SNPN onboarding and obtaining SNPN services from a PLMN
A user equipment (UE) operating in an “Onboarding Mode” may search for a network broadcasting Onboarding Capability Information (OCT), then register using onboarding credentials and receive SNPN credentials from the network. The UE may then exit onboarding mode, enter Manual Network Selection or Automatic Network Selection mode, and connect to the SNPN. A UE may also receive from a network a list of PLMNs and SNPNs that are equivalent then, when registering, indicate to the network that a requested slice is not associated with the IJE's HPLMN, but is associated with an SNPN. The network may indicate to the UE how the slices of the network map to the slices of the SNPN, and may indicate whether a slice that is offered by the network only partially maps to a slice of the SNPN or HPLMN.
1. A wireless transmit/receive unit (WTRU), comprising circuitry including a transmitter, a receiver, a processor and a memory, configured to:
receive first broadcasted information from a network, the first broadcasted information comprising an onboarding support indicator;
send, to the network, a first request, the first request indicating system information be broadcasted on-demand, the system information being associated with a group identifier;
receive, from the network, second broadcasted information comprising the group identifier;
determine, using the second broadcasted information, to perform an onboarding operation with the network;
send, to the network, (i) a non-access stratum (NAS) registration request comprising a first onboarding indication and (ii) a radio resource control (RRC) message comprising a second onboarding indication;
receive, from the network, standalone non-public network (SNPN) credentials for an SNPN; and
register with the SNPN based on the SNPN credentials.
2. The WTRU of claim 1 , wherein the WTRU is configured to communicate with an access and mobility management function (AMF), the AMF being selected by the network based on the second onboarding indication.
3. The WTRU of claim 1 , wherein at least one of the NAS registration request and RRC message comprises information to assist the network in determining a network function that can be used to authenticate the WTRU based on onboarding credentials of the WTRU.
4. The WTRU of claim 1 , wherein at least one of the NAS registration request and RRC message comprises an indication that the WTRU desires to authenticate the network.
5. The WTRU of claim 1 , wherein any of the first and second broadcasted information comprises an indication of whether the network supports a control plane onboarding procedure, a user plane onboarding procedure, or both the control plane onboarding procedure and the user plane onboarding procedure.
6. The WTRU of claim 1 , wherein any of the first and second broadcasted information comprises an indication of types of network slices that are supported by the network.
7. The WTRU of claim 1 , wherein the SNPN credentials comprise a subscription permanent identifier (SUPI) and an SNPN identity.
8. The WTRU of claim 7 , wherein the SNPN credentials further comprise information necessary for the WTRU to establish a tunnel between the WTRU and a non-3GPP interworking function (N3IWF) of the SNPN.
9. The WTRU of claim 1 , further configured to switch to a manual network selection mode or an automatic network selection mode.
10. The WTRU of claim 1 , further configured to receive the SNPN credentials during a registration procedure.
11. The WTRU of claim 1 , further configured to receive the SNPN credentials in an NAS Message.
12. The WTRU of claim 1 , further configured to:
receive authentication, authorization, and accounting (AAA) information from the network;
direct, based on the AAA information, application traffic towards an AAA server of the network, and
receive the SNPN credentials from the AAA server.
13. The WTRU of claim 12 , wherein further configured to receive the AAA information during a registration procedure.
14. The WTRU of claim 12 , further configured to receive the AAA information in a policy.
15. A network apparatus at a Radio Access Network (RAN) node, comprising circuitry including a transmitter, a receiver, a processor and a memory, configured to:
transmit first broadcast information comprising an onboarding support indicator;
receive a first request, the first request indicating system information be broadcasted on-demand, the system information being associated with a group identifier;
transmit second broadcast information comprising the group identifier;
receive, from a wireless transmit/receive unit (WTRU), (i) a non-access stratum (NAS) registration request comprising a first onboarding indication and (ii) a radio resource control (RRC) message comprising a second onboarding indication;
select, based on the second onboarding indication, an access and mobility management function (AMF) to communicate with the WTRU;
send, to the AMF, the NAS registration request;
receive, from the AMF, a registration response; and
send, to the WTRU, the registration response.
16. The network apparatus of claim 15 , wherein:
the RRC message further comprises an identifier or a credential type; and
the network apparatus being configured to select, based on the second onboarding indication, an AMF to communicate with the WTRU comprises the apparatus being configured to select the AMF based on the second onboarding indication in combination with the identifier or credential type.
17. The network apparatus of claim 15 , wherein:
the RRC message further comprises a domain identifier or a device capability indication; and
the network apparatus being configured to select, based on the second onboarding indication, an AMF to communicate with the WTRU comprises the apparatus being configured to select the AMF based on the second onboarding indication in combination with the domain identifier or device capability indication.
18. A method implemented in wireless transmit/receive unit (WTRU), the method comprising:
receiving first broadcasted information from a network, the first broadcasted information comprising an onboarding support indicator;
sending, to the network, a first request, the first request indicating system information be broadcasted on-demand, the system information being associated with a group identifier;
receiving, from the network, second broadcasted information comprising the group identifier;
determining, using the second broadcasted information, to perform an onboarding operation with the network;
sending, to the network, (i) a non-access stratum (NAS) registration request part comprising a first onboarding indication and (ii) a radio resource control (RRC) message comprising a second onboarding indication;
after receipt of a registration response, receiving, from the network, standalone non-public network (SNPN) credentials for an SNPN; and
register with the SNPN based on the SNPN credentials.
19. The method of claim 18 , further comprising communicating with an access and mobility management function (AMF), the AMF being selected by the network based on the second onboarding indication.
20. The method of claim 18 , wherein at least one of the NAS registration request and RRC message comprises information to assist the network in determining a network function that can be used to authenticate the WTRU based on onboarding credentials of the WTRU.
21. The method of claim 18 , wherein at least one of the NAS registration request and RRC message comprises an indication that the WTRU desires to authenticate the network.
22. The method of claim 18 , wherein any of the first and second broadcasted information comprises an indication of whether the network supports a control plane onboarding procedure, a user plane onboarding procedure, or both the control plane onboarding procedure and the user plane onboarding procedure.
23. The method of claim 18 , wherein any of the first and second broadcasted information comprises an indication of types of network slices that are supported by the network.
24. The method of claim 18 , wherein the SNPN credentials comprise a subscription permanent identifier (SUPI) and an SNPN identity.
25. The method of claim 24 , wherein the SNPN credentials further comprise information necessary for the WTRU to establish a tunnel between the WTRU and a non- 3 GPP interworking function (N3IWF) of the SNPN.
26. The method of claim 18 , further comprising switching to a manual network selection mode or an automatic network selection mode.
27. The method of claim 18 , wherein the SNPN credentials are received during a registration procedure.
28. The method of claim 18 , wherein the SNPN credentials are received in an NAS Message.
29. The method of claim 18 , further comprising:
receiving authentication, authorization, and accounting (AAA) information from the network; and
directing, based on the AAA information, application traffic towards an AAA server of the network,
wherein the SNPN credentials are received from the AAA server.
30. The method of claim 29 , wherein the AAA information is received during a registration procedure.
31. The method of claim 29 , further comprising receiving a policy, wherein the policy comprises the AAA information.