Sidelink Coordination Messaging for Resource Collision Avoidance
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Solution Overview
Problem
In sidelink communications, wireless devices face challenges in efficiently identifying and reserving resources to avoid collisions due to limited information about the availability of communication resources at other devices' locations, leading to potential transmission collisions.
Innovation Solution
A wireless device determines signal strength and priority information associated with sidelink communication resources and generates a message to share this information with another device, enabling it to select available resources and avoid collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If wireless devices determine resource availability independently without sharing coordination information, then device complexity is reduced, but resource collision probability increases
Solution Approach 1:
Wireless devices transmit coordination information containing resource availability indicators and signal strength measurements to other devices. This feedback mechanism enables receiving devices to adjust their resource selection decisions, reducing collisions while maintaining manageable device complexity through standardized message formats
Solution Approach 2:
Coordination information messages serve as an intermediary carrier between transmitting and receiving wireless devices. These messages convey resource availability data without requiring direct complex interaction between devices, enabling indirect coordination that reduces both collision probability and operational complexity
2Measurement precision
If wireless devices share detailed coordination information about resource availability, then resource selection accuracy is improved, but loss of information increases due to message overhead
Solution Approach 1:
The patent extracts only the essential coordination information elements needed for resource selection - specifically resource availability indicators and signal strength measurements - while omitting redundant data. This selective extraction maintains resource selection accuracy by including critical parameters while reducing message overhead by excluding unnecessary information
Solution Approach 2:
Signal strength measurements are converted into discrete resource availability indicators (available/unavailable) based on threshold comparisons. This parameter transformation reduces information overhead by converting continuous measurement data into discrete states while preserving sufficient accuracy for resource selection decisions
Data Source
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AI summary
Embodiments include systems and methods for sidelink communications. In embodiments, a processor of a wireless device may determine signal strength information and priority information associated with a sidelink communication resource. The processor may determine coordination information based on the determined signal strength information and priority information. The processor may generate a message to include the determined coordination information. The processor may transmit the generated message including the determined coordination information to a second wireless device. In some embodiments, the generated message may be a control message, such as a medium access control control-element (MAC-CE) or a sidelink control information message.