METRIC DRIVEN MOBILITY MODELING IN TACTICAL NETWORKS

Open Access
Author:
Ray, Sucharita
Graduate Program:
Electrical Engineering
Degree:
Master of Science
Document Type:
Master Thesis
Date of Defense:
April 18, 2011
Committee Members:
  • Dr Thomas La Porta, Thesis Advisor
  • Thomas La Porta, Thesis Advisor
Keywords:
  • mobility modeling
  • data replication
  • mobile ad hoc network
  • tactical network
Abstract:
Mobility management is a key aspect of designing and evaluating protocols for Mobile Ad Hoc Networks (MANETs). The high mobility of nodes in a MANET constantly causes the network topology to change. Mobility patterns of nodes have a direct effect on network parameters like path length, neighborhood size, link stability and so on. Consequently the network performance is strongly affected by the nature of mobility pattern. Hence, while evaluating protocols for a specific MANET application, it becomes imperative to use a mobility model that is able to capture the movement of nodes in a considerably accurate manner. The objective of this work is to produce mobility models that are able to describe tactical mobility in military applications of MANETs. We begin with a quick survey of the common mobility models that have been used in the past and go on to show that these models prove to be insufficient when modeling tactical mobility in military networks. We then describe the design of four novel models that capture common military scenarios. In doing so we present a trace based analysis, a motion model as well as a mathematical model. The errors between these three approaches have been calculated for specific parameters. In the last part of this work we evaluate different data replication algorithms for the four mobility scenarios and suggest the algorithm that performs best in each case.