Cell Phones In The Air? 521
jumbledInTheHead writes "Are you ever annoyed when someone near you talks unnecessarily loud on their cell phone? Or even worse, when it is in a tight, enclosed space and you can't walk away? The problem is about to get worse the next time you take a flight; the FAA is considering removing the ban on cell phone use on airlines."
Is this really a big deal? (Score:4, Insightful)
'some wanker talking loudly to the person next to them'
'some wanker talking loudly to a person on the phone'
That's right - there is stuff all difference. People use phones (rudely sometimes), but so what! If they are a loud, rude person then they will be loud and rude no matter what technology you limit them to.
I hardly ever use my mobile, but on a plane I imagine it would be really useful (Hi Honey - I'll be in late, or booking rooms or whatever)
And anyway (Score:2)
Re:And anyway (Score:4, Informative)
Re:And anyway (Score:5, Informative)
> because you have a clear shot to a crap load of cells at the
> same time while you are up in the air.
This is the big problem. If they use the existing cellular infrastructure, this will greatly increase interference and make voice quality even worse than it is today for everybody.
For existing cell phone towers, any cell phone in the air will be likely above the antenna mid-line. Since most antennas have a down-tilt of around 3-degrees (so they point slightly towards the ground), any coverage above the mid-line will be from one of the normally minimized antenna nodes that point up.
Antenna manufacturers try to make these nodes small because it's just wasted energy. One would rather have that energy pointed to where the traffic is. So the cell phones that are in the air will have moderate to poor signal strength which will require the cell phone and the base station radio to transmit at their highest power settings. For the base station, that's not too bad, but for the cell phone, you're suddenly going to have this giant source of interference because the phone will be broadcasting at its full power setting from nearly two miles above the surface. Since voice quality is indirectly proportional to the level of the noise floor in an area, cell phones service will get even worse.
However, the article talks about how they'll mitigate this. Airlines will install very small, low power base stations called "Picocells" aboard the plane. Thus, the cell phone will communicate with this nearby base station, reducing power levels significantly and minimizing the interference effect.
However, this will do nothing to mitigate the annoyance of listening to the person next to you screaming on their cell phone because they can't hear their voice over the roar of the engine.
Re:And anyway (Score:3, Informative)
Antenna manufacturers try to make these nodes small because it's just wasted energy. One would rather have that energy pointed to where the traffic is. So the cell phones that are in the air will have moderate to poor signal strength which will require the cell phone and the base station radio to transmit at their highest power settings. For the base station, that's not too bad, but for the cell phone, you're suddenly going to have this giant source of interference because the phone will be broadcasting at
Re:And anyway (Score:3, Informative)
> totally without any line of sight component in a multipath
> envirinment (ie, a Rayleigh signal model).
> I haven't see a a Smith chart for a cell tower antenna in a
> while, but while the main lobe is basically horizontal, there
> will be a side lobe pointing up.
You're correct in that multi-path governs cellular communications, particularly for spread spectrum systems like IS-95 CDMA. However, wouldn't the fact that the d
Re:And anyway (Score:4, Informative)
You're correct in that multi-path governs cellular communications, particularly for spread spectrum systems like IS-95 CDMA. However, wouldn't the fact that the device is flying above the skyline with no objects for the signal to bounce off of minimize multi-path effects? It's almost free air space with no obstructions when you're pointed at an airplane.
The only real way to be sure is to take field measurements, but I am pretty sure that this would be a Rician model (line of sight with multipath) with a fairly big Doppler shift. My reasoning is that since the mainlobe of the antenna is horizontal or pointing downward, it will pick up building and ground reflections. Since they are doing picocell and retransmitting, then can precompensate for the Doppler, though, by measurements on pilot channel. This topic has come up several times on comp.dsp. The general consensus was that the LOS component really helps things more than you think.
Re:And anyway (Score:2)
(Sitting here thinking about the _Far Side_ cartoon showing a switch on one passenger's armrest: "Wings Stay On/Wings Fall Off")
7 miles up! Aircraft will need repeaters (Score:3, Informative)
Re:7 miles up! Aircraft will need repeaters (Score:3, Informative)
Those who say its easy to use a cell phone on a plane have obviously never tried it.
Re:And anyway (Score:3, Informative)
This will have the additional safety benefit that the signal from the phones doesn't have to be at full power, since the distance to the link is only ten or so meters instead of over 10km at cruising altitude and so the chance
Re:Is this really a big deal? (Score:3, Funny)
Re:Is this really a big deal? (Score:3, Funny)
Re:Is this really a big deal? (Score:3, Funny)
When you shout, the electrons that travel are bigger and fatter. Also, when you SHOUT, PEOPLE ARE ABLE TO UNDERSTAND YOU!.
WAAAAH!
Re:Is this really a big deal? (Score:5, Interesting)
Re:Is this really a big deal? (Score:2)
Have you ever had the urge to turn down the volume of your phone when talking to someone you don't like and making them shout?
*I* haven't done this, but it makes for good times I bet.
-Adam
The difference (Score:5, Interesting)
They only have two people next to them on the plane to talk to, and if they are talking loudly, that's going to stop pretty quickly.
With a cell phone, they can talk loudly to anyone they can reach by phone.
So instead of maybe an hour before their seatmate gives them a hint that maybe it is time to shut up, they can conduct "business" in a loud voice for 8 hours straight (or as long as their battery lasts).
Long-distance air travel is already annoying enough, this is going to crank it up a notch!
Re:The difference (Score:2, Insightful)
Re:Is this really a big deal? (Score:5, Interesting)
I hardly ever use my mobile, but on a plane I imagine it would be really useful (Hi Honey - I'll be in late, or booking rooms or whatever)
True: I use mine regularly to advise my wife of my train time---by text message, not by talking.
Re:Is this really a big deal? (Score:2)
Re:Is this really a big deal? (Score:2)
Re:Is this really a big deal? (Score:2, Funny)
Re:Is this really a big deal? (Score:2)
That's why God made headphones. They're pretty clear way to say "Do not Disturb."
Re:Is this really a big deal? (Score:5, Interesting)
See http://news.bbc.co.uk/1/hi/technology/3643477.stm [bbc.co.uk] for details.
Basically, people get more annoyed when they can only hear one side of the conversation.
Manta
Re:Is this really a big deal? (Score:5, Insightful)
It can be handy.
Re:Is this really a big deal? (Score:2, Insightful)
Re:Is this really a big deal? (Score:2)
Well I don't know that much about GSM or RF, but maybe it's because the plane isn't moving faster than 220km/h relative to the GSM base station, due to the huge altitude..
Re:Is this really a big deal? (Score:2)
I strongly suggest you take some math and physics courses. That's like claiming a boat traveling 30 knots is not traveling over the ocean floor at that same speed. It makes absolutely no sense.
Re:Is this really a big deal? (Score:4, Funny)
Re:Is this really a big deal? (Score:2)
Even if his phone couldn't hold a call when hopping cells at that speed, the text messaging probably would have been more reliable since it just needs to do a
Re:Is this really a big deal? (Score:3, Insightful)
It's a technical issue (Score:2)
The is a difference... (Score:2)
Consider:
the Japanese sorted this out ages ago (Score:4, Interesting)
it works because everyone respects not being an ass to others... whether or not this would work on airplanes is another matter, but the idea of a mobiles section in the same sense as smoking sections would be a step in the right direction
Re:the Japanese sorted this out ages ago (Score:3, Insightful)
Whether it would work anywhere but Japan is another matter. It works in Japan because people there actually care about what random strangers think of them. Shame is not nearly as strong a motivating factor in most other cultures. (Which in this case is too bad.)
I would almost go the opposite direction: instead of telling the noisy people to go to a particular part of the plane,
Re:Is this really a big deal? (Score:2)
Yes, it's a huge deal! (Score:2)
I'm sorry, but in my opinion, no one who flies on a commercial flight is that important to need constant cell phone connectivity. Get over it, and unplug for a while. Your life, and the lives of others will be better off for
Why are we even questioning this? (Score:3, Informative)
Example: Excuse me sir, if you keep up the loud obnoxious cellphone talking, we'll be forced to tazer you and sit you between the three body odor offenders in row F.
The FAA should only be concerned if there's a valid problem with equipment interferrance
Re:Is this really a big deal? (Score:2)
Even if one can tune out a person's conversation, it's very difficult to tune out the tones, beeps, etc of most cellphones - some are likely well in excess of 100db in loudness; perhaps not, but they sure seem that way.
Ron Bennett
Re:Is this really a big deal? (Score:5, Insightful)
Re:Is this really a big deal? (Score:2)
Re:Is this really a big deal? (Score:2)
Re:Is this really a big deal? (Score:2)
The conversations in foriegn languages always sound so much more sinister.
...und keine Eier!
Re:Is this really a big deal? (Score:2)
Re:Is this really a big deal? (Score:3, Informative)
So many laws could be saved if it wern't for jerks (Score:5, Insightful)
Law proponents are worse (Score:3, Insightful)
People who enact laws are forcing you to act the way they want or they'll put you in prison. In other words, they're a dangerous threat to you.
Re:So many laws could be saved if it wern't for je (Score:2)
Being in NY (Rochester) myself, I can say that nobody seems to care - I can't remember the last day I didn't see at least 2 people talking on their phones and driving. Not to mention all the times i've almost been sideswiped or t-boned by an obviously distracted person that I couldn't see clearly befor
Re:So many laws could be saved if it wern't for je (Score:3, Insightful)
In other news... (Score:4, Funny)
Brutal punch-to-the-head incidents are expected to rise eleventy kajillion* percent.
* Margin of error +/- three kajillion.
Compromise (Score:3, Interesting)
True, but... (Score:2)
Divide up the seats into a cell phone and non-cell phone section. Kind of like a non-smoking and smoking section they have in restaurants.
True, but as there tends to be some smoke drifting into the non-smoking section there would likely be some noise spilling into the non-phone section. If there were a bulkhead between the two sections (with a heavy curtain over the doorway) this could work.
Re:True, but... (Score:2)
Re:True, but... (Score:2)
Kind of like how they separate first class from the rest?
Something like that, but the curtain would need to be heavier to dampen the sound. Unfortunately, on the last several trips I noticed that the flight attendants did not close the curtain [between coach and first class]. Forgetful? Intentional? Another half-baked security measure? I don't know.
Actually a door between phone and non-phone would be even better, but I don't think that will fly (so to speak).
Re:Compromise (Score:2)
They have that. It's called "the engine"
Re:Compromise (Score:2)
Specialized earplugs? (Score:3, Interesting)
I already wear earplugs on the train: they block the noise from the train itself quite effectively but don't muffle voices as effectively as I'd like. (I think they are designed to attenuate low frequencies.)
Has anyone seen earplugs designed specifically to block human voices as well as low-frequency noise?
No problem... (Score:5, Funny)
Not for money i hope? (Score:2)
Re:Not for money i hope? (Score:2)
Technology allows... (Score:2)
Re: (Score:2)
Air Rage (Score:2)
Gizmodo Has a Solution! (Score:2)
Given what an addiction handys are here in Austria, I'm really thinking of making some auf Deutsch.
flight mode on SE Px00 (Score:2)
I don't know how these function, but... (Score:2)
It would be extremely cool to make one and put it on your back pack!
Fight Back: Join the Society for HandHeld Hushing (Score:3, Funny)
"Dear Cell Phone User, we are aware that your ongoing conversation with [ ] yer mother [ ] yer therapist
I have aleady printed my bunch of cards and started handing them out. Reactions are quite positive.
Phone software problems (Score:2)
Of course, maybe cell tech can be fitted into the plane and transmitted some other way.
A few points (Score:3, Interesting)
Secondly, I'm surprised that the FAA and/or FCC is still concerned about the planes. I can't remember the last time I went on a flight and didn't hear a phone accidentally ring in flight. Oops. Forgot to shut off your cell phone. Yet despite most flights having at least some passengers who leave their cell phones on, it hasn't caused any problems. If it were an actual issue, it would be pervasive.
And finally, a huge number of people bring on laptops and although they might not be actively attached to a wireless connection, the computers are still sitting there probing the airwaves looking for connection points. Again, no problem there despite the fact that wireless computer technology is present and active on most flights.
-S
Re:A few points (Score:4, Interesting)
Or, they'll just speak a lot louder because of the noise...
I can't remember the last time I went on a flight and didn't hear a phone accidentally ring in flight
I suspect there's a big difference between a brief transmission while it rings and a dozen people yapping away for the entire flight.
And finally, a huge number of people bring on laptops and although they might not be actively attached to a wireless connection, the computers are still sitting there probing the airwaves looking for connection points
1. The laptop doesn't actually need to actively probe for networks, it can just listen for an access point broadcasting it's BSSID (unless it's trying to find an ad-hoc network).
2. 802.11 will usually be transmitting at under 100mW (probably 35mW actually on most hardware), a GSM phone will transmit at up to about 4W.
Cell Phones Don't Work on Airplanes (Score:4, Informative)
As a private pilot, I always leave my cell phone on when I fly VFR. (So far I haven't flown into any mountains due to navigational system confusion.)
The only way that I can get my phone to work is to descend very low in a rural area. If I'm up more than about 2000' AGL, then the phone doesn't work. I figure that it gets confused because it probably sees a dozen towers with strong signals.
Commercial aircraft would probably have to install special equipment to receive the signal inside of the airplane and then connect to the phone network directly.
Re:Cell Phones Don't Work on Airplanes (Score:2)
Re:Cell Phones Don't Work on Airplanes (Score:3, Interesting)
Last time I was on a plane the guy behind me was on the cell phone talking from take off to mid flight.. despite the cell phone ban. Maybe because he was already conneted to a call the phone had an easier time, or maybe your phone just sucks and can't handle flying, not sure what the case is, but people have use
Depends on phone type (Score:3, Informative)
1. Verizon CDMA-800 kinda works when the plane's still low, and you might get a signal at cruse altitude every now and then. That phone also had analog roaming, and it picked up analog signal sometimes.
2. TDMA works quite well.
3. GSM-1800 doesn't work AT ALL.
BTW, if any of you don't understand how come the FAA worries about something as insignificant
unsubscribed at yahoo. (Score:2)
Roaming Costs (Score:2)
Rus
They should also allow laptops (Score:2)
Cell phones are also banned during the full flight because it was thought that phones traveling across the landscape at 300-500mph would cause problems in the cell switching system, which expected that phones would stay within each cell for a longer period.
This is massively good. (Score:2)
Now there can be an end to the airline's monopoly on in-flight Internet access. Gives us geeks something to do while sitting for hours on a plain.
Background noise (Score:2)
I for one would love to have my cell phone (and accompanying data service) working on the place. Would love to e-mail and whatnot while in the air.
Even if someone else is talking loudly on their cell phone, unless if they are right next to you, you probably won't be able to hear much of it and you should be watching the movie anyway.....
-m
Hell cellphoneuser - my card.... (Score:2)
At least it'll make you feel a little better.
Handouts (Score:3, Funny)
Go ahead, you know you want to, too.
What is it.... (Score:5, Insightful)
1. Headphones man....put em on when you get to flight level and crank away my friend!
2. Just ignore it. Get into something like a good book and you can block out most anything.
3. Relax! It's ok dude! That person talking on thier cell phone is exercising their rights. You can't legistlate the rights of people to be idiots. People are going to be idiots whether they have their cell in their ear or not.
Now, here's a list of cell phone usage rules for the idiots:
1. Vibrate man.....put it on vibrate on the plane, in the theater or in a restaurant. If it's a quick call, take it. If it's going to get extended, head for the restroom and finish it up in there.
2. USE YOUR INSIDE VOICE! If your in a bad cell, hang up, call later.
3. If it's on audio ring, silence it quickly. No reason to hear more then the opening bar or two of music.
4. If you simply need to make that call, then wait til you get to a private location. Don't make extended chattering calls in public. If it's simple hey we're running late calls, go ahead and make it or take it. If you feel the need for a cell convo to take your whole plane ride, don't. As you can see from the posts hear on slashdot, it annoys people.
Lastly for everyone, TAKE A FRICKIN CHILL PILL! People are idiots with or with out cellphones, cars, bicycles, walkmans, bass thumpers, iPods, laptops....etc, etc....they will continue to be idiots when you take their toys away (in fact they willl be worse because now you have to listen to them whine about it).
Re:What is it.... (Score:5, Funny)
Comment removed (Score:4, Funny)
Audio spam (Score:3, Insightful)
It's no coincidence that the most common [nydailynews.com] "quality of life" complaint is about noise from your neighbors.
So, for all those people who are saying "just chill out, relax, tune it out", you should realize that this is pretty much the same response that spammers give when they are criticized for sending out thousands of useless messages to people who aren't remotely interested in what they have to sell. Saying "oh just chill out and don't listen to it" and "oh, just hit delete and relax" is pretty much the same thing. The key is to realize that even if you personally don't find it annoying, MANY other people do.
I think that with all the loud background noise on planes, this would mean that people would talk even more loudly than normal on a cellphone. And, in my experience, there is always someone who seems totally oblivious to the loudness of their own phone voice. They are totally focused on their conversation, and simply don't care about the people around them. Or, perhaps they actually believe that other people are interested in what they are saying - I certainly think that this is the case sometimes. I have heard cellphone users talking loudly about stuff that seems purposely designed to be heard by the passers by, particularly when it pertains to something "cool" that the person did, e.g. a sexual conquest, or when the person is trying to be "wise" and demonstrate to everyone around them what a great person they are. There's something about having an audience that makes people behave a little differently. In a twisted way, they believe everyone else will be interested in what they have to say, just like those people who believe that everyone in the vicinity simply *MUST* love the song that's playing on their music system (of course, they totally forget that treble doesn't travel so well, so other people mostly just hear the thudding "dmpha dmpha dmpha" of the bass, like a bad headache), or the guys who drive around very aggressively with screeching tires for no apparent reason ("ooooohhhh, he must be *such* a great driver" is what is going through their little heads, methinks)...
I believe that if cellphones became formally permissable on planes then we are going to see an increase in "air rage" incidents because of the closed space and already somewhat tense environment. People are already primed to be annoyed by the time they step on the plane, what with all the parking hassles, lines, delays, security checks and other impediments to their getting from A to B. We certainly don't need to finally settle down into that airplane seat, only to realize that the asshat behind us wants to talk to Lenny in marketing about the latest sales figures. When that happens in the terminal, I simply get up and walk away. On a plane, not really an option.
Just my opinion...
The Relative Peace and Quiet of Flight (Score:3, Insightful)
Now the announcement from the crew will be "please put your phones on vibrate out of respect for your fellow passengers," and that will be largely ignored along with something about oxygen masks and floatation devices.
I'm all in favor of dumb rules going away and freedom to use my phone when I really need to, but I really believe that I will miss the relative peace that came with knowing that nobody had a phone and there was nothing we could do about it.
On another topic, I thought I heard that cell phone towers only have a range of a mile or two. So how is it that we expect to be able to use our cell phones at 30,000 feet (5.6 miles)? Just wondering.
RP
FAA? What about the FCC? (Score:4, Informative)
Cell phones work by assigning a particular set of frequencies to a particular geographic area, and then reusing those frequencies further away where there is no chance for interference (phones that use spread spectrum work more or less the same way, only the frequency separation is more dynamic). When you take a phone operating within such an arrangement and suddenly raise its altitude a few thousand feet, it can suddenly be present in many, many cells. This causes interference in every cell where the phone is not actually communicating with that cell's tower.
I have heard of plans to put micro-cells aboard planes. Such micro-cells would instruct the phones to use low enough power that this wouldn't happen. THAT is a much different scenario, but I wonder how many different modulation types (and therefore customer populations) will be able to be handled by such a scheme. Those who aren't covered by a cell in the plane should not be using their phones for the technical reasons described above.
As for whether people can talk on a phone or not, I fail to see the distinction between talking on a phone and talking to a person next to you. I've seen drivers distracted by their fellow passengers with equal frequency to drivers distracted on a phone. I've seen loud, obnoxious boors talking way too loud to people 3 feet away with equal frequency to the same boors shouting into a phone. What's the difference? Rudeness is the same whether technology is involved or not.
Here's a Crazy Thought: Communicate (Score:5, Informative)
Re:Problem solved. (Score:2)
Re:Problem solved. (Score:2)
Me too.
*gets slimjim and sledge hammer to deal with that pesky jammer*
Re:Problem solved. (Score:2)
It's jackass ideas like yours that contribute to accidents. And of course, getting into an accident is now worse. I can imagine alre
Re:No, you don't. (Score:3, Interesting)
Seriously, if you're so intolerant of every aspect of the rest of society then perhaps you should fly first class, fly by private charter, or not fly at all. (And that's a general "you", not JNighthawk in particular.)
Frankly, this whole "loud conversation" stuff reminds me of that universal off button story a few months back. If something bothers y
Re:No, you don't. (Score:2)
It's called Duck Tape... or sticking them in the hold luggage...
Re:What about... (Score:2)
Re: (Score:2)
Re:My solution is... (Score:2)
I'm amazed at how many people whine and complain about smokers when it's outdoors in a well-ventilated area. The college campus I work at has gone as far as posting "NO SMOKING" signs in some OUTDOOR areas!
Come on; if you're outdoors, you should be able to smoke. Occasional whiffs of second
Re:Ever see Triggerhappy TV (Score:2)
Re:Ever see Triggerhappy TV (Score:2)
(Slashdot said: "Don't use so many caps. It's like YELLING." Well, duh!)
Re:meh (Score:2)
Actually, they don't cancel all noise - they cancel the consistent rumble from engines, but voice comes through pretty well, considering you're wearing headphones.
If you want noise isolation, go with in ear headphones such as Shure's E2/3/5 series or plain old ear plugs.
Re:Why people talk so loudly on cell phones... (Score:3, Insightful)