Patent ID: 11895707
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
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.