ProSe U2N Relay Security Configuration for CP/UP Selection
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Solution Overview
Problem
Existing 5G ProSe communication via U2N relay systems face challenges in effectively managing control plane (CP) and user plane (UP) based security solutions due to differences in workflow and functionality, leading to incorrect selection and triggering of security procedures.
Innovation Solution
A solution that configures remote UE and relay UE with indicators for CP or UP based security procedures, enabling them to discover and select the correct relay UE supporting the same security solution and trigger the corresponding security workflow for communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If both CP and UP based security solutions are supported for ProSe communication via U2N relay, then security coverage is improved, but workflow complexity and management difficulty increase
Solution Approach 1:
The patent segments the security procedure selection by introducing separate indicators (first indicator for CP-based security, second indicator for UP-based security) that are independently configured and managed. This segmentation allows the system to handle multiple security solutions through structured, discrete configuration elements rather than a monolithic complex workflow.
Solution Approach 2:
The patent introduces indicators as intermediary elements that mediate between the security configuration and the actual security procedure execution. These indicators act as intermediaries that carry security procedure type information through the discovery and selection processes, simplifying the interaction between multiple security solutions and the overall system workflow.
2Reliability
If CP based security procedure is used, then authentication strength is improved, but discovery and selection process complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring and pre-announcing security procedure indicators before the actual discovery and selection processes begin. The relay UE announces supported security procedures in advance, and the remote UE has pre-configured indicator interpretation logic, eliminating the need for complex real-time analysis during discovery.
Solution Approach 2:
The patent uses indicator values (analogous to color changes) to visually and clearly distinguish between different security procedure types. The first indicator and second indicator use distinct value sets that clearly signal whether CP-based or UP-based security is required, making the discovery process simpler through clear, unambiguous signaling rather than complex negotiation.
3Measurement precision
If security indicators are configured for each relay service, then security procedure selection accuracy is improved, but configuration management complexity increases
Solution Approach 1:
The patent applies universality by designing the indicator configuration mechanism to serve multiple purposes: it announces relay service capabilities, enables discovery processes, guides selection decisions, and facilitates security procedure execution. This multi-functionality reduces the need for separate configuration mechanisms for each function, thereby managing complexity while maintaining accuracy.
Data Source
AI summary
Embodiments of the present disclosure relate to security communication in ProSe U2N relay. According to one aspect of the present disclosure, remote UE and relay UE receive a configuration comprising at least a set of indicators of a CP based security procedure or a UP based security procedure for a set of relay services. Based on an indicator for a relay service in the set of indicators, the remote UE and relay UE performs one of the CP based security procedure or the UP based security procedure for a communication between the remote UE and the relay UE for the relay service. In this way, remote UE and remote UE may correctly trigger a security procedure for U2N relay communication.