Related
Hi guys,
I thought I would share what I discovered today. If this solution has been found, I apologize. Most users have been trying to get their Fuze GPS to lock on to satellites. Having used several GPS phones and many Bluetooth GPS pucks, I would say I'm somewhat experienced with using GPS on the PPC platform.
I have no issues with getting a lock on my Fuze. My issue is with Fuze's GPS chip randomly stop streaming data to my GPS applications. This usually happens after the initial lock. So for example:
a) Get a lock using any GPS application (GPS Test for example)
b) Exit GPS application
c) Launch GPS application again. Fuze will take several seconds to regain lock.
d) Fuze will take several seconds again to lock in, THEN it just stop streaming data to the GPS application!
I was able to reproduce this consistently. If you're using Garmin or TomTom, they will indicate that GPS lock is lost or something to that effect.
THE SOLUTION: Turn OFF aGPS!
a) Start->Setting->System->AGPS Settings
b) Uncheck BOTH "Enable AGPS" and "Enable AGPS location information..." (under the Privacy tab)
I was able to show that this consistently resolved my GPS data stream stopping problem. I'm using the .28 radio, but try it on the stock radio to see if that works and let the community know. What about QuickGPS? AFAIK, it's not causing any problem at all.
I hope this is helpful.
After standing on my deck for 20mins last Friday waiting on locks, I follow above and get a lock in 10secs(in my living room).
Turned off AGPS was the only change
It looks like without AGPS, the GPS would just stream whatever info it had cached even if it lost signal.
AGPS would clear last state instead and so become highly sensitive to signal-loss on the next poll. It doesn't help that this device is weaker in picking up GPS signals.
Yes, turn off AGPS.
NuShrike said:
It looks like without AGPS, the GPS would just stream whatever info it had cached even if it lost signal.
AGPS would clear last state instead and so become highly sensitive to signal-loss on the next poll. It doesn't help that this device is weaker in picking up GPS signals.
Yes, turn off AGPS.
Click to expand...
Click to collapse
Indeed, that would be exactly how I like my GPS to behave (use the cached ephemeris data). In fact, that was how all Bluetooth GPS puck works before the advent of AGPS. I guess AGPS is a good concept, but its implementation needs to be further tweaked.
If you have not used your GPS in a week or so, then AGPS is an advantage. Daily use, perhaps not so much.
Hi,For some odd reason my quick GPS does not work anymore. My TomTom is non functional as well. I have checked my data connection and it is active. Can somebody help please.
Thanks in advance.
Can somebody please assist? I have checked my data connection and it is working. I have internet connection, for some strange reason Quick GPS and TOMTOM is not working. Is there a setting somewhere to activate this?
Thanks
Can somebody please assist, I really would appreciate a fix to this issue.
THANKS
I am having an issue with my GPS, except I got my unit 2 days ago, and can not get the GPS to work at all, with OEM rom or with any other custom rom. (it wont work with garmin xt, google maps, HTC GPS, or GPS tweak tools).
I hope I dont have a bad unit.
Strange thing, mine worked fine for about three weeks and all of a sudden it stopped working.
did either of you notice the unit getting *really* hot just before it went out? ...as in I-stuck-it-in-my-pocket-and-now-I-have-crotch-scars kind of hot?
zahbaker said:
Hi,For some odd reason my quick GPS does not work anymore. My TomTom is non functional as well. I have checked my data connection and it is active. Can somebody help please.
Thanks in advance.
Click to expand...
Click to collapse
When you say that quickGPS is not working, what do you mean? It doesn't display the page with the "Download" button? You press the "Download" button and it can't connect? It connects but never finishes downloading the data? What are the specific symptoms you're seeing?
I see the quick gps download button, when I click download, the message that I get is connection failed. My tomtom as well does not work anymore. I do have inetrnet connectivity, it's just the quick gps and tomtom that is not working. Please assist. Thanks
Patience
equinox2355 said:
I am having an issue with my GPS, except I got my unit 2 days ago, and can not get the GPS to work at all, with OEM rom or with any other custom rom. (it wont work with garmin xt, google maps, HTC GPS, or GPS tweak tools).
I hope I dont have a bad unit.
Click to expand...
Click to collapse
I've had my TP for 3 days now. As with the Kaiser and my hermes Holux bluetooth device it takes approx 5 - 10 mins to get the initial fix on satellites after that it appears to be working fine. Google maps, my old TTv6 all working fine. Takes about 30secs from startup to pickup Sats and shows about 5-7 sats everytime.
So just be patient with the initial startup. It should come.
zahbaker said:
I see the quick gps download button, when I click download, the message that I get is connection failed. My tomtom as well does not work anymore. I do have inetrnet connectivity, it's just the quick gps and tomtom that is not working. Please assist. Thanks
Click to expand...
Click to collapse
What are the values of the registry keys HKLM\Software\HTC\QuickGPS\SNTP\Server1, Server2, and Server3? (I have values like xtra1.gpsOneXTRA.net.) What happens if you type that address into Internet Explorer or Opera?
When I type the address in internet explorer I get to the RX Networks webpage.
My internet is working fine, it's the gps thats not working.
Thanks
zahbaker said:
When I type the address in internet explorer I get to the RX Networks webpage.
My internet is working fine, it's the gps thats not working.
Click to expand...
Click to collapse
Well, QuickGPS is an Internet app, not a GPS app. All it does is download a week's worth of satellite ephemeris data from one of those servers. When you reported "connection failed" as the problem you were seeing in QuickGPS, that seemed to indicate that you weren't able to connect to the server.
So if you can get to the server, as it appears, maybe the message is about connecting to the GPS unit (to transfer the ephemeris data? Not sure about the architecture of the GPS here). What values do you have in the "External GPS" pages on the System settings tab? Have you tried the GPSTest tool? Is it able to connect to your GPS unit after you put the appropriate values into its "GPS Settings" page?
If GPSTest isn't able to connect to the GPS unit, then I think you probably have a hardware fault and should exchange your phone for a new one.
Can Someone tell me what is the exact job of the Quick GPS which is in Programs ? for me was expired and i just update through gprs and then show me some valid days remaining.
is it help to connect to satellite faster or something else ? and what happen if i don't update it? thanks.
When using WiFi, QuickGPS seems not to work if it's the first program to use the connection. If you make an Internet connection with some other program first (e.g. PIE), QuickGPS will work over WiFi. At least that's my experience with the stock AT&T ROM.
This problem doesn't seem to occur with GPRS/3G/HSDPA connections, only with WiFi.
P525Lover said:
Can Someone tell me what is the exact job of the Quick GPS which is in Programs ? for me was expired and i just update through gprs and then show me some valid days remaining.
is it help to connect to satellite faster or something else ? and what happen if i don't update it? thanks.
Click to expand...
Click to collapse
Yes, QuickGPS reduces the wait for getting your position when you first start up a mapping program.
The way GPS works is that the GPS receiver uses the positions of the satellites and the distance to those satellites to calculate its own position on the Earth. That requires knowing very precisely where the satellites are at any given time. The satellite position information is called the ephemeris.
Each satellite, in addition to broadcasting time signals (which enable the GPS receiver to determine the distance to the satellite), transmits its own ephemeris. A GPS receiver starting up from scratch has to receive the ephemeris data from each satellite it will be using before it can figure out its own position.
QuickGPS eliminates the need to receive the ephemeris data from the satellites by sending a week's worth of ephemeris data over the Internet. The GPS receiver can use that immediately instead of getting it from each satellite in turn. That significantly reduces the TTFF (time to first fix), i.e., the initial wait before you can start using a GPS-based map program.
The "expiration date" is simply the last point in time that is covered by the ephemeris data sent by QuickGPS. After that point, you have to get more data, either from QuickGPS or from the satellites.
wmm said:
Yes, QuickGPS reduces the wait for getting your position when you first start up a mapping program.
The way GPS works is that the GPS receiver uses the positions of the satellites and the distance to those satellites to calculate its own position on the Earth. That requires knowing very precisely where the satellites are at any given time. The satellite position information is called the ephemeris.
Each satellite, in addition to broadcasting time signals (which enable the GPS receiver to determine the distance to the satellite), transmits its own ephemeris. A GPS receiver starting up from scratch has to receive the ephemeris data from each satellite it will be using before it can figure out its own position.
QuickGPS eliminates the need to receive the ephemeris data from the satellites by sending a week's worth of ephemeris data over the Internet. The GPS receiver can use that immediately instead of getting it from each satellite in turn. That significantly reduces the TTFF (time to first fix), i.e., the initial wait before you can start using a GPS-based map program.
The "expiration date" is simply the last point in time that is covered by the ephemeris data sent by QuickGPS. After that point, you have to get more data, either from QuickGPS or from the satellites.
Click to expand...
Click to collapse
wow, interesting, lots of new and useful information for me that i didn't know that before. thanks man.
Not seeing any 10 minute delay like you saw. Are you updating current sat location data with QuickGPS? I notived using GPStest and MS Pocket Streets that Sat connections go up and completely down all the time. Nice thing is, GoogleMaps ignores the quick downs so it LOOKS like a good connection that never disapears. don't know if this is intentional on Google's part, but it works, even standing still/walking (once connection is made). Lovin the Sat view whilst I use GPS for directions.
Same here: Quick GPS cannot connect... What is this? Maybe a server fault, or do I need to Hard Reset?
LE: Fixed it: I just run Connection Setup again, then it suddenly worked.
i just did a hard reset and quickgps will connect only after i open up a browser and googlemaps sits at seeking gps sats. i had it working 2 days ago and then my battery died and it hasnt worked since. i did notice that the phone was really warm though.
quickqps hasnt worked for me for a couple of weeks now...and i still havent fod anything to fix it
Okay, so here's the deal. If we get AGPS working in some way, we can get MUCH quicker GPS fixes (30 seconds or less). I'm the coder for GPSToolPro you can find here in the Software subforum of the Raphael forum. I'm hoping to incorporate this into the program in some way.
I've managed to obtain the Lat/Long coordinates using Cell Tower information and Google.
There are two ways to solve this issue.
#1
Now, I'm looking to use these Registry Keys
HKLM\Software\HTC\SUPL AGPS\ServerIP
HKLM\Software\HTC\SUPL AGPS\ServerPort
HKLM\Software\HTC\SUPL AGPS\GPSMode
The plan is to set the ServerIP to 127.0.0.1 and run any port. Then the GPSToolPro will listen in on the port number on the device and RESPOND with the Lat/Long information obtained from Google. Right now, what I need is, somebody who has AGPS working with their provider to try to packet sniff and get see how we can make our own AGPS server run on the device. GPSMode mode will be set to "1", not "2". This is specific to the QualComm's GpsOne unit. The values are the following:
0 - Standalone - Your handset has no connection to the network, and uses only the GPS satellite signals it can currently receive to try and establish a location.
1 - MS Based - Your handset is connected to the network, and uses the GPS signals + a location signal from the network.
2 - MS Assisted - Your handset is connected to the network, uses GPS signals + a location signal then relays its 'fix' to the server, which then uses the signal strength from your phone to the network towers to further plot your position. You can still maintain voice communication in this scenario, but not 'Internet/Network service' ie Web Browser, IM, streaming TV etc..
4 - MS Assisted/Hybrid - Same as above, but network functionality remains. Normally only in areas with exceptional coverage.
Click to expand...
Click to collapse
I haven't been able to find the signal strength of the tower I'm connected to yet so right now, I'm limited to mode 1. Also, I can only find information on the tower I'm currently connected to, not all of them so I can't try cell tower triangulation yet.
This solution is limited to only working with HTC GpsOne devices.
#2
We can also try using the IOCTL_GPS_WRITE_ASSISTED command. This command will directly send the AGPS info to the GPS device. The question is, how do we send this information? I believe we need to get a AGPS signal first, use IOCTL_GPS_READ_ASSISTED, parse that information, figure out the format, get Lat/Long from Google, format it in the same way as received from IOCTL_GPS_READ_ASSISTED and send it back with IOCTL_GPS_WRITE_ASSISTED.
This universal for all Windows Mobile phones.
For method #1, I need somebody who has an HTC device with a working AGPS signal (from their provider or whomever).
For method #2, I need any Windows Mobile device that has a working AGPS signal.
I say method #1 requires HTC device because supposedly AGPS isn't standardized and one manufacturer's AGPS format may differ from another.
Hopefully, with the your help, we can get this working.
let's support CLShortFuse iniciative, it would be incredible if we would get AGPS working.
My AGPS (Spain-Orange) doesn't work at all. And i don't know anybody that has a working AGPS device/operator combination.
I've read around XDA that some people in the Raphael CDMA section have AGPS working, maybe we could post there to see if somebody replies and can collaborate with this project.
I was just about to post something similar. Only I wasn't as prepared with as much information. I was going to try to start a thread to consolidate the AGPS server settings for each additional carrier since I'm with T-Mobile and using an AT&T Fuze. My AGPS is not working at all. It keeps trying to connect to AT&T's Media Net and naturally, it fails.
Would it be possible to maybe create some kind of way to trick the devices into thinking that they are AT&T Fuze's and connect to the Media Net to connect to AT&T's AGPS Servers?
I Personally support this project 100%!!
Side note - Has anyone gotten AGPS working on USA T-Mobile at all? I attached a screenshot of the result of what happens when I try to use AGPS on my Fuze.
dharvey4651:
Code:
[HKEY_LOCAL_MACHINE\SOFTWARE\HTC\SUPL AGPS]
"Network"="MEdia Net"
"GPRSConnection"="MEdia Net"
You need to change those to whatever your network is called on t-mobile
I dont know much about any of this, I have an AT&T Fuze with AT&T service, I also have the AT&T Navigator Software and an account with it, so, is there anything I can do to help? how do I know if my AGPS works or not?
dharvey4651 said:
I was just about to post something similar. Only I wasn't as prepared with as much information. I was going to try to start a thread to consolidate the AGPS server settings for each additional carrier since I'm with T-Mobile and using an AT&T Fuze. My AGPS is not working at all. It keeps trying to connect to AT&T's Media Net and naturally, it fails.
Would it be possible to maybe create some kind of way to trick the devices into thinking that they are AT&T Fuze's and connect to the Media Net to connect to AT&T's AGPS Servers?
I Personally support this project 100%!!
Side note - Has anyone gotten AGPS working on USA T-Mobile at all? I attached a screenshot of the result of what happens when I try to use AGPS on my Fuze.
Click to expand...
Click to collapse
Actually, there are AGPS standards. Today, most GPS chipset vendors use their own AGPS platforms. However, that is rapidly changing. To my knowledge, most (including Snaptrack/GPSOne, aka Qualcomm) support 'secure user plane location architecture' or SUPL. This is a standard adopted by the OMA or 'Open Mobile Alliance' (www.openmobilealliance.org). The OMA is basically almost all of the heavy weights of wireless including Silicon manufacturers, Handset Vendors, Carriers, etc.
Currently, the OMA has ratified SUPL v1.0 and the standards body and members are working on the next version - 2.0.
What is SUPL? In a nutshell, SUPL is designed to support location determination regardless of the location server used by the mobile carrier. As the number of applications grow for LBS, so does the need by developers to work across location platforms and mobile device hardware manufacturers.
CLS, I am a bit confused as to your intentions. The Raphael supports artificial ephemerids (Qualcomm's GPSOneXTRA) which cut cold-start TTFF down to under 10 seconds. Using cellular triangulation won't buy you much.
Is there another reason I am missing here?
Da_G said:
dharvey4651:
Code:
[HKEY_LOCAL_MACHINE\SOFTWARE\HTC\SUPL AGPS]
"Network"="MEdia Net"
"GPRSConnection"="MEdia Net"
You need to change those to whatever your network is called on t-mobile
Click to expand...
Click to collapse
I'll try this now. I think my data is called "T-Mobile Data"
fatguybp said:
I dont know much about any of this, I have an AT&T Fuze with AT&T service, I also have the AT&T Navigator Software and an account with it, so, is there anything I can do to help? how do I know if my AGPS works or not?
Click to expand...
Click to collapse
If your AGPS is working, your GPS should lock in just under a minute every single time, sometimes even faster. With my old Sprint Touch(back when I was with Sprint), I was able to lock onto upwards of 7 satellites every single time in less than 10 seconds. Now it takes 2-5 minutes every time with my Fuze on T-Mobile.
Operation619 said:
Actually, there are AGPS standards. Today, most GPS chipset vendors use their own AGPS platforms. However, that is rapidly changing. To my knowledge, most (including Snaptrack/GPSOne, aka Qualcomm) support 'secure user plane location architecture' or SUPL. This is a standard adopted by the OMA or 'Open Mobile Alliance' (www.openmobilealliance.org). The OMA is basically almost all of the heavy weights of wireless including Silicon manufacturers, Handset Vendors, Carriers, etc.
Currently, the OMA has ratified SUPL v1.0 and the standards body and members are working on the next version - 2.0.
What is SUPL? In a nutshell, SUPL is designed to support location determination regardless of the location server used by the mobile carrier. As the number of applications grow for LBS, so does the need by developers to work across location platforms and mobile device hardware manufacturers.
CLS, I am a bit confused as to your intentions. The Raphael supports artificial ephemerids (Qualcomm's GPSOneXTRA) which cut cold-start TTFF down to under 10 seconds. Using cellular triangulation won't buy you much.
Is there another reason I am missing here?
Click to expand...
Click to collapse
I've never had my Fuze lock it's GPS 10 seconds or less. NEVER. It's usually 2-5 minutes on average. Sometimes it doesn't even lock at all after standing outside in the cold for upwards of 5 minutes smoking a cigarette.
Dharvey:
I get 3D position fixes in open-sky conditions in ~6 seconds.
Under my balcony in my apartment in a highly attenuated partial-sky view I will get 3D fixes in ~20 seconds.
Indoor in my home office with a south facing window and light foliage I'll see 2D in about 1 minute and 3D almost always under 2 minutes.
At my corporate office with a re-radiating GPS antenna I'll see consistent GPS lock in ~6 seconds.
Hell, I'd love to put this in the multi-channel GPS simulator at my desk but I don't think that's a good idea.
Operation619 said:
Dharvey:
I get 3D position fixes in open-sky conditions in ~6 seconds.
Under my balcony in my apartment in a highly attenuated partial-sky view I will get 3D fixes in ~20 seconds.
Indoor in my home office with a south facing window and light foliage I'll see 2D in about 1 minute and 3D almost always under 2 minutes.
At my corporate office with a re-radiating GPS antenna I'll see consistent GPS lock in ~6 seconds.
Hell, I'd love to put this in the multi-channel GPS simulator at my desk but I don't think that's a good idea.
Click to expand...
Click to collapse
Yes you definitely have working AGPS
I made the registry changes mentioned above and I'm about to test my AGPS now. If it works I'll make a cab file to make the registry changes for everyone who may want it. (T-Mobile Only of course)
EDIT:: Making the following registry changes seems to have helped a little. My GPS locked in about 1 minute in my bedroom from a cold start(after soft-reset) It also connected to the data instead of error-ing out which was also different.
FROM:
[HKEY_LOCAL_MACHINE\SOFTWARE\HTC\SUPL AGPS]
"Network"="MEdia Net"
"GPRSConnection"="MEdia Net"
TO:
[HKEY_LOCAL_MACHINE\SOFTWARE\HTC\SUPL AGPS]
"Network"="T-Mobile Data"
"GPRSConnection"="T-Mobile Data"
EDIT AGAIN:: I just soft-reset and from a dead cold start(GPS OFF COMPLETELY) it locked onto 8 satellites in less than a minute in my bedroom agian.
I'm starting to like this phone again.
EDIT AGAIN...Spoke too soon... It's doing it again. It was fast for 2 locks and 2 soft-resets but now it's slow again.
This is what the SUPL AGPS key looks like in my registry:
Code:
REGEDIT4
[HKEY_LOCAL_MACHINE\Software\HTC\SUPL AGPS]
"EnableAGPS"=dword:00000001
"Network"="T-Mobile Data"
"GPRSConnection"="T-Mobile Data"
"PrivacyMethod"=dword:00000003
"TLSHostName"="h-slp.mnc410.mcc310.pub.3gppnetwork.org"
"ServerIP"="199.88.233.169"
"ServerURL"="h-slp.mnc410.mcc310.pub.3gppnetwork.org"
"DynamicURL"="h-slp.mnc000.mcc111.pub.3gppnetwork.org"
"EnabledPrivacyMethod"=dword:00000001
"CloseConfirmMsgTime"=dword:0000003C
"EnableLocInfo"=dword:00000001
"ServerPort"=dword:00001C6B
"QosPerformance"=dword:00000059
"QoSAccuracy"=dword:00000032
"TimeBetweenFixes"=dword:00000001
"NumberFixes"=dword:3B9AC9FF
"GPSMode"=dword:00000002
[HKEY_LOCAL_MACHINE\Software\HTC\SUPL AGPS\DefaultSetting]
"EnableAGPS"=dword:00000001
"CloseConfirmMsgTime"=dword:0000003C
"PrivacyMethod"=dword:00000000
"EnableLocInfo"=dword:00000001
Nope. I'm not using any type of TOA or AOA, or what you and the OP are describing as "AGPS" on this handset. Network provided AGPS is disabled. Furthermore, GPS performance is somewhat better when my GSM radio is off.
Note that I am using the artificial ephemeris information provided by the Q or "QuickGPS" as most users know it.
These shots were taken in my home office scenario I described above. PDoP is pretty high (but still good) as I am in a poor visibility scenario (lots of multipath, limited sky view, etc.)
Well... I finally got AGPS working for me(at least it feels like it). My GPS is now locking onto 6-10 satellites in less than a minute every single time. Even after a soft-reset without using any kind of primer like GPSToday or HTC GPS Tool.
I'm a happy camper.
All it took was a little tweaking to the registry and now it works.
I attached a cab file to fix the AGPS.
WARNING!!! This is ONLY FOR USA T-Mobile!!
Harvey,
Are you downloading the QuickGPS file? If so, what's the age of the download?
Operation619 said:
Harvey,
Are you downloading the QuickGPS file? If so, what's the age of the download?
Click to expand...
Click to collapse
Where does QuickGPS download to? I downloaded it today but I never bothered looking for the file it downloaded.
I would suspect you are still not using network-assisted positioning. The QuickGPS file is aiding the receiver.
If you were using network assistance you would be getting rough position (<1000m) in seconds. Even indoors or your basement where there is zero GPS signal available.
Here's a quick way to test if AGPS is really working.
Set GPSMode to 1. GPSMode is normally set to 2 - it will auto-fallback if AGPS fails.
GPSMode 1 will continually try to get an AGPS fix, and not send you any NMEA data at all if it doesn't. You'll probably need to up the value in TimeBetweenFixes from 1 to at least 3 or 4, allowing only 1 second between fixes doesn't give your phone enough time to send location data to the AGPS PDE server and get a response.
Anywho, in GPSMode 1 i get no NMEA strings at all, so my agps is definitely broke
Operation619 said:
I would suspect you are still not using network-assisted positioning. The QuickGPS file is aiding the receiver.
If you were using network assistance you would be getting rough position (<1000m) in seconds. Even indoors or your basement where there is zero GPS signal available.
Click to expand...
Click to collapse
You may be right but I feel that It's still using some form of network assisted GPS because it's never been this fast before. I hard-reset and did not use QuickGPS at all and my results are the same.
Try turning off your radio to see if you still have the same TTFF.
Remember QuickGPS will download it's data in the background on a cradled connection with no cue from you, too, so make sure it didnt download \Windows\xtra.bin and inject it without you knowing
Also the QuickGPS data survives a hard reset if "ClearGPS" flag isnt set for the hard reset program or you don't have the CleanGPSData package in your ROM.
Operation619 said:
Try turning off your radio to see if you still have the same TTFF.
Click to expand...
Click to collapse
I'll try this now.
EDIT:: Seems you're right. It just locked onto 10 satellites in flight mode right in my bedroom in less than 30 seconds. WOW. Never saw it do that before.
Good catch Da G.
Harvey - are you willing to do a little test?
To test if network assistance is available and helping you might want to try the following.
This test will need to be performed at the same location in an ideal, open-sky condition with the handset in the same orientation in your hand each time:
1. Make sure your handset is free of the QuickGPS file.
2. Shut off all radios, go outside in a clear, open-sky environment.
3. Acquire 3D position fixes 10 times. Record the times it takes to acquire in seconds (aka TTFF).
4. Average the TTFFs
5. Power Cycle the handset.
6. Ensure no programs or registry settings inhibit AGPS or network assistance.
7. Make sure there is no QuickGPS file present.
8. Turn on your GSM radio.
9. Re-acquire GPS 3D position fixes in the same open-sky area 10x and record each TTFF
10. Average the TTFFs
What's the result?
Anybody using AT&T FamilyMap? I'm giving the free trial a go and cannot get a location better than a mile or two. This is true even when I have a GPS lock with a HDOP of 1.1 or better. I have AGPS enabled and unrestricted. Phone is a Fuze with AT&T/HTC WM6.1 OEM ROM.
Peter
Sounds like your locking onto cell towers instead of GPS.
Get yourself a GPS starter utility like GPS Viewer
The original post indicates I have a good position lock with GPS while testing. I am using VisualGPSce. I did more testing today and it does not appear that the GPS position is being used at all by FamilyMap. Even with a good GPS position I was presented with a 6.1 mile position radius in FamilyMap. I guess I need an alternative to FamilyMap that will attempt to use GPS but use cell tower triangulation if needed. I have Sprite Terminator but it will only provide a position if there is a GPS fix. This intent is to find my son's cellphone when he loses it (again).
Ah, as for the intent, try W.I.M.P.
plfinch said:
...I guess I need an alternative to FamilyMap that will attempt to use GPS but use cell tower triangulation if needed...
Click to expand...
Click to collapse
yep, family map does' tuse the devices GPS
from at&t's family map FAQ
Yes. You can signup for a FamilyMap account to locate a lost or stolen phone.
Note: The phone must be turned on and in AT&T network coverage to be located. The location will be approximate and will not be accurate enough to find a lost phone, for example, in a specific room in a house. When a phone becomes locatable, it receives a text message saying that it can be located by AT&T FamilyMap.
Click to expand...
Click to collapse
FamilyMap does use GPS if available:
"AT&T FamilyMap uses several different techniques to locate a phone. AT&T phones that are A-GPS can return a very accurate location (within a few yards) if the phone can "see" the GPS satellites. For all other phones, the system automatically uses alternative location technologies. In these cases, you may receive a location with an accuracy of a few hundred yards or more. When you request a location, you will be given the best possible location fix given the conditions."
I just tried it on a Motorola Tundra with AGPS and it routinely gets within 10-15 yards which is close enough for my purposes. But on a Fuze it does not use the AGPS and can have an error radius of several miles using tower triangulation. This is true, as I said, even with a good GPS fix when location is requested.
Peter
Hi all,
I'm going on holiday and would like to use my Android (Galaxy Tab) for offline navigation. I'd like to keep my GSM module switched off all the time to avoid data roaming charges. I'll do my surfing etc over WIFI where available.
I'd like to use AGPS for a quick satellite fix.
Can I download AGPS satellite data over WIFI, or does this require a GSM (GPRS/UMTS) connection?
How do I manually trigger AGPS download on Android?*
Help is much appreciated!
N.
* On the Windows Mobile devices of old there used to be a program calles "QuickGPS" or similar that would download AGPS satellite data, but I don't see any such option on Android - - ?
Android GPS requires a LIVE data connection to function with realtime navigation, if u are just using Wi-Fi this won't work.
On the other hand, assuming u have a hefty sdcard in your tablet, u could use "sygic GPS" from market, that WILL allow offline GPS.
icenight89,
I'm using Navigon, which keeps map data on board, no data connection required there. Sygic is another option. Google Navigation does require a live connection, but Navigon, Sygic and others do not. Storage required for on-board map data is not all that massive btw, my Navigon maps of Europe require ~ 2 GB.
My question was more on the point of assisted-GPS satellite data. How do I download current satellite data so that my GPS knows where to look (thus getting a quicker satellite fix) if I want to avoid a mobile data connection via GSM?
Once I have a GPS fix, offline satnav is no problem.
Any ideas there?
N.
Android downloads agps data automatically, there is no way to "force" an update. U could try connecting to wifi and then running android nav (google maps/navigation) with GPS enabled, that would cache the new data I presume. That's your only option really
On a side note, I consider 2gb for one sole app a lot, whether its maps or not lol
Um, GPS Test software lets you do this.
syl0n said:
Um, GPS Test software lets you do this.
Click to expand...
Click to collapse
Five years later, google lands me on this thread because I too was asking "can I update AGPS over wifi?". (Empirical evidence: I can, because at the trail-head I get a lock in about 10 seconds. On the other hand, maybe it didn't update, and the GPS hardware/antenna is just that good. )
And since answers were given without answering the question, I will keep looking.
But as for GPS Test, it is essential. Prior to using any nav app, I open GPS Test and watch it get a lock, or not, because the satellite display shows me exactly what is going on, as opposed to the nav apps, which just sit there maybe getting a lock maybe not and you have no effing idea why.