Code Block Group Feedback for Control Signaling Overhead Reduction
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Solution Overview
Problem
Current communication systems face inefficiencies due to excessive control signaling overhead and reduced demodulation performance when transmitting feedback information for large transport blocks, leading to decreased system efficiency.
Innovation Solution
A method and device that determine an appropriate amount of feedback information by calculating the number of code block groups within a transport block, allowing for reduced control signaling overhead and improved demodulation performance by sending specific quantity information between network and terminal devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If feedback information is sent for each code block in a transport block, then decoding reliability is improved, but control signaling overhead increases excessively
Solution Approach 1:
The transport block is divided into multiple code block groups, and feedback is provided at the code block group level rather than individual code block level. This segmentation approach maintains decoding reliability by providing granular feedback while reducing the total amount of feedback signaling required when a transport block contains a large number of code blocks.
2Measurement precision
If feedback information for each code block is transmitted, then transmission accuracy is improved, but system efficiency deteriorates due to reduced demodulation performance
Solution Approach 1:
By segmenting feedback into code block group level rather than individual code block level, the patent maintains sufficient transmission accuracy for error correction while reducing control signaling overhead, thereby improving demodulation performance and overall system efficiency.
3Reliability
If detailed feedback information is provided for each code block, then error detection capability is improved, but control signaling complexity increases
Solution Approach 1:
The patent segments the feedback mechanism into code block groups, maintaining error detection capability at the group level while significantly simplifying control signaling complexity. This approach avoids the excessive complexity that would result from individual code block feedback when transport blocks contain many code blocks.
Data Source
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AI summary
The present application provides a method and a device for transmitting information. The method includes: the terminal device determining first quantity information, wherein the first quantity information is information about a number of code block groups comprised in a transport block, and each code block group comprises at least a code block; the terminal device determining second quantity information, wherein the second quantity information is information about a total number of bits comprised in a scheduled transport block; and; the terminal device determining information about code block groups comprised in the scheduled transport block according to the first quantity information and the second quantity information. The method for transmitting information provided by the present application can determine an appropriate amount of feedback information, reduce control signaling overhead, improve demodulation performance of control signaling, and improve system efficiency.