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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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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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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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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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eRAN7.0 LTE BBU3900 Description
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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2 Technical Specifications
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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eRAN7.0 LTE BBU3900 Description
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 Technical Specifications
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/4T4R@20MHz)
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（2T2R@20MHz, 2T4R@20MHz,4T4R@20MHz）
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/4T4R@20MHz)
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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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eRAN7.0 LTE BBU3900 Description
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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