Method for performing communication related to packet switch (PS) data off

    公开(公告)号:US12302437B2

    公开(公告)日:2025-05-13

    申请号:US18370269

    申请日:2023-09-19

    Abstract: A method performed by a terminal operating in a wireless communication system. Based on that the terminal is located in a non-allowed area, and based on the terminal having a pending uplink signaling to inform a change in a Packet Switch (PS) data off status of the terminal, the terminal transmits a service request message to a network node. The service request message includes service type information that is related to the change in the PS data off status of the terminal. The terminal then receives, from the network node, a response message to the service request message.

    Method for adjusting timer T when disaster roaming occurs, and device supporting same

    公开(公告)号:US12219654B2

    公开(公告)日:2025-02-04

    申请号:US18227442

    申请日:2023-07-28

    Abstract: Provided are a method for adjusting timer T when disaster roaming occurs, and a device supporting same. When a disaster condition is applied to a home public land mobile network (HPLMN), a user equipment (UE) performs registration with a disaster roaming PLMN. When the registration with the disaster roaming PLMN is performed, a timer for periodically searching for the HPLMN does not operate, and the HPLMN is not searched while the timer does not operate. In addition, the UE re-operates the timer on the basis of the disaster condition no longer being applied to the HPLMN or the UE leaving a disaster area.

    Method for managing network failures

    公开(公告)号:US12170929B2

    公开(公告)日:2024-12-17

    申请号:US17603735

    申请日:2020-01-07

    Abstract: A disclosure according to the present specification provides a method of having an access by a terminal subscribing to a first public land mobile network (PLMN). The method may comprise a step of transmitting a first request message to a network node via a base station. The base station may be a base station of a second PLMN that broadcasts system information including information about the first PLMN. The method may comprise a step of receiving, from the network node, a first response message that is a response to the first request message. The first response message may include information indicating that there is a service failure in the first PLMN. The method may comprise a step of transmitting a second request message to the second PLMN or reselecting another PLMN instead of the first PLMN, which has a service failure, on the basis of the first response message including the information.

    Terminal performing registration in non-3GPP access and method performed by same

    公开(公告)号:US11638232B2

    公开(公告)日:2023-04-25

    申请号:US17943937

    申请日:2022-09-13

    Abstract: One disclosure of the present specification provides a method performed by a terminal that performs registration in a non-3rd generation partnership project (3GPP) access. According to the method, the terminal may receive a rejection message including a value of a back-off timer. In addition, the terminal may determine a value of a non-3GPP de-registration timer on the basis of the value of the back-off timer. In this case, the value of the non-3GPP de-registration timer may be determined to be greater than the value of the back-off timer.

    METHOD FOR ACCESSING ANOTHER PLMN TO DEAL WITH NETWORK FAILURE

    公开(公告)号:US20220217522A1

    公开(公告)日:2022-07-07

    申请号:US17600505

    申请日:2019-09-25

    Abstract: A disclosure of the present specification provides a method for accessing another Public Land Mobile Network (PLMN) instead of a subscribed third PLMN. According to the method, a terminal may access a second PLMN, which provides a service, instead of a first PLMN that is roaming-agreed with the third PLMN. In addition, according to the method, the terminal may display, on a screen, information indicating that access is made to the second PLMN. The second PLMN may provide only a limited service.

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