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- 07-27-2006, 01:12 AM #16Intel InsideGuest
Re: 3G phone with good reception?
"but wether the single 850MHz UMTS cell has the same sized foot-print of the
original
850MHz CDMA cell is open to debate..."
As the saying says ... Time will tell
"Paul Day" <[email protected]> wrote in message
news:[email protected]...
> On Thu, 27 Jul 2006 08:44:46 +1000 thegoons may have written:
>> > Yes. 850MHz will propagate further than 2100MHz and Sol's buddies
>> > are putting effort into the deployment because they _need_ it to
>> > meet CDMA's footprint.
>>
>> no they don't. so what if it does not meet cdma footprint. no legal
>> way they can be forced to provide it, apart from a bull**** promise
>> that was given to coonan.
>
> Yes, sorry - you're dead right. They've _promised_ it will meet CDMA's
> footprint. But the Senate Estimates transcripts show there is _nothing_
> mroe than a promise. The government enquired about putting it in a
> contract, Telstra said "Why do we need a contract? We've made a
> promise!" and not much more has happenned that I've seen.
>
> I can't see much reason why they'd save a few bucks by decommissioning a
> CDMA site completely rather than re-using it for UMTS, but wether the
> single 850MHz UMTS cell has the same sized foot-print of the original
> 850MHz CDMA cell is open to debate...
>
> PD
>
> --
> Paul Day
> Web: http://www.enigma.id.au/
› See More: 3G phone with good reception?
- 07-30-2006, 10:00 PM #17Guest
Re: 3G phone with good reception?
Jeremy Quirke wrote:
> <[email protected]> wrote in message
> news:[email protected]...
> >
> > That's an interesting test Paul and you are right- it is strange to be
> > seeing difference in singal level of 18 to 30 dB.
> >
> > A couple of questions- what software were you using on the PC to read
> > the signal strength? Are you also able to see the GSM channel number
> > you are on? (what I'm getting at is that you should be certain that
> > when comparing the phones performance- you should be certain they are
> > all on the same channel.)
> >
> > Also- were the difference similar for the two different operators - or
> > just one?
> >
> > Fred
> >
>
> It's possible he was looking at C1/C2 values, which are on a logarithmic
> scale and derived from RLA but also depend on BCCH parameters which can vary
> from cell to cell (particular GSM900 vs GSM1800).
The two devices are probably on different BTSs. 30dB is a masssive
difference - no way there could be that much difference in sensitivity.
- 07-30-2006, 11:51 PM #18Guest
Re: 3G phone with good reception?
Paul Day wrote:
> On 25 Jul 2006 06:10:26 -0700 [email protected] may have written:
> > A couple of questions- what software were you using on the PC
>
> It was done using a program called BluePhoneElite under Mac OS X. It's a
> Bluetooth mobile utility with modular mobile configuration so the
> program knows how to query each model for SMSs, signal strength,
> converting signal strength to dBm etc.
I would like to run this same test using some LG UMTS phones to find
out how they compare for signal quality to a Nokia 2G. But I don't
have a Mac.
Can anyone suggest some software for the PC that does this? Preferably
free software
Cheers,
Jason
- 07-31-2006, 03:05 AM #19John HendersonGuest
Re: 3G phone with good reception?
[email protected] wrote:
> I would like to run this same test using some LG UMTS phones
> to find out how they compare for signal quality to a Nokia 2G.
> But I don't have a Mac.
>
> Can anyone suggest some software for the PC that does this?
> Preferably free software
You could fire up a Hyperterminal session and use the standard
cellular signal quality query command
AT+CSQ
interactively. You'll get a result like "+CSQ: 19,99". The
figure to the left of the comma is RSSI (signal strength). To
convert it to dBm, double it and subtract 113 from it. So in
this example, I'm seeing -75 dBm ((19 * 2) - 113).
You can download a copy of 3GPP technical specification 27.007
and use further netmonitoring-type commands like "AT+CREG"
(check syntax variations) to read off the location area code
and serving cell ID number.
John
- 07-31-2006, 03:21 AM #20AliceGuest
Re: 3G phone with good reception?
[email protected] wrote:
> I would like to run this same test using some LG UMTS phones to find
> out how they compare for signal quality to a Nokia 2G. But I don't
> have a Mac.
Or a brain, for that matter.
>
> Can anyone suggest some software for the PC that does this? Preferably
> free software
Just save your lunch money from school, kiddo.
:-)
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