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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 • 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 • 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 • 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 • 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) • 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 • 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