METHOD AND APPARATUS FOR RESTORING PROXY-CALL SESSION CONTROL FUNCTION IN A WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20230247066A1

    公开(公告)日:2023-08-03

    申请号:US18163525

    申请日:2023-02-02

    CPC classification number: H04L65/1016 H04L65/1046 H04L65/1066

    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.

    METHOD AND AMF APPARATUS FOR NSAC OPERATION BASED ON UE'S ACTUAL USAGE

    公开(公告)号:US20220400461A1

    公开(公告)日:2022-12-15

    申请号:US17806433

    申请日:2022-06-10

    Abstract: The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Embodiments herein provide a method of an access and mobility management function (AMF). The method includes monitoring whether a user equipment (UE) registered to a network slice establishes a protocol data unit (PDU) session using the network slice for a time, determining that the UE does not establish the PDU session in the time based on an expiration of a timer and deregistering the UE for the network slice.

    METHOD AND APPARATUS FOR HANDLING A LADN SERVICE AREA IN A WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20250016669A1

    公开(公告)日:2025-01-09

    申请号:US18764763

    申请日:2024-07-05

    Abstract: The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. A method for handling a local area data network (LADN) service area in a wireless network is provided. The method performed by an access and mobility management function (AMF) entity in a wireless communication system includes receiving, from a user equipment (UE), capability information indicating that the UE supports a local area data network (LADN) per data network name (DNN) and single network slice selection assistance information (S-NSSAI), identifying an LADN service area for a DNN and an S-NSSAI, and transmitting, to the UE, information on the DNN, information on the S-NSSAI, and information on the LADN service area.

    METHOD AND SYSTEM FOR PERFORMING A NETWORK SLICE SPECIFIC AUTHENTICATION AUTHORIZATION PROCEDURE FOR A NETWORK SLICE

    公开(公告)号:US20240163665A1

    公开(公告)日:2024-05-16

    申请号:US18282430

    申请日:2022-03-17

    CPC classification number: H04W12/06 H04L63/0892 H04W12/088

    Abstract: A method for performing a Network Slice Specific Authentication Authorization (NSSAA) procedure for a network slice is disclosed. The method includes performing, by a Network Slice Specific Authentication and Authorization Function (NSSAAF), an NSSAA procedure through a first Access and Mobility Management Function (AMF) selected amongst the first AMF and a second AMF. The method includes determining, by the NSSAAF whether the NS SAA procedure through the first AMF is successful or not. The method includes performing by the NSSAAF, one of skipping the NSSAA procedure for the second AMF in response to determining that the NSSAA procedure is successful for the first AMF transmitting a message to the second AMF for deleting Network Slice Selection Assistance Information (NSSAI) related to the network slice from an allowed list of network slices in response to determining that the NSSAA procedure is unsuccessful for the first AMF.

    METHOD AND SYSTEM FOR MANAGING NETWORK SLICES IN A COMMUNICATION NETWORK

    公开(公告)号:US20230247480A1

    公开(公告)日:2023-08-03

    申请号:US18162094

    申请日:2023-01-31

    CPC classification number: H04W28/06 H04W76/10

    Abstract: The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Embodiments of present disclosure relates to methods and network system for managing network slice in communication network. Management entity of network system detects UEs having inactive sessions and releases the inactive sessions for UEs. Management entity transmits notification to UEs and to AMF entity of network system indicating release of inactive sessions. Management entity also transmits a request to AMF entity requesting deregistration of UEs having inactive sessions. Further, AMF entity identifies presence of any active sessions for UEs through other management entities for access type corresponding to UEs. AMF entity upon identifying absence of active sessions, deregisters network slice for UEs having inactive sessions. Thereafter, NSACF entity of network system updates parameters associated with network slice for managing network slice. Thus, the present disclosure aids in avoiding wastage of resources of the network slice.

    METHOD AND WIRELESS NETWORK FOR MANAGING AERIAL SUBSCRIPTIONS INFORMATION OF UAV

    公开(公告)号:US20230101453A1

    公开(公告)日:2023-03-30

    申请号:US17951755

    申请日:2022-09-23

    Abstract: Disclosed is a method related to a 5G or 6G communication system for supporting a higher data transmission rate. The method is for updating aerial subscription information to a UAV in a wireless network by an AMF device, including receiving a first registration request message comprising a CAA-level UAV identifier from the UAV for accessing a UAS service; determining whether an aerial subscription for the UAS service is allowed for the UAV by a UDM device; sending a registration reject message with an indication that the UAS service is not available to the UAV in response to determining that the aerial subscription for the UAS service is not allowed for the UAV; and registering the UAV for a standard service.

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