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CDMA

  • This topic has 16 replies, 1 voice, and was last updated 18 years ago by MP.
Viewing 15 posts - 1 through 15 (of 17 total)
  • Author
    Posts
  • #42111
    Amberish Trivedi
    Guest

    How Inter CBSC Soft Handoff is defined in Motorola system..i.e they are using type 4, type 7…but when we kn use which type?

    #42112
    khan
    Guest

    give details of rf plaining of cdma

    #42113
    amberish trivedi
    Guest

    hi khan/… we are using 2 set of frequencies…so when my call is going from 1 sector of 1 site to another sector of 2nd site then they are defining this handoff as a soft if these sites are controlled by same CBSC but if they are handelled by different CBSC then they are defining it as ICSHO4 or ICSHO7…this much i kn say you…awaiting for ur reply

    #42114
    Santy
    Guest

    I want to know about the diff between soft and softer HO?

    #42115
    Kuma
    Guest

    Soft HO is between two cells at different sites. Softer HO is between two co-located (at same site) cells.

    #42116
    santy
    Guest

    can u explain in terms of sector -carrier?

    #42117
    Kuma
    Guest

    Both Softer and Soft HO are within one frequency.

    #42118
    Santy
    Guest

    What if one cell is 2 FA and other is 3 FA…And if the person on third frequency going to next site having two carriers?

    #42119
    nassim
    Guest

    you have one parameter you need to adjsut in this case
    RTD: round trip delay

    regards

    #42120
    Santy
    Guest

    Nassim…
    Can u elaborate your point?

    #42121
    nassim
    Guest

    Dear Santy

    When the mobile’s RTD passes upward through a datafilled threshold,the system steps in and orders a hard handoff to the matching sector of the bridge cell on the other system
    regards
    Nassim

    #42122
    Niyi
    Guest

    I have worked on circuit switch but am trying to move into SOFTSWITCH. I mean IP Telecomms engineer. am in Lagos Nigeria.i also need foundamentals of VoIP STUFF.
    THANKS
    Regards
    Niyi

    #42123
    amberish
    Guest

    hi santy, answer to ur question if person going from two carrier to third carrier site then there is no problem. He will get only hard handoff but if he is going from 3 carrier to 2 carrier site then u have to define parameter DAHO in 3c site so customer call will not get dropped when he is moving from 2c to 3c. I hope it will clear ur doubt.

    #42124
    venkat esh
    Guest

    Hi Amberish/Santy,

    This is in reference to A mobile moving from 3C to 2c.

    let the frequencies with BTS A be F1,F2,F3 & BTS B be F1,F2.

    If mobile is moving from A to B there is no problem, but if the mobile is moving from B to A and With The Mobile Hashed to F3. Then Border definitions have to be defined in such a way that F3 is H/O to F2.

    rgrds
    Venkat

    #42125
    yvravi
    Guest

    Hi Nassim/Shanty,

    Transalations allow selected sectors to be configured for Inter Frequency Handoff.To Maximize the coverage/Capacity acheived on aborder cell it is recommended that the only outward facing sectors of each Fn/Fi.Border cell be configured for Inter Frequency Handoff.The inward facing sectors will normally configured for Fn Traffic.

Viewing 15 posts - 1 through 15 (of 17 total)
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