Satellites in Telecommunications

Content

• 1 Introduction
  • 1.1 Overview
  • 1.2 Advantages of Wireless Networks
    • 1.2.1 Popularity
    • 1.2.2 Mobility
    • 1.2.3 Ease of Deployment8
  • 1.3 First Generation of Mobile Telecommunications (1G)8
  • 1.4 Second Generation Mobile Telecommunications (2G)10
    • 1.4.1 SIM
    • 1.4.2 Speech Coding
    • 1.4.3 Authentications and Security in GSM networks
    • 1.4.4 WAP (Wireless Applicant Protocol)12
  • 1.5 Mobile Telecommunications third generation
    • 1.5.1 Characteristics of 3G Systems
    • 1.5.2 The Evolution of the 3G System
    • 1.5.3 Applications in 3G system
    • 1.5.4 Summary
  • 1.6 Mobile telecommunications 4th generation and Beyond
    • 1.6.1 Target of 4G System
    • 1.6.2 Applications and Services of 4G system
      • 1.6.2.1 Tele Presence
      • 1.6.2.2 Information Access
      • 1.6.2.3 Inter-Machine Communication
      • 1.6.2.4 Intelligent Shopping
      • 1.6.2.5 Location-Based Services
      • 1.6.2.6 Globalization of Products
      • 1.6.2.7 Communicating Appliances
      • 1.6.2.8 Standardization Diversification
    • 1.6.3 Summary
• 2 Launching a Satellite
  • 2.1 Overview
  • 2.2 Types of Satellites
    • 2.2.1 Weather Satellite
    • 2.2.2 Broadcast Satellite
    • 2.2.3 Communications Satellite
    • 2.2.4 Scientific Satellite
    • 2.2.5 Navigational Satellite
    • 2.2.6 Rescue Satellite
    • 2.2.7 Earth Observation Satellite
    • 2.2.8 Military Satellite
    • 2.2.9 Photography Satellite
  • 2.3 Satellite Communications Characteristics
  • 2.4 Satellite Applications
    • 2.4.1 Wireless Rapid Deployment21
    • 2.4.2 Broadcasting
    • 2.4.3 Hostile Environments
    • 2.4.4 Mobility
    • 2.4.5 Voice Telephony
    • 2.4.6 Cellular Systems
    • 2.4.7 World Wide Coverage System
    • 2.4.8 Connectivity for Aircraft Passengers
    • 2.4.9 Global Positioning Systems (GPS)22
    • 2.4.10 Internet Access
  • 2.5 Spectrum Issues
  • 2.6 Satellite Systems
  • 2.7 Satellites Orbits
    • 2.7.1 Low Earth Orbit (LEO) satellites
      • 2.7.1.1 Overview
      • 2.7.1.2 Main Characteristics of LEO Orbits
    • 2.7.2 Medium Earth Orbit (MEO)26
    • 2.7.3 Geosynchronous Earth Orbit (GEO)27
      • 2.7.3.1 Main characteristics of GEO
      • 2.7.3.2 Properties of GEO
    • 2.7.4 Elliptical Orbits
  • 2.8 VSAT Systems
    • 2.8.1 Elements of VSAT system
  • 2.9 Examples of Satellite-based Mobile Telephony Systems
    • 2.9.1 Iridium
      • 2.9.1.1 Overview
      • 2.9.1.2 Frequency Reuse
      • 2.9.1.3 Gateways
    • 2.9.2 Globalstar33
      • 2.9.2.1 Overview
      • 2.9.2.2 Gateways
      • 2.9.2.3 Calling Costs
      • 2.9.2.4 Cost of Satellite Phones
    • 2.9.3 Satellite-based Internet Access
      • 2.9.3.1 Overview
      • 2.9.3.2 Routing Issues
      • 2.9.3.3 Routing in the Asymmetric Architecture
      • 2.9.3.3.1 DT-DVTR
      • 2.9.3.3.2 VN
      • 2.9.3.4 Routing in an Asymmetric System
• 3 Economics of satellite telecommunications and mobile telecommunications
  • 3.1 Overview
  • 3.2 Benefits of Telecommunications
  • 3.3 The Changing Economics of the Wireless Industry
  • 3.4 Terminal Manufacturers
  • 3.5 Increasing Sales Figures
  • 3.6 Lower Prices
  • 3.7 Increased Competition from Asian Manufacturers
  • 3.8 Role of governments
  • 3.9 Market Opportunities
  • 3.10 Charging in the mobile telecommunication