US 11,864,238 B2
Mapping aspects of random access channel procedure
Ahmed Abdelaziz Ibrahim Abdelaziz Zewail, San Diego, CA (US); Xiaoxia Zhang, San Diego, CA (US); Tao Luo, San Diego, CA (US); Qiang Wu, San Diego, CA (US); Jun Ma, San Diego, CA (US); Iyab Issam Sakhnini, San Diego, CA (US); Mehmet Izzet Gurelli, San Diego, CA (US); Anantha Krishna Karthik Nagarajan, San Diego, CA (US); Jing Sun, San Diego, CA (US); Juan Montojo, San Diego, CA (US); and Peter Gaal, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Jun. 30, 2021, as Appl. No. 17/305,067.
Claims priority of provisional application 63/046,946, filed on Jul. 1, 2020.
Prior Publication US 2022/0007421 A1, Jan. 6, 2022
Int. Cl. H04L 12/26 (2006.01); H04W 74/08 (2009.01); H04W 24/08 (2009.01)
CPC H04W 74/0833 (2013.01) [H04W 24/08 (2013.01)] 30 Claims
OG exemplary drawing
 
1. A method of wireless communication performed by a user equipment (UE), comprising:
receiving, from a base station, a random access configuration indicating synchronization signal block (SSB)-to-random access channel (RACH) occasion mapping information, the SSB-to-RACH occasion mapping information being associated with:
a first set of RACH occasions that are valid for each UE associated with the base station based at least in part on a configured time gap value, and
a second set of RACH occasions that are valid for a proper subset of UEs associated with the base station based at least in part on another time gap value indicated by the base station,
wherein RACH occasions of the first set of RACH occasions or the second set of RACH occasions are valid based at least in part on a quantity of symbols between a symbol of an SSB and a symbol of a RACH occasion satisfying a time gap value;
selecting a RACH occasion based at least in part on the SSB-to-RACH occasion mapping information; and
transmitting, to the base station, a physical RACH (PRACH) communication using the RACH occasion based at least in part on selecting the RACH occasion.