- This topic has 33 replies, 1 voice, and was last updated 2 years, 7 months ago by jamil.
26th May 2009 at 06:26 #57251MKTGuest
Can any body provide some information on the probable reasons for the call drop in 3G WCDMA.
MKT26th May 2009 at 11:17 #57252ChrisGuest
This is very wide question. I’m sure that radio coverage is very common reason, but of course there many other reasons as well.8th August 2011 at 11:21 #57253prakashGuest
No Resource available (Due to congestion on target cell),
Improper Synchronization.3rd November 2012 at 05:18 #57254kamllesh ranaGuest
can any body explain me the differnnce between modulation used in 2G and 3G ….i.e. GMSK and QPSK.29th November 2012 at 05:31 #57255creepztoGuest
based on my experience drop call occur if there is a missing neighbor and the site need to split sector due to congestion.22nd May 2013 at 21:59 #57256kunaGuest
help me with 3g dropped call due to improper synchronization and how it occur..
Thanks..30th July 2013 at 10:07 #57257Pawan SharmaGuest
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
8. Scribbling code collision8th September 2014 at 04:16 #57258Kimhourt channGuest
could you provide me detail about drop call in wcdma.4th November 2014 at 18:30 #57259QualGuest
Probably for drop there are 3 reasons
4.Drop due to others-
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 .5th November 2014 at 12:03 #57260Pawan SharmaGuest
Tune Physical Channel reconfig switch.
It will help to reduced Call drop.8th May 2015 at 14:39 #57261soukaina youssfiGuest
help me with 3g dropped call1st June 2015 at 06:44 #57262Ajaz AhmadGuest
Call Drop Reasons and Solutions14th July 2016 at 12:02 #57263kallo ibrahimaGuest
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:
3-Soft Handover/ Hard handover
4-Other procedure (very high)
I need some help please15th July 2016 at 14:33 #57264Wallis DudhnathGuest
For Call drop (Voice, Data, etc..) I would recommend a Network audit.
Areas to focus on:-
– Activated Network Features (basic / optional)
– Resource Usage
– Traffic Profile / Dimensioning
– Policy Settings
– Quality of Service
– RF setup (and possible optimisation)
– Stability of the Transmission Network (MPLS-TE, SDH, etc..)11th April 2017 at 20:53 #57265Nios BYGuest
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