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Call drop in 3G -UMTS

Viewing 15 posts - 1 through 15 (of 34 total)
  • Author
    Posts
  • #57251 Reply
    MKT
    Guest

    Hi,
    Can any body provide some information on the probable reasons for the call drop in 3G WCDMA.

    Regards,

    MKT

    #57252 Reply
    Chris
    Guest

    This is very wide question. I’m sure that radio coverage is very common reason, but of course there many other reasons as well.

    #57253 Reply
    prakash
    Guest

    SC Collision.
    Pilot pollusion
    Missing Neighbour,
    No Resource available (Due to congestion on target cell),
    Hardware issue.
    Delayed Handover,
    Improper Synchronization.

    #57254 Reply
    kamllesh rana
    Guest

    can any body explain me the differnnce between modulation used in 2G and 3G ….i.e. GMSK and QPSK.

    #57255 Reply
    creepzto
    Guest

    based on my experience drop call occur if there is a missing neighbor and the site need to split sector due to congestion.

    #57256 Reply
    kuna
    Guest

    kindly
    help me with 3g dropped call due to improper synchronization and how it occur..

    Thanks..

    #57257 Reply
    Pawan Sharma
    Guest

    Call drop can be because of poor coverage(TP value is high):-

    1. TP Value is high.

    2. Congestion on target Cell

    3. Missing Neighbor.

    4.INSYNCID & OUTSYNCID mismatch

    5. Inter frequency missing neighbor.

    6.Due to alarm & Hardware issue

    7.Pilot pollution

    8. Scribbling code collision

    #57258 Reply
    Kimhourt chann
    Guest

    Dear all,
    could you provide me detail about drop call in wcdma.

    #57259 Reply
    Qual
    Guest

    Probably for drop there are 3 reasons
    1.SoHo
    2.neighbor
    3.UlSynch
    4.Drop due to others-
    1.Pilot Pollution
    2.hardware/Software issue
    3.SC collision
    4.issue in nearby site
    5.Nodesynch Phase Drift alarm
    6.MP Load /Dc Load /Cc Load

    heath check is required to be done earlier .

    #57260 Reply
    Pawan Sharma
    Guest

    Hi ,

    Tune Physical Channel reconfig switch.

    It will help to reduced Call drop.

    #57261 Reply
    soukaina youssfi
    Guest

    help me with 3g dropped call

    #57262 Reply
    Ajaz Ahmad
    Guest

    Call Drop Reasons and Solutions

    #57263 Reply
    kallo ibrahima
    Guest

    Good Morning
    Im kallo, working on ZTE equipement. I have some difficult to improve 3G call drop CS domain.

    I have check and found that the main 3G CS Call drop reasons are:
    1-Other reason
    2-RAB Release
    3-Soft Handover/ Hard handover
    4-Other procedure (very high)
    5-Call re-estabilshment.

    I need some help please

    #57264 Reply
    Wallis Dudhnath
    Guest

    For Call drop (Voice, Data, etc..) I would recommend a Network audit.
    Areas to focus on:-

    – Activated Network Features (basic / optional)
    – Resource Usage
    – Licenses
    – Traffic Profile / Dimensioning
    – Policy Settings
    – Quality of Service
    – RF setup (and possible optimisation)
    – Stability of the Transmission Network (MPLS-TE, SDH, etc..)

    #57265 Reply
    Nios BY
    Guest

    I work on Ericsson 3G equipment (DUW) I have a lot of drop call in CS and PS_RAB.

    What is the parameter of the power to decrease the power of the cell so as not to go very far finally to avoid the degradation of the signal.

    What is the maximum distance in 3G cell must cover to prevent its degradation and avoid congestion.

    What are the most commonly used power settings

Viewing 15 posts - 1 through 15 (of 34 total)
Reply To: Call drop in 3G -UMTS
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