Huawei BBU3900 Description

Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. i Copyright © Huawei Technologies Co., Ltd. 2018. 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]

Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. ii Contents 1 Overview ................................................................................................................................... 1 1.1 BBU3900&BBU3910 Functions ............................................................................................................................ 1 1.2 Exterior of the BBU3900&BBU3910 ..................................................................................................................... 2 1.3 BBU3900&BBU3910 Boards ................................................................................................................................ 2 1.3.1 LMPT ................................................................................................................................................................ 3 1.3.2 UMPT ................................................................................................................................................................ 4 1.3.3 LBBP ................................................................................................................................................................. 7 1.3.4 UBBP ................................................................................................................................................................. 8 1.3.5 UTRP ................................................................................................................................................................10 1.3.6 USCU ............................................................................................................................................................... 11 1.3.7 UELP ................................................................................................................................................................12 1.3.8 UFLP ................................................................................................................................................................13 1.3.9 UPEU ................................................................................................................................................................13 1.3.10 UEIU ...............................................................................................................................................................15 1.3.11 FAN.................................................................................................................................................................16 1.3.12 UCCU .............................................................................................................................................................18 1.4 BBU3900&BBU3910 Board Configuration ..........................................................................................................19 2 Technical Specifications ........................................................................................................ 20 2.1 Baseband Specifications .......................................................................................................................................20 2.2 Capacity ...............................................................................................................................................................21 2.3 Signaling Specifications .......................................................................................................................................22 2.4 CPRI Specifications..............................................................................................................................................22 2.5 Transmission Ports ...............................................................................................................................................23 2.6 Input Power ..........................................................................................................................................................24 2.7 Physical Specifications .........................................................................................................................................24 2.8 Environmental Specifications................................................................................................................................24 3 Acronyms and Abbreviations ............................................................................................... 25

Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 1 1 Overview 1.1 BBU3900&BBU3910 Functions 1.2 Exterior of the BBU3900&BBU3910 1.3 BBU3900&BBU3910 Boards 1.4 BBU3900&BBU3910 Board Configuration 1.1 BBU3900&BBU3910 Functions A BBU3900&BBU3910 is a baseband unit that performs the following functions:  Provides S1 ports for communication between an E-UTRAN NodeB (eNodeB) and an MME/S-GW, and X2 ports for communication between eNodeBs. E-UTRAN is short for evolved universal terrestrial radio access network.  Provides common public radio interface (CPRI) ports for communication with RRUs and processes uplink and downlink baseband signals. RRU is short for remote radio unit.  Manages the eNodeB through operation and maintenance (OM) and signaling message processing.  Provides an OM channel to the local maintenance terminal (LMT) or U2000. iManager U2000 (U2000). The U2000 is an integrated OM system designed by Huawei.  Provides clock ports for clock synchronization, alarm monitoring ports for environment monitoring, and a Universal Serial Bus (USB) port for commissioning using a USB flash drive. The security of the USB port is ensured by encryption. Compared with the BBU3900, the BBU3910 has enhanced backplane switching capabilities:  In the BBU3900, no direct route is available between slots 0, 1, 4, and 5, and data between them must be transferred by slot 2 or 3. In the BBU3910, however, data can be directly exchanged between slots 0 through 5. Figure 1-1 shows the slot connections in the BBU3900 and BBU39010.

Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 2 Figure 1-1 Slot connections in the BBU3900 and BBU39010  The backplane switching bandwidth for each pair of directly-connected slots in the BBU3910 is almost twice that in the BBU3900. 1.2 Exterior of the BBU3900&BBU3910 The BBU3900&BBU3910 is a case measuring 19 inch wide and 2 U high. It can be installed indoors, such as an office building or residence, or be installed in a cabinet with surge protection in an outdoor place, such as a basement, balcony, corridor, or garage. Figure 1-2 shows the exterior of the BBU3900&BBU3910. Figure 1-2 BBU3900&BBU3910 1.3 BBU3900&BBU3910 Boards The following boards can be installed in the BBU3900:  LMPT and UMPT

Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 3  LBBP and UBBP  UTRP  USCU  UELP and UFLP  UPEUa and UPEUc  UEIU  FAN and FANc  UCCU The following boards can be installed in the BBU3910:  UMPT  UBBP  UTRP  USCUb  UELP and UFLP  UPEUd  UEIU  FANd and FANe  UCCU 1.3.1 LMPT LMPT is short for Long Term Evolution (LTE) main processing and transmission unit. Panel Figure 1-3 shows the panel of the LMPT. Figure 1-3 LMPT panel Functions An LMPT performs the following functions:  Controls and manages the eNodeB configuration, devices, performance, and radio resources, and processes the eNodeB signaling.  Provides clock reference, transmission ports, and the maintenance link connecting to the operation and maintenance center (OMC). The OMC can be the LMT or U2000 client. Ports Table 1-1 describes the ports on the LMPT.

Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 4 Table 1-1 Ports on the LMPT Label Connecto r Number of Ports 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 The security of the USB port is ensured by encryption. TST USB 1 Testing port The TST port is used for commissioning the base station rather than importing or exporting the base station configuration. ETH RJ45 1 Local maintenance port GPS SMA 1 Global Positioning System (GPS) antenna port RST N/A 1 Hardware reset button 1.3.2 UMPT UMPT is short for universal main processing & transmission unit. The types of UMPTs are UMPTa6, UMPTb2 , UMPTb9 and UMPTe2. The UMPT integrates with a satellite card. Panel Figure 1-4 shows the panel of the UMPTa6. Figure 1-4 UMPTa6 panel Figure 1-5 shows the panel of the UMPTb2. Figure 1-5 UMPTb2 panel

Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 5 Figure 1-6 shows the panel of the UMPTe2. Figure 1-6 UMPTe2 panel Figure 1-7 shows the panel of the UMPTb9. Figure 1-7 UMPTb9 panel Functions A UMPT performs the following functions:  Performs OM functions, including configuration management, equipment management, performance monitoring, signaling processing, and active/standby switchover.  Provides clock reference, transmission ports, and the maintenance link connecting to the OMC. The OMC can be the LMT or U2000 client.  Provides the IDX1 channel through which low rate user panel data and control or maintenance signals of each board in the baseband unit (BBU) are transmitted to the target port. Ports Table 1-2 describes the ports on the UMTPa6/UMPTb2. Table 1-2 Ports on the UMTPa6/UMPTb2 Label Connecto r Number of Ports Description FE/GE0 RJ45 1 FE/GE electrical port FE/GE1 SFP 1 FE/GE optical port USB USB 1 Software loading and Ethernet commissioning port (1) The security of the USB port is ensured by encryption. (2) When the USB port functions as a commissioning Ethernet port, ensure that

Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 6 Label Connecto r Number of Ports Description an OM port has been opened and the user has obtained required authorities for accessing the base station through the OM port before accessing the base station through the USB port. CLK USB 1 The USB port with the CLK silkscreen functions as the TOD clock or test clock port. E1/T1 DB26, female 1 UMPTa2, UMPTa6, UMPTb1, or UMPTb2 supports E1/T1 port. The E1/T1 port ransmits and receives four links of E1/T1 signals. UMPTb9 does not support E1/T1 port. GPS SMA 1 GPS antenna port CI SFP 1 The port is used for BBU interconnection. RST N/A 1 Hardware reset button Table 1-3 describes the ports on the UMPTe2. Table 1-3 Ports on the UMPTe2 Identifie r Connector Quantity Description FE/GE0, FE/GE2 RJ45 2 FE/GE electrical port XGE1, XGE3 SFP 2 XGE optical port CI SFP female 1 Connects to the UCIU USB USB 1 A USB flash drive can be inserted into the port for software upgrade and base station commissioning CLK USB 1 Used for multiplexing the time of day (TOD) clock and test clock GPS SMA 1 Used for transmitting radio frequency (RF) signals received from the antenna to the satellite card. RST - 1 Reset button Table 1-4 describes the ports on the UMPTb9.

Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7 Table 1-4 Ports on the UMPTb9 Identifie r Connector Quantity Description FE/GE0 RJ45 1 FE/GE electrical port FE/GE1 SFP 1 FE/GE optical port CI SFP female 1 Connects to the UCIU USB USB 1 A USB flash drive can be inserted into the port for software upgrade and base station commissioning CLK USB 1 Used for multiplexing the time of day (TOD) clock and test clock GPS SMA 1 Used for transmitting radio frequency (RF) signals received from the antenna to the satellite card. RST - 1 Reset button 1.3.3 LBBP LBBP is short for LTE baseband processing unit. The types of LBBPs are LBBPc, LBBPd2 and LBBPd4. Panel Figure 1-8 shows the panel of the LBBPc. Figure 1-8 LBBPc panel Figure 1-9 shows the panel of the LBBPd2 and LBBPd4. Figure 1-9 LBBPd2 and LBBPd4 panel Functions An LBBP performs the following functions:

Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 8  Provides CPRI ports for communication with radio frequency (RF) modules.  Processes uplink and downlink baseband signals. Ports Table 1-5 shows the ports on the LBBPc. Table 1-5 Ports on the LBBPc Label Connector Number of Ports Description CPRI0 to CPRI5 SFP, female 6 Connected to the RF modules for transmitting service data, clock signals, and synchronization information. Table 1-6 shows the ports on the LBBPd2 or LBBPd4. Table 1-6 Ports on the LBBPd2 or LBBPd4 Label Connector Number of Ports Description CPRI0 to CPRI5 SFP, female 6 Connected to the RF modules for transmitting service data, clock signals, and synchronization information. HEI QSFP 1 The port is used for BBU interconnection. 1.3.4 UBBP There are three types of UBBPd: UBBPd4, UBBPd6 and UBBPd9, three types of UBBPe: UBBPe4, UBBPe6 and UBBPem, and UBBPf1.  The UBBPd is available as of eRAN TDD 7.0.  The UBBPe4 and UBBPe6 are available as of eRAN TDD 11.1.  The UBBPem is available as of eRAN TDD 12.1.  The UBBPf1 is available as of eRAN TDD 13.1. Panel The UBBPd4, UBBPd6 and UBBPd9 have the same panel, as shown in Figure 1-10.

Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 9 Figure 1-10 UBBPd panel The UBBPe4 and UBBPe6 have the same panel,as shown in Figure 1-11. Figure 1-11 UBBPe panel The panel of UBBPem is as shown in Figure 1-12. Figure 1-12 UBBPem panel The panel of UBBPf1 is as shown in Figure 1-13. Figure 1-13 UBBPf1 panel Function The UBBP performs the following functions:  Provides CPRI ports for communication with the RF modules.  Processes uplink and downlink baseband signals. Port Table 1-7 describes the ports on the UBBP.

Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 10 Table 1-7 Ports on the UBBP Board Identifi er Connec tor Quantit y Description UBBPd/ UBBPe CPRI0 to CPRI5 SFP female 6 Data transmission ports that interconnect the BBU3900&BBU3910 and the RF modules. These ports support electrical and optical signal input and output. UBBPem CPRI0 to CPRI1 QSFP 2 They are data transmission ports connecting a BBU to an RMU3900A, and support input and output of optical signals. UBBPf1 CPRI0 to CPRI2 QSFP 3 They are data transmission ports connecting a BBU to an RMU3900A, and support input and output of optical signals. UBBPd/ UBBPe/ UBBPem /UBBPf1 HEI QSFP 1 It is a baseband interconnection port used for data transmission between baseband processing boards. 1.3.5 UTRP UTRPc is short for universal transmission processing unit. Panel Figure 1-14 shows the panel of the UTRPc. Figure 1-14 UTRPc panel Functions The UTRPc is supported in eRAN TDD 3.0 and later versions. It provides four FE/GE electrical ports and two FE/GE optical ports. Ports Table 1-8 shows the ports on the UTRPc. Table 1-8 Ports on the UTRPc Label Connector Number of Ports Description FE/GE2 to FE/GE5 RJ45 4 FE/GE electrical

Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 11 Label Connector Number of Ports Description ports FE/GE0 and FE/GE1 SFP 2 FE/GE optical ports 1.3.6 USCU USCU is short for universal satellite card and clock unit. The types of USCUs are USCUb11 and USCUb21. Panel Figure 1-15 shows the panel of the USCUb11. Figure 1-15 USCUb11 panel Figure 1-16 shows the panel of the USCUb21. Figure 1-16 USCUb21 panel Functions The functions of the USCUb11 and USCUb21 are as follows:  The USCUb11 provides ports to communicate with the RGPS (for example the reused equipment of the customer) and BITS equipment. It does not support GPS signals.  The USCUb22 does not support RGPS signals. It uses a Naviors satellite card, which must be purchased locally and installed onsite. Ports The USCUb11 and USCUb21 all provide the same ports as described in Table 1-9.

Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 12 Table 1-9 Ports on the USCUb11/USCUb21 Label Connector Number of Ports Description GPS SMA coaxial 1 Receives GPS signals RGPS PCB welded wiring terminal 1 Receives RGPS signals TOD0 RJ45 1 Receives or transmits 1PPS+TOD signals TOD1 RJ45 1 Receives or transmits 1PPS+TOD signals, and receives TOD signals from the Metro1000. M-1PPS SMA coaxial 1 Receives 1PPS signals from the Metro1000 BITS SMA coaxial 1 Receives BITS clock signals, and supports adaptive input of 2.048 MHz and 10 MHz reference clocks 1.3.7 UELP UELP is short for universal E1/T1 lightning protection unit. It provides surge protection for E1/T1 and RGPS signals. Panel Figure 1-17 shows the panel of the UELP. Figure 1-17 UELP panel Ports Table 1-10 shows the ports on the UELP. Table 1-10 Ports on the UELP Label Connector Number of Ports Description INSIDE DB25 1 Connects to an eNodeB transmission board OUTSIDE DB26 1 Connects to an external transmission

Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 13 Label Connector Number of Ports Description device 1.3.8 UFLP UFLP is short for universal FE lightning protection unit. It provides surge protection for FE/GE signals. Panel Figure 1-18 shows the panel of the UFLPb. Figure 1-18 UFLPb panel Ports Table 1-11 shows the ports on the UFLPb. Table 1-11 Ports on the UFLPb Label Connect or Number of Ports Description INSIDE FE/GE0 and FE/GE1 RJ45 2 Connects to an eNodeB transmission board OUTSIDE FE/GE0 and FE/GE1 RJ45 2 Connects to an external transmission device 1.3.9 UPEU The UPEU is short for universal power and environment interface unit. The BBU3900 supports UPEUa and UPEUc. The BBU3910 supports only the UPEUd. Panel Figure 1-19 shows the panel of the UPEUa.

Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 14 Figure 1-19 UPEUa panel Figure 1-20 shows the panel of the UPEUc. Figure 1-20 UPEUc panel Figure 1-21 shows the UPEUd panel. Figure 1-21 UPEUd panel Functions The UPEUa and UPEUc perform the following functions:  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. One UPEUc provides an output power of 360 W, and two UPEUc boards provide a combined output power of 650 W.

Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 15  Both the UPEUa and the UPEUc support two links of RS485 signals and eight links of Boolean signals.  The UPEUd converts -48 V DC input power into +12 V DC and provides an output power of 650 W. Ports The UPEUa , UPEUc and UPEUd both provide the same ports as described in Table 1-12 Table 1-12 Ports on the UPEU Label Connector Number of Ports Description -48 V 3V3 1 Provides –48 V DC power input. EXT-ALM0 RJ45 1 Receives Boolean signal inputs 0 to 3 EXT-ALM1 RJ45 1 Receives Boolean signal inputs 4 to 7 MON0 RJ45 1 Receives RS485 signal input 0 MON1 RJ45 1 Receives RS485 signal input 1 1.3.10 UEIU The UEIU is short for universal environment interface unit. It transmits information reported by the environment monitoring device and alarm information to the main control board. Panel Figure 1-22 shows the panel of the UEIU. Figure 1-22 UEIU panel Functions A UEIU performs the following functions:  Provides two links of RS485 signals.  Provides eight links of Boolean signals.

Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 16  Transmits information reported by the environment monitoring device and alarm information to the main control board. Ports Table 1-13 shows the ports on the UEIU. Table 1-13 Ports on the UEIU Label Connector Number of Ports Description EXT-ALM0 RJ45 1 Receives Boolean signal inputs 0 to 3 EXT-ALM1 RJ45 1 Receives Boolean signal inputs 4 to 7 MON0 RJ45 1 Receives RS485 signal input 0 MON1 RJ45 1 Receives RS485 signal input 1 1.3.11 FAN There are two fan unit types for the BBU3900: FAN and FANc. And the FANd is a fan unit for the BBU3910.. Panel Figure 1-23 shows the panel of the FAN. Figure 1-23 FAN panel Figure 1-24 shows the panel of the FANc.

Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 17 Figure 1-24 FANc panel Figure 1-25 shows the FANd panel. Figure 1-25 FANd panel

Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 18 Figure 1-26 FANe panel Functions The FAN dissipates heat from the BBU3900&BBU3910. It monitors the inlet temperature, controls the rotation speed of the fans, and reports the status of the fans to the LMPT or UMPT in the BBU3900&BBU3910. 1.3.12 UCCU The UCCU, a universal inter-connection combo unit, allows a long-distance connection between the BBU and USU, allowing a remote distance connection in BBU interconnection scenarios. Panel Figure 1-27 shows the UCCU panel. Figure 1-27 UCCU panel Functions The UCCU exchanges baseband data between BBUs, allowing a long-distance connection between the BBU and USU in BBU interconnection scenarios. Ports Table 1-14 lists the ports on the UCCU.

Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 19 Table 1-14 Ports on the UCCU Silkscree n Connecto r Quantity Description M0 to M3 QSFP 4 Function as primary interconnection ports and connect to secondary interconnection ports. Each optical port has two CPRI TX/RX channels with a maximum rate of 10.1376 Gbit/s and two SRIO TX/RX channels with a maximum rate of 6.25 Gbit/s. M4/S1 QSFP 1 Functions as a primary interconnection port and connects to a secondary interconnection port. Has two CPRI TX/RX channels with a maximum rate of 10.1376 Gbit/s and two SRIO TX/RX channels with a maximum rate of 6.25 Gbit/s. M5/S0 QSFP 1 Functions as a secondary interconnection port and connects to a primary interconnection port. Has four 10GE TX/RX channels. 1.4 BBU3900&BBU3910 Board Configuration Figure 1-28 shows the typical configuration of the BBU3900&BBU3910. Figure 1-28 Typical configuration of the BBU3900&BBU3910

Issue 01 (2018-02-05) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 20 2 Technical Specifications 2.1 Baseband Specifications 2.2 Capacity 2.3 Signaling Specifications 2.4 CPRI Specifications 2.5 Transmission Ports 2.6 Input Power 2.7 Physical Specifications 2.8 Environmental Specifications 2.1 Baseband Specifications The following table describes cell specifications of an LBBP working in LTE TDD mode. Board Number of Cells Cell Bandwidth (MHz) Antenna Configuration LBBPc 3 5/10/20 1x20 MHz 4T4R 3x10 MHz 2T2R 3x20 MHz 2T2R 3x10 MHz 4T4R LBBPd2 3 5/10/15/20 3x20 MHz 2T2R 3x20 MHz 4T4R LBBPd4 3 10/20 3x20 MHz 8T8R The following table describes cell specifications of a UBBP working in LTE TDD mode. Board Number of Cells Cell Bandwidth (MHz) Antenna Configuration

Issue 01 (2018-02-05) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 21 Board Number of Cells Cell Bandwidth (MHz) Antenna Configuration UBBPd4 3 5/10/15/20 3x20 MHz 2T2R 3x20 MHz 4T4R UBBPd6 6 5/10/15/20 6x20 MHz 2T2R 6x20 MHz 4T4R 3 10/15/20 3x20 MHz 8T8R UBBPd9 3 10/15/20 3x20 MHz 8T8R UBBPe4 6 5/10/15/20 6x20 MHz 2T2R 6x20 MHz 4T4R 3 10/15/20 3x20 MHz 8T8R UBBPe6 12 5/10/15/20 12x20 MHz 2T2R 12x20 MHz 4T4R 6 10/15/20 12x20 MHz 8T8R UBBPem 2 10/15/20 2x20MHz 64T64R UBBPf1 3 10/15/20 3x20MHz 64T64R 2.2 Capacity Table 2-1 Capacity Item Specifications Maximum number of cells per BBU  When configured with an LMPT:BBU3900: 18 cells (2T2R/4T4R, 5/10/15/20 MHz) or 12 cells (8T8R, 10/15/20 MHz)  When configured with a UMPTa/UMPTb:36 cells (2T2R/4T4R, 5/10/15/20 MHz) or 18 cells (8T8R, 10/15/20 MHz)  When configured with a UMPTe:72 cells (2T2R/4T4R, 5/10/15/20 MHz or 8T8R, 10/15/20 MHz) Maximum throughput per cell with the 20 MHz bandwidth  Downlink data rate at the Media Access Control (MAC) layer: 284 Mbit/s (SA2, DL 4x4 MIMO base on TM3 or TM4, UBBPd/UBBPe，DL 256QAM)  Uplink data rate at the MAC layer: 40 Mbit/s (SA1, UL 2x8 MU-MIMO, UBBPd) 27 Mbit/s (SA1, UL 2x8 MU-MIMO, LBBPd) Maximum throughput per  When the UMPTe2 is used, sum of uplink and downlink data rates at the MAC layer is 10 Gbit/s.

Issue 01 (2018-02-05) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 22 Item Specifications eNodeB  When the UMPTa6 or UMPTb2 is used, sum of uplink and downlink data rates at the MAC layer is 1.5 Gbit/s.  When the UMPTb9 is used, sum of uplink and downlink data rates at the MAC layer is 2.0 Gbit/s.  When the LMPT is used, sum of uplink and downlink data rates at the MAC layer is 750 Mbit/s. Maximum number of UEs in RRC_CONNECTE D mode in an eNodeB  When configured with a LMPT:5400  When configured with a UMPTa/UMPTb:10800  When configured with a UMPTe2: − 14400 (configured with one UMPTe2 board); − 28800 (configured with two UMPTe2 boards) Data radio bearer (DRB) Eight DBRs per user equipment (UE) 2.3 Signaling Specifications The following table lists the signaling specifications of the LMPT, UMPT, LBBP, and UBBP boards based on the definition of one BHCA.  288000 per UMPTa6  360000 per UMPTb2 or UMPTb9  180000 per LMPT  1620000 per UMPTe2  63000 per LBBPc  126000 per LBBPd  270000 per UBBPd4  396000 per UBBPd6 or UBBPd9  432000 per UBBPe4  648000 per UBBPe6  648000 per UBBPem  648000 per UBBPf1 2.4 CPRI Specifications The following table lists the specifications of CPRI ports on an LBBP board. Board Quantity of CPRI Ports CPRI Port Rate (Gbit/s) Topology Type

Issue 01 (2018-02-05) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 23 Board Quantity of CPRI Ports CPRI Port Rate (Gbit/s) Topology Type LBBPc 6 1.25, 2.5, or 4.9 Star, chain, and ring topologies LBBPd 6 1.25, 2.5, 4.9, 6.144, or 9.8 Star, chain, and ring topologies The following table lists the specifications of CPRI ports on a UBBP. Board Quantity of Ports CPRI Port Rate (Gbit/s) Topology Type UBBPd,UBBPe4, UBBPe6 6 1.25, 2.5, 4.9, 9.8, or 6.144 Star, chain, and ring topologies UBBPem 2 40/100 Star, chain, and ring topologies UBBPf1 3 40/100 Star, chain, and ring topologies 2.5 Transmission Ports Table 2-2 Transmission ports Board Specifications LMPT Two FE/GE electrical ports, two FE/GE optical ports, or one FE/GE optical port + one FE/GE electrical port UMPTa6 or UMPTb2 One FE/GE electrical port, one FE/GE optical port, and one DB26 port transmitting four links of E1/T1 signals UMPTb9 One FE/GE electrical port, one FE/GE optical port UMPTe2 2 FE/GE electrical port, and 2 XGE optical port UTRPc Four FE/GE electrical ports and two FE/GE optical ports

Issue 01 (2018-02-05) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 24 2.6 Input Power Table 2-3 Input power Item Specifications Input power –48 V DC (voltage range: –38.4 V DC to –60 V DC) 2.7 Physical Specifications Table 2-4 Physical specifications Item Specifications Dimensions (height x width x depth) 86 mm x 442 mm x 310 mm (3.46 in. x 17.40 in. x 12.20 in.) Weight ≤ 15 kg (33.08 lb) (in full configuration) 2.8 Environmental Specifications Table 2-5 Environmental specifications Item Specifications Working temperature –20°C to +55°C (–4°F to +131°F) (long term) +55°C to +60°C (131°F to 140°F) (short term) NOTE Short term indicates that a base station does not work for over 15 days within a year or that a base station does not continuously work for over 72 hours. Relative humidity 5% RH to 95% RH Ingress Protection (IP) rating IP20 Atmospheric pressure 70 kPa to 106 kPa

Issue 01 (2018-02-05) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 25 3 Acronyms and Abbreviations B BBU baseband unit C CPRI common public radio interface E eNodeB E-UTRAN NodeB E-UTRAN evolved universal terrestrial radio access network F FAN fan unit FE fast Ethernet G GE gigabit Ethernet GPS Global Positioning System I IP Ingress Protection L LBBP LTE baseband processing unit LMPT LTE main processing and transmission unit LMT local maintenance terminal LTE Long Term Evolution M MME mobility management entity

Issue 01 (2018-02-05) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 26 MIMO multiple-input multiple-output O OM operation and maintenance P PPS pulse per second R RRU remote radio unit RGPS Remote Global Positioning System S S-GW serving gateway T TOD time of day U UPEU universal power and environment interface unit USB Universal Serial Bus USCU universal satellite clock unit UTRP universal transmission processing unit