METHOD FOR ATTEMPTING NETWORK ACCESS FROM NB-IOT RAT

    公开(公告)号:US20190141609A1

    公开(公告)日:2019-05-09

    申请号:US16088561

    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; and an NAS layer in the wireless device determining whether to initiate an NAS signaling process even when a backoff timer is running, wherein the backoff timer may be running due to previously having received a rejection message, and wherein when the wireless device uses an NB-IoT RAT and when the NAS signaling process is for transmitting exception data, it may be determined to initiate the NAS signaling process even though the backoff timer is running. The method may further comprise a step of the NAS layer in the wireless device setting an RRC establishment cause of an RRC connection request message as mobile originating (MO) exception data.

    METHOD AND APPARATUS FOR PERFORMING RRC CONNECTION RESUME IN WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20190045572A1

    公开(公告)日:2019-02-07

    申请号:US16075112

    申请日:2017-02-06

    Abstract: Disclosed is a method for effectively performing a non-access stratum (NAS) rejection when performing RRC connection resume in a wireless communication system. A method for performing, by a base station, radio resource control (RRC) connection resume in a wireless communication system, includes performing an RRC connection resume procedure with a user equipment (UE), transmitting a resume request message to a mobile management entity (MME), and receiving a resume failure message including an NAS rejection cause from the MME when the resume request has not been permitted.

    METHOD FOR CHANGING CONNECTION MODE AND MOBILITY MANAGEMENT ENTITY

    公开(公告)号:US20190021130A1

    公开(公告)日:2019-01-17

    申请号:US16069053

    申请日:2017-01-20

    Abstract: When the amount of downlink (DL) data for a user equipment (UE), buffered by a network, exceeds a predetermined reference value, the network establishes a user plane connection with the UE by changing a connection mode with the UE. Even when a control plane connection that can be used for user data transmission exists and access to the UE is possible, the network does not transmit the DL data to the UE on the control plane connection, but transfers the DL data to the UE after the user plane connection is established.

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