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A Model for Optimal Selection of Internet Bandwidth with Desired Quality of Service, and Applying it for Iran

Ahoopai, Hossein | 2011

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 42151 (01)
  4. University: Sharif University of Technology
  5. Department: Industrial Engineering
  6. Advisor(s): Kianfar, Ferydoon
  7. Abstract:
  8. This thesis intends to provide a decision model to determine the best amount of bandwidth that must be rented from each of the broadband Internet service providers. Each internet service provider has a proposal. Each proposal consists of a path and a cost and the values of performance indicators for the path. The aim is to achieve an acceptable range for overall network key performance indicators with minimum total cost . Network performance key indicators are availability , packet loss and packet delay. Internet service providers have several pops throughout the world and there are several path to these pops. A link is a combination of origin point , local path , exit point , international path , and a pop of provider. To solve the problem we prepare a graph containing all proposed links .Then we obtain performance key values for each link base on proposed SLA ,and historical data of that path. Then we employ a mathematical model to obtain the functions for total value of performance indicators for graph versus link bandwidth variables. Using total required bandwidth and constrains on origins and exit points we obtain constrain relations. The objective is to minimize total renting cost. As a case study we used TIC network data. TIC is a company in Iran which is responsible for data traffic in core of local network and to Broadband Internet Service Providers as well
  9. Keywords:
  10. Mathematical Model ; Integer Programming ; Key Performance Indicator (KPI) ; Internet Service Providers ; Service Level Agreement ; Point of Presence

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