Local Multipoint Communication Systems (LMCS) in the 28 GHz Range: Policy, Authorization Procedure, and Evaluation Criteria
Applicants should submit Phase I Expressions of Interest no later than to the office of:
Radiocommunications and Broadcasting Regulatory Branch
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:
Radiocommunications and Broadcasting Regulatory Branch
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.
Radiocommunication and Broadcasting
Telecommunications Policy Branch
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.
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.
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.
- Frequency tolerance for LMCS equipment should be 0.001% or better.
- Minimum spectral efficiency should be 1 bit/sec/Hz.
- 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.
- 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.
- 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.
- 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.
|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|
|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|
- Date modified: