NR Polar Code Block Segmentation for Large Payloads
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Solution Overview
Problem
Polar codes in New Radio (NR) wireless communication systems face increased complexity in encoding and decoding due to inherent code construction issues and inter-dependency, particularly with varying code size, which affects error correction performance for large payloads.
Innovation Solution
Implementing code block segmentation and interleaving techniques, such as CRC-aided list decoding, internal bit transmission, and dynamic CRC length configuration, to reduce complexity and enhance error correction capabilities for larger information payloads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If polar codes are used for error correction in NR wireless communication systems, then error correction capability is improved, but encoding and decoding complexity increases due to code construction issues and inter-dependency
Solution Approach 1:
The patent applies segmentation by dividing the polar code into multiple segments or blocks, where each segment can be encoded and decoded independently or with reduced inter-dependency. This segmentation reduces the overall complexity of the encoding and decoding processes while maintaining the error correction capabilities of polar codes across the entire message block.
2Quantity of substance
If code size N is increased to support larger payloads, then payload capacity is improved, but encoding and decoding complexity varies and increases with code size
Solution Approach 1:
The patent segments the large payload into multiple smaller code blocks, each with its own polar code of size N. This allows the system to support large overall payloads while keeping the complexity of individual encoding and decoding operations manageable, as each segment is processed separately rather than as one large block.
Solution Approach 2:
The patent employs dynamic code size adjustment where the code size N can be adapted based on the actual payload requirements and channel conditions. This dynamic approach allows the system to use smaller code sizes when possible to reduce complexity, while still supporting larger payloads by using multiple code blocks or increasing the number of segments when needed.
Data Source
AI summary
Techniques discussed herein facilitate polar coding and decoding for NR (New Radio) systems between UE(s) (User Equipment(s)) and/or gNB(s) (next generation Node B(s)) based on code block segmentation. One example embodiment employable at a UE comprises processing circuitry configured to determine one or more thresholds for code block segmentation, where the one or more thresholds for code block segmentation includes one or more of a payload threshold (Kseg) or a code rate threshold (Rseg); determine to perform code block segmentation based on the one or more thresholds and at least one of a current payload (K) of an information block or a current code rate (R) for the information block; segment the information block into a plurality of segments; and encode each segment of the plurality of segments via a polar encoder with a code size (N).