WINDS. June, Japan Aerospace Exploration Agency (JAXA) (Wideband Internetworking Engineering Test and Demonstration Satellite)

Transcription

1 The 21 st Pacific Science Congress Okinawa Asia Pacific Telemedicine Initiative, June 15-16, 2007, Okinawa, Japan WINDS (Wideband Internetworking Engineering Test and Demonstration Satellite) June, 2007 (JAXA) 0

2 JAXA Communications Satellite Project ETS-VIII for Mobile network WIND for Fixed network QZSS for Positioning

3 Objectives of WINDS program WINDS was established based upon e-japan program of Japanese government in order to contribute a digital-divide free comfortable communication society by complementary utilization of ground based and satellite based communication network which has the following advantage: Wide Coverage, Broader Accessibility and Survivability against natural disaster JAXA has been developing WINDS collaborating with National Institute of Information and Communication Technology (NICT). JAXA: Total Network System Satellite System, Multi-Beam Antenna, Multi-Port Amplifier, Active Phased Array Antenna Ground System: Network Management Center, Regenerative Ground Terminals (USAT, HDR-VSAT) Satellite Tracking and Control System NICT: Onboard ATM Baseband Switching Router Bent-pipe Ground Terminals (LET, SDR-VSAT) 2

4 Objectives of WINDS program 1. Establishment of ultra-high-speed fixed satellite communications technologies High-Speed communication rate Realization of ultra-high-data rate communication. 155 Mbps for home use (small terminal with 0.45m diam. class antenna ) 1.2Gbps for business use (large station with 5m diam. class antenna ) Wide coverage Ultra-high-data rate communication in a wide area of Asia /Pacific region Establishment of total system for high-speed satellite based communication network which realizes flexible user assignment. 2. Verification of ultra-high-data rate satellite based communications network Verification of management of the ultra-high-data rate satellite based communication network and promotion of experiments. 3

5 Features of WINDS (1) High speed data communication with small terminals by high EIRP with Ka-band multi-beam antenna and 8 parallel TWTA s WINDS Antenna Diameter of Ground Terminal Conventional Satellite 5m Tx & Rx 1.2Gbps 1.2m 0.45m Tx & Rx 155Mbps Rx 155Mbps Tx 1.5Mbps 2.4m 0.75m 4

6 Features of WINDS (2) ビーム A ビーム B ビーム C Efficient Utilization of Satellite Resource by Onboard Switching Router. A B C B A B B B B B WINDS A A B B C C Conventional Satellite XPNDR Onboard Switching Router Deletion of empty cells Prioritize packets in case of congestion c B A 5

7 Features of WINDS (3) Flexible power assignment by Ka-band high power Multi-Port Amplifier (MPA) and Multi-Beam Antenna (MBA) Effective power distribution depending upon requirements of compensation of rain attenuation and utilization demands Required power for clear sky Required power for rainy area Effective RF power distribution TX power :fixed TX power : adjustable Rainy area Clear sky area Rainy area Clear sky area Conventional Satellite Using MPA WINDS 6

8 WINDS Launch Schedule Satellite Bus Orbital Location Generated Power Mass Frequency Band EIRP G/T On-Board SW Bent-Pipe Relay End of FY2007 by H-IIA t, Zero-Momentum 3-Axis Stabilized 143 E (or 144.5, 146 E) 5,200 W 4,800 kg (launch), 2,400 (dry) GHz (uplink) GHz (downlink) 67.3 dbw (FMBA), 55.0 dbw (APAA) 16.3 db/k (FMBA), 7.1 db/k (APAA) 1.5/6/24/51/155 Mbps (uplink) 155 Mbps (downlink) ATM Switching : 2.5 Gbps BW : 1.1 GHz Gbps / transponder 7

9 External View of WINDS Multi-beam antenna reflector for domestic coverage (2.4 mø) Multi-beam antenna reflector for S.E. Asia coverage (2.4 mø) On-board switching router 2.4-ton satellite bus Ka-band active phased array antenna (APAA) 8

10 Mission Configuration Fixed MBA (S.E. Asia) Fixed MBA (Japan) RX Active Phased Array Antenna 12 7 RX RF SW & LNA D/C & RX IF SW MTX D/C BPF-W BPF-W BPF-N BPF-N ATM-based Baseband Switching Subsystem (ABS) TX IF SW MTX & U/C U/C Kaband Multiport Amp. TX RF SW TX Active Phased Array Antenna 7 12 SW Controller 9

11 MBA (Multi Beam Antenna) 10

12 APAA (Active Phased Array Antenna) 650mm 540mm 290mm 470mm Active Phased Array Antenna (APAA) can hop its beams to required points 2msec interval in order to cover the wide area. Tx APAA Rx APAA 11

13 WINDS Service Coverage * Fixed beams cover Japan and several S. E. Asian areas * Scanning beams by APAA cover other visible area 12

14 Ground Terminals vs Data Rate Uplink WINDS satellite Downlink LET * >5mφ Bent-pipe ~622Mbps Gbps Bent-pipe ~622Mbps LET * >5mφ SDR-VSAT * 2.4mφ SDR-VSAT * 2.4mφ HDR-VSAT 1.2mφ 1.5~155Mbps 1.5-6Mbps ABS * DEM/ ATMS/ MOD 155Mbps 155Mbps HDR-VSAT 1.2mφ USAT 45cmφ USAT 45cmφ MBA Spot beam Area *:by NICT 13

15 WINDS Ground Station Area Beam Degenerative (155Mbps) Antenna Diameter Non Degenerative (622Mbps) Domestic (MBA/MPA) 45cm *2 /1.2m 2.4m Overseas (MBA/MPA) 45cm *2 /1.2m 2.4m 1beam working 2.4m 7m Honolulu (APAA) 2 beam working 5m 15m Sydney (APAA) 1beam working 2 beam working 2.4m 5.5m 3.8m 11m 14

16 WINDS Network Ground System WINDS Satellite 155Mbps Ka Band 1.5M/6Mbps USB CMD/TLM USAT 端末機端末機 ODU/IDU ODU/IDU 155Mbps ~622Mbps ~1.2Gbps 155Mbps Beacon Station Tracking & Control System HDR-VSAT 1.5M/6Mbps SDR-VSAT LET USAT A B S ワークステーション SPOC SOPS STAD SIMS INIT :by NICT Network Management Center 15

17 Ground System (Satellite Control System) 1 Network Management Center The network management center is used to manage the communication network and control on-board communication equipments. The Center is in the final stage of system integration at Tsukuba space center. 2 The beacon station The beacon station transmits the reference beacon to control a multi-beam antenna for Japan area. The beacon station was built in Okinawa. 16

18 Ground System (User Terminal) WINDS HDR-VSAT WINDS USAT Frequency band Transponder mode Data rate Antenna diameter TX power EIRP G/T Modulation User I/F Weight Power consumption HDR-VSAT U/L 27.5GHz GHz D/L 17.7GHz GHz Regenerative SW with ABS U/L 155 Mbps D/L 155 Mbps 1.2 m 100 W > 66.9 dbw > 19.0 db/k Gigabit Ether(1000Base-T) 250kg 1100W QPSK USAT U/L Mbps D/L 155 Mbps 0.45 m 5-10 W > 48.8 dbw > 11.5 db/k 43kg 700W 17

19 Interface of WINDS User terminals Outdoor ODU-IDU Private Connection Cable Indoor HUB ODU IDU 1000Base-T PC Cable USER 18

20 Potential Application of WINDS Back up for Back bone in case of contingency Back Bone Patch Access Patch In case of disaster: Image of stricken area Information to suffers IX ISP Temporary link for special events High speed Internet service with small terminals Digital Divide Free Multicast E-learning among multi points Broad Band Internet Contents distribution 19

21 Milestones for WINDS Experiments Year Pilot Experiment RFP Launch WINDS Request for proposal concerning Application Experiments using WINDS to be announced by Ministry of Internal Affairs, and Communications (MIC) Basic Experiment Application Experiment Practical Use 20

22 Current Status of WINDS program Main reflector deployment test: to verify the firm on-orbit deployment of the main reflector Sinusoidal vibration test: to verify that the MBA can survive in the launch vibration environment. Up to 100 G acceleration was applied on the MBA. WINDS system in the vacuum chamber at the Tsukuba Space Center. After going through a series of tests, WINDS is scheduled to be transported to Tanegashima island at the end of October, 2007 for launch site operations. 21

23 Pilot Experiment Program Prior to the operation of WINDS, some precursor tests by using the existing operational satellite were carried out as a pilot experiment program in order to investigate what kind of technology is needed for the satellite application, to explore new application of the satellite and to prepare for the WINDS actual experiments. - IPv6 multicast experiment - High speed data transmission in the multicast mode by using Ka-band satellite - Aircraft communications experiment for disaster management system - Ship to/from ground communications experiment - Disaster management experiments - Digital divided testing - Field education experiment - e-learning between Japan and Asian countries experiments - Mobile hospital experiment - Ultrasonic diagnosis Test 22

24 PILOT Experiments e-learning (Example of Mesh-type network) WINDS Asia Institute of Technology (Bangkok) Tokyo Campus Malaysia Multimedia University (Malaysia) Tsukuba University Image of Tokyo Campus (Lecturer) Image of Tsukuba University (Images of class room, text, etc.) Materials Chat system Screen Image 23

25 PILOT Experiments Gathering information by wearable camera Disaster-stricken Area WINDS Headquarters Portable Terminal Images from the site Portable WINDS Terminal (Disaster-stricken Area) Trace of cameraman 24

26 PILOT Experiments Mobile Hospital mφ Mobile Antenna (Patient site) Medical image CT images, Ultrasonic images Real -time diagnosis and medical examination used in TV meeting system. Shinshu University Hospital and Cooperate organization 1.8 m φ Fix Antenna (Hospital) CT images Image of Abdominal ultrasonic Modality operation by doctors Modality operation by doctors TV meeting system for Real time diagnosis DICOM viewer picture for conference Simultaneous remote conference between doctors. CT Diagnosis Vehicle or Ultrasonic Diagnosis Vehicle Shinshu University Hospital City hospital 25

27 PILOT Experiments Mobile Clinic Project with Satellite Communication JCSAT-1B 1.5 Mbps 1.5 Mbps 1.5 Mbps 1.8mφfixed antenna 1.8mφfixed antenna Hino Hospital 0.75mφportable antenna Patient s Home Tottori University Hospital 診断レポート Acquisition of medical information, telemedicine Request for telediagnosis Tele-conference Access to medical information from Hino Hospital Capturing patient s pictures taken by digital camera for telediagnosis Telediagnosis (interpretation of radiograms, findings) Medical support Tele-conference 26

28 WINDS Experiment Plan for Telemedicine Digital X-ray image Database WEB1000 Server Portal Site & Report Server DICOM HTTPS DICOM DICOM HTTPS HTTPS HTTPS Communcatio n Database X-ray Monitor Vertual Gateway X-ray Monitor DICOM DICOM: Digital Imaging and Communication in Medicine HTTPS: Hypertext Transfer Protocol Security X-ray Monitor 27

29 Concept of Disaster Management using Space Technology in Asia Pacific region QZSS ETS-VIII WINDS Earth observation satellites Disaster monitoring Information delivering to personal terminals Data collection Information center Residents in disaster areas Ground observation network Providing services directly to personal terminals in disaster areas 28