A disclosure of the present specification provides a method performed by a network node that manages mobility in a first public land mobile network (PLMN). The network node may receive an access request message of a terminal from a base station in the first PLMN. The terminal may be a terminal having joined a second PLMN. On the basis of occurrence of a failure in the second PLMN, the network node may determine whether to allow the terminal to roam to the first PLMN.

A method for providing data relating to at least one user device to a data analysis entity. The method includes: collecting, for a plurality of events having impacted on at least one state of the user device in the network, data relating to the at least one impacted state; and supplying, to the data analysis entity, for at least one such state of the user device, at least one statistic obtained for this state by aggregating data relating to this state collected during the collecting step and a part of the data corresponding to an integer X greater than or equal to 1 of events among the most recent events of the plurality of events.

A computer-implemented method for improving roaming configuration efficiency. The method includes receiving roaming configuration data for a first roaming partner network operator and roaming configuration data for a second roaming partner network operator. The method includes applying the roaming configuration data for the first roaming partner network operator to a first set of network entity data associated with the first roaming partner network operator and applying the roaming configuration data for the second roaming partner network operator to a second set of network entity data associated with the second roaming partner network operator. The method includes providing the roaming configuration data for the first and second roaming partner network operators.

A computer-implemented method for improving roaming configuration efficiency. The method includes receiving roaming configuration data for a first roaming partner network operator and roaming configuration data for a second roaming partner network operator. The method includes applying the roaming configuration data for the first roaming partner network operator to a first set of network entity data associated with the first roaming partner network operator and applying the roaming configuration data for the second roaming partner network operator to a second set of network entity data associated with the second roaming partner network operator. The method includes providing the roaming configuration data for the first and second roaming partner network operators.

Provided are a method for managing a prohibited PLMN list during disaster roaming, and an apparatus supporting same. User Equipment (UE) determines, when there is no available public land mobile network (PLMN) other than PLMNs included in a first list, whether the PLMNs included in the first list can provide a disaster roaming service, and includes in a second list at least one PLMN that can provide the disaster roaming service, from among the PLMNs included in the first list. On the basis that a disaster condition is applied to a home PLMN (HPLMN), the UE i) performs PLMN selection for the at least one PLMN included in the second list, and ii) selects a disaster roaming PLMN from among the at least one PLMN and receives the disaster roaming service provided from the disaster roaming PLMN.

Provided are a method for managing a prohibited PLMN list during disaster roaming, and an apparatus supporting same. User Equipment (UE) determines, when there is no available public land mobile network (PLMN) other than PLMNs included in a first list, whether the PLMNs included in the first list can provide a disaster roaming service, and includes in a second list at least one PLMN that can provide the disaster roaming service, from among the PLMNs included in the first list. On the basis that a disaster condition is applied to a home PLMN (HPLMN), the UE i) performs PLMN selection for the at least one PLMN included in the second list, and ii) selects a disaster roaming PLMN from among the at least one PLMN and receives the disaster roaming service provided from the disaster roaming PLMN.

Provided are a method for user interface (UI)/user experience (UX) display for supporting service continuity when a disaster situation ends, and a device supporting same. A user equipment (UE) receives, from a disaster roaming PLMN, a configuration update command message including first information indicating that a disaster condition of a home PLMN (HPLMN) has ended, and displays second information relating to whether to maintain a service that is being received from the disaster roaming PLMN, on the basis of the first information and the fact that the disaster condition of the HPLMN has ended. The UE also waits until the service that is being received from the disaster roaming PLMN ends, and performs, after the service that is being received from the disaster roaming PLMN ends, a procedure of deregistration from the disaster roaming PLMN on the basis of the first information.

Provided are a method for user interface (UI)/user experience (UX) display for supporting service continuity when a disaster situation ends, and a device supporting same. A user equipment (UE) receives, from a disaster roaming PLMN, a configuration update command message including first information indicating that a disaster condition of a home PLMN (HPLMN) has ended, and displays second information relating to whether to maintain a service that is being received from the disaster roaming PLMN, on the basis of the first information and the fact that the disaster condition of the HPLMN has ended. The UE also waits until the service that is being received from the disaster roaming PLMN ends, and performs, after the service that is being received from the disaster roaming PLMN ends, a procedure of deregistration from the disaster roaming PLMN on the basis of the first information.

First identification information is information indicating a mobility type supported by a core network, and second identification information is information indicating a mobility type allowed by the core network. A communication control method for a terminal apparatus of the present invention includes a step of receiving an attach accept message from the core network via a base station apparatus, the attach accept message including at least the first identification information and/or the second identification information. Accordingly, there is provided a communication procedure that is suited to the determination of a mobility type of a terminal.

First identification information is information indicating a mobility type supported by a core network, and second identification information is information indicating a mobility type allowed by the core network. A communication control method for a terminal apparatus of the present invention includes a step of receiving an attach accept message from the core network via a base station apparatus, the attach accept message including at least the first identification information and/or the second identification information. Accordingly, there is provided a communication procedure that is suited to the determination of a mobility type of a terminal.