Qualcomm Incorporated

Tianyang Bai

Tao Luo

Wooseok Nam

Jung Ho Ryu

Makesh Pravin John Wilson

Kiran Venugopal

Sungwoo Park

Apparatus, methods, and computer-readable media for facilitating cross-carrier beam association are disclosed herein. An example method for wireless communication at a UE includes receiving, from a base station, an indication of a cross-carrier beam association associated with a first carrier and a second carrier different than the first carrier. The example method also includes determining an association between a first set of beams of the first carrier and a second set of beams of the second carrier based on the indication of the cross-carrier beam association. Additionally, the example method includes receiving on the first set of beams and the second set of beams based on the determined cross-carrier beam association.

Methods and apparatus to facilitate cross-carrier beam association

Certain aspects of the present disclosure provide techniques for precoding for multi-panel uplink transmission. For codebook-based uplink transmission, a user equipment (UE) can determine one or more preferred or selected precoders for uplink transmission. The precoders can be from an expanded UE codebook that maps a first number of transmit layers at the UE to a second number of antenna ports at the UE, the layers and/or antenna ports associated with multiple uplink transmit panels at the UE. The UE sends an indication to a base station (BS) of the determined precoders and/or sends an uplink transmission using the determined precoders. For non-codebook based uplink transmission the UE receives first and second reference signals (RSs), from first and second ports of a BS, with first and second UE antenna panels. The UE computes precoders to use for uplink transmission based on the RSs.

Precoders for multi-panel uplink transmission

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Somerville, NJ, United States of America

Tianyang Bai