Sidelink Coordination Information for Autonomous Resource Selection
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Solution Overview
Problem
In V2X communication systems, terminal devices in autonomous resource selection mode face inefficiencies due to continuous monitoring and resource wastage, leading to unnecessary interference without effective coordination solutions.
Innovation Solution
A communication method and apparatus that optimize resource selection by using coordination information to determine a resource set, including recommended, scheduled, and excluded sets, utilizing parameters like RSRP, CSI, location, and priority to enhance resource selection accuracy and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If terminal devices continuously and repeatedly perform monitoring in autonomous resource selection mode, then resource selection accuracy may be improved, but resource waste and interference increase
Solution Approach 1:
The patent introduces coordination information as an intermediary mechanism between terminal devices. This coordination information, which includes recommended resource sets, scheduled resource sets, and excluded resource sets, allows devices to share resource selection insights without continuous monitoring. The coordination information acts as a mediator that reduces the need for each device to independently and continuously monitor all resources, thereby improving resource selection accuracy while reducing resource waste and energy consumption.
2Reliability
If terminal devices continuously perform monitoring procedures, then coordination between devices may be improved, but signaling complexity and overhead increase
Solution Approach 1:
The patent extracts the essential coordination elements into a structured coordination information format. Instead of requiring continuous complex monitoring and signaling interactions, the system extracts key resource selection data into predefined sets (recommended, scheduled, excluded) that can be efficiently exchanged. This extraction simplifies the signaling complexity while maintaining coordination effectiveness between terminal devices.
3Speed
If terminal devices autonomously select resources without coordination, then resource selection speed is improved, but resource conflicts and interference increase
Solution Approach 1:
The patent implements preliminary action by having terminal devices share coordination information in advance, including recommended resource sets, scheduled resource sets, and excluded resource sets. This advance sharing allows devices to make informed autonomous resource selections without conflicts, maintaining fast resource selection speed while preventing interference through pre-coordinated resource allocation.
Data Source
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AI summary
A communication method and a communication apparatus are provided. The method may be applied to the communication field. The method includes: receiving coordination information, where the coordination information is used by a first sidelink device to determine a first resource set based on the coordination information, and the first resource set is used by the first sidelink device to send information on the first resource set; and determining that the coordination information includes one or more of the following information: information about a second resource set recommended to the first sidelink device, information about a third resource set scheduled to the first sidelink device, information about a fourth resource set expected to be excluded by the first sidelink device, a coordination parameter or a measurement result used by the first sidelink device to determine the first resource set, and indication information indicating the first sidelink device to determine the first resource set. A sidelink device that receives the coordination information can identify content of the coordination information, and therefore can perform a coordination procedure based on the identified content of the coordination information, to optimize the coordination procedure.