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The DYMO Routing Protocol in VANET Scenarios
Christoph Sommer and Falko Dressler
Computer Networks and Communication Systems
Dept. of Computer Sciences, University of Erlangen-Nuremberg, Germany
{christoph.sommer,dressler}@informatik.uni-erlangen.de
Abstract—Coupling Vehicular Ad Hoc Networks (VANETs) with wired networks such as the Internet via access points creates a difficult mix of highly mobile nodes and a static infrastructure. In order to evaluate the performance of typical ad hoc routing protocols—in particular, we used Dynamic MANET
On Demand (DYMO)—in such VANET scenarios, we combined microsimulation of road traffic and event-driven network simulation. Thus, we were able to analyze protocols of the Internet protocol suite in VANET scenarios with highly accurate mobility models. Varying parameters of DYMO for a multitude of traffic and communication scenarios helped point out approaches for improving the overall performance and revealed problems with the deployment. It could be shown that in realistic scenarios, even for medium densities of active nodes and low network load, overload behavior leads to a drastic decrease of the perceived network quality. Cross-layer optimization of transport and routing protocols therefore seems highly advisable.
I. I NTRODUCTION
Recent research in the area of Vehicular Ad Hoc Networks
(VANETs) was primarily focused on the development and the evaluation of highly specialized protocols, e.g. for the exchange of position information or hazard warnings between cars [1]. Significantly less work dealt with evaluating the use of existing Internet protocols, along with standard hard- and software, to create and maintain VANETs and couple these networks with the Internet.
The Mobile Ad Hoc Network (MANET) working group of the Internet Engineering Task Force (IETF) develops standards for routing in dynamic networks of both mobile and static nodes. One protocol currently in the working group’s focus
Christoph Sommer and Falko Dressler
Computer Networks and Communication Systems
Dept. of Computer Sciences, University of Erlangen-Nuremberg, Germany
{christoph.sommer,dressler}@informatik.uni-erlangen.de
Abstract—Coupling Vehicular Ad Hoc Networks (VANETs) with wired networks such as the Internet via access points creates a difficult mix of highly mobile nodes and a static infrastructure. In order to evaluate the performance of typical ad hoc routing protocols—in particular, we used Dynamic MANET
On Demand (DYMO)—in such VANET scenarios, we combined microsimulation of road traffic and event-driven network simulation. Thus, we were able to analyze protocols of the Internet protocol suite in VANET scenarios with highly accurate mobility models. Varying parameters of DYMO for a multitude of traffic and communication scenarios helped point out approaches for improving the overall performance and revealed problems with the deployment. It could be shown that in realistic scenarios, even for medium densities of active nodes and low network load, overload behavior leads to a drastic decrease of the perceived network quality. Cross-layer optimization of transport and routing protocols therefore seems highly advisable.
I. I NTRODUCTION
Recent research in the area of Vehicular Ad Hoc Networks
(VANETs) was primarily focused on the development and the evaluation of highly specialized protocols, e.g. for the exchange of position information or hazard warnings between cars [1]. Significantly less work dealt with evaluating the use of existing Internet protocols, along with standard hard- and software, to create and maintain VANETs and couple these networks with the Internet.
The Mobile Ad Hoc Network (MANET) working group of the Internet Engineering Task Force (IETF) develops standards for routing in dynamic networks of both mobile and static nodes. One protocol currently in the working group’s focus