- This topic has 17 replies, 1 voice, and was last updated 9 years, 6 months ago by
pix.
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AuthorPosts
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SAM
GuestNeed help to understand channel elements dimensioning for umts.
sanjay gohel
GuestHi i am interested to know about ch elements
Iqbal Ahmed
GuestResponse this
can plz. any one share there ideas for channel element…….
jamalludin mohamed
GuestHi friend do you know how to calculate the available Channel Element in NodeB WCDMA
Zubair
GuestClear 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 8DJMEL HABIB
Guestin 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
santosh
GuestFriends, I want to know how to calculate CE utilization in WCDMA.
Hussain
GuestTraffic 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
pix
Guesthi hussain,
do you have some explanations for the last line ? it’s heavy !
thanks
pixChristian
GuestHello
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
Hussain
GuestDear
Last line means you have PS64, PS128, PS384 and HSUPA so you can calculate the CE.
Thanks
Face
GuestHello 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.??
jen
Guestwhy UL CE is bigger than DL CE?
sha
GuestHi 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
msa
Guestwhy CE utilization in uplink is more than downlink
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