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Speed and Pause Time Impact on Position Based Routing Protocols Under Different Mobility Models  
Adam Macintosh1,Mohammad Ghavami2,Ming Fei Siyau3
*1, LSBU, Email : macintoa@lsbu.ac.uk
2, LSBU, Email : mghavami@lsbu.ac.uk
3, LSBU, Email : msiyau@lsbu.ac.uk
Abstract .Position based routing protocols use geographical position information to route data packets between mobile nodes (MNs), which make them popular in mobile ad hoc networks (MANETs). The issue of routing and maintaining packets between MNs in MANETs has always been a challenge due to the dynamic changes in the network layout. The aim of this paper is to investigate the fundamental factors speed, pause time and minimum node degree which have a major impact on the performance of position based routing protocols under different mobility models. A comparative study of major position based routing protocols and mobility models are presented here. Both Independent Entity and Dependent Group Mobility Models have been selected. The effect of speed and pause time on the performance of protocols under each of the chosen mobility models are analysed. Deriving an analytical theorem for the required transmission range in connected ad hoc networks. Meaningful metrics for assessing the performance of MANET protocols are identified and defined. OPNET simulator was used to design and build a unified simulation environment; to evaluate the performance of the different protocols proposed in the Internet Engineering Task Force (IETF), in different scenarios.
Keywords : Mobility models, Mobile Ad hoc network,OPNET
 URL: http://dx.doi.org/10.7321/jscse.v4.n3.1  

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