Connecting to virtualized mobile core networks
A 5G Network Architecture uses virtualization and network slicing. The user equipment (UE) interacts with an underlay network that interacts with virtual network slices. The UE interacts with the underlay network (ULN) to establish a connection to a virtual network slice. Procedures are defined to assign a new slice instance to a UE (UE initiated and ULN initiated); to change a UE Profile (UE initiated and ULN Initiated); and to change a UE's assigned slice instance (ULN Initiated).
1. A method comprising:
receiving an initial connection message from a User Equipment (UE), wherein the initial connection message comprises a temporary identifier and a plurality of service descriptors, wherein the plurality of service descriptors comprise an indication of plurality of network services that the UE is expected to access;
determining, based on the temporary identifier, an authentication server for authenticating the UE;
communicating with the authentication server to authenticate the UE;
obtaining UE subscription information from a User Data Repository (UDR), the subscription information includes identifiers of each of one or more slices that can be used by the UE:
determining, based on the plurality of service descriptors and the UE subscription information, at least one network slice to which the UE should connect; and
sending, to the UE, a response message comprising a new temporary identifier for the UE, an indication of whether or not the connection to the at least one network slice is permitted, and the identifiers of at least one of the one or more slices that are available for use by UE.
2. The method of claim 1 , wherein the initial connection message comprises an indication of one or more capabilities of the UE.
3. The method of claim 1 , further comprising using the plurality of the service descriptors to determine the authentication server for authenticating the UE.
4. The method of claim 1 , wherein the response message comprises an indication of whether or not connection to the at least one network slice can be provided.
5. The method of claim 1 , further comprising querying a node to determine what network slices the UE should connect to.
6. The method of claim 1 , further comprising querying a node for policies related to what network services the UE may access.
7. The method of claim 1 , wherein the response message comprises an indication of whether or not connection to all requested network services can be provided.
8. A system comprising:
one or more processors; and
memory coupled with the one or more processors, the memory storing executable instructions that when executed by the one or more processors cause the one or more processors to effectuate operations comprising:
receiving an initial connection message from a User Equipment (UE), wherein the initial connection message comprises a temporary identifier and a plurality of service descriptors, wherein the plurality of service descriptors comprises an indication of plurality of network services that the UE is expected to access;
determining, based on the temporary identifier, an authentication server for authenticating the UE;
communicating with the authentication server to authenticate the UE;
obtaining UE subscription information from a User Data Repository (UDR), the subscription information includes identifiers of each of one or more slices that can be used by the UE:
determining, based on the plurality of service descriptors and the UE subscription information, at least one network slice to which the UE should connect; and
sending a response message comprising a new temporary identifier for the UE, an indication of whether or not the connection to the at least one network slice is permitted, and the identifiers of at least one of the one or more slices that are available for use by UE.
9. The system of claim 8 , wherein the initial connection message comprises an indication of one or more capabilities of the UE.
10. The system of claim 8 , the operations further comprising using the plurality of the service descriptors to determine the authentication server for authenticating the UE.
11. The system of claim 8 , wherein the response message comprises an indication of whether or not connection to the at least one network slice can be provided.
12. The system of claim 8 , the operations further comprising querying a node to determine what network slices the UE should connect to.
13. The system of claim 8 , the operations further comprising querying a node for policies related to what network services the UE may access.
14. The system of claim 8 , wherein the response message comprises an indication of whether or not connection to all requested network services can be provided.
15. A computer readable storage medium storing computer executable instructions that when executed by a computing device cause said computing device to effectuate operations comprising:
receiving an initial connection message from a User Equipment (UE), wherein the initial connection message comprises a temporary identifier and a plurality of service descriptors, wherein the plurality of service descriptors comprises an indication of plurality of network services that the UE is expected to access;
determining, based on the temporary identifier, an authentication server for authenticating the UE;
communicating with the authentication server to authenticate the UE;
obtaining UE subscription information from a User Data Repository (UDR), the subscription information includes identifiers of each of one or more slices that can be used by the UE:
determining, based on the plurality of service descriptors and the UE subscription information, at least one network slice to which the UE should connect; and
sending a response message comprising a new temporary identifier for the UE, an indication of whether or not the connection to the at least one network slice is permitted, and the identifiers of at least one of the one or more slices that are available for use by UE.
16. The computer readable storage medium of claim 15 , wherein the initial connection message comprises an indication of one or more capabilities of the UE.
17. The computer readable storage medium of claim 15 , the operations further comprising using the plurality of the service descriptors to determine the authentication server for authenticating the UE.
18. The computer readable storage medium of claim 15 , wherein the response message comprises an indication of whether or not connection to the at least one network slice can be provided, or wherein the response message comprises an indication of whether or not connection to all requested network services can be provided.
19. The computer readable storage medium of claim 15 , the operations further comprising querying a node to determine what network slices the UE should connect to.
20. The computer readable storage medium of claim 15 , the operations further comprising querying a node for policies related to what network services the UE may access.