Title:
METHOD AND DEVICE FOR SUPPORTING HANDOVER
Document Type and Number:
WIPO Patent Application WO/2021/242035
Kind Code:
A1
Abstract:
The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. According to an aspect of the embodiments of the present disclosure, a method for supporting handover is provided, comprising: receiving a message from a central unit control plane entity of a target base station; receiving a data packet from a source base station; and discarding a packet data convergence protocol (PDCP) service data unit (SDU) including the PDCP sequence number (SN) in the received data packet according to the indication of the message. The problem of coordinated work between the source base station and the target base station during the handover process may be solved. Especially when the source base station and/or the target base station support the separation of the control plane and the user plane, ensure that the central unit control plane entity of the source base station, the central unit user plane entity of the source base station, the central unit control plane entity of the target base station and/or the central unit user plane entity of the target base station may fully coordinately work.
Inventors:
XU LIXIANG (CN)
WANG HONG (CN)
WANG WEIWEI (CN)
WANG HONG (CN)
WANG WEIWEI (CN)
Application Number:
PCT/KR2021/006636
Publication Date:
December 02, 2021
Filing Date:
May 28, 2021
Export Citation:
Assignee:
SAMSUNG ELECTRONICS CO LTD (KR)
International Classes:
H04W36/00; H04W36/02; H04W36/08; H04W88/08
Domestic Patent References:
| WO2019194486A1 | 2019-10-10 |
Other References:
HUAWEI: "(TP for NR_Mob_enh-Core BL CR for TS 38.463): Early Forwarding support over E1", 3GPP DRAFT; R3-202416, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG3, no. E-Meeting; 20200224 - 20200306, 10 April 2020 (2020-04-10), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051874208
INTEL CORPORATION, ZTE, GOOGLE, CATT, HUAWEI, SAMSUNG, NEC, LGE: "Early Forwarding support for DAPS/CHO over E1", 3GPP DRAFT; R3-203776, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG3, no. Electronic Meeting; 20200601 - 20200611, 22 May 2020 (2020-05-22), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051889472
SAMSUNG: "Support direct data forwarding for inter-system handover", 3GPP DRAFT; R3-203624, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG3, no. 20200601 - 20200611, 22 May 2020 (2020-05-22), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051889360
CHINA TELECOM: "Discussion on PDCP Status Report indication over E1", 3GPP DRAFT; R3-203134, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG3, no. Online; 20200601 - 20200612, R3-203134, 22 May 2020 (2020-05-22), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051889078
See also references of EP 4079042A4
INTEL CORPORATION, ZTE, GOOGLE, CATT, HUAWEI, SAMSUNG, NEC, LGE: "Early Forwarding support for DAPS/CHO over E1", 3GPP DRAFT; R3-203776, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG3, no. Electronic Meeting; 20200601 - 20200611, 22 May 2020 (2020-05-22), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051889472
SAMSUNG: "Support direct data forwarding for inter-system handover", 3GPP DRAFT; R3-203624, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG3, no. 20200601 - 20200611, 22 May 2020 (2020-05-22), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051889360
CHINA TELECOM: "Discussion on PDCP Status Report indication over E1", 3GPP DRAFT; R3-203134, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG3, no. Online; 20200601 - 20200612, R3-203134, 22 May 2020 (2020-05-22), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051889078
See also references of EP 4079042A4
Attorney, Agent or Firm:
YOON & LEE INTERNATIONAL PATENT & LAW FIRM (KR)
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