Title:
METHOD AND APPARATUS FOR PERFORMING HANDOVER IN WIRELESS COMMUNICATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/066466
Kind Code:
A1
Abstract:
A user equipment (UE) and method thereof are provided for use in a wireless communication system. The method includes receiving, from a source cell, a radio resource control (RRC) reconfiguration message; configuring a medium access control (MAC) entity for a target cell in response to the RRC reconfiguration message configuring a bearer to a dual active protocol stack (DAPS) handover; performing, by the MAC entity, a random access procedure on the target cell for the DAPS handover; transmitting, from the MAC entity, to an upper layer, an indication of completion of the random access procedure, in response to completing the random access procedure to the target cell; and switching, by a packet data convergence protocol (PDCP) entity, uplink data for the bearer, in response to receiving a request for uplink data switching from the upper layer based on the indication.
Inventors:
KIM DONGGUN (KR)
KIM SOENGHUN (KR)
KIM SOENGHUN (KR)
Application Number:
PCT/KR2020/013238
Publication Date:
April 08, 2021
Filing Date:
September 28, 2020
Export Citation:
Assignee:
SAMSUNG ELECTRONICS CO LTD (KR)
International Classes:
H04W36/00; H04W36/02; H04W36/08; H04W74/08
Foreign References:
| US20090017826A1 | 2009-01-15 | |||
| US20190253945A1 | 2019-08-15 |
Other References:
NOKIA, NOKIA SHANGHAI BELL: "Analysis of DAPS Operation", 3GPP DRAFT; R2-1909036 ANALYSIS OF DAPS OPERATION_V1, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Prague, Czech Republic; 20190826 - 20190830, 15 August 2019 (2019-08-15), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP051766846
ZTE CORPORATION, SANECHIPS: "Discussion on PDCP aspects for RUDI", 3GPP DRAFT; R2-1910758 DISCUSSION ON THE PDCP ASPECTS FOR RUDI, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Prague, Czech Republic; 20190826 - 20190830, 16 August 2019 (2019-08-16), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP051768526
MEDIATEK INC., QUALCOMM INCORPORATED, INTEL CORPORATION, CHARTER COMMUNICATIONS, VIVO, OPPO, APPLE, NEC: "UL Handling with DAPS during RUDI Handover", 3GPP DRAFT; R2-1909178, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Prague, Czech Republic; 20190826 - 20190830, 16 August 2019 (2019-08-16), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP051766985
CATT: "PDCP Aspects of DAPS-LTE", 3GPP DRAFT; R2-1908920, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Prague, Czech Republic; 20190826 - 20190830, 16 August 2019 (2019-08-16), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP051766738
See also references of EP 3987849A4
ZTE CORPORATION, SANECHIPS: "Discussion on PDCP aspects for RUDI", 3GPP DRAFT; R2-1910758 DISCUSSION ON THE PDCP ASPECTS FOR RUDI, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Prague, Czech Republic; 20190826 - 20190830, 16 August 2019 (2019-08-16), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP051768526
MEDIATEK INC., QUALCOMM INCORPORATED, INTEL CORPORATION, CHARTER COMMUNICATIONS, VIVO, OPPO, APPLE, NEC: "UL Handling with DAPS during RUDI Handover", 3GPP DRAFT; R2-1909178, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Prague, Czech Republic; 20190826 - 20190830, 16 August 2019 (2019-08-16), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP051766985
CATT: "PDCP Aspects of DAPS-LTE", 3GPP DRAFT; R2-1908920, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Prague, Czech Republic; 20190826 - 20190830, 16 August 2019 (2019-08-16), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP051766738
See also references of EP 3987849A4
Attorney, Agent or Firm:
Y.P.LEE,MOCK & PARTNERS (KR)
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