Sounding Reference Signal (SRS) Power Control Enhancement for Multi-Panel Transmission

Abstract

This disclosure relates to enhanced methods of sounding reference signal (SRS) power control, especially for multi-panel transmissions. Typically, with simultaneous physical uplink shared channel (PUSCH) transmissions, two user equipment (UE) antenna panels are utilized. Different panels may observe different pathloss measurements and/or experience different channel conditions. Therefore, power control enhancement techniques are disclosed herein to address per-panel power control, including: Open Loop Power Control (OLPC) SRS power control enhancement; Closed Loop Power Control (CLPC) SRS power control enhancement; and various MAC CE enhancements for updating one or more SRS Resource sets simultaneously. Enhanced methods may comprise: receiving, at a UE, a configuration of at least one (and preferably two) SRS resource sets for codebook-based (and/or non-codebook-based) PUSCH transmissions (wherein, e.g., the SRS resource sets comprise independently configurable power control parameter sets); and then transmitting a multi-panel transmission to at least one base station, according to the configured SRS resource set(s).

Dependencies are inferred from the claim text.