Method and apparatus for controlling wireless access congestion

    公开(公告)号:US10104574B2

    公开(公告)日:2018-10-16

    申请号:US14912570

    申请日:2014-09-22

    Abstract: The present invention relates to a wireless communication system and, more specifically, to a method and an apparatus for controlling wireless access congestion. A method by which a target cell supports a handover in a wireless communication system, according to one embodiment of the present invention, comprises: a step for receiving, from a source cell by the target cell, congestion control information for a terminal handed over from the source cell to the target cell; and a step for congestion controlling, by the target cell, the terminal on the basis of the congestion control information. The congestion control information includes whether a drop in service priority for the terminal occurs in the source cell.

    Method of processing establishment of MA PDU session, and AMF node and SMF node

    公开(公告)号:US11528763B2

    公开(公告)日:2022-12-13

    申请号:US16967688

    申请日:2019-02-11

    Abstract: A disclosure of the present specification provides a method for processing establishment of a protocol data unit (PDU) session by an access and mobility management function (AMF) node. The method may include a step of receiving a PDU session establishment request message from a user equipment (UE) via either a first access or a second access. The PDU session establishment request message may include information indicative of a multi access (MA) PDU session. The method may include a step of selecting a session management function (SMF) node supporting the MA PDU session on the basis of the information indicative of the MA PDU session. The method may include a step of sending the PDU session establishment request message to the SMF node supporting the MA PDU session.

    Method, user equipment, and network node for performing PDU session establishment procedure for LADN

    公开(公告)号:US11470657B2

    公开(公告)日:2022-10-11

    申请号:US17040440

    申请日:2019-03-26

    Abstract: One disclosure of the present specification provides a method by which a user equipment (UE) performs a protocol data unit (PDU) session establishment procedure for a local area data network (LADN). The method comprises: when a pre-set condition related to an LADN policy is satisfied, transmitting a message requesting an access and mobility management function (AMF) for the LADN policy; receiving, from the AMF, the LADN policy provided by a policy control function (PCF), wherein the LADN policy comprises information about at least one application and information about a LADN data network name (DNN) related to the at least one application; determining a LADN DNN to be used by the UE, on the basis of the LADN policy; and transmitting a PDU session establishment request message related to the determined LADN DNN to the AMF.

    Overload control method in wireless communication system and device for same

    公开(公告)号:US11259208B2

    公开(公告)日:2022-02-22

    申请号:US16620455

    申请日:2018-06-08

    Abstract: Disclosed are an overload control method in a wireless communication system and a device for the same. Specifically, a method by which a base station performs an overload control in a wireless communication system can include: a step of receiving an overload start message from a core network; a step of receiving a first radio resource control (RRC) message including a non-access stratum (NAS) message from user equipment (UE); and a step of transmitting an RRC connection release message, for instructing the release of an RRC connection, to the UE when an instruction for instructing data transmission through a control plane in the first RRC message is included.

    Method for PDU session establishment procedure and AMF node

    公开(公告)号:US11109280B2

    公开(公告)日:2021-08-31

    申请号:US16535623

    申请日:2019-08-08

    Abstract: Provided is a method for handling a packet data unit (PDU) session establishment procedure. The method may performed by an access and mobility management function (AMF) node and comprise: determining whether to reject a PDU session establishment request. The determination may be performed if the PDU session establishment request includes an existing PDU session identifier. Based on the existing PDU session identifier, an identifier of a session management function (SMF) node may be acquired. The PDU session establishment request may be accepted, if it is determined based the identifier of the SMF node that the SMF node and the AMF node belong to a same PLMN. The PDU session establishment request may be further accepted, if it is determined based the identifier of the SMF node that the SMF node belongs to a HPLMN. The PDU session establishment request may be rejected, if it is determined based the identifier of the SMF node that the SMF node and the AMF node do not belong to the same PLMN or the SMF node does not belong to the HPLMN.

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