V2X Resource Overlap Handling via Symbol Skipping
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In V2X communication technologies, resource conflicts occur when a terminal device needs to send data and provide feedback on overlapping time domain resources, affecting the reliability of data and feedback information transmission.
Innovation Solution
A communication method where a first device determines how to send or receive data and control information by either sending/receiving data on a resource other than overlapping time domain symbols or discarding/skipping control information in overlapping symbols, ensuring reliable transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a terminal device sends data on multiple data channel time domain resources and provides feedback on a single PSFCH resource, then resource utilization is improved, but resource conflicts occur when data resources overlap with feedback resources
Solution Approach 1:
The patent segments the time domain resources by identifying overlapping regions between data channel resources and PSFCH resources. When overlap is detected, the terminal device separates data transmission and feedback reception in time by skipping the overlapping symbols, thus resolving the resource conflict while maintaining efficient resource utilization.
Solution Approach 2:
The terminal device performs preliminary detection to determine whether data channel time domain resources overlap with PSFCH time domain resources before transmission. Based on this preliminary assessment, the device proactively decides whether to skip overlapping symbols, preventing resource conflicts before they occur.
2Productivity
If a terminal device receives data on overlapping time domain symbols, then resource efficiency is improved, but feedback reception reliability deteriorates
Solution Approach 1:
The patent introduces dynamic resource handling where the terminal device adapts its reception behavior based on the detected overlap condition. When overlap is detected, the device dynamically adjusts by skipping overlapping symbols for feedback reception, thereby maintaining reliability while optimizing resource efficiency in non-overlapping scenarios.
Solution Approach 2:
The terminal device changes the reception parameter by selectively skipping overlapping time domain symbols. This parameter adjustment allows the device to exclude conflicted resources from feedback reception, ensuring reliable feedback reception on non-overlapping resources while maintaining overall resource efficiency.
3Reliability
If a terminal device prioritizes control information reception over data transmission, then feedback reliability is improved, but data transmission efficiency decreases
Solution Approach 1:
The patent applies local quality differentiation by treating overlapping and non-overlapping resources differently. In overlapping regions, the device prioritizes feedback reception by skipping data transmission. In non-overlapping regions, normal data transmission continues uninterrupted, thus maintaining overall data transmission efficiency while ensuring feedback reliability where conflicts occur.
Solution Approach 2:
The terminal device applies partial action by selectively skipping only the overlapping time domain symbols rather than abandoning entire data transmissions. This partial approach ensures feedback reliability on conflicted resources while minimizing the impact on overall data transmission efficiency by utilizing non-overlapping resources.
Data Source
AI summary
A communication method and apparatus are provided. The method may be applied to internet of vehicles, for example, V2X, LTE-V, or V2V, or may be applied to fields such as intelligent driving and an intelligent connected vehicle. The method includes: A first device determines a first resource and a second resource; and the first device sends or receives first data on a resource other than at least one time domain symbol on the first resource, and sends or receives control information on the second resource, when the first resource and the second resource overlap in the at least one time domain symbol; or the first device sends or receives first data on the first resource, and discards or skips receiving control information in at least one time domain symbol.