Sunday, February 3, 2013

Repeated SACCH/FACCH - CDR Alcatel-Lucent

Call Drops can be reduced to a great extent in the equipment of Alcatel-Lucent (B11, B10) by using the feature of repeated SACCH/FACCH frames.

Parameter:

  • EN_REP_DL_FACCH
  • EN_REP_SACCH
Target Cells: Radio Drops, HO Drops

Theory: 
  • Each DLFACCH frame is sent twice by enabling this parameter thereby improving handover reliability in AMR Calls reducing call drop rate
  • If a SACCH is not decoded correctly by MS, the BTS will resend it that enhances coverage and decreases drops (SACCH is used for transmission of radio measurement data such as TA, Power Control Info, SMS during call etc)
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1 comment:

  1. ZION TELECOM CONSULTINGMarch 27, 2014 at 4:10 PM

    Hello,

    Looks like very interesting but WHAT ARE THE PARAMETERS VALUES ?

    REP_DL_FACCH_LEGACY_SUPPORT
    REP_DL_FACCH_THRES_AMR_FR
    REP_DL_FACCH_THRES_AMR_HR
    RADIOLINK_REP_DL_SACCH

    Thanks

    ReplyDelete

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