	US 12,219,630 B2
	Method and apparatus for processing out-of-order delivery for PDCP layer in wireless D2D communication system
Hyunjeong Kang, Suwon-si (KR); and Sangkyu Baek, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Appl. No. 17/754,410
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
PCT Filed Sep. 29, 2020, PCT No. PCT/KR2020/013366 § 371(c)(1), (2) Date Mar. 31, 2022, PCT Pub. No. WO2021/066538, PCT Pub. Date Apr. 8, 2021.
Claims priority of application No. 10-2019-0122657 (KR), filed on Oct. 2, 2019; and application No. 10-2020-0035233 (KR), filed on Mar. 23, 2020.
Prior Publication US 2022/0386396 A1, Dec. 1, 2022
Int. Cl. H04W 76/14 (2018.01); H04W 28/04 (2009.01)

CPC H04W 76/14 (2018.02) [H04W 28/04 (2013.01)]

8 Claims

1. An operation method of a first user equipment (UE) in a wireless communication system, the operation method comprising:

transmitting, to a second UE, first UE sidelink capability information including out-of-order delivery capability information of a packet data convergence protocol (PDCP) layer of the first UE;

receiving, from the second UE, second UE sidelink capability information including out-of-order delivery capability information of a PDCP layer of the second UE;

receiving, from the second UE, configuration information configured for a sidelink radio bearer, wherein the configuration information includes information on whether out-of-order delivery is configured or not; and

processing sidelink data received from the second UE, based on the configuration information, wherein the processing of the sidelink data received from the second UE comprises:

receiving, from a lower layer, a PDCP data protocol data unit (PDU) by the PDCP layer of the first UE;

identifying whether out-of-order delivery is configured for the sidelink radio bearer; and

transmitting, to an upper layer, a PDCP service data unit (SDU) by the PDCP layer of the first UE in case that the out-of-order delivery is configured for the sidelink radio bearer.