Configuring shared reference beams

1 . A user equipment (UE), comprising:

at least one memory; and

at least one processor coupled with the at least one memory and configured to cause the UE to:

receive, from a network entity, a group-common first configuration comprising a first shared reference beam and a first beam identifier (ID) associated with the first shared reference beam;

receive, from the network entity, a group-common second configuration comprising a second shared reference beam relative to the first shared reference beam and a second beam ID associated with the second shared reference beam;

receive, from the network entity, a third configuration comprising shared reference signals that are for channel measurement and reporting and that are quasi-co-located with the first shared reference beam, wherein the shared reference signals are quasi-co-located with the first shared reference beam;

receive, from the network entity, a fourth configuration comprising a shared beam ID for wireless communication with the network entity, the shared beam ID comprising the first beam ID, the second beam ID, or a combination thereof; and

perform the wireless communication using a shared beam associated with the shared beam ID.

2 . The UE of claim 1 , wherein the at least one processor is configured to cause the UE to receive information from the network entity, wherein the information indicates reference point coordinates for determining a reference line for calculating an orientation of the first shared reference beam.

3 . The UE of claim 2 , wherein the reference point coordinates are coordinates of at least one transmission and reception point (TRP).

4 . The UE of claim 2 , wherein the reference point coordinates are not coordinates of at least one transmission and reception point (TRP).

5 . The UE of claim 1 , wherein the at least one processor is configured to cause the UE to receive information from the network entity, wherein the information configures multiple beam category groups, and each beam category group of the multiple beam category groups is associated with a beam category group ID and parameters corresponding to a beam type.

6 . The UE of claim 5 , wherein the beam type comprises a 3 dB beamwidth, a specific beam shape, a specific antenna virtualization pattern, or some combination thereof.

7 . The UE of claim 1 , wherein the at least one processor is configured to cause the UE to receive information from the network entity, wherein the information indicates at least one beam category group.

8 . The UE of claim 1 , wherein the at least one processor is configured to cause the UE to request that the network entity trigger a beam category group update, wherein the request indicates a new beam category group different from a previous beam category group indicated by the UE.

9 . The UE of claim 8 , wherein the at least one processor is configured to cause the UE to indicate a change from wide beams to narrow beams based on the beam category group update.

10 . The UE of claim 8 , wherein the at least one processor is configured to cause the UE to indicate a change from narrow beams to wide beams based on the beam category group update.

11 . A method performed by a user equipment (UE), the method comprising:

receiving, from a network entity, a group-common first configuration comprising a first shared reference beam and a first beam identifier (ID) associated with the first shared reference beam;

receiving, from the network entity, a group-common second configuration comprising a second shared reference beam relative to the first shared reference beam and a second beam ID associated with the second shared reference beam;

receiving, from the network entity, a third configuration comprising shared reference signals that are for channel measurement and reporting and that are quasi-co-located with the first shared reference beam, wherein the shared reference signals are quasi-co-located with the first shared reference beam;

receiving, from the network entity, a fourth configuration comprising a shared beam ID for wireless communication with the network entity, the shared beam ID comprising the first beam ID, the second beam ID, or a combination thereof; and

performing the wireless communication using a shared beam associated with the shared beam ID.

12 . The method of claim 11 , further comprising receiving information from the network entity, wherein the information indicates reference point coordinates for determining a reference line for calculating an orientation of the first shared reference beam.

13 . A base station, comprising:

at least one memory; and

at least one processor coupled with the at least one memory and configured to cause the base station to:

transmit, to a user equipment (UE), a group-common first configuration comprising a first shared reference beam and a first beam identifier (ID) associated with the first shared reference beam;

transmit, to the UE, a group-common second configuration comprising a second shared reference beam relative to the first shared reference beam and a second beam ID associated with the second shared reference beam;

transmit, to the UE, a third configuration comprising shared reference signals that are for channel measurement and reporting and that are quasi-co-located with the first shared reference beam, wherein the shared reference signals are quasi-co-located with the first shared reference beam;

transmit, to the UE, a fourth configuration comprising a shared beam ID for wireless communication with the UE, the shared beam ID comprising the first beam ID, the second beam ID, or a combination thereof; and

perform the wireless communication using a shared beam associated with the shared beam ID.

14 . The base station of claim 13 , wherein the at least one processor is further configured to cause the base station to determine a reference line between a location point of the base station and a UE location point, and estimating an orientation of the first shared reference beam relative to the reference line based on measurements reported by the UE for receiving at least one downlink (DL) reference signal (RS) beam, wherein a UE RX beam is used to receive the at least one DL RS beam.

15 . The base station of claim 14 , wherein the reference line is the same for all UEs at a given location point.

16 . A processor for wireless communication, comprising:

at least one controller coupled with at least one memory and configured to cause the processor to:

receive, from a network entity, a group-common first configuration comprising a first shared reference beam and a first beam identifier (ID) associated with the first shared reference beam;

receive, from the network entity, a group-common second configuration comprising a second shared reference beam relative to the first shared reference beam and a second beam ID associated with the second shared reference beam;

receive, from the network entity, a third configuration comprising shared reference signals that are for channel measurement and reporting and that are quasi-co-located with the first shared reference beam, wherein the shared reference signals are quasi-co-located with the first shared reference beam;

receive, from the network entity, a fourth configuration comprising a shared beam ID for wireless communication with the network entity, the shared beam ID comprising the first beam ID, the second beam ID, or a combination thereof; and

perform the wireless communication using a shared beam associated with the shared beam ID.

17 . The processor of claim 16 , wherein the at least one controller is configured to cause the processor to receive information from the network entity, wherein the information indicates reference point coordinates for determining a reference line for calculating an orientation of the first shared reference beam.

18 . The processor of claim 17 , wherein the reference point coordinates are coordinates of at least one transmission and reception point (TRP).

19 . The processor of claim 17 , wherein the reference point coordinates are not coordinates of at least one TRP.

20 . The processor of claim 16 , wherein the at least one controller is configured to cause the processor to receive information from the network entity, wherein the information configures multiple beam category groups, and each beam category group of the multiple beam category groups is associated with a beam category group ID and parameters corresponding to a beam type.