US 12,004,222 B2
Method and device for transmitting random access signal, and computer readable medium
Qi Xiong, Beijing (CN); Feifei Sun, Beijing (CN); Yi Wang, Beijing (CN); and Bin Yu, Beijing (CN)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Appl. No. 17/423,001
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
PCT Filed Sep. 24, 2020, PCT No. PCT/KR2020/012963
§ 371(c)(1), (2) Date Jul. 14, 2021,
PCT Pub. No. WO2021/060874, PCT Pub. Date Apr. 1, 2021.
Claims priority of application No. 201910926080.6 (CN), filed on Sep. 27, 2019; application No. 201911032625.5 (CN), filed on Oct. 28, 2019; application No. 201911084041.2 (CN), filed on Nov. 7, 2019; application No. 201911327951.9 (CN), filed on Dec. 20, 2019; and application No. 10-2020-0123537 (KR), filed on Sep. 24, 2020.
Prior Publication US 2022/0104268 A1, Mar. 31, 2022
Int. Cl. H04W 74/08 (2009.01); H04L 5/00 (2006.01); H04W 74/0833 (2024.01)
CPC H04W 74/0833 (2013.01) [H04L 5/0048 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for 2-step random access (RA) performed by a terminal in a communication system, the method comprising:
receiving, from a base station, a first random access channel (RACH) configuration for 4-step RA, a second RACH configuration for the 2-step RA, and physical uplink shared channel (PUSCH) configuration, the first RACH configuration including information on RA occasions for the 4-step RA;
in case that a type of a random access is the 2-step RA, identifying an RA occasion for the 2-step RA, wherein, in case that an index indicating a subset of the RA occasions for the 4-step RA shared with the 2-step RA is configured, the RA occasion for the 2-step RA is associated with the subset of the RA occasions for the 4-step RA, and wherein, in case that the index indicating the subset of the RA occasions for the 4-step RA shared with the 2-step RA is not configured, the RA occasion for the 2-step RA is associated with all of the RA occasions for the 4-step RA; and
transmitting, to the base station, a random access preamble in the RA occasion for the 2-step RA.