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Need help to understand channel elements dimensioning for umts.
Hi i am interested to know about ch elements
Response this
can plz. any one share there ideas for channel element…….
Hi friend do you know how to calculate the available Channel Element in NodeB WCDMA
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 8in 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 problem
Friends, I want to know how to calculate CE utilization in WCDMA.
Traffic Model
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 2880.00Assumptions
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 ErlCE for voice peak traffic
33 * 1=33 CECE for UL R99 PS64k
((144*586)/(64*0.2*3600))*3*(1 20%)*(1 1%)*(1 40%) = 10CESame you can calculate for other RAB Services and HSUPA.
Thanks
hi hussain,
do you have some explanations for the last line ? it’s heavy !
thanks
pixHello
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 useMany Thanks for your support
Dear
Last line means you have PS64, PS128, PS384 and HSUPA so you can calculate the CE.
Thanks
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.??
why UL CE is bigger than DL CE?
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 advance
why CE utilization in uplink is more than downlink
