5G Feedback Timing for Multi-Slot Aggregation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In 5G systems, effectively performing feedback for data transmitted across multiple slots in slot aggregation remains a challenge, as existing technologies do not adequately address how to coordinate feedback timing across varying time units.
Innovation Solution
A wireless communications method that determines a second time unit based on the time domain location of first time units used for data transmission, allowing for the transmission of feedback information using this second time unit, ensuring timely and efficient feedback for data across multiple slots.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If feedback timing is coordinated for each slot individually, then feedback precision is improved, but system complexity increases due to varying time units across multiple slots
Solution Approach 1:
The patent combines multiple first time units into a single second time unit for feedback transmission. By determining one second time unit based on the time domain locations of multiple first time units, the system reduces the number of separate feedback transmissions needed while maintaining coordination across all slots, thereby reducing system complexity without sacrificing feedback precision
Solution Approach 2:
The second time unit serves as a universal feedback transmission resource that handles feedback for multiple different first time units simultaneously. This multi-functional approach allows a single time unit to coordinate feedback across varying time units of multiple slots, resolving the complexity issue while maintaining precision
2Loss of information
If feedback is transmitted for each first time unit separately, then feedback completeness is improved, but transmission overhead increases
Solution Approach 1:
Multiple feedback transmissions corresponding to different first time units are merged into a single feedback transmission in the second time unit. This combining approach maintains complete feedback information for all slots while reducing the total number of transmission resources required, thereby lowering transmission overhead without compromising feedback completeness
3Productivity
If feedback timing is optimized for single slot, then feedback efficiency is improved, but adaptability to multi-slot aggregation deteriorates
Solution Approach 1:
The patent implements a dynamic feedback timing mechanism where the second time unit is flexibly determined based on the time domain locations of multiple first time units. This dynamic approach allows the system to adapt to varying slot configurations and aggregations while maintaining efficient feedback timing, thus improving both feedback efficiency and multi-slot adaptability simultaneously
Data Source
Figure 1~3
Figure 4~6
Figure 7~8
AI summary
Provided in the embodiments of the present application are a wireless communication method and communication device, capable of realizing feedback aiming at data of a plurality of time units. The method comprises: determining a second time unit according to a time domain position of at least one first time unit in a plurality of first time units used for transmitting data; and transmitting feedback information by using the second time unit, wherein the feedback information is feedback information aiming at the data transmitted on the plurality of first time units.