A SURVEY ON ROUTING PERFORMANCE IN VANET

Abstract

Vehicular Ad-Hoc Networks (VANET) emerge from the principles of Mobile Ad-Hoc Networks (MANET). VANET considers vehicles as nodes in a network and transmits messages between these vehicles. Routing in VANET is a key challenge due to the unique features of the network which includes node movement and dynamic change in the network topology. Security is a major issue in VANET because it should provide a safety environment by transmitting warning message to the neighboring vehicles about road accidents, traffic jam or any type of attacks caused to the vehicles. The behavior of routing protocols rely on a variety of internal factors and external factors includes node movement, road topology and various hurdles that block the signals respectively. This needs an extremely flexible approach to deal with dynamic situations by choosing the best routing path and forwarding strategies and by using the appropriate models.