eRAN7.0 LTE BBU3900 Description 02(20140630).pdf

September 29, 2017 | Author: Trọng Toàn | Category: Usb, Lte (Telecommunication), Global Positioning System, Bit Rate, Ethernet
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Description

eRAN7.0 LTE BBU3900 Description

Issue

02

Date

2014-06-30

HUAWEI TECHNOLOGIES CO., LTD.

Copyright © Huawei Technologies Co., Ltd. 2014. 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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Contents

Contents 1 Introduction .............................................................................................................................. 1 1.1 Functions ...................................................................................................................................................................... 1 1.2 Appearance ................................................................................................................................................................... 1 1.3 Boards ........................................................................................................................................................................... 2 1.3.1 LMPT......................................................................................................................................................................... 2 1.3.2 UMPT ........................................................................................................................................................................ 3 1.3.3 LBBP ......................................................................................................................................................................... 6 1.3.4 UBBP ......................................................................................................................................................................... 7 1.3.5 UTRP ......................................................................................................................................................................... 8 1.3.6 USCU......................................................................................................................................................................... 9 1.3.7 UFLP ....................................................................................................................................................................... 10 1.3.8 UPEU ....................................................................................................................................................................... 11 1.3.9 UEIU ........................................................................................................................................................................ 13 1.3.10 FAN ....................................................................................................................................................................... 14 1.4 Board Configuration ................................................................................................................................................... 15

2 Technical Specifications ........................................................................................................ 16 2.1 Baseband Specifications ............................................................................................................................................. 16 2.1.1 Maximum Number of Cells Supported Per Board ................................................................................................... 16 2.1.2 UE Number Specifications ...................................................................................................................................... 17 2.1.3 Maximum Throughput Per Board ............................................................................................................................ 19 2.1.4 Maximum Throughput Per Cell ............................................................................................................................... 20 2.1.5 Maximum Distance from the BBU .......................................................................................................................... 20 2.2 Capacity Specifications............................................................................................................................................... 21 2.3 Signaling Specifications ............................................................................................................................................. 23 2.4 Transmission Ports ...................................................................................................................................................... 24 2.5 Input Power................................................................................................................................................................. 24 2.6 Physical Specifications ............................................................................................................................................... 25 2.7 Environment Specifications ........................................................................................................................................ 25

3 Acronyms and Abbreviations ............................................................................................... 26

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eRAN7.0 LTE BBU3900 Description

1 Introduction

1

Introduction

1.1 Functions The BBU3900 is a baseband control unit that performs the following functions: 

Manages the entire eNodeB in terms of operation, maintenance, and system clock.



Processes signaling messages.



Provides physical ports for information exchange between the eNodeB and the transport network.



Provides an OM channel between the eNodeB and operation and maintenance center (OMC).



Processes uplink and downlink baseband signals.



Provides CPRI ports for communication with RF modules.



Provides ports for communication with environment monitoring devices.

An eNodeB can be configured with a maximum of two BBU3900s for higher processing capabilities.

1.2 Appearance The BBU3900, which has a case structure, is 19 inches wide and 2 U high. The BBU3900 can be installed in an indoor or outdoor protective cabinet.

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eRAN7.0 LTE BBU3900 Description

1 Introduction

Figure 1-1 shows the appearance of the BBU3900. Figure 1-1 Appearance of the BBU3900

1.3 Boards The BBU3900 can be configured with the following boards and units: 

Main control and transmission board: LTE main processing and transmission unit (LMPT), or universal main processing and transmission unit (UMPT)



Baseband processing board: LTE baseband processing unit (LBBP) and universal baseband processing unit (UBBP)



Universal transmission processing unit (UTRP)



Universal satellite card and clock unit (USCU)



Universal FE lightning protection unit (UFLP)



Universal power and environment interface unit (UPEU)



Universal environment interface unit (UEIU)



FAN unit

BBU3900 boards support plug-and-play, and users can configure the boards as required.

1.3.1 LMPT The LMPT is the main control and transmission board for the LTE network.

Panel Figure 1-2 shows the LMPT panel.

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eRAN7.0 LTE BBU3900 Description

1 Introduction

Figure 1-2 LMPT panel

Functions The LMPT performs the following functions: 

Controls and manages the entire eNodeB in terms of configuration, equipment, performance monitoring, and radio resources.



Processes signaling messages.



Provides a reference clock, transmission ports, and an OM channel to the LMT or U2000.

Ports Table 1-1 describes the ports on the LMPT. Table 1-1 Ports on the LMPT Identifier

Connector

Quantity

Description

SFP0 and SFP1

LC

2

FE/GE optical ports

FE/GE0 and FE/GE1

RJ45

2

FE/GE electrical ports

USB

USB

1

Software loading port

TST

USB

1

Test port

ETH

RJ45

1

Local maintenance and debug port

GPS

SMA

1

GPS port

1.3.2 UMPT The UMPT is a universal main control and transmission unit for the BBU3900. It manages the entire eNodeB in terms of OM, processes signaling messages, and provides clock signals for the BBU3900. There are four types of UMPTs: UMPTa2, UMPTa6, UMPTb1, and UMPTb2. Table 1-2 describes the differences between each UMPT type. Table 1-2 Difference between each UMPT type Type

Working Mode

Equipped with a Satellite Card

Data Rate of the CI Interface (Gbit/s)

UMPTa2

LTE

No

4.9

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1 Introduction

Type

Working Mode

Equipped with a Satellite Card

Data Rate of the CI Interface (Gbit/s)

UMPTa6

LTE

Yes

4.9

UMPTb1

LTE

No

2.5

Yes

2.5

GUL multi-mode UMPTb2

LTE GUL multi-mode

Panel Figure 1-3, Figure 1-4, Figure 1-5, and Figure 1-6 show the panels of UMPTa2, UMPTa6, UMPTb1, and UMPTb2, respectively. Figure 1-3 UMPTa2 panel

Figure 1-4 UMPTa6 panel

Figure 1-5 UMPTb1 panel

Figure 1-6 UMPTab2 panel

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Functions The UMPT performs the following functions: 

Controls and manages the entire eNodeB in terms of configuration, equipment, performance monitoring, radio resources, active/standby switchovers.



Processes signaling messages.



Provides a reference clock, transmission ports, and an OM channel to the LMT or U2000.



Transfers low-speed user-plane data and control and maintenance signals of all boards in the BBU through IDX1 to the target ports.

Ports Table 1-3 describes the ports on the UMPT. Table 1-3 Ports on the UMPT Identifier

Connector

Quantity

Description

FE/GE0

RJ45

1

FE/GE electrical port

FE/GE1

SFP

1

FE/GE optical port

CI

SFP

1

The port is used for BBU interconnection.

USB

1

The Universal Serial Bus (USB) port labeled "USB" can be used for eNodeB software upgrade, which is known as the USB-based upgrade mode. Note that this USB port can also function as a commissioning Ethernet port(2).

USB

(1)

The USB port labeled "CLK" is used to receive Time of Day (TOD) clock signals. In addition, this port can be used for clock tests. CLK

USB

1

Clock port

E1/T1

DB26, female

1

E1/T1 port supporting four E1s/T1s

GPS

SMA

1

The GPS port on the UMPTa2 and UMPTb1 is reserved for future use. The GPS port on the UMPTa6 and UMPTb2 is used for forwarding radio frequency (RF) signals received from the antenna to the satellite receiver.

RST

-

1

Reset button

NOTE

(1) The security of the USB port is ensured by encryption. (2) To log in to the eNodeB through the commissioning Ethernet port, ensure that the OM port has been enabled and the user has been authorized to log in to the eNodeB through the OM port.

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1.3.3 LBBP There are three types of LBBP: LBBPc, LBBPd1, LBBPd2, and LBBPd3.

Panel Figure 1-7 shows the LBBPc panel. Figure 1-7 LBBPc panel

The panel of the LBBPd1 is the same as that of the LBBPd2 and LBBPd3. Figure 1-8 shows the LBBPd1/LBBPd2/LBBPd3 panel. Figure 1-8 LBBPd1/LBBPd2/LBBPd3 panel

NOTE

The LBBPd1, LBBPd2, and LBBPd3 have silkscreens LBBPd1, LBBPd2, and LBBPd3 indicating their board types on the lower left corner of the board panel, respectively.

Functions The LBBP performs the following functions: 

Provides CPRI ports for communication with RF modules.



Processes uplink and downlink baseband signals.

Ports Table 1-4 describes the ports on the LBBPc. Table 1-4 Ports on the LBBPc Identifier

Connector

Quantity

Description

CPRI0 to CPRI5

SFP, female

6

Data transmission ports that interconnect with the RF modules. These ports support electrical and optical signal input and output.

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The ports on the LBBPd1 are the same as those on the LBBPd2 and LBBPd3. Table 1-5 describes the ports on the LBBPd1/LBBPd2/LBBPd3. Table 1-5 Ports on the LBBPd1/LBBPd2/LBBPd3 Identifier

Connector

Quantity

Description

CPRI0 to CPRI5

SFP, female

6

Data transmission ports that interconnect with the RF modules. These ports support electrical and optical signal input and output.

HEI

QSFP

1

Reserved port

1.3.4 UBBP There are three types of UBBP: UBBPd3, UBBPd4, UBBPd5, and UBBPd6.

Panel The panel of the UBBPd3 is the same as that of the UBBPd4, UBBPd5, and UBBPd6. Figure 1-8 shows the UBBPd3/UBBPd4/UBBPd5/UBBPd6 panel. Figure 1-9 UBBPd3/UBBPd4/UBBPd5/UBBPd6 panel

NOTE

The UBBPd3, UBBPd4, UBBPd5, and UBBPd6 have silkscreens UBBPd3, UBBPd4, UBBPd5, and UBBPd6 indicating their board types on the lower left corner of the board panel, respectively.

Functions The UBBP performs the following functions: 

Provides CPRI ports for communication with RF modules.



Processes uplink and downlink baseband signals.

Ports The ports on the UBBPd3 are the same as those on the UBBPd4, UBBPd5, and UBBPd6. Table 1-5 describes the ports on the UBBPd3/UBBPd4/UBBPd5/UBBPd6.

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Table 1-6 Ports on the UBBPd3/UBBPd4/UBBPd5/UBBPd6 Identifier

Connector

Quantity

Description

CPRI0 to CPRI5

SFP, female

6

Data transmission ports that interconnect with the RF modules. These ports support electrical and optical signal input and output.

HEI

QSFP

1

Reserved port

1.3.5 UTRP The type of UTRP is UTRPc.

Panel Figure 1-10 shows the UTRPc panel. Figure 1-10 UTRPc panel

Functions The UTRPc performs the following functions: 

Provides transmission for the LTE networks and enables theses networks to share the same IPSec tunnel.



Provides two Ethernet optical ports with a data rate of 100 Mbit/s or 1000 Mbit/s to perform the functions of MAC layer, and enables reception and transmission of Ethernet link data and analysis of MAC addresses; Provides four Ethernet electrical ports with a data rate of 10 Mbit/s, 100 Mbit/s, or 1000 Mbit/s to perform the functions of MAC layer and physical layer.

Ports Table 1-7 describes the ports on the UTRPc. Table 1-7 Ports on the UTRPc Identifier

Connector

Quantity

Description

FE/GE0 and FE/GE1

SFP

2

FE/GE optical ports

FE/GE2 to FE/GE5

RJ45

4

FE/GE electrical ports

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1.3.6 USCU The USCU is a universal satellite card and clock unit for the BBU3900. There are three types of USCUs: USCUb11, USCUb14, and USCUb22.

Panel The panel of the USCUb11 is the same as that of the USCUb14. Figure 1-11 shows the USCUb11/USCUb14 panel. Figure 1-11 USCUb11/USCUb14 panel

Figure 1-12 shows the USCUb22 panel. Figure 1-12 USCUb22 panel

Functions The USCU performs the following functions: 

The USCUb11 provides ports for communicating with the RGPS (for example, the RGPS on the reused equipment of the customer) and BITS equipment. It does not support GPS signals.



The USCUb14 does not support RGPS signals. It contains a UBLOX satellite card.



The USCUb22 does not support RGPS signals. It uses a Naviors satellite card, which must be purchased locally and installed onsite.

Ports The ports on the USCUb11, USCUb14, and USCUb22 are the same. Table 1-8 describes the ports on the USCUb11/USCUb14/USCUb22.

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Table 1-8 Ports on the USCUb11/USCUb14/USCUb22 Identifier

Connector

Quantity

Description

GPS

SMA coaxial

1



The GPS ports on the USCUb12 and USCUb21 are used for receiving GPS signals.



The GPS port on the USCUb11 is reserved and cannot be used for receiving GPS signals.

RGPS

PCB welded wiring terminal

1

The GPS ports on the USCUb14 and USCUb22 are used for receiving GPS signals. The GPS port on the USCUb11 is reserved. It cannot receive GPS signals.

TOD0

RJ45

1

The RGPS port on the USCUb11 is used for receiving RGPS signals. The RGPS ports on the USCUb14 and USCUb22 are reserved. They cannot receive RGPS signals.

TOD1

RJ45

1

Receives or transmits 1PPS+TOD signals.

BITS

SMA coaxial

1

Receives or transmits 1PPS+TOD signals, and receives TOD signals from the M1000.

M-1PPS

SMA coaxial

1

Receives BITS clock signals, and supports adaptive input of 2.048 MHz and 10 MHz clock reference source.

1.3.7 UFLP There are two types of UFLP: UFLP and UFLPb. The UFLP provides surge protection for FEs. The UFLPb provides surge protection for FEs/GEs.

Panel Figure 1-13 shows the UFLP panel. Figure 1-13 UFLP panel

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Figure 1-14 shows the UFLPb panel. Figure 1-14 UFLPb panel

Functions The UFLP provides surge protection for FEs. The UFLPb provides surge protection for FEs/GEs.

Ports Table 1-9 describes the ports on the UFLP. Table 1-9 Ports on the UFLP Identifier

Connector

Quantity

Description

INSIDE

FE0 and FE1

RJ45

2

Connects to a transmission board of the base station

OUTSIDE

FE0 and FE1

RJ45

2

Connects to an external transmission device

Table 1-10 describes the ports on the UFLPb. Table 1-10 Ports on the UFLPb Identifier

Connector

Quantity

Description

INSIDE

FE/GE0 and FE/GE1

RJ45

2

Connects to a transmission board of the base station

OUTSIDE

FE/GE0 and FE/GE1

RJ45

2

Connects to an external transmission device

1.3.8 UPEU The UPEU is a power module for the BBU3900. There are four types of UPEU: UPEUa, UPEUc, and UPEUd.

Panel Figure 1-15 shows the UPEUa panel. Issue 02 (2014-06-30)

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eRAN7.0 LTE BBU3900 Description

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Figure 1-15 UPEUa panel

Figure 1-16 shows the UPEUc panel. Figure 1-16 UPEUc panel

Figure 1-17 shows the UPEUd panel. Figure 1-17 UPEUd panel

Functions The UPEU performs the following functions: 

Provides two ports with each transmitting one RS485 signal and two ports with each transmitting four Boolean signals. The Boolean signals can only be dry contact or open collector (OC) signals.



The UPEUa converts -48 V DC input power into +12 V DC and provides an output power of 300 W.



The UPEUc converts -48 V DC input power into +12 V DC. A UPEUc provides an output power of 360 W. Two UPEUc boards provide a combined output power of 650 W.



The UPEUd converts -48 V DC input power into +12 V DC and provides an output power of 650 W.

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eRAN7.0 LTE BBU3900 Description

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Ports Table 1-11 describes the ports on the UPEUa/ UPEUc/UPEUd. Table 1-11 Ports on the UPEUa/ UPEUc/UPEUd Identifier

Connector

Quantity

Description

UPEUa: –48 V

7W2

1

Port for –48 V DC power input

UPEUc/UPEUd: –48 V

3V3

1

Port for –48 V DC power input

EXT-ALM0

RJ45

1

Port for Boolean inputs 0 to 3

EXT-ALM1

RJ45

1

Port for Boolean inputs 4 to 7

MON0

RJ45

1

Port for RS485 input 0

MON1

RJ45

1

Port for RS485 input 1

1.3.9 UEIU The UEIU transmits information reported by the environment monitoring device and alarm information to the main control board.

Panel Figure 1-18 shows the UEIU panel. Figure 1-18 UEIU panel

Functions The UEIU performs the following functions: 

Provides two ports, each transmitting one RS485 signal.



Provides two ports, each transmitting four Boolean signals, which can only be dry contact or OC signals.

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eRAN7.0 LTE BBU3900 Description 

1 Introduction

Transmits information reported by the environment monitoring device and alarm information to the main control board.

Ports Table 1-12 describes the ports on the UEIU. Table 1-12 Ports on the UEIU Identifier

Connector

Quantity

Description

EXT-ALM0

RJ45

1

Port for Boolean inputs 0 to 3

EXT-ALM1

RJ45

1

Port for Boolean inputs 4 to 7

MON0

RJ45

1

Port for RS485 input 0

MON1

RJ45

1

Port for RS485 input 1

1.3.10 FAN The FAN is a fan unit for the BBU3900. There are two fan unit types for the BBU3900: FAN and FANc.

Panel Figure 1-19 shows the FAN panel. Figure 1-19 FAN panel

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Figure 1-20 shows the FANc panel. Figure 1-20 FANc panel

Functions The FAN controls the rotation speed of the fans and monitors the temperature of the fan module. The FAN reports the status of the fans and the fan module to the BBU and dissipates heat from the BBU.

1.4 Board Configuration Figure 1-21 shows the typical board configuration for a BBU3900. Figure 1-21 Typical board configuration for a BBU3900

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2 Technical Specifications

2

Technical Specifications

2.1 Baseband Specifications 2.1.1 Maximum Number of Cells Supported Per Board Table 2-1 Maximum number of cells supported per baseband board Board

Number of Cells

LBBPc

3

Cell Bandwidth (MHz) 1.4/3/5/10/15/20

Antenna Configuration 3x20M 1T1R 3x20M 1T2R 3x20M 2T2R

LBBPd1

3

1.4/3/5/10/15/20

3x20M 1T1R 3x20M 1T2R 3x20M 2T2R

LBBPd2

3

1.4/3/5/10/15/20

3x20M 1T1R 3x20M 1T2R 3x20M 2T2R 3x20M 2T4R 3x20M 4T4R

LBBPd3

6

1.4/3/5/10/15/20

6x20M 1T1R 6x20M 1T2R 6x20M 2T2R

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Board

Number of Cells

UBBPd3

3

Cell Bandwidth (MHz) 1.4/3/5/10/15/20

Antenna Configuration 3x20M 1T1R 3x20M 1T2R 3x20M 2T2R

3

UBBPd4

1.4/3/5/10/15/20

3x20M 1T1R 3x20M 1T2R 3x20M 2T2R 3x20M 2T4R 3x20M 4T4R

6

UBBPd5

1.4/3/5/10/15/20

6x20M 1T1R 6x20M 1T2R 6x20M 2T2R

6

UBBPd6

1.4/3/5/10/15/20

6x20M 1T1R 6x20M 1T2R 6x20M 2T2R 6x20M 2T4R 6x20M 4T4R

NOTE

When a CPRI fiber optic cable is longer than 40 km (24.85 mi), the LBBPd3 board cannot support the 6x20 MHz 2T2R channel.

2.1.2 UE Number Specifications Table 2-2 UE number specifications Board

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Cell Bandwi dth(M Hz)

Maximum Number of UEs in RRC Connected Mode Per Board

Maximum Number of synchronized users Per Board

Maximum Number of UEs in RRC Connected Mode Per cell

Maximum Number of synchroni zed users Per cell

1.4

504

168

168

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Board

2 Technical Specifications

Cell Bandwi dth(M Hz)

Maximum Number of UEs in RRC Connected Mode Per Board

Maximum Number of synchronized users Per Board

Maximum Number of UEs in RRC Connected Mode Per cell

Maximum Number of synchroni zed users Per cell

3

1080

360

360

120

5

1800

600

600

200

10/15/20

1800

600

1200

400

1.4

504

300

168

100

3

1080

1080

360

360

5

1800

1800

600

600

10/15/20

3600

3600

1200

1200

1.4

1008

600

168

100

3

2160

2160

360

360

5

3600

3600

600

600

10/15/20

3600

3600

1200

1200

1.4

504

504

168

168

3

1080

1080

360

360

5

1800

1800

600

600

10/15/20

3600

3600

1200

1200

1.4

1008

1008

168

168

3

2160

2160

360

360

5

3600

3600

600

600

10/15/20

3600

3600

1200

1200

LBBPc

LBBPd1/ LBBPd2

LBBPd3

UBBPd3/ UBBPd4

UBBPd5

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Board

2 Technical Specifications

Cell Bandwi dth(M Hz)

Maximum Number of UEs in RRC Connected Mode Per Board

Maximum Number of synchronized users Per Board

Maximum Number of UEs in RRC Connected Mode Per cell

Maximum Number of synchroni zed users Per cell

1.4

1008

1008

168

168

3

2160

2160

360

360

5

3600

3600

600

600

10/15

3600

3600

1200

1200

UBBPd6

2.1.3 Maximum Throughput Per Board Table 2-3 Maximum throughput per baseband board Board

Specifications

LBBPc

Downlink throughput: 300 Mbit/s Uplink throughput: 100 Mbit/s

LBBPd1

Downlink throughput: 450 Mbit/s Uplink throughput: 225 Mbit/s

LBBPd2

Downlink throughput: 600 Mbit/s Uplink throughput: 225 Mbit/s

LBBPd3

Downlink throughput: 600 Mbit/s Uplink throughput: 300 Mbit/s

UBBPd3

Downlink throughput: 450 Mbit/s Uplink throughput: 225 Mbit/s

UBBPd4

Downlink throughput: 600 Mbit/s Uplink throughput: 225 Mbit/s

UBBPd5

Downlink throughput: 600 Mbit/s Uplink throughput: 300 Mbit/s

UBBPd6

Downlink throughput: 900 Mbit/s Uplink throughput: 450 Mbit/s

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2.1.4 Maximum Throughput Per Cell Table 2-4 Maximum throughput per cell Cell Bandwidth

Specifications

(MHz) 

1.4

DL cell MAC layer throughput: 8.7Mbps (at 2x2 MIMO, 64QAM)



UL cell MAC layer throughput: 6.4Mbps (at 2x2 MU-MIMO, 16QAM)



UL cell MAC layer throughput: 3.2Mbps (at 1x4 SIMO, 16QAM)



UL cell MAC layer throughput: 6.4Mbps (at 2x4 MU-MIMO, 16QAM)



3

DL cell MAC layer throughput: 22Mbps (at 2x2 MIMO, 64QAM)



UL cell MAC layer throughput: 16Mbps (at 2x2 MU-MIMO, 16QAM)



UL cell MAC layer throughput: 8Mbps (at 1x4 SIMO, 16QAM)



UL cell MAC layer throughput: 16Mbps (at 2x4 MU-MIMO, 16QAM)



5

DL cell MAC layer throughput: 36Mbps (at 2x2 MIMO, 64QAM)



UL cell MAC layer throughput: 27Mbps (at 2x2 MU-MIMO, 16QAM)



UL cell MAC layer throughput: 13Mbps (at 1x4 SIMO, 16QAM)



UL cell MAC layer throughput: 27Mbps (at 2x4 MU-MIMO, 16QAM)



10

DL cell MAC layer throughput: 73Mbps (at 2x2 MIMO, 64QAM)



UL cell MAC layer throughput: 55Mbps (at 2x2 MU-MIMO, 16QAM)



UL cell MAC layer throughput: 27Mbps (at 1x4 SIMO, 16QAM)



UL cell MAC layer throughput: 55Mbps (at 2x4 MU-MIMO, 16QAM)



15

DL cell MAC layer throughput: 110Mbps (at 2x2 MIMO, 64QAM)



UL cell MAC layer throughput: 81Mbps (at 2x2 MU-MIMO, 16QAM)



UL cell MAC layer throughput: 40Mbps (at 1x4 SIMO, 16QAM)



UL cell MAC layer throughput: 81Mbps (at 2x4 MU-MIMO, 16QAM)



20

DL cell MAC layer throughput: 150Mbps (at 2x2 MIMO, 64QAM)



UL cell MAC layer throughput: 100Mbps (at 2x2 MU-MIMO, 16QAM)



UL cell MAC layer throughput: 55Mbps (at 1x4 SIMO, 16QAM)



UL cell MAC layer throughput: 100Mbps (at 2x4 MU-MIMO, 16QAM)

2.1.5 Maximum Distance from the BBU Comment [xianghao1]:

Table 2-5 Maximum distance from the BBU Board

Specifications(km)

LBBPc/LBBPd1/UBBPd3

20

LBBPd2/UBBPd4

40

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eRAN7.0 LTE BBU3900 Description

2 Technical Specifications

Board

Specifications(km)

LBBPd3/UBBPd5/UBBPd6

Cell quantity≤3: 40 Cell quantity≥4: 20

2.2 Capacity Specifications 

Maximum number of busy hour call attempts (BHCAs) per eNodeB: The maximum number of busy hour call attempts (BHCAs) per eNodeB see 2.3 Signaling Specifications.



Maximum throughput per eNodeB: Table 2-6 lists the maximum throughput per eNodeB (packet size: 550 bytes). Table 2-6 Maximum throughput per eNodeB (packet size: 550 bytes) Board

Specifications

LMPT

Uplink data rate at the MAC layer: 300Mbit/s

Comment [xianghao2]:

Downlink data rate at the MAC layer: 450Mbit/s UMPT



Uplink and downlink data rate at the MAC layer: 1500Mbit/s

Maximum number of UEs in RRC_CONNECTED mode per eNodeB FDD: The maximum number of UEs in RRC_Connected mode supported by an eNodeB can be calculated using the following formula: Maximum number of UEs in RRC_Connected mode supported by an eNodeB = Min (Maximum number of UEs in RRC_Connected mode supported by the main control board, N x Maximum number of UEs in RRC_Connected mode supported by a baseband board) The main control board is the LMPT or UMPT. Table 2-7 lists the maximum number of UEs in RRC_CONNECTED mode supported by the main control board. Table 2-7 Maximum throughput per eNodeB (packet size: 550 bytes) Board

Specifications

LMPT

5400

UMPT

10800

N is the number of baseband boards, the baseband boards is LBBP or UBBP. The maximum number of UEs in RRC_CONNECTED mode supported by baseband board see 2.1.2 UE Number Specifications.

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eRAN7.0 LTE BBU3900 Description



2 Technical Specifications

Maximum Number of DRBs Supported: The maximum number of data radio bearers (DRBs) per user is eight. The maximum number of DRBs supported by an LMPT/UMPT/LBBP/UBBP is three times the maximum number of UEs in RRC_Connected mode supported. The maximum number of DRBs supported by an eNodeB is 32,400.

Error! Reference source not found. lists the capacity specifications of the 3900 series base station in typical configurations. Table 2-8 Capacity specifications of the 3900 series base station in typical configurations Mode

Configuration

LTE UMPTb2+6 (FDD) UBBPd6

Item

Specifications

Maximum number of cells per BBU

36 cells (2T2R); 18 cells (2T4R/[email protected])

LMPT+3 LBBPd2

UMPTb+6 LBBPd2

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Maximum number of busy hour call attempts (BHCAs) per eNodeB FDD

480000

Maximum throughput per eNodeB FDD

1500Mbit/s

Maximum number of UEs in RRC_CONNECTED mode per eNodeB FDD

10800

Maximum number of cells per BBU

18 cells([email protected], [email protected],[email protected]

Maximum number of busy hour call attempts (BHCAs) per eNodeB FDD

60000

Maximum throughput per eNodeB FDD

750Mbit/s

Maximum number of UEs in RRC_CONNECTED mode per eNodeB FDD

5400

Maximum number of cells per BBU

36 cells (2T2R);

Maximum number of busy hour call attempts (BHCAs) per eNodeB FDD

180000

Maximum throughput per eNodeB FDD

1500Mbit/s

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18 cells (2T4R/[email protected])

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eRAN7.0 LTE BBU3900 Description

Mode

2 Technical Specifications

Configuration

Item

Specifications

Maximum number of UEs in RRC_CONNECTED mode per eNodeB FDD

10800

2.3 Signaling Specifications Table 2-9 lists the signaling specifications of the LMPT, UMPT, LBBP and UBBP. Table 2-9 Signaling specifications of the LMPT, UMPT, LBBP and UBBP Specification

Signaling Specification(BHCA)

UMPTa2/ UMPTa6

140000

UMPTb1/UMPTb2

180000

LMPT

60000

LBBPc

60000

LBBPd1, LBBPd2, LBBPd3, LBBPd4

80000

UBBPd3, UBBPd4

90000

UBBPd5, UBBPd6

180000

The signaling specification of an eNodeB is calculated by the following formula: In LBBP+LMPT/UMPT scenarios, eNodeB signaling specifications = Min (N x LBBP signaling specifications, M x signaling specifications of the main control board), where N is the number of LBBP boards and M is the number of main control boards (LMPT or UMPT). In UBBPd+LMPT scenarios, eNodeB signaling specifications = Min (N x UBBPd signaling specifications, M x LMPT signaling specifications), where N is the number of UBBPd boards and M is the number of LMPT boards. In UBBPd+UMPT scenarios, eNodeB signaling specifications = N x UBBPd signaling specifications, where N is the number of UBBPd boards. NOTE

The signaling specifications of an eNodeB cannot exceed 480000 BHCA.

Table 2-10 lists the typical board combinations and the corresponding signaling specifications of eNodeBs. Table 2-10 Typical board combinations and the corresponding signaling specifications Specification

Signaling Specification(BHCA)

1 LMPT+1 LBBPc

60000

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eRAN7.0 LTE BBU3900 Description

2 Technical Specifications

Specification

Signaling Specification(BHCA)

1 LMPT+2 LBBPc

60000

1 LMPT+3 LBBPc

60000

1 UMPT+1 LBBPd

80000

1 UMPT+2 LBBPd

140000 (UMPTa) 160000 (UMPTb)

1 UMPT+3 LBBPd

140000 (UMPTa) 180000 (UMPTb)

1 UMPTb+1 UBBPd

90000 (UBBPd3/UBBPd4) 180000 (UBBPd5/UBBPd6)

2.4 Transmission Ports Table 2-11 Transmission ports Boards

Ports

LMPT

Two FE/GE electrical ports, two FE/GE optical ports, or one FE/GE optical port + one FE/GE electrical port

UMPT

One FE/GE electrical port +one FE/GE optical port+one E1/T1 port. (Each E1/TI port provides 4 E1s/T1s.)

UTRPc

Four FE/GE electrical ports + two FE/GE optical ports

2.5 Input Power Table 2-12 Input power Item

Specification

Input power

–48 V DC; voltage range: –38.4 V DC to –57 V DC

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2 Technical Specifications

2.6 Physical Specifications Table 2-13 Physical specifications Item

Specification

Dimensions (height x width x length)

86 mm x 442 mm x 310 mm

Weight

≤ 12 kg (in full configuration)

2.7 Environment Specifications Table 2-14 Environment specifications Item

Specification

Operating temperature

–20ºC to +50ºC (long-term) +50ºC to +55ºC (short-term)

Relative humidity

5% RH to 95% RH

Protection class

IP20

Atmospheric pressure

70 kPa to 106 kPa

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eRAN7.0 LTE BBU3900 Description

3 Acronyms and Abbreviations

3

Acronyms and Abbreviations

B BBU

baseband unit

BITS

building integrated timing supply

BHCA

busy hour call attempts

C CPRI

common public radio interface

D DC

direct current

DL

downlink

DRB

Data Radio Bearers

F FE

Fast Ethernet

G GE

Gigabit Ethernet

GLONASS

Global Navigation Satellite System

GPS

Global Positioning System

GSM

Global Service Mobile

H HDLC

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High-level Data Link Control

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eRAN7.0 LTE BBU3900 Description

HEI

3 Acronyms and Abbreviations

High Speed Extension Interface

I IPSec

IP Security

L LBBP

LTE baseband processing unit

LMT

local maintenance terminal

LTE

Long Term Evolution

M MAC

Media Access Control

MIMO

multi-input and multi-output

O OC

Optical Carrier

OM

operation and maintenance

OMC

operation and maintenance center

P PCB

printed circuit board

Q QSFP

Quad Small Form-factor Pluggable

R RGPS

Remote Global Positioning System

RH

relative humidity

S SFP

small form-factor pluggable

T TOD

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time of day

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eRAN7.0 LTE BBU3900 Description

3 Acronyms and Abbreviations

U UEIU

universal environment interface unit

UELP

universal E1/T1 lightning protection unit

UFLP

universal FE lightning protection unit

UL

uplink

UMPT

universal main processing and transmission unit

UPEU

universal power and environment interface unit

USB

Universal Serial Bus

USCU

universal satellite card and clock unit

UTRP

universal transmission processing unit

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