Managing mobility registration access with respect to network slices
The present application relates to devices and components including apparatuses, systems, and methods for technologies for improving network slicing in wireless networks.
1 . One or more non-transitory, computer-readable media having instructions that, when executed, cause processor circuitry to:
generate, for transmission to a first access and mobility management function (AMF) of a first visited public land mobile network (VPLMN), a first registration request message that includes a requested network slice selection assistance information (NSSAI) and a network slice steering of roaming (NSSoR) indication to request an NSSoR update;
receive, in response to the registration request message, a registration accept message that includes an NSSoR container with information that indicates a second VPLMN supports one or more network slices, wherein the information of the NSSOR container comprises priority and slice-support information for a plurality of VPLMNs;
store the priority and slice-support information in a local VPLMN priority slice selection database;
initiate an application or service that is mapped to a first slice;
access the local VPLMN priority slice selection database to determine the one or more network slices supported by the second VPLMN include the first slice; and
generate a second registration request message for transmission to a second AMF of the second VPLMN based on the one or more network slices including the first slice.
2 . The one or more non-transitory, computer-readable media of claim 1 , wherein the instructions, when executed, further cause the processor circuitry to:
access the local VPLMN priority slice selection database to determine: a third VPLMN supports the first slice; the second VPLMN is associated with a first priority; and the third VPLMN is associated with a second priority that is less than the first priority; and
generate the second registration request message for transmission to the second AMF of the second VPLMN based on the first priority being greater than the second priority.
3 . The one or more non-transitory, computer-readable media of claim 1 , wherein the instructions, when executed, further cause the processor circuitry to:
determine the first VPLMN does not support the first slice.
4 . The one or more non-transitory, computer-readable media of claim 3 , wherein the instructions, when executed, further cause the processor circuitry to:
generate the second registration request message for transmission to the second AMF of the second VPLMN based on determination that the first VPLMN does not support the first slice.
5 . The one or more non-transitory, computer-readable media of claim 1 , wherein the requested NSSAI comprises a single-NSSAI (S-NSSAI) that corresponds to the first slice.
6 . The one or more non-transitory, computer-readable media of claim 1 , wherein the instructions, when executed, further cause the processor circuitry to:
terminate the application or service.
7 . The one or more non-transitory, computer-readable media of claim 6 , wherein the instructions, when executed, further cause the processor circuitry to:
perform a VPLMN reselection based on termination of the application or service.
8 . The one or more non-transitory, computer-readable media of claim 7 , wherein the instructions, when executed, further cause the processor circuitry to:
receive steering of roaming (SoR) information from a home network; and
perform the VPLMN reselection based on the SoR information.