Method and apparatus for activating PUCCH spatial relation
A user equipment (UE) is provided. The UE includes one or more non-transitory computer-readable media having computer-executable instructions embodied thereon and at least one processor coupled to the one or more non-transitory computer-readable media. The at least one processor is configured to execute the computer-executable instructions to perform following actions: receive, from a base station, a radio resource control (RRC) message to configure a plurality of physical uplink control channel (PUCCH) spatial relations; and receive, from the base station, a medium access control (MAC) control element (CE). The MAC CE includes a first field and a second field. The first field indicates at least one of the plurality of configured PUCCH spatial relations to be activated. The second field indicates a plurality of PUCCH resources corresponding to the at least one PUCCH spatial relation indicated by the first field.
1. A user equipment (UE), comprising:
one or more non-transitory computer-readable media having computer-executable instructions embodied thereon; and
at least one processor coupled to the one or more non-transitory computer-readable media, and configured to execute the computer-executable instructions to:
receive, from a base station, a first radio resource control (RRC) message to configure a plurality of physical uplink control channel (PUCCH) spatial relations;
receive, from the base station, a second RRC message to configure a plurality of PUCCH groups, wherein each of the plurality of PUCCH groups includes a plurality of PUCCH resources;
receive, from the base station, a medium access control (MAC) control element (CE), wherein the MAC CE comprises:
a first field, for indicating an identifier (ID) of a specific PUCCH spatial relation to be activated or deactivated, wherein the specific PUCCH spatial relation is one of the plurality of configured PUCCH spatial relations; and
a second field, for indicating an ID of a specific PUCCH resource that is in a specific PUCCH group, wherein the specific PUCCH group is one of the plurality of configured PUCCH groups;
apply the MAC CE to all the plurality of PUCCH resources in the specific PUCCH group in a case that the MAC CE is identified by a first logical channel ID (LCID); and
apply the MAC CE to the specific PUCCH resource in a case that the MAC CE is identified by a second LCID.
2. The UE of claim 1 , wherein the at least one processor is further configured to execute the computer-executable instructions to:
obtain an updated list of the plurality of configured PUCCH spatial relations by merging PUCCH spatial relations that correspond to a same receiving beam; and
transmit the updated list to the base station.
3. The UE of claim 1 , wherein the at least one processor is further configured to execute the computer-executable instructions to:
transmit, to the base station, information related to a receiving beam that corresponds to each of the plurality of configured PUCCH spatial relations.
4. The UE of claim 1 , wherein the MAC CE does not include an ID of any of the plurality of configured PUCCH groups.
5. A method for activating a physical uplink control channel (PUCCH) spatial relation, the method being performed by a user equipment (UE), the method comprising:
receiving, from a base station, a first radio resource control (RRC) message to configure a plurality of PUCCH spatial relations;
receiving, from the base station, a second RRC message to configure a plurality of PUCCH groups, wherein each of the plurality of PUCCH groups includes a plurality of PUCCH resources;
receiving, from the base station, a medium access control (MAC) control element (CE), wherein the MAC CE comprises:
a first field, for indicating an identifier (ID) of a specific PUCCH spatial relation to be activated or deactivated, wherein the specific PUCCH spatial relation is one of the plurality of configured PUCCH spatial relations; and
a second field, for indicating an ID of a specific PUCCH resource that is in a specific PUCCH group, wherein the specific PUCCH group is one of the plurality of configured PUCCH groups;
apply the MAC CE to all the plurality of PUCCH resources in the specific PUCCH group in a case that the MAC CE is identified by a first logical channel ID (LCID); and
apply the MAC CE to the specific PUCCH resource in a case that the MAC CE is identified by a second LCID.
6. The method of claim 5 , further comprising:
obtaining an updated list of the plurality of configured PUCCH spatial relations by merging PUCCH spatial relations that correspond to a same receiving beam; and
transmitting the updated list to the base station.
7. The method of claim 5 , further comprising:
transmitting, to the base station, information related to a receiving beam that corresponds to each of the plurality of configured PUCCH spatial relations.
8. The method of claim 5 , wherein the MAC CE does not include an ID of any of the plurality of configured PUCCH groups.