umts ran14.0 dimensioning rules(20120706)

UMTS RAN14.0

Dimensioning Rules

Issue 01

Date 2012-07-06

HUAWEI TECHNOLOGIES CO., LTD.

Issue 01 (2012-07-06) Huawei Proprietary and Confidential

Copyright Huawei Technologies Co., Ltd.

i

Copyright Huawei Technologies Co., Ltd. 2012. All rights reserved.

No part of this document may be reproduced or transmitted in any form or by any means without prior

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and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.

All other trademarks and trade names mentioned in this document are the property of their respective

holders.

Notice

The purchased products, services and features are stipulated by the contract made between Huawei and

the customer. All or part of the products, services and features described in this document may not be

within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements,

information, and recommendations in this document are provided "AS IS" without warranties, guarantees

or representations of any kind, either express or implied.

The information in this document is subject to change without notice. Every effort has been made in the

preparation of this document to ensure accuracy of the contents, but all statements, information, and

recommendations in this document do not constitute a warranty of any kind, express or implied.

Huawei Technologies Co., Ltd.

Address: Huawei Industrial Base

Bantian, Longgang

Shenzhen 518129

People's Republic of China

Website: http://www.huawei.com

Email: [email protected]

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Dimensioning Rules Change History



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Change History

SN Date Revision Description Version Author

2012-7-6 RAN14.0 version Yaoyao 42671

Liyuanjun 50545

Wangyanling 00200183

Yueguojun 37848

UMTS RAN14.0

Dimensioning Rules Contents



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Contents

1 Introduction to UMTS RAN Dimensioning ............................................................................ 1

1.1 Basic Concepts ................................................................................................................................................. 1

1.2 Dimensioning relevant factors.......................................................................................................................... 2

1.3 Impact of the Penetration Rate of Smart Phones and User Behaviors on the Traffic Model ............................ 2

2 NodeB Dimensioning Guide ...................................................................................................... 4

2.1 NodeB V100R014 ............................................................................................................................................ 4

2.2 NodeB V200R014 .......................................................................................................................................... 24

2.3 Capacity Dimensioning Procedure ................................................................................................................. 48

2.4 CE Dimensioning Procedure .......................................................................................................................... 58

2.5 Iub Dimensioning Procedure .......................................................................................................................... 65

2.6 CNBAP Dimensioning Procedure .................................................................................................................. 73

3 RNC Dimensioning Guide........................................................................................................ 75

3.1 BSC6900 Introduction.................................................................................................................................... 75

3.2 BSC6900 Configuration Procedure ................................................................................................................ 83

3.3 Calculation of the Initial Network Capacity ................................................................................................... 84

3.4 Initial Network Hardware Configuration ....................................................................................................... 93

3.5 Mixed Insertion of Boards ............................................................................................................................ 107

3.6 Impact of Hardware Faults on Configured Network Capacity ..................................................................... 113

3.7 Constraints ................................................................................................................................................... 113

3.8 Impact of Traffic Model on Configuration ................................................................................................... 119

3.9 Counters Related to Capacity ....................................................................................................................... 121

4 OSS dimensioning Guide ....................................................................................................... 122

5 Network Capacity Monitoring Guide ................................................................................... 123

6 FAQs ............................................................................................................................................ 124

UMTS RAN14.0

Dimensioning Rules 1 Introduction to UMTS RAN Dimensioning



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1 Introduction to UMTS RAN Dimensioning

1.1 Basic Concepts

1.1.1 Traffic Model

The estimated traffic model is based on the traffic generated by a user in a busy hour. Users in

this context refer to users across the network, not just active users or concurrent users.

1.1.2 Traffic Volume

Traffic model x Number of users = Total traffic volume during a busy hour

1.1.3 Penetration Rate

The penetration rate refers to the proportion of users who have activated a service to all users

of the network.

1.1.4 User Behaviors

With the penetration of smart phones, user behaviors have changed from just talking over

phone to social networking, game playing, Internet surfing, and communication by email.

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1.2 Dimensioning relevant factors

The network configuration depends on the following factors. The change of any factor will

necessitate the change of network configuration:

Traffic model: The change in the penetration rate of smart phones and the change in user

behaviors will have an impact on the traffic model.

Number of users: With the development of the network, the number of users will keep

increasing.

Product specification: When a new module or a new board emerges, the product

specification will be improved. As a result, the number of boards on the network will be

reduced.

Feature provisioning: Certain features can enhance the network resource usage. Whether

a feature is provisioned affects the network configuration to some extent.

1.3 Impact of the Penetration Rate of Smart Phones and User Behaviors on the Traffic Model

Germany: The signaling generated by Android is twice that by iPhone and 28 times of that by

a common UE. The impact of signaling on the network load varies with different UEs.

Canada: The single-user signaling consumption (BHCA) varies with different UE types.

Motorola, HTC, and Samsung generate the largest amount of signaling, up to 14.1, 15.6, and

12.1 respectively.

Network configuration

Traffic

model Product

specification

feature User Num

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UMTS RAN14.0

Dimensioning Rules 2 NodeB Dimensioning Guide



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2 NodeB Dimensioning Guide RAN14.0 includes two NodeB versions: NodeB V100R014 and NodeB V200R014.

NodeB V100R014 includes BTS3812E, BTS3812AE and DBS3800 products.

NodeB V200R014 includes BTS3900, BTS3900A, BTS3900L, BTS3900AL and DBS3900

products.

2.1 NodeB V100R014

2.1.1 BTS3812E/BTS3812AE Basic Module Configuration

The BTS3812E/BTS3812AE has the following subsystems:

Transport Subsystem

Baseband Subsystem

RF Subsystem

Control Subsystem

Antenna Subsystem

Power Subsystem (BTS3812AE Only)

Environment Monitoring Subsystem (BTS3812AE Only)

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Figure 2-1 Logical structure of the BTS3812E/BTS3812AE

The BTS3812E/BTS3812AE supports smooth evolution to subsequent 3GPP protocols, which

can be configured with different boards and modules to support future capacity expansion and

evolution.

In BTS3812E/BTS3812AE V100R010, the EBBI, EBOI, EULP, and WRFU are added.

In BTS3812E/BTS3812AE V100R011, the EDLP is added.

In BTS3812E/BTS3812AE V100R012, the EULPd is added.

In BTS3812E/BTS3812AE V100R013 and V100R014, no new board is added.

Transport Unit Configurations

The transport unit consists of Iub interface boards, such as NUTIs or NDTIs.

The Iub interface boards can be positioned in slots 12 to 15, as shown inFigure 2-2. One

BTS3812E/BTS3812AE can be configured with a maximum of four Iub interface boards.

Slots 12 and 13 can be configured with NUTIs or NDTIs. Slots 14 and 15 can be configured

with only NUTIs that are cabled from the front of the subrack.

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Figure 2-2 Boards in the BTS3812E/BTS3812AE baseband subrack

Table 2-1 BTS3812E/BTS3812AE Iub interface boards Specification

Board type E1 for ATM

E1 for IP

FE

electrical

unchannelized STM-1

Channelized STM-1

NDTI 8

NUTI 8 2

NUTI with E1 sub

board

16 2

NUTI with un-

channelized STM-1 sub

board

8 2 2

NUTI with channelized

STM-1 sub board 8 2 1

Baseband Unit Configurations

The baseband unit consists of the HULP or EULP or EULPd, HDLP or EDLP, and

HBBI/EBBI/HBOI/EBOI. The baseband subsystem processes digital baseband signals. Figure

2-2 shows the positions of the HULP or EULP or EULPd, HDLP or EDLP, and

HBBI/EBBI/HBOI/EBOI in the baseband subrack.

In V100R010, the EBBI, EBOI and EULP are supported.

In V100R011, the EDLP is added.

In V100R012, the EULPd is added.

The boards in the baseband subrack are described as follows:

The HBBI/HBOI can Process uplink and downlink baseband signals. Support HSDPA, and

support for HSUPA phase1 (10 ms TTI).

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The EBBI/EBOI can Process uplink and downlink baseband signals. Support HSDPA and

HSPA+ downlink feature, and support for HSUPA phase2 (2 ms TTI).

The EDLP can Process downlink baseband signals. Support HSDPA and HSPA+ feature.

The EULP can Process uplink baseband signals, support for HSUPA phase2 (2 ms TTI).

The EULPd can Process uplink baseband signals. Support HSPA+ UL 16QAM, IC

(Interference Cancellation) feature and FDE (Frequency Domain Equalization) feature.

The HBOI or EBOI has the same function as the HBBI or EBBI. The HBOI or EBOI is

configured only when the macro NodeB is connected to the RRU. The HBOI or EBOI and the

HBBI or EBBI share slots 0 and 1. One Board provides 3 CPRI interfaces.

When the NodeB is configured with more than six cells, the resource pool for processing

uplink baseband signals is split into several resource groups. Each resource group can process

data for a maximum of six cells. Each cell belongs to only one uplink resource group at a time.

Table 2-2 BTS3812E/BTS3812AE Baseband boards Specification

Board Type Cell

Uplink R99/HSUPA CE

Downlink R99 CE

HSDPA Capacity Feature Support

HBBI 3 cells 128CE 256CE 45 codes

HSDPA 14.4M

HSUPA 10ms TTI

HULP 3 cells 128CE 0 0

HDLP 6 cells 0 384CE 90 codes

EBBI/EBOI 6 cells 384CE 384CE 90 codes HSUPA 2ms TTI

HSPA+ DL 64QAM

HSPA+DL MIMO

HSPA+ DL DC-HSDPA

HSPA+ DL DC-

HSDPA+MIMO(RAN13.0)

EDLP 6 cells 0 512CE 90 codes

EULP 6 cells 384CE 0 0

EULPd 6 cells 384CE 0 0 HSPA+ UL 16QAM

IC

FDE

E-boosting(RAN13.0)

RF Unit Configurations

The RF unit consists of MTRUs and MAFUs. The MTRU subrack houses the MTRUs and the

MAFU subrack houses the MAFUs. A pair of MTRU and MAFU processes the signals of two

carriers over one TX channel and two RX channels.

In RAN10.0, Huawei provides WRFU integrating MTRU and MAFU into one unit.

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Figure 2-3 Boards in the BTS3812E/BTS3812AE RF subrack

Table 2-3 BTS3812E/BTS3812AE RF Unit Specification

RF Unit Output power carriers

MTRU 40W 2

WRFU 80W 4

Control Unit Configurations

The control unit consists of the NMPT and NMON. The control subsystem controls and

manages the entire NodeB system. Figure 2-2 shows the positions of the NMPT and NMON

in the baseband subrack.

2.1.2 BTS3812E/BTS312AE Typical Configuration

Figure 2-4 shows the BTS3812E in full configuration.

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Figure 2-4 BTS3812E(-48V DC) in full configuration

(1) MAFU subrack (2) MTRU subrack (3) Fan subrack

(4) Busbar (5) Baseband subrack

The BTS3812E has the following configuration features:

The BTS3812E supports the configuration of 1 to 6 sectors. Each sector supports a

maximum of four carriers. The BTS3812E can be connected to RRUs.

A single BTS3812E can support 3 x 4 (sector x carrier) or 6 x 2 without transmit

diversity. You may select one of the configurations, depending on the requirement of

capacity.

The BTS3812E supports a smooth capacity expansion from 1 x 1 to 6 x 2 or 3 x 4.

The capacity of the modular BTS3812E can be expanded simply through additional

modules or license expansion. In the initial phase of network deployment, some small

capacity configurations such as Omni 1 configuration or 3 x 1 can be used. With the

capacity requirement increasing, you can smoothly upgrade the system to large-capacity

configurations such as 3 x 2 and 3 x 4.

Any combination of the two frequency bands (850 MHz, 900 MHz, 1800 MHz, 1900

MHz, and 2100 MHz) can be supported in one NodeB. The NodeB with shared baseband

boards only requires RF modules at different bands.

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Table 2-4 Recommended configurations of the BTS3812E

configuration MTRU MAFU NMPT NUTI NMON EBBI

1 x 1 1 1 1 1 1 1

2 x 1 2 2 1 1 1 1

2 x 2 2 2 1 1 1 1

3 x 1 3 3 1 1 1 1

3 x 2 3 3 1 1 1 1

3 x 3 6 6 1 1 1 2

3 x 4 6 6 1 1 1 2

The diagram for connection of S111, S222 and S333 configurations are shown below.

Figure 2-5 The S111, S222 and S333 configurations

Figure2-6 shows the BTS3812AE in full configuration.

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Figure 2-6 BTS3812AE in full configuration

The BTS3812AE has the following configuration features:

The BTS3812AE supports the configuration of 1 to 6 sectors. Each sector supports a

maximum of four carriers. The BTS3812AE can be connected to the RRUs.

A single BTS3812AE can support 3 x 4 (sector x carrier) or 6 x 2 in no transmit diversity

mode. You may select one of the configurations, depending on the locations and the

number of UEs.

The BTS3812AE supports a smooth capacity expansion from 1 x 1 to 6 x 2 or 3 x 4.

The capacity of the modular BTS3812AE can be expanded simply through additional

modules or license upgrade. In the initial phase of network deployment, you can use

some small capacity configurations such as omni configuration and 3 x 1. With the

increase in the number of UEs, you can smoothly upgrade the system to large-capacity

configurations such as 3 x 2 and 3 x 4.

The combined cabinets can support any two of the frequency bands (850 MHz, 900 MHz,

1800 MHz, 1900 MHz, and 2100 MHz). The combined cabinets with shared baseband

boards only require RF modules at different bands.

Table 2-5 Recommended configurations of the BTS3812AE

configuration MTRU MAFU NMPT NUTI NMON EBBI PSU

1 x 1 1 1 1 1 1 1 2

2 x 1 2 2 1 1 1 1 2

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configuration MTRU MAFU NMPT NUTI NMON EBBI PSU

2 x 2 2 2 1 1 1 1 2

3 x 1 3 3 1 1 1 1 2

3 x 2 3 3 1 1 1 1 3

3 x 3 6 6 1 1 1 2 3

3 x 4 6 6 1 1 1 2 3

2.1.3 BTS3812E/BTS312AE Feature Upgrade Configurations

The hardware listed in the table is the basic hardware, and the software listed is the software

influenced by the capacity expansion or introduction of new features.

Upgrade to HSUPA 2ms TTI

Table 2-6 Upgrade to HSUPA 2ms TTI (3 x 1 configuration, 20 W per carrier)

Basic Hardware/Software Original Configuration Additional Configuration

Transport Interface Unit 1NUTI 0

Baseband Processing Unit 1HBBI 1EBBI or 1 EULP

RF Module 3MTRU+3MAFU 0

WCDMA Main Control Unit 1NMPT+1NMON 0

HSUPA Introduction Package (per NodeB) 1 0

HSUPA Phase2 (per NodeB) 0 1

Upgrade to HSPA+ 64QAM

Table 2-7 Upgrade to HSPA+ 64QAM (3 x 2 configuration, 20 W per carrier)



Baseband Processing Unit 1HBBI+1EBBI 0



DL 64QAM Function (per Cell) 0 6

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The Baseband Processing Unit (6Cell) supports six cells in the downlink and thus supports six

64QAM cells.

Upgrade to HSPA+ MIMO

Table 2-8 Upgrade to HSPA+ MIMO (10W+10W/C) (3 x 2 configuration)



Baseband Processing Unit 1HBBI+1 EBBI Add 1EDLP

RF Module 3MTRU+3MAFU 3MTRU+3MAFU


2x2 MIMO Function (per Cell) 0 6

Table 2-9 Upgrade to HSPA+ MIMO (10W+10W/C) (3 x 2 configuration, WRFU)



Baseband Processing Unit 1HBBI+1EBBI Add 1EDLP

RF Module 3MTRU+3MAFU 3WRFU



In MIMO mode, both the Baseband Processing Unit (6Cell) and the Baseband Processing

Unit (3Cell) support MIMO on a maximum of three cells.

Upgrade to DC-HSDPA

Table 2-10 Upgrade from 64QAM to DC-HSDPA+64QAM (3 x 2 configuration, 20 W per carrier)







DC-HSDPA Function 0 6

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Upgrade to UL 16QAM

Table 2-11 Upgrade from HSUPA phase2 (20W/C) to UL 16QAM (3 x 2 configuration)



Baseband Processing Unit 1HBBI+1EBBI 1EULPd



UL 16QAM Function 0 6

Upgrade to IC

Table 2-12 Upgrade from HSUPA phase2 (20W/C) to IC (3 x 2 configuration)






IC Function 0 6

Upgrade to FDE

Table 2-13 Upgrade from HSPA (20W/C) to FDE (3 x 2 configuration)






FDE Function 0 6

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Upgrade to DL 64QAM+MIMO

Table 2-14 Upgrade from DL 64QAM(20W/C) to DL 64QAM+MIMO (10W+10W/C) (3 x 2 configuration)




RF Module 3MTRU+3MAFU 3MTRU+3MAFU




DL 64QAM+MIMO Function 0 6

Table 2-15 Upgrade from DL 64QAM(20W/C) to DL 64QAM+MIMO (10W+10W/C) (3 x 2 configuration, WRFU)




RF Module 3MTRU+3MAFU 3WRFU





Upgrade to DL DC-HSDPA+2xMIMO(RAN13.0)

Table 2-16 Upgrade from DL 64QAM+MIMO(2x10W/C) to DL DC-HSDPA+2xMIMO (2x10W/C) (3 x 2 configuration, WRFU)



Baseband Processing Unit 1HBBI+1EBBI ADD 2EDLP+1EULPd

RF Module 6WRFU 0

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DL 2x2 MIMO Function 6 0

DL DC-HSDPA Function 0 6

DL DC-HSDPA+MIMO function 0 6

Table 2-17 Upgrade from DL DC-HSDPA(20W/C) to DL DC-HSDPA+2xMIMO (2x10W/C) (3 x 2 configuration, WRFU)



Baseband Processing Unit 1HBBI+1EBBI Add 2EDLP+1EULPd

RF Module 3WRFU Add 3WRFU





Upgrade to UL DC-HSUPA (RAN14.0)

Table 2-18 Upgrade from HSUPA to UL DC-HSUPA (3 x 2 configuration, 20W/carrier)






HSUPA Function 6 0

DC-HSUPA Function 0 6

2.1.4 DBS3800 Basic Module Configuration

The DBS3800, a distributed NodeB, consists of the BBU3806 and RRU.

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The BBU3806 is a 19-inch box, which can be configured with an Enhanced Baseband Card

(EBBC) or an extended transmission card. The extended card cannot be used independently. It

must be installed on the BBU3806 and work with the BBU3806.

Figure 2-7 Function modules of the DBS3800

Table 2-19 Function modules of the DBS3800

Function Module Description

BBU3806 Indoor baseband unit that processes baseband signals

BBU3806C Outdoor baseband unit that processes baseband signals

RRU3801C Remote radio unit. 2 carriers, 40W output power

RRU3804 Remote radio unit. 4 carriers, 60W output power

RRU3801E Remote radio unit. 2 carriers, 40W output power

RRU3808 Remote radio unit. 4 carriers, 2x40W output power

The BBU3806/BBU3806C consists of the transport subsystem, baseband subsystem, control

subsystem, interface module and power module.

The RRU consists of the interface module, TRX, Power Amplifier (PA), filter, Low Noise

Amplifier (LNA), extension interface and power module.


The transport unit consists of BBU3806 and extension Transmission Card (UBTI).

The optical sub-board is an extension plugboard for the BBU3806, which share the slot with

extension baseband Card.

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Table 2-20 DBS3800 Iub interface boards Specification

Board type E1 for ATM E1 for IP FE

electrical

unchannelized STM-1

BBU3806 8 2

UBTI 2


The Baseband unit consists of BBU3806 and extension baseband Card (EBBC or EBBCd).

The EBBC or EBBCd is an extension plugboard for the BBU3806, which share the slot with

extension Transmission Card.

In V100R010, the EBBC are supported. It supports HSUPA 2ms TTI feature.

In V100R01) feature and FDE (Frequency Domain Equalization) feature.

The DBS382, the EBBCd is added. It supports HSPA+ UL 16QAM, IC (Interference

Cancellation 00 can be configured with one or two BBUs. A maximum of three RRUs can be

connected to one BBU.

Table 2-21

Board Type Cell Uplink R99/HSUPA

Downlink R99 CE

HSDPA Capacity Feature Support

BBU3806 3 cells 192CE

(When BBU

active HSUPA,

128CE)

256CE 45 codes

HSDPA 14.4M

HSUPA 10ms TTI

BBU3806+EBBC 6 cells 384CE

(When BBU

active HSUPA,

320CE)

512CE 90 codes HSUPA 2ms TTI

HSPA+ DL 64QAM

HSPA+DL MIMO

HSPA+ DL DC-HSDPA

HSPA+ DL DC-

HSDPA+1xMIMO(RAN13.0)

BBU3806+EBBCd 6 cells 384CE

(When BBU

active HSUPA,

320CE)

512CE 90 codes HSPA+ UL 16QAM

IC

FDE

E-boosting(RAN13.0)

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RF Unit Configurations

The RRU is classified into the RRU3804, RRU3801C, RRU3801E, RRU3808, RRU3828,

RRU3829 based on different output power and processing capabilities. The

RRU3808,RRU3828 and RRU3829 support two RX channels and two TX channels.

DBS3800 support RRU3808 in V100R011, and RRU3828, RRU3829 in V100R013

Table 2-22 DBS3800 RRU Specification

RRU Type RRU3804 RRU3801C RRU3801E RRU3808 RRU3828 RRU3829

Maximum Output

Power 60W 40W 40W 2x40W 2x40W 2x60W

Number of Supported

Carriers 4 2 2 4 4 4

One RRU3801C/RRU3801E can support 2 contiguous carriers. DBS3800 can support smooth

capacity expansion from 1 x 1 to 1 x 2 without adding RF module. Two

RRU3801Cs/RRU3801Es in parallel connection within one sector can support the 1 x 4

configuration.

One RRU3804 can support 4 contiguous carriers. With 20W per carrier configuration, it can

support 3 non contiguous carriers (for example 1101, 1011), which is applicable to RAN

sharing with 2 operators has non contiguous carriers.

The RRU3808 supports 2T2R with two TX channels. The maximum radio output power per

channel is 40 W. One RRU3808 can support 4 carriers within 60M frequency bandwidth, per

carrier 20W.

The RRU3828 supports 2T2R with two Tx channels. The maximum radio output power per


carrier 20W.



carrier 30W.

For MIMO, transmit diversity configuration, two RRU3804s/RRU3801Cs /RRU3801Es

should be configured within one sector, or one RRU3808/RRU3829 should be configured

within one sector.

For 4-way receive diversity configuration, two RRUs should be configured within one sector.

2.1.5 DBS3800 Typical Configuration

The DBS3800 supports up to 12 cells, 768 CEs in the uplink, and 1,024 CEs in the downlink.

The DBS3800 supports configurations of one, two, three, or six sectors. It also supports a

smooth capacity expansion from 1 x 1 to 6 x 2 or 3 x 4. The following table lists the typical

configurations for the variable capacities of the equipment.

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Table 2-23 Configuration of the DBS3800 configured with 40 W RRU (not supporting HSUPA phase 2 and HSPA+)

20 W per Carrier Minimum Number of BBU3806s

Minimum Number of EBBCs

Minimum Number of 40 W RRUs

1 x 1 1 0 1

2 x 1 1 0 2

2 x 2 2 0 2

3 x 1 1 0 3

3 x 2 2 0 3

3 x 3 2 1 6

3 x 4 2 2 6

Table 2-24 Configuration of the DBS3800 configured with 60 W RRU (not supporting HSUPA phase 2 and HSPA+)

20 W per Carrier Minimum Number of BBU3806s

Minimum Number of EBBCs

Minimum Number of 60 W RRUs

1 x 1 1 0 1

2 x 1 1 0 2

2 x 2 2 0 2

3 x 1 1 0 3

3 x 2 2 0 3

3 x 3 2 1 3

3 x 4 2 2 6

2.1.6 DBS3800 Feature Upgrade Configurations

Upgrade to HSUPA 2ms TTI

Table 2-25 Upgrade to HSUPA 2ms TTI (3 x 1 configuration, 20 W per carrier)


BBU Unit 1BBU3806 1EBBC

RF Module 3RRU3801C 0

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HSUPA Introduction Package (per NodeB) 1 0

HSUPA Phase2 (per NodeB) 0 1








64QAM cells.





RF Module 3RRU3801C 3RRU3804 or RRU3801E


Table 2-28 Upgrade to HSPA+ MIMO (10W+10W/C) (3 x 2 configuration,RRU3808)







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Upgrade to DC-HSDPA



BBU Unit 1BBU3806+1EBBC 0




Upgrade to UL 16QAM



BBU Unit 1BBU3806+1EBBC 1BBU3806+1EBBCd



Upgrade to IC





IC Function 0 6

Upgrade to FDE

Table 2-32 Upgrade from HSPA phase2 (20W/C) to FDE (3 x 2 configuration)




FDE Function 0 6

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BBU Unit 2BBU3806+1EBBC 1EBBC





Table 2-34 Upgrade from DL 64QAM(20W/C) to DL 64QAM+MIMO (10W+10W/C) (3 x 2 configuration, RRU3808)



RF Module 3RRU3801C 3RRU3808 swap 3RRU3801C




Upgrade to DL DC-HSDPA+1*MIMO(RAN13.0)

Table 2-35 Upgrade from DL 64QAM+MIMO(2*10W/C) to DL DC-HSDPA+1*MIMO (3 x 2 configuration, RRU3808)


BBU Unit 1BBU3806+1EBBC Add 1BBU3806+1EBBC

RF Module 3RRU3808 0

DL 2x2 MIMO Function (per Cell) 6 0


DL DC-HSDPA+MIMO Function 0 6

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Table 2-36 Upgrade from DL DC-HSDPA(20W/C) to DL DC-HSDPA+1xMIMO (2*10W/C) (3 x 2 configuration, RRU3808)



RF Module 3RRU3801C 3RRU3808 swap 3RRU3801C

DL DC-HSDPA Function (per Cell) 6 0

DL 2x2 MIMO Function (per Cell) 0 3

DL DC-HSDPA+MIMO Function 0 6




BBU Unit 1BBU3806+1EBBC 0


HSUPA Function 6 0


2.2 NodeB V200R014

The 3900 series NodeB basically comprise the following three units:

The indoor baseband processing unit BBU3900

The indoor radio frequency unit WRFU

The outdoor Remote Radio Unit (RRU)

Flexible combinations of the three units and auxiliary devices can provide different NodeBs

that apply to different scenarios such as indoor centralized installation, outdoor centralized

installation, outdoor distributed installation, site sharing of multiple network systems, and

multi-mode application.

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Figure 2-8 Units and auxiliary devices of the 3900 series NodeBs

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Figure 2-9 Application scenarios of the 3900 series NodeBs

Different combinations of the units and auxiliary devices form the following 3900 series

NodeBs:

Cabinet macro NodeB

The cabinet macro NodeB, integrating the BBU3900 and the WRFU, consists of the

indoor BTS3900, BTS3900L, BTS3900AL and the outdoor BTS3900A. The cabinet

macro NodeB applies to centralized installation, where the BTS3900 and the BTS3900A,

as mentioned above, are recommended for indoor application and outdoor application

respectively.

Distributed NodeB

The distributed NodeB, known as the DBS3900, consists of the BBU3900 and the RRU.

For the distributed installation, the RRU is placed close to the antenna. This can reduce

feeder loss and improve NodeB performance.

Compact mini NodeB

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The compact mini NodeB is also of two types, which is applies to the new outdoor 3G

sites where no equipment room exists, hot spots, marginal networks, and blind spots such

as tunnels.

2.2.1 3900 Series NodeB Basic Module Configuration

The 3900 series NodeB consists of the BBU3900 and RF unit (RRU or WRFU).

The BBU3900 is an indoor base band unit. The maximum is 1 BBU3900 in one NodeB. It is

used for all 3900 series WCDMA NodeB products. The BBU3900 consists of the boards for

the base band, control, switching and Iub transmission interface functionalities. All the boards

support the plug-and-play function, and the capacity and interface board can be expanded as

required.

The BBU3900, powered with 48 V/ 24V DC, provides environmental protection and cooling functions. It has FE and E1 connections for the Iub interface, for 6 optical CPRI links, and for

up to 16 external alarms.

The BBU3900 is 19 inch wide and 2 U high. It can be installed on the floor, on the wall, or

mounted in a 19-inch rack.

BBU3900 subrack is composed of power and environment interface unit and universal BBU

fan unit. These units are plug in a backplane of the subrack.

The BBU3900 also provides 8 slots for WMPT, UMPT, UTRP, UTRPc, WBBP, UCIU, UELP

and UFLP. Every slot of BBU subrack supports to plug in several kinds of board flexibly.

Figure 2-10 Structure of the BBU3900 Subrack

Table 2-38 The board supported in the slots

Board Slot 0 Slot 1 Slot 2 Slot 3 Slot 4 Slot 5 Slot 6 Slot 7

WMPT available available

UMPTa1 available available

UTRP available available available available

UTRPc available available available available available

UCIU available

WBBP available available available available available available

UELP available available available available available available available available

UMTS RAN14.0




28

Board Slot 0 Slot 1 Slot 2 Slot 3 Slot 4 Slot 5 Slot 6 Slot 7

UFLP available available available available available available available available

One WMPT/UMPT is mandatory configuration. And one WBBP also must be configured as

BBU realizes baseband processing. Others such as UTRP, UELP and UFLP are optional

depended on requirements.

Control Unit Configurations

The UMPT board is introduced in V200R014.

The WMPT/UMPT integrated the control and transport subsystem manages the entire NodeB

system. The subsystem performs operation and maintenance, processes various types of

signaling, provides system clocks, and provides transport interfaces. One BBU3900 can hold

up to two WMPTs or two UMPTs for 1+1 redundancy.

One WMPT provides 4 E1, 1 electrical FE and 1 optical FE interfaces. For one NodeB, 2

WMPT can provide 8 E1 and 2 electrical FE and 2 optical FE interfaces.

One UMPT provides 4E1, 1 electrical FE/GE and 1 optical FE/GE interfaces.


One BBU3900 can plug in 4 UTRP maximally for NodeB.

In V200R010, the UTRP3, UTRP4 and UTRP6 are supported.

In V200R011, the UTRP9 and UTRP2 are added.

In V200R014, the UTRPc is added.

Table 2-39 Transmission Card Specification

Type E1 for ATM

E1 for IP

FE

electrical

FE

optical

unchannelized STM-1

FE/GE electrical

FE/GE Optical

WMPT 4 1 1

UTRP3 8

UTRP4 0 8

UTRP6 1

UTRP9 4

UTRP2 2

UTRPc 4 2

UMTS RAN14.0




29


The 3900 series NodeB supports smooth evolution to subsequent 3GPP protocols, which can

be configured with different boards and modules to support future capacity expansion and

evolution.

In V200R010, the WBBPa and WBBPb are supported.

In V200R012, the WBBPd is added.

In V200R013, no new board is added.

In V200R014, the WBBPf is added.

The WBBPa can Process uplink and downlink baseband signals. Support HSDPA (2 ms TTI),

and support for HSUPA phase1 (10 ms TTI).

The WBBPb can Process uplink and downlink baseband signals. Support HSDPA (2 ms TTI),

and support for HSUPA phase2 (2 ms TTI).

The WBBPd/WBBPf can Process uplink and downlink baseband signals. Support HSPA+ UL

16QAM, IC (Interference Cancellation) feature and FDE (Frequency Domain Equalization)

feature.

One WBBPa or WBBPb provides 3 CPRI interfaces. One WBBPd/WBBPf provides 6 CPRI

interfaces. The CPRI support electrical and optical port. The electrical interface is provided

for connection with WRFU, while the optical interface is provided for connection with RRU.

Table 2-40 Baseband Card Specification

Board Type

Cell Uplink R99/HSUPA CE

Downlink R99 CE

HSDPA Capacity

Feature Support HSDPA Users

HSUPA Users(10ms TTI,SRB over HSUPA)


WBBPa 3 cells 128 256 45 codes HSUPA 10ms TTI

HSDPA

96 60 Not

Support

WBBPb1 3 cells 64 64 45 codes HSUPA 2ms TTI

HSPA+ DL 64QAM

HSPA+DL MIMO

HSPA+ DL DC-

HSDPA

DC-

HSDPA(RAN13.0)

64 64 8

WBBPb2 3 cells 128 128 45 codes 128 96 6



WBBPd1 6 cells 192 192 90 codes HSPA+ UL 16QAM

IC

FDE

E-boosting(RAN13.0)

128 96 24

WBBPd2 6 cells 384 384 90 codes 144 96 48

WBBPd3 6 cells 256 256 90 codes 144 96 32

WBBPf1 6 cells 192 256 90 codes -* -* -*

UMTS RAN14.0




30

Board Type

Cell Uplink R99/HSUPA CE

Downlink R99 CE

HSDPA Capacity

Feature Support HSDPA Users






*: The number of HSDPA and HSUPA users of WBBPf board is in the planning.

Board Type HSDPA Capacity per Cell

HSDPA Capacity per Cell with CPC

HSUPA Capacity per Cell

HSUPA Capacity per Cell with CPC

WBBPa 64 users Not Support 20 users Not Support

WBBPb1 64 users 64 users 60 users 64 users




WBBPd1 64 users 96 users 60 users 96 users



WBBPf1 64 users 128 users 60 users 128 users




In the case of 2 x 2 MIMO, TX Diversity or 4-way RX diversity configurations , the

WBBPa/b/d/f1 that originally support six cells can support only three cells; the

processing capabilities of the WBBP that support three cells remain unchanged. The

WBBPf2/f3/f4 can support 6 MIMO or 6 TX diversity cells. The WBBPf2/f3 can only

support 3 4-way RX diversity cells, But the WBBPf4 can support 6 4-way RX diversity

cells.

CCH R99 included, 16CE for downlink and 6 CE for uplink for 3 cells

Resources for Compressed Mode included

Resources for Softer handover included

TX diversity is no impact for CE consumption for both uplink and downlink direction.

UMTS RAN14.0




31

Resources for HS-DSCH, HS-SCCH and HS-DPDCH included, HSDPA services not

affect BB capacity for R99 services.

Capacity expansion. NodeB capacity can be expanded by adding more CE license or by

adding more channel boards. If the capacity of the existing hardware is enough for

capacity expansion, only license file need to be upgraded. Uplink and downlink capacity

expansion could be implemented separately. Otherwise, new board and new license need

to be added to meet the new requirement of capacity expansion. Uplink and downlink

capacity expansion could also be implemented separately. The step of license expansion is

16 CEs according to the customers

The signaling processing specifications of a NodeB are listed as follows.

Table 2-41 Signaling processing specifications(RAN13 and before)

Before DBS3900V200R010C01SPC510/DBS3900V200R011C00SPC320

DBS3900V200R010C01SPC510/DBS3900V200R011C00SPC320

DBS3900V200R012C00SPC200

DBS3900V200R012C00SPC420(2011.04)

DBS3900V200R013C00SPC200(2011.05)

WMPT+1

WBBPb/d

30 CNBAP/s 40 CNBAP/s 45

CNBAP/s

55 CNBAP/s 60 CNBAP/s

WMPT+2

WBBPb/d


CNBAP/s

110

CNBAP/s

120 CNBAP/s

WMPT+3

WBBPb/d


CNBAP/s

130

CNBAP/s

170 CNBAP/s

WMPT+4

WBBPb/d


CNBAP/s

130

CNBAP/s

170 CNBAP/s

WMPT+5

WBBPb/d

NA NA NA NA 170 CNBAP/s

WMPT+6

WBBPb/d


UTRP+W

MPT+1W

BBPb/d


CNBAP/s

55 CNBAP/s 60 CNBAP/s

UTRP+W

MPT+2W

BBPb/d


CNBAP/s

110

CNBAP/s

120 CNBAP/s

UTRP+W

MPT+3W

BBPb/d


CNBAP/s

165

CNBAP/s

180 CNBAP/s

UTRP+W

MPT+4W

BBPb/d


CNBAP/s

200

CNBAP/s

240 CNBAP/s

UTRP+W

MPT+5W

BBPb/d


UMTS RAN14.0




32

Table 2-42 Signaling processing specification(RAN14)

RAN14

UMPT+3xWBBPb/d+1*WBBPf 760

UMPT+6xWBBPb/d 707

UMPT+6xWBBPf 1500

Lighting Protection Unit Configurations

Considering the issue of E1/T1 or FE interface protection, there are 2 kinds of lighting

protection unit developed: UELP and UFLP. Lighting protection unit can plug into the slot of

BBU3900 or additional signal lighting protection unit.

UELP provides protection for E1/T1 interface.

UFLP provides protection for FE interface.

Universal Cascading Interface Unit Configurations

The UCIU board is introduced in V200R014.

Two BBUs can be cascaded by UCIU board. The root BBU is configured with UCIU board,

which cascades with UMPT board configured in the leaf BBU.

When the number of WBBP board is greater than 6, two BBUs can be cascaded as one NodeB

site. BBU cascading is shown below:

Figure 2-11 BBU Cascading

U

F

A

N UPEU

U

F

A

N UPEU

WBBP

WBBP

WBBP

WBBPf

WBBP

WBBPf UMPT

UCIU

WMPT

WBBP

RF Unit Configurations (WRFU)

For cabinet NodeBBTS3900, BTS3900L, BTS3900AL and BTS3900A, the RF module is

WRFU.

The WRFU is divided into two types according to output power and carries:

40 W WRFU, 40W output power on the antennal port, 2 carriers

80W WRFU, 80W output power on the antennal port, 4 carriers

Two 40W WRFUs in parallel connection within one sector can support the 1 x 4 configuration.

UMTS RAN14.0




33

Two 80W WRFUs in parallel connection within one sector can support the 1 x 8 configuration.

One 80W WRFU can support 4 contiguous carriers in 1 sector and it also can support non

contiguous carriers (for example 1101, 1011, 1001, 1010, 1100), which can be applicable to

RAN sharing with 2 operators has non contiguous carriers.

For MIMO, transmit diversity or 4-way receive diversity configuration, two WRFUs should

be configured within one sector.

In RAN13.0, the WRFUd module is added. The WRFUd supports 2T2R, 4 carriers, with two

Tx channels. The maximum radio output power per channel is 60W.

RF Unit Configurations (RRU)

For distributed NodeB and BTS3900C, the RF module is RRU3808, RRU3804, RRU3801E,

or RRU3801C.

In V200R010, the RRU3804, RRU3801E, and RRU3801C are supported.

In V200R011, the RRU3808 is added.

In V200R013, the RRU3828, RRU3829 are added.

The RRU is classified into the RRU3804, RRU3801C, RRU3801E, and RRU3808 based on

different output power and processing capabilities. The RRU3808, RRU3828 and RRU3829

support two RX channels and two TX channels.

Table 2-43 RRU Specification

RRU Type

RRU3804 RRU3801C RRU3801E RRU3808 RRU3828 RRU3829

Maximum

Output

Power

60W 40W 40W 2x40W 2x40W 2x60W

Number

of

Supported

Carriers

4 2 2 4 6 6

One RRU3801C/RRU3801E can support 2 contiguous carriers. DBS3900 can support smooth

capacity expansion from 1 x 1 to 1 x 2 without adding RF module. Two

RRU3801Cs/RRU3801Es in parallel connection within one sector can support the 1 x 4

configuration.

One RRU3804 can support 4 contiguous carriers. With 20W per carrier configuration, it can

support 3 non contiguous carriers (for example 1101, 1011), which is applicable to RAN

sharing with 2 operators has non contiguous carriers. Two RRU3804s in parallel connection

within one sector can support the 1 x 8 configuration.

The RRU3808 supports 2T2R with two TX channels. The maximum radio output power per


carrier 20W.

UMTS RAN14.0




34



carrier 13W



carrier 20W.

For MIMO, transmit diversity configuration, two RRU3804s/RRU3801Cs /RRU3801Es

should be configured within one sector, or one RRU3808/RRU3829 should be configured

within one sector.

For 4-way receive diversity configuration, two RRUs should be configured within one sector.

2.2.2 3900 Series NodeB Typical Configurations

BTS3900 /BTS3900 (Ver.C) Cabinet

If the BBU and RFU are housed in an indoor cabinet, they form a BTS3900 /BTS3900 (Ver.C)

Cabinet. The following figure shows the BTS3900 (-48V DC).

Figure 2-12 BTS3900 /BTS3900 (Ver.C) Cabinet (-48V DC) in full configuration

BTS3900 /BTS3900 (Ver.C) Cabinet can support up to 24 cells. There can be configured

as Omni directional, 2-sector, 3-sector and 6-sector configurations.

BTS3900 /BTS3900 (Ver.C) Cabinet supports a smooth capacity expansion from 1 x 1 to

6 x 4 or 3 x 8.

BTS3900 /BTS3900 (Ver.C) Cabinet supports dual band configurations by a free mix of

WRFU types for any frequency band connected to the baseband Unit.

The maximum capacity of the BTS3900/BTS3900 (Ver.C) Cabinet is up to UL 2304 CEs

and DL 2304 CEs. The capacity can be expanded simply through additional modules or

license upgrade. In the initial phase of network deployment, you can use some small

capacity configurations such as 3 x 1 configurations. With the increase in the number of

UMTS RAN14.0




35

UEs, you can upgrade the system to large-capacity configurations such as 3 x 2 and 3 x 4

smoothly.

Table 2-44 Recommended configurations of the BTS3900

Per carrier 20W

Minimum # of Indoor Cabinet

Minimum # of WMPT

Minimum # of WBBPd

Minimum # of RFU

1 1 1 1 1 1

1 2 1 1 1 1

1 3 1 1 1 1

1 4 1 1 1 1

2 1 1 1 1 2

2 2 1 1 1 2

2 3 1 1 1 2

2 4 1 1 2 2

3 1 1 1 1 3

3 2 1 1 1 3

3 3 1 1 2 3

3 4 1 1 2 3

6 1 1 1 2 6

6 2 1 1 2 6

3 5 1 1 3 6

3 6 1 1 3 6

3 7 1 1 4 6

3 8 1 1 4 6

6 3 1 1 3 6

6 4 1 1 4 6

BTS3900A /BTS3900 A(Ver.C) Cabinet

If the BBU3900/BTS3900 A(Ver.C) Cabinet is housed in APM30 or TMC, RFU module are

housed in outdoor RF cabinet, they form a NodeB BTS3900A/BTS3900 A(Ver.C) Cabinet.

UMTS RAN14.0




36

Figure 2-13 BTS3900A/BTS3900 A(Ver.C) Cabinet in full configuration

The capacity, CE resource of BTS3900A/BTS3900 A(Ver.C) Cabinet is the same as BTS3900.

Table 2-45 Recommended configurations of the BTS3900A/BTS3900 A(Ver.C) Cabinet

Per carrier 20W

Minimum # of Cabinet

Minimum # of WMPT

Minimum # of WBBPd

Minimum # of WRFU

1 1 One APM30,

One 6RF

cabinet,

One battery

cabinet

1 1 1

1 2 1 1 1

1 3 1 1 1

1 4 1 1 1

2 1 1 1 2

2 2 1 1 2

2 3 1 1 2

2 4 1 2 2

3 1 1 1 3

3 2 1 1 3

UMTS RAN14.0




37

Per carrier 20W

Minimum # of Cabinet

Minimum # of WMPT

Minimum # of WBBPd

Minimum # of WRFU

3 3 1 2 3

3 4 1 2 3

6 1 1 2 6

6 2 1 2 6

3 5 1 3 6

3 6 1 3 6

3 7 1 4 6

3 8 1 4 6

6 3 1 3 6

6 4 1 4 6

BTS3900L /BTS3900L (Ver.C) Cabinet

BTS3900L/BTS3900L (Ver.C) cabinets house BBU3900s and RFUs and provide the power

distribution and surge protection functions. A single BTS3900L/BTS3900L (Ver.C) cabinet

can house a maximum of 12 RFUs and 2 BBU3900s. This saves installation space and

facilitates smooth evolution.

Figure 2-14 shows the internal structure of a BTS3900L cabinet.

UMTS RAN14.0




38

Figure 2-14 Internal structure of a BTS3900L cabinet

Figure 2-15 shows the internal structure of a BTS3900L (Ver.C) cabinet.

UMTS RAN14.0




39

Figure 2-15 BTS3900L (Ver.C) cabinet

Table 2-46 lists typical configurations of a single-mode BTS3900L or BTS3900L (Ver.C)

cabinet.

Table 2-46 Typical configurations of a single-mode BTS3900L or BTS3900L (Ver.C) cabinet

Mode Configuration Number of Modules Output Power of Each Carrier

UMTS S4/4/4 3 WRFU 20 W

S4/4/4 (MIMO) 3 WRFUd 30 W (2 x 15 W)

S4/4/4 3 MRFU 20 W

S4/4/4 (MIMO) 3 MRFUd 40 W (2 x 20 W)

UMTS RAN14.0




40

The preceding configurations assume that each cell uses one dual-polarized antenna.

BTS3900L or BTS3900L (Ver.C) cabinets are mainly used in scenarios where multiple

frequency bands are applied and multiple modes co-exist. Table 2-46 lists typical

configurations of a multi-mode BTS3900L or BTS3900L (Ver.C) cabinet.

BTS3900AL

The BTS3900AL is introduced in V200R014.

A BTS3900AL cabinet performs power distribution and surge protection. It consists of

BBU3900s and RFUs. As a high-integration outdoor site solution, the BTS3900AL cabinet

houses a maximum of two BBU3900s and nine RFUs to save installation space and ensure

smooth evolution.

Figure 2-16 shows the internal structure of a BTS3900AL cabinet.

Figure 2-16 Internal structure of a BTS3900AL cabinet

NOTE

UMTS RAN14.0




41

BTS3900AL cabinets mainly apply to large-capacity scenarios where multiple frequency

bands or multiple modes co-exist. They also support single-mode applications. Table 2-47

lists typical configurations of a multi-mode BTS3900AL cabinet.

Table 2-47 Typical configurations of a multi-mode BTS3900AL cabinet

Mode Typical Configurations

Number of RF Modules

Output Power of Each Carrier

GU GSM S8/8/8 (900 MHz)

+ GSM S8/8/8 (1800

MHz) + UMTS S2/2/2

(2100 MHz)

3 MRFUd (GO) + 3

MRFUd (GO) + 3

WRFU (UO)

20 W + 20 W +

40 W

GSM S6/6/6 (900 MHz)

+ UMTS S1/1/1(900

MHz) + GSM S8/8/8

(1800 MHz) + UMTS

S2/2/2 (2100 MHz)

3 MRFUd (GU) + 3

MRFUd (GO) + 3

WRFUd (UO)

20 W + 40 W +

20 W + 80 W (2

x 40 W)

GL GSM S4/4/4 (900 MHz)

+ GSM S4/4/4 (1800

MHz) + LTE 3 x 20

MHz (MIMO)

3 GRFU (GO) + 3

GRFU (GO) + 3 LRFU

(LO)

20 W + 80 W (2

x 40 W)

GSM S6/6/6 + LTE 3 x

10 MHz (2T2R) + LTE

3 x 20 MHz (MIMO)

6 MRFU (GL) + 3

LRFU (LO)

20 W + 2 x 20 W

+ 80 W (2 x 40

W)

GSM S8/8/8 (900 MHz)

+ LTE 3 x 20 MHz

(800MHz, MIMO)

3 MRFUd (GO) + 3

LRFU (LO)

20 W + 120 W (2

x 60 W)

UL UMTS S2/2/2 + LTE 3

x 20 MHz (MIMO)

3 WRFU + 3 MRFU

(LO)

40 W + 80 W (2

x 40 W)

3 MRFU (UO) + 3

MRFU (LO)

UMTS S2/2/2 (MIMO)

+ LTE 3 x 20 MHz

(4T4R)

3 WRFUd + 6 LRFU 80 W (2 x 40 W)

+ 80 W (2 x 40

W) 3 MRFUd (UO) + 6

MRFUd (LO)

GU+L/GL+U

(independent

BBUs)

GSM S8/8/8 + UMTS

S2/2/2 (MIMO) + LTE

3 x 20 MHz (MIMO)

3 MRFUd (UO) + 3

WRFUd + 3 MRFUd

(LO)

20 W + 80 W (2

x 40 W) + 120 W

(2 x 60 W)

GU+L/GL+U

(interconnecte

d BBUs)

GSM S6/6/6 + UMTS

S1/1/1 (MIMO) +GSM

S6/6/6 + LTE 3 x 10

MHz (MIMO) + UMTS

S2/2/2 (MIMO)

3 MRFUd (GU) + 3

MRFUd (GL) + 3

WRFU

20 W + 40 W (2

x 20 W) + 20 W

+ 40 W (2 x 20

W) + 80 W (2 x

40 W)

UMTS RAN14.0




42

The preceding configurations assume that each cell uses one dual-polarized antenna.

In Table 2-47, GU indicates that GSM and UMTS share one BBU, GL indicates that GSM and LTE

share one BBU, and UL indicates that UMTS and LTE share one BBU; GU+L indicates that GSM

and UMTS share one BBU and LTE uses another BBU, and GL+U indicates that GSM and LTE

share one BBU and UMTS uses another BBU.

DBS3900

The BBU and RRU are the main parts of DBS3900. The two units support independent

installation, capacity expansion, and evolution, thus meeting the requirements of WCDMA

network construction. The two units can be connected by electrical or optical cables through

the CPRI interface, thus facilitating site acquisition, device transportation, equipment room

construction, and equipment installation.

Figure 2-17 DBS3900 full configuration

The capacity, CE resource of DBS3900 is also the same as BTS3900.

Table 2-48 Recommended configurations of the DBS3900

Per carrier 20W

Minimum # of WMPT

Minimum # of WBBPd

Minimum # of RRU3804

1 1 1 1 1

1 2 1 1 1

1 3 1 1 1

2 1 1 1 2

2 2 1 1 2

2 3 1 1 2

3 1 1 1 3

UMTS RAN14.0




43

Per carrier 20W

Minimum # of WMPT

Minimum # of WBBPd

Minimum # of RRU3804

3 2 1 1 3

3 3 1 2 3

6 1 1 2 6

6 2 1 2 6

3 5 1 3 6

3 6 1 3 6

6 3 1 3 6

BTS3900C

The compact mini NodeB known as the BTS3900C consists of one BBU3900C (BBU3900

with a mini outdoor cabinet) and one RRU3804.

BTS3900C can support up to 1x3 configurations.

The maximum capacity of the BTS3900C is up to UL 384 CEs and DL 384 CEs. The

capacity can be expanded simply through additional modules or license upgrade. The

step of license expansion is 16CEs according to the customers requirements.

2.2.3 3900 Series NodeB Feature Upgrade Configurations

The hardware listed in the table is the basic hardware, and the software listed is the software

influenced by the capacity expansion or introduction of new features.




RF Module 3 0

Baseband Processing Unit 1 WBBPb (6Cell) 0

WCDMA Main Control Unit 1 0



64QAM cells.

UMTS RAN14.0




44




RF Module (Except RRU3808) 3 3

Baseband Processing Unit 1 WBBPb (6Cell) 1 WBBPb or WBBPd



Table 2-51 Upgrade to HSPA+ MIMO (10W+10W/C) (3 x 2 configuration, RRU3808)


RRU3808 3 0






Upgrade to DC-HSDPA



RF Module 3 0

Baseband Processing Unit 1 WBBPb (6Cell) 0

WMPT 1 0



When the Baseband Processing Unit (3Cell), that is, WBBPb1 or WBBPb2, is configured for

six cells DC-HSDPA, two WBBPb1 or WBBPb2 boards are required.

UMTS RAN14.0




45

Upgrade to UL 16QAM



RF Module 3 0

Baseband Processing Unit 1 WBBPb (6Cell) 1 WBBPd

WMPT 1 0


Upgrade to IC



RF Module 3 0


WMPT 1 0

Power License (per 20W) 3 0

IC Function 0 6

Upgrade to FDE

Table 2-55 Upgrade from HSPA (20W/C) to FDE (3 x 2 configuration)


RF Module 3 0


WMPT 1 0

FDE Function 0 6

UMTS RAN14.0




46




RF Module (Except RRU3808) 3 3


WMPT 1 0




Table 2-57 Upgrade from DL 64QAM(20W/C) to DL 64QAM+MIMO (10W+10W/C) (3 x 2 configuration, RRU3808)


RRU3808 3 0


WMPT 1 0





Table 2-58 Upgrade from DL 64QAM+MIMO(2x10W/C) to DL DC-HSDPA+2xMIMO (2x10W/C) (3 x 2 configuration, RRU3808)


RF Module 3 0

Baseband Processing Unit 2 WBBPb (6Cell) 1 WBBPb or 1WBBPd

WMPT 1 0



UMTS RAN14.0




47



Table 2-59 Upgrade from DL DC-HSDPA(20W/C) to DL DC-HSDPA+2xMIMO (2x10W/C) (3 x 2 configuration, RRU3808)


RF Module 3 0

Baseband Processing Unit 1 WBBPb (6Cell) 2 WBBPb or 2WBBPd

WMPT 1 0




Upgrade to UL DC-HSUPA (RAN14.0)



RF Module 3 0

Baseband Processing Unit 1 WBBPd2 0

WMPT 1 0

HSUPA Function 6 0


RAN13.0 includes two NodeB versions: NodeB V100R013 and NodeB V200R013.

NodeB V100R013 includes BTS3812E, BTS3812AE and DBS3800 products.

NodeB V200R013 includes BTS3900, BTS3900A and DBS3900 products.

UMTS RAN14.0




48

2.3 Capacity Dimensioning Procedure

2.3.1 Introduction

The main driver of 3G mobile networks is availability of wide range of multi-media

applications and services. This new multi-service aspect brings totally new requirements into

capacity dimensioning process.

The aim of WCDMA capacity dimensioning is to obtain the number of subscribers supported

by one cell by the given traffic model.

Traffic models like Erlang B, Erlang C, etc., are established models which can model single

service, circuit-switched traffic quite accurately. However, there are no established ways for

modeling multi-service traffic in UMTS. Huawei makes a great deal of study in the field of

multi-service capacity dimensioning and introduces multidimensional Erlang B model as the

approach to estimate the capacity of CS multi-service. As PS is best effort service , mixed

service (CS&PS service) capacity dimension will not use MDE model .The general rules are

as follows.

Assuming the number of subscribers, the traffic profile can be used to determine whether the

maximum permissible system load is exceeded or not by the overall system load. We can get

the overall system load from the CS peak cell load, CS average cell load and PS average cell

load. When the overall system load equals the maximum permissible system load, the

assumed number of subscribers is the capacity of one cell.

Otherwise the assumed subscribers need to be adjusted and the iteration procedure needs to be

initiated again.

Note that the CS load (Erlang services load) in RAN14.0 includes not only R99 CS but also

CS/VoIP/PTT over HSPA services. The MDE model is also used to calculate the peak CS load.

This chapter is organized as follows:

Section 2.3.2 introduces the main principle about CS capacity dimensioning.

Section 2.3.3, 2.3.4 introduces the main principle about PS and R99 capacity

dimensioning.

Section 2.3.5introduces the main principle for HSDPA capacity dimensioning

Section 2.3.6 introduces the main principle for HSUPA capacity dimensioning

Section 2.3.7introduces MBMS capacity dimensioning

Section 2.3.8 presents us the principle about mixed services capacity dimensioning.

2.3.2 CS Capacity Dimensioning Principle

In RAN14.0, CS /PS over HSPA and PTT over HSPA are introduced, which have impact on

the total capacity dimensioning.

Since the traffic of CS /PS over HSPA and PTT over HSPA are described as Erlang, so these

part of traffic from CS/VOIP /PTT over HSPA could combine with R99 CS traffic together to

use multi-dimensional ElrangB to make the loading dimensioning.

2.3.2.1 Separate R99 CS Capacity Dimensioning Principle

The purpose of separate R99 CS capacity dimensioning is help to decide whether the loading

of R99 CS and PS exceed the loading threshold (75% in downlink and 50% in uplink), since

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the loading threshold of final CS service which includes the traffic Erlangs from CS/VOIP

/PTT over HSPA is 90% in downlink and 75% in uplink.

Step 1 Calculation of CS peak cell load peakCSLoad

CS peak cell load can be calculated by multidimensional ErlangB algorithm.

Multidimensional ErlangB can estimate the respective blocking probability of various CS

services. Under a fixed cell load, different services have different blocking probability, which

depends on the load of a single connection. Multidimensional ErlangB model is illustrated in

following figure:

Figure 2-18 Multidimensional Erlang B Model

multiservice

Blocked

calls

Calls

arrival

Calls

completion

Fixed cell load

Multidimensional Erlang B model makes it possible to utilize the cell capacity effectively.

The resource is shared by all services in multidimensional ErlangB model, which makes use

of the fact that the probability of simultaneous bursts from many independent traffic sources

is very small. This idea is that according to the law of large numbers the statistical fluctuation

decreases in an aggregated flow of many burst and fluctuating traffic flows when the number

of combined flows increases. The following figure illustrates the gain when resource is shared

compared to the partitioned resource.

Figure 2-19 Partitioning Resources vs. Resources Shared

ErlangB - Partitioning Resources

Low Utilization of resources

Multidimensional ErlangB - Resources shared

High Utilization of resources

In WCDMA CS capacity dimensioning, given respective GoS (blocking probability) of CS

services and designed load, number of subscribers supported by one cell can be obtained

using multidimensional Erlang B (MDE) model. Furthermore, given GoS and number of

subscribers per cell, CS peak cell load can be obtained; given number of subscribers per cell

and CS peak cell load, respective GoS of CS services can be obtained also. This is shown in following figure.

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Figure 2-20 Estimate CS Capacity with Multidimensional Erlang B Model

GoS requirements of

various CS servicesCS peak cell load

Subscribers per cell

MDE

Step 2 Calculation of CS average cell load avgCSLoad

According to the average number of channel occupied by CS services, which is approximately

equals to the cell traffic when the blocking probability is relatively low, we can obtain the

average CS cell load.

Traffic per cell of CS service :

userii NUserTrafficPerCellTrafficPer (1)

)1( SHOi

iiavgCS RnectionLoadPerConCellTrafficPerLoad (2)

Where,

userN : The number of subscribers per cell

iUserTrafficPer : The traffic per subscriber of CS service i .

SHOR : Soft handover ratio.

The peakCSLoad and avgCS

Load here are used to decide whether the total R99 traffic exceed loading threshold.

2.3.2.2 Final CS capacity dimensioning

Step 1 Calculation of all CS services peak cell load peakERLLoad

ERL peak cell load here means the peak loading consumption of R99 CS services and the

traffic from CS/VOIP/PTT over HSPA.

Same to CS peak loading dimensioning, multi-dimensional ErlangB model is used to make

the calculation of peakERLLoad .

Step 2 Calculation of ERL average cell load avgERLLoad

i

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ERL average cell load here means the average loading consumption of R99 CS services and

traffic from CS/VOIP /PTT over HSPA.

avgERLLoad = avgCSLoad + avgCSoverHSPA

Load + avgPAVOIPoverHSLoad +

avgAPTToverHSPLoad (3)

Where,

avgCSLoad is the average loading of R99 CS services

avgCSoverHSPALoad is the average loading of CS over HSPA services

avgPAVOIPoverHSLoad is the average loading of VOIP over HSPA services.

avgAPTToverHSPLoad is the average loading of PTT over HSPA services.

Calculation of avgCSLoad

According to the average number of channel occupied by CS services, which is approximately

equals to the cell traffic when the blocking probability is relatively low, we can obtain the

average CS cell load.

Traffic per cell of CS service :

userii NUserTrafficPerCellTrafficPer (4)

CS average cell load:

Uplink:

i

iULiavgCS nectionLoadPerConCellTrafficPerLoad (5)

Downlink:

On downlink the calculation of load should consider the ratio of SHO.

)1( SHOi

iDLiavgCS RnectionLoadPerConCellTrafficPerLoad (6)

Where,

userN : The number of subscribers per cell

iUserTrafficPer : The traffic per subscriber of CS service i .

SHOR : Soft handover ratio.

Calculation of average loading of CS over HSPA services avgCSoverHSPALoad

Detailed capacity dimensioning is depicted as following.

Traffic per cell of CS over HSPA service:

i

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CelliUseriCell UserNumTrafficTraffic __ (7)

Where,

iUserTraffic _ is the traffic model of CS over HSPA users in one cell, unit: Erlang

CellUserNum is the total number of CS over HSPA users in one cell.

Uplink:

i

iULiavgCSoverHSPA nectionLoadPerConlTrafficCelLoad (8)

Downlink:

i

iDLiavgCSoverHSPA nectionLoadPerConlTrafficCelLoad (9)

Calculation of average loading of VOIP over HSPA services avgPAVOIPoverHSLoad


Traffic per cell of VOIP over HSPA service:


Where,

iUserTraffic _ is the traffic model of VOIP over HSPA users in one cell, unit: Erlang

CellUserNum is the total number of VOIP over HSPA users in one cell.

Uplink:

i

iULiavgPAVOIPoverHS nectionLoadPerConlTrafficCelLoad (11)

Downlink:

i

iDLiavgPAVOIPoverHS nectionLoadPerConlTrafficCelLoad (12)

Calculation of average loading of PTT over HSPA services avgAPTToverHSPLoad


Traffic per cell of PTT over HSPA service:


Where,

iUserTraffic _ is the traffic model of PTT over HSPA users in one cell, unit: Erlang

CellUserNum is the total number of PTT over HSPA users in one cell.

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Uplink:

i

iULiavgAPTToverHSP nectionLoadPerConlTrafficCelLoad (14)

Downlink:

i

iDLiavgAPTToverHSP nectionLoadPerConlTrafficCelLoad (15)

2.3.3 PS Capacity Dimensioning Principle

The following shows us how to calculate the average cell load caused by PS services.

Step 1 Calculation of PS average cell load for UL AvgPSLoad

iUL

i

ichannelsAvgPS nectionLoadPerConNLoad (16)

Where

ichannelsN is the number of equivalent channels for service i

3600

)1()1( Re

ii

Burstinessiontransmissiiuser

ichannelsR

RRPerUserThroughputNN

(17)

iPerUserThroughput : Throughput per user for service i .

iontransmissiR Re : The ratio of data retransmission for service i because of block error.

BurstinessR : The ratio of traffic burstiness.

Step 2 Calculation of PS average cell load for DL

Calculation of PS average cell load for DL is almost same as that for UL except that the

impact on the load due to SHO should be considered in DL.

2.3.4 R99 CS+PS Load Evaluation

From the calculation in 2.3.2.1 and 2.3.3, we need to tell whether the R99 CS+PS loading

already exceed 75% in downlink and 50% in uplink.

Downlink

Total R99 downlink loading = max { peakCSLoad , avgCS

Load + AvgPSLoad } +

DLCCHLoad _ + RRCLoad (18)

Uplink

Total R99 uplink loading = max { peakCSLoad , avgCS

Load + AvgPSLoad }+

ULCCHLoad _ + RRCLoad (19)

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DLCCHLoad _ is the Downlink loading of Common Channel.

ULCCHLoad _ is the Uplink loading of Common Channel.

RRCLoad is the loading during radio resource control success establish of RAB success

establish .

Either of them exceeds the threshold would drive the iteration procedure.

2.3.5 HSDPA Capacity Dimensioning

For HSDPA capacity dimensioning, average HSDPA cell throughput can be calculated based

on available resources like power and codes for HSDPA and average cell radius. The

following figure shows the procedure.

Figure 2-21 HSDPA capacity dimensioning

Simulation

Ec/Io distribution

Ior/Ioc distribution

Cell coverage

radius

Cell average

throughputEc/Io =>throughput

Power andCode forHSDPA

Based on the input cell radius, the Ior/Ioc (Ior and Ioc are the received power spectrum

density of own cell and other cell respectively and hence the ratio of Ior/Ioc reflects the

distance between UE and NodeB) and its probability distribution could be gotten from

simulation. For any Ior/Ioc, the Ec/Io based on the input HSDPA power could be calculated

by the following formula:

IorIoc

IorEc

IocIor

Ec

Io

Ec

/

/

*

Once the Ec/Io is calculated, the corresponding throughput can be gotten based on the relation

simulation results between Ec/Io and throughput.

Therefore, the cell average throughput can be calculated by the following formula:

kIocIork obRateThCell _Pr

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Of course, the required power of HSDPA to guarantee HSDPA cell average throughput

requirement can also be calculated.

2.3.6 HSUPA Capacity Dimensioning

Similar with capacity dimensioning of HSDPA, average HSUPA cell throughput for input load

or the load nee

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