Resource Selection Method for V2X Sidelink Collision Avoidance
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Solution Overview
Problem
The current LTE sidelink system lacks a defined resource reservation rule, leading to inaccurate resource selection and potential resource collisions among terminals, which compromises data transmission reliability, especially in scenarios requiring strict Quality of Service (QoS) like vehicle-to-everything (V2X) communications.
Innovation Solution
A resource selection method is introduced where terminals perform resource reservation or sensing based on predefined, preconfigured, or dynamically configured resource reservation rule information, ensuring consistent understanding and accurate exclusion of reserved resources to prevent collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If no resource reservation rule is defined, then the system has simpler structure and easier implementation, but resource selection becomes inaccurate causing resource collisions
Solution Approach 1:
The patent applies preliminary action by defining resource reservation rules in advance before resource selection occurs. The rules are pre-configured to specify how terminals should identify and reserve resources, ensuring that all terminals follow the same reservation logic. This prevents resource collisions by establishing clear, predetermined guidelines for resource allocation before the actual selection process begins.
2Adaptability or versatility
If different terminals have different understandings during sensing, then each terminal can independently sense resources, but resource collision occurs due to inaccurate resource exclusion
Solution Approach 1:
The patent applies local quality by tailoring resource reservation rules to specific local conditions and scenarios. Different types of communication scenarios (e.g., broadcast, unicast, multicast) have different reservation rule configurations. This allows each terminal to apply the appropriate local rules based on its specific communication needs while maintaining overall system consistency, thereby preventing resource collisions without compromising terminal independence.
3Ease of manufacture
If resource reservation mechanism is implemented without specific rules, then the mechanism is simpler to implement, but data transmission reliability deteriorates due to resource collisions
Solution Approach 1:
The patent applies parameter changes by modifying key parameters of the resource reservation mechanism, such as reservation time windows, resource exclusion criteria, and selection criteria. These parameter adjustments transform the simple reservation mechanism into a rule-based system that maintains implementation simplicity while significantly improving data transmission reliability by preventing resource collisions through precise parameter-controlled resource management.
Data Source
AI summary
A resource selection method and a terminal are provided. The resource selection method includes: when a target SCI indicates resource reservation, performing resource reservation or resource sensing based on resource reservation rule information.