Signaling-overhead reduction with resource grouping

A configuration for configuring and updating the spatial relationship of multiple physical uplink control channel (PUCCH) resources in a single message, thereby reducing signaling overhead. A user equipment (UE) constructs a message associated with at least one of a plurality of component carriers (CCs) or a plurality of bandwidth parts (BWPs) indicating a same spatial relation for the at least one of the plurality of CCs or the plurality of BWPs. The UE transmits the message to a base station. The base station transmits a message to the UE configuring multiple spatial parameters for the at least one of the plurality of CCs, the plurality of BWPs, or a plurality of uplink/downlink resources.

BACKGROUND

Technical Field

The present disclosure relates generally to communication systems, and more particularly, to a reduction of signaling overhead in wireless communication systems.

Introduction

SUMMARY

A network may signal a User Equipment (UE) to configure the UE, e.g., to configure the UE for operation in a wireless network that supports 5G NR. Communication such as 5G NR, may use directional transmission and reception, and configuration information may be exchanged between the UE and the base station to ensure that the transmitter and the receiver use the same configured set of beams for communication. In order to update certain fields and spatial properties, the base station may transmit signaling, e.g., via a medium access control (MAC) control element (CE), to indicate or activate the spatial relationship or to provide the quasi co-location (QCL) information for the set of beams to be used for the communication between the UE and the base station. However, MAC-CEs may only update or configure the spatial relationship for physical uplink control channel (PUCCH) resources one at a time, such that increased signaling is used to update or configure multiple PUCCH resources. This increased signaling results in signaling overhead which could be inefficient and could impact network performance.

Techniques disclosed herein are directed to minimizing the signaling overhead for updating and configuring the spatial relationship for multiple resources and/or channels, such as but not limited to PUCCH, and support simultaneous configuration and updating of multiple resources. For example, the disclosure allows for the spatial relationship of multiple resources to be configured and updated in reduced messages, such as in a single message. In addition, multiple downlink and uplink resources may be updated simultaneously. Thus, aspects presented herein enable a reduction in signaling overhead and provide a more efficient use of wireless resources

In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided for reducing signaling overhead for both updating and configuring spatial parameters and support simultaneous configuration and updating of multiple resources. The apparatus constructs a message associated with at least one of a plurality of component carriers (CCs) or a plurality of bandwidth parts (BWPs) indicating a same spatial relation for the at least one of the plurality of CCs or the plurality of BWPs. The apparatus may transmit the message to a base station.

In another aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus constructs a message associated with at least one of a plurality of component carriers (CCs), a plurality of bandwidth parts (BWPs), or a plurality of uplink (UL)/downlink (DL) resources configuring multiple spatial parameters for the at least one of the plurality of CCs, the plurality of BWPs, or the plurality of UL/DL resources. The apparatus transmits the message to a UE.

DETAILED DESCRIPTION

Referring again toFIG.1, in certain aspects, the UE104may be configured to report to a base station (e.g.,180) the frequency ranges in which it assumes the same spatial properties. The UE104may be configured to generate a single report for a group of CCs or BWPs indicating that the same spatial relation may be assumed across the indicated frequency ranges. For example, the UE104ofFIG.1includes a spatial relation component198configured to construct a message associated with at least one of a plurality of CCs or a plurality of BWPs indicating a same spatial relation for the at least one of the plurality of CCs or the plurality of BWPs. The UE104may transmit the message to a base station (e.g.,180).

Referring again toFIG.1, in certain aspects, base station180may be configured to configure spatial parameters for multiple UL/DL channels or resources, including over multiple CCs or BWPs. For example, the base station180ofFIG.1includes a configuration component199configured to construct a message associated with at least one of a plurality of CCs, a plurality of BWPs, or a plurality of UL/DL resources configuring multiple spatial parameters for the at least one of the plurality of CCs, the plurality of BWPs, or the plurality of UL/DL resources. The base station180may transmit the message to a UE (e.g.,104).

Although the following description may be focused on 5G NR, the concepts described herein may be applicable to other similar areas, such as LTE, LTE-A, Code Division Multiple Access (CDMA), Global System for Mobile communications (GSM), and/or other wireless/radio access technologies.

Wireless communication between a base station and a UE may use directional transmission and reception, such that configuration information is provided and exchanged between the UE and the base station to ensure that the transmitter and receiver use the same configured set of beams for communication. For example, 5G NR based wireless communication may be exchanged using directional beams. Beamforming may be applied to uplink channels, such as but not limited to PUCCH. One or more spatial relations between the uplink and downlink signals may be configured for beamformed communication. A spatial relation between an uplink signal and a downlink signal indicates that a UE may transmit the uplink signal using the same beam as it used for receiving the corresponding downlink signal.

In order to update certain fields and spatial properties of channels and/or resources, such as PUCCH for example, signaling (e.g., MAC-CE) transmitted by the base station is typically utilized. However, a MAC-CE may update one resource at a time and multiple MAC-CEs would be transmitted between the UE and base station to update the multiple resources. Aspects presented herein improve the manner in which spatial relationship is configured and/or updated such that multiple resources may be configured and updated simultaneously.

The present disclosure relates to improving the manner in which spatial properties are configured and/or updated and may reduce signaling overhead due to multiple groups of resources being able to be configured and/or updated simultaneously. A group of resources may be configured and/or updated with a single message, which reduces strain on the network and may free up limited frequency resources.

FIG.4is a call flow diagram of signaling between a UE and a base station in accordance with aspects of the disclosure. The diagram400ofFIG.4includes a base station402and a UE404. The base station402may be configured to provide a cell. For example, in the context ofFIG.1, the base station402may correspond to base station102/180and, accordingly, the cell may include a geographic coverage area110in which communication coverage is provided and/or a small cell102′ having a coverage area110′. Further, UE404may correspond to base station310and the UE504may correspond to UE350.

The base station402may configure multiple spatial parameters. For example, the base station402may construct a message406configuring multiple spatial parameters for multiple groups of resources. The message406may be associated with at least one of a plurality of component carriers (CCs), a plurality of bandwidth parts (BWPs), or a plurality of uplink (UL)/downlink (DL) resources. The message406may configure multiple spatial parameters for at least one of the plurality of CCs, the plurality of BWPs, or the plurality of UL/DL resources. The base station402may then transmit the message406to the UE404. In some aspects, the base station402may transmit the message406to the UE404via a MAC-CE. The spatial parameters for the multiple groups of resources may be configured via the MAC-CE. In some aspects, the message406may include information indicating a plurality of resource groups associated with the plurality of BWPs or the plurality of CCs. In some aspects, the message406may include configuration information of the spatial parameters that correspond to each of the plurality of resource groups associated with at least one of the plurality of BWPs, the plurality of CCs, or the plurality of UL/DL resources.

The UE404, upon receipt of the message406from the base station402, may process the message406and apply the multiple spatial parameters in accordance with the message406.

The UE404may be configured to construct a message410associated with at least one of a plurality of CCs or a plurality of BWPs. The message410may indicate a same spatial relation for the at least one of the plurality of CCs or the plurality of BWPs. In some aspects, the message410may be associated with one of a PUCCH or a PUSCH on which the same spatial relation applies for the at least one of the plurality of CCs or the plurality of BWPs. The UE404may transmit the message404to the base station402. The message404may include status information of the multiple spatial parameters. For example, the UE404may be configured to report to the base station402the frequency ranges and CCs in which the UE404would assume the same spatial properties. The UE404may assume that the same spatial properties indicates that the same QCL or transmission configuration indication (TCI) state are utilized for the DL signal reception, while the same spatial relationship is utilized for the UL transmission from the UE404side. As such, the UE404, instead of reporting a per-carrier beam report, may be configured to report a single beam report for a group of carriers or BWPs, thereby indicating that the same spatial relationship may be assumed across the indicated frequency ranges. The UE404may transmit the message410to the base station402. In some aspects, the message410may be one of a beam report or a MAC-CE.

At least one advantage of the disclosure is that the base station402may utilize the message410from the UE404to generate an update message (e.g.,414) to update and/or re-configure the spatial parameters for multiple uplink resources. The update message may update the spatial relationship of multiple UL resources in a single message. The update message updating multiple UL resources in a single message allows for the reduction of signaling overhead while supporting the grouping of resources. At least another advantage of the disclosure is that the base station402may utilize the message410from the UE404to update TCI states and QCL assumptions for multiple DL resources. In some aspects, the update message414may be associated with other PHY channels such as, but not limited to, PUSCH, PDSCH, PUCCH.

The base station402, may utilize the message412from the UE402to provide updated spatial parameters to multiple groups of resources. In some aspects, the base station402may provide a spatial parameter update for multiple DL/UL channels or resources, including over multiple BWPs or CCs. The base station402may receive, from UE404, a message412associated with at least one of the plurality of CCs or the plurality of BWPs. The message412may indicate a same spatial relation for the at least one of the plurality of CCs or the plurality of BWPs. The base station402may construct a single update message414. The single update massage414may be based on the message412received from the UE404. The single update message414may include re-configuration information of the spatial parameters for each of the plurality of resource groups associated with at least one of the plurality of BWPs, the plurality of CCs, or the plurality of UL/DL resources. The base station402may utilize the information within the message410, sent by UE404, to activate, re-configure, and/or update the spatial parameters for the multiple groups of resources, and provides such updated spatial parameters in the single update message414.

In some aspects, the simultaneous update/indication of a single spatial relation per group of PUCCH may be supported by using one MAC-CE. In some aspects, the group may correspond to all of the PUCCHs in a BWP when a single active spatial relation is applied before and/or after activation. The simultaneous update/indication of a single spatial relation per group of PUCCH resources by using MAC-CE may include explicit higher layer signaling on the PUCCH resource grouping. For example, in some aspects, the explicit higher layer signaling on the PUCCH resource grouping may include a group identifier within each PUCCH resource. In some aspects, the explicit higher layer signaling on the PUCCH resource grouping may include defining a new PUCCH group, which may include identities of PUCCH resources.

In some aspects, for example, simultaneous spatial relation update across multiple CCs and/or BWPs, up to two lists of CCs may be based on an indication in the MAC-CE. The UE may expect no overlapped CCs in multiple groups of CCs. The groups for simultaneous spatial relation update may be different from those for simultaneous TCI state activation.

In some aspects, simultaneous TCI state identification (ID) activation may be performed via a MAC-CE where a same TCI state ID is applied for all the BWPs in a configured CCs

In some aspects, the update message414may include an update of the spatial relation in association with at least one of the plurality of CCs or the plurality of BWPs, wherein the update message414is based on the message410transmitted by the UE402. In some aspects, the update message may include an update of at least one of TCI states or a QCL assumption in association with at least one of the plurality of CCs or the plurality of BWPs, wherein the update message414is based on the message410transmitted by the UE402.

At least one advantage of the disclosure is that the update message414may be configured to indicate spatial relationship information for multiple groups of resources or multiple resource groups/sets. This allows the base station402to update multiple groups of resources using a single message, reducing the amount of signaling, which in turn reduces the signaling overhead. In some aspects, the update message414may be a MAC-CE, wherein the spatial parameters for the plurality of resource groups are re-configured via the MAC-CE. The MAC-CE may be configured to indicate updates for multiple groups or resources using the single MAC-CE. In some aspects, the single MAC-CE may indicate the same update for multiple groups, while in some aspects, the single MAC-CE may indicate different updates for multiple groups. Thus, the MAC-CE may be configured to provide one or more updates for the plurality of resource groups.

FIGS.5a-care illustrations of multiple resource groups in accordance with certain aspects of the disclosure. For example, the diagram500may be a modified PUCCH spatial relation Activation/Deactivation MAC-CE. The MAC-CE may include an identifier that identifies groups of resources to which the spatial relation Activation/Deactivation applies. The PUCCH spatial relation Activation/Deactivation MAC-CE500may have a fixed size of 24 bits and may include a Serving Cell ID which indicates the identity of the Serving Cell for which the MAC-CE applies. In the aspect ofFIG.5a, the length of the Serving Cell ID field is 5 bits, but the length may be greater than or less than 5 bits. The MAC-CE500may include a BWP ID which indicates a UL BWP for which the MAC-CE applies as a codepoint of the DCI bandwidth part indicator field. The length of the BWP ID may be 2 bits, but may be less than or greater than 2 bits. The MAC-CE500may include a PUCCH Resource ID which contains an identifier of the PUCCH resource ID. The length of the PUCCH Resource ID of MAC-CE500is shown as having a length of 3 bits, but may be greater than or less than 3 bits. The MAC-CE500may also include a Resource set ID having a length of 2 bits. The MAC-CE may include one or more activation fields Si, where the activation field Siis set to 1 to indicate activation of spatial relation, and the activation field Siis set to 0 to indicate deactivation of spatial relation, where 0≤i≤N. In some aspects, one or more of the activation fields Simay be associated with one or more of the multiple resource groups, such that the one or more activation fields Siconvey the updated spatial relationship information for the multiple resource groups. In some aspects, the one or more activation fields Simay convey the updated spatial relationship information for a particular ID.

The resource groups within the MAC-CE500may be based on at least one or more of a resource ID, a resource set ID, a CC ID, a BWP ID, and/or a combination thereof. At least one advantage of the disclosure is that the MAC-CE500is consistent with the payload of existing PUCCH spatial relation Activation/Deactivation MAC-CE. In some aspects, the PUCCH Resource ID of the existing PUCCH spatial relation Activation/Deactivation MAC-CE may be partitioned into different lengths to allow for the inclusion of other resource groups, such as but not limited to a resource ID, a resource set ID, a CC ID, or a BWP ID. In some aspects, a first set of activation fields Simay be associated with one or more resource groups within the modified MAC-CE500, while a second set of activation fields Simay be associated with one or more of the remaining resource groups not associated with the first set of activation fields Si. The first and/or second set of activation fields Simay have the same or different amount of activation fields. In some aspects, the modified MAC-CE may have one or more sets of activation fields Siand each set of activation field may be comprised of one or more activation fields, and is not intended to be limited to the aspects disclosed herein.

The modified MAC-CEs525and550may be configured in a manner similar to the modified MAC-CE500, while having the same or different resource groups. As such, the modified MAC-CEs525and550are additional aspects of the disclosure.

In some aspects, the modified MAC-CE (not shown) may have fields added in order to convey multiple resource group IDs and multiple spatial information IDs, by having a variable length MAC-CE. Although the MAC-CEs500,525, and550are discussed in relation to a PUCCH, the disclosure is not intended to be limited to PUCCH. The modified MAC-CE may apply to other channels in either of the UL or DL side. In addition, the disclosure is not intended to be limited to the aspects of the modified MAC-CEs500,525, and550. The modified MAC-CEs may be configured in many different combination of resources and the disclosure is not intended to be limited to the aspects disclosed herein.

Referring back toFIG.4, the base station402may transit the single update message414to the UE404. The single update message414may be a MAC-CE, wherein the spatial parameters for the plurality of resource groups are re-configured via the MAC-CE.

The UE404receives the update message414and updates the multiple spatial parameters in accordance with the update message414. In some aspects, the UE404may receive, from the base station402, a spatial relation update416in association with at least one of the plurality of CCs or the plurality of BWPs. The spatial relation update416may be based on the message410transmitted by the UE404to the base station402. The spatial relation update416may be associated with update message414.

In some aspects, the UE404may receive, from the base station402, a TCI state or QCL update418comprising an update of at least one of the TCI states or QCL assumption in association with at least one of the plurality of CCs or the plurality of BWPs. The update418may be based on the message410transmitted by the UE404to the base station402. The update418may be associated with update message414.

FIG.6is a flowchart600of a method of wireless communication. The method may be performed by a UE or a component of a UE (e.g., the UE104,350,404,1050; the apparatus702/702′; the processing system814, which may include the memory360and which may be the entire UE or a component of the UE, such as the TX processor368, the RX processor356, and/or the controller/processor359). According to various aspects, one or more of the illustrated operations of method600may be omitted, transposed, and/or contemporaneously performed. Optional aspects are illustrated with a dashed line. Aspects of the method may assist a UE to construct a message indicating a same spatial relation for at least one of the plurality of CCs or the plurality of BWPs.

At602, the UE may construct a message (e.g.,410) associated with at least one of a plurality of CCs or a plurality of BWPs indicating a same spatial relation for the at least one of the plurality of CCs or the plurality of BWPs, as shown in connection withFIG.4. For example,602may be performed by spatial relation component706. At604, the UE (e.g.,404) may transmit the message (e.g.,410) to a base station (e.g.,402). For example,604may be performed by transmission component712. In some aspects, the message (e.g.,410) may be associated with one of a PUCCH or a PUSCH on which the same spatial relation applies for the at least one of the plurality of CCs or the plurality of BWPs. In some aspects, the message (e.g.,410) may be a beam report or a MAC-CE.

At606, the UE (e.g.,404) may receive an update (e.g.,414) of the spatial relation (e.g.,416) in association with the at least one of the plurality of CCs or the plurality of BWPs. For example,606may be performed by reception component704. In some aspects, the UE (e.g.,404) may receive the update (e.g.,414) from the base station (e.g.,402). In some aspects, the update (e.g.,414) may be based on the message (e.g.,410) transmitted by the UE (e.g.,404) to the base station (e.g.,402). In some aspects, the update may indicate a plurality of resources using a resource group ID. The resource group ID may identify a group of PUCCH resources. In some aspects, the update may be received in a MAC-CE.

At608, the UE (e.g.,404) may receive an update (e.g.,414) of at least one of TCI states or QCL assumption (e.g.,418) in association with the at least one of the plurality of CCs or the plurality of BWPs. For example,608may be performed by DL update component710. In some aspects, the UE (e.g.,404) may receive the update (e.g.,414) from the base station (e.g.,402). In some aspects, the update (e.g.,414) may be based on the message (e.g.,410) transmitted by the UE (e.g.,404) to the base station (e.g.402). In some aspects, the update (e.g.,414) may be associated with one of a PDCCH or a PDSCH.

FIG.7is a conceptual data flow diagram700illustrating the data flow between different means/components in an example apparatus702. The apparatus may be a UE or a component of a UE. The apparatus includes a reception component704that may receive an update (e.g.,414) from the base station (e.g.,402), e.g., as described in connection with606or608ofFIG.6. The reception component704may be configured to receive various types of signals/messages and/or other information from other devices, including, for example, the base station750. The apparatus includes a spatial relation component706that may construct a message (e.g.,410) associated with at least one of a plurality of CCs or a plurality of BWPs indicating a same spatial relation for the at least one of the plurality of CCs or the plurality of BWPs, e.g., as described in connection with602ofFIG.6. In some aspects, the message (e.g.,410) may be associated with one of a PUCCH or a PUSCH on which the same spatial relation applies for the at least one of the plurality of CCs or the plurality of BWPs. In some aspects, the message (e.g.,410) may be one of a beam report or a MAC-CE. The apparatus includes a UL update component708that may receive an update (e.g.,414) of the spatial relation (e.g.,416) in association with the at least one of the plurality of CCs or the plurality of BWPs, e.g., as described in connection with606ofFIG.6. In some aspects, the update (e.g.,414) may be based on a message (e.g.,410) transmitted by the UE (e.g.,404) to the base station (e.g.,402). The apparatus includes a DL update component710that may receive an update (e.g.,414) of at least one of TCI states or a QCL assumption (e.g.,418) in association with the at least one of the plurality of CCs or the plurality of BWPs, e.g., as described in connection with608ofFIG.6. In some aspects, the update (e.g.,414) may be based on a message (e.g.,410) transmitted by the UE (e.g.,404) to the base station (e.g.,402). In some aspects, the update (e.g.,414) may be associated with one of a PDCCH or a PDSCH. The apparatus includes a transmission component712that may transmit the message (e.g.,410) to the base station (e.g.,402), e.g., as described in connection with604ofFIG.6. The transmission component712may be configured to transmit various types of signals/messages and/or other information to other device, including, for example, the base station750.

FIG.8is a diagram800illustrating an example of a hardware implementation for an apparatus702′ employing a processing system814. The processing system814may be implemented with a bus architecture, represented generally by the bus824. The bus824may include any number of interconnecting buses and bridges depending on the specific application of the processing system814and the overall design constraints. The bus824links together various circuits including one or more processors and/or hardware components, represented by the processor804, the components704,706,708,710,712, and the computer-readable medium/memory806. The bus824may also link various other circuits such as timing sources, peripherals, voltage regulators, and power management circuits, which are well known in the art, and therefore, will not be described any further.

The processing system814may be coupled to a transceiver810. The transceiver810is coupled to one or more antennas820. The transceiver810provides a means for communicating with various other apparatus over a transmission medium. The transceiver810receives a signal from the one or more antennas820, extracts information from the received signal, and provides the extracted information to the processing system814, specifically the reception component704. In addition, the transceiver810receives information from the processing system814, specifically the transmission component712, and based on the received information, generates a signal to be applied to the one or more antennas820. The processing system814includes a processor804coupled to a computer-readable medium/memory806. The processor804is responsible for general processing, including the execution of software stored on the computer-readable medium/memory806. The software, when executed by the processor804, causes the processing system814to perform the various functions described supra for any particular apparatus. The computer-readable medium/memory806may also be used for storing data that is manipulated by the processor804when executing software. The processing system814further includes at least one of the components704,706,708,710,712. The components may be software components running in the processor804, resident/stored in the computer readable medium/memory806, one or more hardware components coupled to the processor804, or some combination thereof. The processing system814may be a component of the UE350and may include the memory360and/or at least one of the TX processor368, the RX processor356, and the controller/processor359. Alternatively, the processing system814may be the entire UE (e.g., see350ofFIG.3).

In one configuration, the apparatus702/702′ for wireless communication includes means for constructing a message associated with at least one of a plurality of CCs or a plurality of BWPs indicating a same spatial relation for the at least one of the plurality of CCs or the plurality of BWPs. The apparatus includes means for transmitting the message to a base station. The apparatus may further include means for receiving an update of the spatial relation in association with the at least one of the plurality of CCs or the plurality of BWPs. The update may be received from the base station. The update may be based on the message transmitted to the base station by the UE. The apparatus may further include means for receiving an updated of at least one of TCI states or a QCL assumption in association with the at least one of the plurality of CCs or the plurality of BWPs. The update may be received from the base station. The update may be based on the message transmitted to the base station by the UE. The aforementioned means may be one or more of the aforementioned components of the apparatus702and/or the processing system814of the apparatus702′ configured to perform the functions recited by the aforementioned means. As described supra, the processing system814may include the TX Processor368, the RX Processor356, and the controller/processor359. As such, in one configuration, the aforementioned means may be the TX Processor368, the RX Processor356, and the controller/processor359configured to perform the functions recited by the aforementioned means.

FIG.9is a flowchart900of a method of wireless communication. The method may be performed by a base station or a component of a base station (e.g., the base station102,180,310,402,750; the apparatus1002/1002′; the processing system1114, which may include the memory376and which may be the entire base station or a component of the base station, such as the TX processor316, the RX processor370, and/or the controller/processor375). According to various aspects, one or more of the illustrated operations of method900may be omitted, transposed, and/or contemporaneously performed. Optional aspects are illustrated with a dashed line. The method may be configured to configure spatial parameters for multiple UL/DL channels or resources, including over multiple CCs or BWPs.

At902, the base station may construct a message (e.g.,406) associated with at least one of a plurality of CCs, a plurality of BWPs, or a plurality of UL/DL resources configuring multiple spatial parameters for the at least one of the plurality of CCs, the plurality of BWPs, or the plurality of UL/DL resources. For example,902may be performed by configuration component1006. In some aspects, the message (e.g.,406) may include information indicating a plurality of resource groups associated with the plurality of BWPs or the plurality of CCs, and includes configuration information of the spatial parameters that applies for each of the plurality of resource groups associated with at least one of the plurality of BWPs, the plurality of CCs, or the plurality of UL/DL resources. In some aspects, each of the plurality of resource groups may be based on at least one of a resource identifier (ID), a resource set ID, a CC ID, or a BWP ID, or a combination thereof. In some aspects, the message (e.g.,406) may be a medium access control (MAC) control element (CE). In some aspects, the spatial parameters for the plurality of resource groups may be configured via the MAC-CE. At904, the base station may transmit the message (e.g.,406) to a UE (e.g.,404). For example,904may be performed by transmission component1012.

At906, the base station may receive a message (e.g.,410) associated with at least one of the plurality of CCs or the plurality of BWPs indicating a same spatial relation for the at least one of the plurality of CCs or the plurality of BWPs. For example,906may be performed by spatial relation component1008. The base station may receive the message from the UE.

At908, the base station may construct a single update message (e.g.,414) including re-configuration information of the spatial parameters (e.g.,416,418) for each of the plurality of resource groups associated with at least one of the plurality of BWPs, the plurality of CCs, or the plurality of UL/DL resources. For example,908may be performed by update component1010. In some aspects, the single update message (e.g.,414) may be based on the message (e.g.,410) received from the UE (e.g.,404). In some aspects, the update message may indicate a plurality of resources using a resource group ID. The resource group ID may identify a group of PUCCH resources.

At910, the base station may transmit the single update message (e.g.,414) to the UE (e.g.,404). For example,910may be performed by transmission component1012. In some aspects, the single update message (e.g.,414) may be transmitted in a MAC-CE. In some aspects, the spatial parameters for the plurality of resource groups may be re-configured via the MAC-CE.

FIG.10is a conceptual data flow diagram1000illustrating the data flow between different means/components in an example apparatus1002. The apparatus may be a base station. The apparatus includes a reception component1004that may receive uplink signals or messages from the UE (e.g.,404), e.g., as described in connection with906ofFIG.9. The apparatus includes a configuration component1006that constructs a message (e.g.,406) associated with at least one of a plurality of component carriers (CCs), a plurality of bandwidth parts (BWPs), or a plurality of uplink (UL)/downlink (DL) resources configuring multiple spatial parameters for the at least one of the plurality of CCs, the plurality of BWPs, or the plurality of UL/DL resources, e.g., as described in connection with902ofFIG.9. The apparatus includes a spatial relation component1008that receives, from the UE (e.g.,404) a message (e.g.,410) associated with at least one of the plurality of CCs or the plurality of BWPs indicating a same spatial relation for the at least one of the plurality of CCs or the plurality of BWPs, e.g., as described in connection with906ofFIG.9. The apparatus includes an update component1010that constructs a single update message (e.g.,414) including re-configuration information (e.g.,416,418) of the spatial parameters for each of the plurality of resource groups associated with at least one of the plurality of BWPs, the plurality of CCs, or the plurality of UL/DL resources, e.g., as described in connection with908ofFIG.9. The single update message may be based on the message (e.g.,410) received from the UE (e.g.,404). The apparatus includes a transmission component1012that may transmit the message (e.g.,406) to the UE (e.g.,404), e.g., as described in connection with904ofFIG.9. The transmission component1012may also transmit the single update message (e.g.,414) to the UE (e.g.,404), e.g., as described in connection with910ofFIG.9.

FIG.11is a diagram1100illustrating an example of a hardware implementation for an apparatus1002′ employing a processing system1114. The processing system1114may be implemented with a bus architecture, represented generally by the bus1124. The bus1124may include any number of interconnecting buses and bridges depending on the specific application of the processing system1114and the overall design constraints. The bus1124links together various circuits including one or more processors and/or hardware components, represented by the processor1104, the components1004,1006,1008,1010,1012and the computer-readable medium/memory1106. The bus1124may also link various other circuits such as timing sources, peripherals, voltage regulators, and power management circuits, which are well known in the art, and therefore, will not be described any further.

The processing system1114may be coupled to a transceiver1110. The transceiver1110is coupled to one or more antennas1120. The transceiver1110provides a means for communicating with various other apparatus over a transmission medium. The transceiver1110receives a signal from the one or more antennas1120, extracts information from the received signal, and provides the extracted information to the processing system1114, specifically the reception component1004. In addition, the transceiver1110receives information from the processing system1114, specifically the transmission component1012, and based on the received information, generates a signal to be applied to the one or more antennas1120. The processing system1114includes a processor1104coupled to a computer-readable medium/memory1106. The processor1104is responsible for general processing, including the execution of software stored on the computer-readable medium/memory1106. The software, when executed by the processor1104, causes the processing system1114to perform the various functions described supra for any particular apparatus. The computer-readable medium/memory1106may also be used for storing data that is manipulated by the processor1104when executing software. The processing system1114further includes at least one of the components1004,1006,1008,1010,1012. The components may be software components running in the processor1104, resident/stored in the computer readable medium/memory1106, one or more hardware components coupled to the processor1104, or some combination thereof. The processing system1114may be a component of the base station310and may include the memory376and/or at least one of the TX processor316, the RX processor370, and the controller/processor375. Alternatively, the processing system1114may be the entire base station (e.g., see310ofFIG.3).

In one configuration, the apparatus1002/1002′ for wireless communication includes means for constructing a message associated with at least one of a plurality of CCs, a plurality of BWPs, or a plurality of UL/DL resources configuring multiple spatial parameters for the at least one of the plurality of CCs, the plurality of BWPs, or the plurality of UL/DL resources. The apparatus includes means for transmitting the message to a UE. The apparatus further includes means for receiving, from the UE, a message associated with at least one of the plurality of CCs or the plurality of BWPs indicating a same spatial relation for the at least one of the plurality of CCs or the plurality of BWPs. The apparatus further includes means for constructing a single update message, based on the message received from the UE, including re-configuration information of the spatial parameters for each of the plurality of resource groups associated with at least one of the plurality of BWPs, the plurality of CCs, or the plurality of UL/DL resources. The apparatus further includes means for transmitting the single update message to the UE. The aforementioned means may be one or more of the aforementioned components of the apparatus1002and/or the processing system1114of the apparatus1002′ configured to perform the functions recited by the aforementioned means. As described supra, the processing system1114may include the TX Processor316, the RX Processor370, and the controller/processor375. As such, in one configuration, the aforementioned means may be the TX Processor316, the RX Processor370, and the controller/processor375configured to perform the functions recited by the aforementioned means.

Techniques disclosed herein are directed to minimizing the signaling overhead for updating and configuring the spatial relationship for PUCCH resources and support simultaneous configuration and updating of multiple PUCCH resources. At least one advantage of the disclosure is that the base station402may be configured to utilize the message410from the UE404to generate an update message (e.g.,414) to update and/or re-configure the spatial parameters for multiple uplink resources. The update message may be configured to update the spatial relationship of multiple UL resources in a single message. The update message being configured to update multiple UL resources in a single message allows for the reduction of signaling overhead while supporting the grouping of resources. At least another advantage of the disclosure is that the base station402may utilize the message410from the UE404to update TCI states and QCL assumptions for multiple DL resources. At least one advantage of the disclosure is that the update message414may be configured to indicate spatial relationship information for multiple groups of resources. This allows the base station402to update multiple groups of resources using a single message, reducing the amount of signaling, which in turn reduces the signaling overhead. At least one advantage of the disclosure is that the modified MAC-CE500is consistent with the payload of existing PUCCH spatial relation Activation/Deactivation MAC-CE.

The following examples illustrate example embodiments. These embodiments and aspects of these embodiments may be used in combination with any previous embodiments or aspects of the previous embodiments disclosed or discussed in relation to the systems, methods, or devices of the figures.

Example 1 is a method of wireless communication of a UE that includes constructing a message associated with at least one of a plurality of CCs or a plurality of BWPs indicating a same spatial relation for the at least one of the plurality of CCs or the plurality of BWPs; and transmitting the message to a base station.

In Example 2, the method of Example 1 further includes receiving, from the base station, an update of the spatial relation in association with the at least one of the plurality of CCs or the plurality of BWPs, the update being based on the transmitted message.

In Example 3, the method of any of Examples 1-2 further includes that the update indicates a plurality of resources using a resource group identifier (ID).

In Example 4, the method of any of Examples 1-3 further includes that the group ID identifies a group of PUCCH resources.

In Example 5, the method of any of Examples 1-4 further includes that the update is received in a MAC-CE.

In Example 6, the method of any of Examples 1-5 further includes receiving, from the base station, an update of at least one of TCI state or a QCL assumption in association with the at least one of the plurality of CCs or the plurality of BWPs, the update being based on the transmitted message.

In Example 7, the method of any of Examples 1-6 further includes that the update is associated with one of a PDCCH or a PDSCH.

In Example 8, the method of any of Examples 1-7 further includes that the message is associated with one of a PUCCH, or a PUSCH on which the same spatial relation applies for the at least one of the plurality of CCs or the plurality of BWPs.

In Example 9, the method of any of Examples 1-8 further includes that the message is one of a beam report or a MAC CE.

Example 10 is a system or apparatus including one or more processors and memory in electronic communication with the one or more processors to cause the system or apparatus to implement a method as in any of Examples 1-9.

Example 11 is a system or apparatus including means for implementing a method or realizing an apparatus as in any of Examples 1-9.

Example 13 is a method of wireless communication of a base station that includes constructing a message associated with at least one of a plurality of CCs, a plurality of BWPs, or a plurality of UL/DL resources configuring multiple spatial parameters for the at least one of the plurality of CCs, the plurality of BWPs, or the plurality of UL/DL resources; and transmitting the message to a UE.

In Example 14, the method of Example 13 further includes that the message includes information indicating a plurality of resource groups associated with the plurality of BWPs or the plurality of CCs, and includes configuration information of the spatial parameters that applies for each of the plurality of resource groups associated with at least one of the plurality of BWPs, the plurality of CCs, or the plurality of UL/DL resources.

In Example 15, the method of any of Examples 13-14 further includes that each of the plurality of resource groups is based on at least one of a resource ID, a resource set ID, a CC ID, or a BWP ID or a combination thereof.

In Example 16, the method of any of Examples 13-15 further includes receiving, from the UE, an initial message associated with at least one of the plurality of CCs or the plurality of BWPs indicating a same spatial relation for the at least one of the plurality of CCs or the plurality of BWPs; constructing a single update message, based on the message received from the UE, including re-configuration information of the spatial parameters for each of the plurality of resource groups associated with at least one of the plurality of BWPs, the plurality of CCs, or the plurality of UL/DL resources; and transmitting the single update message to the UE.

In Example 17, the method of any of Examples 13-16 further includes that the single update message indicates a plurality of resources using a resource group ID.

In Example 18, the method of any of Examples 13-17 further includes that the group ID identifies a group of PUCCH resources.

In Example 19, the method of any of Examples 13-18 further includes that the single update message is received in a MAC-CE.

Example 20 is a system or apparatus including one or more processors and memory in electronic communication with the one or more processors to cause the system or apparatus to implement a method as in any of Examples 13-19.

Example 21 is a system or apparatus including means for implementing a method or realizing an apparatus as in any of Examples 13-19.