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

作　者: M. DIOUBA SACKO
导　师: 黄本雄
学　校: 华中科技大学
专　业: 电子与信息工程
关键词: MANETs group partitioning group merging simulation
分类号: TN929.5
类　型: 博士论文
年　份: 2008年
下　载: 36次
引　用: 0次
阅　读: 论文下载

内容摘要

The mobility model is one of the most important factors in the performance evalua-tion of a mobile ad hoc network (MANET). Traditionally, the Reference Point Group Mo-bility (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 model-ling 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 conven-tional events.In this dissertation, it is aimed to develop an approach to mobility modelling for mo-bile 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 ac-tivities, 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 them-selves triggering group partitioning and merging.We study the impact of our mobility model on DSDV, AODV and DSR routing pro-tocols; 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.

全文目录

Acknowledgments  5-6
ABSTRACT  6-7
ABBREVIATIONS  7-10
Chapter 1 Introduction  10-24
  1.1 Introduction  10-12
  1.2 Background and Motivation  12-13
  1.3 Mobile Ad hoc Networks  13-18
  1.4 Simulation Environment  18-24
Chapter 2 Description of Routing Protocols and Performance Metrics  24-30
  2.1 Table Driven Protocols  24-26
  2.2 On-Demand Routing Protocols  26-28
  2.3 Hybrid  28
  2.4 Performance Metrics  28-30
Chapter 3 Overview of Mobility Models  30-69
  3.1 Entity Mobility Models  30-40
  3.2 Group Mobility Models  40-47
  3.3 Obstacle Mobility Models  47-48
  3.4 Voronoi Graph and Pathways  48-50
  3.5 Freeway Mobility Model  50-51
  3.6 Manhattan Mobility Model  51-52
  3.7 Vehicular Ad hoc Networks  52-54
  3.8 Modelling Social Relationships  54-56
  3.9 Social Networks Theory  56-57
  3.10 Leveraging Social Networks for Information Sharing  57-58
  3.11 Dynamic Group Mobility Models for MANETs  58-69
Chapter 4 Group Splitting and Merging Mobility Mdel for MANETs and Performance Evaluation  69-100
  4.1 Design of Mobility Model: Activities Sequence  69-71
  4.2 Aggregated Activities Sequence  71-72
  4.3 Aggregated Activity Matrices  72-74
  4.4 Merging and Partitioning Processes  74-77
  4.5 Simulation  77-87
  4.6 Practical Example of GSMM Model  87-99
  4.7 Impact of the Node Density  99-100
Chapter 5 Conclusions and Future Works  100-103
  5.1 Conclusions  100-102
  5.2 Future Works  102-103
Bibliography  103-111
Publications  111

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

内容摘要

全文目录

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