APPARATUS AND METHOD FOR PROVIDING INTERWORKING OF NETWORK SLICES SUBJECT TO NSSAA IN WIRELESS COMMUNICATION SYSTEM

• Main Authors: LEE, Hoyeon, JEONG, Sangsoo
• Format: Patent
• Language: English; French; German
• Published: 21.02.2024
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; WIRELESS COMMUNICATIONS NETWORKS

A method performed by a control entity in a wireless communication system is provided. The method includesreceiving a create session request message from a serving gateway, S-GW;transmitting, to a storage entity, a request message for subscriber information including a data type of requested subscribed information and key information via which the data type of the subscribed information is accessible, wherein the key information is a Subscription Permanent Identifier, SUPI;receiving, from the storage entity, subscription data of the terminal corresponding to the SUPI, wherein the subscription data include one or more subscribed Single-Network Slice Selection Assistance Information, S-NSSAIs;selecting, from the one or more S-NSSAIs, a S-NSSAI that the S-NSSAI is supportable by the control entity, wherein the S-NSSAI is selected based on the additional criterion of not being subject to network slice-specific authentication and authorization, NSSAA; andtransmitting a create session response message including the selected S-NSAAI a protocol configuration option, PCO, to the S-GW,wherein the control entity is a combo node of a session management function, SMF, and a PDN gateway control, PGW-C, and the storage entity is a combo node of a home subscriber server, HSS, and a unified data management, UDM.