V2P Direct Link Security Using Dynamic Root Key Identifiers
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Solution Overview
Problem
Existing V2X communication systems lack effective methods for secure vehicle-to-pedestrian communication, particularly in managing direct links and key identifiers for ensuring secure data exchange between vehicles and pedestrians.
Innovation Solution
The implementation of methods and apparatus for V2P communication that involve an initiating wireless transmit/receive unit (WTRU) to send and receive security information associated with key identifiers, allowing for secure release and management of direct links with peer WTRUs using root keys.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If direct links are established between vehicles and pedestrians for V2P communication, then communication capability is improved, but security management complexity increases
Solution Approach 1:
The security management system is segmented into multiple key identifiers (first key identifier, second key identifier) that can be independently managed and applied to different communication scenarios. This allows the system to handle complex security requirements by breaking down the security management into manageable segments rather than using a single unified security mechanism.
Solution Approach 2:
The patent implements dynamic key identifier management where the system can switch between different key identifiers based on communication needs. The initiating WTRU can determine whether to use the first or second key identifier for securing communications, allowing flexible adaptation to different security requirements while maintaining manageable complexity.
2Reliability
If multiple key identifiers are used for secure communication, then security is improved, but information exchange complexity increases
Solution Approach 1:
The patent performs preliminary actions by establishing multiple key identifiers before actual communication occurs. The system pre-configures the first and second key identifiers and their associated security parameters, so that when communication needs arise, the appropriate key can be selected without complex real-time decision-making, thus reducing information exchange complexity during actual communication.
Solution Approach 2:
The patent uses key identifiers as intermediaries to manage security. Rather than directly managing complex security protocols between vehicles and pedestrians, the system introduces key identifiers as intermediary elements that simplify the security exchange process. The initiating WTRU determines which key identifier to use based on communication requirements, acting as an intermediary decision layer.
3Reliability
If direct link release is implemented for security management, then security control is improved, but communication interruption risk increases
Solution Approach 1:
The patent changes security parameters by switching between different key identifiers rather than completely releasing and re-establishing connections. The system can modify the security parameter (key identifier) being used while maintaining the underlying communication link, thus achieving security control without necessarily causing communication interruptions.
Data Source
AI summary
V2X Enhancements to support V2P communication are disclosed. In particular, Vehicle to Pedestrian Communications are provided. Methods and apparatus for direct link with a peer WTRU using a first key identifier of a root key are provided. In an embodiment, a method includes sending, by the initiating WTRU to the peer WTRU, a release request message to release the direct link with the peer WTRU, the release request message including information indicating first security information associated with a second key identifier of the root key. The method further includes receiving a response to the release request message including second security information associated with the second key identifier of the root key. The method also includes determining the second key identifier of the root key using the first security information and the second security information; and sending a message including information indicating the second key identifier of the root key.