Optimal Connectivity-Based Deployment of Roadside Units for Vehicular Networks in Urban Areas. Issue 1 (2016)

• Record Type: Journal Article
• Authors: Ou, Dongxiu; Yang, Yuchen; Xue, Lixia; Dong, Decun
• Is Part Of: Transportation research record. Volume 2559:Issue 1(2016)
• Page Start: 46
• Page End: 56
• Publication Date: 2016
• Subjects: Transportation -- Periodicals; Roads; Transport -- Périodiques; Routes -- Périodiques; Routes -- Conception et construction -- Périodiques; Roads; Transportation; 388.05
• DOI: 10.3141/2559-06
• Languages: English
• ISSNs: 0361-1981

Abstract

The vehicular ad hoc network (VANET) is an emerging and promising technology for on-road applications in road safety and traffic efficiency. Temporal network fragmentation may occur as a result of vehicle mobility uncertainties and impact communication connectivity. The roadside unit (RSU) has been considered to support vehicle-to-infrastructure (V2I) and vehicle-to-vehicle (V2V) communication. Currently, it is impossible to deploy many RSUs at the initial stage of a VANET because of high installation costs, authority limitation, and system reliability. In this paper, a connectivity-oriented maximum coverage RSU deployment scheme (CMCS) is proposed; the CMCS aims to maximize V2I communication performance in urban areas. The paper simulates V2V and V2I networks on the basis of a real urban area of Chengdu, China, through the use of ns-2 and VanetMobiSim simulators. The results show that the CMCS is able to cover the majority of vehicles on the roads and increase communication performance with fewer RSUs. Specific reliability values are also allocated to all deployed RSUs to assist engineers to do timely repair and maintenance work.