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Satellite spectrum issues

Satellite spectrum issues. Chris Hose Spectrum Engineering Section RadComms 2006 11/12 December 2006 Australian Communications and Media Authority. Overview . Introduction - Why is satellite spectrum so important? ACMA Satellite Spectrum Responsibilities

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Satellite spectrum issues

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  1. Satellite spectrum issues Chris Hose Spectrum Engineering Section RadComms 2006 11/12 December 2006 Australian Communications and Media Authority

  2. Overview • Introduction - Why is satellite spectrum so important? • ACMA Satellite Spectrum Responsibilities • Satellite spectrum in Australia - the present • Current Pressures • Options and ideas for the future • Summary and Conclusion

  3. Why is satellite spectrum important? • The forte/focus of satellite services may have changed, but its importance hasn’t • Long distance point to point → area services (mobile, broadcast and navigation) • Truncated list: • Direct To Home (DTH) • Very Small Aperture Terminals (VSATs) • Private internet access • Corporate networks • Program Distribution – Free and Pay TV • Mobile Services (MobileSat, Iridium, Globstar etc) • Satellite News Gathering (SNG) • Defence • Emergency/disaster relief communications • Earth observation • Radionavigation (GPS, Galileo etc)

  4. ACMA Satellite Spectrum Responsibilities International • Satellite network filing and coordination Domestic • Planning • Regulation • Assignment • Licensing

  5. Satellite Spectrum In Australia:The Present • Established licensing arrangements: • Space Segment • Ground Segment • Satellite Bands: • L Band: 1164-1260 MHz & 1525-1660.5 MHz • S Band: 1980-2110 MHz & 2170-2300 MHz • C Band: 3400-4200 MHz & 5925-6725 MHz • Ku Band: 10.7-12.75 GHz & 13.75-14.5 MHz

  6. Ground Segment Licensing • Individual apparatus licences to authorise the operation of specific Earth stations • Allows Earth stations to be individually coordinated with other spectrum users • Generally used in ‘shared’ bands • Eg. Parts of S, C and X Bands

  7. Space Segment Licensing • Individual apparatus licences to authorise the operation of space stations • Earth stations communicating with the space station authorised by class licence • No requirement for individual coordination of Earth stations • Generally used in ‘satellite only’ bands eg. parts of Ku Band

  8. L Band • Space/Space Receive Licensing Option • Supports ubiquitous operations for RNSS and MSS in a number of bands: • RNSS: 1164-1260 MHz & 1559-1610 MHz • GPS and Galileo etc • MSS: 1610-1660.5 & 1525-1559 MHz • MobilSat, Iridium and GlobalStar etc

  9. S Band • Generally Earth/Earth Receive Licensing (SOS etc) • Shared with terrestrial services (eg. FS) • Limited parts of the band available for Space/Space Receive Licensing Option (MSS) • Major SOS operations undertaken by/on behalf of NASA and ESA etc • 2025-2110 MHz and 2200-2300 MHz

  10. C Band • Earth/Earth Receive Licensing • Shared with terrestrial services (eg. FS) • Not suitable for ubiquitous Earth station deployment • Coordination of individual Earth stations required • Receive Bands: • Extended C Band (3400-3700 MHz) • Most of 3400-3600 MHz Spectrum Licensed • 3575-3710 MHz Possible Medium Term WAS • Standard C Band (3700-4200 MHz)

  11. Ku Band • 10.7-11.7 GHz • Earth Receive Licensing • Shared with terrestrial services • Not suitable for ubiquitous Earth station deployment • 11.7-12.75 GHz • Space Licensing Option • Satellite only • Suitable for ubiquitous Earth station deployment • 14-14.5 GHz • Space Receive Licensing Option • Satellite only • Suitable for ubiquitous Earth station deployment • 13.75-14 GHz • Earth Licensing • Shared with Radiolocation, specific sharing criteria • Not suitable for ubiquitous Earth station deployment

  12. Generic Pressures • Increasing demand for spectrum → More/better sharing required • Means that spectrum use (in both frequency and geography) should be largely driven on spectrum planning grounds and not due to legacy reasons • Gateway Earth stations or SOS facilities can technically do their job away from urban areas • Whereas DTH, MS, FS P-MP need to be where the people are ie. urban areas

  13. Generic Pressures • There are good reasons why gateway type Earth stations are located near population centres: • Legacy infrastructure availability and investment • Proximity to population centres for access to staff for station maintenance etc • Cost/availability of backhauling information to where it is required or where it comes from • Clear need to address incumbent users • But do these reasons outweigh the overall spectrum efficiency costs?

  14. Pressures – S Band • Major space operation service facilities impacting on urban areas have been an ongoing planning challenge: • 3G Mobile Telephony • 2010-2025 MHz BWA • Some success in encouraging prudent sitting • More needs to be done

  15. Pressures – C Band • Historically space and terrestrial services have ‘played well’ together in the band: • FS point-point can be readily coordinated with Earth stations (and vice versa) • Trend towards FS Point-Multipoint • Less amenable to sharing • 3575-3710 MHz under consideration for WAS : • Impact of existing/future Earth stations on WAS in urban areas? • What about 3710-4200 MHz in the 10 years?

  16. Options and Ideas for the Future • Coordination with terrestrial services • Siting of Earth stations • Incumbent user considerations • NGSO v GSO licence fees • Bands shared with terrestrial services of particular interest eg: • S Band • C Band

  17. NGSO vs GSO Earth Station Spectral Denial • NGSO Earth stations generally have greater spectral denial than GSO Earth stations • Potential argument that apparatus licence fees for NGSO Earth stations should reflect their increased spectral denial • Increased fees? • Exemption for ‘good’ siting?

  18. The Future • Earth station siting and coordination review • Consultation Process • Consultation Paper • Outline aims/proposals and seek feedback • Spectrum Planning Report • Outline existing arrangements/trends/usage • Draft RALI • Coordination and siting procedures • Stakeholder Feedback • Decision/Implementation

  19. Options and Ideas • ‘Carrot and the Stick’ approach • Carrot • Favorable protection arrangements for Earth stations sited in spectrally ‘good’ locations • Concept already being discussed with Defence for certain of their Earth station sites (parallels to the RQZ concept) • Economic incentives (licence fee reductions) • Stick • Straight siting restrictions outlined in a RALI • Earth station protection levels dependent on location • Economic incentives (licence fees increases)

  20. Summary and Conclusion • Satellite enabled services are an integral and essential part of the national and international economy • Demand for spectrum is increasing • Continued pressure on all existing spectrum use, including ‘satellite’ bands • Maximising the overall public benefit means using satellite spectrum in smarter ways

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