Presented herein are techniques to facilitate visited network selection by a user equipment (UE) based on slice considerations. In one example, a method may include requesting, by a UE that is roaming among a plurality of visited mobile networks, registration for a network connection associated with a slice type; obtaining, by the UE from home mobile network for the UE, a priority for each of the plurality of visited mobile networks and an indication of one or more slice types provided by each of the plurality of visited mobile networks; selecting, by the UE, a highest priority visited mobile network of the plurality of visited mobile networks that provides the slice type; and establishing, by the UE, the network connection with the highest priority visited mobile network of the plurality of visited mobile networks that provides the slice type.

A method, apparatus and computer program product may be provided for signaling-based remote provisioning and updating of protection policy information in a SEPP of a visited network. A method may include obtaining, at a home network node (hSEPP), protection policy information from a local repository in a home network or via configuration. The hSEPP is a network node at a boundary of the home netowork, and the home network is a public land mobile network (hPLMN). The method includes distributing, via a signaling interface, the protection policy information to a visited network node (vSEPP) within a visited network (vPLMN). The vSEPP is a network node at a boundary of a second network. The protection policy information includes information regarding protection of signaling messages addressed for network functions (NFs) hosted in the hPLMN and is configured for enabling the vSEPP to selectively protect outgoing messages to hSEPP in the home network.

A method, apparatus and computer program product may be provided for signaling-based remote provisioning and updating of protection policy information in a SEPP of a visited network. A method may include obtaining, at a home network node (hSEPP), protection policy information from a local repository in a home network or via configuration. The hSEPP is a network node at a boundary of the home netowork, and the home network is a public land mobile network (hPLMN). The method includes distributing, via a signaling interface, the protection policy information to a visited network node (vSEPP) within a visited network (vPLMN). The vSEPP is a network node at a boundary of a second network. The protection policy information includes information regarding protection of signaling messages addressed for network functions (NFs) hosted in the hPLMN and is configured for enabling the vSEPP to selectively protect outgoing messages to hSEPP in the home network.

Provided are a method for acquiring location information and an apparatus for acquiring location information, a device and a storage medium. The method includes: receiving answer data sent by a home subscriber server (HSS), where the answer data carries a hostname of a mobility management entity (MME); determining, on the basis of the hostname of the MME, a network actually registered for a user; and in a case where the network actually registered for the user is a 5G network, acquiring location information of the user in the 5G network.

Provided are a method for acquiring location information and an apparatus for acquiring location information, a device and a storage medium. The method includes: receiving answer data sent by a home subscriber server (HSS), where the answer data carries a hostname of a mobility management entity (MME); determining, on the basis of the hostname of the MME, a network actually registered for a user; and in a case where the network actually registered for the user is a 5G network, acquiring location information of the user in the 5G network.

A method performed by a first node (111) managing a P-CSCF in a first communications network (101). The method is for handling identification of a second communications network (201). One of the communications networks is a home network and the other is a visited network. The first node (111) obtains (701) a unique identifier uniquely identifying the second communications network (201) in a plurality of networks (200) sharing a Mobile Network identifier. The unique identifier is based on: a) an MCC and an MNC, corresponding to a shared PLMN identifier, and b) a subscriber identifier corresponding to the second network (201). The first node (111) also processes (702) provision of an IMS service across the communications networks, to a device (230) operating in the visited network, based on the identifier. The processing (702) comprises, in the home network, one of: i) application of a policy or rule, and ii) routing a communication to a S-CSCF.Publ.

A method performed by a first node (111) managing a P-CSCF in a first communications network (101). The method is for handling identification of a second communications network (201). One of the communications networks is a home network and the other is a visited network. The first node (111) obtains (701) a unique identifier uniquely identifying the second communications network (201) in a plurality of networks (200) sharing a Mobile Network identifier. The unique identifier is based on: a) an MCC and an MNC, corresponding to a shared PLMN identifier, and b) a subscriber identifier corresponding to the second network (201). The first node (111) also processes (702) provision of an IMS service across the communications networks, to a device (230) operating in the visited network, based on the identifier. The processing (702) comprises, in the home network, one of: i) application of a policy or rule, and ii) routing a communication to a S-CSCF.Publ.

Systems and methods are provided for public land mobile network (PLMN) selection for disaster roaming. A user equipment (UE) determines a disaster condition at a first PLMN, where the UE is a subscriber of the first PLMN. The UE determines an availability of a second PLMN for disaster roaming. The UE selects the second PLMN and attempts registration on the second PLMN for disaster roaming. In response to attempting the registration on the second PLMN for disaster roaming, the UE receives a registration reject message including a cause value corresponding to a registration failure for disaster roaming on the second PLMN due to the disaster condition on the first PLMN. The UE waits for a first period of time before again attempting to register for disaster roaming on the second PLMN for the first PLMN with the disaster condition.

Systems and methods are provided for public land mobile network (PLMN) selection for disaster roaming. A user equipment (UE) determines a disaster condition at a first PLMN, where the UE is a subscriber of the first PLMN. The UE determines an availability of a second PLMN for disaster roaming. The UE selects the second PLMN and attempts registration on the second PLMN for disaster roaming. In response to attempting the registration on the second PLMN for disaster roaming, the UE receives a registration reject message including a cause value corresponding to a registration failure for disaster roaming on the second PLMN due to the disaster condition on the first PLMN. The UE waits for a first period of time before again attempting to register for disaster roaming on the second PLMN for the first PLMN with the disaster condition.

A method for controlling a data transmission state by a terminal in a wireless communication system may comprise: transmitting capability configuration information of the terminal to a node of a network; applying a triggered communication environment configuration on the basis of the capability configuration information from the node; transmitting, to the node, first connection configuration information related to a wireless local area network (WLAN) connection configuration; and applying a first communication environment reconfiguration triggered from the node on the basis of the first connection configuration information, wherein the capability configuration information includes LWA function permission information of the terminal.