Session management method and SMF node

    公开(公告)号:US11576043B2

    公开(公告)日:2023-02-07

    申请号:US16496396

    申请日:2017-12-26

    Abstract: One disclosure in the present specification provides a session management method performed by a session management function (SMF) node. The session management method may comprise: a step of transmitting, to a user plane function (UPF) node, a request message for discarding traffic buffering, when a notification of the detection of particular traffic associated with a wireless device has been received, and if additional authentication is required for the particular traffic; and a step of transmitting a message for triggering the wireless device to establish a new packet data unit (PDU) session, to an access and mobility management function (AMF) node.

    METHOD FOR ACCESSING ANOTHER PLMN TO DEAL WITH NETWORK FAILURE

    公开(公告)号:US20220217522A1

    公开(公告)日:2022-07-07

    申请号:US17600505

    申请日:2019-09-25

    Abstract: A disclosure of the present specification provides a method for accessing another Public Land Mobile Network (PLMN) instead of a subscribed third PLMN. According to the method, a terminal may access a second PLMN, which provides a service, instead of a first PLMN that is roaming-agreed with the third PLMN. In addition, according to the method, the terminal may display, on a screen, information indicating that access is made to the second PLMN. The second PLMN may provide only a limited service.

    Method for managing session, and SMF node for performing method

    公开(公告)号:US11172459B2

    公开(公告)日:2021-11-09

    申请号:US16619380

    申请日:2017-10-30

    Abstract: Provided is a method for managing a local area data network (LADN) session, as well as a session management function (SMF) node that is capable of performing this method. The method involves determining whether to release or deactivate the LADN session of a terminal based on information received by the SMF from an access and mobility management function (AMF) node. The information includes location information relating to the terminal and information as to whether the terminal is de-registered from a 3GPP access network. If the terminal is instead connected via a non-3GPP access network, the method helps avoid terminal location inaccuracies typically associated with non-3GPP access networks.

    Method for managing session
    239.
    发明授权

    公开(公告)号:US11096053B2

    公开(公告)日:2021-08-17

    申请号:US16348075

    申请日:2017-11-07

    Abstract: A disclosure of the present specification provides a method for processing a NAS request message by an MMF node. The method may comprise the steps of: when it is identified that an NAS request message has been received through a second access network, checking whether a first MM context and a first security context are included therein; and acquiring a second security context from an authentication CP node, and generating a second MM context.

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