METHOD AND APPARATUS FOR PREVENTING LOSS OF UPLINK DATA IN WIRELESS COMMUNICATION SYSTEM

WIPO Patent Application WO/2020/067736

A1

A method and apparatus for preventing loss of uplink data in wireless communication system is provided. A central unit (CU) of an integrated access and backhaul (IAB)-donor receives, from a wireless device, uplink data through a source IAB-node. The CU of the IAB-donor receives, from the source IAB-node, a message which informs that uplink packets among the uplink data are remained on the source IAB-node, wherein the message is related to handover procedures of the wireless device from the source IAB-node to a target IAB-node. The CU of the IAB-donor proceeds the handover procedures, after receiving the uplink packets.

BYUN DAEWOOK (KR)
CHO HEEJEONG (KR)
XU JIAN (KR)
KIM SEOKJUNG (KR)

PCT/KR2019/012523

April 02, 2020

September 26, 2019

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LG ELECTRONICS INC (KR)

H04W36/02; H04W36/08; H04W36/18; H04W84/04

US20160029289A1	2016-01-28
US20090163207A1	2009-06-25

POTEVIO: "The mobility in IAB", R2-1812673, 3GPP TSG-RAN WG2 MEETING #103, 10 August 2018 (2018-08-10), pages 2 - 4, XP051522267
INTEL CORPORATION: "Stage-3 TP for Xn SN Status Transfer", R3-182855, 3GPP TSG-RAN WG3 MEETING #100, 11 May 2018 (2018-05-11), pages 1 - 2, XP051445355
QUALCOMM INCORPORATED: "TR 38.874, Version 0.5.0", R2-1814069, 3GPP TSG-RAN WG2 MEETING #103BIS, 26 September 2018 (2018-09-26), pages 13 , 50 , 59 - 62, XP051523530

ENVISION PATENT & LAW FIRM (KR)

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