Goto Section: 15.701 | 15.705 | Table of Contents
Revised as of October 1, 2014
Goto Year:2013 |
§ 15.703 Definitions.
(a) Available channel. A six-megahertz television channel, as specified
in § 73.603 of this chapter, which is not being used by an authorized
service at or near the same geographic location as the TVBD and is
acceptable for use by an unlicensed device under the provisions of this
(b) Contact verification signal. An encoded signal broadcast by a fixed
or Mode II device for reception by Mode I devices to which the fixed or
Mode II device has provided a list of available channels for operation.
Such signal is for the purpose of establishing that the Mode I device
is still within the reception range of the fixed or Mode II device for
purposes of validating the list of available channels used by the Mode
I device and shall be encoded to ensure that the signal originates from
the device that provided the list of available channels. A Mode I
device may respond only to a contact verification signal from the fixed
or Mode II device that provided the list of available channels on which
it operates. A fixed or Mode II device shall provide the information
needed by a Mode I device to decode the contact verification signal at
the same time it provides the list of available channels.
(c) Fixed device. A TVBD that transmits and/or receives
radiocommunication signals at a specified fixed location. A fixed TVBD
may select channels for operation itself from a list of available
channels provided by a TV bands database, initiate and operate a
network by sending enabling signals to one or more fixed TVBDs and/or
personal/portable TVBDs. Fixed devices may provide to a Mode I
personal/portable device a list of available channels on which the Mode
I device may operate under the rules, including available channels
above 512 MHz (above TV channel 20) on which the fixed TVBD also may
operate and a supplemental list of available channels above 512 MHz
(above TV channel 20) that are adjacent to occupied TV channels on
which the Mode I device, but not the fixed device, may operate.
(d) Geo-location capability. The capability of a TVBD to determine its
geographic coordinates within the level of accuracy specified in
§ 15.711(b)(1), i.e. 50 meters. This capability is used with a TV bands
database approved by the FCC to determine the availability of TV
channels at a TVBD's location.
(e) Mode I personal/portable device. A personal/portable TVBD that does
not use an internal geo-location capability and access to a TV bands
database to obtain a list of available channels. A Mode I device must
obtain a list of available channels on which it may operate from either
a fixed TVBD or Mode II personal/portable TVBD. A Mode I device may not
initiate a network of fixed and/or personal/portable TVBDs nor may it
provide a list of available channels to another Mode I device for
operation by such device.
(f) Mode II personal/portable device. A personal/portable TVBD that
uses an internal geo-location capability and access to a TV bands
database, either through a direct connection to the Internet or through
an indirect connection to the Internet by way of fixed TVBD or another
Mode II TVBD, to obtain a list of available channels. A Mode II device
may select a channel itself and initiate and operate as part of a
network of TVBDs, transmitting to and receiving from one or more fixed
TVBDs or personal/portable TVBDs. A Mode II personal/portable device
may provide its list of available channels to a Mode I
personal/portable device for operation on by the Mode I device.
(g) Network initiation. The process by which a fixed or Mode II TVBD
sends control signals to one or more fixed TVBDs or personal/portable
TVBDs and allows them to begin communications.
(h) Operating channel. An available channel used by a TVBD for
transmission and/or reception.
(i) Personal/portable device. A TVBD that transmits and/or receives
radiocommunication signals at unspecified locations that may change.
Personal/portable devices may only transmit on available channels in
the frequency bands 512-608 MHz (TV channels 21-36) and 614-698 MHz (TV
(j) Receive site. The location where the signal of a full service
television station is received for rebroadcast by a television
translator or low power TV station, including a Class A TV station, or
for distribution by a Multiple Video Program Distributor (MVPD) as
defined in 47 U.S.C. 602(13).
(k) Sensing only device. A personal/portable TVBD that uses spectrum
sensing to determine a list of available channels. Sensing only devices
may transmit on any available channels in the frequency bands 512-608
MHz (TV channels 21-36) and 614-698 MHz (TV channels 38-51).
(l) Spectrum sensing. A process whereby a TVBD monitors a television
channel to detect whether the channel is occupied by a radio signal or
signals from authorized services.
(m) Television band device (TVBD). Intentional radiators that operate
on an unlicensed basis on available channels in the broadcast
television frequency bands at 54-60 MHz (TV channel 2), 76-88 MHz (TV
channels 5 and 6), 174-216 MHz (TV channels 7-13), 470-608 MHz (TV
channels 14-36) and 614-698 MHz (TV channels 38-51).
(n) TV bands database. A database system that maintains records of all
authorized services in the TV frequency bands, is capable of
determining the available channels as a specific geographic location
and provides lists of available channels to TVBDs that have been
certified under the Commission's equipment authorization procedures. TV
bands databases that provide lists of available channels to TVBDs must
receive approval by the Commission.
[ 75 FR 75835 , Dec. 6, 2010]
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Goto Section: 15.701 | 15.705
Goto Year: 2013 |
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