Database Develop

Tilt GPS VS SIRF III [pics]

I thought I'd do a signal comparison with the new tilt. I used TomTom gps viewer for ease of use.
Here are my results.
Patio area:Fairly covered, narrow view to N and E 45* at best, mostly 80*ish
SIRFIII
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Tilt on Patio: NO FIX
Next I went to the car. Its in parking lot surrounded by buildings, about 45* clear on 3 sides, 60* on one side....
SIRFIII At sunroof
Tilt at sunroof
I used the sunroof because I typically put the SIRFIII receiver in the sunroof slider for best signal, this is obviously not possible with the tilt so I also tested at the console...
Next post....Pic limit...

SIRFIII at console
Tilt at console
Notice the Tilt at sunroof is nearly = to SIRFIII at console...
Now I tried one to test the SIRFIII's capabilities.
Inside garage with door closed on bottom floor of 3 story building on the console....
I couldn't believe it still got a fix on there, I'm amazed
And of course
Tilt in garage on console...NO FIX (duh)
If anyone else has results/input please do add.

I am inside the building, and still get result!
randomtask16 said:
I thought I'd do a signal comparison with the new tilt. I used TomTom gps viewer for ease of use.
Here are my results.
Patio area:Fairly covered, narrow view to N and E 45* at best, mostly 80*ish
SIRFIII
Tilt on Patio: NO FIX
Next I went to the car. Its in parking lot surrounded by buildings, about 45* clear on 3 sides, 60* on one side....
SIRFIII At sunroof
Tilt at sunroof
I used the sunroof because I typically put the SIRFIII receiver in the sunroof slider for best signal, this is obviously not possible with the tilt so I also tested at the console...
Next post....Pic limit...
Click to expand...
Click to collapse

Penske MB said:
I am inside the building, and still get result!
Click to expand...
Click to collapse
Yea thats what I keep hearing, but I have to be away from buildings out on the clear open to get a fix though...hmmm

randomtask16 said:
Yea thats what I keep hearing, but I have to be away from buildings out on the clear open to get a fix though...hmmm
Click to expand...
Click to collapse
Same here. =/

me too. I get no fix inside my 2 story house with no trees around. I lose fix even inside a train that is travelling through a wide open area.

2 stories above me.
For me it basically works every where I have tried. Locks under 5 seconds. Used to have the Ipaq 6945 and took almost a minute to lock and never got a lock inside buildings. I do know know how well this compares to external ones since I never got the chance to try any. Overall very satisfied.

I have never got a fix inside a room and I think this is quite obvious.
And basically I dont really care, why do I need to use GPS inside a room?
The thing that really important for me:
- How is it perform? Do you get signal lost quite often?
No, I dont. I have the same experience when using my old Magician+BT-338 Sirf III external GPS.
In some rural area in Belgium I noticed the Kaiser GPS has only 1 bar of signal, and it worked fine.
- How fast is it to get satellite fix after exiting a tunnel?
Again, same experience with my old SirfIII GPS.
- How fast is it to get the first satellite fix after turned on?
Very fast, between 5 - 30 seconds The same experience with my old SirfIII GPS.
Well, at least, thats my own experience.
For sure, SirfIII GPS could be more powerful than the NMEA of Kaiser, but the NMEA is powerful enough
At first I was quite skeptical about this NMEA vs SirfIII, but not anymore.
Next week, another test ... 450 km driving to Germany

gogol said:
I have never got a fix inside a room and I think this is quite obvious.
And basically I dont really care, why do I need to use GPS inside a room?
The thing that really important for me:
- How is it perform? Do you get signal lost quite often?
No, I dont. I have the same experience when using my old Magician+BT-338 Sirf III external GPS.
In some rural area in Belgium I noticed the Kaiser GPS has only 1 bar of signal, and it worked fine.
- How fast is it to get satellite fix after exiting a tunnel?
Again, same experience with my old SirfIII GPS.
- How fast is it to get the first satellite fix after turned on?
Very fast, between 5 - 30 seconds The same experience with my old SirfIII GPS.
Well, at least, thats my own experience.
For sure, SirfIII GPS could be more powerful than the NMEA of Kaiser, but the NMEA is powerful enough
At first I was quite skeptical about this NMEA vs SirfIII, but not anymore.
Next week, another test ... 450 km driving to Germany
Click to expand...
Click to collapse
Nice! u goin for vacay or shopping?

What's the difference?
Definetely holiday + shopping.
I've never been there, so I am not sure if I am gonna like it though.
ghaith_d said:
Nice! u goin for vacay or shopping?
Click to expand...
Click to collapse

I find my Kaiser VERY slow to get a lock. Even outside with no obstructions. More than two or three minutes in most cases.
I'm comparing to a Garmin Nuvi 660...
Only software I have tried is the GPS photo and Google Maps.

The Kaiser GPS is A-GPS, meaning it can use mobile phone signals to aid a fix.
Personally, going from a bluetooth sirfIII to the kaiser GPS, I don't notice a difference in accuracy in day-to-day usage.
Fix time, however, with the Kaiser, is much, much quicker. 5 seconds max usually.
sgt-spam said:
I find my Kaiser VERY slow to get a lock. Even outside with no obstructions. More than two or three minutes in most cases.
I'm comparing to a Garmin Nuvi 660...
Only software I have tried is the GPS photo and Google Maps.
Click to expand...
Click to collapse
Have you updated the GPS quickfix software? This downloads the satellite positions in advance so that it does not have to download them from the satellites, which is low bandwidth and subject to interference. Even if you could see every satellite, you won't get a "lock" until it knows where the satellites are and can do the triangulation.

I have always been able to get a fix inside my living room. The only place (inside) where I have not been able to get a fix is at my workplace, but, then again, I don't get cellphone signal at workplace either.

It seems we either had a poor experience with it, or a great one. I'm using the ATT ROM.

AGPS (Assisted GPS) is disabled in AT&T's ROM. Can someone with the HTC ROM check HKLM\Software\HTC\SUPL AGPS\EnableAGPS?
On the AT&T ROM EnableAGPS is disabled, or set to 0 and the GPSMode is 2. What are these values on the HTC ROM?

txcas said:
AGPS (Assisted GPS) is disabled in AT&T's ROM. Can someone with the HTC ROM check HKLM\Software\HTC\SUPL AGPS\EnableAGPS?
On the AT&T ROM EnableAGPS is disabled, or set to 0 and the GPSMode is 2. What are these values on the HTC ROM?
Click to expand...
Click to collapse
On the HTC ROM the EnableAGPS is disabled too (set to 0) and GPSMode is 2 too...
Seems Assisted GPS are disabled in HTC too. Can be enabled changing the EnableAGPS?
What are the advantage of using instead of QuickGPS?
Thanks.

AGPS will help get your location using the cell network. I will enable it and see if it help getting GPS locks while indoors.

txcas said:
AGPS will help get your location using the cell network. I will enable it and see if it help getting GPS locks while indoors.
Click to expand...
Click to collapse
Did it help at all ? Very intresting

It did not help at all. The server configured in the registry is for Orange in France. Unless we find one server that works for us in the US, I don't think we can use this feature.

txcas said:
It did not help at all. The server configured in the registry is for Orange in France. Unless we find one server that works for us in the US, I don't think we can use this feature.
Click to expand...
Click to collapse
Yes, you are right, this is the info for the serverIP in my HTC spanish ROM
Nombre: LNeuilly-152-21-109-109.w193-253.abo.wanadoo.fr
Address: 193.253.42.109
I'll give a try and see if get data indoor...

Still can't GPS to work... can anyone help?

I've just got the Vario III new from T-Mobile UK, and I just can't the GPS get to receive any signals. I guess there is no "in box" way of testing the GPS, so I downloaded MS Live Search, and in there the "Centre on GPS". Previously, I set the hardware to COM0, 4800 Baud, autostart GPS by appilcation. In Live Search, I equally set it to COM0.
When is press the "centra on GPS", the righ hand side orange LED starts blinking, and the message inside Live Search is something like "retrieving GPS datat", but that's it. Nothing more happens.
I've also tried it with TomTom, but no result here either, other than the message "invalid GPS data".
I've called T-Mobile support to find out if there's anything on their side that needs doing, but apparently not.
So, I'm pretty stuck. Does anyone have an idea what I could try? Thanks!

First off, never ever go into the External GPS settings in the control panel. The general consensus around here is that it almost always requires a hard reset after messing with that. If you did, make sure it's set to COM4, 4800 baud.
Make sure your apps are set to COM4, 4800 baud. If that fails, a hard reset may be in order.
Why did you set it to COM0? Did someone tell you to do that?

I set it to to COM0 just to try SOMETHING.
I guess a hard reset is in order
So I just leave the GPS settings be and don't even touch them, yes?

Ok, so I've just done a hard reset.
The one and only thing I've done is install Live Search.
In the prefs of it, COM4 was automatically selected.
Hit "centre on GPS", with absolutely no reaction other than "Getting GPS position".
Any further thoughts? Hardware fault? Software issue?

The signal from GPS satellites is very low powered. ANY obstructions to the sky can cause a failure. My handheld Garmin GPSs and my Tilt will not get a lock in the house. Outside; buildings, trees, land masses and clouds all prevent a good lock. From my experiences with the Tilt, I have to get out into the open and wait 5-10 minutes or more for a lock.

Download the new google mobile maps and try that. It seems to get a fix quickly and doesnt time out as quickly as the older version (and some other gps enabled apps).

Cool, I got it to work. I left the device outside on the balcony for 10 minutes, and Live Search did lock in on me.
I now downloaded Google Mobile Maps, but couldn't locate a GPS function (I downloaded it from their website). Am I blind?

The thing that worked for me was to install GPS Viewer (freeware, you can Google it) and then open GPS from there. It takes about a minute to connect but then it stays on and interfaces with Tomtom very well. Prior to running it, please also download and run QuickGPS (it comes as loaded software with Kaiser, you may have to download it also as freeware, helps keep the connection steady; it is advised to download QuickGPS once a week, this is as long as its effect lasts, don't know why). The combination of QuickGPS and GPSViewer works very well.

naujoks said:
I now downloaded Google Mobile Maps, but couldn't locate a GPS function (I downloaded it from their website). Am I blind?
Click to expand...
Click to collapse
Menu | Track Location

Hmm no, I dont have that menu item. Maybe I got an older version of it after all?

It's "Menu | Show My Location" on mine.
BTW, I saw a trick on another thread which worked very well for me. Enable the GPS Photo option (by using Kaiser Tweak or tweaking the registry) and open that first. It seems to get a fix very quickly. Once it's got one, you can close it and open any other GPS program like google maps and it tracks instantly. I also have QuickGPS installed and updated so that probably helps too.

After hard resetting twice, I have never run the QuickGPS program and I get a fix every time in less than a minute, even inside my house (by a window).
One program I highly recommend never using until it is updated is Map4PDA. It killed my GPS, requiring a hard reset.

Download GPS Test, run and confirm signal strength by satellite. That should solve your issue or at least answer the question of functionality.

GPS

Hi.
I know this might already be confirmed but I did a simple logging on com4 and found that the gps i really there. Will go out later today and test it again but this time outside. I attach the logging to.
One more thing, it´s kinda strange the gps is always on, atleast htc could disable the gps for real if they´r not gonna use it. The battery time would increase alot.

GPS is enabled, how more i read about it it has to do with something like no antenna is connected. When i use the GPS test tool it finds a GPS on com4 and have one sat in screen.

lol
to cold here to go outside, put mine by the window the other day and got one sat with GPS test.

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Here is mine, I found also one sat, it was inside the house before the window. GPS is working but its no sensitive enough, could be no antenna.

Where can I get the software to access the GPS? Sorry for the simple question, I've been looking around online and can't find it.

Lurchy24 said:
Where can I get the software to access the GPS? Sorry for the simple question, I've been looking around online and can't find it.
Click to expand...
Click to collapse
http://www.smartphone.net/software_detail.asp?id=3170

Thanks. I only get one satellite as well.

Im very happy!! 1 sat. is better than no sat.
hope we can get GPS running for real.. soon

As jockyw2001 also wrote: We need pics of the inside of S730, both pre-production (with antenna) and current production model/or service manuals of Kaiser and s730. Then we will be able to see how the antenna looks like and where is it connected.
Idea!!
Is it possible to make (by HTC) the hardware switch on s730 board, which is disconnecting the antenna?
Then, the antenna could exist and the new ROM could enable this feature in future.

gps
Is there anyone here in the forum that actually has GPS working and getting a few sat signals etc.
it will be intresting to see if there is any difrerences in there registry. If someone has it working can they post the reg. info so we can compare.

ToneBank said:
One more thing, it´s kinda strange the gps is always on, atleast htc could disable the gps for real if they´r not gonna use it. The battery time would increase alot.
Click to expand...
Click to collapse
GPS is not always on. It has some power saving timeout and 'wakes up' when communication port is openned and GPS data are read.
On the COM4 is not directly GPS, but GPS intermediate driver (someone knows it from PPCs), that allows more application can read from one COM port.

oh
something else i thought of is there a working driver for the gps on the phone or not? Im not really sure if it needs one.
Also i found a pdf of the msm7200 chipset. not that much to look at but you can see the gps etc and how its wired and i presume an antena at the end.
Follow the link http://www.3gchipsets.co.kr/download_library/pdf/msm7200_chipset.pdf

Here is a s730 with GPS:
http://forum.xda-developers.com/showthread.php?t=337796&page=2

yes it was a preproduction model. In the official models its not working. We need to find out what is difference between both models

I am still new to the smartphone world so I cannot be of too much help, but this is what i've seen thusfar;
With GPS Test I have gotten sats on com 2,4 and 7, every satellite I pick up is at 0 on the little map locator screen. The GPS tool never gets past GPS starting up, stays fixed at 1D and no other info gets downloaded.
My testing has been in very cloudy weather over the past few days here in Texas, today though its nice and clear so I hope to get more done. I played a little with the baud rate but nothing came of it. When I did pick up a sat it was gone in 10 - 20 seconds. I did at one point pick up two at once, both in the same direction. Overall I have seen 6 different satellites, only 2 at once, and all from the same location. Could be thats the only open direction I had for visibility at the time.
I do remember reading somewhere that the GPS chip had a small antenna actually built onto it. Hopefully we can get it working soon.

10332007 said:
I am still new to the smartphone world so I cannot be of too much help, but this is what i've seen thusfar;
With GPS Test I have gotten sats on com 2,4 and 7, every satellite I pick up is at 0 on the little map locator screen. The GPS tool never gets past GPS starting up, stays fixed at 1D and no other info gets downloaded.
My testing has been in very cloudy weather over the past few days here in Texas, today though its nice and clear so I hope to get more done. I played a little with the baud rate but nothing came of it. When I did pick up a sat it was gone in 10 - 20 seconds. I did at one point pick up two at once, both in the same direction. Overall I have seen 6 different satellites, only 2 at once, and all from the same location. Could be thats the only open direction I had for visibility at the time.
I do remember reading somewhere that the GPS chip had a small antenna actually built onto it. Hopefully we can get it working soon.
Click to expand...
Click to collapse
could you find out where you have read it?

This is one place, I cannot find the other place, it was their blog or one of those other sights that has a blog in playing with the pre production unit they talked about its processor and GPS... I'll try to dig it up.
Getting really annoying having the tool stay in "GPS starting up" mode none stop. Need to find the HTC version that the pre prod. phones were using or figure out how they nerf'd it.

Yes, I think I saw the same blog forum, but this blog is out now :/.
http://superiorgadgets.blogspot.com/2007/09/htc-s730-worthy-successor-of-popular.html

But of course the blogger still exist on http://superiorgadgets.blogspot.com/

http://forums.thoughtsmedia.com/showthread.php?t=23205
Post #7.
Has anyone tried to get a pre-production rom?

How to activate GPS? [TyTn II]

Hello all,
I've been looking for a way to start my GPS when I want it, I want the red led to blink at me!
The only way I can get it to work is with googlemaps or tomtom, that software then magicly activates the module for me. Why can't I do that, I am your master little computer!
Also if I try other software like nav4all and amazegps, I just get the message: No GPS device found. It's driving me crazy.
I would be very gratefull if someone could please tell me where to find the switch, button to activate the GPS module when I want it on. And maybe also tell what I am doing wrong in relation to other software that tells me I do not have GPS.
Thanks allot!
Loeder

Compatible software switches it on whenever you wish master.
Loeder said:
I've been looking for a way to start my GPS when I want it, I want the red led to blink at me!
Click to expand...
Click to collapse
Whats wrong with the orange flashing light you get with Tomtom working? As far as I know, without any jiggery pokery installing cabs, the red light is reserved only for low battery or problems so if you're really keen to have a flashing red light, let the battery discharge below 5% (that ought to give you a few mins usable GPS usage).
The only way I can get it to work is with googlemaps or tomtom, that software then magicly activates the module for me. Why can't I do that, I am your master little computer!
Click to expand...
Click to collapse
You can if you learn programming skills and write a module to load and use the devices GPS driver. These products you have that don't detect the TyTN IIs GPS capability don't have that built in, hence they cant 'see' any GPS. A simpler way is just to write to your preferred GPS software provider and ask them to make it compatible with your device or buy/use something that already is fully compatible.
I would be very gratefull if someone could please tell me where to find the switch, button to activate the GPS module when I want it on. And maybe also tell what I am doing wrong in relation to other software that tells me I do not have GPS.
Click to expand...
Click to collapse
I trust the above addresses this (although I suspect your usage of 'module' above means this is no surprise to you).

At least the MWg Zinc II has it built-in to the COMM MANAGER - not that I would see a need for it since good application should be able to find and use the GPS module anyway, however, it tells me that there should be a way in WM to turn it on manually!

Loeder:
Most GPS apps have settings menu where you can set the GPS settings, for the Tilt/TyTN II/Kaiser, COM 4 and 56000 always worked for me.
Flying Kiwi:
The red light Loeder is talking about is the "GPS Active" light, not the "low battery" light.

Thanks for the help!
I actually installed some sort of device driver that made my GPS crash everytime, now a hardreset saved me but the good thing is that I can now run (http://www.amazegps.com/welcome.php) free navigation that does the job same as TomTom (to think i almost spent €50,-).
Still, it is ... quit annoying that they did not put a simple button in the comm menu or otherwise...
TyTn II has been great sofar.
Loeder

GPS active light is orange, not red.
AthenaLod said:
Flying Kiwi:
The red light Loeder is talking about is the "GPS Active" light, not the "low battery" light.
Click to expand...
Click to collapse
That one is orange - check it and you'll see

Flying Kiwi said:
That one is orange - check it and you'll see
Click to expand...
Click to collapse
i know, that's what he meant, let's not fight over it.

Loeder said:
Thanks for the help!
I actually installed some sort of device driver that made my GPS crash everytime, now a hardreset saved me but the good thing is that I can now run (http://www.amazegps.com/welcome.php) free navigation that does the job same as TomTom (to think i almost spent €50,-).
Still, it is ... quit annoying that they did not put a simple button in the comm menu or otherwise...
TyTn II has been great sofar.
Loeder
Click to expand...
Click to collapse
Yes but when you spend that €50 you get maps loaded for your location, so if you don't have a 3G or Data connection when your trying to figure out where the hell you are you can at least see roads to travel on. This is the one thing that bugs me, I don't live in the city so when I'm out "Joy Riding" and want to find where I am going sometimes I don't have a cell signal so my phone is useless with Google or Live or this amaze program, Plus I purchased a version of streets and trips but of course they are not nice enough to include a WM version with your laptop version so now if I want that on my phone i have to buy it AGAIN... I may go that route since looking on Tom Tom even if I was able to install the V7 cab they don't sell US&Canada maps... Or at least I can't find where to buy them from.
Scratch that... Microsoft doesn't have a version to go with streets and trips since the 05 version I think... so Now I'm limited to navigation programs that require a data connection... WTF... Unless someone can tell me where TomTom is hiding their US maps on the map purchase page for Navigator 7

If you want to turn your GPS on, then use a little app called GPSViewer or VisualGPSCE, both are freeware and attached for your convenience.

There is another application called GPSTest.exe, it is attached.

Turning it on does not mean it can automatically be used
Irrespective of whether a utility is used to turn on GPS, I don't imagine it would enable a non-compatible package that can't initialise GPS itself, to work with the TyTN II though.... or will it?

MACkjam said:
If you want to turn your GPS on, then use a little app called GPSViewer or VisualGPSCE, both are freeware and attached for your convenience.
Click to expand...
Click to collapse
Thanks MACkjam, another little usefull apps, all i knew was just GPSTest and it's incridible.
My main app for GPS was still Garmin XT, free map available for Indonesian region.

I would once again say thank you for all the help, and the programs you posted allong with your replies.
I hope this thread will be helpfull to others aswell.
@Berretafreak: I have never not have a signal sofar in europe, but I'm sure there are places, even in europe, that do not provide a decent signal. Also I have a regular TomTom .
Loeder

The zinc ii does NOT show gps and does not have the traditional mgr. It says wireless.
BTW tt7 nav with na maps is available and works perfect.
I have tried some com cabs but they do nada.
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I have only a 300min plan and nothing more.

MACkjam said:
If you want to turn your GPS on, then use a little app called GPSViewer or VisualGPSCE, both are freeware and attached for your convenience.
Click to expand...
Click to collapse
great u r top man! worked 4 me

Have we been tricked on AGPS by SE?

The X1 has been marketed and advertised as having aGPS but thus far it seems no one can get it working. It seems SE no longer maintains a working SUPL aGPS server. The server found in the settings is in the 10.1.x.x IP range which is NOT a real server. It is a private IP (look up network address translation on wikipedia to see what that means). I am tired of 5-10 minute locks sometimes and terrible performance in a city with tall buildings. I am getting ready to visit NYC and this will probably render my GPS useless. When I visited Georgetown which isnt even as dense, the GPS went nuts. Do you think we can do something about this? Does anyone know any public SUPL aGPS servers? Also can someone with a completely stock X1 ROM post the contents of the following reg key:
[HKEY_LOCAL_MACHINE\Software\HTC\SUPL AGPS]
Please post your ROM version if you do. Thanks!
*edit. Please read!*
Ok, let me throw in a little explanation to aid this conversation. A stand alone GPS works by listening to satellite signals and calculating your distance from each satellite it hears. In order for this to work the gps reciever needs to know where in the sky the satellites are. The satellites broadcast what is called ephemeris data that contains this info. This is why your initial lock can take quite some time. If you start listening in the middle of the broadcast you must wait for it to start again. If you loose signal during the broadcast you need to wait for it to start over. Once you have the ephemeris data you can begin working on a fix.
QuickGPS is NOT aGPS. What QuickGPS does is download the ephemeris data from the internet so that you dont need to download it from the satellites. This can speed up your initial lock.
aGPS is another thing entirely. It is not a carrier service. All you need for aGPS is a GPS reciever and an internet connection of ANY kind and an aGPS server to connect to. You could use wifi. Since you have a phone though and you are moving it makes sense to use a cellular connection. In this case your carrier can only charge you for data transfer. Lastly, your carrier may maintain their own aGPS server. aGPS has several functions. First it detects the cell sites you are connected to to get a rought idea of where you are (like google's mylocation feature). Now that you know where you are you know which satellites to look for (since aGPS also does have ephemeris data). Once you start recieving GPS signals, rather than calcutaing a fix yourself you can send the info about the signals to the server which has a much more powerful CPU. It will calculate a fix for you and send you your position.
Another thing. GPS software does not need to be in any way aware of aGPS or QuickGPS. These are both utilities used directly by the GPS reciever itself to help get a fix. GPS programs use a standard API to get position information from the GPS reciever. How the underlying reciever goes about getting that information is of no importance to the GPS program. Wouldnt it kind of suck if every GPS software had to have its own algorithm for calculating a GPS fix from satellite location data? These are not simple calculations (one of the reasons it is nice to have a server doing the calcs for you). This is why there is an API for this.
Hope this clears up misconception and leads to a more informed discussion of the issue. Posted from my X1 with Opera Mobile 9.7 on my way to NY with CorePlayer playing the music and iGo8 navigating running in the background. I love this phone.

On my X1 with German stock R3A it looks like that:
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aGPS seems to be switched off!? Here has been another discussion about that issue.

From what I know, AGPS is a service provided by your operator. You need to enable it
in "Settings->Phone->Services" to get the right settings. Maybe this IP is just dummy.

is agps the thing used to get a quickgps signal, if so mine works. u have to manually update sometimes (lasts 7 days).
might not be the same thing, not sure

I've been able to update my QuickGPS also with A-GPS turned off - it must have been useless until now...

My X1a (stock NAM R3A) has following values...
[HKEY_LOCAL_MACHINE\Software\HTC\SUPL AGPS]
ServerIP: 10.1.101.63
EnableAGPS: 1
GPSMode: 2
NumberFixes: 999999999
QoSAccuracy: 50
QosPerformance: 89
ServerPort: 7275
TimeBetweenFixes: 1
Click to expand...
Click to collapse

QuickGPS is something the GPS software should use. Enabled or disabled, if iGo8 for example does not use it, it's all the same. And I can't tell for sure if iGo and Garmin are using it.

No offence, guys..
But here we go again, with the a-gps. I wonder why a-gps is mostly discussed and asked by Sony Ericsson users And wonder why just SE users always feel tricked...
1) Let's think.. So with the IP thingy you expect that the a-gps will connect to an internet server, right?
Myself, I've never experienced problems with GPS in X1. Living far away from a crowded city, the reception is fine. And in the city, no problems as well. During AS, it downloads the coords through quickgps and later my GPS gets fixed in about 20s (that's when Tomtom or other GPS app is able to navigate). Of course in URBAN AREAS.
2) if you look here, it has been discussed http://forum.xda-developers.com/showthread.php?t=413893
If you google the ip 10.1.101.63, you'll find that everybody is talking about it almost everywhere, but nobody actualy knows, how the a-gps on HTC should work (coz nobody ever saw it working and people are know poorly about what that really is) - if triangulation or something else..
So no problem at all. Coz triangulation through cells won't help you with navigating at all.
Cheers
edit: sorry for being arsey

where can i find the file to check? my phone is completely standard. is it not possible to have both gps systems turned on and it use what ever is best at the time?

of course it is going to be switched off! Why would it be on if you were not using it!
If you want everything to work 100% properly then use a official rom like me

Use this IP-Adress: 64.14.59.165. (ping supl.nokia.com)
With this I get a lock within 1 second, without in about 10 sec. There isn't any data connection established,
but it seems to use one, if it has been enabled before (only for lock).
So, Basics now
AGPS is not QuickGPS. AGPS uses a database stored on a Internet Server.
It calculates your position by using this triangluar method (the cells of your provider) and can dertermin your position
quite exactly, so the GPS lock duration is reduced dramatically.
The triangluar method just tells the device: you're between those three stations, i.e. in that triangle.
QuickGPS downloads a database that contains the Location of the satellites in
your area, so the GPS device doesn't need to check all stallites, as it just can't connect to some.
This reduces lockup time as well, but won't work anymore if you move about 300km without enabling GPS.
AGPS will work anywhere and is more precise. Combining both brings the most effort.
Hope, this helps

how do i put that ip address in? and where do i have to go to turn on both agps and normal gps at the same time

Use a Registry Editor (for example PHM Registry Editor) and go to this key:
"HKEY_LOCAL_MACHINE\Software\HTC\SUPL AGPS"
There's a picture of it in post 2.
Set "EnableAGPS" to 1 and enter the IP Adress in the field "ServerIP", then restart your device.
With "normal GPS", I thing you mean QuickGPS? Just let it download the
desired data and its done.

comeradealexi said:
of course it is going to be switched off! Why would it be on if you were not using it!
If you want everything to work 100% properly then use a official rom like me
Click to expand...
Click to collapse
Yup. My aGPS has been working from the start.

Diewi: you forgot the server port

Please read the explanation of GPS I added to the first post. It clears up a lot.
Diewi said:
From what I know, AGPS is a service provided by your operator. You need to enable it in "Settings->Phone->Services" to get the right settings. Maybe this IP is just dummy.
Click to expand...
Click to collapse
As explained in the first post this is not necessarily a carrier service but can be provided by your carrier. I did check the settings and did not see it there. Does anyone see aGPS as a service here?
Ganondolf said:
is agps the thing used to get a quickgps signal, if so mine works. u have to manually update sometimes (lasts 7 days).
might not be the same thing, not sure
Click to expand...
Click to collapse
It is not the same. Explained in the first post.
winningblue said:
My X1a (stock NAM R3A) has following values...
Click to expand...
Click to collapse
Thanks!
thelucius said:
QuickGPS is something the GPS software should use. Enabled or disabled, if iGo8 for example does not use it, it's all the same. And I can't tell for sure if iGo and Garmin are using it.
Click to expand...
Click to collapse
No software needs to be aware of QuickGPS. QuickGPS data is use directly by the GPS reciever. Software all use an API to get the GPS position. How the underlying reciever gets that position makes no difference. Software does not need to be aware. QuickGPS is not the issue however. Please see the first post.
More replies later. My turn to drive.

Yeah, in the Service tab there's something called "Location Setting". I don't have this as
well, but there are many users and howtos report this. I think this just with the
expensive providers and contracts. It seems to set agps up automatically. But I'm happy it works without this.
@nevermind: The port is just the default one: 7275

a-GPS is something different.
Start of the GPS is slow for one reason. GPS has to download orbit data from the satellites. There is one 'rough data' package, that contains data for all satellites and is transmitted from all satellites. It should basically tell you 'which satellite is over the horizon at the moment'. That is also the reason you could enter your rough position in the 'cold' boot process. These days GPS receivers have so much channels, it makes little difference, so this function is not present in most todays GPS units.
Anyway, that is just a beginning. Then you have to download precise orbit elements. Ant those are transmitted only by each individual satellite, only for that satellite. It's not much data, few numbers. But there is no feedback, no handshaking, so if there is some error in receiving it, you must simply try again.
Especially in situation like car moving in city, this process can need many retries. Thus it can take long. You can see the GPS is downloading the data from the satellite for example in Garmin XT software. Downloading satellite has empty signal gauge (but corresponding signal strength), downloaded satellite (can be already used) is displayed with full gauge.
So basically .. you wait because you download few numbers from satellites 40.000 km away with no handshake. But wait .. downloading data .. that can GSM network do much better. And that is a-GPS. GPS software simply downloads the precise data for each satellite from webserver. This process can be controlled in QuickGPS app.
This is done in the GPS driver, so the mapping software does not have to have any support.
a-GPS is different then getting location from GSM BTS stations, which only some software supports (like Google maps).
Also a-GPS can indeed broke your fix, especially on Xperia. Sotimes the data from GSM network are downloaded wrong, or are old, no idea .. but if it happens, you loose signal very often (because unit tries to read position of satellites which are not above horizon) and the position may be off. In such cases: try to manually reload data in QuickGPS, or try to disable QuickGPS altogether.

Ah .. actually I may have it mixed .. and this could be Quick gps while a-gps indeed is location from BTS. But then it has nothing to do with GPS accuracy or speed. It will just give you rough location fast. And as far as my Xperia goes, in google maps it works perfectly.

Alright, I get your point, but from what I know AGPS is "better" than using sources like
QuichGPS. It gets your position more precise. Don't know how it's implemented, but this
seems to speed up lockup time, as many articles state it (and from what I experieced).
Maybe it just "validates" the data sent by satellite. But for me it works even without using
sofware that is explecity written to use carrier information (Meaning speedup).
From what I've seen Google Maps just takes the cell you're into and says: well about 5km there
you are. That's not AGPS from what I know.
But from the basic things you said, you're right.
Basicly I gotta say it works and is better than any other solution. Perhaps an
expert in GPS issues can clear this.
So, as a summary one can say the better the device knows where it is, the
faster the lockup is.
This discussion is getting more and more theoretical, isnt't?
What I advice everyone who is willing to use AGPS is to take the Registry
settings I posted above.
P.S: Thaks Dr.Sid for your input