Adaptive Polar Coding Segmentation for Low-Rate Uplink Control
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Solution Overview
Problem
Polar coding in 5G communication technologies faces performance issues due to increased sequence lengths in uplink control information, particularly during low-bit-rate transmission, where direct coding reduces uplink control channel performance, and existing segmentation strategies are inflexible, leading to suboptimal results.
Innovation Solution
A method to determine a segmentation strategy for polar coding based on the length of the sequence to be encoded and the transmission code rate, deciding whether to segment the sequence, using predefined thresholds and functions to optimize performance, ensuring effective encoding for varying code rates and sequence lengths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the sequence to be encoded is segmented into two segments for polar coding, then the performance of the uplink control channel is improved, but the device complexity and processing overhead increase
Solution Approach 1:
The patent applies segmentation by dividing the sequence to be encoded into two segments when specific conditions are met (code rate ≤ 1/3 and sequence length > threshold). This segmentation improves uplink control channel performance by enabling separate encoding of different parts of the control information, thereby enhancing reliability without always increasing complexity through intelligent conditional application.
2Ease of operation
If a fixed segmentation strategy is adopted for all sequences, then the implementation is simplified, but the performance of the uplink control channel is reduced
Solution Approach 1:
The patent implements a dynamic segmentation strategy where the decision to segment or not segment the sequence depends on real-time conditions including code rate and sequence length. The base station determines segmentation based on whether the code rate is ≤ 1/3 and the sequence length exceeds a threshold, allowing the system to adapt to different transmission scenarios and optimize performance rather than using a fixed approach.
Solution Approach 2:
The patent changes the segmentation parameter dynamically based on code rate and sequence length parameters. When the code rate is ≤ 1/3 and sequence length > threshold, segmentation is applied; otherwise, direct encoding is used. This parameter-based adaptation resolves the contradiction by adjusting the segmentation state according to channel conditions.
3Device complexity
If direct polar coding is used for large sequences without segmentation, then the processing complexity is reduced, but the uplink control channel performance significantly decreases at low bit rates
Solution Approach 1:
The patent uses a dynamic approach where the coding method changes based on transmission conditions. For low bit rate scenarios (code rate ≤ 1/3) with long sequences, segmentation is activated to maintain performance. For other scenarios, direct polar coding is used to minimize complexity. This dynamic adaptation resolves the contradiction between complexity and performance.
Data Source
AI summary
A polarized coding method and apparatus, an electronic device, and a storage medium are disclosed. The method comprises: determining fragmentation policies corresponding to sequences to be coded according to the lengths of the sequences to be coded and transmission rates; and performing corresponding processing on the sequences to be coded according to the segmentation policies, and performing polarized coding on the processed sequences to be coded. In embodiments of the present invention, fragmentation policies corresponding to sequences to be coded are determined according to the lengths of the sequences to be coded and transmission rates; and corresponding segmentation polices are determined according to the to-be-coded sequences having different lengths and different transmission rates, thereby ensuring performance of an uplink control channel.