Unequal Message Protection via Balanced Code Encoding
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Solution Overview
Problem
Current wireless communication systems face challenges in providing unequal message protection, where high-priority signals like alarm messages or system control messages require higher reliability than regular data, but existing methods consume additional channel resources and are not efficiently coded based on latency and error-rate considerations.
Innovation Solution
The implementation of a coding method that uses balanced codes, such as Manchester codes or codes isomorphic to Manchester codes, to differentiate between data and messages, allowing for higher reliability in transmitting messages by ensuring a maximal Hamming distance from codewords, thereby prioritizing high-priority signals without simultaneous transmission of unequally protected data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional channel resources are allocated for high-priority signals, then reliability of alarm messages is improved, but channel resource efficiency deteriorates
Solution Approach 1:
The patent applies local quality by assigning different protection levels to different types of data. High-priority alarm messages receive enhanced protection through balanced code encoding that ensures maximal Hamming distance from codewords, while regular data uses standard coding. This localized differentiation provides higher reliability for critical messages without applying the same resource overhead to all transmissions.
Solution Approach 2:
The patent changes the coding parameter structure by using balanced codes with specific properties (maximal Hamming distance from codewords) for high-priority messages. This parameter change in the encoding scheme allows the system to achieve higher reliability for alarm messages while maintaining efficient resource usage through the mathematical properties of balanced codes.
2Reliability
If balanced codes are used to differentiate data and messages, then reliability of high-priority signals is improved, but device complexity increases
Solution Approach 1:
The patent segments the data stream into high-priority alarm messages and regular data, applying different coding schemes to each segment. This segmentation allows the use of complex balanced codes only where necessary (for alarm messages) while using simpler standard coding for regular data, thereby managing device complexity through selective application.
Solution Approach 2:
The patent implements preliminary action by pre-defining the balanced code structure and its properties (maximal Hamming distance from codewords) before transmission. This preliminary preparation of the coding framework allows the system to achieve high reliability without requiring complex real-time processing decisions during transmission.
Data Source
AI summary
Input data may be coded in accordance with a coding method that allows for either coded data or messages to be transmitted with pre-determined, but unequal reliability over a communication channel. The coding method may allow the messages to be transmitted with higher reliability than the coded data. Messages may be transmitted when they are available. Otherwise, the coded data may be transmitted.