UMTS RAN14.0 Dimensioning Rules(20120706)
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Transcript of UMTS RAN14.0 Dimensioning Rules(20120706)
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UMTS RAN14.0
Dimensioning Rules
Issue 01
Date 2012-07-06
HUAWEI TECHNOLOGIES CO., LTD.
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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
written consent of Huawei Technologies Co., Ltd.
Trademarks and Permissions
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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UMTS RAN14.0
Dimensioning Rules Change History
Issue 01 (2012-07-06) Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd.
ii
Change History
SN Date Revision Description Version Author
2012-7-6 RAN14.0 version Yaoyao 42671
Liyuanjun 50545
Wangyanling 00200183
Yueguojun 37848
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UMTS RAN14.0
Dimensioning Rules Contents
Issue 01 (2012-07-06) Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd.
iii
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
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UMTS RAN14.0
Dimensioning Rules 1 Introduction to UMTS RAN Dimensioning
Issue 01 (2012-07-06) Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd.
1
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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UMTS RAN14.0
Dimensioning Rules 1 Introduction to UMTS RAN Dimensioning
Issue 01 (2012-07-06) Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd.
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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 1 Introduction to UMTS RAN Dimensioning
Issue 01 (2012-07-06) Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd.
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UMTS RAN14.0
Dimensioning Rules 2 NodeB Dimensioning Guide
Issue 01 (2012-07-06) Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd.
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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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Dimensioning Rules 2 NodeB Dimensioning Guide
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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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Dimensioning Rules 2 NodeB Dimensioning Guide
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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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Dimensioning Rules 2 NodeB Dimensioning Guide
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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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Dimensioning Rules 2 NodeB Dimensioning Guide
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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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Dimensioning Rules 2 NodeB Dimensioning Guide
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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)
Basic Hardware/Software Original Configuration Additional Configuration
Transport Interface Unit 1NUTI 0
Baseband Processing Unit 1HBBI+1EBBI 0
RF Module 3MTRU+3MAFU 0
WCDMA Main Control Unit 1NMPT+1NMON 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)
Basic Hardware/Software Original Configuration Additional Configuration
Transport Interface Unit 1NUTI 0
Baseband Processing Unit 1HBBI+1 EBBI Add 1EDLP
RF Module 3MTRU+3MAFU 3MTRU+3MAFU
WCDMA Main Control Unit 1NMPT+1NMON 0
2x2 MIMO Function (per Cell) 0 6
Table 2-9 Upgrade to HSPA+ MIMO (10W+10W/C) (3 x 2 configuration, WRFU)
Basic Hardware/Software Original Configuration Additional Configuration
Transport Interface Unit 1NUTI 0
Baseband Processing Unit 1HBBI+1EBBI Add 1EDLP
RF Module 3MTRU+3MAFU 3WRFU
WCDMA Main Control Unit 1NMPT+1NMON 0
2x2 MIMO Function (per Cell) 0 6
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)
Basic Hardware/Software Original Configuration Additional Configuration
Transport Interface Unit 1NUTI 0
Baseband Processing Unit 1HBBI+1EBBI 0
RF Module 3MTRU+3MAFU 0
WCDMA Main Control Unit 1NMPT+1NMON 0
DL 64QAM Function (per Cell) 6 0
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)
Basic Hardware/Software Original Configuration Additional Configuration
Transport Interface Unit 1NUTI 0
Baseband Processing Unit 1HBBI+1EBBI 1EULPd
RF Module 3MTRU+3MAFU 0
WCDMA Main Control Unit 1NMPT+1NMON 0
UL 16QAM Function 0 6
Upgrade to IC
Table 2-12 Upgrade from HSUPA phase2 (20W/C) to IC (3 x 2 configuration)
Basic Hardware/Software Original Configuration Additional Configuration
Transport Interface Unit 1NUTI 0
Baseband Processing Unit 1HBBI+1EBBI 1EULPd
RF Module 3MTRU+3MAFU 0
WCDMA Main Control Unit 1NMPT+1NMON 0
IC Function 0 6
Upgrade to FDE
Table 2-13 Upgrade from HSPA (20W/C) to FDE (3 x 2 configuration)
Basic Hardware/Software Original Configuration Additional Configuration
Transport Interface Unit 1NUTI 0
Baseband Processing Unit 1HBBI+1EBBI 1EULPd
RF Module 3MTRU+3MAFU 0
WCDMA Main Control Unit 1NMPT+1NMON 0
FDE Function 0 6
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Dimensioning Rules 2 NodeB Dimensioning Guide
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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)
Basic Hardware/Software Original Configuration Additional Configuration
Transport Interface Unit 1NUTI 0
Baseband Processing Unit 1HBBI+1EBBI Add 1EDLP
RF Module 3MTRU+3MAFU 3MTRU+3MAFU
WCDMA Main Control Unit 1NMPT+1NMON 0
DL 64QAM Function (per Cell) 6 0
2x2 MIMO Function (per Cell) 0 6
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)
Basic Hardware/Software Original Configuration Additional Configuration
Transport Interface Unit 1NUTI 0
Baseband Processing Unit 1HBBI+1EBBI Add 1EDLP
RF Module 3MTRU+3MAFU 3WRFU
WCDMA Main Control Unit 1NMPT+1NMON 0
DL 64QAM Function (per Cell) 6 0
2x2 MIMO Function (per Cell) 0 6
DL 64QAM+MIMO Function 0 6
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)
Basic Hardware/Software Original Configuration Additional Configuration
Transport Interface Unit 1NUTI 0
Baseband Processing Unit 1HBBI+1EBBI ADD 2EDLP+1EULPd
RF Module 6WRFU 0
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Basic Hardware/Software Original Configuration Additional Configuration
WCDMA Main Control Unit 1NMPT+1NMON 0
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)
Basic Hardware/Software Original Configuration Additional Configuration
Transport Interface Unit 1NUTI 0
Baseband Processing Unit 1HBBI+1EBBI Add 2EDLP+1EULPd
RF Module 3WRFU Add 3WRFU
WCDMA Main Control Unit 1NMPT+1NMON 0
DL DC-HSDPA Function 6 0
DL 2x2 MIMO Function 0 6
DL DC-HSDPA+MIMO function 0 6
Upgrade to UL DC-HSUPA (RAN14.0)
Table 2-18 Upgrade from HSUPA to UL DC-HSUPA (3 x 2 configuration, 20W/carrier)
Basic Hardware/Software Original Configuration Additional Configuration
Transport Interface Unit 1NUTI 0
Baseband Processing Unit 1HBBI+1EBBI 0
RF Module 3MTRU+3MAFU 0
WCDMA Main Control Unit 1NMPT+1NMON 0
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.
Transport Unit Configurations
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
Baseband Unit Configurations
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
channel is 40 W. One RRU3828 can support 4 carriers within 60M frequency bandwidth, per
carrier 20W.
The RRU3829 supports 2T2R with two Tx channels. The maximum radio output power per
channel is 60 W. One RRU3829 can support 4 carriers within 60M frequency bandwidth, per
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)
Basic Hardware/Software Original Configuration Additional Configuration
BBU Unit 1BBU3806 1EBBC
RF Module 3RRU3801C 0
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Basic Hardware/Software Original Configuration Additional Configuration
HSUPA Introduction Package (per NodeB) 1 0
HSUPA Phase2 (per NodeB) 0 1
Upgrade to HSPA+ 64QAM
Table 2-26 Upgrade to HSPA+ 64QAM (3 x 2 configuration, 20 W per carrier)
Basic Hardware/Software Original Configuration Additional Configuration
BBU Unit 2BBU3806 1EBBC
RF Module 3RRU3801C 0
DL 64QAM Function (per Cell) 0 6
The Baseband Processing Unit (6Cell) supports six cells in the downlink and thus supports six
64QAM cells.
Upgrade to HSPA+ MIMO
Table 2-27 Upgrade to HSPA+ MIMO (10W+10W/C) (3 x 2 configuration)
Basic Hardware/Software Original Configuration Additional Configuration
BBU Unit 2BBU3806 2EBBC
RF Module 3RRU3801C 3RRU3804 or RRU3801E
2x2 MIMO Function (per Cell) 0 6
Table 2-28 Upgrade to HSPA+ MIMO (10W+10W/C) (3 x 2 configuration,RRU3808)
Basic Hardware/Software Original Configuration Additional Configuration
BBU Unit 2BBU3806 2EBBC
RF Module 3RRU3801C 3RRU3804 or RRU3801E
2x2 MIMO Function (per Cell) 0 6
In MIMO mode, both the Baseband Processing Unit (6Cell) and the Baseband Processing
Unit (3Cell) support MIMO on a maximum of three cells.
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Upgrade to DC-HSDPA
Table 2-29 Upgrade from 64QAM to DC-HSDPA+64QAM (3 x 2 configuration, 20 W per carrier)
Basic Hardware/Software Original Configuration Additional Configuration
BBU Unit 1BBU3806+1EBBC 0
RF Module 3RRU3801C 0
DL 64QAM Function (per Cell) 6 0
DC-HSDPA Function 0 6
Upgrade to UL 16QAM
Table 2-30 Upgrade from HSUPA phase2 (20W/C) to UL 16QAM (3 x 2 configuration)
Basic Hardware/Software Original Configuration Additional Configuration
BBU Unit 1BBU3806+1EBBC 1BBU3806+1EBBCd
RF Module 3RRU3801C 0
UL 16QAM Function 0 6
Upgrade to IC
Table 2-31 Upgrade from HSUPA phase2 (20W/C) to IC (3 x 2 configuration)
Basic Hardware/Software Original Configuration Additional Configuration
BBU Unit 1BBU3806+1EBBC 1BBU3806+1EBBCd
RF Module 3RRU3801C 0
IC Function 0 6
Upgrade to FDE
Table 2-32 Upgrade from HSPA phase2 (20W/C) to FDE (3 x 2 configuration)
Basic Hardware/Software Original Configuration Additional Configuration
BBU Unit 1BBU3806+1EBBC 1BBU3806+1EBBCd
RF Module 3RRU3801C 0
FDE Function 0 6
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Upgrade to DL 64QAM+MIMO
Table 2-33 Upgrade from DL 64QAM(20W/C) to DL 64QAM+MIMO (10W+10W/C) (3 x 2 configuration)
Basic Hardware/Software Original Configuration Additional Configuration
BBU Unit 2BBU3806+1EBBC 1EBBC
RF Module 3RRU3801C 3RRU3804 or RRU3801E
DL 64QAM Function (per Cell) 6 0
2x2 MIMO Function (per Cell) 0 6
DL 64QAM+MIMO Function 0 6
Table 2-34 Upgrade from DL 64QAM(20W/C) to DL 64QAM+MIMO (10W+10W/C) (3 x 2 configuration, RRU3808)
Basic Hardware/Software Original Configuration Additional Configuration
BBU Unit 2BBU3806+1EBBC 1EBBC
RF Module 3RRU3801C 3RRU3808 swap 3RRU3801C
DL 64QAM Function (per Cell) 6 0
2x2 MIMO Function (per Cell) 0 6
DL 64QAM+MIMO Function 0 6
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)
Basic Hardware/Software Original Configuration Additional Configuration
BBU Unit 1BBU3806+1EBBC Add 1BBU3806+1EBBC
RF Module 3RRU3808 0
DL 2x2 MIMO Function (per Cell) 6 0
DC-HSDPA Function 0 6
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)
Basic Hardware/Software Original Configuration Additional Configuration
BBU Unit 2BBU3806+1EBBC 1EBBC
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
Upgrade to DL DC-HSDPA+1xMIMO(RAN14.0)
Table 2-37 Upgrade from HSUPA to UL DC-HSUPA (3 x 2 configuration, 20W/carrier)
Basic Hardware/Software Original Configuration Additional Configuration
BBU Unit 1BBU3806+1EBBC 0
RF Module 3RRU3801C 0
HSUPA Function 6 0
DC-HSUPA Function 0 6
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
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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.
Transport Unit Configurations
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
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Baseband Unit Configurations
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)
HSUPA Users(2ms 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
WBBPb3 6 cells 256 256 90 codes 144 96 32
WBBPb4 6 cells 384 384 90 codes 144 96 48
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 -* -* -*
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Board Type
Cell Uplink R99/HSUPA CE
Downlink R99 CE
HSDPA Capacity
Feature Support HSDPA Users
HSUPA Users(10ms TTI,SRB over HSUPA)
HSUPA Users(2ms TTI,SRB over HSUPA)
WBBPf2 6 cells 256 384 90 codes -* -* -*
WBBPf3 6 cells 384 512 90 codes -* -* -*
WBBPf4 6 cells 512 768 90 codes -* -* -*
*: 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
WBBPb2 64 users 96 users 60 users 96 users
WBBPb3 64 users 96 users 60 users 96 users
WBBPb4 64 users 96 users 60 users 96 users
WBBPd1 64 users 96 users 60 users 96 users
WBBPd2 64 users 128 users 60 users 128 users
WBBPd3 64 users 128 users 60 users 128 users
WBBPf1 64 users 128 users 60 users 128 users
WBBPf2 64 users 128 users 60 users 128 users
WBBPf3 64 users 128 users 60 users 128 users
WBBPf4 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.
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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
50 CNBAP/s 80 CNBAP/s 100
CNBAP/s
110
CNBAP/s
120 CNBAP/s
WMPT+3
WBBPb/d
50 CNBAP/s 80 CNBAP/s 100
CNBAP/s
130
CNBAP/s
170 CNBAP/s
WMPT+4
WBBPb/d
50 CNBAP/s 80 CNBAP/s 100
CNBAP/s
130
CNBAP/s
170 CNBAP/s
WMPT+5
WBBPb/d
NA NA NA NA 170 CNBAP/s
WMPT+6
WBBPb/d
NA NA NA NA 170 CNBAP/s
UTRP+W
MPT+1W
BBPb/d
30 CNBAP/s 40 CNBAP/s 45
CNBAP/s
55 CNBAP/s 60 CNBAP/s
UTRP+W
MPT+2W
BBPb/d
50 CNBAP/s 80 CNBAP/s 100
CNBAP/s
110
CNBAP/s
120 CNBAP/s
UTRP+W
MPT+3W
BBPb/d
60 CNBAP/s 130 CNBAP/s 130
CNBAP/s
165
CNBAP/s
180 CNBAP/s
UTRP+W
MPT+4W
BBPb/d
60 CNBAP/s 170 CNBAP/s 170
CNBAP/s
200
CNBAP/s
240 CNBAP/s
UTRP+W
MPT+5W
BBPb/d
NA NA NA NA 250 CNBAP/s
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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.
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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
channel is 40 W. One RRU3808 can support 4 carriers within 60M frequency bandwidth, per
carrier 20W.
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The RRU3828 supports 2T2R with two Tx channels. The maximum radio output power per
channel is 40 W. One RRU3828 can support 6 carriers within 60M frequency bandwidth, per
carrier 13W
The RRU3829 supports 2T2R with two Tx channels. The maximum radio output power per
channel is 60 W. One RRU3829 can support 6 carriers within 60M frequency bandwidth, per
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
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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.
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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
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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.
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Figure 2-14 Internal structure of a BTS3900L cabinet
Figure 2-15 shows the internal structure of a BTS3900L (Ver.C) cabinet.
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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)
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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
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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)
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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
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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.
Upgrade to HSPA+ 64QAM
Table 2-49 Upgrade to HSPA+ 64QAM (3 x 2 configuration, 20 W per carrier)
Basic Hardware/Software Original Configuration Additional Configuration
RF Module 3 0
Baseband Processing Unit 1 WBBPb (6Cell) 0
WCDMA Main Control Unit 1 0
DL 64QAM Function (per Cell) 0 6
The Baseband Processing Unit (6Cell) supports six cells in the downlink and thus supports six
64QAM cells.
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Upgrade to HSPA+ MIMO
Table 2-50 Upgrade to HSPA+ MIMO (10W+10W/C) (3 x 2 configuration)
Basic Hardware/Software Original Configuration Additional Configuration
RF Module (Except RRU3808) 3 3
Baseband Processing Unit 1 WBBPb (6Cell) 1 WBBPb or WBBPd
WCDMA Main Control Unit 1 0
2x2 MIMO Function (per Cell) 0 6
Table 2-51 Upgrade to HSPA+ MIMO (10W+10W/C) (3 x 2 configuration, RRU3808)
Basic Hardware/Software Original Configuration Additional Configuration
RRU3808 3 0
Baseband Processing Unit 1 WBBPb (6Cell) 1 WBBPb or WBBPd
WCDMA Main Control Unit 1 0
2x2 MIMO Function (per Cell) 0 6
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 2-52 Upgrade from 64QAM to DC-HSDPA+64QAM (3 x 2 configuration, 20 W per carrier)
Basic Hardware/Software Original Configuration Additional Configuration
RF Module 3 0
Baseband Processing Unit 1 WBBPb (6Cell) 0
WMPT 1 0
DL 64QAM Function (per Cell) 6 0
DC-HSDPA Function 0 6
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.
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Upgrade to UL 16QAM
Table 2-53 Upgrade from HSUPA phase2 (20W/C) to UL 16QAM (3 x 2 configuration)
Basic Hardware/Software Original Configuration Additional Configuration
RF Module 3 0
Baseband Processing Unit 1 WBBPb (6Cell) 1 WBBPd
WMPT 1 0
UL 16QAM Function 0 6
Upgrade to IC
Table 2-54 Upgrade from HSUPA phase2 (20W/C) to IC (3 x 2 configuration)
Basic Hardware/Software Original Configuration Additional Configuration
RF Module 3 0
Baseband Processing Unit 1 WBBPb (6Cell) 1 WBBPd
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)
Basic Hardware/Software Original Configuration Additional Configuration
RF Module 3 0
Baseband Processing Unit 1 WBBPb (6Cell) 1 WBBPd
WMPT 1 0
FDE Function 0 6
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Upgrade to DL 64QAM+MIMO
Table 2-56 Upgrade from DL 64QAM(20W/C) to DL 64QAM+MIMO (10W+10W/C) (3 x 2 configuration)
Basic Hardware/Software Original Configuration Additional Configuration
RF Module (Except RRU3808) 3 3
Baseband Processing Unit 1 WBBPb (6Cell) 1 WBBPb or WBBPd
WMPT 1 0
DL 64QAM Function (per Cell) 6 0
2x2 MIMO Function (per Cell) 0 6
DL 64QAM+MIMO Function 0 6
Table 2-57 Upgrade from DL 64QAM(20W/C) to DL 64QAM+MIMO (10W+10W/C) (3 x 2 configuration, RRU3808)
Basic Hardware/Software Original Configuration Additional Configuration
RRU3808 3 0
Baseband Processing Unit 1 WBBPb (6Cell) 1 WBBPb or WBBPd
WMPT 1 0
DL 64QAM Function (per Cell) 6 0
2x2 MIMO Function (per Cell) 0 6
DL 64QAM+MIMO Function 0 6
Upgrade to DL DC-HSDPA+2xMIMO(RAN13.0)
Table 2-58 Upgrade from DL 64QAM+MIMO(2x10W/C) to DL DC-HSDPA+2xMIMO (2x10W/C) (3 x 2 configuration, RRU3808)
Basic Hardware/Software Original Configuration Additional Configuration
RF Module 3 0
Baseband Processing Unit 2 WBBPb (6Cell) 1 WBBPb or 1WBBPd
WMPT 1 0
DL 2x2 MIMO Function 6 0
DL DC-HSDPA Function 0 6
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Basic Hardware/Software Original Configuration Additional Configuration
DL DC-HSDPA+MIMO function 0 6
Table 2-59 Upgrade from DL DC-HSDPA(20W/C) to DL DC-HSDPA+2xMIMO (2x10W/C) (3 x 2 configuration, RRU3808)
Basic Hardware/Software Original Configuration Additional Configuration
RF Module 3 0
Baseband Processing Unit 1 WBBPb (6Cell) 2 WBBPb or 2WBBPd
WMPT 1 0
DL DC-HSDPA Function 6 0
DL 2x2 MIMO Function 0 6
DL DC-HSDPA+MIMO function 0 6
Upgrade to UL DC-HSUPA (RAN14.0)
Table 2-60 Upgrade from HSUPA to UL DC-HSUPA (3 x 2 configuration, 20W/carrier)
Basic Hardware/Software Original Configuration Additional Configuration
RF Module 3 0
Baseband Processing Unit 1 WBBPd2 0
WMPT 1 0
HSUPA Function 6 0
DC-HSUPA Function 0 6
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.
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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
Detailed capacity dimensioning is depicted as following.
Traffic per cell of VOIP over HSPA service:
CelliUseriCell UserNumTrafficTraffic __ (10)
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
Detailed capacity dimensioning is depicted as following.
Traffic per cell of PTT over HSPA service:
CelliUseriCell UserNumTrafficTraffic __ (13)
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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UMTS RAN14.0
Dimensioning Rules 2 NodeB Dimensioning Guide
Issue 01 (2012-07-06) Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd.
55
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