Polar Code Sub-Block Interleaving for Lower Block Error Ratio
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current 5G mobile wireless communication systems face challenges in efficiently processing and transmitting control information and data due to limitations in existing coding schemes and processing mechanisms, particularly in extreme conditions like extreme Mobile Broadband, Ultra High Reliability and Low Latency Communications, and massive Machine Type Communications.
Innovation Solution
The implementation of polar encoding with sub-block wise interleaving and rate matching schemes, including repetition, puncturing, and shortening, to optimize the transmission of polar encoded bits, where specific interleaver patterns and rate matching strategies are used to enhance bit selection and error correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing coding schemes are used for transmission of control information and data, then the system maintains simplicity in coding structure, but the block error ratio performance deteriorates in extreme communication conditions
Solution Approach 1:
The patent divides the polar encoded bits into multiple sub-blocks and applies interleaving to specific subsets of these sub-blocks. This segmentation allows the system to improve reliability through selective interleaving without requiring complete interleaving of all bits, thus balancing performance improvement with complexity management.
Solution Approach 2:
The patent applies interleaving selectively to specific subsets of sub-blocks rather than uniformly to all encoded bits. This local quality approach optimizes error correction performance in critical regions while avoiding unnecessary complexity in other regions, resolving the contradiction between reliability improvement and complexity increase.
2Reliability
If sub-block wise interleaving is applied to all sub-blocks, then error correction performance improves, but processing complexity and computational overhead increase
Solution Approach 1:
The patent applies interleaving to specific subsets of sub-blocks rather than all sub-blocks. This partial action approach provides sufficient error correction performance for critical data while reducing the computational overhead and processing complexity compared to complete interleaving of all sub-blocks.
3Productivity
If rate matching schemes are implemented to optimize bit selection, then transmission efficiency improves, but the processing time and computational resources increase
Solution Approach 1:
The patent performs rate matching and bit selection operations before transmission, organizing the encoded bits into sub-blocks and applying interleaving in advance. This preliminary action allows the system to optimize transmission efficiency while managing processing time by completing complex operations before the actual transmission occurs.
Data Source
AI summary
Systems, methods, and instrumentalities are disclosed for interleaving coded bits. A wireless transmit/receive unit (WTRU) may generate a plurality of polar encoded bits using polar encoding. The WTRU may divide the plurality of polar encoded bits into sub-blocks of equal size in a sequential manner. The WTRU may apply sub-block wise interleaving to the sub-blocks using an interleaver pattern. The sub-blocks associated with a subset of the sub-blocks may be interleaved, and sub-blocks associated with another subset of the sub-blocks may not be interleaved. The sub-block wise interleaving may include applying interleaving across the sub-blocks without interleaving bits associated with each of the sub-blocks. The WTRU may concatenate bits from each of the interleaved sub-blocks to generate interleaved bits, and store the interleaved bits associated with the interleaved sub-blocks in a circular buffer. The WTRU may select a plurality of bits for transmission from the interleaved bits.