Sidelink Resource Selection via Base Station Intermediary
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Solution Overview
Problem
In sidelink communication, terminal devices struggle to select reliable resources due to unmonitored resources occupied by other devices, leading to interference and reduced communication reliability.
Innovation Solution
A resource selection method and apparatus that involves a first terminal indicating position information of multiple resources and performing resource reselection based on resource availability information from a second terminal, thereby reducing resource conflicts and improving communication reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If terminal device monitors resource usage of other user devices to select candidate resources, then resources with strong interference signals can be avoided, but resources occupied by other terminal devices cannot be monitored due to half-duplex restrictions, leading to resource conflicts
Solution Approach 1:
The patent introduces a base station as an intermediary that collects resource occupancy information from terminal devices and provides resource indication information to terminals. This mediator resolves the half-duplex monitoring limitation by centralizing the monitoring function at the base station, which can simultaneously receive from and transmit to multiple terminals without half-duplex constraints.
Solution Approach 2:
The base station performs preliminary monitoring and evaluation of resource occupancy before terminal devices need to make resource selection decisions. By pre-collecting resource usage information from multiple terminals and pre-evaluating interference levels, the base station provides ready-made resource recommendations that terminals can directly use, eliminating the need for terminals to perform complex real-time monitoring themselves.
2Device complexity
If terminal device selects resources from candidate resource set without monitoring all occupied resources, then resource selection process is simplified, but resources with high interference signal strength may be selected, reducing communication reliability
Solution Approach 1:
The base station acts as an intermediary that performs the complex task of evaluating resource interference levels for all terminals. Instead of each terminal independently analyzing interference from all other terminals (which would be complex and incomplete due to half-duplex), the base station centrally evaluates and provides simplified resource recommendations to each terminal.
Solution Approach 2:
The system implements feedback through the base station collecting resource occupancy information from terminals and providing resource indication information back to terminals. This closed-loop feedback mechanism ensures that terminals receive up-to-date resource recommendations based on current network conditions, improving reliability without increasing terminal complexity.
Data Source
AI summary
Provided are a resource selection method and apparatus, a resource indication method and apparatus, and terminals and a storage medium. The method includes: indicating position information of multiple resources, and performing resource reselection based on resource availability information, where the resource availability information is from the second terminal.