US 12,349,228 B2
Method for controlling sidelink communication, and apparatus therefor
Sung-pyo Hong, Seoul (KR)
Assigned to KT CORPORATION, Gyeonggi-do (KR)
Appl. No. 17/769,878
Filed by KT CORPORATION, Gyeonggi-do (KR)
PCT Filed Oct. 15, 2020, PCT No. PCT/KR2020/014061
§ 371(c)(1), (2) Date Apr. 18, 2022,
PCT Pub. No. WO2021/080240, PCT Pub. Date Apr. 29, 2021.
Claims priority of application No. 10-2019-0133035 (KR), filed on Oct. 24, 2019; and application No. 10-2020-0127914 (KR), filed on Oct. 5, 2020.
Prior Publication US 2022/0394810 A1, Dec. 8, 2022
Int. Cl. H04W 76/28 (2018.01); H04L 1/1812 (2023.01); H04W 24/08 (2009.01); H04W 72/23 (2023.01); H04W 92/18 (2009.01)
CPC H04W 76/28 (2018.02) [H04L 1/1812 (2013.01); H04W 24/08 (2013.01); H04W 72/23 (2023.01); H04W 92/18 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method for performing sidelink communication by a user equipment (UE), the method comprising,
receiving, from a base station, sidelink discontinuous reception configuration information for controlling an operation for monitoring a physical downlink control channel (PDCCH) associated with a sidelink radio network temporary identifier (RNTI);
receiving a PDCCH for sidelink data transmission; and
controlling the PDCCH monitoring operation in a PDCCH discontinuous monitoring period set based on a discontinuous reception (DRX) parameter included in the sidelink discontinuous reception configuration information,
wherein the DRX parameter includes a discontinuous reception retransmission sidelink timer for indicating maximum duration until the grant for the sidelink retransmission is received,
wherein the discontinuous reception retransmission sidelink timer starts when a preset event occurs after the discontinuous reception HARQ RTT sidelink timer expires, and
wherein the preset event includes at least one of i) when sidelink data is not successfully transmitted, ii) when receiving HARQ feedback information indicating failure in transmission of sidelink data, and iii) when transmitting, to the base station, the HARQ feedback information indicating a failure in transmission for the sidelink data.