Cockpit Link Quality Measurement via Data Reception Feedback
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Solution Overview
Problem
In intelligent cockpit environments, channel fading due to blockage by seats or passengers leads to poor communication quality and efficiency, and existing methods for link quality measurement are complex and costly.
Innovation Solution
A data transmission method that involves a first control apparatus sending indication information to a second control apparatus to measure link quality with terminal devices, using data transmission to determine appropriate relay services, reducing complexity and cost by measuring link quality through data reception success rather than physical layer signal strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If physical layer signal strength measurement is used to measure link quality, then measurement precision is improved, but device complexity and cost increase
Solution Approach 1:
The patent replaces the physical layer signal strength measurement mechanism with a higher layer data transmission success measurement mechanism. Instead of using physical layer signal metrics that require specialized measurement capabilities, the system uses simple data transmission success/failure indicators at the application layer, thereby reducing device complexity while maintaining measurement functionality.
Solution Approach 2:
The patent employs simple, easily obtainable data transmission success indicators instead of complex, expensive physical layer measurement capabilities. The measurement relies on basic data reception confirmation mechanisms that are already present in standard communication protocols, eliminating the need for additional specialized measurement hardware or software.
2Measurement precision
If physical layer signal measurement capability is implemented, then link quality measurement precision is improved, but cost increases
Solution Approach 1:
The patent substitutes complex physical layer measurement hardware and software with simple data transmission success detection mechanisms that are inherently part of standard communication stacks. This replacement eliminates the need for expensive specialized measurement components while maintaining adequate measurement precision for relay node selection.
Solution Approach 2:
The invention uses inexpensive, readily available data reception confirmation mechanisms instead of costly physical layer measurement systems. The measurement approach leverages existing communication protocol features that require no additional hardware or software development, significantly reducing device manufacturing costs.
3Reliability
If relay service is implemented to overcome blockage, then communication quality is improved, but device complexity increases
Solution Approach 1:
The patent implements a self-service relay selection mechanism where terminal devices autonomously measure link quality and report to control apparatuses without requiring complex centralized coordination. The control apparatuses simply receive measurement results and select appropriate relay nodes based on pre-configured parameters, minimizing control logic complexity while achieving reliable communication through relay services.
Data Source
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AI summary
A data transmission method and apparatus provided in embodiments of this application help reduce complexity of link quality measurement, and are applied to the communication field, in particular, to short-range communication, for example, a cockpit domain. The method may include: A first control apparatus sends first indication information to a second control apparatus. The first indication information is used to indicate to measure link quality between the second control apparatus and at least one terminal device. The second control apparatus generates first data. The second control apparatus sends the first data to the at least one terminal device based on the first indication information. The first data is used to measure the link quality between the second control apparatus and the at least one terminal device. At least one first terminal device in the at least one terminal device sends feedback information to the first control apparatus. The feedback information of the first terminal device is used to indicate that the first terminal device successfully receives the first data.