Performance Evaluation of Routing Algorithms for Mobility Models in Ad hoc Network

摘要

Mobile Ad hoc Networks (MANET) have been the focus of many recent research and development efforts because of the necessity of decentralized network configuration. An ad hoc network is characterized by multi-hop wireless connectivity and frequently changing network topology. To facilitate communication in this dynamically changing network topology, several routing protocols are proposed such as Dynamic Source Routing protocol, Ad hoc On-demand Distance Vector protocol and Destination Sequenced Distance Vector protocol. Most of research works are carried out by assuming random mobility models for speed and direction of the mobile. Such models can generate an unrealistic behavior such as sudden stopping and turning. Later, researchers used Uniform mobility models for both speed and position of the node. In this work, we define an exponential distribution model for speed and Gaussian distribution model for nodes position with its intuitively appealing natural formulation rather than earlier assumptions. We have applied our model to different routings protocols and have evaluated network performance under different mobility patterns. It is observed that when the mobile's position follows Gaussian distribution and its speed follows an exponential distribution, the performances of the routing protocol are better compared to uniform distribution.