| CPC H04L 5/0048 (2013.01) [H04W 74/0833 (2013.01)] | 30 Claims |
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1. An apparatus for wireless communication, comprising:
a transceiver;
a memory configured to store instructions; and
one or more processors communicatively coupled with the memory and the transceiver, wherein the one or more processors are configured to:
receive, from a base station, a configuration indicating multiple reference signal ports to use in transmitting reference signals for a random access message;
receive, from the base station, a random access response (RAR) message in response to an initial random access message, wherein the RAR message indicates a reference signal port, of the multiple reference signal ports, for transmitting a reference signal for the random access message, and wherein the reference signal port is indicated by one or more reserved bits in the RAR message; and
transmit, to the base station, the reference signal for the random access message based on the reference signal port of the multiple reference signal ports.
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