Local Multipoint Communication Systems (LMCS) in the 28 GHz Range: Policy, Authorization Procedure, and Evaluation Criteria

7. Filing Address

Applicants should submit Phase I Expressions of Interest no later than to the office of:

Director General
Radiocommunications and Broadcasting Regulatory Branch
Industry Canada
Journal Tower North
300 Salter Street
Ottawa, Ontario K1A 0C8

Phase II Detailed Submissions must be submitted on or before to the same address given above.

8. Further Information

General inquiries, strictly on clarification of the policy or on procedural requirements and procedures contained in this document, must be submitted no later than in writing to the office of:

Director General
Radiocommunications and Broadcasting Regulatory Branch
Industry Canada
Journal Tower North
300 Salter Street
Ottawa, Ontario KEA 0C8

or by fax to 613-952-9871, phone 613-998-3768.

All questions received and responses will be made public as quickly as possible thereafter. There will be no individual responses and the parties requesting clarification will remain anonymous. All questioners and any other know interested parties will be sent the questions and the responses.

Jan Skora8
Director General
Radiocommunication and Broadcasting
Regulatory Branch
Michael Helm
Director General
Telecommunications Policy Branch

Appendix A Technical and Operational Requirements for LMCS

ITU Requirements (25.25-27.5 GHz)

In the ITU Radio Regulations the band 25.25-27.5 GHz is allocated on a coprimary basis to Fixed (FS), Mobile and Inter-Satellite (IS) services. The current ITU regulations applicable to this band for the fixed service are as follows:

2504A (WARC 92) As far as practicable, sites for transmitting stations, in the fixed or mobile service, employing maximum values of equivalent isotropic radiated power (e.i.r.p) density exceeding 24 dBW in any 1 MHz band in the band 25.25-27.5 GHz should be selected so that the direction of maximum radiation of any antenna will be at least 1.5° away from the geostationary-satellite orbit, taking into account the effect of atmospheric refraction1.

2504A.1 (WARC 92)
1 The provisions, of No. 2504A shall apply until such time as the CCIR has made a recommendation on the e.i.r.p. density limits which should apply in the band.

2505 § 3.
(1) The maximum equivalent isotropically radiated power (e.i.r.p) of a station in the fixed or mobile service shall not exceed +55 dBW.

2508
(4) The power delivered by a transmitter to the antenna of a station in the fixed or mobile service in frequency bands above 10 GHz shall not exceed +10 dBW.

The above regulations were based on the use of these bands by point-to-point systems in the fixed service. Since the band can also be used for high density point-to-multipoint systems, the following measures are needed to comply with the intent of these regulations.

Application of RR 2504A

It should be noted that this Radio Regulation (RR) is under review with a view to ensure protection to Intersatellite Data Relay Satellite (DRS) systems, operating on the geostationary orbit (GSO), and to consider the need to increase the e.i.r.p. of point-to-point FS systems beyond 24 dBW/MHz under rain conditions. There is no specific consideration given at this time to develop separate regulations for LMCS type applications. Based on studies to date Footnote 4, DRS systems are protected as long as the co-channel e.i.r.p density of 24 dBW/MHz toward specific satellite locations on the GSO is not exceeded. These locations for existing DRS systems are: 174 degrees W, 171 degrees W, 170 degrees W, 160 degrees W ,139 degrees W, 79 degrees W, 62 degrees W, 46 degrees W, 44 degrees W, 41 degrees W, 16 degrees W, 16.4 degrees E, 59 degrees E, 85 degrees E, 90 degrees E, 95 degrees E, 121 degrees E, 153.8 degrees E.

In the case of LMCS, the e.i.r.p density limit of 24 dBW/MHz should be considered as an aggregate of all co-channel transmitters (both hub and subscribers) in a total area visible to a DRS satellite location.

Application of RR 2508

This RR restricts the transmitter power delivered to the antenna of a station in the fixed service to +10 dBW due to the assumption of the use of a high gain antenna in a point-to-point environment. Cases where a single hub transmitter power exceeds 10 watts over a large bandwidth may be permitted, subject to approval by the Department. LMCS operators are encouraged to contact the Department as early as possible if they are planning to use such equipment.

Subscriber transmitter and e.i.r.p power limits

The limits given above also apply to the subscriber transmitters including the need to assess the impact of aggregate interference at the DRS satellite locations. The information available to date for the transmissions from subscriber stations is very limited. Many different scenarios are considered for the transmissions from subscribers depending on the nature of the application. Therefore it will be up to the operator to ensure that their implementations meet the above criteria.

Power flux density (pfd) limits for the inter-satellite service

ITU RR 2578 specifies the pfd limits for the band 25.25-27.5 GHz for emissions from spacecraft in the inter-satellite service. These limits are as follows:

2578 The power flux-density at the Earth’s surface produced by emissions from a space station, including emissions from a reflecting satellite, for all conditions and for all methods of modulation, shall not exceed the following values:

  • 115 dB(W/m2) in any 1 MHz band for angles of arrival between 0 and 5 degrees above the horizontal plane;
  • 115 + 0.5 (-5) dB(W/m2) in any 1 MHz band for angles of arrival (in degrees) between 5 and 25 degrees above the horizontal plane;
  • 105 dB(W/m2) in any 1 MHz band for angles of arrival between 25 and 90 degrees above the horizontal plane.

These limits relate to the power flux-density which would be obtained under assumed free-space propagation conditions. The LMCS operators should consider the above pfd values from inter-satellite systems in their system design.

Coordination Considerations

The following requirements should facilitate inter-system coordination of LMCS systems, and should allow compatibility with inter-satellite applications in the band 25.5 – 27.5 GHz. These requirements are based on current information available on LMCS technology.

  1. Frequency tolerance for LMCS equipment should be 0.001% or better.
  2. Minimum spectral efficiency should be 1 bit/sec/Hz.
  3. Only orthogonally polarized signals (i.e. horizontal or vertical) should be employed in order to benefit from cross-polar isolation and to maximize frequency reuse.
  4. In addition to accounting for aggregate levels, the maximum e.i.r.p density for a single station shall not exceed -52 dBW/Hz, except in cases of hub-to-hub interconnection which will be considered on a case by case basis.
  5. Inter-system coordination within the same area and with the adjacent areas is the responsibility of the LMCS operators. Industry Canada should be advised of any difficulties.
  6. Coordination of LMCS systems in the border area will be required with the terrestrial systems in the U.S. There is no existing coordination agreement with the U.S. at this time for this frequency band. Until such time as an agreement is developed, Industry Canada will coordinate any systems located within 60 km of the border. This distance is currently used for the coordination of fixed systems in the 23 GHz. band. LMCS operators are encouraged to provide information to Industry Canada for any coordination carried out with U.S. operators.

The above technical requirements in this appendix are subject to change in accordance with future changes to the ITU recommendations and radio regulations, as well as any additional information from LMCS operators and equipment manufacturers.

Appendix B Table 1 Service Areas and Fees

Appendix B Table 1 Service Areas and Fees
Service Area Number of Households Block A Block B
Fee ($) Fee ($)
Barrie 24 010   12 005   12 005
Belleville 24 265   12 132   12 132
Brandon 14 695   7 347   7 347
Brantford 33 775   16 887   16 887
Brockville 11 410   5 705   5 705
Calgary 266 370   133 185   133 185
Charlottetown 13 530   6 765   6 765
Chatham 17 815   8 907   8 907
Chicoutimi\Jonquière\ Alma 61 130   30 565   30 565
Cobourg\Port Hope 11 750   5 875   5 875
Cornwall 18 500   9 250   9 250
Courtenay 24 175   12 087   12 087
Drummondville 21 585   10 792   10 792
Edmonton 286 385   143 192   143 192
Fort McMurray 11 295   5 647   5 647
Fredericton 25 215   12 607   12 607
Granby 21 145   10 572   10 572
Grande Prairie 10 105   5 052   5 052
Guelph/Kitchener 156 275   78 137   78 137
Halifax 106 050   53 025   53 025
Joliette 13 370   6 685   6 685
Kamloops 25 170   12 585   12 585
Kelowna 54 050   27 025   27 025
Kingston 41 445   20 722   20 722
Lethbridge 25 180   12 590   12 590
London\Woodstock\ St Thomas 150 140   75 070   75 070
Medicine Hat 17 000   8 500   8 500
Moncton 30 165   15 082   15 082
Montréal 1 268 660   634 330   634 330
Moose Jaw 13 385   6 692   6 692
Nanaimo 41 600   20 800   20 800
Niagara\Ste.Catharines\ Welland 106 610   53 305   53 305
North Bay 19 470   9 735   9 735
Orillia 11 390   5 695   5 695
Ottawa\Hull 338 295   169 147   169 147
Pembroke 12 070   6 035   6 035
Penticton 12 445   6 222   6 222
Peterborough 28 510   14 255   14 255
Prince Albert 13 670   6 835   6 835
Prince George 23 750   11 875   11 875
Quebec 234 330   117 165   117 165
Red Deer 21 460   10 730   10 730
Regina 67 820   33 910   33 910
Rimouski 14 515   7 257   7 257
Rouyn-Noranda 10 960   5 480   5 480
Saint John 35 835   17 917   17 917
Sarnia 28 195   14 097   14 097
Saskatoon 71 855   35 927   35 927
Sault Ste Marie 30 650   15 325   15 325
Sherbrooke 57 535   28 767   28 767
Sydney 33 055   16 527   16 527
Sorel 16 430   8215   8215
St-Hyacinthe 16 055   8 027   8 027
St. John's 49 965   24 982   24 982
Stratford 11 130   5 565   5 565
Sudbury 46 270   23 135   23 135
Thunder Bay 43 210   21 605   21 605
Timmins 13 680   6 840   6 840
Toronto\Hamilton\Oshawa 1 614 405   807 202   807 202
Trois-Rivieres 69 550   34 775   34 775
Val-D'Or 10 345   5 172   5 172
Vancouver 662 460   331 230   331 230
Victoria 122 730   61 365   61 365
Victoriaville 13 370   6 685   6 685
Windsor\Leamington 104 520   52 260   52 260
Winnipeg 243 975   121 987   121 987
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