Impact of realistic simulation on the evaluation of mobile Ad-hoc routing protocols
Résumé
Today’s advanced simulators facilitate thorough studies on vehicular ad hoc
networks (VANETs). However, the choice of the physical layer and the mobility models in such simulators
is a crucial issue that greatly impacts the results. Realistic simulation of routing protocols in VANETs is still
an open question. Indeed, only a few works address routing protocols comparison performed under realistic
conditions. This paper compares common reactive, proactive, hybrid, and geographic routing protocols
using a simulation platform integrating a realistic physical layer and mobility models. It also presents and
analyzes several reactive protocol enhancement propositions dedicated to the VANETs context, such as
multipath routing, but also protocols tuning, which allows it to adapt faster. They all have lot of attention
and are typically proposed to increase the reliability of data transmission. This paper studies the behavior of
each protocol in different situations and analyzed their advantages and drawbacks. Results presented in this
paper give an important explanation on the contradictory results found in similar works. Finally, our realistic
simulations show that reactive protocols are the best suited for VANETs, and more especially the dynamic
Mobile Adhoc NETwork on-demand protocol.