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Title POSITION BASED ROUTING IN VEHICULAR AD HOC NETWORKS

Author(s) Samiya Shaheen

Abstract Internet of Things (IoT) involves a large number of smart gadgets along with sensing capabilities to exchange the information across multiple networks. IoT enabled Vehicular Ad-hoc Network (I-VANET) comprises of a large number of vehicles that are connected with neighboring vehicles to exchange data with central repositories. In this scenario, network has a dynamic nature due to high mobility of vehicles or nodes in a smart city environment. Present routing protocols do not meet the challenging requirements for this scenario and position based routing protocols are considered to be a suitable solution. Position based routing protocols also encounter problems in city environment due to obstacles like buildings, trees that block line of sight communication among vehicles within a small area. In this research work, we have proposed a Dynamic Position Based Routing (D-PBR) scheme. It considers the vehicle’s position coordinates along with direction of movement parameters to decide about the next node towards the destination. In this scenario, we have considered the road junctions where different vehicles can join or leave to bring a change in the neighboring vehicle set. We have presented a Dynamic Next-hop Identification (DNI) algorithm that selects the best suitable next-hop vehicle available at the junction to forward the packet towards the destination vehicle. It calculates the distance and direction of neighboring nodes and then identifies the vehicles that can transmit the message in the direction of destination vehicle. It also maintains array-lists to store expected next-hop vehicles and then select the one vehicle. It considers least distance and more accurate direction as per current position of the vehicle that contains the packet for forwarding to the destination vehicle. The work has been validated by simulations using NS 2.35 with TCL scripts and C code along with AWK scripts to extract results from trace files. Results show on the improvement over the existing RIDE protocol regarding end-to-end delay, residual energy, mean hop count, average throughput and average number of vehicles. The average number of vehicles for different densities decreases by 42.86% and mean hop count used for message exchange is decreased by 60% as compared to RIDE.

Type Thesis/Dissertation MS

Faculty Engineering and Computer Science

Department Computer Science

Language English

Publication Date 2019-01-09

Subject Vehicular Adhoc Networks

Publisher NUML

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Format PDF

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Rights NUML