Sidelink Resource Coordination Using SCI Recommendations
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Solution Overview
Problem
Existing V2X systems do not allow one User Equipment (UE) to indicate sidelink (SL) transmission resources to another UE, leading to potential communication delays or failures due to the selection of unavailable resources.
Innovation Solution
A method and apparatus for indicating sidelink coordinated resources, where a coordinating UE determines and transmits recommended or non-recommended resources to requesting UEs using Sidelink Control Information (SCI), ensuring appropriate resource selection for SL communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UEs independently select SL transmission resources without coordination, then device complexity is reduced, but communication reliability deteriorates due to selection of unavailable resources
Solution Approach 1:
The patent introduces a coordinating UE as an intermediary that receives resource coordination requests from requesting UEs, determines recommended or non-recommended resources, and transmits this information back to the requesting UEs. This mediator approach resolves the contradiction by centralizing the complex resource coordination function, thereby improving communication reliability without requiring all UEs to independently manage complex resource coordination logic.
2Reliability
If resource coordination information is transmitted for multiple requesting UEs using different PSCCHs, then communication reliability is improved, but signaling overhead increases
Solution Approach 1:
The patent allows the coordinating UE to transmit resource coordination information for multiple requesting UEs using the same PSCCH. By merging the signaling resources, the system reduces overall signaling overhead while maintaining reliable resource coordination. The resource coordination information includes identifiers that allow each requesting UE to identify its specific coordination information within the shared signaling channel.
3Manufacturing precision
If resource coordination requests are processed individually for each requesting UE, then resource allocation precision is improved, but processing time increases
Solution Approach 1:
The coordinating UE determines recommended or non-recommended resources in advance based on the resource coordination request, before the requesting UE needs to make its final resource selection. This preliminary determination of resource suitability allows the requesting UE to quickly select from pre-evaluated options, reducing the time required for resource coordination while maintaining precise resource allocation.
Data Source
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AI summary
A sidelink coordination resource indication method and apparatus, a storage medium, and a terminal. The method comprises: receiving a resource coordination request sent by a requesting UE, and determining a recommended/non-recommended resource according to the resource coordination request; and generating resource auxiliary SCI according to the recommended/non-recommended resource, and sending the resource auxiliary SCI to the requesting UE, so that the requesting UE determines, according to the resource auxiliary SCI, a resource for sending data to another UE. By using the described method, resources used for sidelink communication among UEs can be coordinated, and communication latency or failure can be prevented.