Method and system for network slice authentication and authorization

Patent metadata

Field	Value
Publication number	US-11528659-B2
Application number	US-202017087490-A
Country	US
Kind code	B2
Filing date	Nov 2, 2020
Priority date	Nov 2, 2019
Publication date	Dec 13, 2022
Grant date	Dec 13, 2022

Abstract

The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. Embodiments disclose a method and system for handling a network slice specific authentication and authorization (NSSAA) process in a wireless network system.

First claim

What is claimed is:

1. A method for handling a network slice specific authentication and authorization (NSSAA) procedure by a source access and mobility function (AMF) device in a wireless communication system, the method comprising:
identifying that the NSSAA procedure is ongoing for at least one single network slice selection assistance information (S-NSSAI);
identifying that an inter-AMF handover procedure is triggered from the source AMF device to a target AMF device; and
transferring, to the target AMF device, a NSSAA status list for the at least one S-NSSAI to inform that a NSSAA status of the at least one S-NSSAI is pending during the inter-AMF handover procedure.

2. The method as claimed in claim 1 ,
wherein the NSSAA status list is used, by the target AMF device, to determine whether to perform the NSSAA procedure for the at least one S-NSSAI.

3. The method as claimed in claim 1 , comprising:
identifying that the NSSAA procedure is completed; and
marking the at least one S-NSSAI as a part of one of an allowed NSSAI list or a rejected S-NSSAI list.

4. The method according to claim 1 , wherein the target AMF device supports the NSSAA procedure.

5. The method according to claim 1 , wherein the ongoing NSSAA procedure corresponds to non-assignment of a protocol data unit (PDU) session to a user equipment (UE) for the at least one S-NSSAI.

6. The method according to claim 1 , wherein the NSSAA status list is included in a CreateUEContext request message transferred from the source AMF device to the target AMF device, the CreateUEContext request message being used to create a user equipment (UE) context in the target AMF device.

7. A source access and management function (AMF) device for handling a network slice specific authentication and authorization (NSSAA) procedure, the source AMF device comprising:
a transceiver; and
a controller coupled with the transceiver and configured to:
identify that the NSSAA procedure is ongoing for at least one single network slice selection assistance information (S-NSSAI);
identify that an inter-AMF handover procedure is triggered from the source AMF device to a target AMF device; and
transfer, to the target AMF device, a NSSAA status list for the at least one S-NSSAI to inform that a NSSAA status of the at least one S-NSSAI is pending during the inter-AMF handover procedure.

8. The source AMF device as claimed in claim 7 ,
wherein the NSSAA status list is used, by the target AMF device, to determine whether to perform the NSSAA process procedure for the at least one S-NSSAI.

9. The source AMF device as claimed in claim 7 , wherein the controller is further configured to:
identify that the NSSAA procedure is completed; and
mark the at least one S-NSSAI as a part of one of an allowed NSSAI list or a rejected S-NSSAI list.

10. The source AMF device according to claim 7 , wherein the target AMF device supports the NSSAA process procedure.

11. The source AMF device according to claim 7 , wherein the ongoing NSSAA procedure corresponds to non-assignment of a protocol data unit (PDU) session to a user equipment (UE) for the at least one S-NSSAI.

12. The source AMF device according to claim 7 , wherein the NSSAA status list is included in a CreateUEContext request message transferred from the source AMF device to the target AMF device, the CreateUEContext request message being used to create a user equipment (UE) context in the target AMF device.

13. A method for handling a network slice specific authentication and authorization (NSSAA) procedure by a target access and mobility function (AMF) device in a wireless communication system, the method comprising:
receiving, from a source AMF device, a NSSAA status list for at least one single network slice selection assistance information (S-NSSAI) to inform a NSSAA status of the at least one S-NSSAI, during a inter-AMF handover procedure; and
determining whether to perform the NSSAA procedure for at least one S-NSSAI based on the NSSAA status list, and
wherein in case that the NSSAA procedure is ongoing for at least one S-NSSAI, the NSSAA status list informs that the NSSAA status of the at least one S-NSSAI is pending.

14. The method according to claim 13 , further comprising:
updating the NSSAA status of the at least one S-NSSAI; and
sending the updated NSSAA status of the at least one S-NSSAI to a user equipment (UE), and
wherein the updated NSSAA status of the at least one S-NSSAI is a first status indicating that the NSSAA status of the at least one S-NSSAI is successful or a second status indicating that the NSSAA status of the at least one S-NSSAI is failure.

15. A target access and management function (AMF) device for handling a network slice specific authentication and authorization (NSSAA) procedure, the target AMF device comprising:
a transceiver; and
a controller coupled with the transceiver and configured to:
receive, from a source AMF device, a NSSAA status list of at least one single network slice selection assistance information (S-NSSAI) to inform a NSSAA status of the at least one S-NSSAI, during a inter-AMF handover procedure, and
determine whether to perform the NSSAA procedure for at least one S-NSSAI based on the NSSAA status list, and
wherein in case that the NSSAA procedure is ongoing for at least one S-NSSAI, the NSSAA status list informs that the NSSAA status of the at least one S-NSSAI is pending.

16. The target AMF device according to claim 15 , wherein the controller is further configured to:
update the NSSAA status of the at least one S-NSSAI; and
send the updated NSSAA status of the at least one S-NSSAI to a user equipment (UE), and
wherein the updated NSSAA status of the at least one S-NSSAI is a first status indicating that the NSSAA status of the at least one S-NSSAI is successful or a second status indicating that the NSSAA status of the at least one S-NSSAI is failure.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Tiwari Kundan
• Rajadurai Rajavelsamy
• Lee Hoyeon

Classifications

• H04W36/32

  by location or mobility data, e.g. speed data · CPC title

• H04W60/04

  using triggered events · CPC title

• H04W12/06 Primary

  Authentication · CPC title

• H04W36/12 Primary

  Reselecting a serving backbone network switching or routing node · CPC title

• H04W76/11

  Allocation or use of connection identifiers · CPC title