Updating PUCCH spatial relation information
The present disclosure relates to methods and devices for wireless communication including a UE and a base station. The UE can receive a MAC CE indicating an update to a spatial relation configuration of the UE for PUCCH transmissions. In some aspects, the update can be indicated by PUCCH resource information, where the PUCCH resource information can include first PUCCH resource information including a first PUCCH resource ID that identifies a first PUCCH resource and first spatial identification information. Additionally, the UE can update the spatial relation configuration of the UE based on at least one of the first PUCCH resource information or other PUCCH resource information of the PUCCH resource information, where the other PUCCH resource information can be in a same PUCCH resource group as the first PUCCH resource. Also, the UE can transmit a PUCCH transmission based on the updated spatial relation configuration.
1 . A method of wireless communication of a user equipment (UE), comprising:
receiving a medium access control (MAC) control element (CE) (MAC CE) indicating an update to a spatial relation configuration of a plurality of physical uplink control channel (PUCCH) resources of the UE for PUCCH transmissions, wherein the MAC CE includes a first PUCCH resource identifier (ID) that identifies a first PUCCH resource and is associated with a first PUCCH resource group in the plurality of PUCCH resources, wherein the MAC CE includes first spatial relation information, and wherein the MAC CE comprises a first value of an indication bit that indicates the update to the spatial relation configuration for a set of other PUCCH resources in the first PUCCH resource group associated with the first PUCCH resource ID, and wherein the MAC CE does not comprise a PUCCH resource ID that identifies a PUCCH resource in the set of other PUCCH resources in the first PUCCH resource group;
updating, based on the first PUCCH resource ID and the first spatial relation information, the spatial relation configuration of the plurality of PUCCH resources of the UE; and
transmitting a PUCCH transmission based on the updated spatial relation configuration.
2 . The method of claim 1 , wherein the first spatial relation information identifies a first spatial relation configuration, wherein the first spatial relation configuration includes at least one of spatial settings or power control parameters.
3 . The method of claim 1 , wherein the MAC CE includes multiple PUCCH resource IDs and respective spatial relation information, wherein updating the spatial relation configuration of the plurality of PUCCH resources of the UE is further based on the multiple PUCCH resource IDs and the respective spatial relation information.
4 . The method of claim 3 , wherein each of the multiple PUCCH resource IDs is associated with up to one respective PUCCH resource group and the plurality of PUCCH resources comprises PUCCH resources associated with any PUCCH resource group associated with one of the first PUCCH resource ID or the multiple PUCCH resource IDs.
5 . The method of claim 1 , wherein a second value of the indication bit indicates for the spatial relation configuration of the first PUCCH resource to be updated based on the first PUCCH resource ID and the first spatial relation information included in the MAC CE and indicates for the spatial relation configuration of the plurality of PUCCH resources to not be updated based on the first PUCCH resource ID and the first spatial relation information included in the MAC CE.
6 . The method of claim 1 , wherein the first spatial relation information is indicated based on a bitmap corresponding to candidate spatial relation configurations.
7 . The method of claim 1 , wherein the plurality of PUCCH resources comprises the first PUCCH resource, the method further comprising:
receiving, for the plurality of PUCCH resources, a corresponding plurality of PUCCH resource configurations via radio resource control (RRC) signaling, wherein each PUCCH resource configuration of the plurality of PUCCH resource configurations comprises an indication that a corresponding PUCCH resource of the plurality of PUCCH resources is associated with the first PUCCH resource group, and wherein the updating of the spatial relation configuration of the plurality of PUCCH resources of the UE is based on the association of the plurality of PUCCH resources with the first PUCCH resource group.
8 . An apparatus for wireless communication of a user equipment (UE), comprising:
memory; and
at least one processor coupled to the memory and configured to:
receive a medium access control (MAC) control element (CE) (MAC CE) indicating an update to a spatial relation configuration of a plurality of physical uplink control channel (PUCCH) resources of the UE for PUCCH transmissions, wherein the MAC CE includes a first PUCCH resource identifier (ID) that identifies a first PUCCH resource and is associated with a first PUCCH resource group in the plurality of PUCCH resources, wherein the MAC CE includes first spatial relation information, and wherein the MAC CE comprises a first value of an indication bit that indicates the update to the spatial relation configuration for a set of other PUCCH resources in the first PUCCH resource group associated with the first PUCCH resource ID, and wherein the MAC CE does not comprise a PUCCH resource ID that identifies a PUCCH resource in the set of other PUCCH resources in the first PUCCH resource group;
update, based on the first PUCCH resource ID and the first spatial relation information, the spatial relation configuration of the plurality of PUCCH resources of the UE; and
transmit a PUCCH transmission based on the updated spatial relation configuration.
9 . The apparatus of claim 8 , wherein the first spatial relation information identifies a first spatial relation configuration, wherein the first spatial relation configuration includes at least one of spatial settings or power control parameters.
10 . The apparatus of claim 8 , wherein the MAC CE includes multiple PUCCH resource IDs and respective spatial relation information, wherein updating the spatial relation configuration of the plurality of PUCCH resources of the UE is further based on the multiple PUCCH resource IDs and the respective spatial relation information;
wherein each of the multiple PUCCH resource IDs is associated with up to one respective PUCCH resource group and the plurality of PUCCH resources comprises PUCCH resources associated with any PUCCH resource group associated with one of the first PUCCH resource ID or the multiple PUCCH resource IDs.
11 . The apparatus of claim 8 , wherein a second value of the indication bit indicates for the spatial relation configuration of the first PUCCH resource to be updated based on the first PUCCH resource ID and the first spatial relation information included in the MAC CE and indicates for the spatial relation configuration of the plurality of PUCCH resources to not be updated based on the first PUCCH resource ID and the first spatial relation information included in the MAC CE.
12 . The apparatus of claim 8 , wherein the plurality of PUCCH resources comprises the first PUCCH resource, the at least one processor further configured to:
receive, for the plurality of PUCCH resources, a corresponding plurality of PUCCH resource configurations via radio resource control (RRC) signaling, wherein each PUCCH resource configuration of the plurality of PUCCH resource configurations comprises an indication that a corresponding PUCCH resource of the plurality of PUCCH resources is associated with the first PUCCH resource group, and wherein to update the spatial relation configuration of the plurality of PUCCH resources of the UE, the at least one processor is configured to update the spatial relation configuration of the plurality of PUCCH resources of the UE based on the association of the plurality of PUCCH resources with the first PUCCH resource group.
13 . A method of wireless communication of a base station (BS), comprising:
transmitting a medium access control (MAC) control element (CE) (MAC CE) indicating an update to a spatial relation configuration of a plurality of physical uplink control channel (PUCCH) resources of a user equipment (UE) for PUCCH transmissions, wherein the MAC CE includes a first PUCCH resource identifier (ID) that identifies a first PUCCH resource and is associated with a first PUCCH resource group in the plurality of PUCCH resources, wherein the MAC CE includes first spatial relation information, and wherein the MAC CE comprises a first value of an indication bit that indicates the update to the spatial relation configuration for a set of other PUCCH resources in the first PUCCH resource group associated with the first PUCCH resource ID, and wherein the MAC CE does not comprise a PUCCH resource ID that identifies a PUCCH resource in the set of other PUCCH resources in the first PUCCH resource group; and
receiving a PUCCH transmission based on an updated spatial relation configuration of the plurality of PUCCH resources of the UE, wherein the updated spatial relation configuration is based on the first PUCCH resource ID and the first spatial relation information.
14 . The method of claim 13 , wherein the first spatial relation information identifies a first spatial relation configuration, wherein the first spatial relation configuration includes at least one of spatial settings or power control parameters.
15 . The method of claim 13 , wherein the MAC CE includes multiple PUCCH resource IDs and respective spatial relation information, wherein the updated spatial relation configuration is further based on the multiple PUCCH resource IDs and the respective spatial relation information.
16 . The method of claim 15 , wherein each of the multiple PUCCH resource IDs is associated with up to one respective PUCCH resource group and the plurality of PUCCH resources comprises PUCCH resources associated with any PUCCH resource group associated with one of the first PUCCH resource ID or the multiple PUCCH resource IDs.
17 . The method of claim 13 , wherein second value of the indication bit indicates for the spatial relation configuration of the first PUCCH resource to be updated based on the first PUCCH resource ID and the first spatial relation information included in the MAC CE and indicates for the spatial relation configuration of the plurality of PUCCH resources to not be updated based on the first PUCCH resource ID and the first spatial relation information included in the MAC CE.
18 . The method of claim 13 , wherein the first spatial relation information is indicated based on a bitmap corresponding to candidate spatial relation configurations.
19 . The method of claim 13 , further comprising:
generating the MAC CE indicating the update to the spatial relation configuration of the plurality of PUCCH resources of the UE for the PUCCH transmissions.
20 . The method of claim 13 , wherein the plurality of PUCCH resources comprises the first PUCCH resource, the method further comprising:
transmitting, for the plurality of PUCCH resources, a corresponding plurality of PUCCH resource configurations via radio resource control (RRC) signaling, wherein each PUCCH resource configuration of the plurality of PUCCH resource configurations comprises an indication that a corresponding PUCCH resource of the plurality of PUCCH resources is associated with the first PUCCH resource group, and wherein the updated of the spatial relation configuration of the plurality of PUCCH resources of the UE is based on the association of the plurality of PUCCH resources with the first PUCCH resource group.
21 . The method of claim 20 , wherein the first PUCCH resource group is not explicitly configured, and wherein the first PUCCH resource group is indicated based on the corresponding plurality of PUCCH resource configurations.
22 . An apparatus for wireless communication of a base station, comprising:
memory; and
at least one processor coupled to the memory and configured to:
transmit a medium access control (MAC) control element (CE) (MAC CE) indicating an update to a spatial relation configuration of a plurality of physical uplink control channel (PUCCH) resources of a user equipment (UE) for PUCCH transmissions, wherein the MAC CE includes a first PUCCH resource identifier (ID) that identifies a first PUCCH resource and is associated with a first PUCCH resource group in the plurality of PUCCH resources, wherein the MAC CE includes first spatial relation information, and wherein the MAC CE comprises a first value of an indication bit that indicates the update to the spatial relation configuration for a set of other PUCCH resources in the first PUCCH resource group associated with the first PUCCH resource ID, and wherein the MAC CE does not comprise a PUCCH resource ID that identifies a PUCCH resource in the set of other PUCCH resources in the first PUCCH resource group; and
receive a PUCCH transmission based on an updated spatial relation configuration of the plurality of PUCCH resources of the UE, wherein the updated spatial relation configuration is based on the first PUCCH resource ID and the first spatial relation information.
23 . The apparatus of claim 22 , wherein the first spatial relation information identifies a first spatial relation configuration, wherein the first spatial relation configuration includes at least one of spatial settings or power control parameters.
24 . The apparatus of claim 22 , wherein the MAC CE includes multiple PUCCH resource IDs and respective spatial relation information;
wherein each of the multiple PUCCH resource IDs is associated with up to one respective PUCCH resource group and the plurality of PUCCH resources comprises PUCCH resources associated with any PUCCH resource group associated with one of the first PUCCH resource ID or the multiple PUCCH resource IDs; and
wherein the updated spatial relation configuration is further based on the multiple PUCCH resource IDs and the respective spatial relation information.
25 . The apparatus of claim 22 , wherein the at least one processor is further configured to:
generate the MAC CE indicating the update to the spatial relation configuration of the plurality of PUCCH resources of the UE for the PUCCH transmissions.
26 . The apparatus of claim 17 , wherein the plurality of PUCCH resources comprises the first PUCCH resource, the at least one processor further configured to:
transmit, for the plurality of PUCCH resources, a corresponding plurality of PUCCH resource configurations via radio resource control (RRC) signaling, wherein each PUCCH resource configuration of the plurality of PUCCH resource configurations comprises an indication that a corresponding PUCCH resource of the plurality of PUCCH resources is associated with the first PUCCH resource group, and wherein the updated of the spatial relation configuration of the plurality of PUCCH resources of the UE is based on the association of the plurality of PUCCH resources with the first PUCCH resource group.
27 . The apparatus of claim 26 , wherein the first PUCCH resource group is not explicitly configured, and wherein the first PUCCH resource group is indicated based on the corresponding plurality of PUCCH resource configurations.