Database Users

Relation between GPS and Wifi

Is there any relationship between Wifi and GPS ???

any suggestions??

abdelrahim said:
Is there any relationship between Wifi and GPS ???
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I am not quite sure what you are looking for, but the short answer is "no". Wifi is a short range wireless access method, typically 802.11g or 802.11b used to connect devices to the internet. See http://en.wikipedia.org/wiki/Wi-Fi
GPS is "Global Positioning System", a series of 24 or so satellites in orbit above the earth that provide precise timing signals that can be used to locate a received within a few meters. See http://en.wikipedia.org/wiki/Global_Positioning_System for details.
There are some applications that use the IP address of a WiFi signal to provide rather coarse location information.
Regards,
Bob Headrick

bobh said:
I am not quite sure what you are looking for, but the short answer is "no". Wifi is a short range wireless access method, typically 802.11g or 802.11b used to connect devices to the internet. See http://en.wikipedia.org/wiki/Wi-Fi
GPS is "Global Positioning System", a series of 24 or so satellites in orbit above the earth that provide precise timing signals that can be used to locate a received within a few meters. See http://en.wikipedia.org/wiki/Global_Positioning_System for details.
There are some applications that use the IP address of a WiFi signal to provide rather coarse location information.
Regards,
Bob Headrick
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Thanks for reply ....I was wondering whether A wrong GPS settings may affect Wifi CONNECTIONS as both GPS and Wifi use someform of data connections.......

You are talking about GPRS, not GPS!!!!!!!!!!
The GPRS and WiFi are on completely different frequencies.
NO, GPRS settings wouldn't effect WiFi.
However I think what you might really mean is modem settings and yes, if you don't configure the modem correctly then both WiFi and GPRS data wouldn't give you internet.

ditikh said:
You are talking about GPRS, not GPS!!!!!!!!!!
The GPRS and WiFi are on completely different frequencies.
NO, GPRS settings wouldn't effect WiFi.
However I think what you might really mean is modem settings and yes, if you don't configure the modem correctly then both WiFi and GPRS data wouldn't give you internet.
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Thanks alot ....but I still mean GPS but NOT GPRS.....WHAT I am looking for is would faulty GPS SETTING LIKE PROGRAM PORT OR HARDWARE PORT AFFECT WIFI CONNECTIONS???

gps dont send anything it's a passive reciever which listen to the satelites it dont send anything back or to anywhere

Rudegar said:
gps dont send anything it's a passive reciever which listen to the satelites it dont send anything back or to anywhere
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Thanks alot .....

That's right, and on an airplane, the stewardesses will make you turn off a passive GPS receiver, but PDAs, PCs, phones, and some mp3 players are on generating bluetooth and WiFi signals all over the place.
Ignorance of technology... where a basic understanding should be in order.

I don't notice any difference between gprs and wifi,you can use both to go on the net,i don't bother using wifi .(risks being a butthead)

Would it be possible to modify/rig a gps antenna to boost the recieved wifi signal?

No. Completely different frequencies and totally different antenna. aGPS does speed up your gps precition though becouse it uses the mobile phone poles to calculate your location in the same way your phone would use the satellites, except much faster because it's closer and in better range. So... Phone towers can help locating you (but still doesn't help GPS) and GPS can't help WiFi or mobile connection because of different frequencies and thus different antennas.
Sent from my LG-D855 using Tapatalk

Many problems with my GPS but never with Wifi.
Anyway, these two are totally different.

Sometimes Navigation Apps will prompt you to enable Wifi to lock in to your current location faster. It is understandable to enable it. Turning off Wifi will not hold GPS capabilities down. at all

Wifi sucks on touch HD

When I first bought the touch HD I was thinking how good it would be to have this phone while having wifi with the lack of 3g for tmobile in the us, but it turns out that the wifi acutally suck! I have a iPod touch 2g And the wifi works great with blazing speed. I can't seem to detect my wifi at home mean while I'm connected on my wifi with my iPod. I been very disappoint with this phone for simple fact that this phone recieves wifi poorly. Anyone can help me out with this problem would be much appreciated because despite the wifi problem I love the phone cause the 3.8 screen is so damn sexual lol.

I've no such issues!
Try to set wifi power options to performance. Also, Enabling G Mode (with SKTools is one of the ways) helps improve speed.

Thanks for the info but it might be the lack of range of my router cause I have been on my wifi with the phone before but I get disconnected frequently and most the time it doesn't even show up or detect it but I don't have that problem with the iPod. With iPod I seem to get wifi everywhere. I'm starting to believe the iPod is better might sell it and get a iPhone or maybe a hero but don't know if I'm willing to spend 600+ on another phone

Next time put [rant] on the title

My wifi connects well to open, WEP, and WPA connections. I tried numerous access points (at least 30), even 802.11n APs in mixed g mode. It even connects to Apple Airport (802.11g). The connection is stable both on power saving and best performance, but I think I get much better speeds on average with best performance.
Its wifi range is much better than my little HP 613 smartphone, but again worse than my notebook. I get 54Mbit connection with signal quality of about 50% at 10 meters through a wall and then it automatically finds another channel on another AP. It roams (handover) APs better than some Lenovo r61 laptops around!
But I am not satisfied with its speed (even on best performance) - it finishes copying a 700MB file on a 54 Mbit connection in 30-40 minutes using total commander and saving on storage card. That means average speed is around 300-400KB/s - laptop does the same (same AP, same file, same network settings) at 1.6-1.8 MB/s in around 7 minutes.
I also noticed that saving on storage card is slighty faster than into the main memory...

I can't seem to detect my wifi at home mean while I'm connected on my wifi with my iPod.
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Hmm, are you sure that you don't compare two different situations ? Did you also try connecting to Wifi with your iPod while already being connected with your Blackstone ?
My personal experience shows me that the Touch HD seems to have a better radio than the iPhone 3G. Have you upgraded to the latest Blackstone stock ROM and radio available on the HTC website or XDA Devs ? Whether or not the radio also affects Wifi unfortunately I don't know.
Moreover, use WifiMonster to monitor the strength of the signal, it'll help you discover the best spots for using Wifi. I even receive Wifi signals from the neighbors' houses in my own house (not speaking about appartments), of course that always depends on the room !
BTW I'm pretty sure that a Hero won't solve your problem, it's the same old hardware specs as on the Blackstone.

The Wifi on my device works perfectly and i have had no issues at all with signal or quality. I have had more problems with my ipod than the HTC, are you sure its not the WIFI AP you are trying to connect to? Also are you using stock rom or custom?

I'm using the Energy ROM. I'm assume its my wifi signal its very weak and my touch hd cant seem to detect it. With my ipod i shows up and i can connect to it...will updating the radio make a difference?

I came across a startling discovery the other day regarding the Touch HD wifi. I was also having issues at home with weak wifi signal. I didn’t seem to have this problem with public access hot spots.
I have a Logitech wireless mouse connected to my computer and very rarely turn that computer off. I found that when my computer was off I would get a rock solid connection to my home wifi, but when the computer was on it would drop in and out. I narrowed it down to the wireless mouse was interfering with the Touch HD wifi connection.
I tried all different channels on my router, but as long as the Logitech mouse was plugged it I would get wifi dropouts. But as soon as I unplugged the mouse and the radio dongle, I wouldn’t have any problems with the Touch HD wifi.
I can’t comment if this is your issue, but something might be interfering in the 2.4Ghz with wifi.

Guys,
Sometimes even cordless phones, microwaves, etc will interfere with the connection.
Cheers.

As Poison Wolf correctly pointed out, other household items can interfere with the wireless frequency. Try changing the channel that's being used to transmit from your box (This will involve changing some settings on your wireless router so do some research before you fiddle around with it) I have had to do this before and can confirm it can make a massive difference.

ikovac said:
But I am not satisfied with its speed (even on best performance) - it finishes copying a 700MB file on a 54 Mbit connection in 30-40 minutes using total commander and saving on storage card. That means average speed is around 300-400KB/s - laptop does the same (same AP, same file, same network settings) at 1.6-1.8 MB/s in around 7 minutes.
I also noticed that saving on storage card is slighty faster than into the main memory...
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Everybody has this problem because the card seems not capable of more speed.
But it seems nearly nobody cares.
My old thread about his, no answers:
http://forum.xda-developers.com/showthread.php?t=524272

str0nz0 said:
Everybody has this problem because the card seems not capable of more speed.
But it seems nearly nobody cares.
My old thread about his, no answers:
http://forum.xda-developers.com/showthread.php?t=524272
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Stron,
Hmm, interesting. The only reasoning I can think of is that perhaps there's a limiting factor in order to reduce the heat or something? I don't see why they would cap the speeds.
Cheers.

What if it is capable of connecting at 54 Mbit, but can actually do only 11 Mbit? Nice trick. I hope it is just a bad idea.

[Q] Painfully slow WiFi speeds, anyone else?

Hi there, I got a Magic (32A) with FroyoRedux, SPL 1.33.0010 and Radio 3.22.20.17. Everything works perfect, except for one thing: the WiFi speed. At july, I was visiting my parents in other city, I also updated my ROM while I was there. At my parents' house, with WiFi connected to a 8mbps internet connection, I got full speed (tested using speedtest.net app). About 3 or 4 weeks ago, when I got home, also via speedtest.net app, I got a fair speed (3mbps) via WiFi. I have 15mbps at home, but I though it was OK, since its fast enough for most applications I use. But, since then, my WiFi speed is limited to a extremely slow rate, always slower than my 3G speed. I have 600kbps at 3G, and I get, in the best results, 500kbps via WiFi (most of the times, it gets between 100 and 200kbps), even without any other device connected to my router. I tried using static IP, no success (actually, I was unable to connect while using static IP, even with all the settings done correctly). Using an app called WiFi analyzer, I can see that no network next to my house is using the same channel as my router does, so channel interference is also not the problem. I know a setting in HTC WinMo devices which let the user to choose between better wifi performance or better battery life, but I was unable to find such settings in Android.
So, I'd like to know if it is a known issue, or if someone out there has the same problems as me. I've seen many Droid and Hero owners having similar issues, but nobody with a Magic.
And sorry for any typos I may have commited, my english is not that good, I'm brazilian

Will 5ghz help me?

I recently got a galaxy tab and thought it would make a great interface for playing music at home.
Most of my music is on my PC and i manage to access it via cifs and it plays fine over WiFI.
I also have a home cinema system that will accept music via bluetooth, so If i have music stored on the tablet it comes out the home cinema speakers great.
Now my problem is that when I use the tablet to play music via the WiFI and bluetooth simultaniously it cuts out and stutters.
Futher reading shows that bluetooth operates over similar frequency range 2.4ghz as wifi. But unlike wifi it has no channel but hops over all channels all the time. so it not possible to select different channels to avoid the interfearance. This I think is my problem.
The Tablet does have the option for 5ghz but sadly my N router is only 2.4 and not dual channel, so i was wondering if anyone has experiance of this or thinks that moving to a dual band router will benefit me?
Thanks

Grab "wifi analyzer" from the market and post back your signal strength in dbm where the connection drops out.
I personally had a wall in my house that seriously impaired the wireless signal so I purchased 2 homeplugs, I guess you're in the states so
http://www.google.com/products/cata...X&ei=DhPiTsHsI4SE8gOB_b2HBA&ved=0CIoBEPMCMAE#
Then a cheap access point where you want the boosted signal
http://www.google.com/products/cata...X&ei=VRPiTsDXJNGm8gPIhaWDBA&ved=0CKsBEPMCMAM#

Wifi analyser show the signa almost at max (-40bd) though it does drop down when the music cuts out (down to -50 which is still in the green band)
I tried moving the router / sound system and tablet into the same room to eliminate signal loss due to obstructions like walls but still the problem persists.
I think either the chipset in the Galaxy tablet cannot cope with the bandwidth requirement of recieving a music stream via wifi and simultaiously outputing it via bluetooth or that the wifi and bluetooth are interfering with eachother.
Any ideas how i could determin if either of these is the cause?
thanks
rumple

With that sort of signal it does seem rather strange, a new router almost certainly wouldn't sort that out at that signal level.
Music streams usually have very low bandwidth requirements like KB/s
I would say the issue is quite probably on the bluetooth side of it.
Perhaps try changing the channel of the wireless in your router, beyond that... maybe someone else has an opinion

Bluetooth operates on a different frequency it wouldn't be interfering with the wifi signal especially on a 5ghz spectrum.
Sent from my Touchpad using xda premium

Wikipedia
Bluetooth uses a radio technology called frequency-hopping spread spectrum, which chops up the data being sent and transmits chunks of it on up to 79 bands (1 MHz each; centered from 2402 to 2480 MHz) in the range 2,400-2,483.5 MHz (allowing for guard bands). This range is in the globally unlicensed Industrial, Scientific and Medical (ISM) 2.4 GHz short-range radio frequency band.
And he's using 2.4ghz Wifi
Unlikely that is the problem but worth ruling out no?

I don't think its the amount of bandwidth from the music, I tried running even irc on wifi then using Bluetooth keyboard and it cuts out wifi, however on cell data it works fine. Also I have a dual band router and got the same effect
Sent from my SAMSUNG-SGH-I777

Nizda1 said:
I don't think its the amount of bandwidth from the music, I tried running even irc on wifi then using Bluetooth keyboard and it cuts out wifi, however on cell data it works fine. Also I have a dual band router and got the same effect
Sent from my SAMSUNG-SGH-I777
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Any chance you could force your router to 5ghz only and test again to see if the bluetooth causes the same interfearance?
Thanks

A little update on this,
I set my phone up the same way setup my table to see if the results are the same using a different device.
So music stored elsewhere in the house and streamed to the phone, and the phone transmits the music via bluetooth to the speakers.
Same problem occurs, and according to wifi analyser the wifi is strong, its the bluetooth which is having the problem.
Which leads me to believe that Bluetooth A2DP already pushes the bluetooth close to its limit and the added WiFi noise causes enough interfearance to cause the stutering music.
And this may be the case, as moving the phone or tablet right next to the bluetooth reciever on the speaker causes perfect playback.
At this point I am unsure how to go about remedying the situation, my options seem to be :
A: try to get a router that supports 5ghz and hope moving the WiFi bandwidth to a higher frequency alleviates the diruption to the bluetooth
B: try to find a DLNA based reciever for my music instead of using bluetooth.
C: open to suggestions :s

[Q] Streaming is lost while switching between WiFi and HSPA

Hi,
I'm just wondering if someone figured out a way or an app to prevent streaming from being restarted or lost when switching between WiFi and HSPA. It is annoying because I tend to listen to online radio and while walking on campus the phone decided to switch between networks depending on availability of WiFi.
The only safe solution I found is to turn off WiFi radio and keep on HSPA but I was wondering why can't we get constant internet and let the technology switch between WiFi and HSPA in the background without affecting connectivity?

ChocoboX said:
Hi,
I'm just wondering if someone figured out a way or an app to prevent streaming from being restarted or lost when switching between WiFi and HSPA. It is annoying because I tend to listen to online radio and while walking on campus the phone decided to switch between networks depending on availability of WiFi.
The only safe solution I found is to turn off WiFi radio and keep on HSPA but I was wondering why can't we get constant internet and let the technology switch between WiFi and HSPA in the background without affecting connectivity?
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Im pretty sure every phone will do this. It has to drop the connection, connect to the new one, handshake with IP designation... and start streaming again all before the buffer empties..... not gonna happen unless you can figure out how to set like a 20 or 30 second buffer in whatever app you are using.

username8611 said:
Im pretty sure every phone will do this. It has to drop the connection, connect to the new one, handshake with IP designation... and start streaming again all before the buffer empties..... not gonna happen unless you can figure out how to set like a 20 or 30 second buffer in whatever app you are using.
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I'm using TuneIn radio app to listen to a radio channel so pre-buffer is not available. Also when I call with Viber / Skype there is no pre-buffer and my call ends up being dropped. It's an annoying technical problem. I'm not sure if it only in Android or iOS and Windows Phone have it too.