How Many Wireless Technologies Can We Handle? 265
Golygydd Max writes "The space for high-speed wireless networking is getting mighty crowded. Techworld reports that a new company, Sibeam, has entered the fray, hinting at a 60GHz technology to compete with the likes of Wimax, UWB and the others. Does the world really need another player when the future is still so unclear?"
standardize (Score:2, Insightful)
Re:standardize (Score:2)
It sounds like your school is being very wasteful and not looking ahead at all.
Re:standardize (Score:3, Informative)
802.11 doesn't work that way.
Every time an 802.11 device sends a packet, it includes a preamble sent at 1 Mbit. The preamble indicates the speed the rest of the packet will be sent at. Thus, the network can support each client sending at different data rates.
A single 802.11b connection will not significantly reduce the
Compete w/ WiMax? (Score:2, Insightful)
Re:Compete w/ WiMax? (Score:4, Insightful)
Re:Compete w/ WiMax? (Score:2)
Re:Compete w/ WiMax? (Score:2)
If you're talking about whether better open standards float to the top, Betamax is not a good counterexample.
Comment removed (Score:5, Interesting)
Re:Compete w/ WiMax? (Score:2, Insightful)
Re:Compete w/ WiMax? (Score:2)
Re:Compete w/ WiMax? (Score:2)
Yes it does (Score:3, Funny)
Re:Yes it does (Score:2)
The Movies! (Score:2)
Ironically enough, the ONLY betamax videos I ever saw when I was younger were owned by my friends father, who only had pr0n. For a few years, I thought betamax's were just used for pr0n.
Bad Science (Score:2)
In natural selection the only thing that really matters is if you reproduce. With technology it is what sells. The sad thing is what sells is often far from the best. If what was best always won the Amiga, ST, and Mac would have driven a stake in the heart of MS-DOS. OS/2 would have killed Windows 3.1. And slashdot would be using CSS.
Re: (Score:2, Insightful)
Betamax is not used (Score:3, Insightful)
First, this is a good article here:
http://en.wikipedia.org/wiki/Betamax [wikipedia.org]
But to your point:
No, it isn't. You're thinking about the pro version of Beta known as Betacam, which I believe uses similar tapes, but a different technology. A description can be found here:
http://betacam.palsite.com/format.html [palsite.com]
Re:Wasted Capital (Score:5, Interesting)
IMO these standards are red herrings anyway. What we need is for cell phones to drop back into the Mhz range again so that they can penetrate building walls. These microwave frequencies are not so good for that. It takes too much power to do it. People don't just use cellphones in their cars anymore.
And 60 Ghz is ridiculous. It will be bouncing off solid objects like a radar gun. You may as well use a modulated laser beam. It will take huge amounts of power to penetrate even the thinnest building walls.
Frequency goes up... (Score:5, Funny)
Re:Frequency goes up... (Score:2)
Exactly - here's an 850 TeraHertz wireless [lightpointe.com] product (if I did my powers of 10 right...)
Maybe if they marketed it like that they'd get more "oooh, big number" customers. Oh, right, that market segment doesn't understand "tera" yet. Maybe in 2 years when computers start coming with 1TB disk.
Re:Frequency goes up... (Score:2)
Re:Frequency goes up... (Score:2)
Simple answer (Score:4, Funny)
Re:Simple answer (Score:2)
Wye knot? Eye dew. Butt four sirious - dough ay spill checquer cant ripless gooed riting, gooed spilling his quay two gitting yore massage too duh raider. Bat spilling jest machs ewe luck stupid.
When the future is still so unclear? (Score:4, Insightful)
Re:When the future is still so unclear? (Score:3, Funny)
Bigger antennae.
Sure, Why not. (Score:5, Funny)
Re:Sure, Why not. (Score:3, Funny)
Survival of the fittest (Score:3, Insightful)
A good first step would be to shut off analog TV and radio. That bandwidth is too valuable for us to just sit on.
Re:Survival of the fittest (Score:2)
No, it's not. You can keep going higher and higher in frequencies, but as you get above a few GHz problems start happening -- the attenuation due to air and things like rain increases, you get signals that can't even go through trees or walls, and the cost of the components to deal with these ultra high frequencies goes up -- and eventually you don't have radio at all, but instead infrared. (The edge of the IR range is often given at 300 GHz [wikipedia.org] though of course there is no
Re:Survival of the fittest (Score:2)
Yes, there's lots of spectrum out there if you're willing to go to high enough frequencies. But it's not infinite.
I'm a little confused, where do you two disagree there?
Re:Survival of the fittest (Score:2)
Here's some more true words :
Actually, one certainly could argue that the EM spectrum is infinite -- because it is. The only problem is that we rely on certain properties of radio waves, and some of them fall apart as the frequencies get higher and higher. But we certainly could encode data into IR, light, UV, etc. -- and certainly do -- but it's not radio anymore.
(But it works well for fib
Agreed (Score:3, Informative)
Of course, when the government can ju
The future becomes as clear as it will ever be (Score:4, Insightful)
We create it in the present.
KFG
Re:The future becomes as clear as it will ever be (Score:5, Funny)
Re:The future becomes as clear as it will ever be (Score:2)
Re:The future becomes as clear as it will ever be (Score:2, Funny)
I'm afraid my mom is the ceramicist in the family. I've only thrown enough to be able to say I've done it, but I can act as a middleman if you'd like.
I can, however, rephrase my point in a manner that even a pothead might be able to comprehend:
I can supply a definitive answer to the question, but it is deep and complicated and I must necessarily give the matter due deliberation.
Set to peak in 10 years. .
KFG
Re:The future becomes as clear as it will ever be (Score:2)
Set to peak in 10 years. . .dude.
You have too much THC on board. It only feels like 10 years. It's actually five minutes.
Isn't that the WHOLE POINT!?!?! (Score:2, Insightful)
I beleive if they waited for the future to be clearer there could already BE a new standard and they would have lost.
Twelve (Score:5, Funny)
Re:Twelve (Score:2)
Oblig. Simpsons (Score:3, Funny)
Homer overhears and says, "Eight!".
Lisa: "That was a rhetorical question!"
Homer: "Oh. Then, Seven!"
Lisa: "Do you even know what 'rhetorical' means?"
Homer: "Do I know what 'rhetorical' means?"
Re:Twelve (Score:4, Funny)
No, we can handle 26 wireless technologies. More if we add Greek letters.
Not a Bad Thing (Score:3, Insightful)
More is better (Score:2)
Without more spectrum and technology for ubiquitous IP networks, we will be stuck with whatever gets thrown out to the consumer and at whatever cost the big names can squeeze from our wallets.
More is better. More dual and tri-band devices, Wireless VoIP, streaming audio and video, until we
Go wireless! (Score:2)
I kid you not, I cant turn on my notebook without it auto connecting to the law firm upstairs that seems to have a wide open coast to coast WAN. I can see networks in just about every major US city. Whats more it looks to me like this is just an access point some yahoo hooked up so he wouldn't need to plug in his notebook every day. Could be that their IT peopele dont even know about it.
Wifi jammer? (Score:2)
Comment removed (Score:5, Interesting)
Re:60Ghz!!! (Score:2)
I think there are American military satellites that communicate with each other at 60GHz precisely because the O2 absorption makes ground intercept that much harder.
Re:60Ghz!!! (Score:2)
Good observation, but the key word in `the higher your radio frequency, the harder it is to pass through solid objects' is radio. Yes, radio waves are electromagnetic radiations just like gamma rays, but it's a rule of thumb, not a hard and fast rule that applies to all EM radiation of any frequency.
And as a rule of thumb, for radio, it's true, as long as you're not talking about going through things that are good conductors of elect
Re:60Ghz!!! (Score:2)
Re:60Ghz!!! (Score:2)
Re:60Ghz!!! (Score:2, Informative)
In the opposite direction, very high frequencies use only the surface of a conductor. Consequently, microwaves aren't run on wires, but are actually sent down hollow "wave guides". If you need any sort of power, you'd need a massively thick wire, but the energy will just be on the outer surface. So we us
Re:60Ghz!!! (Score:2, Insightful)
Re:60Ghz!!! (Score:3, Informative)
At the very high frequency edge of the electromagnetic spectrum, photons start to get through matter more easily again.
But the stress is on _very_ _high_.
We are talking about GHz here. The worst penetration power is somewhere in the UV. Up to that it still declines, and further way to high energy it increases. (simply because how the photons interact with matter. With higher energy they start to directly excite molecule rotations, then vibrations or phonons in solid bodies...
So you c
Movies... (Score:3, Funny)
Re:Movies... (Score:2)
Once inside the matrix, the implication was that there were special software characteristics of certain wired telephones. It had nothing to do with whether they used copper or 900 mHz, just that they were
Re:Movies... (Score:2)
If you thought that it was bad here and now with people leaching bandwidth via a can-tenna, imagine how efficient a sentient machine race could hack that.
Especially if your transmitting something essential, like, I dont know, your own consciousness over the signal. Seems to me that all the machines would have to do to KILL you would be to fire up a microwave.
Re:Movies... (Score:2)
How come as soon as the cables between the computers were disconnected, the viral attack was stopped in its tracks? I just have this image of a bunch of semi-intelligent software agents suddenly saying "oh no! we can't talk to the computer over there anymore! oh well, I guess we lost."
Just the same, I allow the writers some literary license, and recognize that the point of their sh
Re:Movies... (Score:2)
Re:Movies... (Score:2)
Re:Movies... (Score:2)
Matchbox philosophy: (Score:4, Insightful)
Does the world really need another player when the future is still so unclear?
Isn't that exactly when you need as many different minds working on a problem? The future will clarify itself.
Dumb (Score:5, Insightful)
What an idiotic statement (and it is a statement, disguised as question). The future is determined by the choices we make today. More choices allows us to pick the best of those available, thus resulting in the "best future".
Line of Sight? (Score:2)
Re:Line of Sight? (Score:2)
Because the amount of data you can transmit depends on two factors -- 1) the signal to noise ratio and 2) the bandwidth available.
Suppose you can use 60 to 61 GHz for this -- that gives you one full GHz of bandwidth. Compare this to an 802.11b channel that's only 30 MHz in size, and you can see that you can transmit over 30 times as much data in a given amount of time.
The higher the frequency, the more bandwidth is generally available, as a
Re:Line of Sight? (Score:2)
I thought about this some more, and realized that I'm basically wrong about this.
If O2 specifically absorbs 60-64 GHz signals, then it also specifically emits 60-64 GHz signals, which would be ... noise.
So in order to get good range with a 62 GHz signal, you'd need more power than you'd need with a lower (or higher, for that matter) frequency.
Of course, with such a high frequency, you could make very directional antennas that are very small, so you
Re:Line of Sight? (Score:2)
I think you miss read what the article you linked to says. It says "10.000 db/km" not "10,000 db/km" (it's a decimal point, not a comma). Very large difference there.
Re:Line of Sight? (Score:2)
Don't Forget WiFi Speed Spray (Score:2)
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&ite
Re:Don't Forget WiFi Speed Spray (Score:2)
Of course we need another player (Score:2)
Of course we do! Did we only need one car manufacturer when the automobile was introduced? Or maybe we should have just stuck with one operating system (hmmm...Microsoft perhaps) with no competition. I mean, c'mon...the future of computing was pretty unclear. Did we need new storage devices for computers (Bernouli drives, Syquest, Zip, Jazz, CDs, tape, DVD...) The future seems pretty unclear there too.
The point is, to sit
Re:Of course we need another player (Score:2)
You must work for Microsoft...
Unfortunately if they could [and they do] they'd change just enough to lock out competitors. It isn't about being better anymore. You think if Intel had standing they'd need exclusive deals? They'd be able to still sell volume to Dell and not lock them in if their product was worth a damn.
Same for many others [Atrac3 anyone?].
Business is not about being fair and open market'ish. It's ab
Re:Of course we need another player (Score:2)
Suffice it to say there are WAY MORE businesses that are lame ducks then good ones.
If you need me to show you evidence of self-serving products then you need to open your fucking eyes.
Tom
Re:Of course we need another player (Score:2)
You're really new here [to life] then. No matter what, and I mean anything, you do, good or bad, proper intentions or not, no matter what you do, someone will find a fault with it.
You could donate 1000s of hours of work and still someone would troll you, emailing hate mail and posting nonsense shit in [for instance] usenet. All because you accomplished something with your life and they haven't.
Maybe I could
Re:Of course we need another player (Score:2)
Wow imagine that.
Tom
None? (Score:2, Interesting)
I mean as it stands most retail wi-fi cards don't work in linux [except for prism54 intersil style which are hit and miss].
The problem isn't the underlying standard [though I'd say it's overtly complicated for such a simple idea] it's the idiots running the decisions.
I mean if a handful of ***amateur radio*** folk can make a 56K link work OVER K
Re:None? (Score:2)
RaLink, Atheros and Centrino chipsets are well-supported in Linux. There is probably more I can't think of too.
Re:None? (Score:3, Insightful)
E.g. write the Khz you want to a 32-bit register
I've heard the excuse you gave before but frankly I don't beleive it. It's TRIVIAL to put a switch somewhere in an ASIC to just trip and say "out of range".
And really when it gets down to it we don't need access to the radio, we need to say
read packet to $MEM of size $SIZE.
Write packet from $MEM of size $SIZE
Where "p
Re:None? (Score:2)
Different regions have different frequencies that are out of bounds. For example, Canada and the US allow different frequencies making certain channels out of bounds. Similar restrictions apply to the EU and Asia.
Hardware vendors don't want to have different cards/chipsets for each country so they set frequencies in firmware/software.
Re:None? (Score:2)
Second, how hard is it to make a run of North American, run of Asian, etc chips? This really sounds like a "non problem".
Tom
Re:None? (Score:2)
Re:None? (Score:3, Informative)
Amateurs are licensed operators and so equipment designed for their use need not be type-accepted: the operator is expected to obey FCC regs rather than the device.
I don't think the company would be liable if someone modified their equipment to transmit out of band or at higher power
Re:None? (Score:2)
Oh, you mean I can buy BUNDLED LAPTOPS with things like centrino? Well good for fucking them.
If I can't walk into Futureshop and buy a PCMCIA card with a compatible chipset then that's effectively "nothing available".
Tom
One less than what we have (Score:3, Insightful)
Insecure, unscalable, and the newest access points are flooding the 2.4 ghz by using all 11 channels as opposed to behaving and using one.
802.11 has ruined the 2.4 ghz spectrum, I ever start my own wireless ISP, I won't even try to use 2.4 ghz radios.
Re:One less than what we have (Score:2)
802.11 should NEVER have had crypto in there.
It should be JUST the transceive protocol and standards. On top of that you build a crypto stack [like ipsec]. It's when you "re-invent the wheel" that you into trouble.
Of course that type of thinking is dangerous because then people could use it for something else... e.g. ipsec ontop of wimax or UWB or something.... wowswer!!!
My big problem with 802.11 isn't the standard it's the shitty implementations that pass as "
Re:One less than what we have (Score:4, Interesting)
They essentially took ethernet, and shoved it into the air. 802.11 uses collision detection, just as ethernet does. The problem is, 802.11 has no ability to notify the clients of each other's existence, so if you are sitting right next to each other, fine, you'll see each other, collision detection does its job. However, stick two clients on opposite sides of the access point, out of range of each other, and you have a problem. Neither client can see the other, so collision detection fails miseraby. You get what is know as the invisable neighbor problem. You are firing, your neighbor is firing, neither of you are aware of the other, and the access point is overwhelmed. Performance suffers for both people, and 802.11 still needs to fucking die.
Are you complaining? (Score:3, Insightful)
I'm waiting (Score:2)
Re:I'm waiting (Score:2)
Even if there is noise I still maintain ~190Mbit/sec copying files from one RAID-5 to another RAID-1 at home using a 150$ Ge switch. [never really timed mem-to-mem operations which probably get upwards of 300-500Mbit/sec].
Let's see some wireless standard get that
Tom
Re:I'm waiting (Score:2)
+++
My last.fm page [www.last.fm]
electromagnetic spectrum (Score:2)
The clear future (Score:2)
since when has the future been clear?
Simple Answer (Score:2)
Gamma rays! (Score:2)
Re:more is better (Score:2)
Re:you should have seen it coming (Score:2)
By Han Solo
60 GHz (Score:3, Interesting)
My book with this info is at home, but IIRC, 60 GHz is one of the trouble spots for RF transmission because of absorption by atmospheric oxygen. This phenomena is exploited for some secure radios.
Re:you should have seen it coming (Score:2)
Re:Who will win? (Score:2)
If there are going to be too many wireless possiblities set before us, I think this could (keyword: could, so don't flame me for this) boil down to an issue of speed. Not a technical data transfer type of speed, but the rapidness of one technology's adoption into the open wilds. A good number of less viable tech could fall by the wayside early on, but I think th