US 12,457,635 B2
Method and device for supporting random access for low-capability terminal in wireless communication system
Jaehyuk Jang, Suwon-si (KR); and Soenghun Kim, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Appl. No. 17/995,056
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
PCT Filed Mar. 31, 2021, PCT No. PCT/KR2021/004024
§ 371(c)(1), (2) Date Sep. 29, 2022,
PCT Pub. No. WO2021/201611, PCT Pub. Date Oct. 7, 2021.
Claims priority of application No. 10-2021-0042196 (KR), filed on Mar. 31, 2020; and application No. 10-2020-0039862 (KR), filed on Apr. 1, 2020.
Prior Publication US 2023/0132057 A1, Apr. 27, 2023
Int. Cl. H04W 74/0833 (2024.01); H04W 74/00 (2009.01); H04W 74/0838 (2024.01)
CPC H04W 74/004 (2013.01) [H04W 74/0833 (2013.01); H04W 74/0838 (2024.01)] 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, a system information block (SIB) including a first parameter set for a random access and information related to whether the terminal is supported, wherein the terminal is a reduced capability terminal and a bandwidth supported by the reduced capability terminal is limited to a predetermined value;
identifying whether a cell on which the SIB is received is available to access based on the information;
in case that the cell is identified to be available to access based on the information, identifying whether the SIB includes a second parameter set for a random access, the second parameter set being associated with the reduced capability terminal;
in case that the SIB includes the second parameter set for the random access, transmitting, to the base station, a random access preamble based on the second parameter set;
receiving, from the base station, downlink control information (DCI) associated with a random access-radio network temporary identifier (RA-RNTI);
determining a slot offset between the DCI and a physical downlink shared channel (PDSCH); and
receiving, from the base station, a random access response in the PDSCH based on the slot offset,
wherein the SIB includes first PDSCH time domain allocation list information and second PDSCH time domain allocation list information, the second PDSCH time domain allocation list information being associated with the reduced capability terminal, and
wherein the slot offset is determined based on the second PDSCH time domain allocation list information.