GLOBAL MOBILE SATELLITE SYSTEM COMMUNICATION

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INTRODUCTION . ADVANCEMENT IN WIRELESS TECHNOLOGYNO MORE GEOGRAPHICAL ISOLATIONEXTENSION IN EXISTING NETWORKGLOBAL COMMUNICATION. FIRST MOBILE COMMUNICATION SYSTEM . IN 1976 MARISAT SATELLITE WAS LAUNCHEDCOMMUNICATION BETWEEN SHORE AND SHIPSFIRST IRIDIUM SYSTEM IN 1997 IN LOW EARTH ORBIT. CLAS
GLOBAL MOBILE SATELLITE SYSTEM COMMUNICATION

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1. GLOBAL MOBILE SATELLITE SYSTEM COMMUNICATION

2. INTRODUCTION ADVANCEMENT IN WIRELESS TECHNOLOGY NO MORE GEOGRAPHICAL ISOLATION EXTENSION IN EXISTING NETWORK GLOBAL COMMUNICATION

3. FIRST MOBILE COMMUNICATION SYSTEM IN 1976 MARISAT SATELLITE WAS LAUNCHED COMMUNICATION BETWEEN SHORE AND SHIPS FIRST IRIDIUM SYSTEM IN 1997 IN LOW EARTH ORBIT

4. CLASSIFICATION OF MOBILE SATELLITE SYSTEM GEOSTATIONARY SATELLITE QUASI-ZENITH SATELLITE NON-GEOSTATIONARY SATELLITE

5. GEOSTATIONARY SATELLITE CIRCULAR ORBIT ALTITUDE 36000KM 3-4 SATELLITES ARE ENOUGH TO COVER THE EARTH THEY CAN SEE UPTO 42000KM SATELLITE VISIBILITY 24 HOUR SATELLITE LIFE 20-30 YEARS SATELLITE CONSTELLATION COST LOW

6. QUASI-ZENITH SATELLITE CIRCULAR ORBIT AT 45 DEGREE TO EQUATOR ALTITUDE 36000KM ONE SATELLITE FIXED NEAR ZENITH IN JAPAN 3-4 SATELLITES ARE REQUIRED

7. NON-GEOSTATIONARY SATELLITE FURTHER CLASSIFICATION

8. HIGHLY ELLIPTIC ORBIT(HEO) ALTITUDE 40000KM ORBITAL PERIOD 8-24 HOUR 2-3 SATELLITES REQUIRED LARGE PROPAGATION DELAY SATELLITE LIFETIME 20-25 YRS SET-UP COST IS LOW

9. 2.MEDIUM EARTH ORBIT (MEO) ALTITUDE 10000KM-20000KM ORBITAL PERIOD 6-12 HOUR 10-15 SATELLITES REQUIRED SATELLITE VISIBILITY 2-4 HRS PROPAGATION DELAY LESS SET-UP COST IS MEDIUM

10. 3. LOW EARTH ORBIT ALTITUDE 500-2000KM ORBITAL PERIOD 5-8 HOUR 48 AND ABOVE SATELLITES REQUIRED SATELLITE VISIBILITY 10-20M SATELLITE LIFE IS 4-10 YEARS SET-UP COST IS MUCH HIGH

11. SOME LEO SYSTEM IRIDIUM SYSTEM GLOBALSTAR SYSTEM TELEDESIC SYSTEM

12. IRIDIUM SYSTEM

13. GLOBALSTAR SYSTEM

14. TELEDESIC SYSTEM

15. MEO SYSTEM ICO SYSTEM

16. HOW MOBILE SATELLITE SYSTEM WORKS SATELLITE SEGMENT GROUND SEGMENT ? GATEWAY END-USER

17. HOW A SATELLIE CALL GETS ROUTED BENT PIPE

18. INTERSATELLITE LINKS

19. HANDOVER MANAGEMENT PRIORITISED HANDOVER CALL THAN NEW CALL ALLOCATING GUARD CHANNEL QUEUING THE HANDOVER REQUEST EXTENDED QUEUING OF HANDOVER SCHEME

20. CAPABILITIES OF MOBILE SATELLITE SYSTEM LARGE AREA COVERAGE FLEXIBLE NETWORKS AND SERVICES GLOBAL CONNECTIVITY MULTIMEDIA APPLICATION

21. LIMITATIONS OF MOBILE SATELLITE SYSTEM DELAY AND DOPPLER LOW LINK MARGINS SPECTRUM AND ORBIT MATTERS

22. GROWTH DRIVERS OF MOBILE SATELLITE COMMUNICATION SERVICES DEREGULATION TECHNOLOGY GLOBALIZATION ECONOMIC GROWTH DEMAND OF MOBILE SERVICES

23. FREQUENT USER OF MOBILE SATELLITE SYSTEM GLOBAL ROAMER CELLULAR EXTENSION LANDLINE EXTENSION

24. SERVICES HIGH BANDWIDTH INEXPENSIVE UNTETHERED COMMUNICATION SIMPLE NETWORK TOPOLOGY VIDEO CONFERENCING

25. APPLICATIONS

26. CONCLUSION PROMISE A NEW ERA OF GLOBAL CONNECTIVITY


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