V2X Resource Selection via Sensing and Interval Exclusion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In V2X technology, the current sensing-based resource selection mode for D2D signal transmission in high-density, high-speed environments like vehicle-to-vehicle communication does not consider transmission intervals, leading to resource collisions during subsequent data transmissions.
Innovation Solution
A user equipment is designed with a selection unit that chooses resource candidates based on sensing results from a first time window and transmission intervals, and a transmission unit that selects and transmits signals from these candidates, ensuring resource availability in a subsequent time window.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If user equipment autonomously selects transmission resources in V2X communication, then communication efficiency is improved and base station congestion is reduced, but resource collisions occur between multiple user equipments
Solution Approach 1:
The patent applies preliminary action by performing sensing operations in advance to identify and reserve transmission resources before actual data transmission occurs. User equipment senses the channel status and selects resources that are likely to be available, thereby preventing collisions before they happen. This is evident in the resource selection process where UEs perform sensing during a sensing window and reserve resources for future transmission based on detected channel conditions and other UE transmissions.
2Ease of operation
If user equipment selects resources without considering transmission intervals, then resource selection simplicity is maintained, but resource collisions occur during subsequent data transmissions
Solution Approach 1:
The patent applies parameter changes by incorporating transmission interval considerations into the resource selection process. Instead of selecting resources purely randomly or based on simple sensing, the system adjusts the selection criteria to account for the periodic nature of V2X transmissions. This involves evaluating resources at intervals that match the expected transmission periodicity, thereby maintaining relative simplicity while significantly improving collision avoidance for subsequent transmissions.
3Reliability
If dynamic resource allocation from base station is used, then resource collision is reduced, then base station control overhead increases and congestion occurs
Solution Approach 1:
The patent applies self-service by enabling user equipment to autonomously perform resource selection and reservation without continuous base station intervention. Each UE independently senses the channel, selects appropriate resources based on sensed information and transmission requirements, and reserves them for future use. This self-organizing approach eliminates the need for base station-controlled dynamic allocation, thereby reducing control overhead and base station congestion while maintaining reliable resource allocation through distributed intelligence.
Data Source
AI summary
A terminal is disclosed including a selection unit that selects first resource candidates for sidelink transmission based on monitoring in a sensing window, and specifies second resource candidates by excluding specific periodic resources that are reserved by another terminal from the first resource candidates; and a transmission unit that performs sidelink transmission using a resource selected from the second resource candidates. In another aspect, a transmission method executed by a terminal is also disclosed.