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Switch Planning for GSM

Viewing 15 posts - 76 through 90 (of 410 total)
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  • #33813 Reply
    madhu
    Guest

    hi i am working for GSM company
    i would like to know in details about Lucent Recomendations
    thanks

    #33814 Reply
    Khalil
    Guest

    Hi all,

    can anyone please tell me or explain to me.. what does this term ‘drop call’ mean.. is it a problem that occur when u change from 1 cell 2 another while ur on the cell phone ? what are the causes of it ? why does it happen ? any solutions 2 it ?

    thanks in advance..

    regards,
    |Khalil|

    #33815 Reply
    Satish
    Guest

    “Each cell site is controlled by a mobile switching center (or ‘switch’). The switch is the brain in the network and may control as many as 100 to 200 cell sites. The voice channels at the cell sites are generally routed to the switch through land lines, and the switch connects the cellular network to the local telephone company. The switch is responsible for keeping track of the mobile call as the handset moves from one cell coverage area to another. This process is known as hand-off, and the switch tells one cell site to drop the call, tells the mobile phone to change voice channel frequencies, and tells the new cell site to pick up the call. All of this is going on without the caller being aware of the transfer (unless it doesn’t work!).

    #33816 Reply
    Khalil
    Guest

    So Satish ur saying that this ‘drop call’ is part of a automatic process know as hand-off, right ? =)

    Sometimes ur call get disconnected when this happens.. is it due to the unsuccessful pick up from the new cell site ? or has the switch on that cell site has already maxed out its network connection ?

    #33817 Reply
    c.kristhudass rabert
    Guest

    Hi
    Sudhir, Charlie, Raquel,Jules & Harshvadan

    If u don’t mind can u guys include my name also in ur friend list,

    Right now I am working in corDECT WLL but i have lots lot of interest in GSM switch field.

    Please teach me something about ur techlogy and planning.

    contact me on sarvamus@yahoo.com

    Thanks & regards
    c.kristhudass rabert

    #33818 Reply
    Anil
    Guest

    Hi Mehmet
    I am working with a leading network operator.I would like to know more about NSS Planning in detail.Can u help me out?
    Thanks and regards
    Anil

    #33819 Reply
    Jon Andre
    Guest

    Hi

    I’m working with BSS optimization at a local mobile operator. I facing a problem with Um/radio interface dimensioning and Half Rate. Could anyone please give me a hint how to use the Erlang B formula when half rate is involved.

    Thanks in advandce

    Jon Andre

    #33820 Reply
    Sachin Aneja
    Guest

    Hi All,
    I will be highly thankful to all of you if u solve out my probs.

    Plz tell me

    1>Procedure for calculating GSM Antenna gain.
    2>Why we always use -24v or -48v power in case of BTS.
    3> How we get roaming(procedure)in GSM.

    4> Also tell me the general questions which anyone can asked at the time of interview for the BSS Engineer.

    plz reply me asap.

    My email i.d is sachinaneja_79@rediffmail.com.

    if anyone wants to share his technical knowledge with me, is always welcome.

    #33821 Reply
    Harinder
    Guest

    Pl tell me some good material to read on BTS site installation?
    1.what are the key points that we should keep in mind while designing any RF N/w.

    #33822 Reply
    Mostafa
    Guest

    Khalil:
    Some radio drop details
    -Dropped Calls Due To Bad Quality

    -Dropped Calls Due To Low Signal Strength
    -Dropped Calls Due To Other Reasons
    If the cell suffers from dropped calls besides the reasons low SS, bad quality and excessive timing advance the dropped calls will be counted as otherreasons.

    #33823 Reply
    mallik
    Guest

    Dear sudhir,

    I would like to learn the fundamentals of RF Planning right from the begening.pls suggest some books and concerned sites that prtesents some docs related to planning.

    #33824 Reply
    AT
    Guest

    hi,

    does Siemens already provide MSC with 1 million VLR capacity and 1 million BHCA. if not what is their max. VLR and BHCA cpacity that they can provide in India.
    Also, how many MSC will Siemens need if an operator has 400K VLR sub. base with 1.5 BHCA per sub and 40mrl traffic per sub.

    thanks
    kr
    ashish
    from an operators marketing dept.

    #33825 Reply
    Sudhir
    Guest

    Hi Ashish,

    I am working for an operator overseas and we are using siemens switch. i will give u some information based on the our network. We have installed Power CP in all our MSCs, the static capacity of VLR is 180K, with 1.7 BHCA.

    400k sub 1ith 1.5 BHCA, total BHCA will be 600k. Assuming 180k VLR in one MSC, u need atleast 3 MSCs.

    Any more clarrification u can write back.

    Thanks.

    #33826 Reply
    AT
    Guest

    Hi sudhir,

    can u provide your email address on ashish_tandon@hotmail.com so that we can correspond directly. by the way what is the maximum VLR static capacity u can have in the MSC with power CPU. and did u have any problems after upgarding the MSC with power CP. such as stability problems etc.

    #33827 Reply
    ina
    Guest

    Hello,

    I am a telecommunication Engineer,currently supporting an MVNO in Europe.
    I would like to know how can I calculate how many SS7 Links do I need to connect to SMSC(short message center)?
    I would be very glad if you could let me know how.

    Thank you in advance,

    Ina

Viewing 15 posts - 76 through 90 (of 410 total)
Reply To: Switch Planning for GSM
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