Indexing-Based Error Correction Feedback for Wireless Packets
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Solution Overview
Problem
Current wireless communication protocols are inefficient in correcting errors in transmitted packets, as they often require full retransmission of data due to single-bit feedback, which is not effective for packets with only a few errors, leading to unnecessary bandwidth usage and power consumption.
Innovation Solution
The method involves generating an error index that identifies error positions in received packets, allowing for targeted error correction through source and channel encoding, and iterative rounds of error correction, where the error index is transmitted instead of the entire packet, enabling efficient correction and reduced bandwidth usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If full retransmission is used for error correction, then reliability is improved, but bandwidth usage increases and power consumption increases
Solution Approach 1:
The patent extracts only the essential error correction information (error positions and values) from the full packet and transmits this extracted data as feedback. This allows the transmitter to correct errors using only the necessary information rather than retransmitting the entire packet, thereby reducing power consumption while maintaining reliability.
Solution Approach 2:
The patent segments the error correction process into distinct components: error detection at the receiver, generation of error index feedback, and error correction at the transmitter. This segmentation enables targeted correction of only the erroneous portions of the packet rather than complete retransmission, reducing energy waste.
2Reliability
If full retransmission is used for error correction, then reliability is improved, but bandwidth usage increases
Solution Approach 1:
The patent extracts only the essential error correction information (error positions and values) from the full packet and transmits this extracted data as feedback. This allows the transmitter to correct errors using only the necessary information rather than retransmitting the entire packet, thereby reducing bandwidth consumption while maintaining reliability.
3Device complexity
If single-bit feedback is used, then device complexity is reduced, but error correction precision deteriorates
Solution Approach 1:
The patent changes the parameter of feedback from single-bit to multi-bit feedback, where the feedback contains the actual error positions and values. This parameter change enables precise identification of error locations without requiring complex protocols, as the feedback directly carries the correction information needed.
Solution Approach 2:
The patent introduces an error index as an intermediary structure that bridges the simple feedback mechanism and precise error correction. The error index serves as a mediator that compactly represents error information, maintaining feedback simplicity while enabling accurate error position identification through structured indexing.
Data Source
AI summary
Indexing-based feedback codes and methods of use are disclosed herein. An example method includes determining error correction for a received packet having errors, generating an index of the error correction, the index including error positions for the errors in the received packet, and transmitting the index to a decoder receiver. The receiver using the index to correct the errors in the packet.