Policy based selection of network
Apparatuses and methods for policy based selection of a network. In one embodiment, a method implemented in a user equipment (UE) includes obtaining a transfer policy from a policy node of a first network, the transfer policy being associated with a network selection for an application; and determining whether the application is to be transferred from using the first network to using a second network based at least in part on the obtained transfer policy, the first network being one of a standalone non-public network, SNPN, and a public land mobile network, PLMN and the second network being another one of the SNPN and the PLMN and the transfer policy being based at least in part on at least one of: (i) Quality-of-service, QoS, information associated with the application and (ii) whether the UE has a subscription to the second network.
1 . A method implemented in a user equipment, UE, the method comprising:
obtaining a transfer policy from a policy node of a first network, the transfer policy being associated with a network selection for an application; and
determining whether the application is to be transferred from using the first network to using a second network based at least in part on the obtained transfer policy, the first network being one of a standalone non-public network, SNPN, and a public land mobile network, PLMN and the second network being another one of the SNPN and the PLMN and the transfer policy being based at least in part on Quality-of-service, QoS, information associated with the application,
wherein the QoS information comprises a Quality-of-service, QoS, sustainability prediction for a plurality of user equipments, UEs, that are expected to use the application.
2 . The method of claim 1 , further comprising:
sending traffic associated with the application over one of the first network and the second network based at least in part on the determination.
3 . The method of claim 1 , wherein the UE is registered to the first network and
the method further comprises:
as a result of a determination to transfer the application to the second network, registering to the second network and establishing a protocol data unit, PDU, session in the second network; and
sending traffic associated with the application over the second network via the established PDU session.
4 . The method of claim 1 , wherein the UE is registered to the first network and
the method further comprises:
as a result of a determination to not transfer the application to the second network, sending traffic associated with the application over the first network that the UE is registered to.
5 . The method of claim 1 , wherein the UE has a first subscription to the first network and a second subscription to the second network.
6 . The method of claim 5 , wherein at least one of:
the transfer policy indicates a date and a time during which the transfer policy is valid;
the transfer policy indicates a location at which the transfer policy is valid; and
the location, the date and the time indicated in the transfer policy corresponding to an expected use of the application at a pre-determined event associated with the SNPN.
7 . The method of claim 6 , further comprising:
when the transfer policy becomes invalid according to the location, the date and the time indicated in the transfer policy, discarding the transfer policy.
8 . The method of claim 1 , wherein the transfer policy indicates a network identifier, the network identifier identifying one of the first network and the second network to which the application is to be transferred to.
9 . The method of claim 1 , wherein the transfer policy indicates an application identifier, the application identifier identifying the application that is to be transferred according to the transfer policy.
10 . The method of claim 1 , wherein the transfer policy indicates a preferred access type, the preferred access type comprising a network identifier identifying one of the first network and the second network to which the application is to be transferred to.
11 . The method of claim 10 , wherein the transfer policy indicates a route selection descriptor, RSD, the RSD indicating the preferred access type and the network identifier.
12 . The method of claim 10 , wherein the transfer policy includes information indicating a traffic associated with the application.
13 . The method of claim 8 , wherein the information is comprised in a traffic descriptor, the traffic descriptor identifying the application that is to be transferred according to the transfer policy.
14 . The method of claim 13 , wherein the traffic descriptor further comprises a rule correlation identifier, ID;
the method further comprising determining whether the rule correlation ID is a same for both the first network and the second network; and
sending traffic to one of the first network and the second network based at least in part on whether the rule correlation ID is the same.
15 . The method of claim 1 , wherein the application is identified in the transfer policy as a Video, Imaging and Audio for Professional Application, VIAPA, application.
16 . The method of claim 1 , wherein the transfer policy is a UE route selection policy, URSP, and the policy node comprises a policy control function, PCF.
17 . The method of claim 1 , wherein the QoS sustainability prediction is based on local policies and analytics on QoS sustainability in a location of the plurality of UEs at an analytics target period in the future.
18 . A method implemented in a network exposure, NE, node, the method comprising:
receiving a transfer policy request, the transfer policy request being associated with an application and the transfer policy request being related to a network selection for the application;
as a result of the received transfer policy request, sending the transfer policy request to a policy node associated with a first network; and
receiving a transfer policy response identifying a transfer policy, the transfer policy indicating whether the application is to be transferred to using a second network, the second network being different from the first network associated with the policy node, the first network being one of a standalone non-public network, SNPN, and a public land mobile network, PLMN and the second network being another one of the SNPN and the PLMN and the transfer policy being based at least in part on Quality-of-service, QoS, information associated with the application,
wherein the QoS information comprises a Quality-of-service, QoS, sustainability prediction for a plurality of user equipments, UEs, that are expected to use the application.
19 . The method of claim 18 , wherein the transfer policy request indicates at least one of a plurality of user equipments, UEs, that are expected to use the application, a time and a date that the plurality of UEs are expected to use the application and at least one Quality-of-service, QoS, requirement for the application.
20 . The method of claim 18 , wherein the QoS sustainability prediction is based on local policies and analytics on QoS sustainability in a location of the plurality of UEs at an analytics target period in the future.