SRSP-500 — Technical Requirements for Land Mobile and Fixed Radio Services Operating in the Bands 138-144 MHz and 148-174 MHz

Provisional - Issue 1
March 2004

Spectrum Management and Telecommunications Policy
Standard Radio System Plans

Table of Contents

1. Intent

1.1 This Standard Radio System Plan (SRSP) states the minimum technical requirements for efficient spectrum utilization for land mobile and fixed point-to-point systems operating in the bands 138-144 and 148-174 MHz.

1.2 Existing mobile systems that operate in Areas of Intensive Mobile UseFootnote 1 are considered to be non-standard if they do not conform to the efficiency requirement set out for Phase 1 and Phase 2 of the Redeployment Plan and the related criteria of those Phases described in this SRSP.

1.3 Radio systems conforming to the requirements contained in this SRSP will take priority in licensing and coordination over non-standard systems proposed for operation in these bands, subject to the terms and conditions of Spectrum Utilization Policy (SP Gen) and Redeployment Plan 100-500 MHz. Systems which do not meet the duplex/simplex criteria established in this plan will not be declared non-standard.

1.4 Modification of a non-standard system will not be required except where this system blocks the entry of standard systems into the frequency bands covered by the Redeployment Plan. Any system identified for modification under the provisions of the Redeployment Plan will be required to conform to this SRSP, as stated above, and where spectrum availability permits.

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2. General

2.1 Equipment used for land mobile or fixed systems operating in the above bands must normally comply with the appropriate technical standards listed in Section 3.1.

2.2 Notwithstanding the fact that a system satisfies the requirements of this Standard, the Department shall require adjustment to radio and auxiliary equipment in radio stations whenever harmful interferenceFootnote 2 is caused to any radio station operating in accordance with Departmental regulations or standard.

2.3 The Redeployment Plan will take place in two phases, requiring a transition to more spectrum-efficient land mobile equipment, which frees-up mobile spectrum in areas of Intensive Mobile Use where additional mobile users cannot be accommodated. In Phase I, equipment must be capable of using less than 15 kHz bandwidth per voice channel in a 15 kHz channel spacing, and in Phase II, equipment must be capable of using less than 7.5 kHz bandwidth per voice channel in a 7.5 kHz channel spacing.

2.4 Although they are included in this SRSP and in the Redeployment Plan, the bands 156.025 - 157.425 MHz and 161.6 - 162.025 MHz designated for Maritime Mobile Service and the band 160.170 - 161.580 MHz assigned to the railways are not subject to the terms and conditions of this SRSP. The Maritime Mobile Service has priority in its designated bands and the railways have exclusive use in the assigned band, as per the Railway Association of Canada's (RAC) spectrum licence. However, outside of the Maritime Mobile Service and the RAC's geographical areas of operation, channels are available for assignment to land mobile services as specified in this SRSP and the provisions of the Redeployment Plan.

2.5 The Department will provide protection to licensed radio receivers only to the extent of the bandwidth of the transmitters whose emissions they are receiving up to the limits of the channel assigned. Applicants should bear this in mind when selecting receivers and receiver filters.

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3. Related Documents

Equipment and systems to be used in the bands covered by this document shall be in accordance with the currently adopted versions of the following Radio Standards Specifications, Procedures and Policy documents which can be found on the Spectrum Management and Telecommunications Web site at http://www.ic.gc.ca/spectrum , in Official Publications.

Canadian Table of Frequency Allocations

Channel Loading Guidelines (GL-004)

Radiocommunication Information Circular 6 (RIC-6), Spectrum Consumption and the Rescinded 2007Saturation Index Rescinded 2007

Radiocommunication Information Circular 13 (RIC-13), Technical Requirements for the Operation of Mobile Stations in the Maritime Service

Radio Standards Procedure 100 (RSP-100), Radio Equipment Certification Procedure

Radio Standards Procedure 101 (RSP-101), Application Procedure for Planned Radio Stations Operating on Frequencies below 960 MHz

Radio Standards Specification 119 (RSS-119), Land Mobile and Fixed Radio Transmitters and Receivers, 27.41 to 960 MHz

Radio System Policy RP-Gen (RP-Gen), General Spectrum Policy Principles and Other Information Related to Spectrum Utilization and Radio System Policies

Radio System Policy 003 (RP-003), Policy Guidelines for Mobile Radio Trunked Systems

Radio System Policy 004 (RP-004), Policy for the Licensing of Very Low Capacity Point to Point Links in the Band 30-890 MHz

Radio System Policy 013 (RP-013), Spectrum Utilization Policy on the Use of Certain Public Correspondence Bands in Canada

Redeployment Plan 100-500 MHz (RDP 100-500 MHz), Redeployment Plan for Spectrum Efficient Land Mobile Equipment in the Frequency Range 100-500 MHz

Spectrum Utilization Policy SP-Gen (SP-Gen), General Information Related to Spectrum Utilization and Radio Systems Policies

Spectrum Utilization Policy SP 30-896 MHz, Part I (SP 30-896 MHz, Part I), Spectrum Allocation and Utilization in Certain Bands in the Range 30.01 - 896 MHz (Part I)

Spectrum Utilization Policy SP 30-896 MHz, Part II (SP 30-896 MHz, Part II), Spectrum Utilization Policy for the Mobile, Broadcasting and Amateur Services in the Frequency Range 30-896 MHz (Part II)

Terrestrial Radiocommunication Agreements and Arrangements (TRAA), Treaty Series 1962 No. 15 - Coordination and Use of Radio Frequencies, Exchange of Notes Between Canada and the United States of America

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4. General Guidelines

4.1 Frequency assignments shall be in accordance with Figure 1, Annex A, and the tables of Annex B.

4.2 For Land Mobile Service, channels shall be spaced 30 kHz, 15 kHz, or 7.5 kHz apart, centred on the frequencies as illustrated and listed in Figure 1 Annex A, and will be assigned according to the required bandwidth of the system. Note that the 30 kHz-spaced 'A' channels, with channels interstitially-spaced, represent the channel arrangement before Phase 1.Footnote 3 The 15 kHz-spaced 'B' channels will be used during Phase 1 of the redeployment activities and the 7.5 kHz-spaced 'C' channels will be used during Phase 2Footnote 4 of redeployment.

Systems that employ a different channelization from what is described above may be considered and authorized on a case-by-case basis if they result in equivalent spectrum efficiency and comply with the technical requirements for the bands covered by this SRSP.

4.3 The centre frequencies of the 'A', 'B', and 'C' channels contained in Annex B can be calculated as follows for channel numbers (n) as shown:

For 138 -144 MHz:
An = 138 + 0.015 + 0.030 * (n-1) MHz
for 1 ≤ n ≤ 200
 
Bn = 138 + 0.015 + 0.015 * (n-1) MHz
for 1 ≤ n ≤ 399
 
Cn = 138 + 0.0075 + 0.0075 * (n-1) MHz
for 1 ≤ n ≤ 799

For 148 - 149.9 MHz:
An = 148 + 0.015 + 0.030 * (n-201) MHz
for 201 ≤ n ≤ 263
 
Bn = 148 + 0.015 + 0.015 * (n-400) MHz
for 400 ≤ n ≤ 525
 
Cn = 148 + 0.0075 + 0.0075 * (n-800) MHz
for 800 ≤ n ≤ 1051

For 150.05 - 154.605 MHz:
An = 150.05 + 0.015 + 0.030 * (n-264) MHz
for 264 ≤ n ≤ 415
 
Bn = 150.05 + 0.015 + 0.015 * (n-526) MHz
for 526 ≤ n ≤ 828
 
Cn = 150.05 + 0.0075 + 0.0075 * (n-1053) MHz
for 1053 ≤ n ≤ 1659

For 154.605 - 174 MHz:
An = 154.605 + 0.015 + 0.030 * (n-416) MHz
for 416 ≤ n ≤ 1061
 
Bn = 154.605 + 0.015 + 0.015 * (n-829) MHz
for 829 ≤ n ≤ 2120
 
Cn = 154.605 + 0.0075 + 0.0075 * (n-1660) MHz
for 1660 ≤ n ≤ 4244

The following frequency channels in series B and C should be considered last for assignment, in order to preserve backward compatibility with the 30 kHz channelling plans:

Backward compatibility with the 30 kHz channelling plans
Band Edge (MHz) Series B Series C
139.0200 B68 C136
141.0900 B206 C412
141.9900 B266 C532
143.0100 B334 C668
148.9900 B465 C931
151.0500 N/A C1052
151.8800 B647 C1296
154.5800 B827 C1656
157.4500 B1018 C2039
166.0050 B1588 C3179
167.0250 B1656 C3315
170.9850 B1920 C3843

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5. Spectrum Availability and Suballocation Plans

5.1 Sharing Arrangements Along the Canada/United States Border

5.1.1 In order to meet the requirements of the radio services in both Canada and the United States, the Administrations have established arrangements for the exchange of frequency assignment information and engineering comments of proposed assignments along the Canada/United States borders. The coordination areas are illustrated in Figure 6. The coordination and use of the frequency band 138 - 144 MHz is governed by Arrangement D, while the coordination and use of the frequency band 148 - 174 MHz is governed by Arrangements A and D. Outside the border areas, there are no restrictions on either country except when a possibility exists that assignments outside the border areas may result in harmful interference to the radio services of the other country. In this case a special coordination process will be initiated.

5.1.2 The suballocation plans in the various frequency bands, as shown in Figures 2 to 5 Annex A, consist of blocks of channels designated for simplex and duplex operation, and act as a guide for the selection and assignment of frequencies. In those areas of the country which are adjacent to the United States and within the Canada/U.S. coordination zone, frequency assignment according to the suballocation plans may not be feasible or practical due to current domestic or U.S. assignments where existing transmitters and receivers offset is established. In those cases that offset should be kept.

5.2 Suballocation Channelling Plan for the Bands 138.0000 - 144.0000 MHz and 148.0000 - 151.8800 MHz

5.2.1 Figure 2 illustrates the suballocation plan for the assignment of frequencies in this band.

5.2.2 For Duplex Pair 'D', the base transmit frequency is in the upper block 141.9900-143.0100 MHz and the mobile transmit frequency is in the lower block 138.0000-139.0200 MHz. The TX/RX split is 3.99 MHz. The base transmit frequency (Btx) is selected as the first available frequency, starting at 141.9975 MHz for 'C' channels and 142.0500 MHz for 'A' and 'B' channels, and the mobile transmit frequency (Mtx) can be determined as follows:

Mtx = (Btx - 3.99) MHz

5.2.3 For Simplex Block 'D' 139.0200-141.0900 MHz, the first available frequency is 139.0275 MHz for 'C' channels and 139.0350 MHz for 'A' and 'B' channels.

5.2.4 For Duplex Pair 'E', the base transmit frequency is in the lower block 141.0900-141.9900 MHz and the mobile transmit frequency is in the upper block 148.9900-149.8900 MHz. The TX/RX split is 7.9 MHz. The base transmit frequency (Btx) is selected as the first available frequency, starting at 141.0975 MHz for 'C' channels and 141.1050 MHz for 'A' and 'B' channels, and the mobile transmit frequency (Mtx) can be determined as follows:

Mtx = (Btx + 7.9) MHz

5.2.5 For Simplex Block 'E' 150.0500-151.8800 MHz, the first available frequency is 150.0575 MHz for 'C' channels and 150.0650 MHz for 'A' and 'B' channels.

5.2.6 For Duplex Pair 'F', the base transmit frequency is in the lower block 143.0100-144.0000 MHz and the mobile transmit frequency is in the upper block 148.0000-148.9900 MHz. The TX/RX split is 4.99 MHz. The base transmit frequency (Btx) is selected as the first available frequency, starting at 143.0175 MHz for 'C' channels and 143.0250 MHz for 'A' and 'B' channels, and the mobile transmit frequency (Mtx) can be determined as follows:

Mtx = (Btx + 4.99) MHz

5.3 Suballocation Channelling Plan for the Band 151.8800 - 160.1700 MHz

5.3.1 Figure 3 illustrates the suballocation plan for the assignment of frequencies in this band.

5.3.2 For Duplex Pair 'G', the base transmit frequency is in the lower block 151.8800-154.5800 MHz and the mobile transmit frequency is in the upper block 157.4550-160.1550 MHz. The TX/RX split is 5.575 MHz. The base transmit frequency (Btx) is selected as the first available frequency, starting at 151.8875 MHz for 'C' channels, 151.8950 MHz for 'A' and 'B' channels, and the mobile transmit frequency (Mtx) can be determined as follows:

Mtx = (Btx + 5.575) MHz

5.3.3 For Simplex Block 'F' 154.5800-156.0000 MHz, the first available frequency is 154.5875 MHz for 'C' channels and 154.5950 MHz for 'A' and 'B' channels.

5.3.4 Near navigable waterways, frequencies in the band 156.0000-157.4500 MHz are assigned on a preferred basis to stations of the maritime mobile service. However, land mobile assignments may be made in this band according to the conditions contained in the Canadian Table of Frequency Allocations and in accordance with the provisions of this SRSP.

5.3.5 For Simplex Block 'G' 156.0000-157.4500 MHz, the first available frequency is 156.0075 MHz for 'C' channels and 156.0150 MHz for 'A' and 'B' channels.

5.4 Suballocation Channelling Plan for the Band 160.1700 - 162.0500 MHz

5.4.1 Figure 4 illustrates the suballocation plan for the assignment of frequencies in these bands.

5.4.2 Frequencies in the band 160.1700 - 161.5800 MHz, are assigned by means of a spectrum licence to the Railway Association of Canada, on an exclusive basis within the geographical area, consisting of a corridor bounded 70 km on each side of railway lines. However, beyond this geographical area, railway frequencies may be available for assignment to land mobile services according to this SRSP provided that the railway service is protected within the railways' geographical area of operation.

5.4.3 Near navigable waterways, frequencies in the band 161.5800 - 162.0500 MHz are assigned on a preferred basis to stations of the maritime mobile service. However, land mobile assignments may be made in this band according to the conditions contained in the Canadian Table of Frequency Allocations and in accordance with the provisions of this SRSP.

5.4.4 For Simplex Block 'H' 160.1700-162.0500 MHz, the first available frequency is 160.1775 MHz for 'C' channels and 160.1850 MHz for 'A' and 'B' channels.

5.5 Suballocation Channelling Plan for the Band 162.0500 - 174.0000 MHzFootnote 5

5.5.1 Figure 5 illustrates the suballocation plan for the assignment of frequencies in this band.

5.5.2 For Duplex Pair 'H', the base transmit frequency is in the lower block 162.0500-166.0050 MHz and the mobile transmit frequency is in the upper block 167.0250-170.9850 MHz . The TX/RX split is 4.98 MHz. The base transmit frequency (Btx) is selected as the first available frequency, starting at 162.0600 for 'A', 'B' and 'C' channels, and the mobile transmit frequency (Mtx) can be determined as follows:

Mtx = (Btx + 4.98) MHz

5.5.3 For Simplex Block 'I' 166.0500-167.0250 MHz, the first available frequency is 166.0125 MHz for 'C' channels and 166.0200 MHz for 'A' and 'B' channels.

5.5.4 For Simplex Block 'J' 170.9850-174.0000 MHz, the first available frequency is 170.9925 MHz for 'C' channels and 171.0000 MHz for 'A' and 'B' channels.

5.6 Regions will endeavour to select channels with the same duplex pairing. Notwithstanding the channel splits described in the sections above, different channel TX/RX spacings can be authorized upon regional consideration provided that the TX/RX assignments fall within TX/RX designations.

5.7 Blocks designated for simplex operation may be assigned for duplex operation where conditions warrant. Blocks designated for duplex operation may be assigned for simplex operation where conditions warrant.

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6. Technical Considerations

6.1 Channel Sharing

6.1.1 Section 40 of the Radiocommunication Regulations states: "The assignment of a frequency or frequencies to a holder of a radio authorization does not confer a monopoly on the use of the frequency or frequencies, nor shall a radio authorization be construed as conferring any right of continuing tenure in respect of such frequency or frequencies".

6.2 Loading Guidelines

6.2.1 Normally, the Department will apply the guidelines found in Channel Loading Guidelines GL-004 in determining loading of communications channels, and thus, of radio channels.

6.2.2 In the frequency assignment process, these guidelines may be utilized in conjunction with current observed channel occupancy data (obtained with automatic occupancy measuring equipment) to determine whether additional channels are required. Such observations will also be used to assess the general loading criteria and the inherent trade-off between sound spectrum management and acceptable grades of service.

6.2.3 The Department is using this approach to make frequency assignments but may also take into account other considerations when determining the number of radio channels to be assigned to a system. Applicants are encouraged to provide as much traffic related data as possible with their application.

6.3 Radiated Power Limits

6.3.1 Mobile Systems

Normally, the maximum power for base stations shall be 125 watts Effective Radiated Power (ERP) and 30 watts ERP for mobile stations. However, in all cases, the ERP shall be limited to that which is necessary to providing a balanced radio system (mobile talk-back capability) over the desired service area or the required level of service as governed by system requirements.

6.3.2 Fixed Point-to-Point Systems

Unless otherwise justified, fixed point-to-point systems must use directional antennas with a minimum gain of 9 dB with respect to a half wave dipole. Horizontally polarized antennas must be used in all cases unless operational requirements justify vertical polarization.

The maximum Effective Radiated Power (ERP) shall be limited to that which is required to achieve system reliability requirements and shall not exceed 125 watts.

6.4 Co-channel Separation

6.4.1 Normally, in urban areas and areas of intensive mobile use, the geographic separation between co-channel base stations will be calculated based on a non-overlap of the 34 dBμV/m protected contour of the existing station and the 17 dBμV/m interference contour of the proposed station.

6.4.2 For Public Safety systems, a C/I of 20 dB will be used to calculate the interference contour of the new station. The protected contour of the existing public safety base station will remain 34 dBμV/m but the interference contour of the new station will be 14 dBμV/m.

6.4.3 The protected contour of the existing station is calculated based on a probability of service of 50% of the time for 50% of the locations at the edge of the contour.

6.4.4 The interference contour is calculated using the probability that the interfering signal level used is not exceeded more than 10% of the time (i.e. 90% of the time it is below the threshold) for 50% of the locations.

6.4.5 It is recognized that coverage requirements are a function of operational characteristics and the technology deployed. The Department may accept the use of different methodology to evaluate separation between co-channel base stations, on a case-by-case basis.

6.4.6 Applicants are invited to include adequate technical details in support of their proposed wireless networks to allow a compatibility analysis with existing and future assignments. These analyses should be prepared using terrain based models.

6.4.7 These details should include, but not be limited to, the required service area, the predicted radio coverage, and the design parameters used including the minimum carrier to interference (C/I) ratio.

Issued under the authority of the Minister of Industry

Robert W. McCaughern
Director General
Spectrum Engineering Branch

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Footnotes

Return to footnote reference 1 Areas of Intensive Mobile Use are defined in the Redeployment Plan (RDP 100 -500).

Return to footnote reference 2 Harmful interference 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.

Return to footnote reference 3 See RDP 100-500 MHz, released October 1998, Section 3.2.1.

Return to footnote reference 4 See RDP 100-500 MHz, released October 1998, Section 3.2.2.

Return to footnote reference 5 The Department is in discussion with Meteorological Services of Canada to allocate the frequencies 162.400, 162.475, and 162.550 MHz with a channel width of 25 kHz to be used by, or on behalf of Meteorological Services of Canada for the transmission of weather information and various alerts intended for reception by the public.

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