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 attempting network access from NB-IoT RAT

    公开(公告)号:US11044776B2

    公开(公告)日:2021-06-22

    申请号:US16088798

    申请日:2016-11-09

    Abstract: Provided in one disclosure of the present specification is a method for a wireless device attempting network access. The method may comprise the steps of: an RRC layer of the wireless device receiving, from a cell, a first piece of information relating to an NB-IoT RAT; the RRC layer receiving, from the cell, a second piece of information indicating whether to block access to exception data; the RRC layer obtaining, from an upper layer, an RRC establishment cause set as outgoing exception data, when an NAS signaling process is initiated to transmit the exception data; and performing an access block inspection.

    Method for controlling congestion when congestion occurs in network

    公开(公告)号:US10999779B2

    公开(公告)日:2021-05-04

    申请号:US16477292

    申请日:2018-01-15

    Abstract: One disclosure of the present specification provides a method for performing congestion control when session management congestion occurs in a network system. The method comprises the steps of: transmitting, to an access and mobility function (AMF) node, a request message requesting access to the network system; and receiving a refusal message rejecting the access request from the AMF node when the session management congestion occurs, wherein upon receiving the refusal message, the request message may not be transmitted again for a predetermined period of time.

    METHOD AND USER EQUIPMENT FOR PERFORMING ACCESS CONTROL IN 5GS

    公开(公告)号:US20210029628A1

    公开(公告)日:2021-01-28

    申请号:US17041188

    申请日:2019-02-07

    Abstract: Disclosed in the present specification is a method by which a user equipment (UE) performs access control. The method can comprise the steps of: transmitting a protocol data unit (PDU) session establishment or modification request message; and receiving a PDU session establishment or modification rejection message. The rejection message can comprise information on a backoff timer and session network slice selection assistance information (S-NSSAI). The method can comprise the steps of: driving the backoff timer while being linked with the S-NSSAI; and performing access control on the basis of the S-NSSAI.

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