Federal Communications Commission Kevin Martin says plans by Google, Microsoft, Intel, Motorola, Intel and other tech companies to use the interference buffer zones between digital television channels to deliver unlicensed broadband will not cause harmful interference to digital television broadcast signals.White space devices will not cause undue interference with digital broadcasts
or wireless microphones, Federal Communications Commission Chairman Kevin
Martin said Oct. 15. Martin told reporters in a conference call he plans
for the FCC to vote on allowing unlicensed use of the spectrum Nov. 4.
Google, Microsoft, Intel, Motorola and other IT companies hope to deliver
unlicensed broadband and other advanced wireless services through white spaces,
the interference buffer spaces between digital television channels.
Broadcasters, along with sports leagues and entertainment venues that use
wireless microphones, have adamantly opposed the use of white spaces.
"You can use utilize the white spaces without causing undue
interference," said Martin, who added that FCC engineering reports that
include testing results on white space devices will be released Oct. 15.
"I'm hoping to take advantage of utilizing these airwaves for broadband
services to allow for unlicensed technologies and new innovations in that
space."
The spectrum between the channels will become available after Feb. 17, 2009, when
broadcasters make the switch to digital broadcasting. The FCC began testing
white space devices with mixed results in January using a prototype device
supplied by Microsoft. In July, the agency moved the tests outdoors using
devices from Motorola, Philips, Adaptrum and InfoComm International.
If the FCC supports the use of white spaces, device makers such as Motorola
could start manufacturing technology for laptops, smart phones, PDAs and
set-top boxes that can utilize those white spaces. All of the devices would
have to be certified by the FCC.
Martin stressed that any white space device must have sensing technology
linked to a geolocation database, allowing the device to detect and avoid
broadcast signals. Devices would also be limited to low power levels if used
directly adjacent to broadcast channels.
For the interference concerns of wireless microphone users, Martin said
several swaths of spectrum would be devoted to those devices and listed in the
geolocation database.
"With this endorsement from the technical experts, it's time to shed
the outdated standards that have placed the public airwaves under lock and
key," Ben Scott, policy director of Free Press, said in a statement.
"We urge the FCC to move forward with policies that will increase
competition and innovation, paving the way for this revolutionary new wireless
marketplace."
Martin's white space announcement marks the second major wireless news out
of the FCC this week. An
engineering report released Oct. 10 concluded that two-way broadband
service in the 2,155MHz to 2,180MHz advanced wireless services band will not
cause harmful interference to wireless services of other carriers.
Click here to read more about the FCC free wireless broadband proposal and how wireless carriers reacted.
That report clears the way for the FCC to move forward with a spectrum
auction in 2009 that would require the winning bidder to provide a free
wireless broadband tier to 50 percent of the United
States in four years and 95 percent of the
country within 10 years.
Mobile & Wireless 
