Forecast V2X Message Generation for Latency Reduction
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Solution Overview
Problem
Vehicle-to-X (V2X) systems face challenges in meeting latency requirements for broadcasting messages, as existing signing algorithms consume significant resources and extend latency times, especially when event-triggered messages need to be signed quickly after periodic messages.
Innovation Solution
A device that forecasts anticipated events to generate 'forecast' V2X messages with partially filled data fields, allowing for reduced resource usage while ensuring compliance with latency requirements, by using a computing apparatus to predict events and generate messages chronologically before their occurrence, which can then be signed and broadcast efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If signing algorithms are used to ensure message authenticity, then security is improved, but latency time increases significantly
Solution Approach 1:
The system pre-generates forecast V2X messages with forecast data before actual events occur, and pre-signs these messages in advance. This preliminary action allows the signed messages to be immediately transmitted when events occur, eliminating the time-consuming signing process during critical latency periods while maintaining security through pre-applied signatures.
2Loss of time
If extensive computing resources are allocated for signing, then latency requirements are met, but resource outlay increases
Solution Approach 1:
The system creates forecast V2X messages as simplified copies or predictions of actual event messages, filled with forecast data that mimics the structure and format of real messages. These forecast messages can be processed and signed with reduced computational resources compared to processing actual real-time event messages, thereby meeting latency requirements without requiring extensive computing resources.
3Ease of operation
If messages are signed in order of planned broadcast, then processing is systematic, but event-triggered message latency increases
Solution Approach 1:
The system performs preliminary signing of forecast V2X messages before actual events occur. When an event triggers a message broadcast, the corresponding signed forecast message is already prepared and can be transmitted immediately without waiting for the sequential signing process, thus breaking the dependency on systematic processing order while maintaining it for non-critical messages.
Data Source
AI summary
A device for vehicle-to-X (V2X) communication, including a computing apparatus for data processing and a generating apparatus for generating vehicle-to-X messages by a protocol stack. The computing apparatus is configured to forecast an anticipated event triggering the broadcasting of a V2X message and to produce data forecast on the basis of the anticipated event and to provide the same to the generating apparatus for generating a forecast vehicle-to-X message. A corresponding method as well as the use of the device in a vehicle is also disclosed.