V2X Authorization in 5G AMF via Capability Indication
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Solution Overview
Problem
Current 5G and 5G/4G network architectures face challenges in efficiently managing authorization for Vehicle-to-Everything (V2X) communications, particularly in ensuring secure and efficient handover procedures across different communication interfaces and networks.
Innovation Solution
The implementation of a system architecture that includes V2X capability indication and authorization mechanisms within the network, utilizing protocols like PC5 reference points and network entities such as AMF and UDM to manage V2X communications, ensuring secure and authorized use of V2X services across various radio access technologies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If V2X authorization procedures are implemented in 5G networks, then security and control over V2X communications are improved, but network complexity and procedure overhead increase
Solution Approach 1:
The patent combines V2X authorization procedures with existing 5G network authentication mechanisms. The AMF (Access and Mobility Management Function) integrates V2X capability verification into the standard 5G authentication flow, eliminating separate authorization procedures and reducing procedural complexity while maintaining security.
Solution Approach 2:
The patent makes the AMF and UDM (Unified Data Management) serve multiple functions: traditional 5G authentication, V2X capability authorization, and communication interface management. This multi-functionality reduces the need for separate dedicated V2X authorization components, thereby reducing overall system complexity.
2Ease of operation
If V2X capability indication and authorization mechanisms are added to 5G networks, then control over V2X services is improved, but signaling overhead and network load increase
Solution Approach 1:
The patent performs V2X capability indication and authorization verification during the initial 5G network attachment or registration procedure. By completing authorization checks in advance (preliminarily), the network avoids repeated signaling during subsequent V2X communications, reducing ongoing signaling overhead.
Solution Approach 2:
The patent enables V2X devices to self-indicate their capabilities and authorization status through standardized 5G signaling mechanisms. The device autonomously provides its V2X capability information during registration, and the network automatically verifies authorization without requiring separate manual configuration or additional signaling messages for each V2X communication session.
3Stability of the object's composition
If seamless handover procedures are implemented across 5G and 4G networks, then communication continuity is improved, but authorization management complexity increases
Solution Approach 1:
The patent uses the AMF as a universal authorization manager that handles V2X authorization consistently across both 5G and 4G networks. The AMF maintains authorization context during handover, enabling seamless transitions while simplifying management through a single centralized authorization entity rather than separate network-specific authorization systems.
Solution Approach 2:
The patent implements feedback mechanisms where the network continuously monitors V2X communication status during handover procedures. The AMF receives status information and adjusts authorization decisions accordingly, ensuring continuous authorized access during transitions between 5G and 4G networks while maintaining control over V2X services.
Data Source
AI summary
Embodiments of Vehicle-to-everything (V2X) communications authentication are described. In some embodiments, a user equipment (UE) configured V2X communication and configured to operate within a fifth-generation system (5GS) and/or a combined 5GS and fourth-generation system (4GS) can encode a V2X capability indication in a request message for transmission to a network entity, such as a Access and Mobility Management Function (AMF). The V2X capability indication can indicate a capability of the UE for V2X communication over a PC5 reference point, and the request message can further include an indication of a Radio Access Technology (RAT). In some embodiments, the AMF can determine whether the UE is authorized to use the V2X communications over the PC5 reference point, and whether the UE is authorized to use the RAT indicated in the request message. Accordingly, the AMF can transmit a V2X services authorization to a next generation radio access network (NG-RAN).