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Channel Elements

Viewing 8 posts - 1 through 8 (of 8 total)
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  • #65861 Reply
    Rkb
    Guest

    Hi,
    What is channel element in 3G ?
    If I use only 1 frequency per cell, how many Channel Elements (CE) I can get in 3G?
    Can any one describes briefly pls?

    #65862 Reply
    Rkb
    Guest

    any 1 there to clear it pls?

    #65863 Reply
    Rkb
    Guest

    To my understanding CE means the Channelization Codes……..am I right???

    #65864 Reply
    Bijoy
    Guest

    Hi All
    CE represents the processing capability of the DSP hardware,Each RAB type loads the DSP differently; therefore, the number of channel elements representing each service depends on the allocated UL/DL bit rate. If there is not enough DSP capacity, represented by the channel elements for a new connection, the BTS blocks the new service.The user can control the number of CEs with a license, up to the limit supported by the hardware.

    Br\\
    Bijoy

    #65865 Reply
    Rkb
    Guest

    thanks Bijoy.
    If I use only one UARFCN for one cell, how many channel elements can I get for this cell for Voice (12.2 kbps)?
    I means how to calculate the total number of Channel elements per cell for each service type?

    #65866 Reply
    Bijoy
    Guest

    Hi RKB
    CE depends on the DCH rate,for AMR voice it is 1 CE/connection.Add to it the CCCH usage(say 1 CE/CCCH),so for each AMR voice call you need at least 2 CE’s per connection.

    Br\\
    Bijoy

    #65867 Reply
    sodik
    Guest

    CE is Channel Element, 1 CE = 16000 slot

    #65868 Reply
    Ater
    Guest

    Tipically you will need 256 CE (never more than 512) depending on the node b configuration (3 o 6 sectors) and the type of traffic that you are offering (speech, CS64, PS r99 or HSDPA). To support this you will need HW and SW licenses
    In general the limiting factor will be the uplink CEs (try to avoid R99 connections of PS128 and PS384 kbps as they consume a lot of CE in Uplink and channalization codes in downlink)

Viewing 8 posts - 1 through 8 (of 8 total)
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