Database Develop

Assisted GPS

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.

Problems with GPRS, wont connect. Many ROM's and Radios

My Location: Fort Worth, TX
My Provider: ATT
I've got this problem among several ROM's and Radio's that I get from time to time. I'd like to know how to fix it. Then once in a while I'll flash a new ROM/Radio combo and it works fine. Here's the story:
I can open up and browse the net fine with Pocket IE. It shows connected as MediaNET (HSDPA). Internet is fast and reliable.
However, with just about any other application it fails. E-Mail, QUICKGPS UPDATE, etc. I have the [H] icon.
Here's what happens if I open up "QuickGPS" and click download:
I get the [3G] icon.
* Click download
* Bubble that says: Connecting to My ISP, GPRS.... opens.
* Bubble above disappears. Bubble re-appears with identical info.
* Bubble says:
Dialed:
Could not connect for an unknown reason. To check your connection settings and change tem if needed, tap settings. If the problem continues, reset your device according to the manufacturers documentation and try again.
I've done the following to troubleshoot:
* Ensured GPRS auth is set to CHAP.
* Under connections setting my only connection is Media NET. It is a:
** Cellular Line (GPRS, 3G)
** Access point name: wap.cingular
** Username: [email protected]
** Password: is unknown. Censored. Probably CINGULAR1
I have tried adding a new cingular connection.
* Without a user/pass/domain.
It simply says Connecting to My ISP, GPRS.... but nothing happens. TCP requests seem to time out.
Any ideas? I'd much rather connect with HSDPA instead of GPRS anyways if it's possible.

I'm thinking it's a ROM/RADIO mismatch.
I flashed back to a ATT ROM with an included radio, and it works fine.
I was having problems with L26 ROM. Anyone have a link to a suggested radio for US with this ROM?
Here's a ROM with problems:
l26 rom
WWE 3.02.405.0
RADIO 1.64.06.04
Any ideas?

HSDPA troubles in San Francisco
I'm using an AT&T Tilt in San Francisco. Is there anyone else here in my neck of the woods who's getting HSDPA?
Read on!
jon_k said:
I'm thinking it's a ROM/RADIO mismatch.
I flashed back to a ATT ROM with an included radio, and it works fine.
I was having problems with L26 ROM. Anyone have a link to a suggested radio for US with this ROM?
Here's a ROM with problems:
l26 rom
WWE 3.02.405.0
RADIO 1.64.06.04
Any ideas?
Click to expand...
Click to collapse
I can confirm similar difficulties with many ROM/Radio combinations. One difference for me, though: it's VERY rare for me to get the HSDPA icon anymore. I can get EDGE via most radios, but establishing a GPRS connection in general is also difficult. Often I'll get data working, only to find that the phone connection no longer works!
I've tried using PAP and CHAP, many different radios, many different ROMs, isp.cingular, wap.cingular, entering settings as MEdia Net, entering them as My ISP. Turning proxies on and off has no effect.
There was a ROM I used here ages ago (seems that way, anyway) that gave me excellent HSDPA coverage. I'm still trying to find it in the forums so I can flash back to it.
I'm using an AT&T Tilt in San Francisco. Is there anyone else here in my neck of the woods who's getting HSDPA?
If so, please post your settings! wap? isp? chap? pap? radio version? ROM version?
Thank you!

If you first connect with IE and then with IE still open attempt a quickgps update will it work then?

GGW69 said:
If you first connect with IE and then with IE still open attempt a quickgps update will it work then?
Click to expand...
Click to collapse
Yes: When it does work, the EDGE connection I establish will work with any app. However, it may take a while for any signal to be found. Should I be limiting my BAND settings, or allowing it to run on Auto/Auto?

chaosniner said:
Yes: When it does work, the EDGE connection I establish will work with any app. However, it may take a while for any signal to be found. Should I be limiting my BAND settings, or allowing it to run on Auto/Auto?
Click to expand...
Click to collapse
I should add that I've now tried:
Ruu_Signed_Duttys_WM6.1_5.2.19700_Hybrid_V2_1_65.14.06_CubeV2_
Ruu_Signed_Duttys_WM6.1_5.2.19700_Hybrid_V2_1_65.14.06_No_CubeV2_
Using radio 1.65.14.06 here in San Francisco I get only EDGE, with a little triangle that I assume indicates that it's roaming. Roaming here, where I used to get very fast HSDPA? What on earth is wrong with my poor Tilt?
Ditto for 1.64.08.21 with Dutty's ROM above. Though with that radio I used to get better performance (i.e. no roaming) from another ROM.
Side question: I continue to see TNT's logo when I restart my Tilt, despite re-flashing both the radio and the ROM several times. The radio version changes, but the TNT logo sticks around. I've also done a hard reset after flashing these ROMs. Any help?

Just a silly idea...
I had the same problem. The login (username and password) was wrong. in fact, the password from the modem account...

StealthNet said:
Just a silly idea...
I had the same problem. The login (username and password) was wrong. in fact, the password from the modem account...
Click to expand...
Click to collapse
Not a bad idea at all. However, I've tried lots of combinations and I don't think the password is the issue.
I found the ROM I used a while back that used to give me lightning-quick connections: XDA Live 1.2. I re-flashed to that one (along with the 1.27.14.09 radio it came with). It immediately gets full bars of 3G (the "H" icon is still disabled in the registry, I believe), but I'm unable to (1) get anything other than EDGE to connect to GPRS and (2) unable to place/receive any calls while it's on 3G mode. If the signal gets weak enough to drop to E, I can make/receive calls.
This is worrisome because that ROM/Radio combination used to work great for me. Is it possible that something on my account was altered at some point, preventing me from accessing proper 3G? Even if that were the case, why would that prevent my voice calls from going through?

chaosniner said:
Not a bad idea at all. However, I've tried lots of combinations and I don't think the password is the issue.
I found the ROM I used a while back that used to give me lightning-quick connections: XDA Live 1.2. I re-flashed to that one (along with the 1.27.14.09 radio it came with). It immediately gets full bars of 3G (the "H" icon is still disabled in the registry, I believe), but I'm unable to (1) get anything other than EDGE to connect to GPRS and (2) unable to place/receive any calls while it's on 3G mode. If the signal gets weak enough to drop to E, I can make/receive calls.
This is worrisome because that ROM/Radio combination used to work great for me. Is it possible that something on my account was altered at some point, preventing me from accessing proper 3G? Even if that were the case, why would that prevent my voice calls from going through?
Click to expand...
Click to collapse
Interestingly enough, AT&T's support site recommends using NO username/password, and enabling IP Header Compression.
When I try this, it works on some occasions, but most often I get:
Dialed: wap.cingular
The answering modem has disconnected.

I too am having a similar problem. I updated to Dutty's and Laurentius's new roms and have been having the same problems.

under connection settings for selected networks chane from my isp to media net.
also some roms don't have att connection settings built in so u might have to install them using a cab.

A-GPS -- Why does it make everything worse?

Isn't A-GPS supposed to be a good thing? My experience with it so far shows navigation programs losing GPS connection frequently and no speed up in getting a GPS fix.
Am I missing something here? Is A-GPS in Diamond broken? Has anyone been able to make it work like it's supposed to?

aydc said:
Isn't A-GPS supposed to be a good thing? My experience with it so far shows navigation programs losing GPS connection frequently and no speed up in getting a GPS fix.
Am I missing something here? Is A-GPS in Diamond broken? Has anyone been able to make it work like it's supposed to?
Click to expand...
Click to collapse
How do you even turn it on?

How do you come to the conclusion the A in A-GPS is the culprit here?

I have the same problem. When I enable assisted GPS in advanced config, both IGO8 and TomTom losing GPS-signal frequently. Disabling assisted GPS makes the problem disappear and the GPS works again.

Jin187 said:
How do you even turn it on?
Click to expand...
Click to collapse
use schap's advanced configuration.

peterlan said:
I have the same problem. When I enable assisted GPS in advanced config, both IGO8 and TomTom losing GPS-signal frequently. Disabling assisted GPS makes the problem disappear and the GPS works again.
Click to expand...
Click to collapse
you are not the only one.

ljames28 said:
How do you come to the conclusion the A in A-GPS is the culprit here?
Click to expand...
Click to collapse
I turn it on using Advanced Config and GPS performance takes a sharp turn towards terrible...
I turn it off and GPS improves considerably.
Shoouldn't it be the other way around? I mean... A-GPS is Assisted GPS, right? Or is it Awful GPS?

aydc said:
I turn it on using Advanced Config and GPS performance takes a sharp turn towards terrible...
I turn it off and GPS improves considerably.
Shoouldn't it be the other way around? I mean... A-GPS is Assisted GPS, right? Or is it Awful GPS?
Click to expand...
Click to collapse
I guess you get it right buddy AGPS= Awful GPS

aydc said:
Isn't A-GPS supposed to be a good thing? My experience with it so far shows navigation programs losing GPS connection frequently and no speed up in getting a GPS fix.
Am I missing something here? Is A-GPS in Diamond broken? Has anyone been able to make it work like it's supposed to?
Click to expand...
Click to collapse
Look, A-GPS you know what it is. To make it work, you have to use service providers software 'cause it works from cellular towers rather sat. itself.

Unless your provider support A-GPS you can`t get any benefit from it. That`s all.

I can use A-GPS here and get a fix very quickly - even inside a building so it is very useful for me. I haven't had any drop out issues either.

is there any particular service providers that it works well with?

First time i turned on A-Gps and when i first used tomtom the delay was huge and was always loosing signal...then i discovered that was A-Gps too... i didnt know it was provided by the mobile service...

Tom Tom Only For GPS Not For A-GPS

bwfcmadlad said:
is there any particular service providers that it works well with?
Click to expand...
Click to collapse
You gotto check with the provider in your country. Check the provider you with. Check on there website too. Good luck.

AGPS Help

I was trying to look around but could not find an answer.
I am on the Sprint stock ROM.
The device comes with AGPS disabled. It can be activated by downloading cabs from this forum as well as registry hacks and Advanced config tool from XDA forum.
But can I activate it from the stock software, without any hack or downloads? The devices I used before (BB, iphone) would enable AGPS by default, so that even if there is no satellite signal (indoors), you can still get approximate location from the cell towers.
I cannot figure it out for the HTC. Why do they disable it by default?
Any ideas?
Thanks.

question abour NO

hi im waiting my new nexus one, as a posted before in general but before comes i want ask some questions. im reading about ROOT, and so on but i cant find how disable 3G, and disable AGPS since at the moment i dont have data plan, i will upgrade in couple of months because i was keep my lg incite and internet or NO and wait a little to upgarde 3G network, so im wonderin its anyway or guide oto turn off AGPS?and 3g?well and i guess if i didint configure grps i dont have worry about gprs but yes for 3g and AGPS any thoughs?sorry i searched and couldnt find im new on NO LOL i dont even have it yet xD
*waiting*
and i read sense desire seems BT isnt working =( so shame
any other good rom? what its your favorite?and its any HTC hero sense?or its the same as desire rom? well thanks a lot i will apreciate the help in this android world =X

You can use QuickSettings from the market to disable mobile networks completely. You can also in the phone settings only allow 2G.
As far as AGPS is concerned it uses Cell Towers to triangulate the location of the phone and doesnt use any Data unless you are using the Maps app which will need to download the map info.

bewA said:
You can use QuickSettings from the market to disable mobile networks completely. You can also in the phone settings only allow 2G.
As far as AGPS is concerned it uses Cell Towers to triangulate the location of the phone and doesnt use any Data unless you are using the Maps app which will need to download the map info.
Click to expand...
Click to collapse
oh thats nice and you sure?since i used garmin once with my WM and AGPS was activated and BAM the bill accoutn was SOOO HIGH :S

theres a disable "use wireless networks" option. the description is "location determined by wifi and/or mobile networks"

bewA said:
You can use QuickSettings from the market to disable mobile networks completely. You can also in the phone settings only allow 2G.
As far as AGPS is concerned it uses Cell Towers to triangulate the location of the phone and doesnt use any Data unless you are using the Maps app which will need to download the map info.
Click to expand...
Click to collapse
That's not how AGPS works, it does use data, albeit a tiny amount. It receives info on the location of GPS satellites so it knows what to lock onto.

Rusty! said:
That's not how AGPS works, it does use data, albeit a tiny amount. It receives info on the location of GPS satellites so it knows what to lock onto.
Click to expand...
Click to collapse
omg so i need disable O.O

zen kun said:
omg so i need disable O.O
Click to expand...
Click to collapse
try apndroid on the market
will cut off all data if u tell it too

bigballa said:
try apndroid on the market
will cut off all data if u tell it too
Click to expand...
Click to collapse
yay thanks i want my NO sooon i will tomorrow pay on ebay

ok i got the track number now and seems they send me the NO so im kind excited i want try root after test and maybe desire rom heh but i just want to know
the root its danger? i mean i guess its like linux "hack" to get root acces in exploit or something but never knows, root the device could brick the NO ?or its a low chance