User equipment assist information for timing management for multi-trp in wireless communication

A user equipment (UE) comprising:

• a processor;
• and
• a memory storing instructions that, when executed by the processor, configure the UE to:
• establish a first connection with a first transmission and reception point (TRP):
• receive and decode a downlink time difference (DL TD) measurement configuration, the DL TD measurement configuration comprising configuration of reference signals from the first TRP and a second TRP that are used for measuring a DL TD between the first TRP and the second TRP:
• measure the DL TD using the reference signals from the first TRP and the second TRP to determine a relative receiving timing difference at the UE between the first TRP and the second TRP:
• report the DL TD to a network node;
• and
• receive a multi-TRP configuration for establishing a connection with the second TRP when the DL TD is equal or smaller than a threshold value;
• and
• establish a second connection with the second TRP based on the multi-TRP configuration while maintaining the first connection with the first TRP.

A method for a network node, the method comprising:

• sending, to a user equipment (UE), a downlink time difference (DL TD) measurement configuration, the DL TD measurement configuration comprising configuration of reference signals from a first transmission and reception point (TRP) and a second TRP that are used for measuring a DL TD between the first TRP and the second TRP;
• receiving a report comprising DL TD measurements obtained using the reference signals from the first TRP and the second TRP to determine a relative receiving timing difference at the UE between the first TRP and the second TRP;
• and
• configuring the UE for multi-transmission and reception operation to establish a connection with the second TRP when the DL TD is equal or smaller than a threshold value.