Vehicle-to-X Message Weighting for Decoding Complexity Reduction
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Solution Overview
Problem
Current vehicle-to-X communication systems do not effectively reduce the decoding computation effort for user data portions, despite high production costs associated with the computing capacity required, as they primarily focus on reducing data security check computing power rather than decoding power.
Innovation Solution
A method where vehicle-to-X messages are weighted based on their header data portions, allowing only relevant messages to be decoded, with the header data being transmitted uncoded and user data being transmitted coded, and utilizing a weighting system to categorize messages as 'relevant' or 'irrelevant' to optimize computing power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If all user data portions of received vehicle-to-X messages are decoded, then complete information is obtained, but decoding computation effort and production costs increase significantly
Solution Approach 1:
The patent applies preliminary action by evaluating header data portions before decoding user data portions. The receiving device first extracts and assesses header information (such as message type, priority, source identification) to determine which messages warrant full decoding. This preliminary assessment prevents unnecessary decoding of irrelevant messages, thereby reducing computational effort while ensuring that only potentially relevant information undergoes expensive decoding operations.
Solution Approach 2:
The patent implements partial action by selectively decoding only the user data portions of messages that pass the header evaluation threshold. Instead of decoding all received messages in full, the system performs partial processing: header extraction for all messages, followed by complete user data decoding only for a subset of messages deemed relevant based on header criteria. This partial approach maintains essential information completeness while dramatically reducing overall decoding computation effort.
2Productivity
If header data is transmitted uncoded and user data is transmitted coded, then data transfer efficiency improves, but the system requires more sophisticated decoding strategies
Solution Approach 1:
The patent applies segmentation by dividing vehicle-to-X messages into distinct components: header data portions and user data portions. Header data is transmitted in an uncoded, easily parseable format that enables rapid initial assessment. User data portions are transmitted in coded format to conserve bandwidth. The receiving device separately processes these segments, first evaluating headers to determine relevance, then selectively decoding user data portions only when necessary. This segmentation strategy optimizes data transfer efficiency while managing decoding complexity through structured processing.
Data Source
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AI summary
The invention relates to a data selection method for reducing the decoding computational complexity of a vehicle-to-X communication system (401), wherein a communication unit (402) is used to transmit and receive vehicle-to-X messages (31), wherein the vehicle-to-X messages (31) each comprise at least one useful data portion (34) and at least one header data portion (32), wherein the at least one header data portion (32) in each case is transmitted in uncoded form, and wherein the at least one useful data portion (34) in each case is transmitted in coded form. The method is distinguished by the fact that received vehicle-to-X messages (31) are weighted into at least two categories on the basis of the at least one header data portion (32) in each case, wherein the at least one useful data portion (34) in each case is decoded on the basis of the weighting.