Medium access control control element for update of spatial relation configuration

A base station for wireless communication, comprising:

• a memory;
• and
• one or more processors, coupled to the memory, configured to:
• generate a medium access control (MAC) control element (CE) that indicates an update to a spatial relation configuration of a user equipment (UE) for physical uplink control channel (PUCCH) transmissions,
• wherein the update identifies a first PUCCH resource to which the update applies and identifies first spatial relation information associated with first spatial settings and first power control parameters, and
• wherein the update indicates whether the update applies to other PUCCH resources in a group of PUCCH resources to which the first PUCCH resource belongs based at least in part on a bit included in the update or prior transmission of an indication of which PUCCH resources are to be in the group of PUCCH resources for the update;
• and
• transmit the MAC CE to the UE.

A method of wireless communication performed by a user equipment (UE), comprising:

• receiving a medium access control (MAC) control element (CE) that indicates an update to a spatial relation configuration of the UE for physical uplink control channel (PUCCH) transmissions,
• wherein the update identifies a first PUCCH resource to which the update applies and identifies first spatial relation information associated with first spatial settings and first power control parameters, and
• wherein the update further applies to other PUCCH resources in a group of PUCCH resources to which the first PUCCH resource belongs based at least in part on a bit included in the update or an indication of which PUCCH resources are to be in the group of PUCCH resources for the update:
• updating, using the first spatial relation information, the spatial relation configuration of the UE for any combination of the first PUCCH resource or the other PUCCH resources in the group of PUCCH resources;
• and
• transmitting a PUCCH communication on at least the first PUCCH resource.

A method of wireless communication performed by a base station, comprising:

• generating a medium access control (MAC) control element (CE) that indicates an update to a spatial relation configuration of a user equipment (UE) for physical uplink control channel (PUCCH) transmissions,
• wherein the update identifies a first PUCCH resource to which the update applies and identifies first spatial relation information associated with first spatial settings and first power control parameters, and
• wherein the update indicates whether the update applies to other PUCCH resources in a group of PUCCH resources to which the first PUCCH resource belongs based at least in part on a bit included in the update or prior transmission of an indication of which PUCCH resources are to be in the group of PUCCH resources for the update;
• and
• transmitting the MAC CE to the UE.