MoPADS: A Mobility Profile Aided File Downloading Service in Vehicular Networks

• Published in: IEEE transactions on vehicular technology Vol. 58; no. 9; pp. 5235 - 5246
• Main Authors: Seokhoon Yoon, Ha, D.T., Ngo, H.Q., Chunming Qiao
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.11.2009; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Applied sciences; Bandwidth; Cellular; Cellular communication; Cellular networks; Channels; Downloading; Exact sciences and technology; File download; File servers; integrated cellular and ad hoc relaying; Intelligent transportation systems; intelligent transportation systems (ITS); Intelligent vehicle highway systems; Intelligent vehicles; Network servers; Networks; Performance analysis; Relays; Servers; Spread spectrum communication; Studies; Switching and signalling; Systems, networks and services of telecommunications; Telecommunications; Telecommunications and information theory; Vehicles; vehicular networks; Wireless communication; Wireless mesh networks; Performance evaluation; integrated cellular and ad hoc relaying; Relaying; Packet switching; File download; Meshed network; File transfer; Downloading; Transportation system; Wireless telecommunication; Optimization method; Coverage; Urban area; Multihop network; NP hard problem; Subsystem; intelligent transportation systems (ITS); Wireless network; System simulation; Vehicular communication; vehicular networks; Plasma spraying; Ad hoc network; Intelligent system
• ISSN: 0018-9545; 1939-9359
• DOI: 10.1109/TVT.2009.2029121

This paper proposes a new intelligent transportation system (ITS) that uses not only integrated cellular and wireless multihop relaying technologies but vehicles' mobility profiles to provide quality yet affordable services as well. It focuses on a subsystem where cellular bandwidth is mostly used for control signals, and a wireless mesh network called ad hoc distribution network (ADN) is used for file transfer in a multihop fashion from one or more server stations to vehicles via access points (APs) using ad hoc channels. A major design goal is to maximize the amount of requested data that can be delivered to the requesting vehicles during their journey using the ADN, taking into consideration the limited coverage of each AP and the requirement that the requested data have to arrive at a certain AP before the requesting vehicles arrive at that AP in order for the data to be downloadable. This paper proves that the optimization problem, as well as its key variations, is NP-hard and proposes efficient solutions to the problem. Analysis and realistic simulations involving a real city map and practical vehicular traces are used to evaluate the performance, and the results indicate that satisfying performance for file download applications can be achieved.