SRSP-505 — Technical Requirements for Multipoint Communications Systems Operating in the Bands 928-929/952-953 MHz and 932-932.5/941-941.5 MHz

    Issue 2, Effective date: July 22, 1995

    Spectrum Management
    Standard Radio System Plan

    Table of Contents

    1. Intent
    2. General
    3. Related Documents
    4. Sharing Arrangements along the Canada/United States Border
    5. Band Plan
    6. Technical Considerations
    7. Electromagnetic Compatibility (EMC)

    1. Intent

    1.1 This Standard Radio System Plan (SRSP) states the minimum technical requirements to operate multipoint communications systems (MCS) in the bands 928-929/952-953 MHz and 932-932.5/941-941.5 MHz.

    1.2 As these bands are shared with the U.S. in the border area, coordination between Canada and U.S. is required in certain portions of the bands to prevent harmful interferenceFootnote 1 and to ensure equal access by both countries. The sharing arrangements between Canada and the U.S. for the usage of these bands are also described in this Standard.

    1.3 This Standard is intended to be used for the evaluation of licence applications for new radio facilities or modification to radio systems submitted in accordance with the current issue of Radio Standards Procedure RSP 101.

    1.4 This Standard specifies equipment characteristics relating to efficient spectrum usage only and is not to be regarded as a comprehensive specification for equipment design and/or selection.

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    2. General

    2.1 Revision of this Standard will be made as required.

    2.2 Although a radio system conforms with the requirements of this SRSP, the Department may require modifications to the system whenever harmful interference is caused to other radio sites or systems, except when such interference is due to inadequate receiver selectivity as dealt with in Section 2.3.

    2.3 The Department reserves the right to limit protection to licensed radio receivers only to the extent of bandwidth of the transmitters whose emissions they are licensed to receive. For example, full protection is not granted to operators using a receiver which is designed for use on a 25 kHz channel but operating on a 12.5 kHz channel. Licensees and/or applicants should use receiver selectivity characteristics or filters that provide rejection of harmful interference.

    2.4 Radio systems conforming to these technical requirements will be given priority in licensing over non standard radio systems, that is to say those systems which do not conform to the most recent issue of the spectrum utilization policy (SP), radio systems policy (RP) or the SRSP, or which are authorized while an SRSP is under preparation. The provisions for such non-standard systems are outlined in SP-GEN (see 3.1.6).

    2.5 The following definitions are applicable for the purposes of this document:

    2.5.1 Master Station — a station which controls, activates or interrogates multiple (three or more) remote sites and/or receives from multiple remote sites.Footnote 2

    2.5.2 Remote Station — a station which is either controlled, activated, or interrogated by, and may respond to, a master station or transmit one-way to a master station.

    2.5.3 Multipoint Communications System (MCS) — a system consisting of a central radio station communicating on a one or two-way basis with associated remote sites.

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    3. Related Documents

    3.1 The current issues of the following documents are applicable:

    3.1.1 Radio Standards Procedure RSP 100:
    Certification of Radio Equipment.

    3.1.2 Radio Standards Procedure RSP 101:
    Application Procedure for Planned Radio Stations Operating on Frequencies Below 960 MHz.

    3.1.3 Radio Standards Specification RSS 119:
    Land and Mobile Stations, 27.41 to 960 MHz, 20-30 kHz Channelling.

    3.1.4 Radio Standards Specification (RSS) 122:
    Land and Mobile FM or PM Radiotelephones Operating in the 400-960 MHz Bands Using 12.5 kHz Spacing.

    3.1.5 Spectrum Utilization Policy SP 896 MHz:
    Spectrum Utilization Policy for the Fixed, Mobile, Radiolocation and Amateur Services in the Band 896-960 MHz.

    3.1.6 Spectrum Utilization Policy (SP) SP-GEN:
    General Information Related to Spectrum Utilization and Radio System Policies.

    3.1.7 Telecommunication Regulation Circular TRC 43:
    Notes Regarding Designation of Emission (Including Necessary Bandwidth and Classification), Class of Station and Nature of Service.

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    4. Sharing Arrangements along the Canada/United States Border

    4.1 The administrations of Canada and the United States have concluded arrangements for the sharing of spectrum along the border in the bands 928-929/952-953 MHz and 932-932.5/941-941.5 MHz. The sharing arrangements are summarized in Table 1. The coordination zone is illustrated in Figure 1.

    The terms of the arrangements for these bands are outlined below:

    4.2 928.000-928.250 MHz, 928.750-929.000 MHz and 952.000-952.250 MHz, 952.750-952.850 MHz

    4.2.1 Within the coordination zone, frequencies within these bands are available in Canada on a coordinated, shared basis. New master stations must provide

    1. a minimum of 145 km separation, or alternatively,
    2. limit the actual power flux density (pfd) of the proposed station to -100 dBW/m2

    at existing co-channel master stations of the other country, or as mutually agreed upon on a case-by-case basis.

    Coordination is not required if the pfd at the border is lower than -100 dBW/m2. New master stations will be notified by Industry Canada to the U.S. administration if protection is required.

    4.2.2 928.250-928.500 MHz and 952.250-952.500 MHz
    The United States has full use of frequencies within these bands. Canada may also use these frequencies on an unprotected basis, provided the stations are limited to a pfd of -100 dBW/m2 at or beyond the United States border.

    4.2.3 928.500-928.750 MHz and 952.500-952.750 MHz
    Canada has full use of frequencies within these bands. The United States may also use these frequencies on an unprotected basis, provided its stations are limited to a pfd of -100 dBW/m2 at or beyond the Canadian border.

    4.2.4 952.850-953.000 MHz
    Use of frequencies within this band is governed by the provisions of established coordination procedures, rather than this arrangement. Within the coordination zone, frequencies in this band are available in Canada on a coordinated, shared basis. The coordination zone illustrated in Figure 1 is applicable.

    4.2.5 Grandfathering Provision
    In addition to the above mentioned provisions, all frequency assignments in the bands 928-929 and 952-953 MHz must protect existing stations in both countries.

    4.3 932-932.5 MHz and 941-941.5 MHz

    4.3.1 932.0 - 932.25 MHz and 941.0 - 941.25 MHz
    Canada has full use of frequencies within these bands. The United States may also use these frequencies on an unprotected basis, provided its stations are limited to a power flux-density (pfd) of -100 dBW/m2 at or beyond the United States-Canada border for the frequency band 932-932.25 MHz and -94 dBW/m2 at or beyond the United States-Canada border for the band 941-941.25 MHz.

    4.3.2 932.25 - 932.50 MHz and 941.25-941.50 MHz
    The United States has full use of frequencies within these bands. Canada may also use these frequencies on an unprotected basis, provided its stations are limited to a pfd of -100 dBW/m2 at or beyond the United States-Canada border for the frequency band 932.25-932.50 MHz and -94 dBW/m2 at or beyond the United States-Canada border for the band 941.25-941.50 MHz.

    Table 1 — Summary of Canada/United States Sharing Arrangements
    Frequency Bands (MHz) 928.00-928.25, 952.00-952.25,
    928.75-929.00,
    952.75-952.85
    928.25-928.50,
    952.25-952.50
    932.25-932.50,

    941.25 - 941.50
    928.50 - 928.75,
    952.50-952.75
    932.00-932.25,

    941.00-941.25
    952.85-953.00

    * Such use shall be governed by the provisions of Arrangement A of the Agreement concerning the coordination and use of radio frequencies above thirty megacycles per seconds, as amended

    Canada
    Beyond approximately120 km of the border Full, uncoordinated use
    Within approximately120 km of the border Full use on a coordinated, first come basis; 145 km separation or -100 dBW/m2 from existing stations;

    no coordination needed if less than -100 dBW/m2 at border.

    Unprotected usage, provided stations are limited to -100dBW/m2, except for the band 941.25-941.50 MHz where stations are limited to -94 dBW/m2, at or beyond the United States-Canada border. Full, uncoordinated use, but must protect existing, grandfathered stations for United States for the bands 928.50-928.75 MHz and 952.50-952.75 MHz. In accordance with established coordination procedures*.
    United States
    Within approximately120 km of the border Full use on a coordinated, first come basis; 145 km separation or -100 dBW/m2 from existing stations;

    no coordination needed if less than -100 dBW/m2 at border.

    Full, uncoordinated use, but must protect existing, grandfathered stations for Canada for the bands 928.25 928.50 MHz and 952.25 - 952.50 MHz. Unprotected usage, provided stations are limited to -100 dBW/m2, except for the band 941-941.25 MHz where stations are limited to -94 dBW/m2 , at or beyond the United States-Canada border. In accordance with established coordination procedures*.
    Beyond approximately120 km of the border Full, uncoordinated use

     

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    5. Band Plan

    5.1 Two modes of operation are normally permitted for multipoint communications systems: one way (from master station to remote sites or from remote sites to master station); and two way (from master station to remote sites and from remote sites to master station).

    5.2 Frequencies for multipoint communications systems in the bands 928-929 MHz and 932-932.5 MHz are paired respectively, except as specified below, with those in the bands 952-953 MHz and 941-941.5 MHz. The lower frequency bands are designated as "remote transmit" and the higher frequency bands "master transmit".

    5.3 The RF channels listed for the bands 928-929 MHz and 952-953 MHz that have been designated for MCS duplex operation can be found in Tables 2 and 4. Similarly, the RF channels that have been designated for simplex operation can be found in Tables 3 and 5. The RF channels listed for the bands 932-932.5 MHz and 941-941.5 MHz, designated for MCS duplex operation, can be found in Table 6.

    5.4 For the bands 928-929 MHz and 952-953 MHz, the channelling plan is based on both 12.5 kHz and 25 kHz RF channel spacings with the 12.5 kHz RF channels spaced ±18.75 kHz from the 25 kHz RF channels when both RF channels operate in the same geographical area. RF channels with 12.5 kHz or 25 kHz channel spacing may be available upon request. For the bands 932-932.5 and 941-941.5 MHz, the RF channel spacing is 12.5 kHz.

    5.5 In the MCS bands 928-929 and 952-953 MHz, RF channels will be assigned commencing at the lowest available frequency for 25 kHz RF channels and at the highest available frequency for 12.5 kHz RF channels on a first-come first-served basis.

    5.6 Requirements for greater than 25 kHz RF channel bandwidths, in the bands 928-929 MHz and 952-953 MHz, may be allowed on a case-by-case basis (see RSP 101) at the discretion of the Regional Executive Director. Upon adequate justification, additional channels may be combined to accommodate systems requiring higher data rates. Channel bandwidths exceeding 50 kHz are not permitted unless the applicant can demonstrate that greater spectrum efficiency is achieved by using the larger bandwidth.

    Similarly, requirements for greater than 12.5 kHz RF channel bandwidths, in the bands 932-932.5 MHz and 941-941.5 MHz, may be allowed on a case-by-case basis (see RSP 101) at the discretion of the Regional Executive Director. Upon adequate justification, additional channels may be combined to accommodate systems requiring higher data rates. Channel bandwidths exceeding 25 kHz are not permitted.

    5.7 Communications between master stations may be authorized on a case-by-case basis and on a secondary, non-interference basis, on the same MCS frequencies used in point-to-multipoint operations. However, the use of MCS frequencies which uniquely satisfy a point-to-point requirement, will not be allowed.

    5.8 Frequencies for mobile master stations may be permitted for assignment only with adequate justification and without expanding the service area. The assignment of these frequencies are based on the condition that there is no interference from MCS mobile master stations to MCS fixed operations.

    5.9 Mobile remote stations would only be permitted ancillary to fixed remote stations. Such mobile remote stations would only be permitted to communicate with fixed MCS master stations and cannot expect the same degree of protection as fixed stations due to their varying operating environment.

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    6. Technical Considerations

    6.1 Power Limitations
    On any authorized frequency, the average power delivered to an antenna shall bethel amount of power necessary to carry out the communications desired within the limits specified below.

    6.1.1 The transmitter output power for remote transmitter(s) shall not exceed 5 watts (7 dBW).

    6.1.2 The transmitter output power for fixed master transmitter(s) shall not exceed 100 watts (20 dBW) when an omnidirectional antenna is used and 20 watts (13 dBW) when a directional antenna is used.

    6.2 Effective Radiated Power (ERP) for Fixed Master Stations
    The Effective Radiated Power (ERP) for fixed master station(s) operating in the bands 941-941.5 MHz and 952-953 MHz shall not exceed 250 watts (24 dBW) when an omni directional antenna is used. When a directional antenna is used, as per Canada/U.S. Arrangements the Effective Radiated Power (ERP) for fixed master station(s) in the border area shall not exceed 600 watts (27.8 dBW), and 2500 watts (34 dBW) beyond.

    6.3 Power Reduction Table

    The following power reduction table should be used:

    Power Reduction Table
    Antenna Height (metres) up to 90 120 150 180 210 240 270 >270
    Power Reduction (dB) 0 2 3 5 7 9 10 11

    6.4 Effective Radiated Power (ERP) for Mobile Master Stations
    The maximum ERP for mobile master stations is 25 watts (14 dBW). With this ERP, the minimum distance between MCS mobile master stations and a co-channel fixed MCS service area would be 70 km. If the minimum separation is less, the mobile's authorized ERP will be in accordance with the following:

    Effective Radiated Power (ERP) for Mobile Master Stations
    Distance (km) up to: 20 30 40 50 60 70
    Maximum ERP (dBW) 0 3.5 6 8 10 14

    6.5 Co-Channel Reuse Distance: Fixed Master Stations
    The minimum co-channel reuse distance between two fixed MCS master stations normally shall be 135 km.

    6.6 Remote Site Antenna Limitations
    A directional antenna should be employed at each remote site. Exceptions may be made upon adequate justification. A minimum front-to-back ratio (F/B) of 15 dB will be assumed when a directional antenna is used. This (F/B) will be the basis of the geographical distance between two master stations and carrier-to-interference (C/I) calculations. These limitations are not applicable for MCS mobile remote antennas.

    6.7 Equipment Certification
    Equipment operating on 25 kHz channels must meet RSS-119.

    Transmitters operating on 12.5 kHz channels must meet RSS-122, while receivers operating on 12.5 kHz channels may optionally meet RSS-122 or RSS-119.

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    7. Electromagnetic Compatibility (EMC)

    7.1 In cases where the co-channel reuse distance criterion in 6.5 is not met, the Department will perform an EMC analysis to determine if the proposed assignment could co-exist with other existing or previously applied for MCS systems.

    Issued under the authority of Industry Canada

    G. R. Begley
    Director General
    Spectrum Engineering



    Table 2 — (25 kHz Channel Spacings) 928-929 and 952-953 MHz Duplex RF Channels (MHz)
      Remote Transmit Master Transmit
    1. 928.0125 952.0125
    2. .0375 .0375
    3. .0625 .0625
    4. .0875 .0875
    5. .1125 .1125
    6. .1375 .1375
    7. .1625 .1625
    8. .1875 .1875
    9. .2125 .2125
    10. .2375 .2375
    11. .2625 .2625
    12. .2875 .2875
    13. .3125 .3125
    14. .3375 .3375
    15. .3625 .3625
    16. .3875 .3875
    17. .4125 .4125
    18. .4375 .4375
    19. .4625 .4625
    20. .4875 .4875
    21. .5125 .5125
    22. .5375 .5375
    23. .5625 .5625
    24. .5875 .5875
    25. .6125 .6125
    26. .6375 .6375
    27. .6625 .6625
    28. .6875 .6875
    29. .7125 .7125
    30. .7375 .7375
    31. .7625 .7625
    32. .7875 .7875
    33. .8125 .8125
    34. 928.8375 952.8375

    Table 3 — (25 kHz Channel Spacings) 928-929 and 952-953 MHz Simplex RF Channels (MHz)
      Remote Transmit   Master Transmit

    Note: The channels listed may be available for mobile master transmit. The power limitations in Section 6.4 apply to the mobile master stations.

    1. 928.8625 7. 952.8625
    2. .8875 8. .8875
    3. .9125 9. .9125
    4. .9375 10 .9375
    5. .9625 11 .9625
    6. 928.9875 12 952.9875

    Table 4 — (12.5 kHz Channel Spacings) 928-929 and 952-953 MHz Duplex RF Channels (MHz)
      Remote Transmit Master Transmit   Remote Transmit Master Transmit
    1. 928.00625 952.00625 35. 928.43125 952.43125
    2. .01875 .01875 36. .44375 .44375
    3. .03125 .03125 37. .45625 .45625
    4. .04375 .04375 38. .46875 .46875
    5. .05625 .05625 39. .48125 .48125
    6. .06875 .06875 40. .49375 .49375
    7. .08125 .08125 41. .50625 .50625
    8. .09375 .09375 42. .51875 .51875
    9. .10625 .10625 43. .53125 .53125
    10. .11875 .11875 44. .54375 .54375
    11. .13125 .13125 45. .55625 .55625
    12. .14375 .14375 46. .56875 .56875
    13. .15625 .15625 47. .58125 .58125
    14. .16875 .16875 48. .59375 .59375
    15. .18125 .18125 49. .60625 .60625
    16. .19375 .19375 50. .61875 .61875
    17 .20625 .20625 51. .63125 .63125
    18. .21875 .21875 52. .64375 .64375
    19. .23125 .23125 53. .65625 .65625
    20. .24375 .24375 54. .66875 .66875
    21. .25625 .25625 55. .68125 .68125
    22 .26875 .26875 56. .69375 .69375
    23. .28125 .28125 57. .70625 .70625
    24. .29375 .29375 58. .71875 .71875
    25. .30625 .30625 59. .73125 .73125
    26. .31875 .31875 60. .74375 .74375
    27. .33125 .33125 61. .75625 .75625
    28. .34375 .34375 62. .76875 .76875
    29. .35625 .35625 63. .78125 .78125
    30 .36875 .36875 64. .79375 .79375
    31. .38125 .38125 65. .80625 .80625
    32 .39375 .39375 66. .81875 .81875
    33. .40625 .40625 67. .83125 .83125
    34. 928.41875 952.41875 68. 928.84375 952.84375

    Table 5 — (12.5 kHz Channel Spacings) 928-929 and 952-953 MHz Simplex RF Channels (MHz)
      Remote transmit   Master transmit

    Note: The channels listed may be available for mobile master transmit. The power limitations in Section 6.4 apply to the mobile master stations.

    1. 928.85625 13. 952.85625
    2. .86875 14. .86875
    3. .88125 15. .88125
    4. .89375 16. .89375
    5. .90625 17. .90625
    6. .91875 18. .91875
    7. .93125 19. .93125
    8. .94375 20. .94375
    9. .95625 21. .95625
    10. .96875 22. .96875
    11. .98125 23. .98125
    12. 928.99375 24. 952.99375

    Table 6 — (12.5 kHz Channel Spacings) 932-932.5 and 941-941.5 MHz Duplex RF Channels (MHz)
      Remote transmit Master transmit
    1. 932.00625 941.00625
    2 .01875 .01875
    3. .03125 .03125
    4. .04375 .04375
    5. .05625 .05625
    6. .06875 .06875
    7. .08125 .08125
    8. .09375 .09375
    9. .10625 .10625
    10. .11875 .11875
    11. .13125 .13125
    12. .14375 .14375
    13. .15625 .15625
    14. .16875 .16875
    15. .18125 .18125
    16. .19375 .19375
    17. .20625 .20625
    18. .21875 .21875
    19. .23125 .23125
    20. .24375 .24375
    21. .25625 .25625
    22. .26875 .26875
    23. .28125 .28125
    24. .29375 .29375
    25. .30625 .30625
    26. .31875 .31875
    27. .33125 .33125
    28. .34375 .34375
    29. .35625 .35625
    30. .36875 .36875
    31. .38125 .38125
    32. .39375 .39375
    33. .40625 .40625
    34. .41875 .41875
    35. .43125 .43125
    36. .44375 .44375
    37. .45625 .45625
    38. .46875 .46875
    39. .48125 .48125
    40. 932.49375 941.49375



    Figure 1 — Canada/United States Sharing Arrangement: Bands 928-929/952-953 MHz and 932-932.5/941-941.5 MHz - Coordination Zone
    Figure 1 - Canada/United States Sharing Arrangement: Bands 928-929/952-953 MHz and 932-932.5/941-941.5 MHz - Coordination Zone

    [Description of Figure]

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    Footnotes

    1. 1 For the purpose of this SRSP, harmful interference means interference which endangers the functioning of a radio navigation service or of other safety services or seriously degrades, obstructs, or repeatedly interrupts a radio communication service operating in accordance with regulations and technical requirements laid down by Industry Canada under the Radiocommunication Act.
    2. 2 Note that in SP-GEN, a system with two or more remote sites is considered as an MCS system.

    Description of Images

    Figure 1 — Canada/United States Sharing Arrangement: Bands 928-929/952-953 MHz and 932-932.5/941-941.5 MHz - Coordination Zone

    This figure shows a partial map of Canada and the United States, illustrating the Coordination Zone according to the Canada/United States Sharing Arrangement for use of the bands 928-929/952-953 MHz and 932-932.5/941-941.5 MHz. The Coordination Zone is the area adjacent to the Canada-United States border, extending a distance of approximately 120 km within either country.

    Back to Figure 1