V2X Resource Selection via Terminal Movement Feedback
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Solution Overview
Problem
Current resource selection methods in new radio (NR) V2X communication fail to support aperiodic traffic effectively, as they rely on sensing-based approaches that are inaccurate due to varying packet arrival times and sizes, and cannot guarantee low latency in congested scenarios.
Innovation Solution
A method where a terminal device selects resources based on messages from other terminal devices, including geographical information, velocity, and movement direction, to determine suitable resources for V2X communication, allowing for dynamic resource allocation that adapts to changing conditions and meets stringent latency requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If sensing-based resource selection is used for periodic traffic, then collision avoidance is achieved, but it cannot support aperiodic traffic with varying packet arrival times and sizes
Solution Approach 1:
The patent applies dynamics by transitioning from static sensing-based resource selection (designed for periodic traffic) to a dynamic message-based approach that adapts to varying packet arrival times and sizes. The terminal device dynamically selects resources based on real-time movement information and message exchanges, enabling flexible support for aperiodic traffic patterns while maintaining reliable resource allocation through continuous information updates about geographical location, velocity, and movement direction.
2Loss of time
If sensing-based resource selection is used, then resource allocation is achieved, but latency cannot be guaranteed in congested scenarios
Solution Approach 1:
The patent implements feedback mechanisms where terminal devices exchange messages containing movement information (geographical location, velocity, movement direction) to enable dynamic resource selection. This feedback loop allows devices to adapt resource allocation based on real-time channel conditions and traffic patterns, reducing latency in congested scenarios by making informed decisions about resource usage without requiring complex centralized coordination.
3Adaptability or versatility
If message-based resource selection is implemented, then support for aperiodic traffic is achieved, but additional information exchange is required
Solution Approach 1:
The patent achieves universality by designing a message-based resource selection mechanism that handles multiple traffic types (periodic and aperiodic) through a unified approach. The same message exchange framework supports both traffic patterns, eliminating the need for separate mechanisms. The messages carry multiple types of information (geographical location, velocity, movement direction) that serve multiple purposes: resource selection, collision avoidance, and adaptability to varying traffic conditions, thereby managing overhead efficiently.
Data Source
AI summary
Embodiments of the present disclosure relate to methods, devices and computer readable mediums for resource selection. The method comprises: receiving, at a first terminal device, a message from a second terminal device, the message indicating information associated with vehicle-to-everything (V2X) communication during movement of the second terminal device; and determining, at least partially based on the message, a resource for the first terminal device to perform the V2X communication.