update on industry canadas white space database specification (dbs-01) joint industry canada/rabc...

Update on Industry Canada’s White Space Database

Specification (DBS-01)

Joint Industry Canada/RABC Stakeholder Discussion - Ottawa, ONMay 14th 2013

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DBS-01 White Space Database Specification

Sets the minimum technical requirements for the designation of a database capable of indicating available channels for use by white space devices (WSDs)

Intent

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White Space Database (WSDB)

Provides lists of available channels to WSDs

Ensures protection of all licensed services and systems operating in the WS frequency bands

Uses geo-location to manage the operation of WSDs


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White Space Frequency Bands

Note 1: Exclusion of Ch. 3-4 due to the use by consumer electronic devices in North America.Note 2: Exclusion of Ch. 37 due to protection of radio astronomy and wireless medical telemetry.


Frequency Bands(MHz)

TV Channels Personal/PortableWSD

FixedWSD

54-60 2 -

60-72 3-4 [Note 1]

76-88 5-6 -

174-216 7-13 -

470-512 14-20 -

512-608 21-36

608-614 37 [Note 2]

614-698 38-51

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Licensed Services and Systems to be Protected

Over-the-Air (OTA) TV Broadcasting;

Remote Rural Broadband Systems (RRBS) base stations;

Licensed Low Power Apparatus (LPA);

Radio astronomy, and

Medical telemetry

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Over-the-Air TV Broadcasting

WSDBs shall protect on-air stations only of the following:– Regular Power (DTV, Analog TV)

– TV Translators, TV Boosters

– Low Power/Very Low Power (DTV, Analog TV)– TV translators, TV Boosters– Receive-only stations making use of TV broadcast

signals such as cable TV head-ends and low-power TV receive sites


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Current Status of OTA TV in Canada

Regular Power TV Stations: 341– Digital: 188 (mostly in urban markets)

– Analog: 153 (mostly in suburban markets)

LP TV Stations: 640 (mostly in suburban markets)

– Digital: 24 – Analog: 616


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Broadcast TV Protected Contours

Note: Refer to BPR-10 for DTV and BPR-4 for Analogue TV


Type of TV station TV Channel Thresholds for Broadcast TV

Protected Contour(dBµV/m)

Propagation Curve

Analog (full and low power)

Low VHF (Ch. 2-6) 47 F(50,50)

High VHF (Ch. 7-13) 56 F(50,50)

UHF (Ch. 14-51) 64-20log(615/F) F(50,50)

Digital (full power)

Low VHF (Ch. 2-6) 28 F(50,90)

High VHF (Ch. 7-13) 36 F(50,90)

UHF (Ch. 14-51) 41-20log(615/F) [Note 5] F(50,90)

Digital (low power)

Low VHF (Ch. 2-6) 43 F(50,90)

High VHF (Ch. 7-13) 48 F(50,90)

UHF (Ch. 14-51) 51-20log(615/F) [Note 5] F(50,90)

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TV Protection Contour Example


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Interference Protection Criteria for TV Receiver Separation Distances

Protection of TV broadcasting from harmful interference by WSDs requires a physical separation.

The minimum separation distance is calculated using TV Broadcast Protected Contour values, TV Protection Ratios, the ERP WSD, EHAAT of the WSD, and the F-Curves.

Methodology on the Derivation of the Required Separation Distance to the TV Broadcast Protected Contours is shown in Appendix B.


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Sample of the Minimum Separation Distances from Fixed WSD to Broadcast TV Contours


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Sample of the Minimum Separation Distances from Mode II P/P to Broadcast TV Contours


* WSDs with power levels of 40 mW (16 dBm) or less may operate within the protected contours of adjacent channel RRBS stations.

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Fixed WSDs – Protect RRBS for co-channel, 1st adjacent and 2nd

adjacent channels based upon the associated RRBS protection criteria.

Personal/portable mode II WSDs – Protect RRBS stations for co-channel and 1st

adjacent channels.

WSDs with power levels of 40 mW (16 dBm) or less may operate within the protected contours of adjacent channel RRBS stations.

Remote Rural Broadband Systems (RRBS)Protection


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Remote Rural Broadband Systems (RRBS) Protection Criteria


Channel RRBS Station Protection Criteria

(dBµV/m)

Co-Channel 37.8

1st Adjacent 69.0

2nd Adjacent 91.6

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Minimum Separation Distance of Fixed WSD to RRBS Station


EHAAT of Fixed WSD

Required Separation from RRBS Base Station Contour(km)

Co-channelusing F(50,10)

1st AdjacentChannel using

F(50,50)

2nd AdjacentChannel

Less than 3 meters 2 2

0.3

3-Less than 10 meters 2 2



50-Less than 75 meters 9 1.6




200-250 meters 19 2.1

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Minimum Separation Distance of P/P Mode II WSD to RRBS Station


EHAAT of Mode II WSD

Required Separation from RRBS Base Station Contour(km)

Co-channel using F(50,10)1st Adjacent

Channel

Less than 3 meters 2

0.7

3-Less than 10 meters 2







200-250 meters 9

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White Space Implementation Plan

All licensed LPAs will only have protection from WSDs

Licensed LPAs with fixed locations will be protected for pre-determined periods in the WSDB.

Licensed LPAs not having a fixed location will need to register more precise scheduling information:– Exact location and time(s) of operation with a WSDB

Low-Power Apparatus (LPA) Scheduling Limits/Rules

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Registration facility required to collect location and time-of-use scheduling information for LPA.Location may be a point, radius or polygon.Multiple registrations that specify more than one point in the facility may be entered for very large sites. Ensure that updated licensed LPA scheduling information be exchanged amongst all of the WSDBs.Verify that the LPA is licenced.

LPA Registration


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Separation Distance from WSDs to LPA


White Space Device Type

Required Separation (km)from protected LPA

Co-channel

Personal/portable400 m

400 m

Fixed 1 km

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Channel 37:Radio AstronomyProposing a 2.4 km separation distance away from the centre based on the coordinates – Dominion Radio Astrophysical Observatory (Penticton, B.C.)– Algonquin Provincial Park (ON)

Medical Telemetry

Other Services to Protect


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Verify that the WSD is Industry Canada certified.Provide lists of available channels to certified WSDs. Use encryption to prevent corruption/modification of data between WSDB and WSDs.Ensure data is protected from unauthorized access, input, manipulation, or the deliberate extraction of operational and/or client data.


Security

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Provide fixed and mode II WSDs with channel availability information and included schedule changes for the upcoming 48 hours, upon initial and re-verification of WSD contact.

Provide available channel information to mode II personal/portable WSDs for locations beyond their current position.

– Define a geographic area within which they could operate on the same available channels at all locations.


Database Access Initialization and Re-verification Procedures

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Ensure the synchronization of data of the most current Industry Canada licensing information with other WSDBs every day.Ensure that the scheduling information of licensed LPA is synchronized with the other WSDBs every 15 minutes.


Synchronization

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U.S. broadcasting stations, protected receive sites and LPA are to be protected to the same criteria as specified for Canadian stations above, with the exception that protected contours and/or operational areas will be assumed to stop at the Canada/U.S. border.


Protection of U.S. Stations

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WSDB must retain WSD technical parameters for [X] days for audit purposes in the case of interference reports. This information shall be provided to Industry Canada on formal request of the Department. WSDBs shall delete WSD locations after such time that no interference is reported.


Interference Response

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Any Questions ?

DBS-01 White Space Database Specifications

[email protected]

update on industry canadas white space database specification (dbs-01) joint industry canada/rabc...

Documents

lowpower tv

analog tv tv translators

analogue tv dbs

white space database

broadcast tv contours

tv protection ratios

white space frequency

rrbs station dbs