Title page for ETD etd-10132000-19080033


Type of Document Dissertation
Author Conte, Roberto
Author's Email Address rconte@vt.edu
URN etd-10132000-19080033
Title Satellite Rural Telephone Network Design: A Methodology for Performance Optimization
Degree PhD
Department Electrical and Computer Engineering
Advisory Committee
Advisor Name Title
Pratt, Timothy J. Committee Chair
Bostian, Charles W. Committee Member
Midkiff, Scott F. Committee Member
Morgan, George E. Committee Member
Sweeney, Dennis G. Committee Member
Keywords
  • Wireless Networks
  • Network design
  • Cellular telephony
  • Multiple access
  • Rural telephony
  • Satellite
  • VSAT networks
Date of Defense 2000-09-28
Availability unrestricted
Abstract
Satellite Rural Telephone Network Design:

A Methodology for Performance Optimization

Roberto Conte

(ABSTRACT)

Rural telephony has historically been a recurring

subject of concern for most large developing

countries. It is generally considered that rural

telephone users do not generate the same level

of telephone traffic and, thus, revenue as urban

users, lowering the incentives to invest in rural

telecommunications. The financial implications

of wiring a vast area for low telephone traffic

causes most telephone service providers to ignore

or delay offering telephone service to those

regions. Still, it is known that telecommunications

are essential to the economic development of a

region, and that traffic increases rapidly as

soon as the service is available.

A satellite-based telephone network can provide

efficient long distance telephone service to

remote rural communities at a lower cost than

land-based wired networks in most cases. Mobile

satellite systems already provide this service,

but are limited in capacity and charge high per-

minute fees for the satellite link. Small earth

stations and GEO satellites can provide this

service more efficiently and at lower cost.

A methodology to optimize the network performance

has been developed. A set of economic models to

evaluate different combinations of network

topologies and multiple access techniques have

been implemented, and a technical-economic

assessment has been performed for the different

technologies under different traffic scenarios.

Traffic intensity, network size and per-minute

user costs have been optimized to achieve the

network's economic break-even point under different

conditions and constraints. The general behavior

of fixed-assignment Single Channel per Carrier

SCPC), fixed-assignment Multiple Channel per

Carrier (MCPC) and demand-assignment SCPC star

networks, as well as demand-assignment SCPC mesh

networks has been analyzed. Important parameters

have been identified in order to improve the

process of effective and cost-efficient satellite

rural telephone network design.

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