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A Graph Theoretic Approach for Analysis and Design of Community Wireless Networks Abdelnasser M. Abdelaal and Hesham H. Ali Department of Computer Science College of Information Science and Technology University of Nebraska at Omaha Omaha, NE 68182 {aabdelaal |  hali}@mail.unomaha.edu Amcis2008 Amcis2008
Agenda   ,[object Object],[object Object],[object Object],[object Object],[object Object],Amcis2008
What are Community Wireless Networks ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Amcis2008 Amcis2008
What are Community Wireless Networks, Cont.  ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Private WLANs   Municipal Wireless   CWNs
Issues of CWNs ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Amcis2008 Amcis2008
Developing a Wireless Network Suitable for a Specific Social Network   Amcis2008 The social graph supported by the CWN The wireless graph that serves the community ,[object Object]
Why Graph Theory ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Amcis2008
What is a Graph? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Amcis2008 Amcis2008 a b c d e f h g 5
What can graphs model? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Amcis2008 Amcis2008 The world is composed of networks
Community Wireless Networks Computer Science   Management Science Social Science Economics and Finance CWNs: A Multidisciplinary Approach ,[object Object],[object Object],[object Object]
Proposed Graph Theoretic Model ,[object Object],Amcis2008 Amcis2008 Outputs  Inputs Volunteerism, donations, partnerships, node hosting, OSS, frequency regulation, social ties and values  CWNs Value proposition, incentives,  management, ownership, pricing, funding, acceptance QoS, security, reliability, node placement, coverage, data rate, signal interference  Tech factors Social   factors Graph theory  Physical capital, social capital and human capital  Variables of  CWNs   Implementation phase Operation phase Educational, commercial, medical, municipal, societal, and personal services Mobility, affordability, time and effort savings, resource sharing Social and economic development
A Graph Theoretic Model for CWNs, cont. ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Amcis2008 Amcis2008
Advantages of this Model    ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Modeling Stakeholders of CWNs ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Amcis2008
Modeling The Omaha Wireless Network   Washington Library  Elmwood Park  UNO Rosenblatt Stadium  ,[object Object],[object Object],[object Object],- - 0 0 Access to public places  Municipalities 0 - Access points 0 Access points  Tech. vendors Reputation  Publicity  - Exposure Publicity  community   0 Technical skills  - Reputation  Students  Reputation Publicity Free internet, old PCs, civic engagement Experience , free internet - PKI Municipalities  Vendors Omaha community Students PKI  
Determining Where to Install the Access Point  ,[object Object],[object Object],[object Object],[object Object],Amcis2008
Modeling Community Contributions to Build the Network   Amcis2008 ,[object Object],[object Object]
Modeling Community Contributions to Build the Network, Cont. Amcis2008 ,[object Object],[object Object],[object Object],[object Object],[object Object]
Modeling Community Contributions to Build the Network, Cont Amcis2008   time money Tech.support Sharing OSS Other Time 1 0.06 0.46 0.59 0.3 0.22 Money 0.06 1 0.06 0.2 0.28 0.2 tech.support 0.46 0.06 1 0.23 0.3 0.22 Sharing 0.59 0.2 0.23 1 0.13 0.18 develop software 0.3 0.28 0.3 0.13 1 0.46 Other 0.22 0.2 0.22 0.18 0.46 1 The Similarity Matrix between Different Types of Community Contributions
Significance of Research ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Amcis2008 Amcis2008
Significance of Research, Cont. ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Amcis2008 Amcis2008
Conclusion  ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Amcis2008 Amcis2008
www.liewcf.com/.../diy-wifi-antenna.jpg
[object Object]

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Graph Theoretic Model for Community Wireless Networks

  • 1. A Graph Theoretic Approach for Analysis and Design of Community Wireless Networks Abdelnasser M. Abdelaal and Hesham H. Ali Department of Computer Science College of Information Science and Technology University of Nebraska at Omaha Omaha, NE 68182 {aabdelaal | hali}@mail.unomaha.edu Amcis2008 Amcis2008
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  • 19. Modeling Community Contributions to Build the Network, Cont Amcis2008   time money Tech.support Sharing OSS Other Time 1 0.06 0.46 0.59 0.3 0.22 Money 0.06 1 0.06 0.2 0.28 0.2 tech.support 0.46 0.06 1 0.23 0.3 0.22 Sharing 0.59 0.2 0.23 1 0.13 0.18 develop software 0.3 0.28 0.3 0.13 1 0.46 Other 0.22 0.2 0.22 0.18 0.46 1 The Similarity Matrix between Different Types of Community Contributions
  • 20.
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