title: Performance improvement in geographic routing for Vehicular Ad Hoc Networks.
abstract: Geographic routing is one of the most investigated themes by researchers for reliable and efficient dissemination of information in Vehicular Ad Hoc Networks (VANETs). Recently, different Geographic Distance Routing (GEDIR) protocols have been suggested in the literature. These protocols focus on reducing the forwarding region towards destination to select the Next Hop Vehicles (NHV). Most of these protocols suffer from the problem of elevated one-hop link disconnection, high end-to-end delay and low throughput even at normal vehicle speed in high vehicle density environment. This paper proposes a Geographic Distance Routing protocol based on Segment vehicle, Link quality and Degree of connectivity (SLD-GEDIR). The protocol selects a reliable NHV using the criteria segment vehicles, one-hop link quality and degree of connectivity. The proposed protocol has been simulated in NS-2 and its performance has been compared with the state-of-the-art protocols: P-GEDIR, J-GEDIR and V-GEDIR. The empirical results clearly reveal that SLD-GEDIR has lower link disconnection and end-to-end delay, and higher throughput as compared to the state-of-the-art protocols. It should be noted that the performance of the proposed protocol is preserved irrespective of vehicle density and speed.
authors.affiliation: Wireless Communications and Networking Research Lab, School of Computer and Systems Sciences, Jawaharlal Nehru University, New Delhi 110067, India. omokop@gmail.com.
authors.forename: Omprakash
authors.initials: O
authors.lastname: Kaiwartya
authors.affiliation: Wireless Communications and Networking Research Lab, School of Computer and Systems Sciences, Jawaharlal Nehru University, New Delhi 110067, India. skdohare@yahoo.com.
authors.forename: Sushil
authors.initials: S
authors.lastname: Kumar
authors.affiliation: Wireless Communications and Networking Research Lab, School of Computer and Systems Sciences, Jawaharlal Nehru University, New Delhi 110067, India. lobiyal@gmail.com.
authors.forename: D K
authors.initials: DK
authors.lastname: Lobiyal
authors.affiliation: Faculty of Computing, Universiti Teknologi Malausia (UTM), Skudai Johor 81310, Malaysia. hanan@utm.my.
authors.forename: Abdul Hanan
authors.initials: AH
authors.lastname: Abdullah
authors.affiliation: Faculty of Computing, Universiti Teknologi Malausia (UTM), Skudai Johor 81310, Malaysia. nhahmed2@live.utm.my.
authors.forename: Ahmed Nazar
authors.initials: AN
authors.lastname: Hassan