US 11,895,707 B2
Method and apparatus for supporting multiple message a sizes and uplink coverage for two step random access procedure
Anil Agiwal, Suwon-si (KR); and Jaehyuk Jang, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Jul. 9, 2021, as Appl. No. 17/371,791.
Application 17/371,791 is a continuation of application No. 16/578,916, filed on Sep. 23, 2019, granted, now 11,064,534, issued on Jul. 13, 2021.
Claims priority of provisional application 62/734,540, filed on Sep. 21, 2018.
Prior Publication US 2021/0337601 A1, Oct. 28, 2021
Int. Cl. H04W 76/27 (2018.01); H04W 74/00 (2009.01); H04B 7/0426 (2017.01); H04B 17/318 (2015.01); H04W 28/26 (2009.01); H04W 74/08 (2009.01); H04W 24/08 (2009.01); H04L 5/00 (2006.01); H04W 4/70 (2018.01); H04W 72/542 (2023.01)
CPC H04W 74/0833 (2013.01) [H04B 17/318 (2015.01); H04L 5/0048 (2013.01); H04W 24/08 (2013.01); H04W 4/70 (2018.02); H04W 72/542 (2023.01)] 20 Claims
OG exemplary drawing
 
1. A method performed by a terminal in a wireless communication system, the method comprising:
receiving, from a base station, first information on first uplink resources for a first message of a 2-step random access procedure, second information on second uplink resources for the first message of the 2-step random access procedure, third information on a threshold size to determine the first uplink resources or the second uplink resources for the first message of the 2-step random access procedure, and fourth information on a reference signal received power (RSRP) threshold for selection between the 2-step random access procedure and a 4-step random access procedure;
selecting a random access type as the 2-step random access procedure based on an RSRP for downlink being above the RSRP threshold;
identifying whether a size of information to be included in the first message is greater than the threshold size based on the 2-step random access procedure being selected;
in case that the size of the information is greater than the threshold size, selecting the first uplink resources;
in case that the size of the information is not greater than the threshold size, selecting the second uplink resources; and
transmitting, to the base station, the first message of the 2-step random access procedure using a resource from the selected uplink resources.