE 115 as described with reference to FIGS. 1-9. In some examples, the UE may execute a set of instructions to control functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform aspects of the described functions.

[0206] At 1505, the method may include receiving an indication from the base station that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, the first downlink control channel candidate being received, at least in part, before the second downlink control channel candidate. The operations of 1505 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1505 may be performed by a PDCCH configuration interface 825 as described with reference to FIG. 8.

[0207] At 1510, the method may include decoding downlink control information from at least one of a first downlink control channel candidate or a second downlink control channel candidate, the downlink control information including a channel state information request. The operations of 1510 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1510 may be performed by a DCI decoding component 830 as described with reference to FIG.

[0208] At 1515, the method may include transmitting a channel state information report to the base station based on a confirmation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied, the confirmation rule being that a reference signal resource associated with the channel state information request is located after at least a starting symbol of the first downlink control channel candidate. The operations of 1515 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1515 may be performed by a communication interface 835 as described with reference to FIG. 8.

[0209] FIG. 16 illustrates a flow chart illustrating a method 1600 for supporting validation of resources associated with repetition-based linked downlink control channel candidates according to aspects of the disclosure. The operations of the method 1600 may be implemented by a base station or components thereof as described herein. For example, the operations of the method 1600 may be performed by a base station 105 as described with reference to FIGS. 1-5 and 10-13. In some examples, the base station may execute a set of instructions to control functional elements of the base station to perform the described functions. Additionally or alternatively, the base station may use dedicated hardware to perform aspects of the described functions.

[0210] At 1605, the method may include transmitting an indication to the UE that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, the first downlink control channel candidate being transmitted at least in part before the second downlink control channel candidate. The operations of 1605 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1605 may be performed by a PDCCH configuration interface 1225 as described with reference to FIG. 12.

[0211] At 1610, the method may include transmitting downlink control information to the UE via the first downlink control channel candidate and the second downlink control channel candidate, the downlink control information scheduling resources of the downlink shared channel in a transmission time interval including at least the second downlink control channel candidate. The operations of 1610 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1610 may be performed by a DCI interface 1230 as described with reference to FIG.

[0212] At 1615, the method may include transmitting a downlink message on the resource based on a validation rule being satisfied that is associated with the first downlink control channel candidate and the second downlink control channel candidate being linked, the validation rule being that at least one of the first downlink control channel candidate or the second downlink control channel candidate is within a threshold number of symbols at a beginning of a transmission time interval in which the resource is scheduled. The operations of 1615 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1615 may be performed by a communication interface 1235 as described with reference to FIG. 12.

[0213] FIG. 17 illustrates a flow chart illustrating a method 1700 for supporting validation of resources associated with repetition-based linked downlink control channel candidates according to aspects of the disclosure. The operations of method 1700 may be implemented by a base station or components thereof as described herein. For example, the operations of method 1700 may be performed by a base station 105 as described with reference to FIGS. 1-5 and 10-13. In some examples, the base station may execute a set of instructions to control functional elements of the base station to perform the described functions. Additionally or alternatively, the base station may use dedicated hardware to perform aspects of the described functions.

[0214] At 1705, the method may include transmitting an indication to the UE that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, the first downlink control channel candidate being transmitted at least in part before the second downlink control channel candidate. The operations of 1705 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1705 may be performed by a PDCCH configuration interface 1225 as described with reference to FIG. 12.

[0215] At 1710, the method may include transmitting downlink control information including a channel state information request to the UE via the first downlink control channel candidate and the second downlink control channel candidate. The operations of 1710 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1710 may be performed by a DCI interface 1230 as described with reference to FIG.

[0216] At 1715, the method may include receiving a channel state information report from the UE based on a validation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied, the validation rule being that a reference signal resource associated with the channel state information request is located after at least a starting symbol of the first downlink control channel candidate. The operations of 1715 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1715 may be performed by a communication interface 1235 as described with reference to FIG. 12.

[0217] The following provides a summary of aspects of the disclosure.

[0218] Aspect 1: A method for wireless communications in a UE, comprising: receiving an indication from a base station that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, the first downlink control channel candidate being received, at least in part, before the second downlink control channel candidate; decoding downlink control information from at least one of the first downlink control channel candidate or the second downlink control channel candidate, the downlink control information scheduling resources of a downlink shared channel in a transmission time interval including at least the second downlink control channel candidate; and receiving a downlink message at the resource based at least in part on a confirmation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied, the confirmation rule being that at least one of the first downlink control channel candidate or the second downlink control channel candidate is within a threshold number of symbols at a start of the transmission time interval in which the resource is scheduled.

[0219] Aspect 2: The method of aspect 1, wherein the transmission time interval is a second transmission time interval, and the method further includes: determining that the first downlink control channel candidate is located within a first transmission time interval preceding a second transmission time interval that includes the second downlink control channel candidate and resource; and verifying, based at least in part on determining that the first downlink control channel candidate is located within the first transmission time interval, that the second downlink control channel candidate is located within a threshold number of symbols of the second transmission time interval, thereby satisfying a confirmation rule.

[0220] Aspect 3: The method of aspect 1, further comprising: determining that both the first downlink control channel candidate and the second downlink control channel candidate are located within a transmission time interval in which resources are scheduled, and determining that the confirmation rule is applicable based at least in part on the first downlink control channel candidate and the second downlink control channel candidate being located within the transmission time interval.

[0221] Aspect 4: The method of aspect 3, wherein the verifying step includes verifying that a confirmation rule is satisfied by both the first downlink control channel candidate and the second downlink control channel candidate being located within a threshold number of symbols of the transmission time interval, based at least in part on determining that both the first downlink control channel candidate and the second downlink control channel candidate are located within the transmission time interval.

[0222] Aspect 5: The apparatus of any one of aspects 3 to 4, wherein the verifying step includes verifying that a confirmation rule is satisfied by at least one of the first downlink control channel candidate and the second downlink control channel candidate being located within a threshold number of symbols of the transmission time interval, based at least in part on determining that both the first downlink control channel candidate and the second downlink control channel candidate are located within the transmission time interval.

[0223] Aspect 6: The method of any one of aspects 1 to 5, further comprising: determining that the downlink control information schedules resources of a downlink shared channel using type A resource mapping, and determining that a confirmation rule is applicable based at least in part on the downlink control information scheduling resources using type A resource mapping.

[0224] Aspect 7: The method of any one of aspects 1 to 6, wherein the step of receiving an indication includes a step of receiving an indication via a radio resource control message that the first search space set and the second search space set are linked, and the first downlink control channel candidate and the second downlink control channel candidate are linked based at least in part on the first search space set and the second search space set being linked.

[0225] Aspect 8: The method of any one of aspects 1 to 7, wherein the threshold number of symbols is three.

[0226] Aspect 9: A method for wireless communications in a UE, comprising: receiving an indication from a base station that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, the first downlink control channel candidate being received, at least in part, before the second downlink control channel candidate; decoding downlink control information from at least one of the first downlink control channel candidate or the second downlink control channel candidate, the downlink control information including a channel state information request; and transmitting a channel state information report to the base station based, at least in part, on a confirmation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied, the confirmation rule being that a reference signal resource associated with the channel state information request is located at least after a starting symbol of the first downlink control channel candidate.

[0227] Aspect 10: The method of aspect 9, further comprising verifying, based at least in part on the first downlink control channel candidate and the second downlink control channel candidate being linked, that a confirmation rule is satisfied by the reference signal resource being located after the starting symbol of the second downlink control channel candidate.

[0228] Aspect 11: The method of aspect 9, further comprising: verifying, based at least in part on the first downlink control channel candidate being linked with the second downlink control channel candidate and the first downlink control channel candidate being received before the second downlink control channel candidate, that a confirmation rule is satisfied by the reference signal resource being located after the starting symbol of only the first downlink control channel candidate.

[0229] Aspect 12: The method of any one of aspects 9 to 11, wherein the step of receiving an indication includes a step of receiving an indication via a radio resource control message that the first search space set and the second search space set are linked, and the first downlink control channel candidate and the second downlink control channel candidate are linked based at least in part on the first search space set and the second search space set being linked.

[0230] Aspect 13: The apparatus of any one of aspects 9 to 12, further comprising determining a reference signal resource based at least in part on a channel state information request included in the downlink control information.

[0231] Aspect 14: A method for wireless communication in a base station, comprising: transmitting an indication to a UE that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, the first downlink control channel candidate being transmitted, at least in part, before the second downlink control channel candidate; transmitting downlink control information to the UE via the first downlink control channel candidate and the second downlink control channel candidate, scheduling resources of a downlink shared channel in a transmission time interval including at least the second downlink control channel candidate; and transmitting a downlink message on the resource based, at least in part, on a confirmation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied, the confirmation rule being that at least one of the first downlink control channel candidate or the second downlink control channel candidate is within a threshold number of symbols at a start of the transmission time interval in which the resource is scheduled.

[0232] Aspect 15: The method of aspect 14, wherein the transmission time interval is a second transmission time interval, the method further including: determining that the first downlink control channel candidate is located within a first transmission time interval preceding a second transmission time interval including the second downlink control channel candidate and resource; and verifying, based at least in part on determining that the first downlink control channel candidate is located within the first transmission time interval, that the second downlink control channel candidate is located within a threshold number of symbols of the second transmission time interval, thereby satisfying a confirmation rule.

[0233] Aspect 16: The method of aspect 14, further comprising: determining that both the first downlink control channel candidate and the second downlink control channel candidate are located within a transmission time interval in which the resource is scheduled, the confirmation rule being applicable based at least in part on the first downlink control channel candidate and the second downlink control channel candidate being located within the transmission time interval.

[0234] Aspect 17: The method of aspect 16, wherein the verifying step includes verifying that a confirmation rule is satisfied by both the first downlink control channel candidate and the second downlink control channel candidate being located within a threshold number of symbols of the transmission time interval, based at least in part on determining that both the first downlink control channel candidate and the second downlink control channel candidate are located within the transmission time interval.

[0235] Aspect 18: The method of any one of aspects 16 to 17, wherein the verifying step includes verifying that a confirmation rule is satisfied by at least one of the first downlink control channel candidate and the second downlink control channel candidate being located within a threshold number of symbols of the transmission time interval, based at least in part on determining that both the first downlink control channel candidate and the second downlink control channel candidate are located within the transmission time interval.

[0236] Aspect 19: The method of any one of aspects 14 to 18, wherein the step of transmitting downlink control information includes a step of transmitting downlink control information that schedules resources of a downlink shared channel using type A resource mapping, and the confirmation rule is applicable based at least in part on the downlink control information scheduling resources using type A resource mapping.

[0237] Aspect 20: The method of any one of aspects 14 to 19, wherein the step of transmitting an indication includes a step of transmitting, via a radio resource control message, an indication that the first search space set and the second search space set are linked, and the first downlink control channel candidate and the second downlink control channel candidate are linked based at least in part on the first search space set and the second search space set being linked.

[0238] Example 21: The method of any one of examples 14 to 20, wherein the threshold number of symbols is three.

[0239] Aspect 22: A method for wireless communications in a base station, comprising: transmitting, to a UE, an indication that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, the first downlink control channel candidate being transmitted, at least in part, before the second downlink control channel candidate; transmitting downlink control information to the UE via the first downlink control channel candidate and the second downlink control channel candidate, the downlink control information including a channel state information request; and receiving from the UE a channel state information report based, at least in part, on a confirmation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied, the confirmation rule being that a reference signal resource associated with the channel state information request is located at least after a starting symbol of the first downlink control channel candidate.

[0240] Aspect 23: The method of aspect 22, further comprising verifying, based at least in part on the first downlink control channel candidate and the second downlink control channel candidate being linked, that a confirmation rule is satisfied by the reference signal resource being located after the starting symbol of the second downlink control channel candidate.

[0241] Aspect 24: The method of aspect 22, further comprising verifying, based at least in part on the first downlink control channel candidate and the second downlink control channel candidate being linked and the first downlink control channel candidate being transmitted before the second downlink control channel candidate, that a confirmation rule is satisfied by the reference signal resource being located after the starting symbol of only the first downlink control channel candidate.

[0242] Aspect 25: The method of any one of aspects 22 to 24, wherein the step of transmitting an indication includes a step of transmitting, via a radio resource control message, an indication that the first search space set and the second search space set are linked, and the first downlink control channel candidate and the second downlink control channel candidate are linked based at least in part on the first search space set and the second search space set being linked.

[0243] Aspect 26: The method of any one of aspects 22 to 25, further comprising indicating a reference signal resource based at least in part on a channel state information request included in the downlink control information.

[0244] Aspect 27: An apparatus for wireless communication in a UE, comprising a processor, a memory coupled to the processor, and instructions stored in the memory and executable by the processor to cause the apparatus to perform any of the methods of aspects 1 to 8.

[0245] Example 28: An apparatus for wireless communication in a UE, comprising at least one means for performing the method of any of Examples 1 to 8.

[0246] Aspect 29: A non-transitory computer-readable medium storing code for wireless communication in a UE, the code including instructions executable by a processor to perform any of the methods of aspects 1 to 8.

[0247] Aspect 30: An apparatus for wireless communication in a UE, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform any of the methods of aspects 9 to 13.

[0248] Aspect 31: An apparatus for wireless communication in a UE, comprising at least one means for performing the method of any of aspects 9-13.

[0249] Aspect 32: A non-transitory computer-readable medium storing code for wireless communication in a UE, the code comprising instructions executable by a processor to perform the method of any of aspects 9 to 13.

[0250] Aspect 33: An apparatus for wireless communication in a base station, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform any of the methods of aspects 14-21.

[0251] Example 34: An apparatus for wireless communication in a base station, comprising at least one means for performing the method of any of Examples 14-21.

[0252] Aspect 35: A non-transitory computer-readable medium storing code for wireless communication in a base station, the code comprising instructions executable by a processor to perform the method of any of aspects 14-21.

[0253] Aspect 36: An apparatus for wireless communication in a base station, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform any of the methods of aspects 22-26.

[0254] Example 37: An apparatus for wireless communication in a base station, comprising at least one means for performing the method of any of Examples 22-26.

[0255] Aspect 38: A non-transitory computer-readable medium storing code for wireless communication in a base station, the code comprising instructions executable by a processor to perform the method of any of aspects 22-26.

[0256] It should be noted that the methods described herein are descriptions of possible implementations, that the acts and steps may be rearranged or otherwise modified, and that other implementations are possible. Additionally, aspects from two or more of these methods may be combined.

[0257] Although aspects of LTE, LTE-A, LTE-A Pro, or NR systems may be described as examples, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used throughout much of the description, the techniques described herein may be applicable to other than LTE, LTE-A, LTE-A Pro, or NR networks. For example, the described techniques 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.

[0258] The information and signals described herein may be represented using any of a wide variety of technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referred to throughout the description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0259] The various example blocks and components described with respect to the disclosure herein may be implemented or performed using 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 alternatively, the processor may be any processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration).

[0260] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. When implemented in software executed by a processor, the functions may be stored on or transmitted via a computer-readable medium as one or more instructions or codes. Other examples and implementations are 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 implementing the functions may also be physically located in various locations, including being distributed such that parts of the functions are implemented in different physical locations.

[0261] Computer-readable media includes both non-transitory computer storage media and communication media, including any medium that facilitates transfer of a computer program from one place to another. Non-transitory storage media may be any available medium that can be accessed by a general purpose or special purpose computer. By way of example and not limitation, non-transitory computer-readable media may include RAM, ROM, Electrically Erasable Programmable ROM (EEPROM), Flash memory, Compact Disk (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that can be used to carry or store desired program code means in the form of instructions or data structures and that can be accessed by a general purpose or special purpose computer or a general purpose or special purpose processor. Also, any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included within the definition of computer-readable media. As used herein, disk and disc include CDs, laser discs, optical discs, digital versatile discs (DVDs), floppy disks, and Blu-ray discs, where disks typically reproduce data magnetically and discs reproduce data optically using lasers. Combinations of the above are also included within the scope of computer readable media.

[0262] As used herein, including in the claims, "or" as used in a list of items (e.g., a list of items beginning with a phrase such as "at least one of" or "one or more of") indicates an inclusive list, such as, 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). Also, the phrase "based on" as used herein should not be construed as a reference to a closed set of conditions. For example, an exemplary step described as "based on condition A" may be based on both condition A and condition B without departing from the scope of the present disclosure. In other words, the phrase "based on" as used herein is to be construed similarly to the phrase "based at least in part on."

[0263] The terms "determine" or "determining" encompass a wide variety of actions, and thus "determining" can include calculating, computing, processing, deriving, investigating, looking up (e.g., via a lookup in a table, database, or another data structure), ascertaining, etc. "Determining" can also include receiving (e.g., receiving information), accessing (e.g., accessing data in a memory), etc. "Determining" can also include resolving, selecting, choosing, establishing, and other similar acts.

[0264] In the accompanying figures, similar components or features may have the same reference label. Furthermore, various components of the same type may be distinguished by following the reference label with a dash and a second label that distinguishes the similar components. If only a first reference label is used herein, the description is applicable to any of the similar components having the same first reference label, regardless of the second reference label, or any other subsequent reference label.

[0265] The description set forth herein with respect to the accompanying drawings describes exemplary configurations and does not necessarily represent all examples that may be implemented or fall within the scope of the claims. As used herein, the term "exemplary" means "serving as an example, instance, or illustration" and does not mean "preferred" or "advantageous over other examples." The detailed description includes specific details for the purposes of providing an understanding of the described techniques. However, these techniques may 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.

[0266] The description herein is provided to enable any person skilled in the art to make or use the disclosure. Various modifications of the disclosure will be apparent to those skilled in the art, and the general principles defined herein may be applied to other variations without departing from the scope of the disclosure. Thus, the 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. [Explanation of symbols]

[0267] 100 Wireless communication system 105 Base station 110 Coverage Area 115 UE 120 backhaul links 125 Communication Links 130 Core Network 135 Device-to-Device (D2D) Communication Links 140 Access Network Entity 145 Access Network Transmission Entity 150 IP Services 200 Wireless Communication System 205 Communications 210 PDCCH 215 PDSCH 220 DMRS 225 Symbols 230 CSI-RS Resources 235 DCI 240 First Search Space Set 245 Second Search Space Set 250 Slots 305-a 1st TTI 305-b Second TTI 310-a 1st PDCCH candidate 310-b Second PDCCH candidate 315 PDSCH 320-a 1st PDCCH candidate 320-b Second PDCCH candidate 325 TTI 330 PDSCH 410-a 1st PDCCH candidate 410-b Second PDCCH candidate 415 CSI-RS Resources 605 Devices 610 Receiver 615 Transmitter 620 Communications Manager 705 Devices 710 Receiver 715 Transmitter 720 Communications Manager 725 PDCCH configuration interface 730 DCI Decoding Component 735 Communication Interface 820 Communications Manager 825 PDCCH configuration interface 830 DCI Decoding Component 835 Communication Interface 840 PDCCH Components 845 Rules Application Component 850 Resource Identification Components 900 System 905 Devices 910 Input / Output (I / O) Controller 915 Transceiver 920 Communications Manager 925 Antenna 930 Memory 935 Code 940 Processor 945 Bus 1005 Devices 1010 Receiver 1015 Transmitter 1020 Communications Manager 1105 Devices 1110 Receiver 1115 Transmitter 1120 Communications Manager 1125 PDCCH configuration interface 1130 DCI Interface 1135 Communication Interface 1220 Communications Manager 1225 PDCCH configuration interface 1230 DCI Interface 1235 Communication Interface 1240 PDCCH Component 1245 Rule Application Component 1305 Devices 1310 Network Communications Manager 1315 Transceiver 1320 Communications Manager 1325 Antenna 1330 Memory 1335 Code 1340 Processor 1345 Inter-Station Communications Manager 1350 Bus 1400 methods 1500 ways 1600 methods 1700 methods

Claims

1. 1. A method for wireless communication in a user equipment (UE), comprising: receiving, from a base station, an indication that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, the first downlink control channel candidate being received, at least in part, before the second downlink control channel candidate; decoding downlink control information from at least one of the first downlink control channel candidate or the second downlink control channel candidate, the downlink control information scheduling resources of a downlink shared channel in a transmission time interval that includes at least the second downlink control channel candidate; receiving a downlink message on the resource based at least in part on a validation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied, the validation rule being that at least one of the first downlink control channel candidate or the second downlink control channel candidate is within a threshold number of symbols at a start of the transmission time interval in which the resource is scheduled; The method includes:

2. determining that both the first downlink control channel candidate and the second downlink control channel candidate are located within the transmission time interval for which the resource is scheduled, and the checking rule is applicable based at least in part on the first downlink control channel candidate and the second downlink control channel candidate being located within the transmission time interval. The method of claim 1, further comprising:

3. verifying, based at least in part on determining that both the first downlink control channel candidate and the second downlink control channel candidate are located within the transmission time interval, that the validation rule is satisfied by both the first downlink control channel candidate and the second downlink control channel candidate being located within the threshold number of symbols of the transmission time interval.

3. The method of claim 2, further comprising:

4. verifying, based at least in part on determining that both the first downlink control channel candidate and the second downlink control channel candidate are located within the transmission time interval, that the validation rule is satisfied by at least one of the first downlink control channel candidate and the second downlink control channel candidate being located within the threshold number of symbols of the transmission time interval.

3. The method of claim 2, further comprising:

5. determining that the downlink control information schedules the resources of the downlink shared channel using a Type A resource mapping, and determining that the validation rule is applicable based at least in part on the downlink control information scheduling the resources using the Type A resource mapping. The method of claim 1, further comprising:

6. The method of claim 1 , wherein the threshold number of symbols is three.

7. The transmission time interval is a second transmission time interval, and the method further comprises: determining that the first downlink control channel candidate is located within a first transmission time interval that precedes the second transmission time interval that includes the second downlink control channel candidate and the resource; verifying, based at least in part on determining that the first downlink control channel candidate is located within the first transmission time interval, that the second downlink control channel candidate is located within the threshold number of symbols of the second transmission time interval, thereby satisfying the validation rule. The method of claim 1, further comprising:

8. The step of receiving the indication comprises: receiving an indication via a radio resource control message that the first search space set and the second search space set are linked, the first downlink control channel candidate and the second downlink control channel candidate being linked based at least in part on the first search space set and the second search space set being linked.

2. The method of claim 1, comprising:

9. 1. A method for wireless communication in a user equipment (UE), comprising: receiving, from a base station, an indication that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, the first downlink control channel candidate being received, at least in part, before the second downlink control channel candidate; decoding downlink control information from at least one of the first downlink control channel candidate or the second downlink control channel candidate, the downlink control information including a channel state information request; transmitting a channel state information report to the base station based at least in part on a validation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied, the validation rule being that a reference signal resource associated with the channel state information request is located at least after a starting symbol of the first downlink control channel candidate; The method includes:

10. verifying, based at least in part on the first downlink control channel candidate and the second downlink control channel candidate being linked, that the reference signal resource is located after a starting symbol of the second downlink control channel candidate, thereby satisfying the validation rule.

10. The method of claim 9, further comprising:

11. The step of receiving the indication comprises: receiving an indication via a radio resource control message that the first search space set and the second search space set are linked, the first downlink control channel candidate and the second downlink control channel candidate being linked based at least in part on the first search space set and the second search space set being linked.

10. The method of claim 9, comprising:

12. determining the reference signal resource based at least in part on the channel state information request included in the downlink control information.

10. The method of claim 9, further comprising:

13. 1. A method for wireless communication in a base station, comprising: transmitting, to a user equipment (UE), an indication that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, the first downlink control channel candidate being transmitted, at least in part, before the second downlink control channel candidate; transmitting downlink control information to the UE via the first downlink control channel candidate and the second downlink control channel candidate, the downlink control information scheduling resources of a downlink shared channel in a transmission time interval including at least the second downlink control channel candidate; transmitting a downlink message on the resource based at least in part on a validation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied, the validation rule being that at least one of the first downlink control channel candidate or the second downlink control channel candidate is within a threshold number of symbols at a start of the transmission time interval in which the resource is scheduled; The method includes:

14. A method for wireless communication in a base station, comprising: transmitting, to a user equipment (UE), an indication that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, the first downlink control channel candidate being transmitted, at least in part, before the second downlink control channel candidate; transmitting downlink control information including a channel state information request to the UE via the first downlink control channel candidate and the second downlink control channel candidate; receiving a channel state information report from the UE based at least in part on a validation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied, the validation rule being that a reference signal resource associated with the channel state information request is located at least after a starting symbol of the first downlink control channel candidate; The method includes:

15. An apparatus for wireless communication in a user equipment (UE), comprising: A processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor, the instructions causing the apparatus to: receiving an indication from a base station that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, the first downlink control channel candidate being received, at least in part, before the second downlink control channel candidate; decoding downlink control information from at least one of the first downlink control channel candidate or the second downlink control channel candidate, the downlink control information scheduling resources of a downlink shared channel in a transmission time interval that includes at least the second downlink control channel candidate; receiving a downlink message on the resource based at least in part on a validation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied, the validation rule being that at least one of the first downlink control channel candidate or the second downlink control channel candidate is within a threshold number of symbols at a start of the transmission time interval in which the resource is scheduled; To carry out Device.

16. An apparatus for wireless communication in a user equipment (UE), comprising: A processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor, the instructions causing the apparatus to: receiving an indication from a base station that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, the first downlink control channel candidate being received, at least in part, before the second downlink control channel candidate; decoding downlink control information from at least one of the first downlink control channel candidate or the second downlink control channel candidate, the downlink control information including a channel state information request; transmitting a channel state information report to the base station based at least in part on a validation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied, the validation rule being that a reference signal resource associated with the channel state information request is located at least after a starting symbol of the first downlink control channel candidate; To carry out Device.

17. An apparatus for wireless communication in a base station, comprising: A processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor, the instructions causing the apparatus to: transmitting, to a user equipment (UE), an indication that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, the first downlink control channel candidate being transmitted, at least in part, before the second downlink control channel candidate; transmitting downlink control information to the UE via the first downlink control channel candidate and the second downlink control channel candidate, the downlink control information scheduling resources of a downlink shared channel in a transmission time interval including at least the second downlink control channel candidate; transmitting a downlink message on the resource based at least in part on a validation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied, the validation rule being that at least one of the first downlink control channel candidate or the second downlink control channel candidate is within a threshold number of symbols at a start of the transmission time interval in which the resource is scheduled; To carry out Device.

18. An apparatus for wireless communication in a base station, comprising: A processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor, the instructions causing the apparatus to: transmitting, to a user equipment (UE), an indication that a first downlink control channel candidate in a first search space set is linked to a second downlink control channel candidate in a second search space set, the first downlink control channel candidate being transmitted, at least in part, before the second downlink control channel candidate; transmitting downlink control information including a channel state information request to the UE via the first downlink control channel candidate and the second downlink control channel candidate; receiving a channel state information report from the UE based at least in part on a validation rule associated with the first downlink control channel candidate and the second downlink control channel candidate being linked being satisfied, the validation rule being that a reference signal resource associated with the channel state information request is located at least after a starting symbol of the first downlink control channel candidate; To carry out Device.

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