- This topic has 13 replies, 1 voice, and was last updated 12 years, 4 months ago by Pix.
15th July 2009 at 05:19 #57960User_2010Guest
I have one question about frequency scan with TEMS. During scan phone works as a scanner. If you are in the border between two countries (operators use the same frequencies of the both countries). For example I put to phone SIM of my operator and start to scan. I think I will see the strongest signal (selected frequencies), doesn’t matter from which operator. Right or not??? Even MCC & MNC selected.
Please confirm, am I right in this situation or not???15th July 2009 at 08:21 #57961PixGuest
The TEMS scanner just scans, no matter which MNC or MCC.
I think it even works without the SIM card, doesn’t it?16th July 2009 at 05:57 #57962User_2010Guest
Ok, but when the phone is in “Idle Mode” and it measures signals. For examp.
But in the same place we scan frequencies and can see more strongest signals:
Why phone cann’t measure the same signals in Idle Mode. I mean in TEMS.
Thanks16th July 2009 at 06:12 #57963PixGuest
I see that frequency 2 is at -62dBm, in the scan and in the idle mode.
all other frequencies are different so you can’t compare.16th July 2009 at 06:44 #57964User_2010Guest
I don’t want to compare, just my question is: for example:
in the same place phone can scan signal -78dbm (freq:1), but in Idle Mode cann’t measure this signal. Also all this band is belongs to the same Operator.16th July 2009 at 17:23 #57965PixGuest
It means that freq 1
a/ either it is not a BCCH
b/ or it is a BCCH, but then it means it is not defined as a neighbour of the cell on which you’re camping on.
MS can scan the signal, but it is not reported by the MS in the measurements in idle mode.24th July 2009 at 13:13 #57966User_2010Guest
So it means
1. In scan mode the phone scans all broadcasting signals (TCHs & BCCHs).
2. But in Idle Mode the phone measures only BCCHs.24th July 2009 at 13:34 #57967PixGuest
2. / Only BCCH’s that are included in the neighbour list25th July 2009 at 13:40 #57968User_2010Guest
In idle mode the phone measures all BCCHs, not only neighbour cells. It measures neighbour cells only in dedicated mode. Right?
Thyanks30th July 2009 at 09:44 #57969EdoGuest
Yups,,you’re right.30th July 2009 at 13:50 #57970PixGuest
No, you are not correct.
The Ms will listen only to neighbour BCCHs which are listed in the SI5 and SI5ter of the current serving cell.
Only when the MS is switched on, it MAY scan all frequencies in order to find the strongest available/authorized BCCH.31st July 2009 at 09:16 #57971User_2010Guest
Ok Pix Thanks
Many time I see cells in TEMS, but these cells were not defined as adjacent. I mean in IDLE mode. How is it possible in your case.31st July 2009 at 11:18 #57972AliAsgherGuest
The cell’s BCCH is included in IDLE MF List. Thatswhy in TEMS you are seeing those BCCHs and their RXlevels, because MS is trying to listen to all BCCH present in Idle MF list of current serving cell.31st July 2009 at 16:25 #57973PixGuest
TEMS is not a standard MS 🙂 You should have said that you were using TEMS in the first post 🙂
In tems, yes, all frequencies are scanned, even if they are not neighbours. But the ones which are neighbours have a certain colour, aren’t they ? (i’m really not sure anymore)