Vehicle Network Resource Allocation via Cooperative Sensing
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Solution Overview
Problem
Existing vehicle network technologies face challenges in efficiently managing resource blocks at the edge of communication ranges, leading to suboptimal spectrum utility rates in vehicle-to-vehicle and vehicle-to-infrastructure communications.
Innovation Solution
A method for resource allocation in vehicle networks, where user equipment senses available resource blocks, generates resource indicators, combines them with neighboring devices' indicators to create a cooperative resource indicator, and sends it to a base station for dedicated resource assignment, optimizing resource usage and improving spectrum efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If user equipment at the edge of communication range uses independent resource block sensing and selection, then communication autonomy is improved, but spectrum utility rate deteriorates due to resource waste and lack of coordination
Solution Approach 1:
The patent combines independent resource sensing with cooperative resource indication by integrating the resource indicator field into Sidelink Control Information. This allows UE to maintain autonomous resource selection while coordinating with neighboring UE to share spectrum resources, thus improving spectrum utility rate without sacrificing communication autonomy.
Solution Approach 2:
The patent implements a feedback mechanism where UE sends resource indicators to neighboring UE through Sidelink Control Information. This feedback loop enables coordinated resource allocation at the edge of communication range, allowing UE to adjust resource selection based on neighboring UE's resource usage information, thereby improving spectrum efficiency while maintaining operational autonomy.
2Productivity
If centralized network manages resource blocks for all vehicles, then resource allocation efficiency is improved, but network coverage and flexibility deteriorate at edge regions
Solution Approach 1:
The patent segments resource allocation into two parts: centralized resource pool configuration by the network, and autonomous resource selection within that pool by individual UE. This segmentation allows the base station to manage overall resource efficiency while enabling edge UE to flexibly select resources independently, thus maintaining both allocation efficiency and edge coverage flexibility.
Solution Approach 2:
The patent enables dynamic resource selection where UE can autonomously choose resources from the configured pool based on current channel conditions and neighboring UE indicators. This dynamic approach allows edge UE to adapt to varying communication conditions while operating within the centrally managed resource framework, balancing efficiency and flexibility.
3Loss of energy
If resource blocks are shared between centralized and distributed networks, then spectrum utility rate is improved, but resource collision probability increases
Solution Approach 1:
The patent introduces resource indicators as an intermediary mechanism that mediates resource sharing between centralized and distributed networks. By encoding resource usage information in Sidelink Control Information and using it for coordinated selection, the system enables spectrum sharing while reducing collisions through informed resource avoidance, thus improving utility rate without significantly increasing collision probability.
Data Source
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AI summary
A method and a user equipment for resource allocation of vehicle network are provided. The method includes: sensing available resource blocks (RBs) to generate a first resource indicator labeling location information of the available RBs; receiving second resource indicators from neighboring devices in which the second resource indicators label location information of the available RBs sensed by the neighboring devices; combining the first resource indicator and the second resource indicators into a cooperative resource indicator and sending the cooperative resource indicator to a base station providing a centralized network; and receiving location information of a dedicated RB assigned by the base station according to the cooperative resource indicator and sending messages via the dedicated RB.