- This topic has 34 replies, 1 voice, and was last updated 12 years, 2 months ago by Bijoy.
21st April 2010 at 04:46 #62278guruGuest
“Maximum Ratio Threshold of PDCHs in a Cell”
Hi all ,Can any one explain me the actual discription of this huawei parameter..Is it for to calculate static PDCH or Dynamic?21st April 2010 at 05:01 #62279BijoyGuest
This parameter actually defines the maximum no. of PDCH’s in a cell(dynamic+static).
Consider an Example.
Say you set “Maximum Ratio Threshold of PDCHs in a Cell” to 30%
No. of Static PDCH=3
No.of TCH =28
Then Max available PDCH=(28+3)*30/100 =9.3
So,the maximum no. of Dynamic PDCH will be (9-3)=6.
Bijoy21st April 2010 at 05:12 #62280GURUGuest
Thnaks Bijoy for the prompt reply..How you are taken No.of TCH =28 ? how many carriers 3?21st April 2010 at 05:15 #62281guruGuest
not 3 ..i think 4 ? also tell me whats the actual use of this parameter21st April 2010 at 05:53 #62282BijoyGuest
Yes,I have taken 4 TRX for the cell.By this parameter you can optimize the Dynamic PDCH in a cell as per your requirement.
Bijoy21st April 2010 at 06:13 #62283PrabeenGuest
Can u tell me on wat basis should i do the TS expansion for EDGE?? Which criteria should i take n wat s the threshold. pls help21st April 2010 at 06:23 #62284guruGuest
Thanks a lot Bijoy21st April 2010 at 07:08 #62285BijoyGuest
TS increment for EGPRS/GPRS should be done as per soft n hard blocking.For soft blocking increase Dynamic TS & for Hard increase the fixed ones.
Soft Blocking > 5%
Hard Blocking > 2%
You can try flexi abis also to obtain good data KPI’s
Bijoy21st April 2010 at 07:09 #62286PrabeenGuest
But could u explan wat is soft n hard blocking.22nd April 2010 at 04:09 #62287guruGuest
Bijoy one more doubt ..what would be the impact if i make the ratioo to 100% ?
Also pls explain soft n hard blocking.22nd April 2010 at 06:05 #62288BijoyGuest
Hard Blocking means user is totally deprived to get any channel for data,i’e PDCH.
Soft Blocking means user is not totally deprived of data channel,but it is not up to the mark of the user capability,say the MS is capable of 4 TSL’s in DL & 2 in UL,but it is assigned 2 in DL & 1 in UL.
If you make that 100%,it will mean all your TCH’s can be used as dynamic PDCH.In that case,the parameter “Maximum PDCH numbers of carrier” should be set as “8”.
But never set it as 100%,it will affect the CS services
Bijoy22nd April 2010 at 06:42 #62289PrabeenGuest
That was a beautiful explanation. Also, Could u tel me the process or command to retreive the data from server in Ericsson system.
And, I have got most of my Cells with High Packet Channel Allocation Failure. Could you tell me thereason for this? The CS traffic is considerably low for all these cells. N i dont have any RPP constraint. Wher else should i invent?
pls help.22nd April 2010 at 11:21 #62290guruGuest
Thanks Bijoy , wonderful,22nd April 2010 at 15:23 #62291BijoyGuest
What is your vendor?Is it Huawei??
Bijoy23rd April 2010 at 07:10 #62292PrabeenGuest