Quasi-co-location (qcl) indication for multi-transmission and reception point (trp) enabled sidelink communications

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

• receiving a message from a plurality of transmission and reception points (TRPs) of a transmitting sidelink UE, the message indicating a quasi-co-location (QCL) assumption for the TRPs;
• measuring reference signals received from each transmission port of the plurality of TRPs, individually;
• determining whether signaling from the plurality of TRPs satisfies all conditions for the QCL assumption;
• and
• reporting to the transmitting sidelink UE a result of the determining.

An apparatus for wireless communications by a transmitting sidelink user equipment (UE), comprising:

• at least one processor,
• memory coupled with the at least one processor;
• and
• instructions stored in the memory and operable, when executed by the at least one processor, to cause the apparatus:
• to determine at least one quasi-co-location (QCL) relationship between antenna ports of the transmitting sidelink UE, the at least one QCL relationship corresponding to carrier frequency offset (CFO), average delay, delay spread, Doppler shift, and/or Doppler spread across the antenna ports of the transmitting sidelink UE, each port mapping to a different transmission and reception point (TRP) of a plurality of TRPs;
• and
• to indicate the at least one QCL relationship to a receiving sidelink UE.

An apparatus for wireless communications by a receiving sidelink user equipment (UE), comprising:

• at least one processor,
• memory coupled with the at least one processor;
• and
• instructions stored in the memory and operable, when executed by the at least one processor, to cause the apparatus:
• to receive a message from a plurality of transmission and reception points (TRPs) of a transmitting sidelink UE, the message indicating a quasi-co-location (QCL) assumption for the TRPs;
• to measure reference signals received from each transmission port of the plurality of TRPs, individually;
• to determine whether signaling from the plurality of TRPs satisfies all conditions for the QCL assumption;
• and
• to report to the transmitting sidelink UE a result of the determining.