Abstracto

Efficient Way of Emergency Message Dissemination and Reliable Broadcast in Vehicular Ad-Hoc Network

R.Maheswari, Dr.T.V.U.Kiran Kumar

In this paper, for a wide range of vehicular scenarios a efficient protocol for vehicular ad hoc networks has been proposed. Safety related message may transmission is an effective way to contain life critical information, it is a necessity that the sender as well as the message are authentic. which only employs local information acquired via periodic beacon messages, containing the both acknowledgment and emergency detection mechanisms of the circulated broadcast messages. However it is fraught with fundamental challenges such as message redundancy, hidden terminals and broadcast storms, which greatly degrade network performance. This is being tested with implemented at the road intersections without any need to even recognize inter sections .First, as no acknowledgment (ACK) mechanism is applied for broadcast messages in the medium-access-control (MAC)layer, message loss due to packet collisions or poor channel conditions cannot be easily detected. To other vehicles as fast and reliable as possible , the traditional broadcasting scheme without an (ACK) mechanism is not suitable for emergency message delivery in IVC, due to the limited transmission range, message relaying from intermediate nodes is required to reach remote vehicles. Therefore the objective of the research is to survey broadcast in vehicular networks. We analysis the different protocols and simulation using NS-2.