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SPECTRUM MANAGEMENT 2004 National Spectrum Managers Association Satellite Spectrum Management Issues. Carlos M. Nalda May 19, 2004. Satellite Spectrum Management Issues. Ku-band Aeronautical Mobile-Satellite Service (“AMSS”) Issues Earth Stations On Board Vessels (“ESVs”)

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SPECTRUM MANAGEMENT 2004National Spectrum Managers AssociationSatellite Spectrum Management Issues

Carlos M. Nalda

May 19, 2004

satellite spectrum management issues
Satellite Spectrum Management Issues
  • Ku-band Aeronautical Mobile-Satellite Service (“AMSS”) Issues
  • Earth Stations On Board Vessels (“ESVs”)
    • Ku-band versus C-band
  • Unlicensed Use of the 3650-3700 MHz FSS Band
  • Intelligent Transportation Service (“ITS”)/Digital Short-Range Communications (“DSRC”) Use of the 5.9 GHz Band
ku band amss issues
Ku-band AMSS Issues
  • International Developments
    • WRC-03 adopted a global, secondary AMSS allocation in the 14.0-14.5 GHz FSS uplink band; downlink AMSS operations on an unprotected basis
    • 2003 Radiocommunication Assembly adopted Recommendation ITU-R M.1643, which sets forth technical and regulatory requirements for Ku-band AMSS systems
  • Domestic Developments
    • FCC allocated the 14.0-14.5 GHz Band to AMSS on a secondary basis
    • Pending petition for rulemaking to adopt AMSS licensing and service rules
    • One licensed AMSS system – Connexion by Boeing – authorized subject to compliance with Rec. M.1643 and VSAT routine licensing values
    • One pending AMSS system – the ARINC SKYLink system
esvs ku band versus c band
ESVs – Ku-Band versus C-Band
  • Spectrum Sharing Environments Are Quite Different
    • C-band ESVs must address incumbent terrestrial uses (inland, coastal, Gulf of Mexico fixed links)
    • Ku-band ESVs have far fewer limitations
  • Co-Primary Regulatory Status for ESV Operations
    • Coordination with existing FS stations
    • Protection of future FS operations and USG secondary operations
  • Disparity Between Ku-band ESV and AMSS allocations
    • Potentially same transponders/same system but different regulatory status
    • Potentially affects international coordination and regulatory certainty
unlicensed use of the 3650 3700 mhz band
Unlicensed Use of the 3650-3700 MHz Band
  • Notice of Proposed Rulemaking – April 23, 2004
  • 3650-3700 MHz band -- FSS downlink band for international services
  • Wireless Internet service providers (“WISPs”) to provide wireless broadband services to rural areas
    • Fixed – 25 W EIRP; exclusion zone of 180 km within +/- 15° of antenna boresight, 25 km in all other directions
    • Non-fixed – 1 W EIRP; “listen-before-talk” technology to monitor FSS transmit band and reduce power based on the strength of the received signal
unlicensed use of the 3650 3700 mhz band cont d
Unlicensed Use of the 3650-3700 MHz Band (cont’d)
  • Many Unanswered Questions
    • Existing authority to communicate with multiple satellites
    • Future reorientation of earth stations
    • Future deployment of new earth stations
  • Should Unlicensed Users Be Permitted To Restrict or Preclude Licensed Operations??
  • A Potentially Dangerous Trend
    • Does the technology work?
    • How do regulators/licensed users enforce?
    • Are any licensed bands safe?
      • May 13, 2004 – Public notice of an NPRM to allow unlicensed use of unused TV channels by WISPs
its dsrc use of the 5 9 ghz band
ITS/DSRC Use of the 5.9 GHz Band
  • FCC Adopted Rules for ITS/DSRC Use of the 5.850-5.925 GHz Band on a Co-primary Basis
    • Geographic licensing with a registration requirement for RSUs
    • Licensing by rule for mobile units
    • Adopted an ITS standard for equipment based on the 802.11 series of standards
  • Interference Scenario is FSS into ITS RSUs
    • Technical studies underway to address RSU deployment issues
  • ITS/DSRC Deployment Could Potentially Restrict or Preclude Earth Station Deployment