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Very Very Urgent (Frequency Scan)

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  • #57960 Reply
    User_2010
    Guest

    Dear Guys
    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???

    #57961 Reply
    Pix
    Guest

    The TEMS scanner just scans, no matter which MNC or MCC.

    I think it even works without the SIM card, doesn’t it?

    #57962 Reply
    User_2010
    Guest

    Ok, but when the phone is in “Idle Mode” and it measures signals. For examp.
    ARFCN RxLev
    2 -62
    8 -72
    16 -78
    54 -84

    But in the same place we scan frequencies and can see more strongest signals:

    Freq. RxLev
    1 -78
    2 -62
    3 -83
    4 -75
    5 -86
    .
    .
    .
    Why phone cann’t measure the same signals in Idle Mode. I mean in TEMS.

    Thanks

    #57963 Reply
    Pix
    Guest

    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.

    #57964 Reply
    User_2010
    Guest

    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.

    #57965 Reply
    Pix
    Guest

    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.

    #57966 Reply
    User_2010
    Guest

    Thanks Pix

    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.

    #57967 Reply
    Pix
    Guest

    Yes ๐Ÿ™‚

    2. / Only BCCH’s that are included in the neighbour list

    #57968 Reply
    User_2010
    Guest

    I think
    In idle mode the phone measures all BCCHs, not only neighbour cells. It measures neighbour cells only in dedicated mode. Right?

    Thyanks

    #57969 Reply
    Edo
    Guest

    Yups,,you’re right.

    #57970 Reply
    Pix
    Guest

    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.

    #57971 Reply
    User_2010
    Guest

    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.

    #57972 Reply
    AliAsgher
    Guest

    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.

    #57973 Reply
    Pix
    Guest

    User2010,

    TEMS is not a standard MS ๐Ÿ™‚ You should have said that you were using TEMS in the first post ๐Ÿ™‚

    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)

    Cheers,
    Pix

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Reply To: Very Very Urgent (Frequency Scan)
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