QUALCOMM Incorporated
Simultaneous message transmissions in RACH with multiple TRP

Abstract:

In an aspect, the present disclosure includes a method, apparatus, and computer readable medium for wireless communications at a UE, comprising receiving a RACH configuration from a network entity of a primary cell, the RACH configuration identifies at least two sets of RSs each corresponding to one of at least two different TRPs of a secondary cell; measuring one or more transmissions on each of the at least two sets of RSs for the at least two different TRPs; selecting at least a pair of RSs from the at least two different TRPs for a RACH procedure based on measuring the one or more transmissions; and transmitting a MSG1 of the RACH procedure with at least the pair of RSs on at least two allocated RACH occasions simultaneously to each TRP of the at least two different TRPs using at least one of FDM and SDM.