Dynamic Codebook Configuration for HARQ Feedback Efficiency
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Solution Overview
Problem
In wireless communication systems, when partial or all HARQ processes between network side devices and user equipment are configured not to transmit feedback information, there is information redundancy and resource wastage due to the use of semi-persistent code books.
Innovation Solution
Configuring the type of code book used for feedback information transmission as a dynamic code book, with a default value set to the dynamic code book, to avoid information redundancy and resource wastage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If semi-persistent code book is used for feedback information transmission, then feedback coverage is maintained, but information redundancy and resource wastage occur
Solution Approach 1:
The patent applies dynamics by making the code book type configurable and switchable between semi-persistent and dynamic types based on HARQ process requirements. The network device can dynamically select appropriate code book types for different HARQ processes, allowing the system to adapt feedback transmission to actual needs rather than using a fixed semi-persistent approach for all processes.
Solution Approach 2:
The patent implements local quality by allowing different HARQ processes to use different code book types. Specifically, HARQ processes that require feedback use semi-persistent code books while those that don't require feedback use dynamic code books or no feedback at all. This localized differentiation eliminates unnecessary feedback transmission for processes that don't need it.
2Reliability
If semi-persistent code book is used for feedback information transmission, then feedback transmission is maintained, but resource wastage increases
Solution Approach 1:
The patent applies partial action by selectively enabling feedback transmission only for HARQ processes that actually require it. Instead of maintaining semi-persistent feedback transmission for all HARQ processes (excessive action), the system uses dynamic code books or no feedback for processes that don't need feedback, achieving partial feedback transmission that matches actual requirements and reduces resource wastage.
3Loss of substance
If dynamic code book is configured as default, then information redundancy is reduced, but configuration complexity increases
Solution Approach 1:
The patent implements universality by making the code book type configuration applicable to multiple HARQ processes through a unified configuration mechanism. The network device can configure code book types for multiple HARQ processes using the same configuration parameters and procedures, reducing the overall configuration complexity despite the increased flexibility in selecting different code book types for different processes.
Data Source
AI summary
An electronic apparatus according to the present disclosure comprises a processing circuit configured to: if parts of HARQ processes between the electronic apparatus and a user equipment unit are configured to not send feedback information, configure a codebook type belonging to the user equipment unit and used to send feedback information to be a dynamic codebook or a semi-static codebook; and send to the user equipment unit information indicating the codebook type, wherein the electronic apparatus sets a default value of the codebook type to be a dynamic codebook, such that the user equipment unit determines the codebook type for sending feedback information to be the dynamic codebook if no information indicating the codebook type is received from the electronic apparatus.