Gene

Routing protocol

Broadcasting (networking)

Distributed computing

Engineering

Civil engineering

Asynchronous communication

Network packet

Chemistry

Vehicular ad hoc network

Key (lock)

Handshake

Computer network

Computer security

Computer science

Intelligent transportation system

Biochemistry

Wireless

Robustness (evolution)

Telecommunications

Wireless ad hoc network

IEEE Transactions on Mobile Computing

In Vehicular Ad-hoc Networks (VANETs), fast and reliable dissemination of safety messages is a key step toward improving the overall road safety. In a highly dynamic VANET environment, safety message dissemination in a multi-hop manner is a challenging and complex problem that has gained significant attention recently. Many protocols and schemes have been proposed to efficiently share safety messages among vehicles. However, most existing techniques do not perform well under real-world traffic conditions, or perform adequately only under very limited scenarios and traffic conditions. This research proposes a highly efficient and reliable multi-hop broadcasting protocol, Intelligent Forwarding Protocol (IFP), that exploits handshake-less communication, ACK Decoupling, and an efficient collision resolution mechanism. In this research, IFP has been extensively studied and evaluated to establish its robustness and superiority over existing schemes. A key contribution of this paper is to present an in-depth analysis and optimization of IFP using theoretical modeling, thorough simulations, and extensive real-world experimentation. With IFP, the message propagation delay is significantly reduced and packet delivery ratio is drastically improved.

Towards Fast and Reliable Multihop Routing in VANETs