Archived—Proposed Revisions to the Canadian Table of Frequency Allocations (2009 Edition)

A3 (AI 1.5) – Spectrum Requirements for Aeronautical Telecommand and High Bit-Rate Aeronautical Telemetry

Background

This agenda item addressed a growing demand for spectrum allocated for aeronautical telemetry and associated telecommand. There was an increasingly significant shortfall in spectrum necessary to conduct aeronautical telemetry. The shortfall was exacerbated by the loss of telemetry spectrum diverted to other applications and services. Without access to additional spectrum, aeronautical development would be subject to escalating delays and costs, and the growth of the aerospace industry would be impaired (including equipment manufacturers, civilian programs and test ranges, as well as airlines).

Aeronautical mobile telemetry (AMT) is an application within the aeronautical mobile service. The new allocations enabling aeronautical mobile telemetry applications include the band 4400-4940 MHz through the new footnote 5.440A, the band 4825-4935 MHz through Mod 5.442, the band 5091-5150 MHz through the new footnote 5.444B and the band 5925-6700 MHz through the new footnote 5.457C. These aeronautical mobile telemetry applications will only be for transmission of telemetry information for flight test purposes in the air-to-ground direction inasmuch as telecommand functions (i.e. ground-to-air transmissions) can be accommodated in existing bands. Consequently, in these bands, AMT in the aeronautical mobile service is not considered an application of a safety service as defined in RR No. 1.59. These international footnotes are instrumental in the establishment of spectrum sharing conditions and Canada-US cross-border coordination arrangements. The department plans to hold public consultations in the near future to develop spectrum utilization policies to address the spectrum requirements of the aeronautical community and AMT in particular.

Hence, AMT applications in new spectrum will not require the level of protection associated with operations in existing telemetry bands. However, the new AMT application may share spectrum with other services such as fixed and fixed satellite services. The World Radio Conference has considered ITU-R studies that have determined conditions under which AMT for flight test purposes can be implemented without adversely affecting the operation of existing systems and allocated services.

Summary of Proposed Changes to the Canadian Table

4 400-4 990 MHz

4 400-4 500

FIXED
MOBILE 5.440A

C25

4 500-4 800

FIXED
FIXED-SATELLITE (space-to-Earth) 5.441
MOBILE 5.440A

C16A C25

4 800-4 825

FIXED
MOBILE 5.440A
Radio astronomy

C25

4 825-4 835

FIXED
MOBILE 5.440A MOD 5.442
RADIO ASTRONOMY 5.443

MOD 5.149 5.443 C25

4 835-4 950

FIXED
MOBILE 5.440A
Radio Astronomy

C25

4 950-4 990

FIXED
MOBILE MOD 5.442
RADIO ASTRONOMY 5.443

MOD 5.149 5.339 5.443

5 030-6 700 MHz

5 030–5 1505 091

AERONAUTICAL RADIONAVIGATION

5.367 MOD 5.444 5.444A

5 091-5 150

AERONAUTICAL MOBILE 5.444B
AERONAUTICAL RADIONAVIGATION

5.367 MOD 5.444 MOD 5.444A

5 150-5 250

AERONAUTICAL RADIONAVIGATION
FIXED-SATELLITE (Earth-to-space) 5.447A
MOBILE except aeronautical mobile MOD 5.446A 5.446B

5.446 5.447B 5.447C C39B

 

5 650-5 725

MOBILE except aeronautical mobile MOD 5.446A 5.450A
RADIOLOCATION
Amateur
Space Research (deep space)

5.282 C39B

 

5 925-6 700

FIXED
FIXED-SATELLITE (Earth-to-space) 5.457A
MOBILE 5.457C

MOD 5.149 5.440 5.458 C39D

MOD 5.149 See Section F2.
ADD 5.440A In Region 2 (except Brazil, Cuba, French Overseas Departments and Communities, Guatemala, Paraguay, Uruguay and Venezuela), and in Australia, the band 4 400-4 940 MHz may be used for aeronautical mobile telemetry for flight testing by aircraft stations (see No. 1.83). Such use shall be in accordance with Resolution 416 (WRC-07) and shall not cause harmful interference to, nor claim protection from, the fixed-satellite and fixed services. Any such use does not preclude the use of these bands by other mobile service applications or by other services to which these bands are allocated on a co-primary basis and does not establish priority in the Radio Regulations. (WRC-07)
MOD 5.442 In the bands 4 825-4 835 MHz and 4 950-4 990 MHz, the allocation to the mobile service is restricted to the mobile, except aeronautical mobile, service. In Region 2 (except Brazil, Cuba, Guatemala, Paraguay, Uruguay and Venezuela), and in Australia, the band 4 825-4 835 MHz is also allocated to the aeronautical mobile service, limited to aeronautical mobile telemetry for flight testing by aircraft stations. Such use shall be in accordance with Resolution 416 (WRC-07) and shall not cause harmful interference to the fixed service(WRC-07)
MOD 5.444 See Section A4.
MOD 5.444A See Section A4.
ADD 5.444B See Section A4.
MOD 5.446A The use of the bands 5 150-5 350 MHz and 5 470-5 725 MHz by the stations in the mobile, except aeronautical mobile, service shall be in accordance with Resolution 229(WRC-03)(WRC-0307)
ADD5.457C In Region 2 (except Brazil, Cuba, French Overseas Departments and communities, Guatemala, Paraguay, Uruguay and Venezuela), the band 5 925-6 700 MHz may be used for aeronautical mobile telemetry for flight testing by aircraft stations (see No. 1.83). Such use shall be in accordance with Resolution 416 (WRC-07) and shall not cause harmful interference to, nor claim protection from, the fixed-satellite and fixed services. Any such use does not preclude the use of these bands by other mobile service applications or by other services to which these bands are allocated on a co-primary basis and does not establish priority in the Radio Regulations. (WRC-07)

Discussion

The Department believes that the proposed changes to the Canadian Table will help address the needs for AMT for flight test purposes in Canada while providing protection to the existing services and systems. It will also provide adequate regulatory mechanisms to ensure the protection of Canadian systems from AMT for flight test purposes to be deployed by the United States in border areas in the 4/6 GHz band.

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