METHOD AND APPARATUS FOR P-CSCF RESTORATION

WIPO Patent Application WO/2023/130999

A1

Embodiments of the present disclosure provide method and apparatus for P-CSCF restoration. A method performed by a session management node comprises receiving a message from a data management node or a policy control node or a first access and mobility node. The message indicates proxy call session control function (P-CSCF) restoration and information of a failed P-CSCF. The method further comprises, for a protocol data unit (PDU) session, based on the received message, triggering a P-CSCF restoration procedure by sending a PDU session release command or a PDU session modification command to a user equipment via the first or a second access and mobility node. The PDU session modification command comprises an updated P-CSCF list based on the information of the failed P-CSCF.

WO/2023/085989	TELEPHONY APPLICATION SERVER NODE, SERVER NODE, AND METHODS THEREIN, IN A COMMUNICATIONS NETWORK
WO/2023/177341	METHODS, AND NETWORK NODES FOR HANDLING COMMUNICATION IN A COMMUNICATION NETWORK
WO/2023/072801	METHODS AND APPARATUSES FOR NETWORK FUNCTION DISCOVERY

HE YINGJIAO (CN)
RODRIGUEZ JESUS ANGEL DE GREGORIO (ES)
AZORERO FUENCISLA GARCIA (ES)
ZHAN DEQIN (CN)
LI BIN (CN)
ZHU JINYIN (CN)
LI BEIBEI (CN)

PCT/CN2022/142309

July 13, 2023

December 27, 2022

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ERICSSON TELEFON AB L M (SE)
HE YINGJIAO (CN)

H04L65/1016; H04L41/0668; H04L65/1045; H04L65/1066; H04L69/40

US20210266349A1	2021-08-26
US20200344273A1	2020-10-29

"3rd Generation Partnership Project; Technical Specification Group Core Network and Terminals; IMS Restoration Procedures (Release 17)", vol. CT WG4, no. V17.0.0, 16 December 2021 (2021-12-16), pages 1 - 57, XP052083121, Retrieved from the Internet [retrieved on 20211216]
"3rd Generation Partnership Project; Technical Specification Group Core Network and Terminals; User data interworking, coexistence and migration; Stage 2; (Release 17)", no. V17.0.0, 29 June 2021 (2021-06-29), pages 1 - 52, XP052029868, Retrieved from the Internet [retrieved on 20210629]
ERICSSON: "P-CSCF restoration", vol. CT WG4, no. E-Meeting; 20220117 - 20220121, 20 January 2022 (2022-01-20), XP052101962, Retrieved from the Internet [retrieved on 20220120]
"3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; Procedures for the 5G System (5GS); Stage 2 (Release 17)", vol. SA WG2, no. V17.1.0, 24 June 2021 (2021-06-24), pages 1 - 692, XP052029603, Retrieved from the Internet [retrieved on 20210624]
"3rd Generation Partnership Project; Technical Specification Group Core Network and Terminals; 5G System; Unified Data Management Services; Stage 3 (Release 17)", vol. CT WG4, no. V17.5.0, 17 December 2021 (2021-12-17), pages 1 - 466, XP052083162, Retrieved from the Internet [retrieved on 20211217]
3GPP TS 23.380
3GPP TS 24.008
3GPP TS 29.214
3GPP TS 23.501
3GPP TS 29.503
3GPP TS 23.632
3GPP TS 23.503
3GPP TS 29.512
3GPP TS 23.228
3GPP TS 23.502

ZHONGZI LAW OFFICE (CN)

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