ce iub dimensioning
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Soc Classification level / 1 © Nokia Siemens Networks
CE & CE & IuBIuB Capacity Dimensioning Capacity Dimensioning
Soc Classification level / 2 © Nokia Siemens Networks
Contents
• CE Dimensioning• IuB Dimensioning• Example of CE & IuB Dimensioning Exercise• Recommended Node B Configuration• In Practice: Dimensioning based on HSDPA Subs
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CE Dimensioning
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CE Dimensioning
26161…3
RU106410…12RU10487…9
52324…6
FlexiUltrasite
(WSPC) CE required for CCCH# cells/BTS
+ 1 CE per HSDPA user for signalling channels
80/cell64/cellCell Specific Scheduler
80 to support HSDPA in 3 cells
64 to support HSDPA in 3
cells
Shared Scheduler 10/15 codes
806415 codes
806410 codes
32325 codes
Channel Elements requiredUltrasite Flexi
HSDPA
• Common channel CE requirement
CE Dimensioning
• HSDPA CE requirement
Soc Classification level 5 © Nokia Siemens Networks
CE Dimensioning
880
16012821-2413210817-201128813-1680649-1256485-832321-4
FlexiUltrasite (WSPC) CE required for HSUPA# HSUPA users
/BTS
R9944128kps 4464kbps2232kbps1116kbps / voice
1616384kbps88256kps
FlexiUltrasite (WSPC) CE required for R99Bit rate
+ 1 CE per HSUPA user for signalling channels
• R99 CE Requirement
CE Dimensioning
• HSUPA CE requirement
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Illustration of CE Usage
• Configuration– Ultra Site Supreme Node B– 3 cells– 1x5code HSDPA– 3 WSPC (192 CE)
• 3 WSPCs in this case can accommodate simultaneously:– 12 HSDPA users w 64 kbps UL– 3 R99 PS 384DL/64UL users– 5 R99 PS 128DL/64UL users– 8 Video users– 32 AMR users
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IuB Dimensioning
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IuB Dimensioning
• IuB required size is determined by the following factors– Bandwidth allocation for control plane– Bandwidth reserved for HSDPA– Bandwidth for carrying R99 traffic
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IuB Bandwidth for various services
• R99 IuB BW
• HSDPA IuB BW
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Example of IuB and CE Dimensioning ExerciseWith Flexi WCDMA BTS (FSMB)
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CE & IuB Dimensioning (With FSMB)
• Assumptions– R99 traffic mix and HSDPA requirement is given– CS (video and voice) is assumed with GOS 5%– Node B type: Flexi WCDMA BTS (FSMB)– HSDPA QoS: 512 kbps/user– Soft Handover Overhead: 30%
• Node B & HSDPA Config
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• SHO and CS Trunking Calculation
• Traffic Carried
CE & IuB Dimensioning (With FSMB)
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CE Dimensioning (With FSMB)• CE Calculation
• CE Required– DL: 118, UL: 116– CE required: 118
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IuB Dimensioning (With FSMB)• R99 Traffic to be carried in the IuB
• IuB Capacity Required
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Example of IuB and CE Dimensioning ExerciseWith Flexi WCDMA BTS (FSMC/FSMD/FSME)
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• Assumptions– R99 traffic mix and HSDPA requirement is given– CS (video and voice) is assumed with GOS 5%– Node B type: Flexi WCDMA BTS (FSMC/FSMD/FSME)– HSDPA QoS: 512 kbps/user– Soft Handover Overhead: 30%
• Node B & HSDPA Config
CE Dimensioning (With FSMC/FSMD/FSME)
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CE Dimensioning (With FSMC/FSMD/FSME)
• SHO and CS Trunking Calculation
• Traffic Carried
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CE Dimensioning (With FSMC/FSMD/FSME)• CE Calculation
• CE Required– DL: 92, UL: 90– CE required: 92
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IuB Dimensioning (With FSMC/FSMD/FSME)• R99 Traffic to be carried in the IuB
• IuB Capacity Required
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Dimensioning Based on HSDPA Subs
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HSDPA Driven Capacity Dimensioning• Factor considered
– HSDPA Bandwidth (1x3.6, 3x3.6, 3x7.2, 3x14.4)– User predefined QoS (512 kbps/user, 256 kbps/user, 128 kbps/ser)– Contention Ratio– # Subs to be supported
• Example for 512 kbps /user QoS
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Node B CE & IuB Configuration Examples
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Node B RequirementsHSDPA 1x7.2 Mbps (10 code w shared scheduler)• CE Requirement
• IuB Requirement– HSDPA ATM level throughput max 8,350 kbps ~ 5 E1(7% control plane)– IuB requirement for HSDPA only traffic w/o R99 = 5 E1– Recommended IuB size = 7 E1
5 E1 for HSDPA 2 E1 for R99
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Node B RequirementsHSDPA 3x7.2 Mbps (10 code w/o shared scheduler)
• IuB Requirement– HSDPA ATM level throughput max 3x8,350 kbps = 25,050 kbps (6% control plane)– From HSDPA counters, ratio of WBTS level throughput to sum cell throughput (HSDPA
overbooking) is 48% 48%*25,050 = 12,024 kbps ~ 7 E1– IuB requirement for HSDPA only traffic w/o R99 = 7 E1– Recommended IuB size = 10 E1
7 E1 for HSDPA2 E1 for R991 E1 for HSDPA overbooking buffer
• CE Requirement
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Node B RequirementsHSDPA 3x14.4 Mbps (15 code w/o shared scheduler)
• IuB Requirement– HSDPA ATM level throughput max 3x16,700 kbps = 50,100 kbps (6% control plane)– From HSDPA counters, ratio of WBTS level throughput to sum cell throughput (HSDPA
overbooking) is 48% 48%*50,100 = 24,048 kbps ~ 14 E1– IuB requirement for HSDPA only traffic w/o R99 = 14 E1– Recommended IuB size = 18 E1
14 E1 for HSDPA2 E1 for R992 E1 for HSDPA overbooking buffer
• CE Requirement
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