Polar Encoder Mapping for Unequal Protection of Multiple Payloads
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently transmitting multiple payloads with varying error protection requirements, as existing technologies do not effectively differentiate error protection levels for different priority payloads during transmission.
Innovation Solution
A method and apparatus that utilize a single polar encoder to jointly encode multiple payloads with unequal error protection, where higher priority payloads are encoded with higher reliability than lower priority payloads, ensuring smaller decoding errors for critical data while allowing larger errors for less critical data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single polar encoder is used to encode multiple payloads, then device complexity is reduced, but it becomes difficult to provide unequal error protection for different priority payloads
Solution Approach 1:
The patent applies local quality by mapping different payloads to different input positions of the polar encoder based on their priority levels. High-priority payloads are mapped to input positions that correspond to more reliable output bits, while low-priority payloads are mapped to positions corresponding to less reliable output bits. This creates localized differences in error protection quality within the unified encoder structure, resolving the contradiction between device simplicity and differentiated reliability.
2Reliability
If separate encoders are used for different payloads with different error protection requirements, then unequal error protection is achieved, but device complexity increases
Solution Approach 1:
The patent merges multiple encoding functions into a single polar encoder by implementing a unified mapping mechanism. Instead of using separate encoders for different payloads, the invention combines all payloads into one encoding process with a mapping module that directs different payloads to appropriate input positions based on their priority. This merging approach maintains unequal error protection while significantly reducing device complexity compared to using multiple separate encoders.
3Reliability
If higher reliability encoding is applied to all payloads, then decoding error is minimized, but transmission efficiency decreases due to excessive redundancy
Solution Approach 1:
The patent applies local quality by providing differentiated error protection levels for different payloads based on their priority. High-priority payloads receive stronger error protection through mapping to more reliable code positions, while low-priority payloads receive lighter protection. This localized differentiation optimizes the balance between reliability and transmission efficiency, avoiding the waste of applying maximum redundancy to all payloads uniformly.
Data Source
AI summary
The aspects described herein may enable an apparatus to jointly encode two or more payloads using a single polar encoder device, while providing unequal error protection for the payloads. The apparatus causes a polar encoder to polar encode a first payload and a second payload to generate a polar encoded codeword. The polar encoder is configured to encode one or more bits of the first payload at a first reliability level and encode one or more bits of the second payload at a second reliability level, where the one or more bits of the first payload are associated with a first priority level and the one or more bits of the second payload are associated with a second priority level. The apparatus transmits the polar encoded codeword.