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Delay-Oriented Roadside Unit Deployment for Highway Intersections in Vehicular Ad Hoc Networks.

Gan Luan^1,2, Zhenjia Chen^1,2, Chunyi Yue^1,2

¹School of Information and Communication Engineering, Hainan University, Haikou 570228, China.

Sensors (Basel, Switzerland)

|July 13, 2024

Summary

Optimizing roadside unit (RSU) deployment at highway intersections significantly reduces event reporting delays in vehicular ad hoc networks (VANETs). A novel probabilistic model and cooperative walking algorithm achieve superior performance over existing methods.

Keywords:

delay deployment highway intersection roadside unit vehicle-to-infrastructure communication vehicular ad hoc network

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Area of Science:

Computer Science
Electrical Engineering
Transportation Engineering

Background:

Vehicular ad hoc networks (VANETs) rely on roadside units (RSUs) for efficient communication.
Optimizing RSU deployment is crucial for enhancing network performance, particularly delay.
Existing RSU deployment strategies lack specific optimization for complex highway intersection environments.

Purpose of the Study:

To develop a novel RSU deployment strategy for highway intersections.
To minimize expected event reporting delays in VANETs at intersections.
To introduce a new algorithm for implementing the proposed deployment scheme.

Main Methods:

Developed a probabilistic model to characterize events around highway intersections.
Analytically determined expected event reporting delays for highway segments and intersections.
Proposed a new RSU deployment scheme and a cooperative walking algorithm for its implementation.

Main Results:

The proposed RSU deployment strategy significantly reduces event reporting delays at highway intersections.
The cooperative walking algorithm effectively implements the optimized RSU deployment.
Performance evaluation shows superiority over uniform deployment and balloon methods.

Conclusions:

The novel RSU deployment strategy effectively addresses the unique challenges of highway intersections.
The proposed method offers a significant improvement in delay performance for VANETs.
This research provides a practical solution for enhancing traffic safety and efficiency through optimized RSU placement.