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Mobile Information Systems
Volume 2017 (2017), Article ID 4863167, 9 pages
Research Article

Content Downloading with the Assistance of Roadside Cars for Vehicular Ad Hoc Networks

1School of Computer Science and Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China
2Hangzhou College of Commerce, Zhejiang Gongshang University, Hangzhou 310018, China

Correspondence should be addressed to Lingfei Yu

Received 3 March 2017; Revised 4 July 2017; Accepted 30 July 2017; Published 11 September 2017

Academic Editor: Karl Andersson

Copyright © 2017 Haigang Gong and Lingfei Yu. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Plenty of multimedia contents such as traffic images, music, and movies pose great challenges for content downloading due to the high mobility of vehicles and intermittent connectivity for vehicular ad hoc networks. Roadside units or APs can improve the efficiency of content downloading but with the cost of large investments. In this paper, an efficient content downloading scheme is proposed with the assistance of parking clusters, which are formed by roadside parked cars. After receiving the downloading request, the parking clusters, which the downloader will travel through according to the estimated trajectory, will make a download scheduling for the downloader. Then the downloader acquires the content chunks while it drives through the parking clusters. Simulation results show that the proposed scheme achieves better performance than intervehicle approach and RSU based approach.