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Title:
METHOD AND APPARATUS FOR DISCARDING BUFFERED DATA WHILE KEEPING CONNECTION IN CP-UP SEPARATION
Document Type and Number:
WIPO Patent Application WO/2019/194486
Kind Code:
A1
Abstract:
A method and apparatus for discarding a buffered data in a wireless communication system is described. A central unit (CU) user plane (UP) of a gNB receives a buffered data discard indication from a CU-control plane (CU-CP) of the gNB, and discards buffered data for a user equipment (UE) based on the buffered data discard indication. Even after discarding the buffered data, UE context is still kept. The CU-CP is a logical node constituting the gNB that hosts a radio resource control (RRC) protocol and a packet data convergence protocol (PDCP)-C protocol, and the CU-UP is a logical node constituting the gNB that hosts a PDCP-U protocol.

Inventors:
KIM SEOKJUNG (KR)
XU JIAN (KR)
BYUN DAEWOOK (KR)
Application Number:
PCT/KR2019/003779
Publication Date:
October 10, 2019
Filing Date:
April 01, 2019
Export Citation:
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Assignee:
LG ELECTRONICS INC (KR)
International Classes:
H04W76/27; H04W28/14
Foreign References:
Other References:
KT CORP: "Resource Management for Separation of CP and UP in CU", 3GPP TSG RAN WG3 #97BIS, R3-173810, 29 September 2017 (2017-09-29), Prague, Czech, XP051356354
CATT: "Discussion on RAN paging failure", 3GPP TSG RAN WG3 #97BIS, R3-173612, 29 September 2017 (2017-09-29), Prague, Czech, XP051344037
ERICSSON: "Bearer Context procedure", 3GPP TSG RAN WG3 #99, R3-181428, 12 March 2018 (2018-03-12), Athens, Greece, XP051416523
ERICSSON: "Dual Connectivity deployment options and relation to XnUP/X2UP/ F1UP", 3GPP TSG RAN WG3 NR AH #2, R3-172549, 19 June 2017 (2017-06-19), Qingdao, China, XP051307852
INTEL CORPORATION: "Enhancements for intra CU -CP handover in NG-RAN with separated CP and UP", 3GPP TSG RAN WG3 #98, R3-174630, 17 November 2017 (2017-11-17), Reno, USA, XP051373205
See also references of EP 3747236A4
Attorney, Agent or Firm:
ENVISION PATENT & LAW FIRM (KR)
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