	US 12,232,183 B2
	Alternative demodulation reference signal for repetitions of a random access response physical downlink control channel communication
Mahmoud Taherzadeh Boroujeni, San Diego, CA (US); and Tao Luo, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Jul. 13, 2021, as Appl. No. 17/305,695.
Claims priority of provisional application 63/065,383, filed on Aug. 13, 2020.
Claims priority of provisional application 63/064,636, filed on Aug. 12, 2020.
Prior Publication US 2022/0053574 A1, Feb. 17, 2022
Int. Cl. H04W 74/0833 (2024.01); H04L 1/1867 (2023.01); H04L 5/00 (2006.01); H04L 27/26 (2006.01); H04W 74/00 (2009.01); H04W 74/0836 (2024.01)

CPC H04W 74/0841 (2013.01) [H04L 5/0051 (2013.01); H04L 27/2607 (2013.01); H04W 74/006 (2013.01)]

30 Claims

1. A method of wireless communication performed by a user equipment (UE), comprising:

receiving an indication of an alternative configuration associated with a physical downlink control channel (PDCCH) communication associated with a random access response (RAR) message;

receiving one or more repetitions of the PDCCH communication associated with the RAR message;

determining whether at least one of the one or more repetitions of the PDCCH communication includes a demodulation reference signal (DMRS) that uses the alternative configuration;

decoding a timing parameter for a timing of the RAR message, included in the PDCCH communication, based on the one or more repetitions of the PDCCH communication; and

interpreting the timing parameter to determine the timing of the RAR message based on the determination of whether at least one of the one or more repetitions of the PDCCH communication includes a DMRS that uses the alternative configuration.