- This topic has 11 replies, 1 voice, and was last updated 10 years, 9 months ago by TAD.
12th August 2011 at 18:47 #66930TDGuest
Please help by as how can i Minimize interference by using power control. Place is hilly terrain with low inter site distance. Varies from 300 mts to 700 mts with tight BCCH planning. Window size is 6 with avg period 2(UL/DL).UL/DL level increase 22 and decrease 30.UL/DL Quality increase 2 and decrease 0. Px 3 Nx 4.
Please help as I am waiting for your eagar suggestion.13th August 2011 at 07:48 #66931pixGuest
could list all your parameters related to power control, in a neat way ?
please search for other posts related to power control, you’ll find good info.13th August 2011 at 12:06 #66932TDGuest
Thanks for replying.UL Power control and DL power control is enabled.
Min interval of power control:2,2,2,2
Increase/Decrease Step size:0,
MsTxPwrMax:5,MsTxPwrMin:16,BsTxPwrMin:10,Increase uplink level:22,Decrease uplink level:30,Increase uplink quality:2,Decrease uplink quality:1,Increase downlink level:25,Decrease downlink level:35,Increase downlink quality:2,Decrease downlink quality:1,Px:3,Nx:4.13th August 2011 at 18:27 #66933TDGuest
Also Preprocess value is 2. Is that any effect on it…Vendor is ZTE.
Thanks.14th August 2011 at 17:31 #66934pixGuest
i’m not familiar with zte algo, so i’m just gonna comment on the very basic stuff:
Increase/Decrease Step size:0,
MsTxPwrMax:5,MsTxPwrMin:16 –> could you translate this in dBm ? 5 –> 33dBm ?? 16 –> ??? there is probably room for improvement here, so it is important we work on those.
BsTxPwrMin:10 –> how much power is it ? 10dB less than the max power ? or Tx power = 10dBm ?
Increase uplink level:22,Decrease uplink level:30 –> there is something to improve here. Try inc level = 25 and dec level = 15
Increase uplink quality:2,Decrease uplink quality:1 — try inc qual = 3, dec qual = 1
Increase downlink level:25, – ok
Decrease downlink level:35, – ok
Increase downlink quality:2, – try 3
Decrease downlink quality:1,
Px:3,Nx:4 – ok (i’m not familiar with those)
pix15th August 2011 at 15:24 #66935TDGuest
MsTxPwrMin:16 is 11 dBm.
BsTxPwrMin:10 is 20 dBm.
P and N value is 3 highest sample value out of 4 values.
Can You please help me ?15th August 2011 at 17:17 #66936pixGuest
so the previous recommendations are still valid, and on top of them you can do:
MsTxPwrMin = 5dB or less (choose the minimum value)
The step size = 0 is very surprising. It should be 2dB… but this is strongly algo dependent, so maybe 0 is fine. Could you please explain this one for me ?
pix16th August 2011 at 10:15 #66937TDGuest
Thanks for your reply.
Step size 0 means 2 db.
Aside to that is there any change i can do with Ho Parameter.
Rxlevmin 15 for all cells.
Uplink receive level 15.
Downlink receive level 15.
Please suggest.16th August 2011 at 17:04 #66938pixGuest
I gave you a list of changes to do… Have you applied them ? what’s the result ?16th August 2011 at 17:54 #66939TDGuest
I Will Make this changes for 5 cells. But Need to Wait for 48 Hrs. Will Join you and share the results.Thanks and will be back soon.19th February 2012 at 23:33 #66940mannuGuest
it cause uplink handover also21st February 2012 at 09:13 #66941TADGuest
HI ALL ,
I AM NOT WELL EQUIPPED IN GSM, PLEASE EXPLAIN THE MEANING OF THE FOLLOWING REPORTS –
AMR Full Rate Speech Algo Fall Back_v1
THANKS IN ADVANCE
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