3G coverage detection using Publish and Subscribe

[david.reynolds1]

Does anyone know how to passively detect 3G coverage using the Publish and Subscribe API (ie without connecting). I know how to do it with GPRS but there doesn't seem to be an equivalent TUid for 3G.

[ajay.pandey]

hey David,
I want to detect passively the GPRS connection, can you please guide me on this, how to acheive it.

Cheers!
Ajay

[er_benji]

Hi,

i only need to know if i have GPRS coverage, although i had to open a data connection.

Thanks,
Benji.

[david.reynolds1]

For S60 2nd edition:

Reproduced from rbelwal's post of 2003-06-02
--------------------------------------------

"For Network Status or GPRS coverage you may try to use RSystemAgent API and following UIDs.
Try this sample code

const TInt KUidGprsAvailabilityValue = 0x100052DA;
const TUid KUidGprsAvailability = {KUidGprsAvailabilityValue};
enum TSAGprsAvailability
{
ESAGprsAvailable,
ESAGprsNotAvailable,
ESAGprsAvailabilityUnknown
};

Network connection status
const TInt KUidGprsStatusValue = 0x100052DB;
const TUid KUidGprsStatus = {KUidGprsStatusValue};
enum TSAGprsStatus
{
ESAGprsUnattached,
ESAGprsAttach,
ESAGprsContextActive,
ESAGprsSuspend,
ESAGprsContextActivating
};"

To use this with the P&S API you need to use the KUidSystemCategory category so something like:

TInt result,
TInt error=RProperty::Get(KUidSystemCategory, KUidGprsAvailabilityValue, result);

Where result will hold a value from the TSAGprsStatus enum.

Note that the TSAGprsStatus enum is different for S60 3rd edition.

[alokkumarsingh]

hey David,
thanks alot for a valuable input, did u able to find a way to detect passively 3G coverage?

thanks
ajay

[er_benji]

Hi,

i only need to know the GPRS availability but it doesn't work in Symbian 6.1.

My code is (in an active object):

RSystemAgent iSysAgent;
TSysAgentEvent iSysAgentEvent;
const TInt KUidGprsAvailabilityValue = 0x100052DA;
const TUid KUidGprsAvailability = {KUidGprsAvailabilityValue};

ConstrucL()
{
User::LeaveIfError(iSysAgent.Connect());
iSysAgentEvent.SetRequestStatus(iStatus);
iSysAgentEvent.SetUid(KUidGprsAvailability);
iSysAgent.NotifyOnEvent(iSysAgentEvent);
}

RunL()
{
TInt resStatus = iSysAgentEvent.State();
}


Thanks for your help.
Benji.

[er_benji]

Hi,

it works "correctly" but it returns always ESAGprsAvailabilityUnknown.

Does someboby know why can be?

Thanks.
Ben.

[er_benji]

Hi,

it works correctly only when GPRS connection is configured as "When available" but not as "When needed".

Thanks,
Benji.

[mimimi]

Hello,

Have you secceeded to get the GPRS coverage status?
I am also trying to get this information but no success.
I need to know the GPRS coverage information before trying to make connection. I tried to use RProperty class and RConnectionMonitor. Both didn't send back the expected status. I am wondering if someone could give me some tips in this matter.

Thanks a lot.
Mimi

[symbianyucca]

Have any of you tried using RConnectionManager, I'm rather sure you could get the 3G network status with it, Here in paradise they are a bit slow, thus no 3G available but I have used the API to determine if I'm having EDGE.

ucca

[ronaldwh]

Hallo Symbian Yucca,

I've tried to find the RConnectionManager in the SDK, but I didn't find it anywhere. Is RConnectionManager is a NonPublic API?
I use S60 2nd fp2.

Thanks!

[symbianyucca]

Nope, I just wrote the name from my faulty memory, the real name for the API is of course : RConnectionMonitor... sorry about any onconvenience caused..

yucca

[mimimi]

Hello,

Thanks Yucca,
I looked into my code closely. Seems RConnectionMonitor works. Just I was testing in a wrong condition. :-(

[er_benji]

Hi,

Does anybody know which is the UID for getting the 3G signal level (coverage) in S60 3rd?
or at least, how can i find out it?

Thanks in advance.

[ronaldwh]

Hallo all,

Why RConnectionMonitor::GetConnectionCount() always give me 0 connection number? Is there somthing that I miss?
I use RConnectionMonitor::ConnectL() just before I call the GetConnectionCount() function.