Evaluation of a Cooperative ARQ Protocol for Delay-Tolerant Vehicular Networks

Authors:
Julián Morillo-Pozo;Óscar Trullols-Cruces;José M. Barceló-Ordinas;Jorge García-Vidal
Affiliations:
Computer Architecture Department (DAC), Techinal University of Catalonia (UPC), Barcelona, Spain 08034;Computer Architecture Department (DAC), Techinal University of Catalonia (UPC), Barcelona, Spain 08034;Computer Architecture Department (DAC), Techinal University of Catalonia (UPC), Barcelona, Spain 08034;Computer Architecture Department (DAC), Techinal University of Catalonia (UPC), Barcelona, Spain 08034
Venue:
Wireless Systems and Mobility in Next Generation Internet
Year:
2008

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Abstract

This paper evaluates a Cooperative ARQ protocol to be used in delay-tolerant vehicular networks. The scenario consists in cars downloading information from Access Points along a road. The key difference between proposed Cooperative ARQ protocols is when the cooperation takes place. Simply C-ARQ cooperation occurs in a packet-by-packet basis. In this proposal, that we call DC-ARQ (Delayed Cooperative ARQ), the cooperation is delayed until cars are out of the coverage area of the Access Point. The scheme has been evaluated through simulations. A comparison of DC-ARQ with a baseline case in which no cooperation is used has been performed under different vehicle densities scenarios.