De-registration method in wireless communication system and device therefor

    公开(公告)号:US10687300B2

    公开(公告)日:2020-06-16

    申请号:US16065075

    申请日:2017-11-22

    Abstract: An aspect of the present invention relates to a UE-initiated de-registration method by an AMF in a wireless communication system, and comprises the steps of: receiving, from UE, a de-registration request message that requests de-registration, wherein the de-registration request message includes de-registration type information and first access type information indicating a target access to which the de-registration is to be applied; requesting, when the UE has an established protocol data unit (PDU) session through the target access, an SMF to release the established PDU session; and transmitting a de-registration accept message to the UE depending on the de-registration type.

    Method for setting configuration of non-IP data delivery (NDID) in wireless communication system and device for same

    公开(公告)号:US10652085B2

    公开(公告)日:2020-05-12

    申请号:US16068598

    申请日:2017-01-09

    Abstract: One aspect of the present invention relates to a method for setting, by an SCEF, and NIDD configuration in a wireless communication system, the method including: a step for receiving, from a network node, a first SCEF connection setup request for non-IP data transmission by a terminal, the first SCEF connection setup request including an external identifier of the terminal and a SCS/AS identifier of an SEC/AS for servicing the terminal; a step of determining whether the NIDD configuration with SCS/AS is established; a step for transmitting, to the SCS/AS, a second SCEF connection setup request for establishing the NIDD configuration, when the NIDD configuration is not established, the second SCEF connection setup request including the external identifier of the terminal; and a step for setting the NIDD configuration for the SCS/AS and the terminal.

    Method for group message transmission in wireless communication system and apparatus therefor

    公开(公告)号:US10595188B2

    公开(公告)日:2020-03-17

    申请号:US15741110

    申请日:2016-06-30

    Abstract: A method for transmitting, by a first mobility management entity (MME), a group message in group units, to which a plurality of terminals belong, in a wireless communication system according to one embodiment of the present invention may comprise the steps of: receiving a group message request message requesting for transmission of the group message, wherein the group message request message includes a group identifier (ID) of a group to receive the group message, delivery contents to be transmitted to the group, and validity time which buffers the delivery contents; detecting a first terminal connected to the first MME within the validity time; confirming whether the group ID of the detected first terminal is identical to the group ID of the group message request message; and, if the two group IDs are identical, transmitting the delivery contents to the first terminal.

    Data transmission method and user equipment, and data reception method and base station

    公开(公告)号:US10575318B2

    公开(公告)日:2020-02-25

    申请号:US16077292

    申请日:2017-02-10

    Abstract: User equipment may send a channel allocation request (hereinafter referred to as a first channel allocation request) to a network for transmission of data. When the transmission of data has backed off, the user equipment may send a channel allocation request (hereinafter referred to as a second channel allocation request) again for the transmission of data. At this time, the second channel allocation request may be transmitted to the network together with a priority raise request if a remaining timeframe Tremain of an upper timeframe T is smaller than a certain guard time.

    METHOD FOR CONTROLLING CONGESTION WHEN CONGESTION OCCURS IN NETWORK

    公开(公告)号:US20190357118A1

    公开(公告)日:2019-11-21

    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.

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