Mobile Cell Phone Towers For Disaster Relief 210
cerberus4696 writes "According to today's Denver Post, Verizon recently premiered one of its new Cells On Light Trucks (COLTs), a complete, self-contained CDMA cell that can be moved to wherever it's needed, such as the scene of a natural disaster or a large public event. Since a standard CDMA cell can only handle a theoretical maximum of 62 calls at a time (usually less in practice), the network of permanent fixtures can quickly become overloaded in high-use situations. Verizon already uses a larger version of the system known as a Cell On Wheels (or COW; gotta love these acronyms), but as it takes three trucks and the better part of a day to deploy, nimbleness of response has apparently been an issue."
sheesh (Score:2, Informative)
Cell towers in remote places... (Score:3, Insightful)
Re:Cell towers in remote places... (Score:2)
Re:Cell towers in remote places... (Score:2)
Re:sheesh (Score:2)
Well that certainly defeats the claim that America is the first to do it.
This is usually used here in shows or sports event (Score:3, Insightful)
Re:sheesh (Score:3, Interesting)
A couple of years later I saw a SOW (Switch on Wheels), though it took a little more effort to
Pictures? (Score:4, Interesting)
Remembers me about those Lasershow-trucks from Lobo [www.lobo.de] - they're really cool!
Re:Pictures? (Score:2, Informative)
Re:Pictures? (Score:2)
Re:Pictures? (Score:2)
Re:Pictures? (Score:2, Offtopic)
Autoredirect after 10 seconds.
wow, only 62 calls at once? (Score:5, Interesting)
Anonymous Coward
Re:wow, only 62 calls at once? (Score:4, Insightful)
Re:wow, only 62 calls at once? (Score:2)
62 calls at once is due to the fact that there is only so much space in the radio spectrum.
Remember kids, wireless communication is NOT unlimited. That's why we have the FCC. ;)
Re:wow, only 62 calls at once? (Score:2)
or if one cell is a big one(has to cover a lot of area, in a city that's just asking for problems though but then again i hear the cell service in usa isn't quite top notch), then it would make sense to have a noticiable tower of it's own.
anyways, they do sell cell equipment that's disquised as chimneys & etc.
come to think of it, I can't seem to recall a single occasion on which I
Re:wow, only 62 calls at once? (Score:2)
Re:wow, only 62 calls at once? (Score:2)
it's a stupid overused excuse for getting crappy service.
Re:wow, only 62 calls at once? (Score:2, Funny)
They're known as COLT45s!
*Ba-dop*
Thank you! I'll be here in Vegas until the 14th. Try the veal.
Re:wow, only 62 calls at once? (Score:5, Informative)
Sectorization refers to the practice, common with all cellular technologies, of dividing up the area around a cell site into regions, or sectors, each served by its own set of directional antennas. Three sector cells are extremely common; that's why so many towers have triangular platforms with a set of antennas on each side. There are usually three antennas on each side: one for transmit and two for receive, with the extra receive antenna providing spatial diversity.
Most CDMA cell sites in built-up areas have three (or six) sectors, operate on more than one 1.25 MHz RF channel, and use the newer CDMA 2000 1x standard. That can easily provide a total cell capacity of considerably more than 61 calls.
CDMA 2000 1x doubles the number of Walsh code channels (to 128) by adding a second set of traffic channels in quadrature to the original 64. Virtually all CDMA phones sold over the past few years do 1x.
Because of CDMA's inherent robustness, the same RF channel can be reused in adjacent cells and even adjacent sectors, greatly increasing the overall capacity of the spectrum in a given area. Because no careful frequency reuse plan is required, CDMA is also very well suited to the rapid deployment of cells in "hot spots" as described in this article.
Disclaimer: I work for Qualcomm.
Re:wow, only 62 calls at once? (Score:5, Funny)
I come here for uninformed and incomplete comments from college freshmen who think that they know everything about cell phones because they know how to operate the features on a phone. I don't want someone who understands telecommunications. I would prefer someone who know how to program. Because being able to program a PC is basically the same thing as telecommunications. So why don't you just take your "facts" and "knowledge" and just go home.
Re:wow, only 62 calls at once? (Score:2)
Re:wow, only 62 calls at once? (Score:2)
There are usually three antennas on each side: one for transmit and two for receive, with the extra receive antenna providing spatial diversity.
I had been under the impression that these were a phased array, enabling the antenna to be pointed in any direction for transmit. The phase relationship of the antennas on transmit would mirror the phase relationship of the received signal, thus focusing the signal in the direction of the handset. Such focusing would be signal-specific, enabling the antenna to
Re:wow, only 62 calls at once? (Score:2)
It's not a true phased array because the two signals are indep
Re:MOD PARENT UP (Score:3, Informative)
The other traffic channels are still available for soft and softer handoff. That's when two or more cells (or sectors within a cell) carry a single call simultaneously. The mobile combines
Re:wow, only 62 calls at once? (Score:2)
Anybody know what the corresponding number is for typical GSM towers? I mean, with the University of Oslo campus, where there are like 30000 people, there's just a handful of antennas, and I'm willing to bet there are many hundred calls at peaks
Re:wow, only 62 calls at once? (Score:3, Informative)
Chargers (Score:3, Funny)
COWs? (Score:5, Funny)
Re:COWs? (Score:2)
Traffic (Score:3, Interesting)
Re:Traffic (Score:5, Funny)
So... (Score:2, Interesting)
If they were really for "disaster relief" and not "public image relief" these mobile towers would be system-neutral.
Actually, I think it highlights a bigger problem - if the companies worked together with standards that were compatible, mobile phone coverage would be much better and busy networks would be much less of a problem.
Re:So... (Score:5, Interesting)
Re:So... (Score:2)
Re:So... (Score:2)
As for working towards a standard and busy networks... thats what signaling standards ARE. Of the many companies out there, they all use one of the standard signaling specs. Sprint for instance, uses PCS, which is one reason a phone purchased for use on the Sprint network will only work on the sprint network (or r
Nextel (Score:3, Insightful)
Natural (or other) disaster (Score:5, Insightful)
Re:Natural (or other) disaster (Score:4, Interesting)
Unfortunately, none of these would have really helped on 9-11. The fact that huge swathes of Verizon's infrastructure were taken out by the towers collapsing meant that it wasn't just a lack of cell tower capacity. They would've needed dozens of microwave links to even BEGIN to handle the loss. COLTs and COWs are handy for "lesser" disasters (floods, ice storms, etc) where a permanent cell towers are either out of commission or overloaded but most of the basic telecom infrastructure is still functional.
Re:Natural (or other) disaster (Score:2)
Re:Natural (or other) disaster (Score:3, Informative)
Most towers are simply spokes hubbed back to the MSC. If that connection to the MSC is lost the cell is pretty much useless. If
Bad acronym (Score:4, Funny)
9-11 used something like this (Score:5, Interesting)
Llamas? (Score:5, Funny)
Did anyone else notice this? Llamas. And helicopters. Sounds elaborate. Makes me glad I'm not with Verizon.
Re:Llamas? (Score:2)
Which is why Ham ops are still useful (Score:5, Informative)
Which is a good reason that Ham radio ops are still useful, particularly in disaster relief scenarios where much of the local infrastructure may have been destroyed.
But first you have to get us to stop talking about the weather and our rigs.
Mobile Cell Phone Towers For Disaster Relief? (Score:4, Funny)
Those damn kids and their new technology!
ongoing emergency (Score:2)
Llamas On Topic (Score:2)
"In 2000
Llamas, Cows, and Colts, all in a post about deprecated cellphone tech. It brings a tear to my eye.
-theGreater Barnyard Activist.
News on parade... (Score:5, Funny)
(Queue trumpets)
Thanks to new advances in radio cullularology, our fearless fighting men in Europe can stay in touch with one another in the field and their commanding officers back at the base. This is accomplished by the US Army's Verizon Corps, who follow our troops across Europe erecting cellular phone towers at key battle sites. This gives our fighting men an advantage over the German oppressors, who are forced to rely on tin cans connected by string. So, when the US Army asks, "Can you hear me now?", America can proudly say, Yes We Can.
This has been News... On... Parade...
Why there's still a place for two way radio (Score:2)
Re:Why there's still a place for two way radio (Score:2)
Blimps (Score:5, Interesting)
You drive to site, inflate, and let her pop-up. Crank up your Honda generator and away you go. And now let the EEs shoot down my idea (not literally).
Re:Blimps (Score:4, Informative)
They probably won't [mbusinessdaily.com]
Re:Blimps (Score:2)
Re:Blimps (Score:2)
Also, just from the fact that you can call from a moving car I have to think that a stationary attenae is not all that important. Again, I am a compsci and not a EE so I am probably wrong.
Making Amature Radio Irrelevant? (Score:4, Insightful)
I rather wonder, aside from the hobby aspect, how much longer Amature Radio will remain relevant. Seems disasters where AR would really shine and this sort of thing seems to replace them, as now pretty much anyone can afford a hand held phone, where once transmitters and receivers were the domain of those who actually cared enough to outfit and train themselves to be available for when there was need. Now you just whip out a cell phone and dial 911.
Re:Making Amature Radio Irrelevant? (Score:3, Insightful)
Good question. For day-to-day 911 calls, yes cellphones are fantastic tools that have completely overwhelmed turf which Hams once had a unique claim to (2-way mobile comm). Natural disasters are still another story, however.
"Now you just whip out a cell phone and dial 911."
Now what happens when that cyclone roars through and tears your cell tower network to shreds. What do you do until an emergency cell network of limited capactity is rebuilt? Meaning transported to disaster area, properly placed and
Re:Making Amature Radio Irrelevant? (Score:3)
An amateur radio repeater ju
It's called Simplex (Score:2)
Enter amateur radio. Your typical handheld or mobile radio (which is not a toy like most cell phones are) are much more powerfull and usually have a greater bredth of configuration options. Thus, they can quickly be configured to throw together an emergency P2P network of operators, even in the absence of the normal local amateur repeate
Re:Making Amature Radio Irrelevant? (Score:2)
The problem with cell phones is they're only wireless for
Great news (Score:2)
dirigibles (Score:4, Insightful)
I mean, a couple of gyroscopes and some electric motors is all it would take to keep the thing approximately where it's supposed to be. They could carry batteries that recharge using solar cells during the day.
And then I thought, surely someone else has thought of this -- but I never hear anything about them, so maybe not.
Re:dirigibles (Score:2)
Re:dirigibles (Score:2)
Anyone that has and uses a gun that can reach to 50,000+ feet is probably going to be noticed.
Re:dirigibles (Score:2)
InfraLynx communications vehicle (pictures) (Score:3, Informative)
2600 took some pictures. they are here http://www.2600.com/offthehook/2003/1001files/ [2600.com]
another link:
http://iwce-mrt.com/ar/radio_infralynx_hummer_del
and the google page: http://www.google.com/search?hl=en&ie=UTF-8&q=inf
Private Cell Networks (Score:2)
Is it possible (read: feasible) to create a private cellphone network by running smaller cell sites and working alongside the existing national networks?
It seems to be quite hard to find out about exactly how the phone system works; it seems to me that a localised network in which phones are all able to call each other but not anyone outside the network could be useful in situations where currently two-way radio is generally used. It also seems like quite a fun project, assuming it's not prohibitively expe
Re:Private Cell Networks (Score:2)
Not really Disaster relief (Score:3, Interesting)
Loss of phone services in the situations the article describes is certainly inconvenient for the public, but hardly a disaster. Unless they were talking about the companies revenue.
I'd be more interested if they could find a way to set up fast communications networks when there has been an earthquake or such where good communications may really help rescue and reconstruction efforts.
But then in that situation you could certainly put more useful facilities on three trucks than a cell phone system.
Neato (Score:2)
Oh neat, they named it after my ex! Why do ya suppose they changed what the C stood for?
9/11 disaster (Score:2)
I can still remeber that awful day like it was yesterday. I'm sure anyone in the new york area can, unfortunately. I was going into work late that day. The first thing I did when I realized what was going on was to call my boss to see how everyone at the company was doin
Acronymns? (Score:2)
I'm half pissed after Portuagal beat Holland, and I can still remember IBM trying to call an air movement device an "Amd".
Most of us called an AMD a "fan", however IBM though it meant "Air Movement Device".
If course, DASD, (remember, I'm half pissed) is Direct Area Storage Device? Also called a disk?
Just because it's an acronym, doesn't mean it is easier to say or remember.
Now if I can just remember that my THC input device is also called a bong, i'll be very happy.
Verizon =! Verizon Wireless (Score:2)
Who cares about CDMA.. (Score:3, Interesting)
Used in Australia too (Score:3, Informative)
Unlike GSM, however, CDMA in Australia is (AFIAK) a Telstra-only service (Australia Telecom).
CDMA performs surprisingly well, almost matching the range of the old analogue AMPS towers we had circa 1999, and at a fraction of the cost (per base station).
Too bad the first (Qualcomm) phones they sold for it were crap - buggy firmware, expensive car kits
Re:Used in Australia too (Score:2)
Old News (Score:3, Informative)
Here in New Zealand we have had mobile cell sites at popular New Years holiday spots (to handle surge capacity) when the country goes on holiday for a week or two at Xmas/New Year. They have been doing this a couple of years at least.
Whata so special about this one?
so how about...... (Score:2)
Pictures + in Europe a normal thing.. (Score:4, Insightful)
There's no getting away from cell tech. (Score:2)
And virtually everybody goes along with it, deliberately avoiding all the questions too uncomfortable to ask.
I've sat in on government hearings and watched bullshit laws concerning cell tower placement policy rammed through by fat, red-faced balding nerd-boys living out political power fantasies, agreeing with everything said by smarmy lobbyists from the telecom
heh (Score:2)
Nothing new (Score:3, Interesting)
This is hardly new (Score:4, Interesting)
Because communication IS a good thing... (Score:5, Insightful)
Communication actually is the first service that is needed after a natural disaster. It just turns out that cellular service gives the best bang-for-buck in terms of communication capability.
Re:good idea [sarcasm] (Score:2)
you realize that when the hurricane came through NC and VA last year, the only form of communications available were Police radio, Rescue radio, Ham operators, and CELL PHONES.
Not just for the disaster workers. (Score:4, Insightful)
Floods? (Score:2)
Trigger Happy TV exerpt:
"(Nokia ring tone) HELLO! NO, I'M TRAPPED UNDER A BUILDING. WHAT. I WAS JUST CHEWING THROUGH MY LEG! WHAT? OK, HAVE A GREAT DAY TO YOU TOO!"
Re:Um... (Score:2, Insightful)
Re:Um... (Score:3, Insightful)
I digress... My point was, when a disaster strikes, you often have volunteers helping with the disaster relief. In our case, the volunteers were relying on cell phones for communications. Not everyone has access to police or res
Re:Um... (Score:2)
Re:Um... (Score:2)
Re:Um... (Score:3, Interesting)
So are they going to hand out radios to victims so they can be found?
Fire Chief on phone (Score:3, Informative)
-Radio communications that Fire Departments/Ambulances/Police use are usually one or two half duplex channel. If you are lucky, you have four or five channels, but only one or two will get you in touch with you dispatcher (911 center). During a natural disaster, hundreds of units across your county could be trying to reach the 911 center at the same time. The e
Re:But.. (Score:2)
Re:Patent 6,754,501 would help a lot. (Score:2)
Re:Other things they could do with these things (Score:2)
Re:How can they transmit the bits to their backbon (Score:2, Informative)
If the local terrestrial infrastructure is nonexistent, inadequate, or severely damaged, then the choice becomes microwaves. While the microwave relay stations are old tech, microwave relays are still used for many th
Re:FEMA has had this for years (Score:2)
There have been switches installed in semis for decades, and trailer-mounted cell sites for years. One of the unique bits about CDMA is that it's extremely timing-dependent, each s
Re:Cell On Wheels (Score:2)
Pretty sweet setup.