UE Relay Authentication via PDU Session Modification in 5G
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Solution Overview
Problem
Existing wireless communication systems face challenges in providing secure session processing for user equipment (UE) in 5G and beyond networks, particularly in scenarios involving relay communications and device-to-device authentication.
Innovation Solution
A method and device for supporting authentication of a second UE by a first UE or a session management function (SMF) through the exchange of PDU session establishment and modification messages, including authentication information such as EAP messages, to enhance security in wireless communication systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional authentication methods are used in 5G relay communications, then network security is maintained, but authentication complexity and processing time increase for device-to-device scenarios
Solution Approach 1:
The patent introduces an authentication manager as an intermediary component that centralizes authentication logic. The authentication manager receives authentication requests from relay UEs, manages the authentication workflow with the network, and distributes authentication credentials to relevant devices. This mediator approach simplifies the authentication process for individual devices while maintaining comprehensive network security through centralized control.
Solution Approach 2:
The authentication process is segmented into distinct functional components: authentication request generation at the relay UE, authentication management at the authentication manager, and authentication verification at the network side. This segmentation allows each component to handle only its specific task, reducing overall system complexity while maintaining security through specialized processing at each stage.
2Reliability
If comprehensive authentication protocols are implemented for all UEs, then security is enhanced, but protocol overhead and processing time increase
Solution Approach 1:
The patent implements preliminary authentication where the authentication manager pre-establishes authentication credentials and security contexts before actual data transmission begins. Relay UEs and remote UEs receive pre-configured authentication information that enables rapid connection establishment without requiring full authentication protocols during time-critical communications, thus reducing processing time while maintaining security.
3Reliability
If authentication information is exchanged through multiple message exchanges, then authentication reliability is improved, but message overhead and network traffic increase
Solution Approach 1:
The patent merges multiple authentication information elements into consolidated authentication messages. Instead of exchanging separate messages for different authentication parameters, the authentication manager combines authentication credentials, security contexts, and authorization information into unified message structures. This merging reduces the total number of messages exchanged while maintaining complete authentication reliability through comprehensive information inclusion in each message.
Data Source
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AI summary
The present disclosure relates to a 5G or 6G communication system for supporting a higher data transfer rate. A method of supporting authentication of a second user equipment (UE) by a first UE in a wireless communication system may comprise the steps of: transmitting a PDU session establishment message (PDU session establishment) for a PDU session of the first UE to a session management function (SMF); receiving a PDU session establishment response message corresponding to the PDU session establishment message from the SMF; transmitting a PDU session modification message (PDU session modification) including a request for authentication information on the second UE to the SMF; and receiving a PDU session modification response message including the authentication information on the second UE from the SMF.