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Is this function in our Kaiser? I've enable it from the Kaiser Tweak but today i tested it when i was in a tunnel....it did not work at all and the tunnel was 4 KM long....it should have had enough time to get a fix if it was working.
Is the Assisted GPS what i think it is?
How do you expect to get a GPS fix in a tunnel???
AGPS is basically what the QuickGPS app. does: it downloads sat. data (satellite locations) via a network connection from a server, so that TTF (time to fix) is reduced, since the device doesn´t have to download above data from the satellites themselves - which is slow....
Hope I was not too unclear, doing a search will give you much more and detailed info about how GPS works......and it doesn´t in tunnles....
As mentioned above, the AGPS uses server information (via cellular network) to locate the GPS satellite for a quicker fix and hash conditions. For a 4KM tunnel, I'm sure that your phone would have lost both GPS and network signal.
michi123 said:
How do you expect to get a GPS fix in a tunnel???
AGPS is basically what the QuickGPS app. does: it downloads sat. data (satellite locations) via a network connection from a server, so that TTF (time to fix) is reduced, since the device doesn´t have to download above data from the satellites themselves - which is slow....
Hope I was not too unclear, doing a search will give you much more and detailed info about how GPS works......and it doesn´t in tunnles....
Click to expand...
Click to collapse
Thats correct, there are som applications that tries to estimate where in the tunnel you are when the fix is gone. But I suppose this is a function of the application and not the GPS hardware
I stand partially corrected........ http://en.wikipedia.org/wiki/Assisted_GPS
michi123 said:
How do you expect to get a GPS fix in a tunnel???
AGPS is basically what the QuickGPS app. does: it downloads sat. data (satellite locations) via a network connection from a server, so that TTF (time to fix) is reduced, since the device doesn´t have to download above data from the satellites themselves - which is slow....
Hope I was not too unclear, doing a search will give you much more and detailed info about how GPS works......and it doesn´t in tunnles....
Click to expand...
Click to collapse
Which is why the title is "Assisted GPS".....I've done some search on AGPS and it's suppose to use the cellular to still get a fix when in the tunnel. Well....i read it sometime ago way before Kaiser was out and this was actually one of it's talked about feature in Kaiser. Using the Kaiser Tweak, one can enable this feature but i've tested it today in the tunnel with strong cellular signal, the GPS is dead until i came out of the tunnel.
I guess it also has to be supported by the particular program. Many TomTom PNAs have a dead reckoning mode which shows your position in a tunnel based on your "entry" speed for about 30 seconds, than the position freezes in the tunnel. Now that of course has nothing to do with AGPS, but it´s a way of overcoming temporary signal loss.
Best way would be to have an inertial sensor built into the phone like in fix-mounted car-navs......but then again, that would be overkill....
You have to remember that the Assisted GPS (Cellular network mode) relies on the fact the network itself supports the feature. I know most in the UK don't have it turned on in general use. They only allow it to be used by emergency services and the likes.
Perhaps that's the same in your country?
the_ape said:
You have to remember that the Assisted GPS (Cellular network mode) relies on the fact the network itself supports the feature. I know most in the UK don't have it turned on in general use. They only allow it to be used by emergency services and the likes.
Perhaps that's the same in your country?
Click to expand...
Click to collapse
Probably so.....oh well....it was worth a try
Thanks guys for the input.
So the internal GPS is one of the primary reasons I wanted the Kaiser, but when it comes down to it, it's the rare occasion that I actually use the GPS for much, especially stuff outside of basic "where am I" and "how do I get there" with gmaps...
Even when using quickgps, sometimes when I need to know where I am in relation to somewhere I'm going, quickly, it can still take way too long to pick up sat signals. I was in the car with a friend the other night (this is a guy that I constantly harass for having an iPhone (and he harasses me for the opposite)) and when we both pulled out our phones with gmaps, he knew right where we were, instantly, while all I could do was sit there and try my hardest to not make excuses about why I wasn't picking up a sat signal quickly.
Unless I'm using other GPS software, for my uses with gmaps, I'd really rather just be able to use the triangulation that non-GPS phones use. I tried turning off the GPS (GPS program port: None) in settings, but gmaps just searches anyway, not finding any hardware and/or sats.
Is what I want to do possible? I'm sure I'll get several responses on how I can speed up my sat signal pickup, which is NOT what I'm looking for. I just want to be able to use gmaps "My Location" without using the internal GPS, thus saving battery as well as getting a quicker pickup on where I am...
TIA
Geo
Yes, what your asking for is just using "My Location" without GPS. I use "My Location" all the time it does not activate my GPS. Here is an article that confirms "My Location" does not use GPS.
http://gigaom.com/2007/11/28/google-my-location/
-McMex
mcmexican said:
Yes, what your asking for is just using "My Location" without GPS. I use "My Location" all the time it does not activate my GPS. Here is an article that confirms "My Location" does not use GPS.
http://gigaom.com/2007/11/28/google-my-location/
-McMex
Click to expand...
Click to collapse
I know that My Location can be used without GPS, I'm just wondering if it's possible on a Kaiser. Assuming you have a Kaiser device, what and how do you have it set up so that gmaps doesn't activate/use GPS, but instead uses the cell towers?
On my device using GoogleMaps 2.0.0.11 the option for My Location works separately from Use GPS. The location (within 1.7KM) is picked up within seconds, GPS does take longer but is accurate to individual rooms within my home. The Cell based locator is obviously dependent on your Carriers Cell towers and I know in the past I have been unable to get a location over HSDPA or 3G but GPRS worked. Now though on TMobile UK at home I can get my cell based location using any non Wifi data connection.
Smack! Smack!
wizzzard said:
On my device using GoogleMaps 2.0.0.11 the option for My Location works separately from Use GPS. The location (within 1.7KM) is picked up within seconds, GPS does take longer but is accurate to individual rooms within my home. The Cell based locator is obviously dependent on your Carriers Cell towers and I know in the past I have been unable to get a location over HSDPA or 3G but GPRS worked. Now though on TMobile UK at home I can get my cell based location using any non Wifi data connection.
Click to expand...
Click to collapse
Ah, my apologies. Turns out I was not using the latest version. I've installed v2 with separate GPS/My Location, and My Location without GPS works great!
Thanks to all.
bananachunks said:
I know that My Location can be used without GPS, I'm just wondering if it's possible on a Kaiser. Assuming you have a Kaiser device, what and how do you have it set up so that gmaps doesn't activate/use GPS, but instead uses the cell towers?
Click to expand...
Click to collapse
By default My Location DOES NOT use GPS. You have to enable GPS from the menu.
Yes I have a Kaiser (actually 2at&t Tilts) and use Google Maps (v2.0.0.12)
kyphur said:
By default My Location DOES NOT use GPS. You have to enable GPS from the menu.
Yes I have a Kaiser (actually 2at&t Tilts) and use Google Maps (v2.0.0.12)
Click to expand...
Click to collapse
Yes, I found this out by installing the latest Google Maps (after my last ROM flash, I installed gmaps from a cab I already had on sd, which was apparently not a recent version).
Thank you - I love the fact that I can use gmaps without GPS now for the quick "where am I" without having to wait, but can still use GPS when I feel like it, and also still have it enabled in Settings for use in other GPS programs.
Thanks again
Hi,
I know (for example) the HTC Diamond, the internal GPS does an GPS Assist (send data packet to network to help GPS do triangulation, speeding GPS location. The obvious problem, is that I have to paid to my service provider that (one) data packet (in my case, 0.33€).
What I really dont know, if this is a software or hardware specification. I want to sincronyze my Niki with an Holux 236 (I'm searching for one), and I dont know I will have to paid anything to navigate around my country.
Anyone can help me?
Hi, I think we all need some clarification on the GPS vs. aGPS.
Here is a good article to read:
http://wmexperts.com/articles/gps_vs_agps_a_quick_tutorial.html
In conclusion you need a receiver in order to have any type of GPS on your phone. In most cases aGPS doesn’t require the maps to be present on your phone as they are been downloaded in real time.
If you have a GPS receiver on your phone you can use other software (like Garmin or TomTom) with maps loaded on you card. In this case there is no need for data communication and you can use it without paying aGPS fees. I confirm that as I use it on my Neon400.
The location identification through tower triangulation cannot be done with good accuracy and not in “real time”. It is not reliable for car navigation but it is used for police, etc to find your approx. location.
Hey guys quick question would the GPS still work on the n1 if you use it with only wifi. I was thinking of getting an offline map program and then using the GPS on the already downloaded map.
Sent from my Nexus One using Tapatalk
I heard that google will provide an offline navigation soon. Very soon.
So you don't have to go looking for anything.
GPS can work without any data at all, WiFi or cellular. It'll just take much more time to lock on the position.
Assistance data can be downloaded on WiFi as well as cellular data.
shane8002 said:
Hey guys quick question would the GPS still work on the n1 if you use it with only wifi. I was thinking of getting an offline map program and then using the GPS on the already downloaded map.
Sent from my Nexus One using Tapatalk
Click to expand...
Click to collapse
GPS = Provides a location. Besides speeding up an initial fix over data (AGPS) to get ephemeris data it doesn't care about data. And if you don't have any data available, it will download the ephemeris data itself after a few minutes anyway over the sat link.
What YOU mean is navigation... Google Maps? Waze? Those do require data. New Google Maps 5 coming out will not in certain circumstances, and there are other offline mapping programs out there, but most rely on data to download maps, routes, and create routes.
Hi Everyone.
Does anyone tried to use external bluetooth GPS reciever with Galxy Tab 2 7" (P3110) with Bluetooth GPS App from Android market?
Also, do I need root for this app to run?
Marek.
Why use an external GPS when it has GPS built in?
As far as I know it has A-GPS.
Or maybe I'm wrong...
Lypse said:
As far as I know it has A-GPS.
Or maybe I'm wrong...
Click to expand...
Click to collapse
A-GPS is better than GPS. It means GPS plus the ability to lock on quicker using Wifi and cell tower positioning.
Sent from my GT-P3113 using xda premium
"Reliability: Location determined via A-GPS are slightly less accurate than GPS GPS devices can determine location coordinates to within 1 meter accuracy
Cost: It costs money to use A-GPS devices on an ongoing basis because they use mobile network resources. GPS devices communicate directly with satellites for free. There is no cost of operation once the device is paid for."
Checkout last 2 points about Reliability and Costs. As a wifi-only p3113 user, having the ability to connect to GPS sat (even with no internet) would be a HUGE plus. So I would love to know how this bluetooth workaround works!
(sorry i can't link to anything because I'm a new user)
"Reliability:Location determined via A-GPS are slightly less accurate than GPSGPS devices can determine location coordinates to within 1 meter accuracy
Cost:It costs money to use A-GPS devices on an ongoing basis because they use mobile network resources.GPS devices communicate directly with satellites for free. There is no cost of operation once the device is paid for."
Checkout last 2 points about Reliability and Costs. As a wifi-only p3113 user, having the ability to connect to GPS sat (even with no internet) would be a HUGE plus. So I would love to know how this bluetooth workaround works!
(sorry i can't link to anything because I'm a new user)
Click to expand...
Click to collapse
Have you tried? With wifi off I lock on to GPS in 2 seconds. Offline maps navigation works perfect... what more do you want?
Sent from my GT-P3113 using xda premium
Oh and from Wikipedia...
Assisted GPS, generally abbreviated as A-GPS or aGPS, is a system which can, under certain conditions, improve the startup performance, or time-to-first-fix (TTFF) of a GPS satellite-based positioning system. It is used extensively with GPS-capable cellular phones as its development was accelerated by the U.S. FCC's 911 mandate making the location of a cell phone available to emergency call dispatchers.
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Metallice said:
Have you tried? With wifi off I lock on to GPS in 2 seconds. Offline maps navigation works perfect... what more do you want?
Sent from my GT-P3113 using xda premium
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Click to collapse
Well, instead of buying a GPS, I added some money and got a 7inch tablet P3113 also.
I have no tried offline GPS yet, how accurate is it? does re-direction work? which app would you recommend?
thank you
gunner05 said:
Well, instead of buying a GPS, I added some money and got a 7inch tablet P3113 also.
I have no tried offline GPS yet, how accurate is it? does re-direction work? which app would you recommend?
thank you
Click to expand...
Click to collapse
Accurate enough? Yes redirection works. Google maps has an offline feature. Or you could try navfree.
Sent from my GT-P3113 using xda premium
I love it when people are always confused about A-GPS.
A-GPS is BETTER than just GPS.
Assisted GPS means, that instead of just relying on the GPS satllites, it helps setting the position from WIFI and cell network.
It does NOT cost any money.
It is also handy, when you are indoors, so your device does not get a position fix from GPS satellites.
Besides, this samsung receives the Russian GLONASS satellites in addition to the American GPS, so its very precise.
My 10.1 tab2 (has the same receiver) sees 15+ satellites indoors!
GPS test shows precision down to 1m.
Bela
A-GPS need data connection
Hi, these posts are great to explain the difference between the A-GPS and regular GPS, but what happens if you do not have a data plan on your tablet and you are not in a wireless range. There is no way to activate the GPS.
The only way I have been able to use my no data Samsung 10.1 is to activate the GPS while in a wireless area then I can go for a drive (will always stay connected). If I would try to activiate the GPS on the road, I am out of luck.
Any work arounds?
Tether your phone to it....or. ... dont use a tablet for directions use your smart phone....and if you tell, e you dont have one then go return your tablet and get a real phone...
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jstompanato said:
Hi, these posts are great to explain the difference between the A-GPS and regular GPS, but what happens if you do not have a data plan on your tablet and you are not in a wireless range. There is no way to activate the GPS.
The only way I have been able to use my no data Samsung 10.1 is to activate the GPS while in a wireless area then I can go for a drive (will always stay connected). If I would try to activiate the GPS on the road, I am out of luck.
Any work arounds?
Click to expand...
Click to collapse
GPS works fine away from wifi on my tab-2 7 inch. It has real gps and doesn't need a wifi connection. You do have to turn it on in system seyyings though,
Allen Edwards said:
GPS works fine away from wifi on my tab-2 7 inch. It has real gps and doesn't need a wifi connection. You do have to turn it on in system seyyings though,
Click to expand...
Click to collapse
what did you do to get it to work without wifi? I have all three boxes checked in settings under location.
rbellis said:
what did you do to get it to work without wifi? I have all three boxes checked in settings under location.
Click to expand...
Click to collapse
I have a Tab-2 7 inch with no G-whatever. The GPS is real and doesn't need anything other than to turn it on. It works fine. Try "GPS Test" it will tell you what is going on.
Just a point, an external GPS module will have about 1/2 the positional error of the built in GPS if you have WAAS or equivalent DGPS coverage. I get about 30 feet peak to peak error with the built in GPS and about 15 feet with my external Qstarz unit.
Tethering
Tethering your phone for GPS use will eat up your data plan. T-Mobile for example will limit your roaming data bucket if your phone is not within their network. The GPS feature of tablets is nice and the maps are large but I use a separate GPS unit for long distance driving and there's no extra charges. I bought a unit from Costco with free map updates for life! I would rather tether my tablet for internet use while on the road, it breaks the boredom with your passengers and they can watch Netflix too, depending on the signal. I do find that there is a lag connecting to the internet because the signal has to refresh with new tower signals.
Do you have to have a WiFi signal to use the Gaps? I lobe using my tablet in my truck but don't always want to connect my tablet to my phone
rbellis said:
Do you have to have a WiFi signal to use the Gaps? I lobe using my tablet in my truck but don't always want to connect my tablet to my phone
Click to expand...
Click to collapse
Assuming you mean A-GPS, no, the A- bit (assisted) needs data but that's just to speed up the initial fix time.
However, if you want to do something useful with the information about where you are, you may need a data connection; Google maps for example needs a data connection to get the maps, unless you have pre-cached them for the area you are in.
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