US 12,425,154 B2
Quasi co-location type for doppler pre-compensated reference signal
Alexandros Manolakos, Escondido, CA (US); Muhammad Sayed Khairy Abdelghaffar, San Jose, CA (US); and Krishna Kiran Mukkavilli, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Appl. No. 17/796,458
Filed by QUALCOMM INCORPORATED, San Diego, CA (US)
PCT Filed Mar. 10, 2021, PCT No. PCT/US2021/021732
§ 371(c)(1), (2) Date Jul. 29, 2022,
PCT Pub. No. WO2021/183662, PCT Pub. Date Sep. 16, 2021.
Claims priority of application No. 20200100140 (GR), filed on Mar. 13, 2020.
Prior Publication US 2023/0344575 A1, Oct. 26, 2023
Int. Cl. H04W 72/04 (2023.01); H04L 5/00 (2006.01); H04W 56/00 (2009.01); H04W 76/00 (2018.01); H04W 88/08 (2009.01)
CPC H04L 5/0048 (2013.01) [H04W 56/004 (2013.01)] 29 Claims
OG exemplary drawing
 
1. A method for wireless communication at a user equipment (UE), comprising:
receiving, from a base station, an indication of a quasi co-location relationship indicating a relationship between a plurality of tracking reference signals and a single demodulation reference signal port of the UE that corresponds to a demodulation reference signal of a data channel, the plurality of tracking reference signals comprising at least a first tracking reference signal and a second tracking reference signal;
receiving, from a first transmission reception point, the first tracking reference signal associated with an occasion of the data channel, the first tracking reference signal pre-compensated by a Doppler shift pre-compensation, or a Doppler spread pre-compensation, or both based at least in part on the indication of the quasi co-location relationship;
receiving, from a second transmission reception point, the second tracking reference signal associated with the occasion of the data channel, wherein the first tracking reference signal from the first transmission reception point and the second tracking reference signal from the second transmission reception point are associated with a single layer of the data channel; and
performing, based at least in part on the indication of the quasi co-location relationship, a channel estimation procedure for the data channel based at least in part on the demodulation reference signal, the received first tracking reference signal, and the received second tracking reference signal.