METHOD AND DEVICE FOR DISCOVERY OPERATION OF UE IN WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20170201934A1

    公开(公告)日:2017-07-13

    申请号:US15400828

    申请日:2017-01-06

    Abstract: A method and device for a discovery operation of User Equipment (UE) in a wireless communication system are provided. The method in which a network node supports a discovery operation of a UE includes: receiving, by a network node within a Home Public Land Mobile Network (HPLMN) of the UE, a Discovery Request message from the UE, wherein the Discovery Request message includes a candidate frequency list including an available plurality of carrier frequencies for announcing by the UE and an announcing PLMN ID including a PLMN Identifier (ID) of each of the carrier frequencies included in the candidate frequency list; and transmitting, by the network node within the HPLMN, a Discovery Response message to the UE, wherein the Discovery Response message includes carrier frequency information that indicates a carrier frequency selected for announcing by the UE among the carrier frequencies included in the candidate frequency list.

    METHOD FOR REGISTERING HOME ROUTED ROAMING USER EQUIPMENT WITH IMS NETWORK

    公开(公告)号:US20190028992A1

    公开(公告)日:2019-01-24

    申请号:US15755725

    申请日:2016-08-17

    Abstract: One disclosure of the present specification provides a method for a proxy-call session control function (P-CSCF) of a home public land mobile network (H-PLMN) to register a roaming user equipment with an IP multimedia subsystem (IMS) network. The method may comprise the steps of: receiving an identifier of a visited public land mobile network (V-PLMN) in which a user equipment is roaming, wherein the identifier of the V-PLMN is received in a state where packet data network (PDN) connection for the user equipment is established but the user equipment is not registered with the IMS network; receiving, from the user equipment, a REGISTER message for registration with the IMS network; adding the identifier of the V-PLMN to a header of the REGISTER message; and transmitting the REGISTER message to which the identifier of the V-PLMN is added to an Interrogating-CSCF (I-CSCF).

    METHOD OF SUPPORTING ACCESS NETWORK HANDOVER OPERATION OF USER EQUIPMENT IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS FOR THE SAME

    公开(公告)号:US20180115928A1

    公开(公告)日:2018-04-26

    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 PERFORMING LOCATION REGISTRATION BY REMOTE UE IN WIRELESS COMMUNICATION SYSTEM, AND APPARATUS THEREFOR

    公开(公告)号:US20190182789A1

    公开(公告)日:2019-06-13

    申请号:US16098427

    申请日:2017-05-02

    Abstract: One embodiment of the present invention relates to a method for performing location registration by a remote user equipment (UE) in a wireless communication system, the method comprising the steps of: transmitting a direct communication request message to a relay UE; receiving, from the relay UE, a direct communication response message including location registration period information and location registration performing time information, in response to the direct communication request message; and when the location registration performing time information expires, transmitting a first TAU request message to an MME, wherein the location registration period information is applied after the application of the location registration performing time information.

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