V2X Capability Announcement via Basic Safety Message
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Solution Overview
Problem
Existing V2X technologies face challenges in efficiently disseminating application-layer Vehicle-to-Everything (V2X) capabilities via sidelink communications, particularly in environments where not all vehicles support advanced features like Maneuver Coordination and Platooning.
Innovation Solution
The proposed solution involves identifying specific V2X message information elements that can be exchanged within Basic Safety Messages to inform other V2X entities about supported advanced features and their current invocation status, along with algorithms to efficiently initiate advanced features only with entities that support them.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If V2X entities broadcast all possible capability information to ensure complete awareness, then the completeness of capability information is improved, but the communication overhead and message size increase
Solution Approach 1:
The patent extracts only the necessary capability information elements from the complete capability set and includes them in the Basic Safety Message. This selective extraction approach ensures that essential capability data is communicated without transmitting unnecessary information, thereby reducing message size while maintaining completeness of relevant capability awareness.
2Measurement precision
If V2X entities exchange detailed capability information to enable precise matching for advanced features, then the precision of feature matching is improved, but the communication complexity and processing overhead increase
Solution Approach 1:
The patent performs preliminary action by pre-defining and pre-agreeing upon a standardized set of capability information elements that will be exchanged. This preliminary standardization enables precise feature matching without requiring complex real-time negotiation or processing, as both entities already understand the format and meaning of the exchanged capability data.
3Loss of time
If V2X entities transmit frequent capability announcements to maintain up-to-date awareness, then the timeliness of capability information is improved, but the energy consumption and network traffic increase
Solution Approach 1:
The patent implements periodic action by transmitting capability information elements at defined intervals within the Basic Safety Message broadcast cycle. This periodic transmission maintains up-to-date capability awareness among V2X entities while controlling energy consumption and network traffic, as transmissions occur only when necessary to maintain current information rather than continuously.
Data Source
AI summary
Aspects relate to sidelink transmissions directed towards vehicle-to-everything (V2X) applications. A UE may determine an application-layer capability of the UE in which the application-layer capability corresponds to a V2X application implemented on the UE, and transmit an announcement including an indication of the application-layer capability via a transceiver. A UE may also receive an announcement via a transceiver that includes an indication of an application-layer capability corresponding to a second UE in which the application-layer capability corresponds to a V2X application implemented on the second UE, and engage with the second UE via the V2X application.