5G Transport Block Sizing With Limited-Buffer Rate Matching
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Solution Overview
Problem
Existing wireless communication systems face challenges in effectively determining the size of transport blocks, code blocks, and performing rate matching, particularly in 5G systems operating in mmWave bands, which affect data transmission efficiency and reliability.
Innovation Solution
A method and apparatus are provided to determine transport block sizes and code block sizes based on intermediate values and predetermined rules, using parameters like resource elements and LDPC parity check matrix indicators, and implementing limited buffer rate matching to optimize data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If transport block size is determined using conventional methods in 5G mmWave systems, then data transmission can proceed, but transmission efficiency and reliability are compromised due to inaccurate block size determination
Solution Approach 1:
The patent implements dynamic transport block size determination by comparing an intermediate value (calculated from resource elements, modulation order, and code rate) against a reference value to select between different determination methods. This dynamic adaptation allows the system to optimize block size accuracy for different transmission conditions, directly improving both measurement precision and productivity in 5G mmWave systems.
Solution Approach 2:
The patent changes key parameters (modulation order, code rate, resource element allocation) to determine the intermediate value, which then guides the selection of appropriate transport block size. By dynamically adjusting these parameters based on channel conditions and comparing against reference values, the system achieves more accurate block size determination, resolving the contradiction between precision and efficiency.
2Reliability
If rate matching is performed without limited buffer constraints, then more parity bits can be transmitted, but system reliability decreases due to excessive parity bits beyond buffer capacity
Solution Approach 1:
The patent applies preliminary constraints by determining the limited buffer size before rate matching occurs. The intermediate value calculation incorporates buffer size limitations, and the comparison with reference values ensures that rate matching is performed within acceptable boundaries. This preliminary action prevents excessive parity bit generation, maintaining reliability while managing complexity through structured constraints.
Solution Approach 2:
The patent introduces an intermediate value as a mediator between the raw calculation parameters and the final transport block size determination. This intermediate value, compared against a reference value, acts as a control mechanism that balances reliability requirements with buffer constraints, simplifying the rate matching process while ensuring reliable transmission within limited buffer capacity.
3Manufacturing precision
If code block size is determined without considering intermediate value comparisons, then determination process is simpler, but code block segmentation accuracy deteriorates
Solution Approach 1:
The patent implements dynamic code block size determination by comparing the intermediate value against a reference value to select between different determination approaches. This dynamic selection optimizes segmentation accuracy for different transmission scenarios, achieving high manufacturing precision in code block sizing while managing complexity through conditional logic based on intermediate value comparisons.
Data Source
AI summary
The disclosure relates to a 5G or pre-5G communication system for supporting a higher data transmission rate than that of a beyond-4th 4G communication system such as a LTE. The system transmits or receives data and control information in a wireless or communication system. An operation method of a terminal is provided. The operation method includes determining the number (NRE) of REs allocated to the terminal, determining an intermediate value based on the number of Res, when the intermediate value is smaller than a first reference value, determining the size of a transport block based on a predetermined first method and the intermediate value, or determining the size of the transport block based on the intermediate value and a plurality of predetermined values, and when the intermediate value is greater than the first reference value, determining the size of the transport block on the basis of the intermediate value.