US 11,856,638 B2
Discontinuous reception configuration and sidelink operation with mode-1 and mode-2 scheduling
Sony Akkarakaran, Poway, CA (US); Ling Ding, Chester, NJ (US); Junyi Li, Franklin Park, NJ (US); Tao Luo, San Diego, CA (US); Jung Ho Ryu, Fort Lee, NJ (US); Jelena Damnjanovic, Del Mar, CA (US); Kapil Gulati, Belle Mead, NJ (US); and Hong Cheng, Basking Ridge, NJ (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Feb. 10, 2021, as Appl. No. 17/173,013.
Claims priority of provisional application 62/975,071, filed on Feb. 11, 2020.
Claims priority of provisional application 62/975,079, filed on Feb. 11, 2020.
Prior Publication US 2021/0251037 A1, Aug. 12, 2021
Int. Cl. H04W 76/28 (2018.01); H04W 72/23 (2023.01); H04W 92/18 (2009.01)
CPC H04W 76/28 (2018.02) [H04W 72/23 (2023.01); H04W 92/18 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A method of wireless communication for a first user equipment (UE), comprising:
receiving a first sidelink grant for a transmission between the first UE and a second UE;
communicating the transmission according to the first sidelink grant;
starting a configured duration of a sidelink round trip time timer after the transmission;
starting a configured duration of a sidelink retransmission timer from an end of the sidelink round trip time timer, wherein the configured duration of the sidelink round trip time timer and the configured duration of the sidelink retransmission timer are specific for a direction of the transmission;
starting an inactivity timer after receiving the first sidelink grant, wherein a duration of the inactivity timer is a configured duration for a sidelink inactivity;
allowing start of a discontinuous reception (DRX) mode for the first UE after the configured duration of the sidelink retransmission timer if a second grant for a sidelink retransmission is not received during the sidelink retransmission timer and in response to expiration of the inactivity timer.