Methods and apparatus for TRP differentiation based on SSB grouping

An apparatus for wireless communication of a user equipment (UE), comprising:

• a memory;
• and
• at least one processor coupled to the memory and configured to:
• receive synchronization signal block (SSB) grouping information associated with one or more SSB groups, each of the one or more SSB groups including one or more transmit-receive points (TRPs), wherein each of the one or more SSB groups includes multiple SSBs, and each of the multiple SSBs is associated with a respective SSB attribute;
• receive at least one of transmission configuration indication (TCI) information or quasi co-location (QCL) information, each of the TCI information and the QCL information indicating an SSB of the one or more SSB groups that is associated with a downlink transmit (Tx) beam for downlink data or an uplink receive (Rx) beam for uplink data;
• select at least one Rx beam or Tx beam for communication based on at least one SSB attribute associated with at least one of the multiple SSBs, wherein the at least one Rx beam or Tx beam is selected based on a first SSB attribute associated with a first SSB in one of the one or more SSB groups or based on a second SSB attribute associated with the multiple SSBs in each of the one or more SSB groups;
• and
• communicate the downlink data from, or the uplink data to, the TRPs in a same SSB group of the one or more SSB groups or the TRPs in different SSB groups of the one or more SSB groups based on at least one of the SSB grouping information, the TCI information, or the QCL information.

A method of wireless communication of a base station, the base station being a transmit-receive point (TRP), comprising:

• transmitting synchronization signal block (SSB) grouping information associated with one or more SSB groups, each of the one or more SSB groups including one or more TRPs, wherein each of the one or more SSB groups includes multiple SSBs, and each of the multiple SSBs in the one or more SSB groups is associated with a respective SSB attribute;
• transmitting at least one of transmission configuration indication (TCI) information or quasi co-location (QCL) information, each of the TCI information and the QCL information indicating an SSB of the one or more SSB groups that is associated with a downlink transmit (Tx) beam for downlink data or an uplink receive (Rx) beam for uplink data;
• and
• communicating the downlink data to, or the uplink data from, at least one user equipment (UE) based on at least one of the SSB grouping information, the TCI information, or the QCL information, wherein at least one Rx beam is used for communication based on a first SSB attribute associated with a first SSB in one of the one or more SSB groups or based on a second SSB attribute associated with the multiple SSBs in each of the one or more SSB groups.

An apparatus for wireless communication of a base station, the base station being a transmit-receive point (TRP), comprising:

• a memory;
• and
• at least one processor coupled to the memory and configured to:
• transmit synchronization signal block (SSB) grouping information associated with one or more SSB groups, each of the one or more SSB groups including one or more TRPS, wherein each of the one or more SSB groups includes multiple SSBs, and each of the multiple SSBs in the one or more SSB groups is associated with a respective SSB attribute;
• transmit at least one of transmission configuration indication (TCI) information or quasi co-location (QCL) information, each of the TCI information and the QCL information indicating an SSB of the one or more SSB groups that is associated with a downlink transmit (Tx) beam for downlink data or an uplink receive (Rx) beam for uplink data;
• and
• communicate the downlink data to, or the uplink data from, at least one user equipment (UE) based on at least one of the SSB grouping information, the TCI information, or the QCL information, wherein at least one Rx beam is used for communication based on a first SSB attribute associated with a first SSB in one of the one or more SSB groups or based on a second SSB attribute associated with the multiple SSBs in each of the one or more SSB groups.