Beta

Slashdot: News for Nerds

×

Welcome to the Slashdot Beta site -- learn more here. Use the link in the footer or click here to return to the Classic version of Slashdot.

Thank you!

Before you choose to head back to the Classic look of the site, we'd appreciate it if you share your thoughts on the Beta; your feedback is what drives our ongoing development.

Beta is different and we value you taking the time to try it out. Please take a look at the changes we've made in Beta and  learn more about it. Thanks for reading, and for making the site better!

First White Spaces AP Gives Grandma the Internet

timothy posted more than 3 years ago | from the new-health-hazard-to-panic-about dept.

Networking 43

alphadogg writes "A Houston restaurant worker is the first user of a prototype wireless access point using low-frequency signals in the so-called White Spaces between unused UHF digital TV signals. The access point was set up in the home of a grandmother and homeowner who had never had a reliable Internet connection before the White Spaces spectrum created one. Widely but wrongly dubbed 'Super Wi-Fi,' these lower frequencies can reach further and penetrate buildings more easily than standard Wi-Fi radios, which implement the IEEE 802.11 specification."

cancel ×

43 comments

Jordan Air (-1, Troll)

Iris15 (2045366) | more than 3 years ago | (#35877844)

Jordan Fusion [slashdot.org] are high quality which is receive the large customers love.and Jordan Women [slashdot.org] ,the reason for their fashion is that they with its fashionable unique attracted numerous women shoppers.the last one is Jordan 1 [slashdot.org] ,i promise they can suit you well because the reliable quality and modern design.

To be the fashion trend setter,How can you miss the new style of the Jorden in 2011. There are fashionable and classical ones the Jorden offers for you such as Jordan Air [airjordan123.com] , Air Jordan 12 [airjordan123.com] , Air Jordan Shoes [airjordan123.com] .they are the body shape of Jorden wich enjoy high reputation at home and abroad.So lead the life fashion and welcome to visit our website.

Re:Jordan Air (0)

Anonymous Coward | more than 3 years ago | (#35879598)

This is disappointing. I thought this was going to be a troll about Burkas.

alphadogg -- A question for you! (1)

TrisexualPuppy (976893) | more than 3 years ago | (#35880160)

The poster copied something from the article: "using low-frequency signals."

What does this mean? We are talking about UHF here, so they obviously aren't low-frequency signals. Do you mean low-bandwidth or low-amplitude signals? Slashdot is "News for Nerds," and such details truly do matter for those of us who are actually nerds and are trying to learn or understand something from the postings here. :\

MOD PARENT UP (0)

Anonymous Coward | more than 3 years ago | (#35880662)

Parent raises a great point

Re:alphadogg -- A question for you! (1)

Sepodati (746220) | more than 3 years ago | (#35881378)

It's low frequency when compared to 2.4/5 GHz used in 802.11 now. I think thats what they mean.

Re:alphadogg -- A question for you! (0)

Anonymous Coward | more than 3 years ago | (#35884508)

LOL!

UHF = Ultra High Frequency

Is slashdot filled with a bunch of high schoolers or what?

Re:alphadogg -- A question for you! (1)

damnfuct (861910) | more than 3 years ago | (#35886178)

Technically, conventional wireless is also in the UHF range, so it makes proper sense to say that these new-application frequencies are lower (which they are). On a side note, some applications of the conventional wireless are in the SHF range, which is higher-frequency than UHF. http://en.wikipedia.org/wiki/Radio_spectrum#By_frequency [wikipedia.org]

negative space (0)

MindPhlux (304416) | more than 3 years ago | (#35877856)

I always knew grandma would find the unknowable other in vast negative space...

rip grandma :(

White Spaces AP (1)

MrEricSir (398214) | more than 3 years ago | (#35877880)

I took White Spaces AP in high school. It saved me a lot of time in college!

White Spaces? (1)

m1xram (1595991) | more than 3 years ago | (#35877904)

Is this some kind of racist WiFi?

Re:White Spaces? (1)

rbrausse (1319883) | more than 3 years ago | (#35877920)

nah, the drivers can only coded in whitespace [wikipedia.org] . I'm looking forward for color spaces APs [wikipedia.org] !

Re:White Spaces? (1)

operagost (62405) | more than 3 years ago | (#35881728)

Yes! Even more racist than the master and slave IDE terminology! And if you disagree, that means YOU'RE racist!

Speed, anyone? (1)

wvmarle (1070040) | more than 3 years ago | (#35877912)

Interesting tech. Would be nice to see it employed more.

But nothing in the article about transmission speeds.

Or potential distance covered, and interference with other white space devices.

Re:Speed, anyone? (1)

m1xram (1595991) | more than 3 years ago | (#35877942)

Follow the links. First one takes you to the real article. In the real article there is something like "What the heck is Super WiFi?" on the left about a paragraph down. It's lower frequency than WiFi so expect less throughput bandwidth unless the spec allows more than one channel at a time.

Re:Speed, anyone? (2, Informative)

Anonymous Coward | more than 3 years ago | (#35878042)

Wikipedia says speeds would be in the 80 to 800 Mb range. I suppose then that the actual speeds for a typical user would be in the 8 to 80 Mbit range.

In other words it would be fast enough for standard definition video and often fast enough for HD video.

WUT?? (3, Insightful)

$RANDOMLUSER (804576) | more than 3 years ago | (#35877918)

Unreadable most ever headline.

Re:WUT?? (1)

damnfuct (861910) | more than 3 years ago | (#35886202)

Maybe she redeemed her "one free internet" coupon

Do not cut the cable !!! (0)

Anonymous Coward | more than 3 years ago | (#35878004)

Hope shel will not cut the cables ;-)

....

Thinking about it, there is no cables this time :-)

Already use CB Radio Wi-Fi. (2)

Anonymous Coward | more than 3 years ago | (#35878064)

Have a Station that I created myself using CB Radio as a half-duplex physical layer for low-rate TCP/IP communications by modulating through my Soundcard, getting reliably around 500 Baud 3 miles range with 2-watts: it's enough to send fax-like messages like what NOAA Wether stations do on storm alerts.

Working on migrating to RS232C to use a simply timer circuit and make it audible with a little peizo-electric speaker setup, to free-up my Soundcard.

Anyone remember Wavewhore that would use an actual ISA-bus TV card to modulate across the same frequencies of Television to get internet access directly from the root Station allocations? Too bad we're all paying for it now.

Re:Already use CB Radio Wi-Fi. (0)

Anonymous Coward | more than 3 years ago | (#35878194)

Do not migrate it, just get a usb sound card. In case you need to change the computer in a rush (like a hw failure), all new computers come with sound card, but almost none with rs232.

Re:Already use CB Radio Wi-Fi. (0)

Anonymous Coward | more than 3 years ago | (#35879002)

all new computers come with sound card, but almost none with rs232.

or just get a usb-serial converter?

Re:Already use CB Radio Wi-Fi. (1)

Duradin (1261418) | more than 3 years ago | (#35881330)

If you're in the US and in an area where Uncle Charlie keeps a close watch on things you may want to rethink using a CB radio, data transmissions aren't legal. HAMs can do packet radio iirc, but not CB.

Meriahkan Pesta Ulang Tahun Bersama GarudaFood (-1)

mataiklan (2050258) | more than 3 years ago | (#35878110)

Meriahkan Pesta Ulang Tahun Bersama GarudaFood By Estojaya Paket Ulang Tahun ultah.com solusi cerdas merayakan pesta ulang tahun tanpa Ribet dan tidak bikin kantong bolong. http://www.estojaya.co.cc/2011/04/meriahkan-pesta-ulang-tahun-bersama.html [estojaya.co.cc]

wrong turn wed., a bunker in every backyard (-1)

Anonymous Coward | more than 3 years ago | (#35878404)

this baby is free, as in restrictions apply. if one citizen has a bunker, we laugh. when more citizens have bunkers... we pretend to laugh. when almost every chosen one has a bunker, whose laughing now?

more duplicitous details to be released. start digging if you live in utah, near the mormormonic stadium, because you guys are pre-qualified. does god know how to pick 'em? who does us better, by the book of multiple unchoices?

professional lions refusing to eat muslin, queers (-1)

Anonymous Coward | more than 3 years ago | (#35878486)

time marches on, catches up. lions? chariots? honestly

upping the ante, chosen 1's get limos, 747's (-1)

Anonymous Coward | more than 3 years ago | (#35878568)

bragging again? failing to mention that neither absurdity operates well under water, or without the precious crudeness, we unchosens just adore, as reflected in the most popular column. more idle idol debauchery please? our heroes. is this the love? it feels like...something. may i have another...

note: 2 digit chosen ones are trained to believe that their chariots are as good as it gets. that notion has recently been absolutely unproven, again. so, we welcome our 2 digit surprised 'guests'?

News From the Future (0)

Virtucon (127420) | more than 3 years ago | (#35878526)

"Maggie Smith, a former restaurant worker, has died from advanced colon cancer as a result of being one of the first to use the portable WiFi hotspot device. Smith at the time thought he was advancing technology when volunteering for the device. Unfortunately the manufacturer didn't do enough radiation analysis and didn't realize that the device created frequencies that caused her to fart uncontrollably and induced Irritable Bowell Syndrome as well. This ultimately led to colon cancer which ended her life. Manufacturers for the WiFi device could not be reached for comment."

Re:News From the Future (2)

snspdaarf (1314399) | more than 3 years ago | (#35879970)

"... Smith at the time thought he was advancing technology when volunteering for the device. Unfortunately the manufacturer didn't do enough radiation analysis and didn't realize that the device created frequencies that caused her to fart uncontrollably and induced Irritable Bowell Syndrome as well.."

Not to mention the Spontaneous Hermaphrodism Syndrome.

Re:News From the Future (1)

Virtucon (127420) | more than 3 years ago | (#35880218)

LOL, oops "In other news, this reporter has been fired for not checking his personal pronouns."

Reach further and penetrate more (1)

bl8n8r (649187) | more than 3 years ago | (#35878578)

That's some damn good marketing.

It could provide some ISP competition (0)

Anonymous Coward | more than 3 years ago | (#35878588)

My local small ISP can't compete with the local wired broadband providers. He still provides some dial-up and hosts servers and web sites to stay afloat.

We, the customers, are getting screwed by the landline providers and would gladly jump ship if there were any kind of reasonable competition. For instance, my daughter lives in another city and can get a good, cheap data plan with her phone. She gets her internet by tethering to her phone, and she pays less than we do.

The conventional equipment to provide wireless service is too expensive for the small ISP. If this new technology is cheaper to buy and cheaper to install, we'll buy him the stuff because we hate the landline guys that much.

How could it be cheaper to install? Better penetration of trees and buildings means the equipment could have better range. That means you wouldn't need as many repeaters/base stations. I'm guessing the installed cost could be as little as a quarter of the existing equipment. (If you get twice the range, you get four times the coverage. Yes, I do realize that the ultimate limit is determined by signal to noise ratio.) I would also predict that, within a year, we will have enough experience with the new technology to know for sure.

specs? (1)

argStyopa (232550) | more than 3 years ago | (#35878660)

I can't find anything in any of those links that describes technical details of Whitespace wifi? Max bandwidth? Positives/Negatives? The Wiki article talks about a suit filed by broadcasters against the FCC for licensing this tech, as they assert devices in these frequencies cause interference, but says a result was expected Feb 2011...with no update.

Re:specs? (1)

tlhIngan (30335) | more than 3 years ago | (#35881822)

I can't find anything in any of those links that describes technical details of Whitespace wifi? Max bandwidth? Positives/Negatives? The Wiki article talks about a suit filed by broadcasters against the FCC for licensing this tech, as they assert devices in these frequencies cause interference, but says a result was expected Feb 2011...with no update.

"White Space" is about using the unused broadcast TV bands that (may) exist - if you look at the bandplan, a wide swatch of bandwidth is reserved for broadcast (OTA) TV. In many places, much of that band is empty (but in crowded urban areas, there is also a chance there is no space available).

The problem is that these devices need to know what frequencies are in use so they don't interfere with existing licensees' traffic (i.e., TV stations). The problem is, short of a comprehensive site survey, it's very difficult. If you're in a valley deploying these devices, someone on the hill could get interfered with if your device picks a frequency that's in use (as it can't pick up the signal the person on the hill can).

Many solutions have been proposed, besides a reception test - including a geolocated database where a white space device would use its built-in GPS to determite its location, then use a database to query what frequences are clear. The problem is, of course, how to query such a database with no connection (any built in one will be obsolete quite rapidly).

Google is a big proponent and has offered to host such a database.

Low Frequency??? (2)

Maximum Prophet (716608) | more than 3 years ago | (#35879074)

UHF => Ultra High Frequency. Yet, somehow the spaces between are channels are "low frequency". Perhaps they mean low bandwidth, as each unused channel in only about 6MHz. Alternately, this could just be a redefinition of what "High Frequency" is.

Re:Low Frequency??? (1)

mortonda (5175) | more than 3 years ago | (#35879474)

I believe UHF was named back in the FM days when they didn't have modern 2.4 Ghz type transmitters...

Re:Low Frequency??? (2)

Phreakiture (547094) | more than 3 years ago | (#35879922)

Earlier than that, actually, but not really the point. The nomenclature is standardized, and "low frequency" refers to frequencies four orders of magnitude lower than UHF. It would, however, be correct to say lower frequency. Technically, WiFi is UHF, also, as UHF is from 300 MHz to 3.0 GHz.

(Yes, I know, 802.11a, at 5.8GHz, is not UHF, but SHF. Most WiFi is 802.11b/g/n, so that's what I'm using as a baseline)

Re:Low Frequency??? (1)

damnfuct (861910) | more than 3 years ago | (#35886364)

The nomenclature is standardized, and "low frequency" refers to frequencies four orders of magnitude lower than UHF

True, but then it would be Low Frequency; the caps denoting a proper label and not a relative term

Re:Low Frequency??? (1)

Sepodati (746220) | more than 3 years ago | (#35881538)

Low frequency as compared to 2.4/5 GHz used with WiFi. "Lower" would have been more appropriate, though, I guess.

The Author is Misinformed (0)

Anonymous Coward | more than 3 years ago | (#35880112)

Lower frequencies do NOT penetrate better than higher frequencies. If they did we'd be using radio waves to look inside of our bodies instead of X-rays.

Re:The Author is Misinformed (2)

robot256 (1635039) | more than 3 years ago | (#35881840)

I'm sorry, but we use X-rays for medical scans precisely because they penetrate WORSE than lower frequencies--otherwise they would go straight through the body tissues and we would not see anything! Not to mention that longer wavelengths would produce lower-resolution images.

It's a well-known fact that the attenuation of electromagnetic waves is a direct function of the size of the obstacle relative to the wavelength of the energy (d/lambda) [wikipedia.org] . This is why lower frequencies (with longer wavelengths) travel farther with the same amount of output power.

Re:The Author is Misinformed (1)

damnfuct (861910) | more than 3 years ago | (#35886298)

Even if did interact noticeably, the wavelength of UHF is in the metre range whereas x-rays are around 1 nm.

Patient: "well doctor, what's the result of the radio image?"
Doctor: "This blobby thing here is your body"
Patient: "... and?"
Doctor: "That's all"

Re:The Author is Misinformed (1)

robot256 (1635039) | more than 3 years ago | (#35886822)

LOL! You made my day.

No Wonder They Confused (0)

Anonymous Coward | more than 3 years ago | (#35902218)

"...low-frequency signals in the so-called White Spaces between unused UHF digital TV signals"
"Cool, what's UHF stand for?"
"Ultra High Frequency"
"But you just said they were low-frequency signals."
"I know...."

Check for New Comments
Slashdot Account

Need an Account?

Forgot your password?

Don't worry, we never post anything without your permission.

Submission Text Formatting Tips

We support a small subset of HTML, namely these tags:

  • b
  • i
  • p
  • br
  • a
  • ol
  • ul
  • li
  • dl
  • dt
  • dd
  • em
  • strong
  • tt
  • blockquote
  • div
  • quote
  • ecode

"ecode" can be used for code snippets, for example:

<ecode>    while(1) { do_something(); } </ecode>
Create a Slashdot Account

Loading...