Communication Device Code Block Grouping for Error Rate Uniformity
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Solution Overview
Problem
In radio communication systems, the error rate of transport blocks or code block groups is high due to inadequate consideration of error rates during encoding, leading to inefficient transmission and retransmission control.
Innovation Solution
The error rate of transport blocks or code block groups is reduced by parameter setting to achieve uniformity among code blocks, using demodulation reference signals (DMRS) to optimize channel estimation accuracy and resource allocation, thereby improving encoding rates and reducing errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If control related to encoding is performed without considering error rate of each code block, then device complexity is reduced, but error rate of transport block or code block group increases
Solution Approach 1:
The patent applies local quality by differentiating error rate characteristics among code blocks within the same transport block. Specifically, code blocks are categorized into different groups based on their error rates, with some code blocks having higher error rates (e.g., those mapped to later time slots or experiencing worse channel conditions) and others having lower error rates. This localized differentiation enables targeted encoding control strategies for different code block groups, improving overall reliability without uniformly increasing complexity across all code blocks.
Solution Approach 2:
The patent changes encoding parameters based on error rate characteristics of different code block groups. By adjusting encoding rates, modulation schemes, or resource allocation parameters according to the specific error rate conditions of each code block group, the system optimizes the balance between reliability and complexity. For example, code blocks with higher error rates may receive more robust encoding or additional redundancy, while those with lower error rates use standard encoding.
2Reliability
If uniform encoding control is applied to all code blocks, then device complexity is reduced, but error rate uniformity across code blocks deteriorates
Solution Approach 1:
The patent implements local quality by creating distinct encoding control mechanisms for different code block groups based on their error rate characteristics. Instead of applying uniform encoding control, the system identifies code blocks with systematically different error rates (such as those positioned at different time slots or frequency resources) and applies differentiated encoding strategies to each group, thereby achieving error rate uniformity across the transport block while managing complexity through structured grouping.
Solution Approach 2:
The patent segments the transport block into multiple code block groups with different error rate characteristics. By dividing the code blocks into distinguishable groups (e.g., first code block group with higher error rates, second code block group with lower error rates), the system can apply specific encoding control to each segment. This segmentation enables targeted improvement of error rate uniformity without requiring individual control of every code block, thus managing overall complexity.
Data Source
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AI summary
There is provided a communication device that communicates with another communication device, the communication device comprising: an arranging unit configured to arrange a demodulation reference signal and a group including a plurality of code blocks in a radio frame; and a transmitting unit configured to transmit the radio frame to the other communication device, wherein the plurality of code blocks are arranged in the radio frame based on a position of the demodulation reference signal in the radio frame.