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

A4 (AI 1.6) - Aeronautical Mobile (R) Service in Bands 108– MHz - 6 GHz and Modernization of Civil Aviation Systems

Background

Resolution 414 (WRC-03)

Existing AM(R)S bands are nearing saturation in high-traffic areas. In addition, new applications and concepts in air traffic management put further pressure on existing AM(R)S bands that do not conform to the definition of aeronautical radionavigation in the Radio Regulations.

ITU-R Working Party 8B* (WP 8B) and the International Civil Aviation Organization (ICAO) developed a draft operational concept, as well as technology selection criteria and procedures for new aviation technology requiring two distinct categories of AM(R)S spectrum. The first category for surface applications at airports could support high data throughput over moderate transmission distances. There is a high degree of reuse of this spectrum. The second category for bidirectional air-to-ground applications could support a moderate data throughput over longer propagation distances out to radio line-of-sight. These applications require a number of distinct channels to allow for sector-to-sector assignments.

WRC-07 addressed these issues under Agenda Item 1.6 and Resolution 414 (WRC-03). Consequential modifications to No. 5.444A were also considered.

Summary of Proposed Changes to the Canadian Table

108-137 MHz

108-117.975

AERONAUTICAL RADIONAVIGATION
MOD 5.197A

117.975-137

AERONAUTICAL MOBILE (R)
MOD 5.111 5.198 5.199 MOD 5.200 5.203
960-1 164 MHz

960-1 164

AERONAUTICAL MOBILE (R) 5.327A
AERONAUTICAL RADIONAVIGATION 5.328
5 030-5 150 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

MOD 5.111 See Section E2.
MOD 5.197A Additional allocation: the band 108-117.975 MHz may also be used by is also allocated on a primary basis to the aeronautical mobile (R) service on a primary basis, limited to systems that transmit navigational information in support of air navigation and surveillance functions operating in accordance with recognized international aeronautical standards. Such use shall be in accordance with Resolution 413 (RevWRC-037) and shall not cause harmful interference to nor claim protection from stations operating in the aeronautical radionavigation service which operate in accordance with international aeronautical standards. The use of the band 108-112 MHz by the aeronautical mobile (R) service shall be limited to systems composed of ground-based transmitters and associated receivers that provide navigational information in support of air navigation functions in accordance with recognized international aeronautical standards. (WRC-0307)
SUP 5.198 Additional allocation: the band 117.975-136 MHz is also allocated to the aeronautical mobilesatellite (R) service on a secondary basis, subject to agreement obtained under No. 9.21. (WRC-97) (WRC-07)
SUP 5.199 See Section E2.
SUP 5.203 In the band 136-137 MHz, existing operational meteorological satellites may continue to operate, under the conditions defined in No. 4.4 with respect to the aeronautical mobile service, until 1 January 2002. Administrations shall not authorize new frequency assignments in this band to stations in the meteorological satellite service. (WRC-97) (WRC-07)
ADD 5.327A  The use of the band 960-1 164 MHz by the aeronautical mobile (R) service is limited to systems that operate in accordance with recognized international aeronautical standards. Such use shall be in accordance with Resolution 417 (WRC-07). (WRC-07)
MOD 5.444 The band 5 030-5 150 MHz is to be used for the operation of the international standard system (microwave landing system) for precision approach and landing. In the band 5 030-5 091 MHz, the requirements of this system shall take precedence over other uses of this band. For the use of the band 5 091-5 150 MHz, No. 5.444A and Resolution 114 (Rev. WRC-03) apply. (WRC-0307)
MOD 5.444A Additional allocation: the band 5 091-5 150 MHz is also allocated to the fixed-satellite service (Earth-to-space) on a primary basis. This allocation is limited to feeder links of non-geostationary satellite systems in the mobile-satellite service and is subject to coordination under No. 9.11A.

In the band 5 091-5 150 MHz, the following conditions also apply:

  • prior to 1 January 2018, the use of the band 5 091-5 150 MHz by feeder links of non-geostationary-satellite systems in the mobile-satellite service shall be made in accordance with Resolution 114 (Rev. WRC-03);
  • prior to 1 January 2018, the requirements of existing and planned international standard systems for the aeronautical radionavigation service which cannot be met in the 5 000 – 5 091 MHz band, shall take precedence over other uses of this band;
  • after 1 January 2016, no new assignments shall be made to earth stations providing feeder links of non-geostationary mobile-satellite systems;
  • after 1 January 2018, the fixed-satellite service will become secondary to the aeronautical radionavigation service. (WRC-0307)
ADD 5.444B The use of the band 5 091-5 150 MHz by the aeronautical mobile service is limited to:
  • systems operating in the aeronautical mobile (R) service and in accordance with international aeronautical standards, limited to surface applications at airports. Such use shall be in accordance with Resolution 748 (WRC-07);
  • aeronautical telemetry transmissions from aircraft stations (see No. 1.83) in accordance with Resolution 418 (WRC-07);
  • aeronautical security transmissions. Such use shall be in accordance with Resolution 419 (WRC-07)(WRC-07)

Discussion

The Department believes that the proposed changes to the Canadian Table will satisfy the needs for Aeronautical Mobile (En route) Service (AM(R)S) growth and requirements while providing protection to the existing services and systems. The Department also believes that the modification of the status of microwave landing systems (MLS) in the band 5 091-5 150 MHz is acceptable to permit the introduction of the new AM(R)S systems, as the protection of future MLS deployment has been considered in the applicable Resolutions.

A5 (AI 1.9) – to review the technical, operational and regulatory provisions applicable to the use of the band 2 500-2 690 MHz by space services in order to facilitate sharing with current and future terrestrial services without placing undue constraint on the services to which the band is allocated.

The use of the 2 500 MHz band in Canada will be the subject of a forthcoming consultation that will address, among other issues, proposals for modifications to the Canadian Table, including the adoption of WRC-07 decisions related to the 2 500 MHz band.


*As a result of ITU-R re-structuring, ITU-R WP 8B is now known as ITU-R WP 5B

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