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EP-4740532-A1 - METHOD AND DEVICE FOR PERFORMING SECONDARY RE-AUTHENTICATION FOR A MA-PDU SESSION IN A WIRELESS COMMUNICATION SYSTEM

EP4740532A1EP 4740532 A1EP4740532 A1EP 4740532A1EP-4740532-A1

Abstract

Embodiments herein disclose a method and device for performing secondary re-authentication for a MA-PDU session in a wireless communication system. The method for performing authentication for a multi-access packet data unit (MA-PDU) session by a session management function + packet data network (PDN) gateway control plane function (SMF+PGW-C) in a wireless communication network is provided, the method comprises performing a procedure for secondary re-authentication of the MA-PDU session for a user equipment (UE) by selecting one of a first access type or a second access type in case that the SMF+PGW-C receives a re-authentication request from a data network - authentication, authorization, and accounting (DN-AAA) server, retrying a procedure for the secondary re-authentication of the MA-PDU session for the second access type in case that the SMF+PGW-C receives a failure indication for the secondary re-authentication that the UE is not reachable in the first access type, and retrying a procedure for the secondary re-authentication of the MA-PDU session for the first access type in case that the SMF+PGW-C receives a failure indication of the secondary re-authentication that the UE is not reachable in the second access type.

Inventors

  • Nayak, Ashok Kumar
  • KUMAR, Lalith
  • KIM, DONGYEON
  • TANGUDU, NARENDRANATH DURGA

Assignees

  • Samsung Electronics Co., Ltd.

Dates

Publication Date
20260513
Application Date
20240708

Claims (14)

  1. A method for performing authentication for a multi-access packet data unit (MA-PDU) session by a session management function + packet data network (PDN) gateway control plane function (SMF+PGW-C) in a wireless communication network, the method comprising: performing a procedure for secondary re-authentication of the MA-PDU session for a user equipment (UE) by selecting one of a first access type or a second access type in case that the SMF+PGW-C receives a re-authentication request from a data network - authentication, authorization, and accounting (DN-AAA) server; retrying a procedure for the secondary re-authentication of the MA-PDU session for the second access type in case that the SMF+PGW-C receives a failure indication for the secondary re-authentication that the UE is not reachable in the first access type; and retrying a procedure for the secondary re-authentication of the MA-PDU session for the first access type in case that the SMF+PGW-C receives a failure indication of the secondary re-authentication that the UE is not reachable in the second access type.
  2. The method of claim 1, wherein the first access type is one of an evolved packet core (EPC) and a fifth generation core (5GC), and the second access type is another one of the EPC and the 5GC.
  3. The method of claim 1, wherein the first access type is one of a third generation partnership project (3GPP) access and a non-3GPP access, and the second access type is another one of the 3GPP access and the non-3GPP access.
  4. The method of claim 1, wherein in case that the one access type selected by the SMF+PGW-C is non-3GPP connected to 5GC, the failure indication is received from an access mobility function (AMF).
  5. The method of claim 1, wherein in case that the one access type selected by SMF+PGW-C is 3GPP connected to EPC, the failure indication is received from a mobility management entity (MME).
  6. The method of claim 1, further comprising informing the DN-AAA server that the UE is not reachable for the re-authentication in case that the SMF+PGW-C receives the failure indication that the UE is not reachable in both the first access type and the second access type, respectively.
  7. The method of claim 6, further comprising releasing the MA-PDU session in case that the SMF+PGW-C receives the failure indication that the UE is not reachable in both the first access type and the second access type, respectively.
  8. A session management function + packet data network (PDN) gateway control plane function (SMF+PGW-C), the SMF+PGW-C comprising: a communication interface; and a processor configured to: perform, through the communicator, a procedure for secondary re-authentication of the MA-PDU session for a user equipment (UE) by selecting one of a first access type or a second access type in case that the SMF+PGW-C receives a re-authentication request from a data network - authentication, authorization, and accounting (DN-AAA) server, retry, through the communicator, a procedure for the secondary re-authentication of the MA-PDU session for the second access type in case that the SMF+PGW-C receives a failure indication for the secondary re-authentication that the UE is not reachable in the first access type, and retry, through the communicator, a procedure for the secondary re-authentication of the MA-PDU session for the first access type in case that the SMF+PGW-C receives a failure indication of the secondary re-authentication that the UE is not reachable in the second access type.
  9. The SMF+PGW-C of claim 8, wherein the first access type is one of an evolved packet core (EPC) and a fifth generation core (5GC), and the second access type is another one of the EPC and the 5GC.
  10. The SMF+PGW-C of claim 8, wherein the first access type is one of a third generation partnership project (3GPP) access and a non-3GPP access, and the second access type is another one of the 3GPP access and the non-3GPP access.
  11. The SMF+PGW-C of claim 8, wherein in case that the one access type selected by the SMF+PGW-C is non-3GPP connected to 5GC, the failure indication is received from an access mobility function (AMF).
  12. The SMF+PGW-C of claim 8, wherein in case that the one access type selected by SMF+PGW-C is 3GPP connected to EPC, the failure indication is received from a mobility management entity (MME).
  13. The SMF+PGW-C of claim 8, wherein the processor is further configured to inform, through the communicator, the DN-AAA server that the UE is not reachable for the re-authentication in case that the SMF+PGW-C receives the failure indication that the UE is not reachable in both the first access type and the second access type, respectively.
  14. The SMF+PGW-C of claim 13, wherein the processor is further configured to release the MA-PDU session in case that the SMF+PGW-C receives the failure indication that the UE is not reachable in both the first access type and the second access type, respectively.

Description

METHOD AND DEVICE FOR PERFORMING SECONDARY RE-AUTHENTICATION FOR A MA-PDU SESSION IN A WIRELESS COMMUNICATION SYSTEM Embodiments disclosed herein relate to wireless communication networks, and more particularly to supporting secondary authentication and authorization on the user equipment (UE) initiating the session establishment with the data network (DN). 5G mobile communication technologies define broad frequency bands such that high transmission rates and new services are possible, and can be implemented not only in "Sub 6GHz" bands such as 3.5GHz, but also in "Above 6GHz" bands referred to as mmWave including 28GHz and 39GHz. In addition, it has been considered to implement 6G mobile communication technologies (referred to as Beyond 5G systems) in terahertz bands (for example, 95GHz to 3THz bands) in order to accomplish transmission rates fifty times faster than 5G mobile communication technologies and ultra-low latencies one-tenth of 5G mobile communication technologies. At the beginning of the development of 5G mobile communication technologies, in order to support services and to satisfy performance requirements in connection with enhanced Mobile BroadBand (eMBB), Ultra Reliable Low Latency Communications (URLLC), and massive Machine-Type Communications (mMTC), there has been ongoing standardization regarding beamforming and massive MIMO for mitigating radio-wave path loss and increasing radio-wave transmission distances in mmWave, supporting numerologies (for example, operating multiple subcarrier spacings) for efficiently utilizing mmWave resources and dynamic operation of slot formats, initial access technologies for supporting multi-beam transmission and broadbands, definition and operation of BWP (BandWidth Part), new channel coding methods such as a LDPC (Low Density Parity Check) code for large amount of data transmission and a polar code for highly reliable transmission of control information, L2 pre-processing, and network slicing for providing a dedicated network specialized to a specific service. Currently, there are ongoing discussions regarding improvement and performance enhancement of initial 5G mobile communication technologies in view of services to be supported by 5G mobile communication technologies, and there has been physical layer standardization regarding technologies such as V2X (Vehicle-to-everything) for aiding driving determination by autonomous vehicles based on information regarding positions and states of vehicles transmitted by the vehicles and for enhancing user convenience, NR-U (New Radio Unlicensed) aimed at system operations conforming to various regulation-related requirements in unlicensed bands, NR UE Power Saving, Non-Terrestrial Network (NTN) which is UE-satellite direct communication for providing coverage in an area in which communication with terrestrial networks is unavailable, and positioning. Moreover, there has been ongoing standardization in air interface architecture/protocol regarding technologies such as Industrial Internet of Things (IIoT) for supporting new services through interworking and convergence with other industries, IAB (Integrated Access and Backhaul) for providing a node for network service area expansion by supporting a wireless backhaul link and an access link in an integrated manner, mobility enhancement including conditional handover and DAPS (Dual Active Protocol Stack) handover, and two-step random access for simplifying random access procedures (2-step RACH for NR). There also has been ongoing standardization in system architecture/service regarding a 5G baseline architecture (for example, service based architecture or service based interface) for combining Network Functions Virtualization (NFV) and Software-Defined Networking (SDN) technologies, and Mobile Edge Computing (MEC) for receiving services based on UE positions. As 5G mobile communication systems are commercialized, connected devices that have been exponentially increasing will be connected to communication networks, and it is accordingly expected that enhanced functions and performances of 5G mobile communication systems and integrated operations of connected devices will be necessary. To this end, new research is scheduled in connection with eXtended Reality (XR) for efficiently supporting AR (Augmented Reality), VR (Virtual Reality), MR (Mixed Reality) and the like, 5G performance improvement and complexity reduction by utilizing Artificial Intelligence (AI) and Machine Learning (ML), AI service support, metaverse service support, and drone communication. Furthermore, such development of 5G mobile communication systems will serve as a basis for developing not only new waveforms for providing coverage in terahertz bands of 6G mobile communication technologies, multi-antenna transmission technologies such as Full Dimensional MIMO (FD-MIMO), array antennas and large-scale antennas, metamaterial-based lenses and antennas for improving coverage of terahertz band signals