Group Splitting and Merging Mobility Model for Mobile Ad Hoc Networks and Performance Evaluation

论文摘要

The mobility model is one of the most important factors in the performance evaluation of a mobile ad hoc network （MANET）. Traditionally, the Reference Point Group Mobility （RPGM） model has been used to model the group mobility, where nodes in the same group always stay together throughout the simulation process. Such models fail in modelling scenarios where groups may be partitioned and merged. These kinds of application scenarios can be found in wireless ad hoc network applications, such as outdoor teaching, scenes of a fire, flood, earthquake, battlefield, conference, seminar sessions, and conventional events.In this dissertation, it is aimed to develop an approach to mobility modelling for mobile ad hoc networks. The proposed mobility model is called Group Splitting and Merging Mobility （GSMM） model for mobile ad hoc networks and performance evaluation. In this model, group members may sometimes move together and sometimes separately. They have similar mobility patterns and can directly communicate with each other. Indeed, the model presents the trip chain of individuals belonging to a single home. During daily activities, they move from home to some locations and return back after completing daily tasks. Alternatively they partition and merge at some reference points placed on the trip chain. Therefore, at reference points the group members dynamically re-configure themselves triggering group partitioning and merging.We study the impact of our mobility model on DSDV, AODV and DSR routing protocols; by simulation.We compare the routing protocols performances in terms of packet delivery ratio, throughput, loss packet, and routing packet overhead. The simulation is written by the network simulator 2 （NS-2） and the graphs are generated using MATLAB. Simulation results show that different routing protocols have different ’reactions’ to the mobility model.

论文目录

• Acknowledgments
• ABSTRACT
• ABBREVIATIONS
• TABLE OF CONTENTS
• Chapter 1 Introduction
• 1.1 Introduction
• 1.2 Background and Motivation
• 1.3 Mobile Ad hoc Networks
• 1.4 Simulation Environment
• Chapter 2 Description of Routing Protocols and Performance Metrics
• 2.1 Table Driven Protocols
• 2.2 On-Demand Routing Protocols
• 2.3 Hybrid
• 2.4 Performance Metrics
• Chapter 3 Overview of Mobility Models
• 3.1 Entity Mobility Models
• 3.2 Group Mobility Models
• 3.3 Obstacle Mobility Models
• 3.4 Voronoi Graph and Pathways
• 3.5 Freeway Mobility Model
• 3.6 Manhattan Mobility Model
• 3.7 Vehicular Ad hoc Networks
• 3.8 Modelling Social Relationships
• 3.9 Social Networks Theory
• 3.10 Leveraging Social Networks for Information Sharing
• 3.11 Dynamic Group Mobility Models for MANETs
• Chapter 4 Group Splitting and Merging Mobility Mdel for MANETs and Performance Evaluation
• 4.1 Design of Mobility Model:Activities Sequence
• 4.2 Aggregated Activities Sequence
• 4.3 Aggregated Activity Matrices
• 4.4 Merging and Partitioning Processes
• 4.5 Simulation
• 4.6 Practical Example of GSMM Model
• 4.7 Impact of the Node Density
• Chapter 5 Conclusions and Future Works
• 5.1 Conclusions
• 5.2 Future Works
• Bibliography
• Publications