Method whereby terminal selects PLMN in wireless communication system, and device for same

    公开(公告)号:US10772038B2

    公开(公告)日:2020-09-08

    申请号:US16570650

    申请日:2019-09-13

    Abstract: A method for a User Equipment (UE) in a wireless communication system, the includes transmitting, by the UE which is outside of coverage, a first message for registration to a first cell on a selected first Public Land Mobile Network (PLMN), wherein the first PLMN which is not included in a list related to forbidden PLMNs; receiving, by the UE, a second message related to registration failure with the first PLMN; selecting, by the UE, a second PLMN; and transmitting, by the UE, a third message for registration to a second cell on the selected second PLMN, wherein zero or more PLMNs, which are included in the list related to forbidden PLMNs, are excluded in a selection of the second PLMN, and wherein the first PLMN with which the registration has failed is further excluded in the selection of the second PLMN, although the first PLMN is not included in the list related to forbidden PLMNs.

    Method and wireless device for transmitting RRC message when using CP CIOT EPS optimization

    公开(公告)号:US10764937B2

    公开(公告)日:2020-09-01

    申请号:US16092951

    申请日:2017-01-09

    Abstract: Provided is a method for a wireless device for transmitting an RRC message according to one disclosure of the present specification. The method may comprise a step for an NAS stratum of the wireless device transmitting an NAS signaling request message to an AS layer to transmit the former to a network node. The NAS signaling request message can comprise therein an indication of one or both preferred or required plans from among the plans for optimizing the EPS for CIoT using a control plane (CP) or a user plane (UP). The method may comprise a step for the NAS stratum of the wireless device receiving, from the AS stratum, an NAS signaling acceptance message or NAS signaling rejection message from the network node.

    Method of supporting access network handover operation of user equipment in wireless communication system and apparatus for the same

    公开(公告)号:US10419985B2

    公开(公告)日:2019-09-17

    申请号:US15445449

    申请日:2017-02-28

    Abstract: Provided method includes receiving, from the source AN, a handover request requesting a handover of an AN of the user equipment, wherein the user equipment is configured with a per node level tunnel for connection to a target user plane function node, and wherein the per node level tunnel is a common connection tunnel which is generated in the node unit for all traffics between the target AN and the target user plane function node, determining whether a service provision through the per node level tunnel is possible, determining whether generation of a new per node level tunnel for the user equipment is necessary when it is determined that service provision is impossible, and generating the new per node level tunnel for the user equipment based on a result of the determination or changing the tunnel model of the user equipment to a different tunnel model.

    Method for recovering IPV6 fault in mobile communication network and PCRF

    公开(公告)号:US10291579B2

    公开(公告)日:2019-05-14

    申请号:US15212678

    申请日:2016-07-18

    Abstract: There is provided a method for a network fault recovery. The method may be performed by a policy and charging rule function (PCRF) node and comprise: transmitting, to a traffic detection function (TDF), a first request for monitoring a session initiation protocol (SIP) based signal to be routed over a first internet protocol (IP) version based network, if a fault of the first IP version-based network is detected; receiving, from the TDF, a report indicating that the SIP based signal is detected; transmitting a first indication for initiating a IP connectivity access network (IP-CAN) session termination procedure to a packet data network gateway (P-GW). Here, the first indication may include a cause value indicating a reactivation is requested such that the P-GW enables a user equipment (UE) to perform a detach procedure and then a reattach procedure.

    SERVING NODE RELOCATING METHOD IN WIRELESS COMMUNICATION SYSTEM AND DEVICE FOR SAME

    公开(公告)号:US20180324652A1

    公开(公告)日:2018-11-08

    申请号:US15773441

    申请日:2016-11-04

    CPC classification number: H04W36/0033 H04W8/04 H04W8/08 H04W36/00 H04W36/08

    Abstract: Disclosed are a serving node relocating method in a wireless communication system and a device for same. In detail, a method for relocating, by a first serving node, a serving node in a wireless communication system can include: receiving a tracking area update (TAU) request message from a terminal; transmitting an update location request to a home subscriber server (HSS), when the first serving node having received the TAU request message is different from a second serving node that is an old node; and transmitting an update location message to a service capability exposure function (SCEF), when the first serving node is different from the second serving node that is the old node and a connection for transmitting/receiving non-internet protocol (non-IP) data via the SCEF is configured in the terminal.

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