Search

CN-115104347-B - Apparatus and method for determining access network radio access type

CN115104347BCN 115104347 BCN115104347 BCN 115104347BCN-115104347-B

Abstract

Apparatuses, methods, and systems for determining a RAT of an untrusted access network are disclosed. An apparatus (400) includes a processor (405) and a transceiver (425) in communication with a first access network. A processor (405) obtains (605) an ANI for a first access network, the ANI comprising an access technology type of the first access network. The processor (405) determines (610) to register with a mobile communication network (e.g., 5 GC) via a first access network using an untrusted registration procedure and sends (615) a first request (e.g., ike_auth request) to establish a secure connection with an N3IWF in the mobile communication network. Here, the first request includes a registration request to the mobile communication network and an obtained ANI, wherein the obtained ANI is used by the mobile communication network to determine a RAT of the first access network. Via the transceiver (625), the processor (605) receives (620) a response to the registration request after establishing the secure connection with the N3IWF, wherein the response is RAT dependent.

Inventors

  • Apostolic Doris Solkins
  • Dimitrius Karampates
  • Gonadi Velev

Assignees

  • 联想（新加坡）私人有限公司

Dates

Publication Date
20260512
Application Date
20200213

Claims (11)

  1. 1. A user equipment ("UE") apparatus, comprising: a transceiver in communication with the first access network, and A processor, the processor: Obtaining access network information ("ANI") about the first access network, the ANI including an access technology type of the first access network; determining to register with a mobile communications network via the first access network using an untrusted registration procedure; Transmitting a first request to establish a secure connection with a non-3 GPP interworking function ("N3 IWF") in the mobile communications network, the first request including a registration request for the mobile communications network and an obtained ANI, wherein the obtained ANI is verified by the N3IWF and a radio access type ("RAT") of the first access network is determined based on whether the ANI is successfully verified, and After establishing the secure connection with the N3IWF, a response to the registration request is received, wherein the response is dependent on the RAT.
  2. 2. The UE apparatus of claim 1, wherein the processor establishes data with the mobile communication network via the first access network, wherein the data connection is configured to operate based on the RAT.
  3. 3. The UE device of claim 1, wherein obtaining the ANI comprises querying a server in the first access network, the server comprising one of a dynamic host configuration protocol ("DHCP") server and an access network query protocol ("ANQP") server.
  4. 4. The UE apparatus of claim 3, wherein obtaining the ANI comprises transmitting a DHCP request and receiving a DHCP Ack containing an access network identifier option, wherein the ANI is derived based on parameters included in the access network identifier option.
  5. 5. The UE device of claim 4, wherein the parameters in the access network identifier option include an access technology type, an access network identifier, and an operator identifier.
  6. 6. The UE apparatus of claim 1, wherein obtaining the ANI comprises receiving broadcast data from the first access network and deriving the ANI based on parameters in the broadcast data.
  7. 7. A method performed by a user equipment ("UE") device, comprising: obtaining access network information ("ANI") about a first access network, the ANI including an access technology type of the first access network; determining to register with a mobile communications network via the first access network using an untrusted registration procedure; Transmitting a first request to establish a secure connection with a non-3 GPP interworking function ("N3 IWF") in the mobile communications network, the first request including a registration request for the mobile communications network and an obtained ANI, wherein the obtained ANI is verified by the N3IWF and a radio access type ("RAT") of the first access network is determined based on whether the ANI is successfully verified, and A response to the registration request is received after establishing a secure connection with the N3IWF, wherein the response is dependent on the RAT.
  8. 8. A network equipment ("NE") apparatus comprising: A first network interface in communication with a non-3 GPP interworking function ("N3 IWF") in a mobile communications network, and A processor, the processor: Receiving, via the N3IWF, a first message including a registration request for a remote unit connected to the N3IWF via a first access network and access network information ("ANI") regarding the first access network; determining a radio access type ("RAT") of the first access network using the ANI; determining whether to accept the registration request based on the determined RAT, and Transmitting a response to the registration request to the remote unit, Wherein receiving the first message includes receiving an indication from the N3IWF whether the ANI was successfully authenticated, wherein determining the RAT is further based on whether the ANI was successfully authenticated.
  9. 9. The NE apparatus of claim 8, wherein the processor is further to send a policy request to a policy control function via a second network interface, the policy request including the RAT, wherein the policy control function derives an access management policy for a remote unit based on the RAT.
  10. 10. The NE apparatus of claim 8, wherein the processor is further to receive a request to establish a data connection for the remote unit via the N3IWF and to send a session context creation request to a session management function via a second network interface, the session context creation request including the RAT, wherein the session management function derives a session context including a session management policy for the data connection based on the RAT.
  11. 11. A method performed by a network equipment ("NE") device, comprising: Receiving a first message via a non-3 GPP interworking function ("N3 IWF"), the first message including a registration request for a remote unit connected to the N3IWF via a first access network and access network information ("ANI") regarding the first access network; determining a radio access type ("RAT") of the first access network using the ANI; determining whether to accept the registration request based on the determined RAT, and Transmitting a response to the registration request to the remote unit, Wherein receiving the first message includes receiving an indication from the N3IWF whether the ANI was successfully authenticated, wherein determining the RAT is further based on whether the ANI was successfully authenticated.

Description

Apparatus and method for determining access network radio access type Technical Field The subject matter disclosed herein relates generally to wireless communications, and more particularly to determining a radio access technology type, e.g., a type of untrusted access network. Background The following abbreviations and acronyms are defined herein, at least some of which are referenced in the following description. The third generation partnership project ("3 GPP"), fifth generation core ("5 GC"), access and mobility management function ("AMF"), access point name ("APN"), access layer ("AS"), access network information ("ANT"), application programming interface ("API"), data network name ("DNN"), downlink ("DL"), enhanced mobile broadband ("eMBB"), evolved node B ("eNB"), evolved packet core ("EPC"), evolved UMTS terrestrial radio access network ("E-UTRAN"), home subscriber server ("HSS"), IP multimedia subsystem ("IMS", also known AS IP multimedia core network subsystem "), internet protocol (" IP "), long term evolution (" LTE "), advanced LTE (" LTE-a "), media access control (" MAC "), mobile network operator (" MNO "), mobility management entity (" MME "), non-access layer (" NAS "), narrowband (" NB "), network function (" NF "), network access identifier (" NAI "), next-generation (e.g., 5G) node B (" NB "), next PCF radio access network (" NG-RAN "), new radio (" NR "), control function (" policy "), packet data generation (" PDN ") Packet data units ("PDU"), PDN gateway ("PGW"), public land mobile network ("PLMN"), quality of service ("QoS"), radio access network ("RAN"), radio access technology ("RAT"), radio resource control ("RRC"), reception ("Rx"), single network slice selection assistance information ("S-NSSAI"), serving gateway ("SGW"), session management function ("SMF"), transmission control protocol ("TCP"), transmission ("Tx"), unified data management ("UDM"), user entity/device (mobile terminal) ("UE"), uplink ("UL"), user plane ("UP"), universal mobile telecommunications system ("UMTS"), user datagram protocol ("UDP"), user location information ("ULI"), wireless local area network ("WLAN"), and worldwide interoperability for microwave access ("WiMAX"). In some embodiments, the UE may connect to the 5G core in the PLMN via several types of untrusted non-3 GPP access networks, all of which provide IP connectivity between the UE in the 5G core ("5 GC") and the non-3 GPP interworking function (N3 IWF). However, when a UE accesses a 5GC via an N3IWF, the 5GC does not know what type of untrusted non-3 GPP access network is used by the UE. Disclosure of Invention Methods for determining a RAT for an untrusted access network are disclosed. The apparatus and system also perform the functions of these methods. One method for a UE to determine a RAT of an untrusted access network includes obtaining an ANI for a first access network, the ANI including an access technology type of the first access network. The method includes determining to register with the mobile communication network via a first access network using an untrusted registration procedure, and sending a first request to establish a secure connection with an N3IWF in the mobile communication network. Here, the first request includes a registration request to the mobile communication network and an obtained ANI, wherein the obtained ANI is used by the mobile communication network to determine a RAT of the first access network. The method includes receiving a response to the registration request after establishing the secure connection with the N3IWF, wherein the response is RAT dependent. A method of an N3IWF for determining a RAT of an untrusted access network includes receiving a first request from a remote unit to establish a secure connection. Here, the first request includes a registration request of the mobile communication network, a first source address, and an ANI for the first access network. The method includes verifying an ANI using a first source address and the ANI and sending a first message to the AMF including a registration request and the ANI, wherein the ANI is used by the AMF to determine a RAT of the first access network, and wherein the mobile communication network processes the registration request based on the determined RAT. A method of an AMF for determining a RAT of an untrusted access network includes receiving, via an N3IWF, a first message including a registration request for a remote unit connected to the N3IWF via the first access network. Here, the first message further comprises an ANI for the first access network. The method includes determining a RAT of the first access network using the ANI. The method includes determining whether to accept the registration request based on the determined RAT and transmitting a response to the registration request to the remote unit. Another method of the N3IWF for determining a RAT of an untrusted access network includes receiving a first request from a remote un