D2D Transmission Resource Determination for High-Speed V2V Communications
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Solution Overview
Problem
Current technologies lack a solution for determining transmission resources for Device to Device (D2D) communication in Vehicle to Vehicle (V2V) and Vehicle to X (V2X) technologies, where conventional resource allocation methods are inapplicable due to high movement speeds of vehicle-mounted equipment.
Innovation Solution
Defining distance thresholds for transmission resource sets and determining target resource sets based on location and distance information between terminal equipment, allowing autonomous selection without pre-stored location-resource relationships, thereby reducing memory usage and minimizing frequent resource set changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If terminal equipment autonomously selects transmission resources based on pre-stored location-resource relationships, then resource allocation can be implemented, but memory resources are consumed and the system cannot adapt to high-speed movement scenarios
Solution Approach 1:
The patent changes the parameter basis from absolute location to relative distance. By calculating distance between first terminal equipment and other terminal equipment using location information, and comparing with distance thresholds, the system adapts to high-speed movement without requiring pre-stored location-resource mappings, thus reducing memory consumption while maintaining adaptability
Solution Approach 2:
The patent implements dynamic resource set selection based on real-time distance calculations. As terminal equipment moves, distances change dynamically, triggering automatic resource set reselection when distance thresholds are exceeded, enabling the system to adapt continuously to high-speed movement scenarios without static pre-configured data
2Productivity
If target transmission resource set is determined based on absolute location of terminal equipment, then resource allocation can be performed, but frequent resource set changes occur in high-speed movement scenarios, degrading communication quality
Solution Approach 1:
The patent changes the determination parameter from absolute location to relative distance. By calculating distance between terminal equipment and comparing with distance thresholds, the system reduces unnecessary resource set changes during high-speed movement, as distance-based determination is more stable than absolute location-based determination when GPS coordinates change frequently
Solution Approach 2:
The patent implements feedback mechanism where distance information is continuously calculated and compared with distance thresholds. When distance exceeds thresholds, resource set reselection is triggered; otherwise, current resource set is maintained, providing feedback-based stability that prevents frequent changes while ensuring appropriate resource allocation
3Ease of operation
If conventional resource allocation methods are used in V2V/V2X technology, then resource management can be implemented, but the methods are inapplicable due to high movement speeds of vehicle-mounted equipment
Solution Approach 1:
The patent transforms the resource allocation approach by changing from location-based to distance-based parameters. This enables resource management to work effectively in high-speed V2V/V2X scenarios where absolute location changes rapidly, but relative distances between vehicles provide stable basis for resource set selection
Solution Approach 2:
The patent segments the service area into multiple service area units with different distance thresholds. By dividing the communication environment into segmented zones, each with appropriate resource sets and thresholds, the system provides tailored resource management for different spatial relationships in high-speed movement scenarios
Data Source
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AI summary
The invention discloses a method and device for determining a transmission resource for device-to-device (D2D) communications and capable of enhancing D2D communication quality. The method comprises: determining a plurality of transmission resource sets, wherein each of the plurality of transmission resource sets comprises at least one transmission resource block and has a corresponding distance threshold; and determining, from the plurality of transmission resource sets, and according to current location information of first terminal equipment and distance thresholds of the plurality of transmission resource sets, a target transmission resource set for the first terminal equipment to perform D2D communication.