V2X Sidelink Resource Set Signaling for DRX-Aware Selection
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Solution Overview
Problem
The existing resource selection process in the second transmission mode of the Side Link (SL) in V2X communication faces issues such as the hidden node problem, half-duplex problem, and high power consumption due to continuous resource listening, which affect communication reliability and efficiency.
Innovation Solution
A coordination mechanism between User Equipments (UEs) is introduced, where one terminal sends a resource set to another for improved resource selection, considering the DRX state to minimize power consumption and reduce interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If continuous resource listening is performed for resource selection, then resource selection accuracy is improved, but power consumption increases
Solution Approach 1:
The patent applies periodic action by implementing Discontinuous Reception (DRX) cycles where the terminal alternates between active listening periods and sleep periods. During DRX on-duration, the terminal performs resource listening and receives resource set information; during DRX off-duration, the terminal enters sleep mode to conserve energy. This periodic operation pattern resolves the contradiction by maintaining resource selection accuracy during active periods while significantly reducing power consumption during sleep periods.
2Use of energy by moving object
If resource set information is sent during DRX off-duration, then power consumption is reduced, but resource selection accuracy deteriorates due to invalid resources
Solution Approach 1:
The patent applies preliminary action by having the first terminal determine and send the resource set information in advance, before the second terminal needs to perform resource selection. The resource set is determined based on the first terminal's DRX state, ensuring that only valid resources (those corresponding to active DRX periods) are included. This preliminary determination and transmission of accurate resource information resolves the contradiction by enabling the second terminal to make accurate resource selections without needing to continuously listen, thus reducing its power consumption while maintaining accuracy.
3Reliability
If coordination mechanism between terminals is introduced, then communication reliability is improved, but device complexity increases
Solution Approach 1:
The patent applies the intermediary principle by using pre-determined resource set information as a mediator between the first terminal's DRX state and the second terminal's resource selection process. Instead of requiring complex real-time coordination and continuous communication between terminals, the resource set information serves as a pre-computed intermediary that guides the second terminal's resource selection. This reduces device complexity by replacing complex coordination protocols with simpler information-based coordination, while still improving communication reliability through optimized resource allocation.
Data Source
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AI summary
The present application relates to the field of mobile communications. Disclosed are an information sending method and apparatus, and a terminal and a storage medium. The method comprises: a first terminal determining a time range, determining a resource set according to the time range, and sending the resource set to a second terminal in a target time unit, wherein the resource set is used to assist the second terminal with resource selection. In the present application, a first terminal determines a rational time range, and determines, on the basis of the time range, a resource set suitable for the first terminal or not suitable for the first terminal, thereby ensuring that there are no invalid resources in resources sent to a second terminal or that the number of invalid resources is reduced. When the first terminal uses a DRX mechanism, cooperation between the first terminal and the second terminal can be better implemented.