Section: 6.41.2.5 UE Discovery, Selection and Access
Content: Subject to operator’s policy and agreement between a 3rd party service provider and operator, the 5G system shall enable a UE to receive and use configuration provided by a 3rd party service provider to discover and access a hosting network and localized services, including the considerations of prior service agreement with a 3rd party service provider and no prior subscription to hosting network. If the UE is able to obtain services from two networks simultaneously, it may additionally select the hosting network. If the UE cannot maintain the connection to the home network while selecting the hosting network, the selection shall only be done on request by the user, i.e., using manual selection. The 5G system shall support secure means for a UE to select and access localized services which may be provided by a 3rd party service provider via a hosting network, independent of prior subscription to the hosting network or 3rd party service provider. The 5G system shall enable the home network to allow a UE to automatically select a hosting network for accessing localized services when specified conditions (e.g., predefined time, location) are fulfilled. The 5G system shall be able to prevent a UE to re-access the hosting network after the localized services were terminated if the authorization for the localized services is no longer valid (e.g., can be based on certain conditions such as time or location of the user). The 5G system may support means for a UE which may or may not have prior subscription to the hosting network to display human readable information on how to gain access to the hosting network and available 3rd party services. The 5G system shall support a mechanism to allow a user to manually select a specific local hosting network. NOTE: Additional information can be presented to the user to facilitate the manual network selection. The 5G system shall be able to limit access of specific UEs to a configurable area of a hosting network's coverage area. The 5G system shall be able to maintain privacy of a user against the hosting network while the UE does not make use of the hosting network, for example, to prevent tracking of UEs by hosting networks. The 5G system shall enable the home network to instruct a UE to select a hosting network with certain conditions (e.g., predefined time, location) based on the request from a service provider. The 5G system shall enable the home network to allow a UE to select a hosting network or change to another hosting network, without any additional user intervention as long as the delivered services, both localized services and home routed services, are unchanged.