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Status of ITU-R Work On Agenda Item 1.6 M. Biggs September, 2006 Agenda Item 1.6 World Radiocommunication Conference 2007Agenda Item 1.6

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Status of itu r work on agenda item 1 6 l.jpg

Status of ITU-R Work On Agenda Item 1.6

M. Biggs

September, 2006


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Agenda Item 1.6

  • World Radiocommunication Conference 2007Agenda Item 1.6

    • To consider additional allocations for the aeronautical mobile (R) service in parts of the bands between 108 MHz and 6 GHz, in accordance with Resolution 414 (WRC‑03) and …

  • Studies assigned to ITU-R Working Party 8B

  • Latest WP8B (September 4-13, 2006) meeting has resulted in text for the Conference Preparatory Manual (CPM) on AI1.6


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Results of studies

  • Two distinct categories of AM(R)S spectrum are required.

    • The first – for surface applications at airports – is distinguished by a high data throughput, however only moderate transmission distances and it is expected that a single resource can be shared at multiple geographic locations.

    • The second category, like the current Very High Frequency (VHF) AM(R)S, will require longer propagation distances (e.g. out to radio line-of-sight), moderate bandwidth, and a number of distinct channels to allow for sector-to-sector assignments.

  • Initial estimates of potential spectrum requirements have been determined taking into account evolving aeronautical applications, and integration of a new system on an aircraft. The estimates are:

    • approximately 60-100 MHz for surface applications at airports, and

    • approximately 60 MHz for radio line-of-sight applications.


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Bands proposed

  • portions of the band 108-117.975 MHz

    • 112 or 116 to 117.975 MHz

  • all or portions of the band 960-1164 MHz

    • 960 to 1024 or 1164 MHz

  • all or portions of bands in the 5 000-5 150 MHz frequency.

    • 5000-5010 MHz, 5010-5030 MHz and/or 5030 or 5091 to 5150 MHz

  • No single band will accommodate all of the identified AM(R)S requirements

    • allocations will be required for multiple bands in order to fully satisfy the Agenda Item.


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Aeronautical Security System

  • Consistent with consideringsd), f) and g) of Resolution 414 (WRC-03), the 5 091‑5 150 MHz band is also being considered to support new aviation security requirements.

  • Aeronautical security transmissions ensure confidential and secure communications between aircraft and ground, principally during unlawful disruption, hijacking or subversion of flight.

    • Security requirements could include video and voice monitoring and download of security data.

  • Requires a complementary aeronautical mobile service (AMS) allocation to that band.


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Status

  • WP8B agreed on CPM text addressing all of the bands

  • Disagreements on band edges addressed as separate methods

  • Aeronautical Security system is its own method

  • Seems to be general agreement on getting allocations in XX-117.975 MHz; 960-YY MHz and ZZ-5150 MHz.

  • 5000-5010 MHz and 5010-5030 MHz have less agreement due to potential impact on proposed radionavigation satellite service (RNSS) for those bands.


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Next Steps

  • Aviation needs to continue to work within their administrations to support AI1.6 bands

  • Use ACP WGF to “spread the word”

  • Need special emphasis on 5000-5010 and 5010-5030 MHz bands

    • Wider distribution of study results – indicates feasibility of compatibility

    • Emphasis that non-compatibility cannot be shown since neither system has been fully defined.


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