Consultation on Amendments to SRSP-520, Technical Requirements for Fixed and/or Mobile Systems, Including Flexible Use Broadband Systems, in the Band 3450-3650 MHz

Standard Radio System Plan SRSP-520, issue 1, Technical Requirements for Fixed and/or Mobile Systems, Including Flexible Use Broadband Systems, in the Band 3450-3650 MHz, dated July 2020 replaced SRSP-303.4, Technical Requirements for Fixed Wireless Access Systems Operating in the Band 3475-3650 MHz, issue 3. SRSP-520 sets out the minimum technical requirements for the efficient use of the band 3450-3650 MHz and applies to all fixed and mobile systems, including flexible use broadband systems, operating in the band. However, as indicated in section 5 of SRSP-520, specific provisions of SRSP-303.4, issue 3, continue to apply for fixed spectrum licences issued prior to June 2019, and for fixed spectrum licences issued after June 2019 as a result of the conversion of existing fixed spectrum licences from Tier 4 to Tier 5 licence areas.

SRSP-520, issue 2, imposes measures to address the protection of radio altimeters operating in the frequency band 4200-4400 MHz from harmful interference.

Issued under the authority of
the Minister of Innovation, Science and Industry

Martin Proulx
Director General
Engineering, Planning and Standards Branch

1. This Standard Radio System Plan (SRSP-520) replaces SRSP-303.4, Technical Requirements for Fixed Wireless Access Systems Operating in the Band 3475-3650 MHz, issue 3. SRSP-520 sets out the minimum technical requirements for the efficient use of the band 3450-3650 MHz (3500 MHz band) and applies to all fixed and mobile systems, including flexible use broadband systems, operating in the band. (“Flexible use” refers to deployment of mobile and/or fixed services.) However, as indicated in section 5 of SRSP-520, specific provisions of SRSP-303.4, issue 3, continue to apply for fixed spectrum licences issued prior to June 2019, and for fixed spectrum licences issued after June 2019 as a result of the conversion of existing fixed spectrum licences from Tier 4 to Tier 5 licence areas.

2. This SRSP is intended to aid in the design of radio systems and specifies the technical characteristics relating only to efficient spectrum usage; it is not to be regarded as a comprehensive specification for equipment design and/or selection.

3. This SRSP is based on current and planned technologies being considered by service provider(s) for implementing flexible use broadband systems in Canada. Revisions to this SRSP will be made as required.

4. Notwithstanding the fact that a system satisfies the requirements of this SRSP, Innovation, Science and Economic Development Canada (ISED) may require adjustments to radio and auxiliary equipment in radio stations whenever harmful interference is caused to other radio stations or systems. “Harmful interference,” as defined in the Radiocommunication Act, means an adverse effect of electromagnetic energy from any emission, radiation or induction that (a) endangers the use or functioning of a safety-related radiocommunication system; or (b) significantly degrades or obstructs, or repeatedly interrupts, the use or functioning of radio apparatus or radio-sensitive equipment.

5. The arrangements for non-standard systems are outlined in Spectrum Utilization Policy SP Gen, General Information Related to Spectrum Utilization and Radio Systems Policies.

6. ISED should be advised when potential conflict between radio systems cannot be resolved by the parties concerned. After consultation with these parties, ISED will determine what modifications need to be made and establish a schedule for these modifications in order to resolve the conflict.

7. ISED may require licensees to use receiver selectivity characteristics that provide improved rejection of harmful interference.

8. Equipment operating under flexible use licences in the 3450-3650 MHz band must be certified in accordance with the latest issue of Radio Standards Specification RSS-192, Flexible Use Broadband Equipment Operating in the Band 3450-3650 MHz. Equipment operating under fixed use spectrum licences may continue to operate, provided that such equipment has been previously certified in accordance with RSS-192, issue 3. Furthermore, operation under fixed use spectrum licences is subject to the operational conditions defined in section 5 of this SRSP.

9. Licensees are required to make information on certain technical parameters of their radio systems available to ISED upon request.

10. The current issues of the following documents are applicable and are available on the Spectrum management and telecommunications website.

11. The following terms are used in this document.

Active antenna system (AAS)

An antenna system where the amplitude and/or phase between antenna elements is dynamically adjusted resulting in an antenna pattern that varies in response to short-term changes in the radio environment. AAS may be integrated in a point-to-multipoint (P-MP) hub station, base station and non-fixed subscriber equipment. Antenna systems used for long-term beam shaping such as fixed electrical down tilt are not considered an AAS.

AAS base station equipment

A base station with an AAS antenna system.

Non-active antenna system (Non-AAS)

An antenna system that does not meet the definition of AAS.

Non-AAS base station equipment

A base station with a non-AAS antenna system.

Adjacent frequency block group

In the context of this SRSP, adjacent frequency block group is defined as a continuous frequency range of multiple block(s) of 10 MHz that contains the equipment’s channel bandwidth. For equipment with channel bandwidth smaller than 10 MHz, the frequency block group is the frequency range of a 10 MHz block.

Antenna height above average terrain (HAAT)

The height of the centre of radiation of the antenna above the average elevation of the terrain between 3 and 16 km from the antenna, for an individual radial. The final antenna HAAT (also known as the effective height of the antenna above average terrain (EHAAT)) is the average of the antenna HAATs for 8 radials spaced every 45 degrees of azimuth starting with true north.

12. Fixed stations operating under fixed spectrum licences issued prior to June 2019 may continue to operate under SRSP-303.4, issue 3. Continued operation under SRSP-303.4, issue 3, also applies to Tier 5 area fixed spectrum licences issued after June 2019 as a result of the conversion of existing Tier 4 area fixed spectrum licences issued prior to June 2019 to Tier 5 areas. Modifications to existing fixed stations are allowed as long as the modifications comply with SRSP-303.4, issue 3. Any modified station not in compliance with SRSP-303.4, issue 3, will be considered a new fixed station. New fixed stations are permitted, provided that they comply with all requirements specified in SRSP-520 with the exception of paragraphs 16 and 17, where they shall comply with the band plan specified in SRSP-303.4, issue 3. Collectively, stations deployed under these fixed spectrum licences are hereafter referred to as “fixed spectrum licence deployments.”

13. Notwithstanding compliance with SRSP-303.4, issue 3, or SRSP-520, all fixed spectrum licence deployments are subject to the transition plan outlined in section 6.9 of SLPB-001-19, Decision on Revisions to the 3500 MHz Band to Accommodate Flexible Use and Preliminary Decisions on Changes to the 3800 MHz Band, the transition process general guidelines outlined in section 15 of SLPB-001-20, Policy and Licensing Framework for Spectrum in the 3500 MHz Band,and the 3500 MHz Transition Manual.

14. The guidelines for coordination to resolve possible interference conflicts between fixed spectrum licence deployments and stations operating under flexible use licences are outlined in the 3500 MHz Transition Manual.

15. The guidelines for coordination to resolve possible interference conflicts between fixed spectrum licence deployments are outlined in SRSP-303.4, issue 3.

16. The block structure for flexible use broadband systems in the 3500 MHz band is shown in figure 1.

Figure 1: 3500 MHz band plan

17. Frequency blocks available for licensing in the the 3450-3650 MHz band are intended for use with time division duplexing (TDD) systems. The band is divided in 20 unpaired blocks of 10 MHz. Frequency blocks can be aggregated to form a frequency block group. A frequency block group is a continuous frequency range of multiple block(s) of 10 MHz.

18. Non-TDD flexible use broadband systems operating in the 3450-3650 MHz band may be deployed. Such systems shall not interfere with, nor claim protection from, TDD flexible use broadband systems. Furthermore, flexible use broadband system licensees using non-TDD technology are required to provide sufficient guard bands or other mitigation measures such as the use of external filters, to reduce equivalent isotropically radiated power (e.i.r.p.) or total radiated power (TRP) to levels that are consistent with the unwanted emission limits set out in RSS-192.

19. Operations of new flexible use broadband systems according to the above band plan are subject to the timelines of the transition plan outlined in SLPB-001-19, the transition process general guidelines SLPB-001-20, and the 3500 MHz Transition Manual.

20. This section covers technical criteria in regards to power, antenna height and use of multiple-input-multiple-output (MIMO) antennas.

7.1 Fixed and base stations using non-active antenna systems

21. This section outlines the technical criteria for fixed and base stations using non-active antenna systems (non-AAS).

7.1.1 E.i.r.p. for non-AAS correlated transmission

22. When multiple non-AAS antennas are used at a station to transmit the same digital data in a given symbol period (even with different coding or phase shifts) for transmit diversity, or to steer signal energy towards a particular direction for enhanced directional gain (i.e. beamforming), or to devise any other transmission mode where signals from different antennas are correlated, the equivalent isotropically radiated power (e.i.r.p.) shall be calculated based on the aggregate power conducted across all antennas and resulting directional gain 10log₁₀(N)+G_maxdBi. Here, N is the number of antennas and G_max is the highest gain in dBi among all antennas.

7.1.2 E.i.r.p. for non-AAS uncorrelated transmission

23. When multiple non-AAS antennas are used at a station in which each antenna transmits different digital data during any given symbol period (i.e. space-time block codes) or independent parallel data stream over the same frequency bandwidth in order to increase data rates (i.e. spatial multiplexing), or from any other transmission mode where signals from different antennas are completely uncorrelated, the e.i.r.p. shall be calculated based on the aggregate power conducted across all antennas and maximum antenna gain G_max.

7.1.3 E.i.r.p. limits and antenna height limits

24. For fixed point-to-point (P-P) stations and flexible use base stations transmitting in accordance with section 6 of this SRSP within the frequency range 3450-3650 MHz with a channel bandwidth equal to or greater than 5 MHz, the maximum permissible e.i.r.p. is 68 dBm/5 MHz (i.e. no more than 68 dBm e.i.r.p. in any 5 MHz band segment) for stations with an antenna height above average terrain (HAAT) of up to 305 metres. For stations with a channel bandwidth less than 5 MHz, the maximum permissible e.i.r.p. is 61 dBm/MHz.

25. For all installations with an antenna HAAT of more than 305 metres, a corresponding reduction in e.i.r.p. according to the following formula shall be applied:

\[ e.i.r.p._{reduction} = 20log_{10} (HAAT / 305) dB \]

26. The HAAT of a fixed P-P station or flexible use base station with multiple antennas shall be calculated with reference to the highest antenna.

27. In mountainous areas where a licensee can demonstrate that the installation will not cause interference to other licensees in adjacent geographical service areas, this e.i.r.p. reduction is not required. In the context of this SRSP, a “mountainous area” is defined as a location, where the ground level of the site has a HAAT of 300 metres and there is a terrain feature within 50 km that rises to an elevation higher than the ground level of the site. However, if an interference case arises involving any stations with HAAT above 305 metres, then the station(s) with HAAT above 305 metres will be required to reduce e.i.r.p. according to the formula in paragraph 25, above.

7.2 Fixed and base stations using active antenna systems

28. This section outlines the technical criteria for fixed and base stations using active antenna systems (AAS).

7.2.1 Total radiated power for AAS transmission

29. Total radiated power (TRP) in watts is defined as the integral of the power transmitted by the AAS station in different directions over the entire radiation sphere.

\[ TRP \ {\underline{\underline{def}}} \ \frac{1}{4\pi} \ \int_{0}^{2\pi} \ \int_{0}^{\pi} \ P(\Theta,\varphi)sin(\Theta)d \Theta d\varphi \]

Where

P(θ,φ): power radiated in watts by an antenna array system in direction (θ,φ)

\[ P(\Theta,\varphi) = P_{Tx} g(\Theta,\varphi) \]

Where

P_TX: conducted power (watts) input to the array system
g(θ,φ): array systems directional gain (referencing an isotropic radiator) along (θ,φ) direction

7.2.2 Total radiated power limits and antenna height limits

30. For flexible use base stations transmitting in accordance with section 6 of this SRSP within the frequency range 3450-3650 MHz with a channel bandwidth equal to or greater than 5 MHz, the maximum permissible TRP is 47 dBm/5 MHz (i.e. no more than 47 dBm TRP in any 5 MHz band segment). For stations with a channel bandwidth less than 5 MHz, the maximum permissible TRP is 40 dBm/MHz.

31. Antenna height limits shall apply based on equivalent e.i.r.p. of the AAS antenna system. The equivalent e.i.r.p. in dBm/5 MHz shall be calculated as follows.

\[ (e.i.r.p.)_{eq} = TRP + G_{e} + 10 log_{10}(min(N_{Tx},8)) \]

where G_e is the gain of one antenna element in dBi, N_TX is the number of transmit antenna elements and TRP is measured in dBm/5 MHz. An equivalent e.i.r.p. of 68 dBm/5 MHz applies to an antenna installation with a HAAT of 305 metres or lower.

32. For any installation with a HAAT above 305 metres, TRP shall be reduced according to the following formula.

\[ TRP_{reduction} = 20log_{10} (HAAT / 305) dB \]

33. In mountainous areas where a licensee can demonstrate that the installation will not cause interference to other licensees in adjacent geographical service areas, this TRP reduction is not required. However, if an interference case arises involving any stations with HAAT above 305 metres, then the station(s) with HAAT above 305 metres will be required to reduce TRP according to the formula in paragraph 32, above.

7.3 Power limits for subscriber equipment

34. A wide array of subscriber equipment (e.g. mobile, nomadic, portable and fixed subscriber equipment) is expected to be supported by flexible use broadband systems. Maximum power limits for subscriber equipment are specified in RSS-192. The equipment should employ automatic transmit power control such that stations operate on the minimum required power.

7.4 Transmitter unwanted emissions

35. Transmitter unwanted emissions are specified in RSS-192.

36. This section deals only with coexistence between flexible use broadband systems. See section 5 of this SRSP for coordination guidelines for resolving possible interference conflicts between fixed spectrum licence deployments, or between fixed spectrum licence deployments and flexible use broadband systems.

37. When several flexible use licensees are authorized to operate systems using the same frequency block in adjacent licensing areas, coordination of any transmitter installations that are close to the licence area boundary shall be required to eliminate any harmful interference that might otherwise exist and ensure continuance of equal access to the frequency block by the affected licensees.

38. Fixed P-P stations or flexible use base stations must not generate a power flux density (pfd) outside the licensed service area that exceeds 114.5 dBW/m² in any 1 MHz, unless agreed otherwise by the affected licensee. The pfd of 114.5 dBW/m²/MHz corresponds to approximate field strength of 31.3 dBuV/m/MHz and receiver power of 116.9 dBm/MHz. An example of a calculation for pfd is given in annex B.

39. A pfd of –114.5 dBW/m²/MHz may be exceeded at or beyond a flexible use licensee’s service area boundary on a provisional basis where, within 70 km of its service area boundary, there is no station deployment by the neighbouring licensee (70 km zone). Licensees are encouraged to consult ISED’s Spectrum Management System for the latest deployment data for stations within 70 km of their service area boundary, and shall notify the licensees operating in the adjacent area for which the pfd of 114.5 dBW/m²/MHz is exceeded. However, in the event that new stations are deployed by the neighbouring licensee within the 70 km zone, both licensees will be required to meet the pfd at their respective service area boundary, unless otherwise agreed by both licensees.

40. Any fixed P-P station or flexible use base station will require further coordination with relevant flexible use licensees where any proposed modifications:

1. result in a pfd at or beyond the other service area boundary exceeding a pfd of 114.5 dBW/m²/MHz; or
2. involve operation on frequencies not previously coordinated; or
3. change the polarization.

41. Possible harmful interference conflicts resulting from the operation of two flexible use broadband systems in adjacent geographical service areas may occur. The resolution of those conflicts should be arrived at through mutual arrangements between the affected parties following consultation and coordination. When potential conflicts between systems cannot be resolved in a timely fashion, ISED shall be so advised, whereupon, following consultations with the parties concerned, ISED will determine the necessary course of action.

42. System expansion measures, such as addition of cells, cell splitting and sectorization, must not force major changes in the system of the flexible use licensee in the adjacent geographical service area, except by mutual agreement between the affected parties. Changes that would have potential impacts on the other licensee, including cell site locations, cell sectorization and cell splitting, require consultation with the other licensee.

43. All results of the analyses concerning the pfd and the agreements made between the licensees must be retained by the licensees and made available to ISED upon request.

44. This section deals only with coexistence between flexible use broadband systems. See section 5 of this SRSP for coordination guidelines for resolving possible interference conflicts between fixed spectrum licence deployments, or between fixed spectrum licence deployments and flexible use broadband systems.

45. For operation of fixed P-P stations or flexible use broadband base stations certified as Type 1 under RSS-192, flexible use broadband systems are required to coordinate with any other adjacent frequency block flexible use broadband systems operating in the same geographic area if their emissions exceed the following limits in a particular adjacent frequency block:

1. an e.i.r.p. limit of 34 dBm/5 MHz for non-AAS fixed P-P stations and flexible use base stations; or
2. a TRP limit of 43 dBm/5 MHz for AAS fixed P-P stations and flexible use base stations.

46. Coordination techniques include, but are not limited to, one or a combination of the following: the use of guard bands, the use of external filters, reducing e.i.r.p. or TRP, and synchronization of TDD operations. “Synchronized TDD operations” means operation of two or more different TDD systems where timeframes of all systems are synchronized in regards to start of the frame and uplink and downlink transmission durations.

47. Possible interference conflicts resulting from the operation of two flexible use broadband systems operating in adjacent block groups may occur even though the technical specifications of both this SRSP and RSS-192 are being met. The resolution of those conflicts should be arrived at through mutual arrangements between the affected parties following consultation and coordination.

48. When potential conflicts between systems cannot be resolved, ISED shall be so advised, whereupon, following consultations with the parties concerned, ISED will determine the necessary modifications and schedule of modifications.

49. Coordination with other radio service licensees may be required. In this context, coordination involves consultation between licensees to ensure coexistence with other systems including radiolocation, wireless broadband services (WBS) and fixed-satellite services (FSS) systems.

50. Where an interference conflict occurs, licensees are directed to resolve the conflicts through mutual arrangements between the affected parties following consultation and coordination.

51. When potential conflicts between systems cannot be resolved in a timely fashion, ISED shall be so advised, whereupon, following consultations with the parties concerned, ISED will determine the necessary course of action.

52. In addition, specific provisions also apply to certain radio systems as indicated below.

10.1 Radiolocation systems

53. As indicated in section 6 of SLPB-001-19, existing government users confirmed that removal of the radiolocation allocation in the 3450-3500 MHz band would not negatively impact the operation of government radiolocation users. However, there is still some maritime radar use in the United States in the 3400-3650 MHz band. As a result, fixed or mobile systems operating in the cities of Halifax, Dartmouth and Vancouver, and nearby coastal areas including those communities that are along the Straits of Georgia and Juan de Fuca, could be susceptible to an increased potential for interference in the 3450-3650 MHz band due to occasional radar use, particularly in the lower portion of the frequency band.

54. Further, there is the potential for intermittent interference resulting from aeronautical radar use below 3450 MHz in Canada and in the 3400-3650 MHz band in the United States.

10.2 Fixed-satellite service systems

55. A limited number of fixed-satellite service (FSS) earth stations^{Footnote 1} operate in the band 35003650 MHz. Fixed spectrum licensees or flexible use spectrum licensees planning to establish fixed or mobile systems within 80 km of FSS earth stations (80 km zone) in the band 3500-3650 MHz are required to coordinate with earth station licensees. The 80 km zone excludes any area that overlaps a large or medium population centre.^{Footnote 2} FSS earth stations currently operating in the band 3500-3650 MHz are listed in annex C. However, licensees are required to consult the list of licensed FSS earth station receivers in the 3500-3650 MHz band using ISED’s Spectrum Management System Data search tools for an up-to-date list of earth stations when planning to deploy a system within the 80 km zone. To facilitate coordination, fixed spectrum licensees or flexible use spectrum licensees shall notify the FSS operator 30 calendar days prior to deployment. If no objection is raised within the 30 days, fixed spectrum licensees or flexible use spectrum licensees may proceed with their deployment.

56. FSS operates in the band 37004200 MHz. Unwanted emissions generated by flexible use broadband systems compliant with this SRSP and RSS-192 may potentially interfere with the FSS in the 37004200 MHz band due to the receiver sensitivity characteristics of satellite earth stations. Licensees planning to establish fixed or mobile systems in the band 3450-3650 MHz are required to consult the list of licensed FSS earth station receivers in the 37004200 MHz band using ISED’s Spectrum Management System Data search tools and consult the FSS operator when planning to deploy a system within 25 km of a licensed earth station. Potential interference should be resolved through mutual arrangements between the affected parties.

10.3 Radio altimeters in the radionavigation service

57. Radio altimeters operate in the radionavigation service in the band 4200-4400 MHz. For coexistence between licensees in the band 3450-3650 MHz and radio altimeters in the band 4200-4400 MHz, all outdoor stations in all licence areas in Canada must observe the following requirements:

1. No station may communicate with remote piloted aircraft systems (e.g. drones).
2. Outdoor non-AAS and AAS fixed point-to-point and point-to-multipoint stations operating with a positive angle with reference to the horizon shall not exceed a maximum e.i.r.p. of 62 dBm per radio frequency (RF) channel. The e.i.r.p. of AAS fixed point-to-point and point-to-multipoint stations shall be calculated as follows:
   \[ (e.i.r.p.)_{max} = TRP + G_{e} + 10 log_{10} (N_{Tx}) \]
   where G_e is the gain of one antenna element in dBi, N_Tx is the maximum number of transmit antenna elements used to dynamically direct energy to form a beam and TRP is measured in dBm per RF channel.
3. Outdoor non-AAS and AAS base stations are required to operate their antenna systems at a negative elevation angle with reference to the horizon. Operators of AAS base stations are prohibited from vertical scanning (i.e. directing energy from antenna elements to form beams) at positive elevation angles with reference to the horizon.

58. No licensee may operate a station within an exclusion zone as defined in annex D.

59. Licensees of existing stations already in operation prior to the publication of SRSP-520, issue 2, and any licensee planning to operate a new station or modify an existing station within a protection zone as defined in section E.1 of annex E are required to conduct analyses to ensure compliance with all the technical and operational requirements as defined in section E.2. Reports of the analyses are to be included in a Pre-Operation Report as described in section E.3 and kept on file by the licensee. Licensees are required to submit an attestation to ISED as described in section E.3.4 at least 15 days prior to operation of any new station or to implementing any modification to an existing station. Licensees of existing stations are required to submit an attestation within 15 days of the publication of SRSP-520, issue 2.

60. The provisions described in this section do not apply to indoor stations.

61. Through their conditions of licence, flexible use licensees will be required to abide by certain technical requirements and to coordinate with U.S. licensees in accordance with the conditions of any international arrangements or agreements into which Canada enters for the 3450-3650 MHz band.

62. Specific coordination rules and procedures for the sharing of the band 3550-3650 MHz between Canadian and U.S. licensees are under negotiation between ISED and the Federal Communications Commission (FCC). ISED anticipates that the resulting coordination procedures will include a pfd of 114.5 dBW/m²/MHz for stations within 70 km of the Canada-U.S. border. Licensees in the band 3550-3650 MHz operating stations near the Canada-U.S. border are required to coordinate with U.S. licensees according to the upcoming arrangement. Pending the new rules, licensees shall coordinate with the U.S. licensees as stated in paragraphs 63-67 below. These requirements are subject to change from time to time in accordance with international agreements and arrangements.

63. Coordination of a new or modified station shall be required if:

1. the station is located at a distance less than 70 km from the Canada-U.S. border; and
2. the ground level pfd produced by the station in the other country’s territory exceeds 114.5 dBW/m²/MHz.

64. The coordination process is outlined in annex A.

65. If a licence is transferred, assigned or reissued, ISED requires any existing agreement forming the basis for coordination to continue to apply to the new licensee unless a new agreement is reached.

66. Canadian licensees are encouraged to enter into agreements with U.S. licensees (Agreements) to facilitate coordination, which should:

1. allow reasonable and timely development of the respective systems of the licensees;
2. allow for the provision of services by licensees within their service areas on either side of the border to the maximum extent possible;
3. utilize all available interference mitigation techniques, including antenna directivity, polarization, frequency offset, shielding, site selection and/or power control; and
4. continue to apply to any subordinate licensees or transferees.

67. Licensees must retain all data and calculations related to coordination of stations and/or Agreements and must provide ISED with such data and calculations, along with other supporting documentation, upon request.

When coordination with U.S. licensees is required, Canadian licensees must complete the process outlined below.

The licensee seeking coordination shall determine the maximum power flux density (pfd) at and beyond the border that could be produced by any single transmitting station. In making this determination (calculation), the licensee shall use sound engineering practices and generally accepted terrain-sensitive propagation models.

The licensee must communicate with any affected U.S. licensee and either enter into an Agreement as defined in this SRSP or provide the U.S. licensee with a Coordination Request.

A Coordination Request shall set out information and parameters including, but not limited to, the following:

• licensee information (corporate name/mailing address/telephone/email)
• licensed service areas
• point of contact
• location of transmitter (community/province/territory)
• geographic coordinates of transmitting antenna
• effective isotropically radiated power (e.i.r.p.) or total radiated power (TRP) (dBW)
• ground elevation and antenna height above ground (m)
• centre frequency (MHz)
• antenna polarization
• antenna pattern/tabulation of the pattern
• azimuth of the maximum antenna gain
• bandwidth and emission designation

The Coordination Request shall be sent by registered mail (or mutually acceptable method) and shall provide notification that the recipient may respond by registered mail (or mutually acceptable method) within 30 days of its receipt to state any objection to deployment of the proposed facilities. It should be noted that the date of postmark shall be taken as the date of response. If no objection is raised by the U.S. licensee within this time period, then the coordination process may be considered complete.

If a recipient of a Coordination Request raises an objection within 30 days of receipt of that request, licensees shall collaborate to develop a mutually acceptable solution to the potential interference problem (an Agreement).

In the event that the Canadian licensee and the U.S. licensee cannot reach an Agreement within 30 days of receipt of an objection, the Canadian licensee may request that ISED facilitate resolution of the case with the Federal Communications Commission (FCC) in the United States.

A station that requires coordination shall not be placed in operation until an Agreement has been reached between the relevant licensees or until ISED and the FCC have agreed on sharing terms.

The following example illustrates how the pfd at the service area boundary may be determined. Note that the calculation in the example assumes lineofsight conditions. Where lineofsight does not exist, an appropriate propagation model that takes the nonlineofsight situation into account should be used.

Example station parameters are provided in table B1.

An example deployment scenario is depicted in figure B1.

Figure B1: Example deployment scenario

The spectral power density in dB(W/MHz) at the boundary of service area Y (P_boundary) may be calculated using freespace propagation, taking into account such factors as atmospheric losses, as follows:

P_boundary

= P_T' + G_T – Path Loss
= P_T' + G_T  20 log F_MHz  20 log D_km  32.4
= (10 + 17  20 log (3515)  20 log (50)  32.4) dB(W/MHz)
= (10 + 17 – 70.92 – 33.98  32.4) dB(W/MHz)
= 110.3 dB(W/ MHz)

where: P_T'

= P_T  10 log B_MHz
= 20  10 log (10)
= 10 dB(W/MHz)

Then, the power flux density in dB(W/m²) in 1 MHz (pfd) may be calculated as follows:

pfd

= P_boundary  10 log A_r
= (110.3  10 log (579.9 x 10^-6)) dB(W/m²) in 1 MHz
= (110.3  (32.36)) dB(W/m²) in 1 MHz
= 77.94 dB(W/m²) in 1 MHz

where: A_r

= λ² / (4π)
= c² / {(4π) x (F_Hz )²}
= (3 x 10⁸)² / {(4π) x (3515 x 10⁶ )² }
= 579.9 x 10^-6 m²

Note that the above calculation is presented in this form to illustrate the ease by which an alternative Path Loss calculation method can be substituted for the free-space formulation used here. This example is provided for information only and the use of other generally accepted calculation methods is permitted.

The licence and location information of the FSS earth stations operating in the frequency band 3500-3650 MHz is provided in table C1.