Title:
A METHOD AND APPARATUS FOR RESTORING PROXY-CALL SESSION CONTROL FUNCTION IN A WIRELESS COMMUNICATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2023/149731
Kind Code:
A1
Abstract:
The disclosure relates to a 5th generation (5G) or 6th generation (6G) communication system for supporting a higher data transmission rate. A method performed by a session management function (SMF) node in a wireless communication system is provided. The method includes receiving, from the user equipment (UE), a protocol data unit (PDU) session establishment request for establishing at least one PDU session between the UE and multiple internet protocol (IP) multimedia subsystem (IMS) networks, subscribing, with a unified data manager (UDM) node to receive a first notification for a proxy-call session control function (P-CSCF) restoration, by providing an identifier for each PDU session, receiving, from the UDM node, the first notification for the P-CSCF restoration based on a subscription with a UDM, and performing, the P-CSCF restoration for the PDU session of the UE based on the received first notification for the P-CSCF restoration.
Inventors:
NAYAK ASHOK KUMAR (IN)
Application Number:
PCT/KR2023/001541
Publication Date:
August 10, 2023
Filing Date:
February 02, 2023
Export Citation:
Assignee:
SAMSUNG ELECTRONICS CO LTD (KR)
International Classes:
H04L65/1095; H04L65/1016; H04L65/1069; H04L65/1073; H04W88/14
Domestic Patent References:
| WO2019154034A1 | 2019-08-15 | |||
| WO2021044271A1 | 2021-03-11 | |||
| WO2020228471A1 | 2020-11-19 |
Foreign References:
| US20200178336A1 | 2020-06-04 | |||
| US20210266349A1 | 2021-08-26 |
Attorney, Agent or Firm:
KWON, Hyuk-Rok et al. (KR)
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