Sidelink Feedback Channel Format Selection for D2D Reliability
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Solution Overview
Problem
In Device to Device (D2D) communication, determining the appropriate sidelink feedback channel format for transmitting feedback information is necessary to improve transmission reliability, as existing methods lack a clear mechanism to select between short and long feedback channel formats based on specific conditions.
Innovation Solution
A method and apparatus for determining the sidelink feedback channel format, where a receiving device receives sidelink data and uses a feedback channel format indicator to determine the target format, and a transmitting device indicates the format, allowing for the selection between first and second sidelink feedback channel formats based on indicators, RNTIs, PSCCH formats, and slot gaps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the first sidelink feedback channel format is used, then the feedback transmission time is reduced, but the feedback transmission reliability deteriorates
Solution Approach 1:
The patent implements dynamic selection between first and second sidelink feedback channel formats based on real-time channel conditions, data priority, and resource availability. The determining module dynamically chooses the appropriate format rather than using a fixed format, allowing the system to adapt to varying conditions and optimize both transmission time and reliability according to current requirements.
2Reliability
If the second sidelink feedback channel format is used, then the feedback transmission reliability is improved, but the feedback transmission time increases
Solution Approach 1:
The patent changes the parameters of the feedback channel format selection based on multiple factors including channel quality indicators, data priority levels, and resource pool availability. By adjusting these parameters dynamically, the system can switch between formats to achieve optimal balance between reliability and transmission time for different operational scenarios.
3Reliability
If sidelink feedback channel is introduced, then the transmission reliability is improved, but the system complexity increases
Solution Approach 1:
The patent implements self-service mechanisms where the determining module autonomously selects the appropriate feedback channel format based on pre-configured criteria and real-time conditions without requiring complex external coordination. The system uses self-contained decision logic that evaluates channel conditions, data attributes, and resource status to make format selections, reducing the need for additional control infrastructure.
Data Source
AI summary
Embodiments of the present disclosure provide a method for determining a sidelink feedback channel, which is applied in the field of communication technologies. The method includes: receiving first sidelink data; and determining, based on a feedback channel format indicator, a target sidelink feedback channel format for transmitting feedback information for the first sidelink data.