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HUAWEI TECHNOLOGIES CO., LTD. Page 1 Jul 23 rd 2007 HUAWEI TECHNOLOGIES CO., LTD. UMTS Dimensioning Workshop

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Page 1: UMTS Dimensioning

HUAWEI TECHNOLOGIES CO., LTD. Page 1

Jul 23rd 2007

HUAWEI TECHNOLOGIES CO., LTD.

UMTS Dimensioning Workshop

Page 2: UMTS Dimensioning

HUAWEI TECHNOLOGIES CO., LTD. Page 2

UMTS Network Dimensioning Overview

Logical Interface Dimensioning

Page 3: UMTS Dimensioning

HUAWEI TECHNOLOGIES CO., LTD. Page 3

UMTS Network Architecture (Rel. 4)

F

HSS(HLR)

HSS(HLR)

C

AU

C

Gf

SGSNSGSN

Gr

Gn

Gc

Gi

Gd

H SMS

Co-operatingNetworksUser Equipment Radio Access Network Core Network

Note: Not all interfaces areshown and named

BTSBTS

Um

Abis

BSS

F DC

EIR

AU

C

A

GMSCServer

GMSCServer

Gf

Gn

Gb Gr

SGSNSGSN

GGSNGGSN

Gs

Gc

Gd

Iu-CS

MGWMGW

H

Gp

Iu-PS

RNCNodeB

Uu

Iur

Iub

RNCNodeBIub

RNS

RNS

UTRANUTRANIur

ME

Cu

or

SIM-ME i/f

USIM

SIMMS

ISDNPSTNPSPDNCSPDNPDN:- Intranet- Extranet- Internet

MSC/VLRServer

MSC/VLRServer SCFSCF

MESIM-ME i/f

SIM

MS

MGWMGW

MSC/VLRServer

MSC/VLRServerMc

Nb

Nc

MGWMGWNb Mc

Mc

EGNc

T-SGW

T-SGW

BSC

CSMS

SCFSCF

PSPS

CSCS

Page 4: UMTS Dimensioning

HUAWEI TECHNOLOGIES CO., LTD. Page 4

UMTS Network Dimensioning Step

Traffic ProfileTraffic Profile

AssumptionsAssumptions

PS SignalingPS Signaling

RNCRNC

NodeBNodeB

PS TrafficPS Traffic

MSC ServerMSC Server

MGWMGW

HLRHLR

SGSNSGSN

GGSNGGSN

CGCG

BGDNS DHCPFirewallRouter……

BGDNS DHCPFirewallRouter……

InputInput

OutputOutput

UTRAN Dimensioning

CS Dimensioning

PS Dimensioning

TransmissionTransmission

Network Scale

Network Scale

IurIur

IubIub

CS SignalingCS Signaling

CS TrafficCS Traffic

Iu-CSIu-CS

Iu-PSIu-PS

Channel ElementChannel Element

Page 5: UMTS Dimensioning

HUAWEI TECHNOLOGIES CO., LTD. Page 5

UMTS Network Dimensioning Overview

Logical Interface Dimensioning

Page 6: UMTS Dimensioning

HUAWEI TECHNOLOGIES CO., LTD. Page 6

Iub Interface DimensioningRNC

NodeB

Page 7: UMTS Dimensioning

HUAWEI TECHNOLOGIES CO., LTD. Page 7

Iub Interface Dimensioning Procedure - Traffic Profile for UTRANIub Interface Dimensioning Procedure - Traffic Profile for UTRANNetwork Parameter Unit Value Comment

Voice (12.2kbps) Traffic per Subs. in BH mErl 25

Voice active factor - 60%

CS Data (64kbps) Traffic per Subs. in BH mErl 2

CS Data Active Factor 100%

% CS Data Subs. - 20%

PS Data-64kbps/64kbps Traffic per Subs. in BH Kbps 0.04 UL: 64kbps, DL: 64kbps

PS Data-64kbps/128kbps Traffic per Subs. in BH Kbps 0.06 UL: 64kbps, DL: 128kbps

PS Data-64kbps/384kbps Traffic per Subs. in BH Kbps 0.08 UL: 64kbps, DL: 384kbps

% PS Data Subs. 100%

Average HSDPA throughput per HSDPA Subs. Kbps 1.0

Average HSUPA throughput per HSUPA Subs. Kbps 0.45

%HSxPA Subs 5%

PS Traffic Ratio for uplink and downlink - 1:4

PS Traffic Peak Ratio - 1.2

Data Retransmission=1% - 1%

Total number of UTRAN subscriber - 50000

Type of NodeB - S1/1/1

Number of NodeB - 100

Soft handover factor - 30%

GOS in Uu Interface - 2%

Page 8: UMTS Dimensioning

HUAWEI TECHNOLOGIES CO., LTD. Page 8

Iub Interface DimensioningIub Interface Dimensioning

Iub interface capacity factors: Protocol stack Overheads Soft handover factor for macro diversity Data Retransmission Ratio Engineering margin for Peak capacity Transmission Overhead

Iub Interface ThroughputIub Interface Throughput

Control Plane Throughput

Control Plane Throughput

User Plane ThroughputUser Plane Throughput

T_NBAPT_NBAP T_ALCAPT_ALCAP T_O&MT_O&M T_CCHT_CCH T_DCHT_DCHT_FP

Control FrameT_FP

Control Frame

T_CS Data

T_CS DataT_VoiceT_Voice

T_PS Data

T_PS Data T_ Association

SignalingT_ Association

Signaling

T_ HSUPA DataT_ HSUPA Data T_ HSDPA DataT_ HSDPA Data

T_HSxPA Service

T_HSxPA Service

Page 9: UMTS Dimensioning

HUAWEI TECHNOLOGIES CO., LTD. Page 9

Iub Interface Protocol Stack (ATM)

L1 ( PHY )

AAL5

SSCOP

SSCF-UNI

NBAP

AAL5

SSCOP

SSCF-UNI

STC

ALCAP

AAL2

CP

CH

FP

US

CH

FP

DS

CH

FP

PC

H F

P

FA

CH

FP

RA

CH

FP

DC

HF

P

MAC

RLC

ATM

RRC BMC PDCP

Control PlaneControl Plane User PlaneUser Plane

Radio Network

Transport Network

RLC

MAC

ATM

PHY

FP

AAL2

Service Bit Rate

Bit Rate Under ATM

Traffic TypeService Bit Rate (kbps)

Throughput in ATM Layer

(kbps)

Usage Factor

CS Voice 12.2 18.55 66%

CS Data 64 78.18 82%

PS64K 64 81.71 78%

PS128K 128 161.21 79%

PS384K 384 481.42 80%

HSDPA 768 938.1 82%

HSUPA 384 484.07 79%

Associated Signaling

3.4 5.97 57%

FACH (Data) 32 47.7 67%

PCH 32 37.1 86%

RACH 32 53.89 59%

Page 10: UMTS Dimensioning

HUAWEI TECHNOLOGIES CO., LTD. Page 10

Physical layer + Peak Capacity

+a% +b% +c%

Data Retransmission ( Only for PS ) e.g. 1% Engineering Margin

e.g. 10-20%

Iub Interface Capacity Factor (ATM)Iub Interface Capacity Factor (ATM)

SHO Factore.g. 30-40%

Signalling + O&M (10%)

CCH Traffic

FP & AAL2/AAL5Overhead

ATM Overhead

Physical Port

+d%

Transmission Overhead(e.g. E1, STM-1…)

DCH Traffic+macro diversity

HSxPA Traffic

Page 11: UMTS Dimensioning

HUAWEI TECHNOLOGIES CO., LTD. Page 11

Iub Interface Dimensioning Procedure (ATM)- CS PartIub Interface Dimensioning Procedure (ATM)- CS Part

Voice Traffic= Voice (Erl) * Voice Bit Rate * VAF= 0.025 * 12.2 * 60% = 0.183 kbps

Voice Traffic= Voice (Erl) * Voice Bit Rate * VAF= 0.025 * 12.2 * 60% = 0.183 kbps

Protocol stack OverheadProtocol stack Overhead

Voice Traffic under ATM Layer= Voice Traffic / Usage Factor= 0.183 / 66% = 0.277 kbps

Voice Traffic under ATM Layer= Voice Traffic / Usage Factor= 0.183 / 66% = 0.277 kbps

T_Voice/Subs. = Voice Traffic under ATM Layer *(1+SHO) = 0.277 * (1+30%) = 0.36 kbps

T_Voice/Subs. = Voice Traffic under ATM Layer *(1+SHO) = 0.277 * (1+30%) = 0.36 kbps

SHO factor = 30%SHO factor = 30%

CS Data Traffic= CS Data (Erl) * CS Data Service Bit Rate * CS Data Active Factor= 0.002 * 64 * 100% = 0.128 kbps

CS Data Traffic= CS Data (Erl) * CS Data Service Bit Rate * CS Data Active Factor= 0.002 * 64 * 100% = 0.128 kbps

Protocol stack OverheadProtocol stack Overhead

CS Data Traffic under ATM Layer= CS Data Traffic / Usage Factor= 0.128 / 82% = 0.156 kbps

CS Data Traffic under ATM Layer= CS Data Traffic / Usage Factor= 0.128 / 82% = 0.156 kbps

T_ CS Data/Subs. = CS Data Traffic under ATM Layer *(1+SHO) = 0.156 * (1+30%) = 0.203 kbps

T_ CS Data/Subs. = CS Data Traffic under ATM Layer *(1+SHO) = 0.156 * (1+30%) = 0.203 kbps

SHO factor = 30%SHO factor = 30%

INPUT

• 25 mErl (Voice-12.2kbps)• 2 mErl (CS Data-64kbps)• SHO = 30%• Voice Active Factor (VAF) = 60%• CS Data Active Factor = 100%• Subs./NodeB = 500

• 25 mErl (Voice-12.2kbps)• 2 mErl (CS Data-64kbps)• SHO = 30%• Voice Active Factor (VAF) = 60%• CS Data Active Factor = 100%• Subs./NodeB = 500

Page 12: UMTS Dimensioning

HUAWEI TECHNOLOGIES CO., LTD. Page 12

Iub Interface Dimensioning Procedure (ATM)- CS Part (Cont.)Iub Interface Dimensioning Procedure (ATM)- CS Part (Cont.)

T_Voice/NodeB= T_Voice/Subs. * Voice Subs./NodeB= 0.36 * 500 = 180 kbps = 0.18 Mbps

T_Voice/NodeB= T_Voice/Subs. * Voice Subs./NodeB= 0.36 * 500 = 180 kbps = 0.18 Mbps

% Voice Subs. = 100%% Voice Subs. = 100%

Voice Subs./NodeB= Subs./ NodeB * % Voice Subs.= 500 * 100% = 500

Voice Subs./NodeB= Subs./ NodeB * % Voice Subs.= 500 * 100% = 500

T_ CS Data/NodeB= T_ CS Data/Subs. * CS Data Subs./NodeB= 0.203 * 100 = 20.3 kbps = 0.02 Mbps

T_ CS Data/NodeB= T_ CS Data/Subs. * CS Data Subs./NodeB= 0.203 * 100 = 20.3 kbps = 0.02 Mbps

% CS Data Subs. = 20%% CS Data Subs. = 20%

CS Data Subs./NodeB= Subs./ NodeB * % CS Data Subs.= 500 * 20% = 100

CS Data Subs./NodeB= Subs./ NodeB * % CS Data Subs.= 500 * 20% = 100

End of Voice End of CS Data

Page 13: UMTS Dimensioning

HUAWEI TECHNOLOGIES CO., LTD. Page 13

Iub Interface Dimensioning Procedure (ATM)- CS Part

Active

Silent

Overhead

Overhead

12.2kbps

Total 4.5kbps

Total 18.55kbps

Voice Active

Voice Silent

In Huawei’s case, the throughput for Silent parts is neglected due to the small value. Thus, in slide Page13, only the active voice is considered.

Average Voice Bit Rate under ATM Layer= Voice Bit Rate_ Active * VAF + Voice Bit Rate_ Silent * (1-VAF)=18.55*60%+4.5*40%=12.93kbps

Note for Voice Traffic Dimensioning

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HUAWEI TECHNOLOGIES CO., LTD. Page 14

Iub Interface Dimensioning Procedure (ATM) - PS PartIub Interface Dimensioning Procedure (ATM) - PS Part

PS Data-64 Traffic (DL)under ATM Layer= PS Data-64 Traffic (DL)/Usage Factor= 0.032/78% = 0.041 kbps

PS Data-64 Traffic (DL)under ATM Layer= PS Data-64 Traffic (DL)/Usage Factor= 0.032/78% = 0.041 kbps

Total PS Data Traffic (DL) under ATM Layer= 0.041 + 0.061 + 0.08 = 0.182 kbpsTotal PS Data Traffic (DL) under ATM Layer= 0.041 + 0.061 + 0.08 = 0.182 kbps

PS Data-128 Traffic (DL)under ATM Layer= PS Data-128 Traffic (DL)/Usage Factor= 0.048/79% = 0.061 kbps

PS Data-128 Traffic (DL)under ATM Layer= PS Data-128 Traffic (DL)/Usage Factor= 0.048/79% = 0.061 kbps

PS Data-384 Traffic (DL)under ATM Layer= PS Data-384 Traffic (DL)/FP&AAL2 Usage Factor= 0.064/80% = 0.08 kbps

PS Data-384 Traffic (DL)under ATM Layer= PS Data-384 Traffic (DL)/FP&AAL2 Usage Factor= 0.064/80% = 0.08 kbps

FP&AAL2&ATM OverheadFP&AAL2&ATM Overhead

INPUT

PS Data-64 Traffic for DL = 0.04 * 80% = 0.032 kbps PS Data-64 Traffic for DL = 0.04 * 80% = 0.032 kbps

PS Data-128 Traffic for DL = 0.06 * 80% = 0.048 kbps PS Data-128 Traffic for DL = 0.06 * 80% = 0.048 kbps

PS Data-384 Traffic for DL = 0.08 * 80% = 0.064 kbps PS Data-384 Traffic for DL = 0.08 * 80% = 0.064 kbps

• PS Data-64 Traffic/Subs. = 0.04kbps• PS Data-128 Traffic/Subs. = 0.06kbps• PS Data-384 Traffic/Subs. = 0.08kbps• PS Traffic Ratio for UL and DL = 1:4• PS Traffic Peak Ratio = 1.2• % PS Data Subs.=100%• Data Retransmission=1%• Subs./NodeB=500

• PS Data-64 Traffic/Subs. = 0.04kbps• PS Data-128 Traffic/Subs. = 0.06kbps• PS Data-384 Traffic/Subs. = 0.08kbps• PS Traffic Ratio for UL and DL = 1:4• PS Traffic Peak Ratio = 1.2• % PS Data Subs.=100%• Data Retransmission=1%• Subs./NodeB=500

Page 15: UMTS Dimensioning

HUAWEI TECHNOLOGIES CO., LTD. Page 15

Total PS Data Traffic with SHO= Total PS Data Traffic (DL) under ATM Layer * (1+ SHO) = 0.182 * (1+30%) = 0.237 kbps

Total PS Data Traffic with SHO= Total PS Data Traffic (DL) under ATM Layer * (1+ SHO) = 0.182 * (1+30%) = 0.237 kbps

SHO factor = 30%SHO factor = 30%

T_ PS Data/Subs.= Total PS Data Traffic with SHO * PS Traffic Peak Ratio * (1 + Data Retransmission)= 0.237 * 1.2 * ( 1 + 1%) = 0.287 kbps

T_ PS Data/Subs.= Total PS Data Traffic with SHO * PS Traffic Peak Ratio * (1 + Data Retransmission)= 0.237 * 1.2 * ( 1 + 1%) = 0.287 kbps

PS Traffic Peak Ratio = 1.2Data Retransmission = 1%PS Traffic Peak Ratio = 1.2Data Retransmission = 1%

Iub Interface Dimensioning Procedure (ATM) - PS Part (Cont.)Iub Interface Dimensioning Procedure (ATM) - PS Part (Cont.)

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HUAWEI TECHNOLOGIES CO., LTD. Page 16

T_ PS Data / NodeB= T_PS Data/Subs. * PS Data Subs./ NodeB = 0.287 * 500 /1000 = 0.144 Mbps

T_ PS Data / NodeB= T_PS Data/Subs. * PS Data Subs./ NodeB = 0.287 * 500 /1000 = 0.144 Mbps

PS Data Subs./NodeB = Subs./NodeB * % PS Data Subs.= 500 * 100% = 500

PS Data Subs./NodeB = Subs./NodeB * % PS Data Subs.= 500 * 100% = 500

% PS Data Subs. = 100% (Assumption)% PS Data Subs. = 100% (Assumption)

End of PS

Iub Interface Dimensioning Procedure (ATM) - PS Part (Cont.)Iub Interface Dimensioning Procedure (ATM) - PS Part (Cont.)

Page 17: UMTS Dimensioning

HUAWEI TECHNOLOGIES CO., LTD. Page 17

Iub Interface Dimensioning Procedure (ATM)–HSxPA PartIub Interface Dimensioning Procedure (ATM)–HSxPA Part

HSDPA under ATM Layer= HSDPA per HSDPA Subs./ Usage Factor= 1/82% = 1.220 kbps

HSDPA under ATM Layer= HSDPA per HSDPA Subs./ Usage Factor= 1/82% = 1.220 kbps

Total HSxPA Traffic under AAL2 Layer= 1.220+ 0.570 = 1.79 kbpsTotal HSxPA Traffic under AAL2 Layer= 1.220+ 0.570 = 1.79 kbps

HSUPA under ATM Layer= HSUPA per HSUPA Subs./ Usage Factor= 0.45/79% = 0.570 kbps

HSUPA under ATM Layer= HSUPA per HSUPA Subs./ Usage Factor= 0.45/79% = 0.570 kbps

FP&AAL2&ATM OverheadFP&AAL2&ATM Overhead

INPUT

• HSDPA per HUDPA Subs.=1.0kbps• HSUPA per HSUPA Subs.=0.45kbps • PS Traffic Peak Ratio = 1.2• PS Traffic Peak Ratio = 1.2• Data Retransmission=1% • %HSxPA Subs.=5%• Subs./NodeB=500

• HSDPA per HUDPA Subs.=1.0kbps• HSUPA per HSUPA Subs.=0.45kbps • PS Traffic Peak Ratio = 1.2• PS Traffic Peak Ratio = 1.2• Data Retransmission=1% • %HSxPA Subs.=5%• Subs./NodeB=500

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HUAWEI TECHNOLOGIES CO., LTD. Page 18

T_ HSxPA Data / HSxPA Subs.= Total HSxPA Traffic under ATM Layer * Traffic Peak Ratio * (1 + Data Retransmission) = 1.79 * 1.2 * ( 1 + 1%) = 2.169 kbps

T_ HSxPA Data / HSxPA Subs.= Total HSxPA Traffic under ATM Layer * Traffic Peak Ratio * (1 + Data Retransmission) = 1.79 * 1.2 * ( 1 + 1%) = 2.169 kbps

PS Traffic Peak Ratio = 1.2Data Retransmission = 1%PS Traffic Peak Ratio = 1.2Data Retransmission = 1%

T_ HSxPA Data / NodeB= T_ HSxPA Data/ HSxPA Subs. * HSxPA Subs. / NodeB= 2.169 * 25 /1000 = 0.054 Mbps

T_ HSxPA Data / NodeB= T_ HSxPA Data/ HSxPA Subs. * HSxPA Subs. / NodeB= 2.169 * 25 /1000 = 0.054 Mbps

HSxPA Subs./NodeB = Subs./NodeB * % PS Data Subs.= 500 * 5% = 25

HSxPA Subs./NodeB = Subs./NodeB * % PS Data Subs.= 500 * 5% = 25

% HSxPA Subs. = 5% (Assumption)% HSxPA Subs. = 5% (Assumption)

End of HSxPA

Iub Interface Dimensioning Procedure (ATM)–HSxPA Part (Cont.)Iub Interface Dimensioning Procedure (ATM)–HSxPA Part (Cont.)

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HUAWEI TECHNOLOGIES CO., LTD. Page 19

Iub Interface Dimensioning Procedure (ATM)-Common Channel TrafficIub Interface Dimensioning Procedure (ATM)-Common Channel Traffic

INPUT

•1 FACH (Data) / Cell• 1 RACH / Cell• 1 PCH / Cell• NodeB 1/1/1

•1 FACH (Data) / Cell• 1 RACH / Cell• 1 PCH / Cell• NodeB 1/1/1

T_ FACH (Data)/Cell= 47.7 * 1 = 47.7 kbps

T_ FACH (Data)/Cell= 47.7 * 1 = 47.7 kbps

T_ PCH/Cell= 37.1 * 1 = 37.1 kbps

T_ PCH/Cell= 37.1 * 1 = 37.1 kbps

T_ RACH/Cell= 53.89 * 1 = 53.89 kbps

T_ RACH/Cell= 53.89 * 1 = 53.89 kbps

CCH Bit rate under ATM Layer * No. of CCH/CellCCH Bit rate under ATM Layer * No. of CCH/Cell

T_ CCH (DL)/Cell= 47.7 + 37.1= 84.8kbpsT_ CCH (DL)/Cell= 47.7 + 37.1= 84.8kbps

T_ CCH (UL)/Cell= T_RACH/Cell = 53.89 kbpsT_ CCH (UL)/Cell= T_RACH/Cell = 53.89 kbps

T_CCH / Cell= MAX ( T_CCH (Downlink) / Cell, T_CCH (Uplink) / Cell )= MAX ( 84.8, 53.89) = 84.8 kbps

T_CCH / Cell= MAX ( T_CCH (Downlink) / Cell, T_CCH (Uplink) / Cell )= MAX ( 84.8, 53.89) = 84.8 kbps

T_CCH / NodeB= T_CCH/Cell * Cell / NodeB= 84.8 kbps * 3 = 254.4kbps = 0.254 Mbps

T_CCH / NodeB= T_CCH/Cell * Cell / NodeB= 84.8 kbps * 3 = 254.4kbps = 0.254 Mbps

3 Cells / NodeB3 Cells / NodeB

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HUAWEI TECHNOLOGIES CO., LTD. Page 20

Iub Interface Dimensioning Procedure (ATM) - SummaryIub Interface Dimensioning Procedure (ATM) - Summary

T_ VoiceT_ Voice

T_ CS DataT_ CS Data

T_ PS DataT_ PS Data

T_ HSxPA DataT_ HSxPA Data

T_ signalling + OM= 0.065 MbpsT_ signalling + OM= 0.065 Mbps

Iub Traffic (Main)= 0.18 + 0.02 + 0.144+ 0.054 + 0.254 = 0.652Mbps

Iub Traffic (Main)= 0.18 + 0.02 + 0.144+ 0.054 + 0.254 = 0.652Mbps

10%10%

Iub Interface Throughput / NodeB

= 0.717 Mbps

Iub Interface Throughput / NodeB

= 0.717 Mbps

Iub Interface Throughput/ NodeB

= 0.717 * (1+20%) = 0.86 Mbps

Iub Interface Throughput/ NodeB

= 0.717 * (1+20%) = 0.86 Mbps

Engineering Margin = 20%Engineering Margin = 20%

Iub Interface Throughput/ RNC

= 0.86 * 100 = 86 Mbps

Iub Interface Throughput/ RNC

= 0.86 * 100 = 86 Mbps

# NodeB/RNC = 100# NodeB/RNC = 100

T_ CCHT_ CCH

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HUAWEI TECHNOLOGIES CO., LTD. Page 21

Iur Interface DimensioningRNC

RNC

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HUAWEI TECHNOLOGIES CO., LTD. Page 22

Iur Interface Dimensioning ProcedureIur Interface Dimensioning Procedure

Iub Interface Throughput/ RNC

= 86 Mbps

Iub Interface Throughput/ RNC

= 86 Mbps

10%10%

Iur Interface Throughput/ RNC

= 86 * 10% = 8.6 Mbps

Iur Interface Throughput/ RNC

= 86 * 10% = 8.6 Mbps

Throughput in Iur interface Estimated to be 10% of Iub interface throughput

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HUAWEI TECHNOLOGIES CO., LTD. Page 23

Iu-CS Interface DimensioningRNC

MGW

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HUAWEI TECHNOLOGIES CO., LTD. Page 24

Iu-CS Interface Dimensioning (ATM)Iu-CS Interface Dimensioning (ATM)

Iu-CS Interface Throughput

Iu-CS Interface Throughput

Control Plane Throughput 1.28Mbps/sR

Control Plane Throughput 1.28Mbps/sR

User Plane Throughput 33.9Mb

/sR

User Plane Throughput 33.9Mb

/sR

T_ Control planeT_ Control plane T_ VoiceT_ Voice T_ CS DataT_ CS Data

Iu CS throughput factors: Signalling Overhead in control plane Protocol Overhead in user plane

Iuup Overhead AAL2 Overhead ATM Cell Overhead

60% AMR

Page 25: UMTS Dimensioning

HUAWEI TECHNOLOGIES CO., LTD. Page 25

Iu-CS Interface Protocol Stack (ATM)

Service Type

CS Voice CS Data

Service bit rate 12.2Kbps 64Kbps

IUUP Usage Factor 88.57% 90.91%

AAL2 Usage Factor 90.19% 91.67%

ATM Usage Factor 90.6% 90.6%

subtotal of protocol Usage Factor

72.37% 75.50%

Extension Ratio 1.38 1.32

IUUP

ATM

PHY

AAL2

Service Bit Rate

Bit Rate under ATM

Note: 1. Subtotal of Usage Factor = IUUP Usage Factor* AAL2 Usage Factor * ATM Usage Factor2. Extension Ratio = 1 / Usage Factor

L1 ( PHY )

AAL5

SSCOP

SSCF-NNI

MTP3-b

AAL5

SSCOP

SSCF-NNI

MTP3-b

AAL2

IUUP

ATM

SCCP

RANAP

Q.2150.1

Control PlaneControl Plane User PlaneUser Plane

Q.2630.2

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HUAWEI TECHNOLOGIES CO., LTD. Page 26

Iu-CS Interface Dimensioning Procedure (ATM) - User PlaneIu-CS Interface Dimensioning Procedure (ATM) - User Plane

Voice Traffic= Voice (Erl) * voice bit rate * VAF= 0.025 * 12.2 * 60% = 0.183 kbps

Voice Traffic= Voice (Erl) * voice bit rate * VAF= 0.025 * 12.2 * 60% = 0.183 kbps

Protocol stack OverheadProtocol stack Overhead

Voice Traffic under ATM= Voice Traffic * Extension Ratio of Voice= 0.183 * 1.38 = 0.253 kbps

Voice Traffic under ATM= Voice Traffic * Extension Ratio of Voice= 0.183 * 1.38 = 0.253 kbps

CS Data Traffic= CS Data (Erl) * CS Data service bit rate * CS Data active factor = 0.002 * 64 * 100% = 0.128 kbps

CS Data Traffic= CS Data (Erl) * CS Data service bit rate * CS Data active factor = 0.002 * 64 * 100% = 0.128 kbps

Protocol stack OverheadProtocol stack Overhead

CS Data Traffic under ATM= CS Data Traffic * Extension Ratio of CS Data= 0.128 * 1.32 = 0.169 kbps

CS Data Traffic under ATM= CS Data Traffic * Extension Ratio of CS Data= 0.128 * 1.32 = 0.169 kbps

INPUT

• 25 mErl (voice-12.2kbps)• 2 mErl (CS Data-64kbps)• Voice active factor = 60%• CS Data active factor = 100%• Subs./RNC = 50000 max 62500 16 en 1rnc•% CS Data Subs=20%

• 25 mErl (voice-12.2kbps)• 2 mErl (CS Data-64kbps)• Voice active factor = 60%• CS Data active factor = 100%• Subs./RNC = 50000 max 62500 16 en 1rnc•% CS Data Subs=20%

T_ user plane/ RNC.= T _voice + T _CS Data = 0.253 * 50,000 + 0.169 * 50,000 * 20% = 14.34 Mbps

T_ user plane/ RNC.= T _voice + T _CS Data = 0.253 * 50,000 + 0.169 * 50,000 * 20% = 14.34 Mbps

End of User Plane

20% CS_ Data Subs.20% CS_ Data Subs.

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HUAWEI TECHNOLOGIES CO., LTD. Page 27

Iu-CS Interface Dimensioning Procedure (ATM) - SummaryIu-CS Interface Dimensioning Procedure (ATM) - Summary

T_ VoiceT_ Voice

T_ CS DataT_ CS Data

T_ control plane= 0.14 MbpsT_ control plane= 0.14 Mbps

T_ User Plane= 14.34 MbpsT_ User Plane= 14.34 Mbps

1%1%

Iu-CS Interface Throughput/RNC

= 14.34 + 0.14 = 14.48 Mbps

Iu-CS Interface Throughput/RNC

= 14.34 + 0.14 = 14.48 Mbps

Procedure

MO CALL

MT CALL

Location Update

IMSI Detach

CS Relocation (Originated)

CS Relocation (Terminated)

MO SMS

MT SMS

Signalling Overhead in Iu CS interface Estimated to be 1-2% compared to user Data

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HUAWEI TECHNOLOGIES CO., LTD. Page 28

IuCS Configuration—User Plane

For example:

Transmission Bandwidth estimated: Total throughput is

40000kbps

If we keep 100% more bandwidth for margin, then the total

bandwidth is 40000*(1+100%)= 80000kbps

According to ATM protocol stack: One ATM path is just support

248 CID , The traffic for one AAL2PATH:

Roundup(248cid*1600,0)=4mbps

Each AAL2 Path,PCR=1.2*SCR, RTVBR, CDVT=10240*0.1us

Total PATH Number: Roundup(80000/4000,0)=20

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HUAWEI TECHNOLOGIES CO., LTD. Page 29

IP SSCOP

AAL5

SCTP

MTP3-B M3UA

SCCP

M3UA

RANAP Iu UP Protocol Layer

Tra

nsp

ort

Net

wo

rk L

ayer

Physical Layer

Transport User

Network Plane

Control Plane User Plane

Transport User

Network Plane

Transport Network

Control Plane

Rad

io N

etw

ork

Lay

er

AAL5

IP

UDP

GTP-U

Physical Layer

ATM Data Link

IP

SCTP

Data Link ATM

IP

UDP

GTP-U SSCF-NNI

IU-CS(ATM): MTP-3B/SSCF/SSCOP/AAL5/ATM /Physical

IU-PS(IP): M3UA/SCTP/IP/MAC/Physical

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Iu-CS Interface Dimensioning Procedure– Control Plane

Signaling Procedure

MO-CALLMO-CALL

MT-CALLMT-CALL

MO-SMSMO-SMS

location updatelocation update

IMSI Detach IMSI Detach

Iu-CS RelocationIu-CS Relocation

MT-SMSMT-SMS

Others….Others….

Message Throughput (Bytes/Hour)Message Throughput (Bytes/Hour)

Signal Throughput per

Subscriber (Kbps)

Signal Throughput per

Subscriber (Kbps)

Message Throughput (Bytes/Hour)Message Throughput (Bytes/Hour)

Message Throughput (Bytes/Hour)Message Throughput (Bytes/Hour)

Message Throughput (Bytes/Hour)Message Throughput (Bytes/Hour)

Message Throughput (Bytes/Hour)Message Throughput (Bytes/Hour)

Message Throughput (Bytes/Hour)Message Throughput (Bytes/Hour)

Message Throughput (Bytes/Hour)Message Throughput (Bytes/Hour)

Message Throughput (Bytes/Hour)Message Throughput (Bytes/Hour)

Iu-CS Signal ThroughputIu-CS Signal Throughput

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Message Length (ATM ) (Bytes):

(MTP MSU length + 12 + 8)/ 48 * 53

ATM:- / 48 * 53

AAL5:- 8

SAAL+MTP-3B - 12

Iu-CS Interface Lay Consumption

Page 32: UMTS Dimensioning

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Iu-PS Interface DimensioningRNC

SGSN

Page 33: UMTS Dimensioning

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Iu-PS Interface DimensioningIu-PS Interface Dimensioning

Iu-PS Interface ThroughputIu-PS Interface Throughput

Control Plane Throughput

Control Plane Throughput

User Plane ThroughputUser Plane Throughput

T _Control PlaneT _Control Plane T _User PlaneT _User Plane

Iu-PS throughput factors: Signalling Overhead in control plane Protocol Overhead in user plane Packet size Peak Ratio

Page 34: UMTS Dimensioning

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Iu-PS Interface Dimensioning Procedure (IP) - SummaryIu-PS Interface Dimensioning Procedure (IP) - Summary

T_ control planeT_ control plane

T_ User PlaneT_ User Plane

1%1%Iu-PS Interface Throughput

/RNCIu-PS Interface Throughput

/RNC

Procedure

Attach

Detach

Service Request

PDP Activate

PDP Deactivate

PDP Modification

Paging

Iu Release

Routing Area Update

Signalling Overhead in Iu PS interface Estimated to be 1-2% compared to user Data

Page 35: UMTS Dimensioning

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Iu-PS Interface Protocol Stack (IP over Ethernet)

Service Bit Rate

Bit Rate under IP over EthernetMAC

GTP-U

PHY

UDP

IP

Payload (Bytes)

GTP-U 8

UDP 8

IP 20

MAC 18

Total 56

Assume: GTP packet length is X bytes

Extension Ratio (ER) = (X + 56)/X

L1 ( PHY )

IP

SCTP

M3UA

IP

Data Link

SCCP

RANAP

UDP

IUUPControl PlaneControl Plane User PlaneUser Plane

Note: Only the protocol stack and overhead ratio are provided for reference.

Page 36: UMTS Dimensioning

HUAWEI TECHNOLOGIES CO., LTD. Page 36

Iu-PS Interface Dimensioning Procedure– Control Plane

Signaling Procedure

AttachAttach

DetachDetach

PDP ModificationPDP Modification

PDP ActivatePDP Activate

PDP DeactivatePDP Deactivate

Service RequestService Request

Routing Area UpdateRouting Area Update

Others….Others….

Message Throughput (Bytes/Hour)Message Throughput (Bytes/Hour)

Signal Throughput per

Subscriber (Kbps)

Signal Throughput per

Subscriber (Kbps)

Message Throughput (Bytes/Hour)Message Throughput (Bytes/Hour)

Message Throughput (Bytes/Hour)Message Throughput (Bytes/Hour)

Message Throughput (Bytes/Hour)Message Throughput (Bytes/Hour)

Message Throughput (Bytes/Hour)Message Throughput (Bytes/Hour)

Message Throughput (Bytes/Hour)Message Throughput (Bytes/Hour)

Message Throughput (Bytes/Hour)Message Throughput (Bytes/Hour)

Message Throughput (Bytes/Hour)Message Throughput (Bytes/Hour)

Iu-PS Signal ThroughputIu-PS Signal Throughput

Page 37: UMTS Dimensioning

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Iu-PS(IP) Interface Layer Consumption

Overhead (LAN)= M3UA + SCTP + IP + Eth

Payload (Bytes)

M3UA 36

SCTP 24

IP 20

ETHERNET 38

Msg Length = MTP MSU+ 36 + 24 + 20 + 38

Payload (Bytes)

M3UA 36

SCTP 24

IP 20

MPLS 4

TE+FRR 4

VPN 4

PPP 8

Overhead (WAN)= M3UA + SCTP + IP +

MPLS+TE+FRR+VPN+PPP

Msg Length = MTP MSU + 36 + 24 + 20 + 20

Page 38: UMTS Dimensioning

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Thank You

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