- This topic has 13 replies, 1 voice, and was last updated 5 years, 4 months ago by sachin tyagi.
6th August 2010 at 05:33 #63955ArvindGuest
I got 1 issue in GSM site…
In this site particular sector facing RX Quality issue.There is no nearby neighbour sites for 5km facing this sector..
I have tried these steps
2.No hardware issues
4.Checked with Swapping TRX
5.No Cable swap.
6.With Reference to TA report tilt given
What can be done after this?Pls Suggest….8th August 2010 at 04:55 #63956LexGuest
Have you checked the interference report?
Which vendor?8th August 2010 at 05:49 #63957jaihuGuest
for such an isolated site u can go for
-of course look for interference sources thoroughly,
-increase coverage by increasing power
-check the buildings in front of this sector
-if high buildings exist, and power increase doesn’t help then, change of the site location might help9th August 2010 at 06:06 #63958ManiaGuest
When you say RXQuality issue, do you mean bad RX Qual in field / in HO Stats on in RMS stats, Please clarify.
In any case is it effecting one radio / one band / all hopping etc, pls specify which is worst hit. check from frequency point of view.12th August 2010 at 13:50 #63959ArvindGuest
issue is with hopping frquencies,checked with HSN and MAIO plan.12th August 2010 at 20:37 #63960AlexiaGuest
with SFH normally you can have bad rx quality but the SQI is good and the customers can hear each other well. which problem do you really face??30th November 2012 at 18:56 #63961Ashvaan sheikGuest
some sites can overshoot above 5kms also
so check it out.. Check coverage level.. if there is a lake or river near by then interference occurs due to TIR..check whether nieghbours are properly defined.. there can be a problem of handover failures,,, or change the orientation little bit.. then do post drive and observe..4th November 2013 at 10:49 #63962MAMAD.SAEDGuest
RX- QUALITY (UP LINK ) LOW . SOLOUTION .PLEASE HELP ME4th November 2013 at 18:49 #63963pixGuest
.REDUCE DOWNLINK TX POWER.26th November 2013 at 07:27 #63964MAMAD SAEDGuest
IN THE HUAWEI HAVE( TCH ass FR ) TO SOLVE THIS CAN YOU HELP ME WHATS YOUR SOLUTION?9th July 2016 at 05:58 #63965rakesh patelGuest
plz.. suggest10th October 2017 at 12:30 #63966Subhakanta jenaGuest
If Rx level is good but Rx quality is bad.Then what is the reason behind it and how to solve this.Also plz give some idea about pilot pollution10th October 2017 at 20:59 #63967LemaureGuest
Hi Subhakanta jena
Good Rx level and bad Rx quality is due to interference as know in GSM/LTE or pollution in WCDMA systems;
the latter is due to many servers having almost the same signal strengtht without any being significantly dominant compared to the others (usually more than 5 radiolinks) and all of them being low.
to fix it you just need to create a dominant server thanks to physical actions on site and neighbors. Also make sure radio parameters are not incriminated (wrong location/mobility parameters like CIO,Qoffset,…)23rd January 2018 at 04:44 #63968sachin tyagiGuest
firstly in 2G there is no pilot pollution, we can relate the term as UL and Dl interference,
if we are having good Rx level but Rx quality is poor then below are the resons behind it.
# Same BCCH or TCH pr BSIC will be there.
# Some cells are overshooting at that place.
# UL and DL interference may be worst which will be found in Reports 196,210 in Nokia.
#Check SQI and BER .
# TCH interference was there which will be found in live BSS .
#UL and DL interference may be due to some hardware issue or any external source
any issue mail me on
- The forum ‘Telecom Design’ is closed to new topics and replies.