Transport Block Size Calculation With LDPC for 5G Throughput
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Solution Overview
Problem
In communication and broadcasting systems, link performance deteriorates due to channel noise, fading, and inter-symbol interference, necessitating a method to enhance data throughput and reliability, particularly in high-speed digital communication and broadcasting systems.
Innovation Solution
A method and apparatus for determining transport block size (TBS) using low-density parity-check (LDPC) codes, involving the identification of temporary information bits and code blocks based on control information for scheduling, with specific formulas for code rates to optimize TBS.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional TBS determination methods are used, then data transmission can be performed, but unnecessary bits are added and resource allocation is inefficient
Solution Approach 1:
The patent changes the parameter of TBS calculation by introducing a new formula that incorporates the actual number of information bits (K) and code rate (R) directly into the TBS determination process. This parameter change eliminates the need for adding unnecessary bits to meet fixed size requirements, thereby improving data throughput while reducing waste.
Solution Approach 2:
The patent implements dynamic TBS adjustment based on real-time channel conditions and traffic requirements. By making the TBS flexible rather than fixed, the system can optimize resource allocation for each transmission, improving overall productivity while minimizing unnecessary bit addition through adaptive sizing.
2Ease of manufacture
If TBS is optimized to reduce unnecessary bits, then resource allocation efficiency improves, but calculation complexity increases
Solution Approach 1:
The patent performs preliminary calculations of information bits and code rate parameters before final TBS determination. By preparing these values in advance through structured computation steps, the system simplifies the overall calculation process while maintaining optimization benefits, reducing the perceived complexity during actual transmission decisions.
3Reliability
If LDPC codes are used for error correction, then communication reliability improves, but system complexity increases
Solution Approach 1:
The patent segments the error correction process by integrating LDPC coding with the TBS determination mechanism. By dividing the overall communication system into coordinated segments (TBS calculation, LDPC encoding, transmission), the system achieves high reliability through LDPC while managing complexity through modular architecture and standardized procedures.
Data Source
AI summary
The present disclosure relates to a communication technique that combines, with IoT technology, 5G communication system for supporting a higher data transfer rate than a 4G system, and a system therefor. The present disclosure can be applied to intelligent services, such as smart homes, smart buildings, smart cities, smart cars or connected cars, health care, digital education, retail businesses, security and safety related services, etc. on the basis of 5G communication technologies and IoT related technologies. Disclosed, in the present invention, are a method and an apparatus for determining the size of a transport block in a communication or broadcasting system.