US 12,309,770 B2
Methods and apparatus for reference signal associations
Fang Yuan, Beijing (CN); Wooseok Nam, San Diego, CA (US); and Tao Luo, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Appl. No. 17/791,807
Filed by QUALCOMM Incorporated, San Diego, CA (US)
PCT Filed Jan. 29, 2021, PCT No. PCT/CN2021/074301
§ 371(c)(1), (2) Date Jul. 8, 2022,
PCT Pub. No. WO2021/151388, PCT Pub. Date Aug. 5, 2021.
Claims priority of application No. PCT/CN2020/074113 (WO), filed on Jan. 31, 2020.
Prior Publication US 2023/0045134 A1, Feb. 9, 2023
Int. Cl. H04W 72/1268 (2023.01); H04B 7/06 (2006.01); H04L 5/00 (2006.01)
CPC H04W 72/1268 (2013.01) [H04B 7/0639 (2013.01); H04L 5/0051 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A method of wireless communication by a user equipment (UE), comprising:
receiving an indicator for uplink transmission indicating at least an association between at least one of one or more first reference signal ports and at least one of one or more second reference signal ports for a plurality of precoding configurations, wherein receiving the indicator further comprises receiving a first bit comprising a first bit value indicating whether a first port of the one or more first reference signal ports is associated with a first port of the one or more second reference signal ports for a first precoding configuration of the plurality of precoding configurations for a first layer of the uplink transmission, and a second bit comprising a second bit value indicating whether the first port of the one or more first reference signal ports is associated with the first port or a second port of the one or more second reference signal ports for a second precoding configuration of the plurality of precoding configurations for the first layer of the uplink transmission;
transmitting, in response to receiving the indicator, a plurality of first reference signals based on the association via a plurality of antenna panels using the plurality of precoding configurations, wherein the plurality of first reference signals is associated with the one or more first reference signal ports; and
transmitting one or more second reference signals based on the association via the plurality of antenna panels using the plurality of precoding configurations, wherein the one or more second reference signals is associated with the one or more second reference signal ports.