Comparison between Benefits and Costs of Offload of Mobile Internet Traffic via Vehicular Networks

39 Pages Posted: 2 Apr 2015 Last revised: 7 Oct 2017

See all articles by Alexandre Ligo

Alexandre Ligo

Carnegie Mellon University; Universidade do Porto

Jon M. Peha

Carnegie Mellon University

Pedro Ferreira

Carnegie Mellon University - H. John Heinz III School of Public Policy and Management; Carnegie Mellon University - Department of Engineering and Public Policy

João Barros

Universidade do Porto

Date Written: November 1, 2015

Abstract

Dedicated Short Range Communications (DSRC) is an emerging technology that connects automobiles with each other and with roadside infrastructure. The U.S. Department of Transportation may soon mandate that cars be equipped with DSRC to enhance safety. This work finds that if they do, then DSRC networks could also be an important new way to provide Internet access in urban areas that is more cost-effective than expanding the capacity of cellular networks. By combining our simulation model with data collected from an actual vehicular network that is operating in Porto, Portugal, we estimate how much Internet traffic can be carried on vehicular networks that would otherwise be carried by cellular networks under a variety of conditions. We then compare the benefits of cost savings of reduced cellular infrastructure due to offload with the cost of the DSRC vehicular network, to determine whether the former exceeds the latter. Although the benefits from offloading Internet traffic alone are not enough to justify a universal mandate to deploy DSRC in all vehicles, i.e. Internet offload benefit alone is less than total costs, we find that the majority of DSRC-related costs must be incurred anyway if safety is to be enhanced. Thus, soon after a mandate to put DSRC in new vehicles becomes effective, the benefits of offload in densely populated areas would be significantly greater than the remaining costs, which are the costs of roadside infrastructure that can serve as a gateway between DSRC-equipped vehicles and the Internet. Moreover, offload benefit would exceed DSRC infrastructure cost in regions with lower and lower population densities over time.

Keywords: Vehicular networks, mobile data offload, Dedicated Short Range Communications (DSRC), benefit-cost analysis

Suggested Citation

Ligo, Alexandre and Peha, Jon M. and Ferreira, Pedro and Barros, João, Comparison between Benefits and Costs of Offload of Mobile Internet Traffic via Vehicular Networks (November 1, 2015). TPRC 43: The 43rd Research Conference on Communication, Information and Internet Policy 2015. Available at SSRN: https://ssrn.com/abstract=2587771

Alexandre Ligo (Contact Author)

Carnegie Mellon University ( email )

Pittsburgh, PA
United States

Universidade do Porto ( email )

Porto
Portugal

Jon M. Peha

Carnegie Mellon University ( email )

Pittsburgh, PA 15213-3890
United States

Pedro Ferreira

Carnegie Mellon University - H. John Heinz III School of Public Policy and Management ( email )

Pittsburgh, PA 15213-3890
United States

Carnegie Mellon University - Department of Engineering and Public Policy ( email )

Baker Hall 129
5000 Forbes Ave
Pittsburgh, PA 15213
United States

João Barros

Universidade do Porto ( email )

Rua Dr. Roberto Frias
4200-464 Porto
Portugal

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