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A traffic flow-oriented routing protocol for VANET
By : Ali Moallim
Date : 2017-08-21
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This paper presents a novel position-based routing protocol for vehicular ad hoc networks (VANETs) to enhance
traffic safety and traffic organization and facilitate driving through a smart transportation system. The protocol is
referred to as the traffic flow-oriented routing (TFOR) protocol for VANETs. It considers a real-time urban scenario
with multi-lane and bi-directional roads. It chooses junction optimally considering vehicular traffic flows to
accomplish robust routing paths and thereby forwarding the data packets. The new junction selection mechanism and
routing between the junctions is based on two-hop neighbor information, which increases packet-delivery ratio and
decreases end-to-end delay. We designed, implemented, and compared TFOR against existing routing protocols of
VANETs (greedy-perimeter stateless routing (GPSR), geographic source routing (GSR), and enhanced greedy
traffic-aware routing (E-GyTAR)). Simulation outcomes in urban scenarios show that TFOR minimizes average
end-to-end delay and routing overhead by on average 15.3% and 19.5%, respectively, compared to GPSR. It
reduces routing overhead up to 17% compared to GSR. TFOR maximizes packet-delivery ratio on an average of
17.5%, 10.7%, and 7.2% compared to GPSR, GSR, and E-GyTAR, respectively.
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