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Update on Industry Canadas White Space Database Specification (DBS-01) Joint Industry Canada/RABC Stakeholder Discussion - Ottawa, ON May 14 th 2013.

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Presentation on theme: "Update on Industry Canadas White Space Database Specification (DBS-01) Joint Industry Canada/RABC Stakeholder Discussion - Ottawa, ON May 14 th 2013."— Presentation transcript:

1 Update on Industry Canadas White Space Database Specification (DBS-01) Joint Industry Canada/RABC Stakeholder Discussion - Ottawa, ON May 14 th 2013

2 2 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

3 3 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 DBS-01 White Space Database Specification

4 4 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. DBS-01 White Space Database Specification Frequency Bands (MHz) TV ChannelsPersonal/Portable WSD Fixed WSD [Note 1] [Note 2]

5 5 DBS-01 White Space Database Specification 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

6 6 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 DBS-01 White Space Database Specification

7 7 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 DBS-01 White Space Database Specification

8 8 Broadcast TV Protected Contours Note: Refer to BPR-10 for DTV and BPR-4 for Analogue TV DBS-01 White Space Database Specification Type of TV stationTV ChannelThresholds for Broadcast TV Protected Contour (dBµV/m) Propagation Curve Analog (full and low power) Low VHF (Ch. 2-6)47F(50,50) High VHF (Ch. 7-13)56F(50,50) UHF (Ch )64-20log(615/F)F(50,50) Digital (full power) Low VHF (Ch. 2-6)28F(50,90) High VHF (Ch. 7-13)36F(50,90) UHF (Ch )41-20log(615/F) [Note 5] F(50,90) Digital (low power) Low VHF (Ch. 2-6)43F(50,90) High VHF (Ch. 7-13)48F(50,90) UHF (Ch )51-20log(615/F) [Note 5] F(50,90)

9 9 TV Protection Contour Example DBS-01 White Space Database Specification

10 10 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. DBS-01 White Space Database Specification

11 11 Sample of the Minimum Separation Distances from Fixed WSD to Broadcast TV Contours DBS-01 White Space Database Specification

12 12 Sample of the Minimum Separation Distances from Mode II P/P to Broadcast TV Contours DBS-01 White Space Database Specification * WSDs with power levels of 40 mW (16 dBm) or less may operate within the protected contours of adjacent channel RRBS stations.

13 13 Fixed WSDs –Protect RRBS for co-channel, 1st adjacent and 2 nd adjacent channels based upon the associated RRBS protection criteria. Personal/portable mode II WSDs –Protect RRBS stations for co-channel and 1 st 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 DBS-01 White Space Database Specification

14 14 Remote Rural Broadband Systems (RRBS) Protection Criteria DBS-01 White Space Database Specification ChannelRRBS Station Protection Criteria (dBµV/m) Co-Channel st Adjacent nd Adjacent91.6

15 15 Minimum Separation Distance of Fixed WSD to RRBS Station DBS-01 White Space Database Specification EHAAT of Fixed WSD Required Separation from RRBS Base Station Contour (km) Co-channel using F(50,10) 1 st Adjacent Channel using F(50,50) 2 nd Adjacent Channel Less than 3 meters Less than 10 meters22 10-Less than 30 meters22 30-Less than 50 meters42 50-Less than 75 meters Less than 100 meters Less than 150 meters Less than 200 meters meters192.1

16 16 Minimum Separation Distance of P/P Mode II WSD to RRBS Station DBS-01 White Space Database Specification EHAAT of Mode II WSD Required Separation from RRBS Base Station Contour (km) Co-channel using F(50,10) 1 st Adjacent Channel Less than 3 meters Less than 10 meters2 10-Less than 30 meters2 30-Less than 50 meters2 50-Less than 75 meters2 75-Less than 100 meters2 100-Less than 150 meters5 150-Less than 200 meters meters9

17 17 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

18 18 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 DBS-01 White Space Database Specification

19 19 Separation Distance from WSDs to LPA DBS-01 White Space Database Specification White Space Device Type Required Separation (km) from protected LPA Co-channel Personal/portable 400 m Fixed1 km

20 20 Channel 37: Radio Astronomy Proposing 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 DBS-01 White Space Database Specification

21 21 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. DBS-01 White Space Database Specification Security

22 22 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. DBS-01 White Space Database Specification Database Access Initialization and Re-verification Procedures

23 23 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. DBS-01 White Space Database Specification Synchronization

24 24 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. DBS-01 White Space Database Specification Protection of U.S. Stations

25 25 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. DBS-01 White Space Database Specification Interference Response

26 26 Any Questions ? DBS-01 White Space Database Specifications

27 27


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