Echo-Based Communication Method for Data Integrity Verification
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Solution Overview
Problem
Existing communication systems lack robustness for safety-critical applications, particularly in ensuring data integrity and reliability in real-time communication, such as in motor vehicles, where immediate verification and redundancy are crucial.
Innovation Solution
A communication method and system that includes a message structure with redundant check information, using cyclic redundancy checks (CRC) and redundant data transmission, where the first communication unit sends a message with address and command information, and the second unit responds with derived check information, ensuring data integrity through immediate verification and redundancy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If check information is added to messages for data verification, then data integrity and reliability are improved, but message complexity and data transmission overhead increase
Solution Approach 1:
The check information is calculated and attached to the message before transmission. The receiver then verifies the integrity of the received message using the same check information, ensuring data integrity is established in advance of any potential errors occurring during transmission.
Solution Approach 2:
The check information acts as a feedback mechanism where the receiver sends back verification information to the sender. This feedback loop allows the sender to verify whether the data was transmitted correctly, enabling error detection and correction in the communication process.
2Reliability
If redundant data transmission is implemented, then reliability and error detection capability are improved, but transmission time and bandwidth consumption increase
Solution Approach 1:
The receiver immediately responds with check information after receiving each message. This immediate feedback mechanism allows for rapid error detection without requiring redundant retransmission of entire data blocks, thus improving reliability while minimizing time loss compared to traditional retransmission protocols.
Solution Approach 2:
Instead of using mechanical retransmission of entire messages upon error detection, the system uses lightweight check information (such as checksums or CRC values) to verify data integrity. This substitution of full retransmission with lightweight verification reduces transmission time and bandwidth consumption while maintaining high reliability.
Data Source
AI summary
Communication method in a communication system comprising a first communication unit (A) and a second communication unit (B) which are connected to one another via at least one first communication path, wherein the first communication unit (A) transmits at least one first message or a first command (1) to the second communication unit (B), which message or command comprises at least one item of address information (ADDR) according to which the second communication unit (B) transmits a first response message (2, 3, 4, 5) to the first communication unit in response to the first message or the first command, wherein this first response message (2, 3, 4, 5) comprises at least one item of data information (DAT) and additionally the address information relating to the first command itself (ADDR) or an item of information (CRC) derived from this address information.