Peter Ecclesine’s Presentation at eComm 2009
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The document discusses TV channel allocations and regulations for fixed and portable white space devices. It describes requirements for white space devices to check a geolocation database for available channels, register their location and identification information, and transmit identifying signals. The database contains fixed device information like FCC ID, location, and contact details to coordinate spectrum sharing.
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Peter Ecclesine’s Presentation at eComm 2009
- 2. The Possibilities of White Space “Identifying Information” Peter Ecclesine, Cisco [email_address]
- 3. US TV channel allocations http://www.fcc.gov/mb/engineering/usallochrt.pdf Channel Frequency (wavelength) 2,3,4 54-72 MHz (wavelength ~six meters) 5,6 76-88 MHz (wavelength ~3.66 meters) 7-13 174-216 MHz (wavelength ~1.5 meters) 14-20 470-512 MHz (wavelength ~60 cm) 21-51 512-692 MHz (wavelength ~50 cm) Note that channel 37 is reserved for radio astronomy and medical telemetry (608-614 MHz), and channels 36 and 38 are reserved for biomedical devices in thirteen urban markets Note that some of channels 14-20 are shared with PLMRS/CMRS in thirteen urban markets
- 4. source: Shared Spectrum Co. from IEEE 802.18-04/0004 73.699 Grade B 50% and 90% contours A Grade B contour is the geographic area in which it is predicted that a consumer with an outdoor rooftop receiving antenna can pick up a signal of Grade B intensity from the local network broadcast station F(90,50) = 90% of time, 50% of locations 41db μv /m for ATSC UHF 64db μ V/m for NTSC UHF Channel 5 in the Eastern US latitude longitude
- 5. Fixed and personal/portable TVWD Fixed devices allowed 1W tx power/4W EIRP TV channels 2, 5-36, 38-51 nationwide up to 240 MHz Must sense signals to -114 dBm Fixed devices must consult TV bands database daily* Personal/portable devices allowed 100 mW EIRP TV channels 21-36, 38-51 nationwide up to 180 MHz Must sense signals to -114 dBm Master mode (Mode II) devices must consult TV bands database daily*, Client devices (Mode I) operate under the control of Master mode devices
- 6. TV Bands Database Geo- location & database access Must be supported in both Fixed and Portable Mode II devices Accuracy of 50 meters Could be from GPS receiver or entered during “Professional Installation” National databases of TV bands Identify available TV channels at the TVBD’s location Register ID and location of fixed TVBDs Identify other protected locations and channels Fixed device’s ID information includes: FCC ID, serial number, location , contacts, etc. FCC will certify the official databases and designate one or more administrators Fixed devices must consult database on initialization and daily* Operation must cease immediately if channel no longer available Fixed devices without a direct Internet connection may communicate with another connected fixed device on a channel that has been marked available Mode II devices must additionally consult after being re-located and daily*
- 7. TVWD entry in database 15.713(f) Fixed TVBD registration. (1) Prior to operating for the first time or after changing location, a fixed TVBD must register with the TV bands database by providing the information listed in paragraph (f)(3) of this section. (2) The party responsible for a fixed TVBD must ensure that the TVBD registration database has the most current, up-to-date information for that device. (3) The TVBD registration database shall contain the following information for fixed TVBDs: (i) FCC identifier (FCC ID) of the device. (ii) Manufacturer’s serial number of the device. (iii) Device’s geographic coordinates (latitude and longitude (NAD 83) accurate to +/- 50 m). (iv) Name of the individual or business that is responsible for the device. (v) Name of a contact person responsible for the device’s operation. (vi) Address for the contact person. (vii) E-mail address for the contact person. (viii) Phone number for the contact person. 15.713(g) A personal/portable device operating in Mode II shall provide the database its FCC Identifier (as required by § 2.926 of this chapter), serial number as assigned by the manufacturer, and the device’s geographic coordinates (latitude and longitude (NAD 83) accurate to +/- 50 m)
- 8. Fixed Devices transmit identifying information. Geolocation is the key to the database, and to enforcement. Imagine cars without license plates… 15.711(e) Fixed TVBDs shall transmit identifying information. The identification signal must conform to a standard established by a recognized industry standards setting organization. The identification signal shall carry sufficient information to identify the device and its geographic coordinates.
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- 10. Database gateways will offer “free” access The price of “free” is a micro-payment of privacy Database gateways will emerge, associating the geo-location and ID of a radio with the IP address and the (derived) contact information for the person responsible for the device There will be competitive differentiation between the several TV band database gateways, with some features offered to users, some to information harvesters and some to regulators, both in current TV white space allocation and other proposed shared bands