Uplink Code Block Segmentation With CRC-Aware Channel Coding
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Solution Overview
Problem
Current data transmission methods in wireless access systems are inefficient in error detection and correction, as they do not effectively consider the size of error detection codes when segmenting data into code blocks, leading to delayed error detection and complex error restoration processes.
Innovation Solution
A method of generating code blocks by attaching error detection codes to input bit sequences, calculating the optimal number and size of code blocks based on the size of error detection codes, and channel-coding these blocks to enhance data transmission efficiency and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data is segmented into code blocks without considering error detection code size, then data transmission can proceed, but error detection is delayed and error restoration becomes complex
Solution Approach 1:
The patent applies preliminary action by calculating the optimal number of code blocks in advance, considering the error detection code size before segmentation occurs. This pre-calculation ensures that error detection codes can be properly attached to each code block, enabling timely error detection and simplifying error restoration processes.
2Reliability
If the number of code blocks is increased to improve error detection coverage, then error detection capability improves, but transmission overhead and processing complexity increase
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the number of code blocks based on the error detection code size and data characteristics. This optimization ensures sufficient error detection coverage while minimizing processing complexity and transmission overhead.
3Reliability
If error detection code size is increased to improve detection accuracy, then error detection accuracy improves, but the available space for actual data transmission decreases
Solution Approach 1:
The patent applies parameter changes by optimizing the error detection code size based on data characteristics and transmission requirements. This ensures high error detection accuracy while maximizing the space available for actual data transmission.
4Measurement precision
If code block size is reduced to improve error detection granularity, then error detection precision improves, but the number of code blocks increases leading to higher overhead
Solution Approach 1:
The patent applies parameter changes by optimizing code block size based on error detection code size and data characteristics. This ensures high error detection precision while minimizing the number of code blocks and reducing transmission overhead.
Data Source
AI summary
A method of channel coding for transmitting data in a wireless access system includes: calculating a number C of code blocks by an equation of C=┌B/(Z−L)┐, wherein B denotes a size of an input bit sequence, wherein Z denotes a maximum size of the code blocks, and wherein L denotes a size of a cyclic redundancy check (CRC) which is to be attached to each of the code blocks; calculating a size B′ of a modified input bit sequence by an equation of B′=B+C*L; generating the code blocks based on the number C of the code blocks and the size B′ of the modified input bit sequence; and channel-coding the code blocks.