- This topic has 17 replies, 1 voice, and was last updated 8 years, 4 months ago by pix.
3rd February 2010 at 13:20 #60949SAMGuest
Need help to understand channel elements dimensioning for umts.17th July 2010 at 07:51 #60950sanjay gohelGuest
Hi i am interested to know about ch elements18th October 2010 at 09:46 #60951Iqbal AhmedGuest
can plz. any one share there ideas for channel element…….13th January 2011 at 11:49 #60952jamalludin mohamedGuest
Hi friend do you know how to calculate the available Channel Element in NodeB WCDMA15th June 2011 at 05:09 #60953ZubairGuest
Clear Definition For Channel element
“A band Channel Element is the resource base required in the Node-B to Provide for one voice channel capacity, including the control plane to Provide for one voice channel capacity, including the control plane signaling, compressed mode, the transmit diversity and softer handover. “signaling, compressed mode, the transmit diversity and softer handover.”
Factors affecting capacity in WCDMA UL and DL, sorted by descending level of importance as follows: Factors affecting Capacity in WCDMA UL and DL, sorted by descending level of Importance as Follows:
– UL: No. CE support on each Node B, interference, Node B sensivity, .. – UL: No. CE support on the each Node B, interference, Node B sensivity, ..
– DL: No. CE support on each Node B Iub interface capacity, power DL, OVSF, … – DL: No. CE support on the each Node B Iub interface capacity, power DL, OVSF, …
Thus, CE can be viewed as a license for each NodeB capacity (not more). Thus, CE can be viewed as a license for each vertex NodeB capacity (not more).
Each service will need some different CE UL and DL, such as: the each service will need some Different CE UL and DL, such as:
AMR 12.2 k: Uplink 1; downlink AMR 12.2 k 1: Uplink 1; downlink 1
CS / PS 64 K: 3 Uplink, downlink 2 CS / PS 64 K: 3 Uplink, downlink 2
PS 128/144k: Uplink 5; downlink 128/144k PS 4: Uplink 5; DL 4
384 k PS: Uplink 10, downlink 8384 k PS: Uplink 10; downlink 813th October 2011 at 16:43 #60954DJMEL HABIBGuest
in the license etch Node B The channels elements config is UL:272 /DL:48
– i have a congestion for the ps DL/UP channels elements, the HSUP
and the HASDP function normal no congestion.
please can some one answer me about the resolution off this problem3rd November 2011 at 08:01 #60955santoshGuest
Friends, I want to know how to calculate CE utilization in WCDMA.27th April 2012 at 03:13 #60956HussainGuest
AMR12.2 (Erl) 0.035 0.035
CS64 (Erl) 0.000 0.000
PS64 (kbit) 144.00 96.00
PS128 (kbit) 0.00 192.00
PS384 (kbit) 0.00 288.00
HSPA (kbit) 576.00 2304.00
Total 720.00 2880.00
Subscriber per site (S111) is 586
SHO overhead 20%
Retransmission for PS 1%
Burst Ratio 40%
Traffic of voice
0.035*586*(1+20%) = 24.612 Erl
GoS=2% do =33 Erl
CE for voice peak traffic
33 * 1=33 CE
CE for UL R99 PS64k
((144*586)/(64*0.2*3600))*3*(1 20%)*(1 1%)*(1 40%) = 10CE
Same you can calculate for other RAB Services and HSUPA.
Thanks29th April 2012 at 13:29 #60957pixGuest
do you have some explanations for the last line ? it’s heavy !
pix11th May 2012 at 22:21 #60958ChristianGuest
Any idea about the 2 Below Radio KPI
– Average uplink CE congestion rate
– Power Congestion
• Which input to use
• Any Measurement Protocol
• Minimum Level
• Formula to use
Many Thanks for your support26th June 2012 at 03:07 #60959HussainGuest
Last line means you have PS64, PS128, PS384 and HSUPA so you can calculate the CE.
Thanks2nd July 2012 at 11:05 #60960FaceGuest
Hello friend…Are the SHO overhead, Burst ratio, retransmission for PS and the formula to calculate CE is vendor dependent or it is a standard values.??3rd August 2012 at 06:47 #60961jenGuest
why UL CE is bigger than DL CE?4th October 2012 at 17:40 #60962shaGuest
Hi Hussain, Please explain this forumal again for other services
CE for UL R99 PS64k
((144*586)/(64*0.2*3600))*3*(1 20%)*(1 1%)*(1 40%) = 10CE..
Thanks in advance3rd December 2012 at 06:27 #60963msaGuest
why CE utilization in uplink is more than downlink