JISE


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Journal of Information Science and Engineering, Vol. 35 No. 5, pp. 1045-1060


Efficient RSU Placement Schemes in Urban Vehicular Ad Hoc Networks


SHIOW-FEN HWANG, WEI-CHEN CHEN, CHYI-REN DOW+ AND NHUT-LAM NGUYEN
Department of Information Engineering and Computer Science
Feng Chia University
Taichung, 407 Taiwan
E-mail: { sfhwang; crdow; lam}@mail.fcu.edu.tw; spadea21410@hotmail.com


Roadside units play a vital role in vehicular ad hoc networks. Essential benefits of roadside units include providing information about traffic jams, accidents, and emergency messages to drivers in real-time. Because roadside units are expensive, developing a method to deploy them cost-effectively is pertinent. In this paper, we propose a roadside unit placement method using a limit number of roadside units to cover the intersections in an urban vehicular ad hoc network. Our strategy focuses on identifying potential candidate locations to place roadside units and minimizing the number of roadside units to deploy. Simulation results show that the proposed method outperforms existing methods in terms of the number of roadside units being used and the communication coverage.


Keywords: vehicular networks, roadside units, isolated intersection, candidate locations, vertex cover

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