Preferred Resource Sets for Autonomous Sidelink Coordination
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Solution Overview
Problem
Existing sidelink communication in next-generation radio access networks faces challenges in efficiently multiplexing radio resources without collisions, particularly in scenarios where base station scheduling is not involved, such as vehicle-to-everything (V2X) services.
Innovation Solution
The proposed solution involves transmitting and receiving coordination information between user equipments (UEs) to facilitate efficient resource allocation, including preferred and non-preferred resource sets, and conflict information, to avoid collisions in sidelink communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple terminals perform sidelink communication without base station scheduling, then communication flexibility and autonomy are improved, but resource collision and interference increase
Solution Approach 1:
The patent applies preliminary action by having terminals perform sensing operations before resource selection to identify and avoid resources that may cause collisions. The terminal senses the channel status in advance, selects resources that are less likely to collide, and then transmits coordination information to further refine resource allocation, thereby preventing collisions before they occur.
Solution Approach 2:
The patent implements feedback mechanisms where terminals transmit coordination information containing resource conflict information, preferred resource sets, and non-preferred resource sets to other terminals. This feedback loop allows terminals to adjust their resource selection based on observed channel conditions and other terminals' resource usage, continuously improving resource allocation efficiency and reducing collisions.
2Productivity
If coordination information transmission is enabled between UEs, then resource allocation efficiency is improved, but communication overhead increases
Solution Approach 1:
The patent extracts only the essential coordination information needed for resource allocation, specifically resource conflict information, preferred resource sets, and non-preferred resource sets. By taking out only the necessary elements rather than transmitting complete resource allocation data, the patent reduces communication overhead while maintaining resource allocation efficiency.
Solution Approach 2:
The patent applies local quality by transmitting coordination information selectively between terminals that have actual resource allocation needs and potential conflicts. Rather than universal information exchange among all terminals, the coordination information is transmitted locally between relevant terminals, reducing overall communication overhead while maintaining allocation efficiency where needed.
Data Source
AI summary
Provided are methods and apparatuses for transmitting and receiving coordination information for sidelink communication. The method includes: enabling transmission and reception of coordination information between the user equipments; configuring the coordination information including information on a preferred resource set or a non-preferred resource set for the transmitting user equipment or resource conflict information; and transmitting the coordination information.