- This topic has 15 replies, 1 voice, and was last updated 16 years, 2 months ago by
Pix.
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24th November 2008 at 12:11 #54728
Antapé
GuestI have some cells in my GSM network that have Outgoing HO success too low while target cells are not congested and are normal. please propose me a solution to find the problem and possible solution.
Thanks!
24th November 2008 at 12:41 #54729Kamaz
GuestDid you check the NSS/BSS declaration for your cells/LAC?
24th November 2008 at 17:22 #54730Antapé
GuestYes i check and i find that the declaration is good.
25th November 2008 at 09:47 #54731pix
Guestantapé,
If you’re certain your declarations are good, then it can be either:
– interference
– dual BSIC/BCCH
– poor coverage
– hardware problemWhat are your curent:
HO OUTGOING EFFICIENCY RATE ?
HO OUTGOING PREPARATION SUCCESS RATE ?Regards,
pix25th November 2008 at 09:57 #54732Host
Guestin the same topic, what are the reasons for low HO attempts (>=200 HO)at MSC borders. i think it’s a matter of declaration but i will further explanation. thanks
25th November 2008 at 12:38 #54733Antapé
GuestHO OUT EFFICIENCY RATE is low also but i don’t have the indicator: OUT HO PREPARTION SUCCESS RATE.
25th November 2008 at 14:06 #54734Kamaz
GuestThis KPI depend on providers. For exemple we dont have OUT HO PREPARTION SUCCESS RATE on NSN. But for this case we have an execution Pb (low HO OUT EFFICIENCY RATE): It can be like what pix said:
– interference
– dual BSIC/BCCH
– poor coverage
– hardware problemJuste a question: for the target side, what is the worst KPI for HO Inc (HO Inc Fail due to ?)
25th November 2008 at 15:08 #54735pix
Guestantapé, are you working with alcatel ? in this case, you have this indicator in RNO…
Check out the indicators, per family “Outgoing HO Internal & External > Preparation > Success Rate”Please give me numerical values 🙂
Best Regards,
25th November 2008 at 17:17 #54736Antapé
GuestYes i am working with alcatel but my company did not purchase RNO
27th November 2008 at 16:23 #54737Host
Guestany feedback about my last item.
27th November 2008 at 17:23 #54738Pix
Guestbut you do have NPA, right ? Open NPR > DICO > GRAPHIC > PM VIEWER
The indicators are called HOORRQGR and HOOREFGRAlso, thanks to Adjacency indicators, you could find out which is the “faulty” neighbor (in other words, towards which neighbor the HO are failing the most)
30th November 2008 at 14:45 #54739MAS
GuestDelete the nighbours and create it againe,i will tell u the problem name if it is fixed, so please feed me back.
12th December 2008 at 16:04 #54740Antapé
GuestI check with PM viewer and i see that in out the preparation rate is about 98% but in Inc it is 20%without no congestion and less interference.
Coverage issue perphaps???13th December 2008 at 09:48 #54741Pix
Guest20% Incoming HO Preparation success Rate ?
Ok, so the problem is either:
– congestion in the cell
– hardware problemsSince you say there is no congestion, then you should focues on the hardware (or even the BSC database). I suggest you delete all neighbours and recreate them, even delete the cell and recreate it.
You can ask the local TAC to have a look to your BSC database.If it’s still not working, try changing the SUM card (perhaps… but i’m not sure)
19th December 2008 at 16:27 #54742Antapé
GuestI forgot to tell u that the distance between the 2 cells are about 20 Km. *
I recreate the handover definition and i ‘ve got same result.
Any suggestion??? -
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