Methods and apparatus for power headroom reporting for multiple transmission reception point (multi-trp) transmissions

A power headroom report comprising:

• a measurement related to transmit power of a user equipment;
• and
• a timer calculation by the user equipment related to a transmission reception point (TRP) among a plurality of transmission reception points during multiple transmission reception point (mTRP) operation, the timer calculation configured by the user equipment upon detection of a triggering of a plurality of pathloss references from a plurality of transmission reception points (TRPs), the timer calculation determined independently for each respective TRP during multiple transmission reception point (mTRP) operation.

A method for a transmission reception point (TRP) in a wireless network comprising:

• receiving a power headroom report from a user equipment during multiple transmission reception point (mTRP) operation, the power headroom report received concurrently with power headroom reporting received at each other TRP in use during the mTRP operation upon detection by the user equipment of triggered pathloss references between activation of successive power headroom reporting instances;
• and
• receiving the power headroom report with uplink signals from the user equipment concurrently with each other TRP in use during the mTRP operation, the uplink signals including one of a control channel (PUCCH) control loop, a physical uplink shared channel (PUSCH) and a sending reference signal (SRS) control loop.