- This topic has 7 replies, 1 voice, and was last updated 10 years ago by pix.
3rd May 2011 at 11:23 #66258JOGuest
I have some cells wich have high trafic in my ALU network.
So I dicided to install ANY combiner in order to add more than 4 TRXs on the sector_1, since the two sectors( 2&3) are not full in TRXs.
But the issue is : after the installation of ANY, the trafic decreased : it becomes 10Erl instead of 33erl.
Does some one can help me please ?4th May 2011 at 08:58 #66259anhGuest
Using the ANY will lose 3.3dB. You can check if the coverage of this cell becomes narrow by drive-test.
BR//TA4th May 2011 at 10:45 #66260RexGuest
in order to keep traffic as before, remove ANY and activate HalfRate. ANY gives additional attenuation. Therefore the coverage decreases, hence, traffic decrease.
Rex4th May 2011 at 13:36 #66261SmartGuest
In addition of what Rex said after activating the HR and you still have congestion try moving some traffic to the neighbor cells.
If the cell is on a isolated area and the congestion still continues decreasing the HR threshold8th May 2011 at 16:52 #66262JOGuest
Thank you for this; but I want to use ANY on the sector_1 because it has 40 Erl and the 2nd and 3rd sectors have each 5 Erl.
It is an Isolate cell.
Can you tell me more please ?9th May 2011 at 06:40 #66263SmartGuest
I think its better to remove any activate HR and set HR threshold to 40% but If you want to use ANY than
install a bigger antenna with TMA so you can gain some dB12th May 2011 at 11:20 #66264JOGuest
Thanks Smart , I’ll try to install TMA and may be TRX High power can help too .14th May 2011 at 19:16 #66265pixGuest
Are you familiar with NPO and the RMS indicators ?
If yes, then check (before and after ANY installation):
path balance of TRX –> to check if your ANY is functionning properly.
average rxlev per trx, in DL and in UL
average timing advance per trx
and more interestingly
vector “rxlev per TA and per sample”.
with these indicators, you’ll have a very clear picture of what is happening on the radio.