V2X Resource Reservation Using Shared Terminal Sensing
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Solution Overview
Problem
The details of information to be shared among terminals for improving communication quality in inter-terminal direct communication are not known, and the method of enhancing communication quality using this information is unclear.
Innovation Solution
A terminal is equipped with a receiver to receive information related to available resources from another terminal, a controller to identify and select candidate resources, and a transmitter to perform transmission using the selected resource in inter-terminal direct communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If terminals perform autonomous resource selection in D2D communication, then communication autonomy and base station load reduction are improved, but resource collision and communication quality deteriorate
Solution Approach 1:
Terminals perform sensing operations to detect resources already reserved by other terminals and use this feedback information to adjust their own resource selection, thereby avoiding collisions while maintaining autonomous operation
Solution Approach 2:
Terminals perform sensing operations in advance to identify and reserve resources before actual data transmission, ensuring resource availability and avoiding conflicts with other terminals
2Reliability
If terminals share resource information with other terminals, then resource collision is reduced and communication quality is improved, but information management complexity increases
Solution Approach 1:
Each terminal independently performs sensing operations to gather resource information from the environment and autonomously makes resource selection decisions based on this information, without requiring complex centralized coordination
Data Source
AI summary
A terminal includes a receiver that receives, from another terminal, information that is related to inter-terminal direct communication and is for identifying available resources; a controller that identifies candidate resources and selects a resource to be used, based on the information; and a transmitter that performs transmission in the inter-terminal direct communication using the selected resource.