FCC Plans to Allow Wireless Networking on Unused TV Channels
RKBA writes "Federal regulators have endorsed a plan to use vacant TV bandwidth for wireless Internet connections. Federal Communications Commission Chairman Michael Powell says it would 'dramatically increase' the availability and quality of wireless Internet connections -- especially for people in rural areas. Powell says it would be like 'doubling the number of lanes on a congested highway.' But TV broadcasters oppose the proposal. They argue that it would interfere with over-the-air television signals for millions of people. The FCC commissioners voted unanimously to begin the lengthy rulemaking process for the plan."
Anybody who says that Michael Powell is in the pocket of the broadcasters or any other major company doesn't know what they're talking about, and this is the proof for anybody who doubts that.
The FCC is actively looking to recycle frequency space for bandwidth wherever possible. I'm not even sure this is a workable solution... but just the fact that they're even going to open hearings about it is good for the masses.
'doubling the number of lanes on a congested highway.'
More like putting a bike lane between two lanes of freeway.
With all the daytime talk shows and nighttime reality shows on now, I'd say that all channels are vacant.
I'd especially argue that there are certain religious broadcasters who are putting out such unwatchable programs that I doubt the people who are paying for the operation are even watching. I'm not against such operations on religious principal, but the idea that if nobody is watching, you're wasting the bandwidth.
There should be a minimum standard that should be attained by all TV stations for a signon-to-signoff ratings average. Even a religious or shopping program can survive, but there has to be at least some interest in the community in order for the station to keep on the air.
The broadcast media industry have a history of opposing technology that has a hair of a chance of affecting their signal--whether or not the science is on their side.
For example, the National Associaton of Broadcasters (and even National Public Radio) opposed extending licenses for low-power radio on the grounds that it would interfere with existing licensed signal--even though most people who really understand this know that it's not the case.
The real issue in these cases is usually not technical--it's about control over the airwaves.
UHF covers a massive chunk of spectrum -- from 470 MHz to 890 MHz. Even if you carve out some 18 MHz notches for local UHF channels, you still have hundreds of MHz of usable spectrum. And in rural areas, the full 420 band could be used for some serious wireless networking. With good compression/encoding and high enough SNR, multigigabit wireless might be possible.
Two wrongs don't make a right, but three lefts do.
It's actually not that much, a little more than 1MHz. That'll do about 500kb, or 250kb each way. And that's only if you use the entire spectrum for one connection.
Sig is on vacation
I agree the dynamic assigning of frequencies could be quite useful. Right now the system is setup akin to a company buying an entire road and then using it 30% of the time, meanwhile people that didn't pony up the money or have their roads jammed full just sit and look at all the open space they can't use one over.
Problem is, once you start dynamically assigning frequencies, who is to say which user is the highest importance? Every industry will yell they should be higher than everyone else. Also, it requires all the radios to play very nice and move over when someone else comes in. Trunking systems are a start, but anyone that has used one knows they are not as reliable as some would hope, and they are hell for interoperability (note: that is the DHS buzzword of the year).
The software defined radio should help a ton in getting this efficient method of frequency use into the mainstream, and they are still a few years off. Some people argue bandwidth is nearly infinite and people aughta just shut up about it... I ask them to try to use a 5GHz radio to talk out of a mountainous area or beam a microwave link using 5MHz. There always will be frequencies "worth" more than others, and the fights over them will always exist.