susi andriani [email protected] tim-99. overview satellite technology gmpcs definition ...
TRANSCRIPT
SUSI [email protected]
TIM-99
OVERVIEW
Satellite Technology GMPCS Definition Why GMPCS? GMPCS Operator Introducing ACeS
moon
earth
sun
Satellite is any object that orbits or revolves around another object (For example : the moon is a satellite of earth,and earth is a satellite of a sun)
What is a satellite ?
satellite as relay station in space send and receive messages from
anywhere on earth messages can be telephone calls,
TV pictures, fax, Internet connections have a wide coverage
What is communications satellites?
Satellite Technology
Satellite Communication System
Mobile Network
Fixed Network
Gateway
TT & C Station
Satellite Operation
Center
Space segment Space segment
Ground segmentGround segment
Satellite Technology
UPLINK DOWN-LINK
Space Station Space Station
Transmitting Earth Station
ReceivingEarth Station Ground Station Ground Station
Geostationary Orbit (GEO) 36000 km Medium Earth Orbit (MEO) 5000 - 12.000 km Low Earth Orbit (LEO) 500 - 1500 km
GSO36000 km
non-GSO (LEO, MEO)500 - 12000 km
Satellite Orbits
What is GMPCS ?
• Defined by the International Telecommunications Union (ITU) as, 'any satellite system (i.e., fixed (FSS) or mobile (MSS), global or regional, geo-stationary or non-geo-stationary, existing or planned) providing telecommunications services directly to the end-users from a constellation of satellites
WHY GMPCS ?
• GMPCS networks will provide a unique technical solution to the limitations associated with terrestrial networks, offering messaging, voice, and data communications accessibility to anyone, anywhere, at anytime.
World Telecommunication Policy Forum (WTPF) (Geneva, 21 - 23 October 1996)
WTPF
5 Opinions 1 The role of GMPCS 2 The shared vision and principles for GMPCS 3 Essential Studies by ITU 4 GMPCS MoU (Memorandum of Understanding) 5 Implementation of GMPCS in Developing Countries
MEET THE PLAYERS ....
• Coverage : global, 10 satellites, MEO (103555 km), operational : 2000, Inmarsat (UK company)
• Coverage : global, 288 satellites, Internet in the Sky, LEO (700 km), operational : 2004, Bill Gates & Craig Mc Graw (US)
• Coverage : regional (Asia Pacific), GEO (35800 km), operational : August 2000 (launched : 12 February 2000), Indonesia
• Coverage : Global, 66 satellites, orbit : LEO (780km) operational : since 1998 --> GMPCS Pioneer
• Coverage : global, 48 satellites, orbit : LEO (14000 km), operational since 1999, US company
INTRODUCING....
ASIA CELLULAR SATELLITE (ACeS)
http://www.aces.co.id
Asia Cellular Satellite
.... Asia’s first Regional Mobile Satellite Telephony System .... allowing users to & from anywhere in ACeS Asian
footprint and around the world ACeS shareholders are :
PT. Pasifik Satelit Nusantara (Indonesia) The Philippines Long Distance Telephone Company (Philippine) Jasmine International of Thailand (Thailand) Lockheed-Martin Global Telecommunications (USA)
ACeS launched ...
ACeS “Garuda 1” successfully launched on 12 February 2000 by International Launch Service (ILS)
Using “Proton” rocket from Baikonur, Kazahkstan
ACeS Network
ACeS Network
ACeS Satellite
GARUDA 1 located at 123 degree East (GEO satellite) 11,000 simultaneous telephone channels & supporting to 2
million subscribers Frequency :
service Link : L-Band (1525 - 1559 MHz Uplink & - 1626.5 - 1660.5 MHz)
Feeder Link : Ext C-Band (6425-6725 MHz up-link & 3700 - 4200 MHz down-link)
Service life : 12 years Communications payload feature two 12-meter antennas 140 satellite spot beams
Coverage
Asia Pacific (China, India, Pakistan, Indonesia, Thailand, Bangladesh, .... )
ACeS subscribers travelling outside the satellite coverage area can roam on GSM worldwide networks
Gateways
..provide interface between ACeS and other telecommunication networks (e.g PSTN and PLMN)
... Located at Jakarta, Taiwan, Thailand & Philippine
12-meter antenna
Satellite Control Facility
...monitor the Garuda satellite ...located at Batam Island,
Indonesia 15.5 meter tracking antenna
for links with the satellite
Handset
Dual Mode (satellite - GSM 900) frequency :
Satellite 1500 - 1600 MHz L-Band GSM : 900 MHz
...made by Ericsson
GARUDA 1 operational : August 2000 GARUDA 2 will launch in 2002 to cover Africa & a part
of Europe
ACeS Future Plan
THANK YOU !