Ka-band Rf Gateway as part of Viasat
High Capacity Satellite system
SSPI Vsat Day
21st Nov 2012
Carlos Brutti
Viasat Inc. is today the leader in
Ka Band HCS full implementation
Satellite
design
GW /
TT&C
vendor
Teleport
provider
Ter...
ViaSat Brings Your Network To Life
HCS Architecture
Subscriber
Terminals
Satellite
Connectivity
Gateways &
TTNC
Fiber
Conn...
ViaSat Brings Your Network To Life
ViaSat-1 Gateways
U.S. contiguous 48-states coverage region
Canada, Alaska, Hawaii cove...
ViaSat Brings Your Network To Life
Gateway / Core Node
ViaSat Brings Your Network To Life
Autonomous Gateway
Configuration
ViaSat Brings Your Network To Life
#1 Provider of Large Ka-Band
RF Gateways
 LATEST CONTRACTS (2012)
 Media Networks: Qt...
ViaSat Brings Your Network To Life
Ka Gateways
Current deployment map
ViaSat Brings Your Network To Life
Viasat 1 Gateway Earth Stations
ViaSat Brings Your Network To Life
Satellite Calculations Considerations
for Ka-band Satellites
Ku band Ka-band
Same
• Sat...
ViaSat Brings Your Network To Life
Interference
Traditional Satellites
Relative Importance for Traffic Capacity
EIRP G/T I...
ViaSat Brings Your Network To Life
Traffic Capacity Factors
HPA
Linearizer
Improvement
Waveguide
Loss
Antenna
Mispointing
...
ViaSat Brings Your Network To Life
9.1 m Antenna example
15-16 Mar 2011
Work
Platform
Hot Air De-ice
Monopulse Tracking
Sy...
ViaSat Brings Your Network To Life
GW antenna feature
ViaSat Brings Your Network To Life
Hub Equipment Room to Maximize
Forward Link Traffic Capacity
 Maximum forward link tra...
ViaSat Brings Your Network To Life
Monopulse Antenna Tracking to
Maximize Forward Capacity
 Very narrow Ka-band antenna
p...
ViaSat Brings Your Network To Life
Hot Air De-ice
Subreflector heated
by foam enclosed
heating strips Feed blower
uses hot...
ViaSat Brings Your Network To Life
System Diagram
COMMON HUB
9.1m ANTENNA
FEED ASSY
RECEIVE CAL SYSTEM
OUTDOOR SCU
IFL
200...
ViaSat Brings Your Network To Life
Forward Link Uplink Power Control
to Maximize Traffic Capacity
 Maximum forward link t...
ViaSat Brings Your Network To Life
Return Link Power Control to
Maximize Traffic Capacity
 Maximum return link traffic ca...
ViaSat Brings Your Network To Life
Viasat 1 Network
Operations Center
Gateway
Antenna
Satellite-Ethernet Traffic TCP/IP Se...
ViaSat Brings Your Network To Life
The End
carlos.brutti@viasat.com
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Viasat sspi 21_nov2012

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Viasat - Gateways para satélites de alta capacidade em banda Ka - Carlos Bruti

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Viasat sspi 21_nov2012

  1. 1. Ka-band Rf Gateway as part of Viasat High Capacity Satellite system SSPI Vsat Day 21st Nov 2012 Carlos Brutti
  2. 2. Viasat Inc. is today the leader in Ka Band HCS full implementation Satellite design GW / TT&C vendor Teleport provider Terminal vendor
  3. 3. ViaSat Brings Your Network To Life HCS Architecture Subscriber Terminals Satellite Connectivity Gateways & TTNC Fiber Connectivity Operations & Business Internet SurfBeam subscriber terminals High capacity spot beam satellites Unmanned remotely operated Gateway Earth Stations Fiber connectivity Google email, web hosting, portals Network operations, Business systems Denver, Colorado
  4. 4. ViaSat Brings Your Network To Life ViaSat-1 Gateways U.S. contiguous 48-states coverage region Canada, Alaska, Hawaii coverage not shown 72 UT Beams: 63 U.S. plus 9 Canada 20 Gateways: 17 U.S. plus 3 CanadaViaSat-1 (Aug 2011) 115.1°WL
  5. 5. ViaSat Brings Your Network To Life Gateway / Core Node
  6. 6. ViaSat Brings Your Network To Life Autonomous Gateway Configuration
  7. 7. ViaSat Brings Your Network To Life #1 Provider of Large Ka-Band RF Gateways  LATEST CONTRACTS (2012)  Media Networks: Qty (4) 9m Ka-Band gateways  KACST (Saudi Arabia): Qty (3) 9m Ka-Band gateways  NBN Co (Australia): Qty (20) 13.5m Ka-Band gateways  Eutelsat (France): Qty (1) 7m Ka-Band gateways  BEFORE 2012  ViaSat-1 : (17) Ka-band 7.3 meter antennas  Eutelsat KASAT : (8) Ka-band 9.1 meter Gateways  YahSat (UAE): Qty (4) 7m Ka-Band gateways  Loral: (3) Ka-band 7.3 meter antennas  O3b: (7) teleport sites with (21) Ka-band 7.3 m antenna  US Military KASTARS: (15) Ka-band 9.1 meter antenna  DirecTV: (8) Ka-band 9.1 meter antenna
  8. 8. ViaSat Brings Your Network To Life Ka Gateways Current deployment map
  9. 9. ViaSat Brings Your Network To Life Viasat 1 Gateway Earth Stations
  10. 10. ViaSat Brings Your Network To Life Satellite Calculations Considerations for Ka-band Satellites Ku band Ka-band Same • Satellite saturated EIRP, G/T, & input/output power characteristic • Satellite saturated EIRP, G/T, & input/output power characteristic • Earth station max EIRP & G/T • Earth station max EIRP & G/T • Antenna pointing error • Antenna pointing error • Intermodulation • Intermodulation Different • RF capacity for single 36 MHz transponder • Much higher RF capacity for multiple wide beams (up to 500 MHz) • ~ 20 to 50 times more RF capacity • Rain fade ~6 dB • Much higher rain fade ~ 24 dB • Interference between beams
  11. 11. ViaSat Brings Your Network To Life Interference Traditional Satellites Relative Importance for Traffic Capacity EIRP G/T Interference Spot Beam Satellites Relative Importance for Traffic Capacity EIRP G/T Interference Traditional Satellite: Satellite EIRP & G/T are primary factors for traffic capacity Spot Beam Satellite: Interference is a primary factor for traffic capacity…sometimes more significant than EIRP & G/T Controlling interference is very important to maximize traffic capacity for spot beam satellite systems
  12. 12. ViaSat Brings Your Network To Life Traffic Capacity Factors HPA Linearizer Improvement Waveguide Loss Antenna Mispointing Loss Antenna Mispointing Loss Antenna Gain Traffic Capacity ~ (HPA Power) + (Linearizer) – (Waveguide) – (Mispointing) + (Antenna Gain) ~16 % loss in traffic capacity per meter 0.08 degree beamwidth = 50 % loss in traffic capacity 9.1 m provides 26% more traffic capacity than 8.1 m
  13. 13. ViaSat Brings Your Network To Life 9.1 m Antenna example 15-16 Mar 2011 Work Platform Hot Air De-ice Monopulse Tracking System Equipment Room for RF Equipment Galvanized Steel Riser Aluminum Reflector Monopulse Tracking Feed Air Conditioning KaSAT Gateway Arganda, Spain
  14. 14. ViaSat Brings Your Network To Life GW antenna feature
  15. 15. ViaSat Brings Your Network To Life Hub Equipment Room to Maximize Forward Link Traffic Capacity  Maximum forward link traffic capacity requires minimizing transmission losses between HPA and antenna  ViaSat Ka-band antennas include an air conditioned room as part of the antenna where the HPA is installed with minimum transmission losses Forward Link Traffic Capacity 0% 20% 40% 60% 80% 100% 0 0.5 1 1.5 2 2.5 3 3.5 4 Distance between HPA & Antenna (meters) RelativeTrafficCapacity HPAs Air Conditioned Equipment Room Built into Antenna
  16. 16. ViaSat Brings Your Network To Life Monopulse Antenna Tracking to Maximize Forward Capacity  Very narrow Ka-band antenna pattern beamwidth (0.078 degrees @ 1/2 power) requires monopulse tracking to minimize uplink signal losses & maximize traffic capacity  Traditional step tracking loses too much traffic capacity Uplink Signal Strength for 72 km/h Winds Gusting to 96 km/h 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% Monopulse Antenna Tracking Steptrack Antenna Tracking %ofMaximumUplinkSignalPower Servo Control Unit Monopulse Feed
  17. 17. ViaSat Brings Your Network To Life Hot Air De-ice Subreflector heated by foam enclosed heating strips Feed blower uses hot air from plenum Circulation fans mount inside plenum for thermal stability Sp1Sp2 Sp3 Sp4 Sp5 Sp6 Sp7 Sp8 Sp9 Sp10 Sp11 Sp12 Sp13 Sp14 Sp15 Sp16 Sp17 Sp18 Sp19 Sp20 Sp21 Sp22 Sp23 Sp24 Sp25 Sp26 Sp27 Sp28 Sp29 Sp30 Sp31 Sp32 Sp33 Sp34 Sp35 10.0 70.0 °F 20 30 40 50 60 FLIR Sy s tem s  Prevents signal losses due to ice & snow  Heating for:  Main reflector  Subreflector  Feed  Uniform heating maintains reflector shape to maximize gain  Electric, natural gas, & propane versions available Thermal imaging measurements confirm reflector surface accuracy
  18. 18. ViaSat Brings Your Network To Life System Diagram COMMON HUB 9.1m ANTENNA FEED ASSY RECEIVE CAL SYSTEM OUTDOOR SCU IFL 200 ft MAX BASEBAND TRANSMIT INTERFACE FROMGATEWAYBASEBANDMODULATORS LHCP PS UPC SUBSYSTEM PS POWER METER RHCP 40 dB 40 dB 50 dB 50 dB TOGATEWAYBASEBANDDEMODULATORS M&C M&C M&C M&C 10 MHz M&C 4-PORT DIPLEXER TE21 Coupler MOUNT, TURNING HEAD TRCK RECEIVER ACU DC SUPPLIES SIGNAL DIST WORK PLATFORM W/ LADDER RISER FOUNDATION LIGHTNING ROD KIT HVAC SERVO AMPS M&C EXTERNAL M&C Telefonica RF Block Diagram Telefonica_9.1M_2Aug11.vsd Last edited: 10/6/2011 9:51 AM HUB LIGHTS HUB AC OUTLETS GROUND SYSTEM E-STOP PANEL COAX BUCINPUTSWITCHNETWORK LHC 1 LHC 2 RHC 1 RHC 2 BASEBAND RECEIVE INTERFACE LHC 1 LHC 2 RHC 1 RHC 2 TRACK BDC VIASAT PROPRIETARY INFORMATION BPF BPF FOUNDATION KIT SWITCH CONTROLLER M&C L-Band Monitor Ports M&C 3 M&C Rain Beacon TOGATEWAYBASEBAND COAX COAX HPA1 HPA3 HPA2  SIG GEN PS M&C USB DI/O DI/O DI/O DI/O DI/O DI/ODI/O DI/O NTP GPS RX 1 GPS RX 2 GPS AUTO- SWITCH 1 PPS 10 MHz NTP 10 MHz 10 MHz   10 MHz 8-way 10 MHz TEMP SENSOR M&C M&C ETHERNET SWITCH ACU 10 MHz 3 3 10 MHz 10 MHz 1 PPS 1 PPS FO HUB HVACHUB HVAC DIGITAL PHASE SHIFTER RF LHCP RF RHCP TRACKING LHCP TRACKING RHCP 50 dB 50 dB LNA CONTROLLER & POWER SUPPLY M&C Note: Switches S101-S103 are dual WG-Coax LNA1 LNA3 LNA2 LNA4 LHCP RHCP DI/O DI/O 10 MHz 10 MHz 10 MHz BDCOUTPUTSWITCHNETWORK M&C M&C M&C M&C DEHYDRATOR M&C DRY AIR DISTRIBUTION TO WG 10 MHz SUPPLY RETURN MULTI-BAND BUC BUC 1 ∑ 10 MHz M&C 10 MHz 10 MHz To CMS MULTI-BAND BDC BDC 2 BDC 1 HOIST EQUALIZERPANEL BUC 2 MULTI-BAND BUC BUC 1 ∑ 10 MHz M&C BUC 2 MULTI-BAND BDC BDC 2 BDC 1 MULTI-BAND BDC BDC 2 BDC 1 MULTI-BAND BUC BUC 2 BUC 1 ∑ 10 MHz M&C L-Band DE-ICE SUBSYSTEM RE- FLECTOR DEICE SUB- REFLECT OR DEICE FEED HORN DEICE DEICE POWER DISTRIBUTION DEICE CONTROLLER PS BUC 3 LHC 3 RHC 3 RHC 3 LHC 3 L-Band Monitor Ports BUC 3 BUC 3 BDC 3 BDC 3 BDC 3 Notes: 1. Third upconverter (BUC), downconverter (BDC), and associated IFL cables do not apply to USA sites. Refer to proposal for details. 1 1 1 1 1 1 1 1 1 1 AMP BPF ETHERNET SWITCH RF ELEMENT MANAGEMENT SYSTEM ` Frequency Upconverters Linearized HPAs Monopulse Tracking Deicing LNAs 9.1 m Antenna Remote M&C Frequency Reference IFL Cables Return Link Power Control Forward Link Power Control Frequency Downconverters Pressurization
  19. 19. ViaSat Brings Your Network To Life Forward Link Uplink Power Control to Maximize Traffic Capacity  Maximum forward link traffic capacity requires maintaining the optimum carrier to interference (“C/I”) ratio between power of desired signal and interfering signals  ViaSat’s unique forward link power control maintains the optimum C/I by controlling uplink power of all gateway stations  Combination of ViaSat’s RF gateway & SurfBeam 2 baseband equipment  Eliminates uplink power variations due to upchain equipment temperature & aging gain variations  Boosts uplink power to satellite to mitigate rain fades Forward Link Power Control ViaSat RF Gateway HPAUpconverter SurfBeam 2 Modems SurfBeam 2 Element Mgt System Uplink Power Control Commands Desired signal Signals from other gateway stations C/I
  20. 20. ViaSat Brings Your Network To Life Return Link Power Control to Maximize Traffic Capacity  Maximum return link traffic capacity requires maintaining the optimum carrier to interference (“C/I”) ratio between power of desired signal and interfering signals  ViaSat’s unique return link power control maintains the optimum C/I by controlling uplink power of all user terminals  Combination of ViaSat’s RF gateway & SurfBeam 2 baseband equipment  Measures & commands uplink power from user terminals to yield a constant value at the satellite  Eliminates power level uncertainties due to gateway equipment gain variations Desired signal Signals from other user terminals C/I
  21. 21. ViaSat Brings Your Network To Life Viasat 1 Network Operations Center Gateway Antenna Satellite-Ethernet Traffic TCP/IP Services Local Element Manager SNMP traps MIB values Configuration files E V E N T D B System Manager Views System Manager Views System Manager Views Entire network is remotely managed from NOC Real-time Status of Customers Remote Management of Gateways Integrated Performance, Provisioning and Billing Network Operations Center VPN ViaSat Gateways / Core Nodes
  22. 22. ViaSat Brings Your Network To Life The End carlos.brutti@viasat.com

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