Title:
METHOD AND APPARATUS FOR WIRELESS COMMUNICATION APPARATUS, STORAGE MEDIUM, AND CHIP SYSTEM
Document Type and Number:
WIPO Patent Application WO/2022/104751
Kind Code:
A1
Abstract:
Disclosed in the present application are a method and apparatus for a wireless communication apparatus, a storage medium, and a chip system, for use in enabling a wireless communication apparatus to fall back from a 5G system to a 2G or 3G communication system to complete a service, and then return to the 5G system. The method comprises: a wireless communication apparatus initiating a voice service in a first cell of a 5G communication system; performing the voice service on a second cell of a 2G or 3G communication system; sending a first message on the second cell, the first message being used for indicating the end of the voice service; receiving a second message on the second cell, the second message being used for instructing the wireless communication apparatus to redirect to a third cell of a 4G communication system; and after receiving the second message, searching for a cell of the 5G communication system before attempting to access the third cell, and when a suitable 5G cell is found, attempting to access the 5G cell. In this way, a terminal device can return to a first communication system more quickly.
Inventors:
WEN LUTAO (CN)
LUO XIAOFENG (CN)
LUO XIAOFENG (CN)
Application Number:
PCT/CN2020/130659
Publication Date:
May 27, 2022
Filing Date:
November 20, 2020
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04W36/14; H04W36/00
Foreign References:
| CN105282799A | 2016-01-27 | |||
| CN102404815A | 2012-04-04 | |||
| CN107231667A | 2017-10-03 | |||
| CN108064463A | 2018-05-22 | |||
| US20140349662A1 | 2014-11-27 |
Other References:
RAN6: "Reply LS on Return from UTRAN to NG-RAN for SRVCC from 5GS to UTRAN", 3GPP DRAFT; R2-1813542_R6-180157, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Chengdu, China; 20181008 - 20181012, 29 September 2018 (2018-09-29), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051523045
RAN6: "LS on additional information related to return from UTRAN to NG-RAN for SRVCC from 5GS to UTRAN", 3GPP DRAFT; R2-1813544_R6-180164, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Chengdu, China; 20181008 - 20181012, 29 September 2018 (2018-09-29), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051523047
INTEL CORPORATION (RAPPORTEUR): "Email discussion report on [101#33][LTE/5GC] Inactive (Intel)", 3GPP DRAFT; R2-1805007_EMAILDISC-33_REPORT_V01_SUMMARY V02, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Sanya, China; 20180416 - 20180420, 14 April 2018 (2018-04-14), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051428699
RAN6: "LS on additional information related to return from UTRAN to NG-RAN for SRVCC from 5GS to UTRAN", 3GPP DRAFT; R2-1813544_R6-180164, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Chengdu, China; 20181008 - 20181012, 29 September 2018 (2018-09-29), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051523047
INTEL CORPORATION (RAPPORTEUR): "Email discussion report on [101#33][LTE/5GC] Inactive (Intel)", 3GPP DRAFT; R2-1805007_EMAILDISC-33_REPORT_V01_SUMMARY V02, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Sanya, China; 20180416 - 20180420, 14 April 2018 (2018-04-14), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051428699
Attorney, Agent or Firm:
TDIP & PARTNERS (CN)
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