Description: Huawei Technologies Co., LTD

BBU5900
Description
Issue 07
Date 2018-09-07
HUAWEI TECHNOLOGIES CO., LTD.

Copyright © Huawei Technologies Co., Ltd. 2018. All rights reserved.
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and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.
All other trademarks and trade names mentioned in this document are the property of their respective
holders.
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within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements,
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Huawei Technologies Co., Ltd.

Address: Huawei Industrial Base
Bantian, Longgang
Shenzhen 518129
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Website: http://www.huawei.com
Email: support@huawei.com
Issue 07 (2018-09-07) i
Copyright © Huawei Technologies Co., Ltd.
BBU5900
Description Contents
Contents
1 Introduction ........................................................................................................................... 1
1.1 Functions ............................................................................................................................................................................... 1
1.2 Exterior .................................................................................................................................................................................. 1
1.3 Boards .................................................................................................................................................................................... 2
1.3.1 UMPT ................................................................................................................................................................................. 3
1.3.2 UBBP.................................................................................................................................................................................. 8
1.3.3 USCU ............................................................................................................................................................................... 11
1.3.4 UPEU................................................................................................................................................................................ 12
1.3.5 UEIU................................................................................................................................................................................. 13
1.3.6 FAN................................................................................................................................................................................... 14
1.4 Board Configuration ........................................................................................................................................................... 15
1.4.1 Board Configuration for a Single-RAT BBU5900 ........................................................................................................ 16
1.4.2 Board Configuration for a Separate-MPT BBU5900 .................................................................................................... 18
1.4.3 Board Configuration for a Co-MPT BBU5900 ............................................................................................................. 23
2 Technical Specifications ..................................................................................................... 25

2.1 Baseband Specifications ..................................................................................................................................................... 25
2.1.1 GSM Baseband Specifications........................................................................................................................................ 25
2.1.2 UMTS Baseband Specifications ..................................................................................................................................... 26
2.1.3 LTE Baseband Specifications ......................................................................................................................................... 26
2.1.3.1 LTE FDD Baseband Specifications ............................................................................................................................. 26
2.1.3.2 LTE NB-IoT Baseband Specifications ........................................................................................................................ 31
2.1.3.3 LTE FDD+NB-IoT Baseband Specifications ............................................................................................................. 34
2.1.3.4 LTE TDD+NB-IoT Baseband Specifications ............................................................................................................. 37
2.1.4 NR Baseband Specifications ........................................................................................................................................... 38
2.1.5 Co-BBP Baseband Specifications ................................................................................................................................... 47
2.2 Capacity Specifications ...................................................................................................................................................... 63
2.2.1 GSM Capacity Specifications ......................................................................................................................................... 63
2.2.2 UMTS Capacity Specifications ...................................................................................................................................... 63
2.2.3 LTE Capacity Specifications ........................................................................................................................................... 63
2.2.3.1 LTE FDD Capacity Specifications .............................................................................................................................. 63
2.2.3.2 LTE NB-IoT Capacity Specifications.......................................................................................................................... 64
2.2.3.3 LTE FDD+NB-IoT Capacity Specifications ............................................................................................................... 65
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BBU5900
Description Contents
2.2.3.4 LTE FDD+TDD Capacity Specifications ................................................................................................................... 66

2.2.4 NR Capacity Specifications ............................................................................................................................................ 67
2.2.5 Multi-RAT Capacity Specifications................................................................................................................................ 67
2.3 Signaling Specifications ..................................................................................................................................................... 69
2.3.1 LTE Signaling Specifications.......................................................................................................................................... 69
2.3.1.1 LTE FDD Signaling Specifications ............................................................................................................................. 70
2.3.1.2 LTE NB-IoT Signaling Specifications ........................................................................................................................ 70
2.3.1.3 LTE FDD+NB-IoT Signaling Specifications.............................................................................................................. 71
2.3.1.4 LTE FDD+TDD Signaling Specifications .................................................................................................................. 72
2.3.1.5 LTE TDD+NB-IoT Signaling Specifications.............................................................................................................. 72
2.3.2 NR Signaling Specifications ........................................................................................................................................... 72
2.3.3 Signaling Specifications of Multi-RAT Base Stations .................................................................................................. 73
2.4 CPRI Specifications ............................................................................................................................................................ 75
2.5 Transmission Port Specifications ....................................................................................................................................... 80
2.6 Equipment Specifications ................................................................................................................................................... 81
2.7 Traffic Model ...................................................................................................................................................................... 82
2.7.1 LTE FDD Traffic Model .................................................................................................................................................. 82
2.7.2 LTE NB-IoT Traffic Model ............................................................................................................................................. 85
2.7.3 NR Traffic Model............................................................................................................................................................. 87
3 Acronyms and Abbreviations............................................................................................. 90

4 Appendix .............................................................................................................................. 92
4.1 Appendix 1: NR Spectrum List .......................................................................................................................................... 92
4.2 Appendix 2: QSA28............................................................................................................................................................ 93
Issue 07 (2018-09-07) Copyright © Huawei Technologies Co., Ltd. iii

BBU5900
Description 1 Introduction
1 Introduction
 In this document, "G" is short for GSM, "U" for UMTS, "L" for LTE FDD, "T" for LTE TDD, "M"
for LTE NB-IoT, and "N" for NR.
 Unless otherwise specified, in this document, "LTE" refers to LTE FDD, LTE NB-IoT, LTE
FDD+NB-IoT, and LTE FDD+TDD.
1.1 Functions
1.2 Exterior
1.3 Boards
1.4 Board Configuration
1.1 Functions
The BBU5900 is a baseband control unit that provides the following functions:
 Manages the entire base station system in terms of operation and maintenance (OM) and
system clock.
 Processes signaling messages.
 Provides physical ports for information exchange between the base station and the
transport network.
 Provides an OM channel between the base station and the LMT, SMT, or U2000.
 Processes uplink and downlink baseband signals, and provides common public radio
interface (CPRI) ports for communication with radio frequency (RF) modules.
 Provides ports for receiving and transmitting signals from environment monitoring
devices.
1.2 Exterior
The BBU5900, 19 inches wide and 2 U high, is a universal baseband unit that can be applied
to diverse radio access technologies (RATs).
The BBU5900 exteriors with half-width and full-width slots are shown in the following two
figures.
Issue 07 (2018-09-07) Copyright © Huawei Technologies Co., Ltd. 1

BBU5900
Figure 1-1 BBU5900 exterior with half-width slots
Figure 1-2 BBU5900 exterior with full-width slots
1.3 Boards
The following table lists the boards supported by a BBU5900.
Table 1-1 BBU5900 boards
Board Board Subboard Type

Type Name
Main UMPTb UMPTb1, UMPTb2, UMPTb3, and UMPTb9

control
board UMPTe UMPTe1 and UMPTe2
UMPTg UMPTg1, UMPTg2, and UMPTg3
Baseband UBBPd UBBPd1, UBBPd2, UBBPd3, UBBPd4, UBBPd5, and

processing UBBPd6
board
UBBPe UBBPe1, UBBPe2, UBBPe3, UBBPe4, UBBPei, UBBPem,
UBBPex2, UBBPe5, and UBBPe6
UBBPg UBBPg2, UBBPg2a, and UBBPg3

BBU5900
Board Board Subboard Type

Type Name
Baseband UBBPf UBBPfw1

processing
board
Satellite USCU USCUb11 and USCUb14
card and
clock unit
Power and UPEU UPEUe

environmen
t interface
unit
Environme UEIU UEIUb

nt
monitoring
board
Fan unit FAN FANf
1.3.1 UMPT
The UMPT is a universal main processing and transmission unit. A BBU5900 can be
configured with a UMPTb, UMPTe, or UMPTg.
Functions
The UMPT provides the following functions:
 Manages configurations and devices, monitors performance, and processes signaling of a
base station.
 Processes signaling and manages resources for other BBU boards.
 Provides the USB port, transmission port, and maintenance port for signal transmission,
automatic software upgrade, and BBU maintenance on the LMT or U2020.
Panel
Figure 1-3 shows the UMPTb1 panel.
Figure 1-3 UMPTb1 panel
Figure 1-4 shows the UMPTb2 panel.

BBU5900
Figure 1-4 UMPTb2 panel
Figure 1-5 shows the UMPTb3 or UMPTb9 panel.
Figure 1-5 UMPTb3 or UMPTb9 panel
Figure 1-6 shows the UMPTe panel.
Figure 1-6 UMPTe panel
Figure 1-7 shows the UMPTg panel.
Figure 1-7 UMPTg panel
Ports
Table 1-2 describes the ports on the UMTPb1 or UMPTb2.
Table 1-2 Ports on the UMPTb1 or UMPTb2
Silkscreen Connector Port Quantity Description
FE/GE0 RJ45 1 FE/GE electrical

port
FE/GE1 SFP 1 FE/GE optical port
CI SFP female 1 Used for BBU

interconnection or

BBU5900

interconnection with
the USU
USB USB 1 Used for software

upgrade and base
station
commissioning
through a USB flash
drive
CLK USB 1 Used for
multiplexing time of
day (TOD) clock
and test clock
signals
E1/T1 DB26 female 1 Used for input and

output of four
channels of E1/T1
signals
GPS SMA 1  The GPS port on

the UMPTb1 is
reserved for
future use.
 The GPS port on
the UMPTb2 is
used for
transmitting RF
signals from the
antenna to the
satellite card.
RST N/A 1 Reset button
Table 1-3 describes the ports on the UMPTb3 or UMPTb9.
Table 1-3 Ports on the UMPTb3 or UMPTb9
FE/GE0 RJ45 1 FE/GE electrical port
FE/GE1 SFP 1 FE/GE optical port
CI SFP female 1 Connecting to a universal

cascading interface unit
(UCIU)
USB USB 1 Used for software upgrade
and base station
commissioning through a
USB flash drive

BBU5900
CLK USB 1 Used for multiplexing TOD

and test clock signals
GPS SMA 1  The GPS port on the

UMPTb3 is reserved for
future use.
 The GPS port on the
UMPTb9 is used for
transmitting RF signals
from the antenna to the
satellite card.
Table 1-4 describes the ports on the UMPTe.
Table 1-4 Ports on the UMPTe
FE/GE0 and RJ45 2 FE/GE electrical

FE/GE2 ports
XGE1 and XGE3 SFP 2 XGE optical ports
CI SFP female 1 Connecting to a

UCIU

upgrade and base
station
commissioning
through a USB flash
drive
CLK USB 1 Used for
multiplexing TOD
and test clock
signals
GPS SMA 1 Used for
transmitting RF
signals from an
antenna to the
satellite card
Table 1-5 describes the ports on the UMPTg.

BBU5900
Table 1-5 Ports on the UMPTg
FE/GE0 and RJ45 2 FE/GE electrical

FE/GE2 ports
YGE1 and YGE3 SFP 2 YGE optical ports
CI SFP female 1 Connecting to a

UCIU

upgrade and base
station
commissioning
through a USB flash
drive
CLK USB 1 Used for

multiplexing TOD
and test clock
signals
GPS SMA 1 Used for

transmitting RF
signals from an
antenna to the
satellite card
Supported RATs
The following table lists the RATs supported by the UMPTb, UMPTe, and UMPTg.
Table 1-6 RATs supported by the UMPTb, UMPTe, and UMPTg
Board Supported RAT
UMPTb Single-mode: GSM, UMTS, LTE FDD, LTE NB-IoT, LTE TDD
Multimode: GU, GL, UL, GUL
UMPTe Single-mode: GSM, UMTS, LTE FDD, LTE NB-IoT, LTE TDD, NR TDD
Multimode: GU, GL, UL, GUL, LN
UMPTg Single-mode: GSM, UMTS, LTE FDD, LTE NB-IoT, LTE TDD, NR FDD,
NR TDD
Multimode: GU, GL, UL, GUL, LN, GN, UN, GUN, GLN, ULN, GULN

BBU5900
1.3.2 UBBP
The UBBP is a universal baseband processing unit. A BBU5900 can be configured with the
following types of UBBP boards:
 UBBPd (UBBPd1/UBBPd2/UBBPd3/UBBPd4/UBBPd5/UBBPd6)
 UBBPe (UBBPe1/UBBPe2/UBBPe3/UBBPe4/UBBPe5/UBBPe6/UBBPex2)
 UBBPf (UBBPfw1)
 UBBPg (UBBPg2/UBBPg2a/UBBPg3)
 For details of the UBBPei, see RMU3900A Description.

 For details of the UBBPem, UBBPf1, and UBBPg4, see DBS5900 LTE TDD Product Description.
Functions
The UBBP provides the following functions:
 Provides CPRI ports for communication with RF modules.
 Supports deployment of multiple RATs on one UBBP.
Panel
The panels of the UBBPd1, UBBPd2, UBBPd3, UBBPd4, UBBPd5, and UBBPd6 are the
same, as shown in Figure 1-8.
Figure 1-8 UBBPd panel
The panels of the UBBPe1, UBBPe2, UBBPe3, UBBPe4, UBBPe5, UBBPe6, and UBBPg are
the same, as shown in Figure 1-9.
Figure 1-9 UBBPe or UBBPg panel
Figure 1-10 shows the UBBPex2 panel.

BBU5900
Figure 1-10 UBBPex2 panel
Figure 1-11 shows the UBBPfw1 panel.
Figure 1-11 UBBPfw1 panel
Ports
Table 1-7 describes the ports on the UBBPd, UBBPe, or UBBPg.
Table 1-7 Ports on the UBBPd, UBBPe, or UBBPg
CPRI0 to CPRI5 SFP female 6 Ports used to interconnect

the BBU with RF modules
for the input and output of
electrical and optical
transmission signals
HEI QSFP 1 Port used to interconnect
baseband processing boards
for data transmission
Table 1-8 describes the ports on the UBBPfw1.
Table 1-8 Ports on the UBBPfw1
Silkscreen Connector Port Description

Quantity
CPRI0 to CPRI2 SFP female 3 Ports used to interconnect the BBU

with RF modules for the input and
output of optical transmission
signals
CPRI3 to CPRI5 QSFP 3 Ports used to interconnect the BBU

BBU5900
Silkscreen Connector Port Description

Quantity
with RF modules for the input and
output of optical transmission
signals
HEI QSFP 1 Port used to interconnect baseband
processing boards for data
transmission
Supported RATs
The following table lists the RATs supported by the UBBP.
Table 1-9 RATs supported by the UBBP

Board Supported RAT
UBBPd1 GSM, UMTS, GU

UBBPd2 GSM, UMTS, GU
UBBPd3 GSM, UMTS, LTE FDD, LTE NB-IoT, GU, GL, LM
UBBPd6 GSM, UMTS, LTE FDD, LTE NB-IoT, GU, GL, UL, UM, LM, GUL, ULM
UBBPe1 UMTS, LTE FDD, LTE NB-IoT, LM

UBBPe2 UMTS, LTE FDD, LTE NB-IoT, LM
UBBPe3 UMTS, LTE FDD, LTE NB-IoT, UL, UM, LM, ULM
UBBPe4 UMTS, LTE FDD, LTE NB-IoT, UL, UM, LM, ULM, TM
UBBPe5 UMTS, LTE FDD, LTE NB-IoT, UL, UM, LM, ULM
UBBPe6 UMTS, LTE FDD, LTE NB-IoT, UL, UM, LM, ULM, TM
UBBPex LTE FDD
2
UBBPfw NR TDD
1
UBBPg2 UMTS, LTE FDD, LTE NB-IoT, NR, UL, UM, LM, UN, LN, ULM, LMN
UBBPg2 UMTS, LTE FDD, LTE NB-IoT, NR, UL, UM, LM, UN, LN, ULM, LMN
a
UBBPg3 UMTS, LTE FDD, LTE NB-IoT, NR, UL, UM, LM, UN, LN, TN, ULM,
LMN

BBU5900
1.3.3 USCU
The USCU is a universal satellite card and clock unit. A BBU5900 can be configured with a
USCUb11 or USCUb14.
Functions
The USCU provides the following functions:
 The USCUb11 provides ports to communicate with the Remote Global Positioning
System (RGPS) and building integrated timing supply (BITS) equipment. It does not
support GPS signals.
 The USCUb14 contains a u-blox satellite card. This board does not support RGPS
signals.
Panel
The USCUb11 and USCUb14 have the same panel, as shown in Figure 1-12.
Figure 1-12 USCUb11 or USCUb14 panel
Ports
The USCUb11 and USCUb14 have the same ports, as shown in Table 1-10.
Table 1-10 Ports on the USCUb11 or USCUb14
GPS SMA 1  The GPS port on

the USCUb14
receives GPS
signals.
 The GPS port on
the USCUb11 is
reserved and
cannot receive
GPS signals.
RGPS PCB welded wiring 1  The RGPS port

terminal on the USCUb11
receives RGPS
signals.
 The RGPS port
on the USCUb14
is reserved. It

BBU5900

cannot receive
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
M1000.
M-1PPS SMA 1 Receives 1PPS
signals from the
M1000.
BITS SMA 1 Receives BITS
clock signals, and
supports an adaptive
input from 2.048
MHz and 10 MHz
clock sources.
GSM and UMTS do not support 1PPS+TOD clock signals.
1.3.4 UPEU
The UPEU is a universal power and environment interface unit. A BBU5900 can be
configured with a UPEUe.
Functions
 Converts –48 V DC input power into +12 V DC and provides an output power of 1100 W.
Two UPEUe boards support 1100 W hot backup or 2000 W load sharing.
 Provides two ports with each transmitting one channel of RS485 signals and two ports
with each transmitting four channels of Boolean signals.
Panel
Figure 1-13 shows the UPEUe panel.

BBU5900
Figure 1-13 UPEUe panel
Ports
Table 1-11 describes the ports on the UPEUe.
Table 1-11 Ports on the UPEUe

–48 V HDEPC 1 Port for –48 V DC

power input
EXT-ALM0 RJ45 1 Port for Boolean
signal inputs 0 to 3

MON0 RJ45 1 Port for RS485
signal input 0

signal input 1
1.3.5 UEIU
The UEIU is a universal environment interface unit. A BBU5900 can be configured with a
UEIUb.
Functions
A UEIU performs the following functions:
 Provides two ports, each transmitting one channel of RS485 signals.
 Provides two ports, each transmitting four channels of Boolean signals, which can only
be dry contact or ordinary clock (OC) signals.
 Transmits information reported by the environment monitoring device and alarm
information to the main control board.
Panel
Figure 1-14 shows the UEIUb panel.

BBU5900
Figure 1-14 UEIUb panel
Ports
Table 1-12 describes the ports on the UEIUb.
Table 1-12 Ports on the UEIUb




signal input 0
signal input 1
1.3.6 FAN
The FAN is a fan unit. A BBU5900 can be configured with an FANf.
Functions
The FAN provides heat dissipation for a BBU, controls the rotational speed of the fans,
detects the temperature of the FAN board, and reports the status of the fans and FAN board.
Panel
Figure 1-15 shows the FANf panel.

BBU5900
Figure 1-15 FANf panel
1.4 Board Configuration

The following figure shows the BBU5900 slots.
Unless otherwise specified, board configuration in this document is based on a BBU5900 with
half-width slots.
Figure 1-16 Distribution of half-width slots in a BBU5900
Figure 1-17 Distribution of full-width slots in a BBU5900
Among slots 0 to 5, any two horizontally adjacent half-width slots can be reconstructed into a
full-width slot. The number of the full-width slot is the same as that of the half-width slot on

BBU5900
the left before the reconstruction. The following figure shows an example of BBU5900 slots
in hybrid mode.
Figure 1-18 Distribution of BBU5900 slots in hybrid mode
The UPEUe, FANf, and UEIUb boards are configured as follows:

 The UPEUe is installed in slot 19. If power supply backup is required, another UPEUe is
installed in slot 18.
 The FANf is installed in slot 16.
 The UEIUb is installed in slot 18.
1.4.1 Board Configuration for a Single-RAT BBU5900

Typical Board Configuration for a GSM BBU5900
Main control board: One UMPTb or UMPTe board is installed in slot 7.
Baseband processing board: A maximum of two UBBPd boards are installed, in descending
order of priority, in slots 4, 2, 0, 1, 3, and 5.
Figure 1-19 Typical board configuration for a GSM BBU5900
Typical Board Configuration for a UMTS BBU5900

Main control board: One UMPTb, UMPTe, or UMPTg board is installed in slot 7
(recommended). If main control board backup is required, another main control board is
Baseband processing board: A maximum of six UBBPd, UBBPe, or UBBPg boards are
installed, in descending order of priority, in slots 4, 2, 0, 1, 3, and 5.

BBU5900
Figure 1-20 Typical board configuration for a UMTS BBU5900
Typical Board Configuration for an LTE BBU5900

Main control board: One UMPTb, UMPTe, or UMPTg board is installed in slot 7
(recommended). If main control board backup is required, another main control board is
Baseband processing board: A maximum of six UBBPd, UBBPe, or UBBPg boards are
installed, in descending order of priority, in slots 4, 2, 0, 1, 3, and 5.
Figure 1-21 Typical board configuration for an LTE FDD BBU5900
Figure 1-22 Typical board configuration for an LTE NB-IoT BBU5900
Figure 1-23 Typical board configuration for an LTE FDD+NB-IoT BBU5900

BBU5900
Figure 1-24 Typical board configuration for an LTE FDD+TDD BBU5900
Typical Board Configuration for an NR BBU5900

Main control board: One UMPTg board is installed in slot 7 (recommended). If main control
board backup is required, another main control board is installed in slot 6.
Baseband processing board: A maximum of six UBBPg boards are installed, in descending
Figure 1-25 Typical board configuration for an NR BBU5900
1.4.2 Board Configuration for a Separate-MPT BBU5900

Typical Configuration for a Single BBU
The following table describes the typical board configuration for a single BBU.
 G&U indicates that GSM and UMTS use different main control boards. Other RAT combinations are
the same.
 LTE FDD is used as a typical board configuration example. The board configuration of LTE NB-IoT
is the same.
Table 1-13 Typical board configuration for a separate-MPT BBU5900

RAT Main Control Board Baseband Processing Board
G&U UMPT_G in slot 7 UBBP installed, in descending order of

UMPT_U in slot 6 priority, in slots 4, 2, 0, 1, 3, and 5.
(The UBBP_U is preferred to the UBBP_G.)
G&L UMPT_G in slot 7 UBBP installed, in descending order of

UMPT_L in slot 6 priority, in slots 4, 2, 0, 1, 3, and 5.
(The UBBP_L is preferred to the UBBP_G.)

BBU5900
RAT Main Control Board Baseband Processing Board
U&L UMPT_U in slot 7 UBBP installed, in descending order of

UMPT_L in slot 6 priority, in slots 4, 2, 0, 1, 3, and 5. (The
UBBP_L is preferred to the UBBP_U.)
G&M UMPT_G in slot 7 UBBP installed, in descending order of

UMPT_M in slot 6 priority, in slots 4, 2, 0, 1, 3, and 5.
(The UBBP_M is preferred to the UBBP_G.)
U&M UMPT_U in slot 7 UBBP installed, in descending order of
UMPT_M in slot 6 priority, in slots 4, 2, 0, 1, 3, and 5. (The
UBBP_M is preferred to the UBBP_U.)
L&N UMPT_L in slot 7 UBBP installed, in descending order of
UMPT_N in slot 6 priority, in slots 4, 2, 0, 1, 3, and 5. (The
UBBP_N is preferred to the UBBP_L.)
Figure 1-26 Typical board configuration for a G&U BBU5900
Figure 1-27 Typical board configuration for a G&L BBU5900 (same as G&M BBU5900)
Figure 1-28 Typical board configuration for a U&L BBU5900 (same as U&M BBU5900)

BBU5900
Figure 1-29 Typical board configuration for an L&N BBU5900
Typical Configuration for Two Interconnected BBUs

Two BBUs can be interconnected only through the UMPT+UMPT method using a dedicated
electrical cable. The following BBU interconnections are supported: 1 BBU3900+1 BBU5900,
1 BBU3910+1 BBU5900, and 1 BBU5900+1 BBU5900.
 G&U+L indicates that GSM and UMTS are deployed in BBU 0 and LTE is deployed in BBU 1.
Other RAT combinations are the same.
 When a BBU3900 or BBU3910 involved in BBU interconnection is configured with a GTMU board,
the BBU3900 or BBU3910 must serve as the root BBU.
 For details of BBU3900 and BBU3910 slot assignments, see BBU3900 Description and BBU3910
Description.
 LTE FDD is used as a typical board configuration example. The board configuration of LTE NB-IoT
is the same.
The following table lists the typical board configuration for 1 BBU3900/BBU3910+1
BBU5900.
Table 1-14 Typical board configuration for 1 BBU3900/BBU3910+1 BBU5900
RAT BBU 0 (BBU3900/BBU3910) BBU 1 (BBU5900)
G&U+L  Main control board: GTMU in slot  Main control board: UMPT_L in
6 and UMPT_U in slot 7 slot 7
 Baseband processing board:  Baseband processing board: A
− BBU3900: UBBP installed, in maximum of six UBBP_L boards
descending order of priority, in are installed, in descending order of
slots 3, 2, 0, 1, and 4 priority, in slots 4, 2, 0, 1, 3, and 5.
− BBU3910: UBBP installed, in
descending order of priority, in
slots 3, 2, 1, 0, and 4
G&U+  Main control board: GTMU in slot  Main control board: UMPT_M in
M 6 and UMPT_U in slot 7 slot 7
− BBU3900: UBBP installed, in maximum of six UBBP_M boards
descending order of priority, in are installed, in descending order of
slots 3, 2, 0, 1, and 4 priority, in slots 4, 2, 0, 1, 3, and 5.
slots 3, 2, 1, 0, and 4

BBU5900
RAT BBU 0 (BBU3900/BBU3910) BBU 1 (BBU5900)
L+N  Main control board: UMPT_L in  Main control board: UMPT_N in

slot 7 slot 7
− BBU3900: UBBP installed, in maximum of six UBBPg boards are
descending order of priority, in installed, in descending order of
slots 3, 0, 1, 2, 4, and 5 priority, in slots 4, 2, 0, 1, 3, and 5.
slots 3, 2, 1, 0, 4, and 5
Figure 1-30 Typical board configuration for G&U+L (same as G&U+M)

BBU5900
Figure 1-31 Typical board configuration for L+N
The following table lists the typical board configuration for 1 BBU5900+1 BBU5900.
Table 1-15 Typical board configuration for 1 BBU5900+1 BBU5900
RAT BBU 0 (BBU5900) BBU 1 (BBU5900)
G&U+L  Main control board: UMPT_G in  Main control board: UMPT_L in

slot 7 and UMPT_U in slot 6 slot 7
UBBP installed, in descending maximum of six UBBP_L boards
order of priority, in slots 4, 2, 0, 1, are installed, in descending order of
3, and 5 priority, in slots 4, 2, 0, 1, 3, and 5.
G&U+  Main control board: UMPT_G in  Main control board: UMPT_M in

M slot 7 and UMPT_U in slot 6 slot 7
UBBP installed, in descending maximum of six UBBP_M boards
order of priority, in slots 4, 2, 0, 1, are installed, in descending order of
3, and 5 priority, in slots 4, 2, 0, 1, 3, and 5.

BBU5900
Figure 1-32 Typical board configuration for G&U+L (same as G&U+M)
1.4.3 Board Configuration for a Co-MPT BBU5900

The typical board configuration for a co-MPT BBU5900 (NR not involved) is as follows:
 Main control board: One UMPT is installed in slot 7. When SRAN signaling expansion
or main control board backup is enabled, another UMPT is installed in slot 6.
 Baseband processing board: A maximum of six UBBP boards are installed, in descending
LTE FDD is used as a typical board configuration example. The board configuration of LTE NB-IoT is
the same.
Figure 1-33 Typical board configuration for a GU co-MPT BBU5900

BBU5900
Figure 1-34 Typical board configuration for a GL co-MPT BBU5900 (same as GM co-MPT
BBU5900 and GLM co-MPT BBU5900)
Figure 1-35 Typical board configuration for a UL co-MPT BBU5900 (same as UM co-MPT
BBU5900 and ULM co-MPT BBU5900)
Figure 1-36 Typical board configuration for a GUL co-MPT BBU5900 (same as GUM co-MPT
BBU5900 and GULM co-MPT BBU5900)
The typical board configuration for a co-MPT BBU5900 (NR involved) is as follows:
 Main control board: A maximum of two main control boards are installed, in descending
order of priority, in slots 7 and 6.
Baseband processing board: A maximum of six UBBP boards are installed, in descending
Figure 1-37 Typical board configuration for an LNR co-MPT BBU5900

BBU5900
Description 2 Technical Specifications
2 Technical Specifications
2.1 Baseband Specifications

2.2 Capacity Specifications
2.3 Signaling Specifications
2.4 CPRI Specifications
2.5 Transmission Port Specifications
2.6 Equipment Specifications
2.7 Traffic Model
2.1 Baseband Specifications

2.1.1 GSM Baseband Specifications
Table 2-1 GSM baseband specifications
Board Number of GSM TRXs
UBBPd1 24
UBBPd2 24
UBBPd3 24
UBBPd4 24
UBBPd5 36
UBBPd6 48

BBU5900
2.1.2 UMTS Baseband Specifications

Table 2-2 UMTS baseband specifications
Board Number Number Number Number Number Number
of Cells of UL of DL of of of
CEs CEs HSDPA HSDPA HSUPA
Codes UEs UEs
UBBPd1 6 384 512 6x15 288 288

UBBPd2 6 512 768 6x15 384 384
UBBPd3 6 384 512 6x15 288 288
UBBPd4 6 512 768 6x15 384 384
UBBPd5 6 768 768 6x15 512 512
UBBPd6 12 1024 1024 12x15 768 768

UBBPe1 6 384 512 6x15 288 288
UBBPe2 6 512 768 6x15 384 384
UBBPe3 12 768 768 12x15 512 512
UBBPe4 12 1024 1024 12x15 768 768
UBBPe5 12 1024 1024 12x15 768 768

UBBPe6 12 1024 1024 12x15 768 768
UBBPg2 12 1024 1024 12x15 768 768
UBBPg2a 12 1024 1024 12x15 768 768
UBBPg3 12 1024 1024 12x15 768 768
2.1.3 LTE Baseband Specifications

2.1.3.1 LTE FDD Baseband Specifications
Table 2-3 Number of LTE FDD cells per UBBP board

Board Number of Cells
UBBPd3 3x20 MHz 2T2R

UBBPd5  6x20 MHz 2T2R
 3x20 MHz 4T4R

BBU5900
UBBPe1 3x20 MHz 2T2R

UBBPe3  6x20 MHz 2T2R
 3x20 MHz 4T4R

 3x20 MHz 8T8R

 6x20 MHz 8T8R
UBBPex2 2x20 MHz 32T32R

UBBPg2  12x20 MHz 2T2R
 12x20 MHz 4T4R
 6x20 MHz 8T8R
UBBPg2a  12x20 MHz 2T2R

 12x20 MHz 4T4R
 6x20 MHz 8T8R
 3x20 MHz 32T32R
UBBPg3  24x20 MHz 2T2R

 24x20 MHz 4T4R
 12x20 MHz 8T8R
 6x20 MHz 32T32R
 Hybrid configurations of 1R and 2R cells are supported. In these configurations, the total number of
cells cannot exceed the maximum of 2R cells.
 Hybrid configurations of 1R and 4R cells or 2R and 4R cells are supported. In these configurations,
the total number of cells cannot exceed the maximum of 4R cells.
Table 2-4 Number of LTE FDD UEs per cell

Cell Bandwidth Maximum Number of UEs Maximum Number of
(MHz) in RRC Connected Mode per Uplink Synchronized UEs
Cell per Cell
1.4 168 168

3 360 360
5 600 600
10/15/20 1200 1200

BBU5900
Table 2-5 Number of LTE FDD UEs per main control board
Board Maximum Number Maximum Number of Uplink

of UEs in RRC Synchronized UEs
Connected Mode
UMPTb 10,800 10,800

UMPTe 14,400 14,400
UMPTg 28,800 28,800
Table 2-6 Number of LTE FDD UEs per UBBP board
Board Cell Maximum Number of Maximum Number of

Bandwidth UEs in RRC Uplink Synchronized UEs
(MHz) Connected Mode
UBBPd3/ 1.4 504 504

UBBPd4
3 1080 1080
5 1800 1800
10/15/20 3600 3600
UBBPd5/ 1.4 1008 1008

UBBPd6
3 2160 2160
5/10/15/20 3600 3600
UBBPe1/ 1.4 504 504

UBBPe2
3 1080 1080
5 1800 1800
10/15/20 3600 3600

UBBPe3/ 1.4 1008 1008
UBBPe4
3 2160 2160
5/10/15/20 3600 3600

UBBPe5 1.4 1512 1512
3 3240 3240
5/10/15/20 3600 3600
UBBPe6 1.4 2016 2016
3 4320 4320
5/10/15/20 4800 4800

BBU5900

Bandwidth UEs in RRC Uplink Synchronized UEs
(MHz) Connected Mode
UBBPex 5 1200 1200

2
10/15/20 2400 2400
UBBPg2 1.4 2016 2016

3 4320 4320
5/10/15/20 4800 4800
UBBPg2 1.4 2016 2016

a
3 4320 4320
5/10/15/20 4800 4800

UBBPg3 1.4 4032 4032
3 8640 8640
5/10/15/20 9600 9600
Table 2-7 LTE FDD throughput per cell
Cell Maximum DL Maximum UL Maximum UL Maximum UL

Bandwidth Throughput Throughput Throughput Throughput
(MHz) per Cell (2x2 per Cell (2x2 per Cell (1x4 per Cell (2x4
MIMO, MU-MIMO, SIMO, MU-MIMO,
64QAM) 64QAM) 64QAM) 64QAM)
(Mbit/s) (Mbit/s) (Mbit/s) (Mbit/s)
1.4 8.7 8.784 4.392 8.784

3 22 22.128 11.064 22.128
5 36 36.672 18.336 36.672

10 73 73.392 36.696 73.392
15 110 110.112 55.056 110.112
20 150 150.752 75.376 150.752
Table 2-8 LTE FDD throughput per UE
Cell Maximum DL Throughput per Maximum UL Throughput per

Bandwidth UE (2x2 MIMO, 64QAM) UE (1x2 SIMO/1x4 SIMO,
(MHz) (Mbit/s) 64QAM) (Mbit/s)
1.4 8.7 4.392

BBU5900
Cell Maximum DL Throughput per Maximum UL Throughput per

Bandwidth UE (2x2 MIMO, 64QAM) UE (1x2 SIMO/1x4 SIMO,
(MHz) (Mbit/s) 64QAM) (Mbit/s)
3 22 11.064
5 36 18.336
10 73 36.696
15 110 55.056
20 150 75.376
Table 2-9 LTE FDD throughput per UBBP board
Board Maximum Throughput (Mbit/s)
UBBPd3 DL: 450; UL: 225
UBBPd4 DL: 600; UL: 225
UBBPd5 DL: 600; UL: 300
UBBPd6 DL: 1200; UL: 600
UBBPe1 DL: 450; UL: 225
UBBPe2 DL: 600; UL: 300
UBBPe3 DL: 600; UL: 300

UBBPe4 DL: 1200; UL: 600
UBBPe5 DL: 1200; UL: 600
UBBPe6 DL: 2400; UL: 1200

UBBPex2 DL: 2400; UL: 600
UBBPg2 DL: 2400; UL: 1200
UBBPg2a DL: 2400; UL: 1200

UBBPg3 DL: 4800; UL: 2400
Table 2-10 Number of LTE FDD massive MIMO layers
Board Number of Layers
UBBPg2a TBD
UBBPg3 TBD

BBU5900
2.1.3.2 LTE NB-IoT Baseband Specifications

The following table describes cell specifications of a baseband processing board working in
LTE NB-IoT.
Table 2-11 Number of LTE NB-IoT cells per UBBP board

UBBPd3 6x200 kHz 2T2R

UBBPd3(3) 3x400 kHz 2T2R


UBBPd5(4) 3x200 kHz+3x400 kHz 2T2R
UBBPd6(5) 3x200 kHz+3x400 kHz 4T4R

UBBPe1 6x200 kHz 2T2R
6x400 kHz 2T2R
6x400 kHz 4T4R

UBBPe3(6) 6x400 kHz 4T4R
12x400 kHz 4T4R


UBBPg2 12x600 kHz 4T4R
UBBPg2a 12x600 kHz 4T4R

UBBPg3 24x600 kHz 4T4R

BBU5900
(3)
 : If a 400 kHz cell has been set up, the total number of cells cannot exceed three. If more than
three 200 kHz cells have been set up, no 400 kHz cell can be set up.
(4)
 :
 For 4T4R cells: If a 400 kHz 4T4R cell has been set up, the total number of 4T4R cells cannot
exceed three. If more than three 200 kHz 4T4R cells have been set up, no 400 kHz cell can be set up.
 For 2T4R cells: If more than six 2T4R cells have been set up, no 4T4R cell can be set up. If a 400
kHz 2T4R cell has been set up, the total number of cells cannot exceed six and the total number of
400 kHz cells cannot exceed three. If more than six 200 kHz 2T4R cells have been set up, no 400
kHz cell can be set up.
(5)
 : If a 400 kHz cell has been set up, the total number of cells cannot exceed six and the total number
of 400 kHz cells cannot exceed three. If more than six 200 kHz cells have been set up, no 400 kHz
cell can be set up.
(6)
 : If a 400 kHz cell or a 4T4R cell has been set up, the total number of cells cannot exceed six. If
more than six 2T4R cells have been set up, neither 400 kHz cells nor 4T4R cells can be set up.
(7)
 : If a 400 kHz cell has been set up, the total number of cells cannot exceed six. If more than six
200 kHz cells have been set up, no 400 kHz cell can be set up.
(8)
 : If a 400 kHz cell has been set up, the total number of cells cannot exceed twelve. If more than
twelve 200 kHz cells have been set up, no 400 kHz cell can be set up.
The following table lists the maximum number of UEs supported by an LTE NB-IoT cell.
Table 2-12 Number of LTE NB-IoT UEs per cell

Bandwidth UEs in RRC Connected UEs per Cell
Mode per Cell
UBBPd/UBB 200 kHz 600 50,000

Pe/UBBPg
(9)
: When Enhanced Multi-Carrier(NB-IoT) is enabled, a single 400 kHz NB-IoT cell supports a
maximum of 1200 UEs in RRC connected mode.
The following table lists the maximum number of UEs supported by a main control board
working in LTE NB-IoT.
Table 2-13 Number of LTE NB-IoT UEs per main control board
Board Maximum Number of Maximum Number of
UEs in RRC Connected UEs
Mode
UMPTb 10,800 1,150,000
UMPTe 14,400 5,200,000

UMPTg 28,800 10,400,000
The following table lists the maximum number of UEs supported by a baseband processing
board working in LTE NB-IoT.

BBU5900
Table 2-14 Number of LTE NB-IoT UEs per baseband processing board

UEs in RRC Connected UEs
Mode
UBBPd3 3600 (6x200 kHz 2T2R) 865,000

1800 (3x400 kHz 2T2R)
UBBPd4 3600 865,000
UBBPd5/UBBPd6 3600 1,270,000
UBBPe1/UBBPe2 3600 865,000

UBBPe3/UBBPe4 3600 1,385,000
UBBPe5 3600 1,385,000
UBBPe6 4800 1,385,000
UBBPg2 4800 2,312,000
UBBPg2a 4800 2,312,000

UBBPg3 9600 4,162,000
The following table provides the uplink and downlink LTE NB-IoT throughput per baseband
processing board.
Table 2-15 LTE NB-IoT throughput per baseband processing board

Board Maximum DL Maximum UL
Throughput per Throughput per
Baseband Processing Baseband Processing
Board (Mbit/s) Board (Mbit/s)
UBBPd3/UBBPd4 0.636 (6x200 kHz) 1.2

0.666 (3x400 kHz)
UBBPd5 0.954 (9x200 kHz 2T2R) 1.8 (9x200 kHz 2T2R)

0.666 (3x300 kHz 4T4R) 1.2 (3x400 kHz 4T4R)
UBBPd6 0.954 1.8

UBBPe1 0.636 (200 kHz) 1.2 (200 kHz)
1.332 (400 kHz) 2.4 (400 kHz)
UBBPe2 0.636 (200 kHz) 1.2

1.332 (400 kHz)
UBBPe3/UBBPe4 0.954 (9x200 kHz) 1.8 (200 kHz)
1.332 (6x400 kHz) 2.4 (400 kHz)
UBBPe5 1.272 (200 kHz) 2.4 (200 kHz)

BBU5900
Board Maximum DL Maximum UL

Baseband Processing Baseband Processing
Board (Mbit/s) Board (Mbit/s)
2.664 (400 kHz) 4.8 (400 kHz)
UBBPe6 1.59 (200 kHz) 3 (200 kHz)

2.664 (400 kHz) 4.8 (400 kHz)
UBBPg2 3.33 (400 kHz) 6 (400 kHz)
3.768 (600 kHz) 7.2 (600 kHz)
UBBPg2a 3.33 (400 kHz) 6 (400 kHz)

3.768 (600 kHz) 7.2 (600 kHz)
UBBPg3 5.994 (400 kHz) 10.8 (400 kHz)

7.536 (600 kHz) 14.4 (600 kHz)
2.1.3.3 LTE FDD+NB-IoT Baseband Specifications
Table 2-16 Number of LTE FDD+NB-IoT cells
Board Number of LTE FDD Cells Number of LTE NB-IoT Cells
UBBPd3 3x10 MHz 2T2R 3x200 kHz 2T2R

UBBPd4 3x10 MHz 4T4R 3x200 kHz 4T4R
UBBPd5 3x20 MHz 2T2R+3x10 MHz 2T2R 3x200 kHz 2T2R
3x10 MHz 4T4R 3x200 kHz 4T4R
UBBPd6 3x20 MHz 4T4R+3x10 MHz 4T4R 3x200 kHz 4T4R
UBBPe1 3x20 MHz 2T2R 3x200 kHz 2T2R



BBU5900
Board Number of LTE FDD Cells Number of LTE NB-IoT Cells


UBBPg2 12x20 MHz 4T4R 3x600 kHz 4T4R

a
 If a UBBPd is configured with LTE NB-IoT cells, the maximum board throughput will decrease and
the proportion of the maximum throughput to the total LTE cell bandwidth will decrease.
 If a UBBPd/UBBPe is configured, one LTE FDD cell can be associated with one in-band LTE
NB-IoT cell. (If a UBBPd is configured and Standard Ratio is set to FDD_ENHANCE, the LTE
FDD cells cannot be associated with in-band LTE NB-IoT cells.)
Table 2-17 Number of LTE FDD+NB-IoT UEs per cell
Cell Maximum Number of UEs Maximum Number of UEs per Cell

Bandwidt in RRC Connected Mode per
h Cell
200 kHz 600 50,000
Table 2-18 Number of LTE FDD+NB-IoT UEs per main control board
Board Maximum Number of Maximum Number of LTE
LTE NB-IoT UEs in FDD+NB-IoT UEs
RRC Connected Mode
UMPTb 10,800 7500+345,000
UMPTe 14,400 11,500+1,040,000
UMPTg 28,800 23,000+2,080,000

BBU5900
Table 2-19 Number of LTE FDD+NB-IoT UEs per UBBP board
Board Maximum Number of Maximum Number of LTE

LTE NB-IoT UEs in FDD+NB-IoT UEs
RRC Connected Mode
UBBPd3/UB 1800 2500+250,000

BPd4
UBBPd5/UB 1800 2500+380,000

BPd6
UBBPe1/UB 1800 2500+250,000

BPe2
UBBPe3/UB 1800 2500+410,000
BPe4
UBBPe5 1800 2500+410,000
UBBPe6 1800 3350+410,000

UBBPg2 4800 3350+693,000
UBBPg2a 4800 3350+693,000

UBBPg3 9600 6720+1,248,000
The maximum number of UEs supported by a board is affected by the traffic model. The maximum
number of UEs in the preceding table is based on the LTE NB-IoT traffic model. For details of the LTE
NB-IoT traffic model, see 2.7 Traffic Model.
Table 2-20 LTE FDD+NB-IoT throughput per UBBP board
Board Maximum DL Throughput per Maximum UL Throughput per

Baseband Processing Board Baseband Processing Board
(Mbit/s) (Mbit/s)
UBBPd3 225 150
UBBPd4 300 150

UBBPd5 450 225
UBBPd6 900 450

UBBPe1 450 225
UBBPe2 600 300
UBBPe3 600 300
UBBPe4 1200 600
UBBPe5 1200 600
UBBPe6 2400 1200

BBU5900
Board Maximum DL Throughput per Maximum UL Throughput per

Baseband Processing Board Baseband Processing Board
(Mbit/s) (Mbit/s)
UBBPg2 2400 1200

UBBPg2a 2400 1200
UBBPg3 2400 1200
2.1.3.4 LTE TDD+NB-IoT Baseband Specifications
Table 2-21 Maximum number of LTE TDD or NB-IoT cells

LTE TDD Cells LTE NB-IoT Cells
UBBPg2a 12x20 MHz 4T4R 3x600 kHz 4T4R
The preceding specifications are supported only when uplink-downlink subframe configuration 1 or 2 is
used for TDD.
Table 2-22 Number of LTE TDD+NB-IoT UEs

LTE NB-IoT UEs in RRC LTE TDD+NB-IoT UEs
Connected Mode
UBBPe4 3600 2500+410,000

UBBPe6 3600 3350+625,000
UBBPg2 3600 3350+693,000

UBBPg2a 3600 3350+693,000
UBBPg3 3600 6720+1,248,000
Table 2-23 LTE TDD+NB-IoT throughput
UBBPe4 DL: 1200 x downlink subframe ratio

BBU5900

UL:
 450 x uplink subframe ratio (subframe
configuration 1)
configuration 2)
UBBPe6 DL: 2400 x downlink subframe ratio

UL:
configuration 1)
configuration 2)
UBBPg2 DL: 2400 x downlink subframe ratio
UL:
configuration 1)
configuration 2)
UBBPg2a DL: 2400 x downlink subframe ratio

UL:
configuration 1)
configuration 2)
UBBPg3 DL: 4800 x downlink subframe ratio
UL:
configuration 1)
configuration 2)
2.1.4 NR Baseband Specifications

Table 2-24 NR cell and bandwidth specifications
Board Frequen Number of Cells Version

cy Band
Type of
a Cell
UBBPf NR TDD NR TDD sub-6 GHz: 6x40/60/80/100 MHz 8T8R SRAN15.0 and
w1 sub-6 later
GHz
NR TDD sub-6 GHz: 3x40/60/80/100 MHz SRAN15.0 and

BBU5900

cy Band
Type of
a Cell
32T32R later
NR TDD sub-6 GHz: 3x40/60/80/100 MHz SRAN15.0 and

64T64R later
100 MHz is
supported from
SRAN13.1
onwards.
NR TDD NR TDD sub-6 GHz+SUL: 3x40/60/80/100 MHz SRAN15.0 only
sub-6 32T32R+3x20 MHz 2R
GHz+SU
L NR TDD sub-6 GHz+SUL: 3x40/60/80/100 MHz SRAN15.0 only
32T32R+3x20 MHz 4R
NR TDD sub-6 GHz+SUL: 3x40/60/80/100 MHz SRAN13.1 and

64T64R+3x20 MHz 2R SRAN15.0
40/60/80 MHz
is supported
from
SRAN15.0
onwards.
NR TDD sub-6 GHz+SUL: 3x40/60/80/100 MHz SRAN13.1 and

64T64R+3x20 MHz 4R SRAN15.0
40/60/80 MHz
is supported
from
SRAN15.0
onwards.
NR TDD sub-6 GHz+SUL: 3x40/60/80/100 MHz SRAN15.1

32T32R+3x15/20 MHz 4R
NR TDD sub-6 GHz+SUL: 3x40/60/80/100 MHz SRAN15.1

64T64R+3x15/20 MHz 4R
NR TDD NR TDD mmWave: 12x100 MHz 4T4R SRAN15.0 only
mmWav
e NR TDD mmWave: 12x200 MHz 4T4R SRAN15.0 only
UBBP NR FDD NR FDD sub-3 GHz: 9x10/15/20 MHz SRAN15.1

g2 sub-3 2T2R/4T4R
GHz
g2a sub-3 2T2R/4T4R
GHz
NR TDD NR TDD sub-6 GHz: SRAN15.1

sub-6 3x20/30/40/50/60/70/80/90/100 MHz 8T8R

BBU5900

cy Band
Type of
a Cell
GHz NR TDD sub-6 GHz: SRAN15.1
3x20/30/40/50/60/70/80/90/100 MHz 32T32R
NR TDD sub-6 GHz: SRAN15.1

3x20/30/40/50/60/70/80/90/100 MHz 64T64R
NR TDD NR TDD sub-6 GHz+SUL: SRAN15.1
sub-6 3x20/30/40/50/60/70/80/90/100 MHz
GHz+SU 32T32R+3x15/20 MHz 4R
L
NR TDD sub-6 GHz+SUL: SRAN15.1
3x20/30/40/50/60/70/80/90/100 MHz
64T64R+3x15/20 MHz 4R

3x20/30/40/50/60/70/80/90/100 MHz
8T8R+3x15/20 MHz 4R

g3 sub-3 2T2R/4T4R
GHz
NR TDD NR TDD sub-6 GHz: SRAN15.1

sub-6 6x20/30/40/50/60/70/80/90/100 MHz 8T8R
GHz
3x20/30/40/50/60/70/80/90/100 MHz 32T32R
3x20/30/40/50/60/70/80/90/100 MHz 64T64R
NR TDD NR TDD sub-6 GHz+SUL: SRAN15.1

sub-6 3x20/30/40/50/60/70/80/90/100 MHz
GHz+SU 32T32R+3x15/20 MHz 4R
L
3x20/30/40/50/60/70/80/90/100 MHz
64T64R+3x15/20 MHz 4R
NR TDD sub-6 GHz+SUL: 6x100 MHz SRAN15.1
8T8R+6x15/20 MHz 4R
NR TDD NR TDD sub-6 GHz+NR FDD sub-3 GHz: 3x100 SRAN15.1
sub-6 MHz 32T32R+6x10/15/20 MHz 4T4R/2T2R
GHz+NR
FDD NR TDD sub-6 GHz+NR FDD sub-3 GHz: 3x100 SRAN15.1
sub-3 MHz 64T64R+6x10/15/20 MHz 4T4R/2T2R
GHz
NR TDD NR TDD mmWave: 12x100/200 MHz 2T2R SRAN15.1
mmWav
e NR TDD mmWave: 12x100/200 MHz 4T4R SRAN15.1

BBU5900
 Sub-3 GHz indicates frequency bands below 3 GHz.

 Sub-6 GHz indicates frequency bands ranging from 3 GHz to 6 GHz. 3GPP defines the n77, n78,
and n79 bands as sub-6 GHz.
 mmWave indicates millimeter wave bands. 3GPP defines the n257, n258, and n260 bands as
mmWave.
 SUL is used to implement the UL and DL Decoupling feature.
 For detailed spectrum, see 4.1 Appendix 1: NR Spectrum List.
Table 2-25 Number of UEs per baseband processing board
Board Maximum Number of UEs in Maximum Number of Uplink

RRC Connected Mode Synchronized UEs
UBBPfw1 1200 1200

UBBPg2 600 600
UBBPg2a 600 600
UBBPg3 1200 1200
Table 2-26 Number of UEs supported by a cell
Frequency Band Type of Maximum Number of Maximum Number of

a Cell UEs in RRC Connected Uplink Synchronized
Mode per Cell UEs per Cell
NR FDD sub-3 GHz 400 400
NR TDD sub-6 GHz 400 400
Table 2-27 Number of UEs supported by a sector
Frequency Band Type of Maximum Number of Maximum Number of

a Cell UEs in RRC Connected Uplink Synchronized
Mode per Sector UEs per Sector
NR TDD mmWave 400 400
A mmWave sector consists of multiple cells. In SRAN15.0 or SRAN15.1, a single sector supports a
maximum of four cells.

BBU5900
Table 2-28 Baseband processing board throughput
Board Configuration Maximum DL Maximum UL

Throughput Throughput
(DL:UL = 4:1) (DL:UL = 4:1)
(Gbit/s) (Gbit/s)
UBBPfw1 NR TDD sub-6 GHz: 6x100 7.5 0.9

MHz 8T8R
NR TDD sub-6 GHz: 3x100 7.5 0.9

MHz 32T32R
NR TDD sub-6 GHz: 3x100 7.5 0.9

MHz 64T64R
UBBPg2a NR TDD sub-6 GHz: 3x100 3.75 0.45
MHz 8T8R
NR TDD sub-6 GHz: 3x100 5 0.6

MHz 32T32R
NR TDD sub-6 GHz: 3x100 5 0.6
MHz 64T64R
UBBPg3 NR TDD sub-6 GHz: 6x100 7.5 0.9
MHz 8T8R
NR TDD sub-6 GHz: 3x100 7.5 0.9

MHz 32T32R
NR TDD sub-6 GHz: 3x100 7.5 0.9

MHz 64T64R
NR TDD mmWave: 3x800 14.5 2.175

MHz 2T2R
NR TDD mmWave: 3x800 14.5 2.9

MHz 4T4R
Table 2-29 Throughput per cell served by a baseband processing board (NSA)
Cell Configuration Maximum DL Maximum UL Maximum UL
Throughput per Throughput per Throughput per
Cell (DL:UL = 4:1) Cell (DL:UL = Cell (DL:UL =
(Gbit/s) 4:1) (Gbit/s) 4:1) (Gbit/s)
(256QAM) (64QAM)
NR TDD sub-6 GHz: 0.278 73 55

20 MHz 8T8R
NR TDD sub-6 GHz: 0.426 116 86

30 MHz 8T8R
NR TDD sub-6 GHz: 0.587 165 122

40 MHz 8T8R

BBU5900

(256QAM) (64QAM)
NR TDD sub-6 GHz: 0.727 203 154

50 MHz 8T8R
NR TDD sub-6 GHz: 0.913 245 180
60 MHz 8T8R
NR TDD sub-6 GHz: 1.05 283 212

70 MHz 8T8R
NR TDD sub-6 GHz: 1.21 339 253
80 MHz 8T8R
NR TDD sub-6 GHz: 1.36 380 285

90 MHz 8T8R
NR TDD sub-6 GHz: 1.5 428 321
100 MHz 8T8R
NR TDD sub-6 GHz: 0.714 73 55

20 MHz 32T32R
NR TDD sub-6 GHz: 1.095 116 86

30 MHz 32T32R
NR TDD sub-6 GHz: 1.699 165 122

40 MHz 32T32R
NR TDD sub-6 GHz: 2.169 203 154

50 MHz 32T32R
NR TDD sub-6 GHz: 2.603 245 180

60 MHz 32T32R
NR TDD sub-6 GHz: 3.08 283 212

70 MHz 32T32R
NR TDD sub-6 GHz: 3.49 339 253

80 MHz 32T32R
NR TDD sub-6 GHz: 4.01 380 285
90 MHz 32T32R
NR TDD sub-6 GHz: 4.4 428 321
100 MHz 32T32R
NR TDD sub-6 GHz: 0.803 73 55

20 MHz 64T64R
NR TDD sub-6 GHz: 1.230 116 86

30 MHz 64T64R
NR TDD sub-6 GHz: 1.913 165 122
40 MHz 64T64R

BBU5900

(256QAM) (64QAM)
NR TDD sub-6 GHz: 2.440 203 154

50 MHz 64T64R
NR TDD sub-6 GHz: 2.933 245 180
60 MHz 64T64R
NR TDD sub-6 GHz: 3.47 283 212

70 MHz 64T64R
NR TDD sub-6 GHz: 3.93 339 253
80 MHz 64T64R
NR TDD sub-6 GHz: 4.52 380 285

90 MHz 64T64R
NR TDD sub-6 GHz: 5.0 428 321
100 MHz 64T64R
Table 2-30 Throughput per cell served by a baseband processing board (SA)

(256QAM) (64QAM)
NR TDD sub-6 GHz: 0.263 73 55

20 MHz 8T8R
NR TDD sub-6 GHz: 0.414 116 86
30 MHz 8T8R
NR TDD sub-6 GHz: 0.573 165 122

40 MHz 8T8R
NR TDD sub-6 GHz: 0.713 203 154
50 MHz 8T8R
NR TDD sub-6 GHz: 0.891 245 180
60 MHz 8T8R
NR TDD sub-6 GHz: 1.03 283 212

70 MHz 8T8R
NR TDD sub-6 GHz: 1.19 339 253
80 MHz 8T8R
NR TDD sub-6 GHz: 1.34 380 285

90 MHz 8T8R

BBU5900

(256QAM) (64QAM)
NR TDD sub-6 GHz: 1.5 428 321

100 MHz 8T8R
NR TDD sub-6 GHz: 0.648 73 55
20 MHz 32T32R
NR TDD sub-6 GHz: 1.038 116 86

30 MHz 32T32R
NR TDD sub-6 GHz: 1.619 165 122
40 MHz 32T32R
NR TDD sub-6 GHz: 2.077 203 154

50 MHz 32T32R
NR TDD sub-6 GHz: 2.557 245 180
60 MHz 32T32R
NR TDD sub-6 GHz: 2.99 283 212

70 MHz 32T32R
NR TDD sub-6 GHz: 3.45 339 253

80 MHz 32T32R
NR TDD sub-6 GHz: 3.90 380 285

90 MHz 32T32R
NR TDD sub-6 GHz: 4.4 428 321

100 MHz 32T32R
NR TDD sub-6 GHz: 0.728 73 55

20 MHz 64T64R
NR TDD sub-6 GHz: 1.166 116 86

30 MHz 64T64R
NR TDD sub-6 GHz: 1.823 165 122

40 MHz 64T64R
NR TDD sub-6 GHz: 2.336 203 154
50 MHz 64T64R
NR TDD sub-6 GHz: 2.882 245 180
60 MHz 64T64R
NR TDD sub-6 GHz: 3.37 283 212

70 MHz 64T64R
NR TDD sub-6 GHz: 3.88 339 253

80 MHz 64T64R
NR TDD sub-6 GHz: 4.39 380 285
90 MHz 64T64R

BBU5900

(256QAM) (64QAM)
NR TDD sub-6 GHz: 4.9 428 321

100 MHz 64T64R
Table 2-31 Throughput per sector served by a baseband processing board

Board Configuration Maximum DL Maximum UL
Sector (DL:UL = Sector (DL:UL =
4:1) (Gbit/s) 4:1) (Gbit/s)
UBBPg3 NR TDD mmWave: 100 MHz 1.8125 0.3625

4T4R
NR TDD mmWave: 200 MHz 3.625 0.725

4T4R
NR TDD mmWave: 4x200 14.5 2.9

MHz 4T4R
NR TDD mmWave: 100 MHz 90.625 0.18125
2T2R
NR TDD mmWave: 200 MHz 181.25 0.3625

2T2R
NR TDD mmWave: 4x200 725 1.45

MHz 2T2R
Table 2-32 Number of UEs in a cell served by a main control board
Board Maximum Number Maximum Number of Uplink

of UEs in RRC Synchronized UEs
Connected Mode
UMPTe 3600 3600
UMPTg 7200 14,400
Table 2-33 Number of NR massive MIMO layers

UBBPfw1 DL: 24; UL: 12

BBU5900
UBBPg2a DL: 16; UL: 8
UBBPg3 DL: 24; UL: 12
2.1.5 Co-BBP Baseband Specifications

Table 2-34 GU co-BBP baseband specifications
Board GSM GSM Num Numb Numb Numb Numb Numb

TRX TRX ber er of er of er of er of er of
(2R) (4R) of UMTS UMTS UMTS UMTS UMTS
UM UL DL HSDP HSDP HSUP
TS CEs CEs A A UEs A UEs
Cells Codes
UBBPd1 12 6 6 192 256 6x15 144 144
UBBPd2 12 6 6 256 384 6x15 192 192
UBBPd3 12 6 6 192 256 6x15 144 144
UBBPd4 12 6 6 256 384 6x15 192 192
UBBPd5 18 6 6 384 512 6x15 288 288
UBBPd6 24 6 6 512 768 6x15 384 384
In GL, UL, and GUL co-BBP scenarios, the UBBP board supports hybrid configurations of 1R and 4R
LTE cells or hybrid configurations of 2R and 4R LTE cells.
Table 2-35 GL co-BBP baseband specifications

Board GS GS Number of LTE Maximum Number Maximum
M M FDD Cells of LTE FDD UEs in LTE FDD
TR TR RRC Connected Throughput
X X Mode (Mbit/s)
(2R (4R
) )
UBBPd3 12 6 3x10 MHz 2T2R  1.4 MHz bandwidth: DL: 225

504 UL: 112.5
 3 MHz bandwidth:
1080
1800
3600

BBU5900
Board GS GS Number of LTE Maximum Number Maximum

M M FDD Cells of LTE FDD UEs in LTE FDD
TR TR RRC Connected Throughput
X X Mode (Mbit/s)
(2R (4R
) )

504 UL: 112.5
1080
1800
3600

504 UL: 225
1080
1800
 10/15/20 MHz
bandwidth: 3600

504 UL: 225
1080
1800
 10/15/20 MHz
bandwidth: 3600
Table 2-36 UL co-BBP baseband specifications

Board Nu Nu Nu Nu Nu Nu Numb Maximum Maxi
mb mb mb mb mb mb er of Number of LTE mum
er er er er er er LTE FDD UEs in LTE
of of of of of of FDD RRC Connected FDD
UM UM UM UM UM UM Cells Mode Thro
TS TS TS TS TS TS ughp
Cel UL DL HS HS HS ut
ls CEs CEs DP DP UP (Mbit
A A A /s)
Co UE UE
des s s
UBBP 6 512 768 6x1 384 384 3x20  1.4 MHz DL:
d6 5 MHz bandwidth: 504 600

BBU5900

A A A /s)
Co UE UE
des s s
4T4R  3 MHz UL:
bandwidth: 225
1080
 5 MHz
bandwidth:
1800
 10/15/20 MHz
bandwidth:
3600
UBBP 6 384 512 6x1 288 288 3x20  1.4 MHz DL:
e3 5 MHz bandwidth: 504 450
2T2R  3 MHz UL:
bandwidth: 225
1080
 5 MHz
bandwidth:
1800
 10/15/20 MHz
bandwidth:
3600
UBBP 6 512 768 6x1 384 384 3x20  1.4 MHz DL:
e4 5 MHz bandwidth: 504 600
4T4R  3 MHz UL:
bandwidth: 225
1080
 5 MHz
bandwidth:
1800
 10/15/20 MHz
bandwidth:
3600
UBBP 6 512 768 6x1 384 384 6x20  1.4 MHz DL:
e5 5 MHz bandwidth: 600
2T2R 1008 UL:
 3 MHz 300
bandwidth:
2160

BBU5900

A A A /s)
Co UE UE
des s s
 5/10/15/20
MHz
bandwidth:
3600
UBBP 6 512 768 6x1 384 384  6x2  1.4 MHz DL:
e6 5 0 bandwidth: 1200
MH 1008 UL:
z  3 MHz 600
4T4 bandwidth:
R 2160
 3x2  5/10/15/20
0 MHz
MH bandwidth:
z 3600
8T8
R
UBBP 3 256 384 3x1 192 192  9x2  1.4 MHz DL:
e6 5 0 bandwidth: 1200
MH 1512 UL:
z  3 MHz 600
4T4 bandwidth:
R 3240
 3x2  5/10/15/20
0 MHz
MH bandwidth:
z 3600
8T8
R
UBBP 6 512 768 6x1 384 384  6x2  1.4 MHz DL:
g2 5 0 bandwidth: 1200
MH 1008 UL:
z  3 MHz 600
4T4 bandwidth:
R 2160
 3x2  5/10/15/20
0 MHz
MH bandwidth:
z 3600
8T8
R

BBU5900

A A A /s)
Co UE UE
des s s
(onl
y
10/1
5/20
MH
z)
3 256 384 3x1 192 192  9x2  1.4 MHz DL:

5 0 bandwidth: 1200
MH 1512 UL:
z  3 MHz 600
4T4 bandwidth:
R 3240
 3x2  5/10/15/20
0 MHz
MH bandwidth:
z 3600
8T8
R
(onl
y
10/1
5/20
MH
z)
UBBP 6 512 768 6x1 384 384  6x2  1.4 MHz DL:
g2a 5 0 bandwidth: 1200
MH 1008 UL:
z  3 MHz 600
4T4 bandwidth:
R 2160
 3x2  5/10/15/20
0 MHz
MH bandwidth:
z 3600
8T8
R
(onl
y
10/1
5/20
MH

BBU5900

A A A /s)
Co UE UE
des s s
z)
3 256 384 3x1 192 192  9x2  1.4 MHz DL:

5 0 bandwidth: 1200
MH 1512 UL:
z  3 MHz 600
4T4 bandwidth:
R 3240
 3x2  5/10/15/20
0 MHz
MH bandwidth:
z 3600
8T8
R
(onl
y
10/1
5/20
MH
z)
UBBP 12 102 102 12x 768 768  12x  1.4 MHz DL:
g3 4 4 15 20 bandwidth: 2400
MH 2016 UL:
z  3 MHz 1200
4T4 bandwidth:
R 4320
 6x2  5/10/15/20
0 MHz
MH bandwidth:
z 4800
8T8
R
(onl
y
10/1
5/20
MH
z)

BBU5900
Table 2-37 UM co-BBP baseband specifications
Boar Nu Nu Nu Nu Nu Nu Maxi Maxi Ma Max Maxi

d mb mb mb mb mb mb mum mum xim imu mum
er er er er er er Num Num um m LTE
of of of of of of ber of ber LT Nu NB-Io
UM UM UM UM UM UM LTE of E mbe T
TS TS TS TS TS TS NB-Io LTE NB r of Thro
Cel UL DL HS HS HS T NB-I -Io LTE ughp
ls CEs CEs DP DP UP Cells oT T NB-I ut
A A A UEs Sig oT (Mbit
Co UE UE nali UEs /s)
des s s ng in
Spe RRC
cifi Con
cati nect
ons ed
Mod
e
UBB 6 512 768 6x1 384 384 3x200 520,0 243, 1800 DL:
Pd6 5 kHz 00 000 0.318
4T4R UL:
0.6
UBB 6 384 512 6x1 288 288 3x200 635,0 297, 1800 DL:
Pe3 5 kHz 00 000 0.318
2T2R UL:
SRAN 0.6
13.1
and
later
versio
ns:
3x400
kHz
2T4R
UBB 6 512 768 6x1 384 384 3x200 635,0 297, 1800 DL:
Pe4 5 kHz 00 000 0.318
4T4R UL:
SRAN 0.6
13.1
and
later
versio
ns:
3x400
kHz
4T4R
UBB 6 512 768 6x1 384 384 3x200 635,0 297, 1800 DL:
Pe5 5 kHz 00 000 0.318
4T4R UL:

BBU5900

des s s ng in
Spe RRC
cifi Con
cati nect
ons ed
Mod
e
SRAN 0.6
13.1
and
later
versio
ns:
3x400
kHz
4T4R
UBB 6 512 768 6x1 384 384 6x200 983,0 459, 3600 DL:
Pe6 5 kHz 00 000 0.636
4T4R UL:
SRAN 1.212
13.1
and
later
versio
ns:
6x400
kHz
4T4R
UBB 6 512 768 6x1 384 384 6x600 1,156, 540, 3600 DL:
Pg2 5 kHz 000 000 1.884
4T4R UL:
3.6
UBB 6 512 768 6x1 384 384 6x600 1,156, 540, 3600 DL:
Pg2a 5 kHz 000 000 1.884
4T4R UL:
3.6
UBB 12 102 102 12x 768 768 12x60 2,081, 972, 4800 DL:
Pg3 4 4 15 0 kHz 000 000 3.768
4T4R
UL:

BBU5900

des s s ng in
Spe RRC
cifi Con
cati nect
ons ed
Mod
e
7.2
Table 2-38 UN co-BBP baseband specifications
Boar Nu Num Num Num Num Num Maxim Maxi Maxim

d mb ber ber ber ber ber um mum um NR
er of of of of of Numb Numb FDD
of UMT UMT UMT UMT UMT er of er of Throu
UM S UL S DL S S S NR NR ghput
TS CEs CEs HSD HSD HSU FDD FDD (Mbit/s
Cell PA PA PA Cells UEs )
s Code UEs UEs in
s RRC
Conne
cted
Mode
UBBP 6 512 768 6x15 384 384 3x20 300 TBD

g2 MHz
4T4R
UBBP 6 512 768 6x15 384 384 3x20 300 TBD
g2a MHz
4T4R
UBBP 12 1024 1024 12x15 768 768 9x20 600 TBD
g3 MHz
4T4R

BBU5900
Table 2-39 LN co-BBP baseband specifications
Bo Maximum Maximum Max Maximum Number of Maxi Maxi

ar Number of Number of imu NR Cells mum mum
d LTE Cells LTE UEs m Numb NR
in RRC LTE er of Thro
Connected Thro NR ughp
Mode ugh UEs in ut
put RRC (Mbit
(Mb Conne /s)
it/s) cted
Mode
UB  6x20  1.4 MHz DL: NR FDD sub-3 GHz: 300 TBD

BP MHz bandwidt 1200 3x20 MHz 4T4R
g2 4T4R h: 1008 UL:
 3x20  3 MHz 600
MHz bandwidt
8T8R h: 2160
(only  5/10/15/
10/15/20 20 MHz
MHz) bandwidt
h: 3600
UB  6x20  1.4 MHz DL: NR FDD sub-3 GHz: 300 TBD

g2 4T4R h: 1008 UL:
a  3x20  3 MHz 600
MHz bandwidt
8T8R h: 2160
(only  5/10/15/
10/15/20 20 MHz
MHz) bandwidt
h: 3600
UB  12x20  1.4 MHz DL:  NR FDD sub-3 GHz: 600 TBD
g3 4T4R h: 2016 UL:
 6x20  3 MHz 1200
MHz bandwidt
8T8R h: 4320
(only  5/10/15/
10/15/20 20 MHz
MHz) bandwidt
h: 4800

BBU5900
Table 2-40 TN co-BBP baseband specifications
Bo Maximu Maxi Maximu Maximum Number of Maximu Maximu

ard m mu m LTE NR Cells m m NR
Number m Throug Number Through
of LTE Num hput of NR put
Cells ber (DL:UL UEs in (DL:UL
of = 3:1) RRC = 4:1)
LTE (Mbit/s) Connect (Mbit/s)
UEs ed
in Mode
RRC
Con
nect
ed
Mod
e
UB 12x5/10/1 4800 DL: 1800 NR TDD sub-6 600 DL: 3750

BP 5/20 MHz UL: 240 GHz+SUL: 3x100 MHz UL: 450
g3 4T4R 8T8R+3x20 MHz 4R
6x10/15/2 3600
0 MHz
8T8R
3x20 3600 DL: 1013 NR TDD sub-6 600 DL: 3000

MHz UL: 140 GHz+SUL: 3x60 MHz UL: 360
32T32R/6 32T32R/64T64R+3x20
4T64R MHz 4R
Table 2-41 Number of TN massive MIMO layers
Board Number of LTE TDD Number of NR Layers

Layers
UBBPg3 TBD TBD
Table 2-42 ULM co-BBP specifications (UBBPd6/UBBPe3/UBBPe4)
Board UBBPd6 UBBPe3 UBBPe4
Number of 6 (2T2R/2T4R)  6 (2T2R) 6 (2T2R/2T4R)

UMTS Cells  3 (2T4R)
Number of 512 384 512

UMTS UL CEs
Number of 768 512 768

UMTS DL CEs
Number of 6x15 6x15 6x15

BBU5900
UMTS HSDPA
Codes
Number of 384 288 384

UMTS HSDPA
UEs
Number of 384 288 384

UMTS HSUPA
UEs
Number of LTE 3x10 MHz 4T4R 3x10 MHz 2T2R 3x10 MHz 4T4R
FDD Cells
Maximum  1.4 MHz  1.4 MHz  1.4 MHz

Number of LTE bandwidth: 504 bandwidth: 504 bandwidth: 504
FDD UEs in RRC  3 MHz  3 MHz  3 MHz
Connected Mode bandwidth: 1080 bandwidth: 1080 bandwidth: 1080
 5 MHz  5 MHz  5 MHz
bandwidth: 1800 bandwidth: 1800 bandwidth: 1800
 10 MHz  10 MHz  10 MHz
bandwidth: 2520 bandwidth: 2520 bandwidth: 2520
Maximum LTE DL: 300 DL: 225 DL: 300

FDD Throughput UL: 112.5 UL: 112.5 UL: 112.5
(Mbit/s)
Maximum 3x200 kHz 4T4R 3x200 kHz 2T2R 3x200 kHz 4T4R
Number of LTE
NB-IoT Cells
Maximum 635000 635000 635000

Number of LTE
NB-IoT UEs
Maximum LTE 297000 297000 297000

NB-IoT Signaling
Specifications
Maximum 1800 which can be 1800 which can be 1800 which can be
Number of LTE shared with LTE shared with LTE shared with LTE
NB-IoT UEs in FDD; ≤ 3600 in total FDD; ≤ 3600 in FDD; ≤ 3600 in total
RRC Connected total
Mode
Maximum LTE DL: 0.318 DL: 0.318 DL: 0.318

NB-IoT UL: 0.6 UL: 0.6 UL: 0.6
Throughput
(Mbit/s)
Table 2-43 ULM co-BBP specifications (UBBPe5)
Board UBBPe5

BBU5900
Number of UMTS Cells 6 (2T2R/2T4R)
Number of UMTS UL CEs 512
Number of UMTS DL CEs 768
Number of UMTS HSDPA Codes 6x15
Number of UMTS HSDPA UEs 384
Number of UMTS HSUPA UEs 384
Number of LTE FDD Cells 6x20 MHz 2T2R
Maximum Number of LTE FDD UEs  1.4 MHz bandwidth: 1008

in RRC Connected Mode  3 MHz bandwidth: 2160
 5/10/15/20 MHz bandwidth: 2520
Maximum LTE FDD Throughput DL: 600

(Mbit/s) UL: 300
Maximum Number of LTE NB-IoT 3x400 kHz 2T2R
Cells
Maximum Number of LTE NB-IoT 635,000

UEs
Maximum LTE NB-IoT Signaling 297,000

Specifications
Maximum Number of LTE NB-IoT 1800 which can be shared with LTE FDD; ≤
UEs in RRC Connected Mode 3600 in total
Maximum LTE NB-IoT Throughput DL: 0.318

(Mbit/s) UL: 0.6
Table 2-44 ULM co-BBP specifications (UBBPe6)
Board UBBPe6
Number of UMTS Cells 6 (2T2R/2T4R)
Number of UMTS UL CEs 512
Number of UMTS DL CEs 768
Number of UMTS HSDPA Codes 6x15
Number of UMTS HSDPA UEs 384
Number of UMTS HSUPA UEs 384
Number of LTE FDD Cells 6x20 MHz 4T4R
Maximum Number of LTE FDD UEs  1.4 MHz bandwidth: 1008

in RRC Connected Mode

BBU5900
 3 MHz bandwidth: 2160

 5/10/15/20 MHz bandwidth: 2520
Maximum LTE FDD Throughput DL: 1200

(Mbit/s) UL: 600
Maximum Number of LTE NB-IoT 3x400 kHz 4T4R

Cells
Maximum Number of LTE NB-IoT 635,000

UEs
Maximum LTE NB-IoT Signaling 297,000

Specifications
Maximum Number of LTE NB-IoT 1800 which can be shared with LTE FDD; ≤
UEs in RRC Connected Mode 3600 in total
Maximum LTE NB-IoT Throughput DL: 0.318

(Mbit/s) UL: 0.6
Table 2-45 ULM co-BBP baseband specifications (UBBPg)
Board UBBPg2/UBBg2a UBBPg3
Number of 6 3 12
UMTS Cells
Number of 512 256 1024

UMTS UL CEs
Number of 768 384 1024

UMTS DL CEs
Number of 6x15 3x15 12x15

UMTS HSDPA
Codes
Number of 384 192 768

UMTS HSDPA
UEs
Number of 384 192 768

UMTS HSUPA
UEs
Number of LTE  6x20 MHz  9x20 MHz 4T4R  12x20 MHz 4T4R
FDD Cells 4T4R  3x20 MHz 8T8R  6x20 MHz 8T8R
 3x20 MHz (only 10/15/20 (only 10/15/20
8T8R (only MHz) MHz)
10/15/20 MHz)
Maximum  1.4 MHz  1.4 MHz  1.4 MHz

Number of LTE bandwidth: bandwidth: 1512 bandwidth: 2016

BBU5900
FDD UEs in 1008  3/5/10/15/20  3/5/10/15/20 MHz

RRC Connected  3 MHz MHz bandwidth: bandwidth: 3360
Mode bandwidth: 2520
2160
 5/10/15/20 MHz
bandwidth:
2520
Maximum LTE DL: 1200 DL: 1200 DL: 2400

FDD UL: 600 UL: 600 UL: 1200
Throughput
(Mbit/s)
Maximum 3x400 kHz 4T4R 3x400 kHz 4T4R 3x600 kHz 4T4R
Number of LTE
NB-IoT Cells
Maximum 1,156,000 1,156,000 2,081,000

Number of LTE
NB-IoT UEs
Maximum LTE 540,000 540,000 972,000

NB-IoT
Signaling
Specifications
Maximum 1800 which can be 1800 which can be 1800 which can be
Number of LTE shared with LTE shared with LTE shared with LTE FDD;
NB-IoT UEs in FDD; ≤ 3600 in FDD; ≤ 3600 in total ≤ 4800 in total
RRC Connected total
Mode
Maximum LTE DL: 0.666 DL: 0.666 DL: 0.942

NB-IoT UL: 1.2 UL: 1.2 UL: 1.8
Throughput
(Mbit/s)
Table 2-46 LMN co-BBP baseband specifications (UBBPg)

Board UBBPg2/UBBPg2a UBBPg3
Number of LTE FDD  6x20 MHz 4T4R  12x20 MHz 4T4R

Cells  3x20 MHz 8T8R (only  6x20 MHz 8T8R (only
10/15/20 MHz) 10/15/20 MHz)
Maximum Number of  1.4 MHz bandwidth:  1.4 MHz bandwidth: 2016

LTE FDD UEs in RRC 1008  3/5/10/15/20 MHz
Connected Mode  3 MHz bandwidth: 2160 bandwidth: 3360
 5/10/15/20 MHz
bandwidth: 2520
Maximum LTE FDD DL: 1200 DL: 2400

BBU5900
Throughput (Mbit/s) UL: 600 UL: 1200
Maximum Number of 3x400 kHz 4T4R 3x600 kHz 4T4R

LTE NB-IoT Cells
Maximum Number of 1,156,000 2,081,000

LTE NB-IoT UEs
Maximum LTE NB-IoT 540,000 972,000

Signaling
Specifications
Maximum Number of 1800 which can be shared 1800 which can be shared
LTE NB-IoT UEs in with LTE FDD; ≤ 3600 in with LTE FDD; ≤ 4800 in
RRC Connected Mode total total
Maximum LTE NB-IoT DL: 0.666 DL: 0.942

Throughput (Mbit/s) UL: 1.2 UL: 1.8
Number of NR Cells NR FDD sub-3 GHz: 3x20 NR FDD sub-3 GHz: 9x20
MHz 4T4R MHz 4T4R
Maximum Number of 300 600

NR UEs in RRC
Connected Mode
Maximum NR TBD TBD

Throughput (Mbit/s)
Table 2-47 GUL co-BBP baseband specifications
Board UBBPd6
Number of GSM TRXs 12
UMTS Number of Cells 6

Number of UL CEs 256
Number of DL CEs 384
Number of HSDPA Codes 6x15
Number of HSDPA UEs 192
Number of HSUPA UEs 192

LTE FDD Number of Cells 3x20 MHz 4T4R
Maximum Number of UEs  1.4 MHz bandwidth: 504

in RRC Connected Mode  3 MHz bandwidth: 1080
 5 MHz bandwidth: 1800
 10/15/20 MHz bandwidth: 3600
Maximum Throughput DL: 600; UL: 225

BBU5900
(Mbit/s)
2.2 Capacity Specifications

2.2.1 GSM Capacity Specifications
Table 2-48 Capacity specifications of a GSM BBU
Specifications Board Configuration
A single site supports a maximum of 12 cells and 1 UMPTb+2 UBBPd

each cell supports a maximum of 24 TRXs.
 IP over FE transmission: 72 TRXs
 IP over E1 transmission: 48 TRXs
2.2.2 UMTS Capacity Specifications

Table 2-49 Capacity specifications of a UMTS BBU
RAT Specifications Board Configuration
UMTS 48 cells 1 UMPT+6 UBBPd6

UL: 6144 CEs; DL: 6144 CEs
2.2.3 LTE Capacity Specifications

2.2.3.1 LTE FDD Capacity Specifications
Table 2-50 Capacity specifications of an LTE FDD BBU
Item Specifications
Maximum number of cells  One UMPTb:

36 cells (2T2R/2T4R/4T4R, 20 MHz)
 One UMPTe:
72 cells (2T2R/2T4R/4T4R, 20 MHz)
 One UMPTg:
144 cells (2T2R/2T4R/4T4R, 20 MHz); 72 cells (8T8R,
20 MHz)
Maximum throughput  UMPTb1/UMPTb2:

− One UMPTb1/UMPTb2 board: The sum of uplink
and downlink data rates at the MAC layer is 1.5

BBU5900
Item Specifications
Gbit/s.
− Two UMPTb1/UMPTb2 boards: The sum of uplink
and downlink data rates at the MAC layer is 3
Gbit/s.
 UMPTb3/UMPTb9:
Gbit/s.
Gbit/s.
 One UMPTe:
The sum of uplink and downlink data rates at the MAC
layer is 10 Gbit/s.
 One UMPTg:
layer is 20 Gbit/s.
Maximum number of UEs in  One UMPTb: 10,800

RRC connected mode  UMPTe:
− One UMPTe board: 14,400
− Two UMPTe boards: 28,800
 One UMPTg: 28,800
Maximum number of data  One UMPTb: 32,400

radio bearers (DRBs) per  One UMPTe: 43,200
eNodeB
2.2.3.2 LTE NB-IoT Capacity Specifications
Table 2-51 Capacity specifications of an LTE NB-IoT BBU
Item Specifications

36 cells (4T4R, 600 kHz)
 One UMPTe:
 One UMPTg:
Maximum throughput  One UMPTb:
Uplink data rate at the MAC layer: 21.6 Mbit/s;
downlink data rate at the MAC layer: 11.3 Mbit/s
 One UMPTe:

BBU5900
Item Specifications
 One UMPTg:
Maximum number of UEs  One UMPTb: 10,800

in RRC connected mode  One UMPTe: 14,400
2.2.3.3 LTE FDD+NB-IoT Capacity Specifications
Table 2-52 Capacity specifications of an LTE FDD+NB-IoT BBU

Item Specifications

36 cells (4T4R, 20 MHz/600 kHz)
 One UMPTe:
 One UMPTg:

layer is 1.5 Gbit/s.
 UMPTb3/UMPTb9:
layer is 2 Gbit/s.
 One UMPTe:
layer is 10 Gbit/s.
 One UMPTg:
layer is 20 Gbit/s.

RRC connected mode  One UMPTe: 14,400
LTE FDD and LTE NB-IoT share the maximum number of LTE cells and UEs on the main control
board.

BBU5900
2.2.3.4 LTE FDD+TDD Capacity Specifications
Table 2-53 Capacity specifications of an LTE FDD+TDD BBU
Item Specifications
Maximum number of cells  One UMPTb: 36

 One UMPTe: 72
 One UMPTg: 144
and downlink data rates at the MAC layer is 1.5
Gbit/s.
Gbit/s.
 UMPTb3/UMPTb9:
Gbit/s.
Gbit/s.
 One UMPTe:
layer is 10 Gbit/s.
 One UMPTg:
layer is 20 Gbit/s.

RRC connected mode  UMPTe:
− One UMPTe board: 14,400
− Two UMPTe boards: 28,800
Maximum number of DRBs  One UMPTb: 32,400

per eNodeB  One UMPTe: 43,200
LTE FDD and TDD dynamically share the specifications of the main control board.
LTE FDD cells support the 1.4, 3, 5, 10, 15, or 20 MHz bandwidth.
For details of bandwidths supported by LTE TDD cells, see DBS5900 LTE TDD Product Description.

BBU5900
2.2.4 NR Capacity Specifications

Table 2-54 NR capacity specifications
Item Specifications Specifications
Maximum number of cells Three UBBPfw1 boards and two Six UBBPg boards and
UMPTe boards: two UMPTg boards:
 NR TDD sub-6 GHz: 18 cells,  NR FDD sub-3 GHz:
100 MHz, 8T8R 108 cells, 20 MHz,
 NR TDD sub-6 GHz: 9 cells, 4T4R
100 MHz, 32T32R  NR TDD sub-6 GHz:
 NR TDD sub-6 GHz: 9 cells, 36 cells, 100 MHz,
100 MHz, 64T64R 8T8R
 NR TDD sub-6 GHz:
 NR TDD mmWave: 36 cells,
100 MHz, 4T4R 18 cells, 100 MHz,
32T32R
 NR TDD mmWave: 36 cells,
 NR TDD sub-6 GHz:
200 MHz, 4T4R
18 cells, 100 MHz,
64T64R
 NR TDD mmWave:
72 cells, 200 MHz,
4T4R
Maximum throughput DL+UL: 20 Gbit/s DL+UL: 50 Gbit/s
Maximum number of UEs 3600 7200

in RRC connected mode
Maximum number of 10,800 21,600

DRBs per gNodeB
2.2.5 Multi-RAT Capacity Specifications
As listed in Table 2-55, Table 2-56, and Table 2-57:

 If GSM is configured with 72 TRXs (S24/24/24), each TRX can only be configured with one
Standalone Dedicated Control Channel (SDCCH). If GSM is configured with 24 TRXs (S8/8/8),
each TRX can be configured with three SDCCHs.
 The UL capacity specifications of a UL base station are the same as those of a GUL base station.
 LTE FDD and LTE TDD dynamically share the specifications of the main control board.
 In a typical GL, UL, or GUL scenario where the capacity specifications of GSM and UMTS remain
unchanged, LTE FDD capacity specifications of the main control board are affected after LTE
NB-IoT is available. LTE FDD and NB-IoT share the maximum number of original LTE FDD cells
and UEs in RRC connected mode on the main control board.
Table 2-55 Capacity specifications of a GU BBU
RAT Specifications Typical Board Configuration
GU GSM S24/24/24+UMTS 4x12 (UL: 1 UMPTb+5 UBBPd6

BBU5900

5120 CEs; DL: 5120 CEs)
Table 2-56 Capacity specifications of a GL BBU
GL GSM S24/24/24+36 LTE cells (2T2R, 1 UMPTb+6 UBBPd6

10/15/20 MHz, 7200 UEs in RRC
connected mode, a total of 1500 Mbit/s
uplink and downlink data rates at the
MAC layer per eNodeB)
Table 2-57 Capacity specifications of a GUL BBU

RAT Specifications Board Configuration
GUL GSM S24/24/24+18 UMTS cells+18 1 UMPTb+3 UBBPd5_U+3

LTE cells (2T2R, 10/15/20 MHz, 7200 UBBPd5_L
UEs in RRC connected mode)
GSM S24/24/24+24 UMTS cells+72 1 UMPTg+2 UBBPe4_U+4

LTE cells (2T2R, 20 MHz, 14,400 UEs UBBPg3_L
in RRC connected mode)
Table 2-58 Capacity specifications of an LN BBU
24 LTE cells (4x[6x20 MHz], 4T4R, 5400 1 UMPTe+4 UBBPe4+1 UBBPfw1

UEs in RRC connected mode)+6 NR cells
([6x100 MHz], 8T8R, 1200 UEs in RRC
connected mode)
24 LTE cells (4x[6x20 MHz], 4T4R, 5400

([3x100 MHz], 32T32R, 1200 UEs in RRC
connected mode)
24 LTE cells (4x[6x20 MHz], 4T4R, 5400
([3x100 MHz], 64T64R, 1200 UEs in RRC
connected mode)
72 LTE cells (3x[24x20 MHz], 4T4R, 1 UMPTg+3 UBBPg3+3 UBBPg3

14,400 UEs in RRC connected mode)+18
NR cells ([18x100 MHz], 8T8R, 3600 UEs
in RRC connected mode)
72 LTE cells (3x[24x20 MHz], 4T4R,

BBU5900

14,400 UEs in RRC connected mode)+9 NR
cells ([9x100 MHz], 64T64R, 3600 UEs in
RRC connected mode)
When the UBBPfw1 is configured, the maximum numbers of LTE and NR cells are restricted by both
main control board and baseband processing board capabilities. This section only lists the maximum cell
numbers in typical configurations. In LN concurrency scenarios, a maximum of 72 LTE cells and 36 NR
cells are supported, and a maximum of 5400 LTE UEs and 2400 NR UEs in RRC connected mode are
supported.
Table 2-59 Capacity specifications of a GULN BBU
GSM S24/24/24+36 UMTS cells+36 LTE 1 UMPTg+3 UBBPg3_UL+3 UBBPg3_N

cells (4T4R, 10/15/20 MHz, 14,400 UEs in
RRC connected mode)+18 NR cells
([18x100 MHz], 8T8R, 3600 UEs in RRC
connected mode)
GSM S24/24/24+36 UMTS cells+36 LTE

cells (4T4R, 10/15/20 MHz, 14,400 UEs in
RRC connected mode)+9 NR cells ([9x100
MHz], 64T64R, 3600 UEs in RRC
connected mode)
The maximum numbers of LTE and NR cells are restricted by both main control board and baseband
processing board capabilities. This section only lists the maximum cell numbers in typical
configurations. In GULN concurrency scenarios, a maximum of 72 GSM cells, 48 UMTS cells, 72 LTE
cells, and 36 NR cells are supported.
2.3 Signaling Specifications

2.3.1 LTE Signaling Specifications
Busy hour call attempt (BHCA) is the number of calls attempted at the hour with the highest
amount of data traffic. Signaling procedures required for completing a call may include the
following:
 Call setup
 Call release (including CSFB if it occurs)
 Handover
 Tracking area update (TAU)
 DRB setup and release
 Transition from the uplink-synchronized state to the uplink-asynchronized state

BBU5900
BHCA indicates the signaling processing capabilities of a system.

A busy-hour call initiated on different operators' networks involves different types and
numbers of signaling procedures, consuming different amounts of eNodeB resources. As a
result, the BHCA capability varies with the traffic model.
2.3.1.1 LTE FDD Signaling Specifications

The following table lists the signaling specifications of the boards working in LTE FDD mode
based on the definition of one BHCA in Table 2-87.
Table 2-60 Signaling specifications of LTE FDD boards
Board Specifications (BHCA)
UMPTb 360,000
UMPTe 1,620,000
UMPTg 3,240,000
UBBPd3/UBBPd4 270,000
UBBPe1/UBBPe2 270,000
UBBPe5 540,000
UBBPe6 648,000
UBBPex2 432,000
UBBPg2 720,000
UBBPg2a 720,000
UBBPg3 1,296,000
The signaling specifications of an eNodeB cannot exceed 3,240,000 BHCAs.
2.3.1.2 LTE NB-IoT Signaling Specifications
Table 2-61 Signaling specifications of LTE NB-IoT boards

UMPTa 432,000
UMPTb 540,000
UMPTe 2,430,000
UMPTg 4,860,000

BBU5900
UBBPe5 810,000
UBBPe6 972,000
UBBPg2 1,080,000
UBBPg2a 1,080,000
UBBPg3 1,944,000
2.3.1.3 LTE FDD+NB-IoT Signaling Specifications

The following table lists the signaling specifications of the boards working in LTE
FDD+NB-IoT mode.
Table 2-62 Signaling specifications of LTE FDD+NB-IoT boards
UMPTb 252,000+161,000
UMPTe 1,296,000+484,000
UMPTg 2,592,000+968,000
UBBPd3/UBBPd4 189,000+121,000
UBBPd5/UBBPd6 277,000+177,000
UBBPe1/UBBPe2 189,000+121,000
UBBPe3/UBBPe4 302,000+193,000
UBBPe5 378,000+242,000
UBBPe6 454,000+292,000
UBBPg2 504,000+324,000
UBBPg2a 504,000+324,000
UBBPg3 907,000+583,000
The signaling specifications of an eNodeB cannot exceed 4,860,000 BHCAs.

BBU5900
2.3.1.4 LTE FDD+TDD Signaling Specifications

The following table lists the signaling specifications of the boards working in LTE
FDD+TDD mode.
Table 2-63 Signaling specifications of LTE FDD+TDD boards

UMPTb 360,000
UMPTe 1,620,000
UMPTg 3,240,000
 The signaling specifications of an eNodeB cannot exceed 3,240,000 BHCAs.

 LTE FDD and LTE TDD share signaling specifications of a main control board.
2.3.1.5 LTE TDD+NB-IoT Signaling Specifications

The following table lists the signaling specifications of main control boards and baseband
processing boards working in LTE TDD+NB-IoT.
Table 2-64 Board signaling specifications
UBBPe4 302,000+193,000
UBBPe6 454,000+292,000
UBBPg2 504,000+324,000
UBBPg2a 504,000+324,000
UBBPg3 907,000+583,000
2.3.2 NR Signaling Specifications

The following table lists the signaling specifications of the boards working in NR mode based
on the Huawei control plane traffic model.
Table 2-65 NR signaling specifications
UMPTe 648,000
UMPTg 1,296,000
For details of the Huawei control plane reference traffic model, see 2.7.3 NR Traffic Model.

BBU5900
2.3.3 Signaling Specifications of Multi-RAT Base Stations

The following tables list the signaling specifications of co-MPT GU, GL, UL, GUL, LN, and
GULN base stations.
 If GSM is configured with 72 TRXs (S24/24/24), each TRX can be configured with only one
SDCCH. If GSM is configured with 24 TRXs (S8/8/8), each TRX can be configured with three
SDCCHs.
 Common NodeB Application Protocol (CNBAP) indicates the signaling traffic of a NodeB over the
Iub interface. The NodeB application part (NBAP) is defined in 3GPP specifications, and one
CNBAP indicates one radio link (RL) establishment procedure.
 In a typical GL, UL, or GUL scenario where the signaling specifications of GSM and UMTS remain
unchanged, LTE signaling specifications (BHCA) of the main control board are affected after LTE
NB-IoT is available. LTE FDD and LTE NB-IoT share LTE signaling processing specifications of
the main control board. On commercial networks, it is recommended that 30% of LTE signaling
processing specifications be allocated to LTE NB-IoT.
Table 2-66 Signaling specifications of a co-MPT GU base station

Typical Board GSM (TRX) UMTS (CNBAPS)
Configuration
1xUMPTb1+4xUBBPd2_U 24 800
1xUMPTb1+5xUBBPd1 24 1000
1xUMPTe+5xUBBPd1 24 1000
Table 2-67 Signaling specifications of a co-MPT GL base station
Typical Board GSM (TRX) LTE FDD (BHCA)

Configuration
1xUMPTb1+5xUBBPd3_L 24 504,000
1xUMPTb1+2xUBBPd3 48 414,000
1xUMPTe+6xUBBPd3 48 1,170,000
1xUMPTe+6xUBBPe4_L 24 1,350,000
Table 2-68 Signaling specifications of a co-MPT UL base station
Typical Board UMTS (CNBAPS) LTE FDD (BHCA)

Configuration
1xUMPTb1+3xUBBPd2_U 600 450,000

BBU5900
Typical Board UMTS (CNBAPS) LTE FDD (BHCA)

Configuration
+2xUBBPd3_L

+4xUBBPd3_L

+1xUBBPd3_L

L+1xUBBPd1_U+1xUBBP
d3_L
+1xUBBPd3_L

+2xUBBPd3_L
1xUMPTe+1xUBBPd6_U+ 350 1,350,000
5xUBBPd3_L
1xUMPTe+2xUBBPd6_U+ 600 1,206,000

4xUBBPe4_L
Table 2-69 Signaling specifications of a co-MPT GUL base station
Typical Board GSM (TRX) UMTS (CNBAPS)

Configuration LTE FDD (BHCA)
+3xUBBPd3_L 414,000
+2xUBBPd3_L 414,000
L+1xUBBPd1_U+1xUBBP 414,000
d3_L
+1xUBBPd3_L 270,000
+1xUBBPd3_L 234,000
1xUMPTe+1xUBBPd6_U+ 24 350
5xUBBPd3_L 1,170,000
1xUMPTe+2xUBBPd6_U+ 24 600
4xUBBPe4_L 900,000

BBU5900
Table 2-70 Signaling specifications of a co-MPT LN base station
Typical Board LTE (BHCA) NR (BHCA)

Configuration
1xUMPTe+4xUBBPe4+1x 540,000 432,000

UBBPfw1
1xUMPTg+4xUBBPe4+2x 1,080,000 648,000
UBBPg3
When the UBBPfw1 is configured, the LTE and NR signaling specifications are restricted by both main
control board and baseband processing board capabilities. This section only lists the signaling
specifications in typical configurations. In LN concurrency scenarios, the maximum LTE and NR
signaling specifications are 540,000 BHCAs and 432,000 BHCAs.
Table 2-71 Signaling specifications of a co-MPT GULN base station

Typical Board GSM UMTS LTE NR (BHCA)
Configuration (TRX) (CNBAPS) (BHCA)
1xUMPTg+1xUBBPd6 24 300 810,000 486,000

_U+3xUBBPe6_L+2xU
BBPg3_N
2.4 CPRI Specifications

CPRI Port Quantity and Bandwidth
Table 2-72 CPRI port specifications

Board Por Q Prot Supported Rate (Gbit/s) Topology
t u ocol
Ty a Typ
pe n e
ti
t
y
UBBP SF 6 CPRI 1.2288/2.457/4.915/6.144/9.830 Star, chain, or ring

d/UBB P
Pe
UBBPf SF 3 CPRI 2.457/4.915/6.144/9.830 Star, chain, or trunk

w1 P chain
mode 1
QS 3 CPRI 4x10.1376/4x24.33024 Star, chain, or trunk
FP chain

BBU5900
Board Por Q Prot Supported Rate (Gbit/s) Topology

t u ocol
Ty a Typ
pe n e
ti
t
y
UBBPf SF 3 CPRI 2.457/4.915/6.144/9.830/10.1376/24.3 Star or load sharing

w1 P 3024
mode 2
eCP 10.3125/25.78125
RI
SF 3 CPRI 2.457/4.915/6.144/9.830/10.1376/24.3
P* 3024
eCP 10.3125/25.78125
RI
UBBP SF 6 CPRI 2.457/4.915/6.144/9.830/10.1376/24.3 Star, chain, ring, or

g P 3024 load sharing
eCP 10.3125/25.78125
RI
The asterisk (*) indicates that the specifications are supported using a QSFP28 to SFP28 adapter
(QSA28).
For details of QSA, see 4.2 Appendix 2: QSA28.
CPRI Bandwidth Access Capability
Table 2-73 Mapping between the CPRI port rate and the number of GSM TRXs
CPRI Port Rate (Gbit/s) Number of 1T2R TRXs Number of 2T2R/1T4R
TRXs
1.25 24 12
2.5 48 24
4.9 48 24
9.8 48 24
Table 2-74 Mapping between the CPRI port rate and the number of UMTS cells
CPRI Port Rate (Gbit/s) Number of 1T2R/2T2R* Cells
1.25 4
2.5 8

BBU5900
CPRI Port Rate (Gbit/s) Number of 1T2R/2T2R* Cells
4.9 16
6.144 24
9.8 32
40.55 48
The asterisk (*) indicates that the number of supported cells is reduced by half if the 2T2R cell supports
VAM and the two TX antennas are configured on two RF modules in two CPRI links for VAM.
Table 2-75 Mapping between the CPRI port rate and the number of LTE FDD cells
CPRI Number of Number of 1T2R/2T2R Number of 1T1R Cells

Port 2T4R/4T4R Cells
Rate Cells
(Gbit/s
)
1.25 4x4 MIMO cells  4 (cell bandwidth ≤ 3  8 (cell bandwidth ≤ 3

are not MHz) MHz)
recommended  2 (cell bandwidth ≤ 5  4 (cell bandwidth ≤ 5
because of the MHz) MHz)
limited
transmission
 1 (cell bandwidth ≤ 10  2 (cell bandwidth ≤ 10
bandwidth of the MHz) MHz)
CPRI ports.  1 (cell bandwidth =
15/20 MHz)
2.5 1 (cell bandwidth  4 (cell bandwidth ≤ 5  8 (cell bandwidth ≤ 5

≤ 10 MHz) MHz) MHz)
 2 (cell bandwidth ≤ 10  4 (cell bandwidth ≤ 10
MHz) MHz)
 1 (cell bandwidth = 15/20  2 (cell bandwidth =
MHz) 15/20 MHz)
4.9  2 (cell  4 (cell bandwidth ≤ 10  8 (cell bandwidth ≤ 10

bandwidth ≤ MHz) MHz)
10 MHz)  2 (cell bandwidth = 15/20  4 (cell bandwidth =
 1 (cell MHz) 15/20 MHz)
bandwidth =
15/20 MHz)

bandwidth =
15/20 MHz)

BBU5900
CPRI Number of Number of 1T2R/2T2R Number of 1T1R Cells

Port 2T4R/4T4R Cells
Rate Cells
(Gbit/s
)
bandwidth =
15/20 MHz)

bandwidth =
15/20 MHz)
10 MHz)  16 (cell bandwidth =  32 (cell bandwidth =
 8 (cell 15/20 MHz) 15/20 MHz)
bandwidth =
15/20 MHz)

10 MHz)  20 (cell bandwidth =  40 (cell bandwidth =
 8 (cell 15/20 MHz) 15/20 MHz)
bandwidth =
15/20 MHz)
Table 2-76 Mapping between the CPRI port rate and the number of LTE NB-IoT cells
CPRI Port Rate Number of 1T2R/2T2R Number of 2T4R/4T4R

(Gbit/s) Cells Cells
1.25 4 2
2.5 8 4
4.9 16 8
9.8 32 16

BBU5900
Table 2-77 Mapping between the CPRI port rate and the number of NR cells
Mo CPRI Port Cell Type Supported

de Rate Number of
(Gbit/s) Cells or
Sectors
eCP 1x25.78125 NR TDD sub-6 GHz: 100 MHz, 64T64R 1 sector

RI

RI

RI
RI
CPR 1x24.33024 NR TDD sub-6 GHz: 100 MHz, 8T8R 1 sector

I
I
I
eCP 1x25.78125 NR TDD mmWave: 800 MHz, 4T4R One sector (four
RI 200 MHz cells)
eCP 2x10.3125 NR TDD mmWave: 800 MHz, 4T4R One sector (four
RI 200 MHz cells)
The cell types and the number of supported cells or sectors in the preceding table only apply to typical
scenarios. For cell types that are not listed here, contact Huawei engineers to obtain the corresponding
number of supported cells.
Maximum Distance Between BBU and AAUs/RRUs
The maximum distance between a BBU and AAUs/RRUs depends on the capabilities of optical modules
or fronthaul solutions.
The following maximum distances between a BBU and AAUs/RRUs are based on fronthauls in a
point-to-point direct drive mode.
Table 2-78 Maximum distance between a BBU and RRUs
RAT Maximum Distance Between BBU and AAUs/RRUs
GSM 40 km
UMTS 40 km
LTE  UBBPd/UBBPe: 40 km

BBU5900
RAT Maximum Distance Between BBU and AAUs/RRUs

 UBBPg: 40 km (CRPI); 20 km (eCPRI)
NR  10 km: 25 Gbit/s optical modules are used for NR TDD (sub-6 GHz).
 10 km: 40 Gbit/s or 100 Gbit/s optical modules are used for NR TDD
(sub-6 GHz) with AAUs using CPRI ports.
 20 km: 10 Gbit/s optical modules are used for NR TDD (sub-6 GHz) with
AAUs using eCPRI ports.
 10 km: 25 Gbit/s optical modules are used for NR TDD (sub-6 GHz) with
 10 km: 25 Gbit/s optical modules are used for NR TDD (mmWave) with
 20 km: 10 Gbit/s optical modules are used for NR TDD (mmWave) with
GU 40 km
GL  UBBPd/UBBPe: 40 km
 LBBPd3:
UL
− 40 km (cell quantity ≤ 3)
GUL
− 20 km (cell quantity ≥ 4)
2.5 Transmission Port Specifications

Table 2-79 Transmission port specifications
RAT Specifications
GSM UMPTb1/UMPTb 1 E1/T1 port (transmitting 4 channels of E1/T1 signals),

2 1 FE/GE electrical port, and 1 FE/GE optical port
UMPTb3/UMPTb 1 FE/GE electrical port and 1 FE/GE optical port
9
UMPTe 2 FE/GE electrical ports and 2 XGE optical ports

UMPTg 2 FE/GE electrical ports and 2 YGE optical ports
UMTS UMPTb1/UMPTb 1 E1/T1 port (transmitting 4 channels of E1/T1 signals),


9
LTE UMPTb1/UMPTb 1 E1/T1 port (transmitting 4 channels of E1/T1 signals),


BBU5900
RAT Specifications

9

NR UMPTe 2 XGE optical ports
UMPTg 2 YGE optical ports
This section describes only the transmission ports on a BBU working in a single RAT. The number of
transmission ports on a BBU working in multiple RATs equals the sum of the transmission ports on the
boards in each RAT.
2.6 Equipment Specifications

Table 2-80 Input power
Type Input Power Voltage Range
BBU5900 –48 V DC –38.4 V DC to –57 V DC

(configured with the
UPEUe)
Table 2-81 Dimensions and weight
Item Specifications
Dimensions (H x W x 86 mm x 442 mm x 310 mm

D)
Weight BBU5900 ≤ 18 kg (full configuration)
Table 2-82 Heat dissipation

Item Specifications
FANf 2100 W
Table 2-83 Environmental specifications

Item Specifications

BBU5900
Item Specifications
Operating temperature –20ºC to +55ºC (long term)
Relative humidity 5% RH to 95% RH

Ingress Protection IP20
Rating
Atmospheric pressure 70 kPa to 106 kPa
Noise power level ETS 300 753 3.1

≤ 7.2 bels
Storage time The product must be installed and put into use within a year after
being delivered; otherwise, it may malfunction.
2.7 Traffic Model

2.7.1 LTE FDD Traffic Model
On live networks, the service capacity of an LTE FDD eNodeB depends on system processing
capabilities and the traffic model. This section describes two traffic models:
 Traffic model 1 derives from a typical LTE network where smartphones account for a
large ratio of all UEs accessing the network. UEs in this traffic model are characterized
by the following:
− Short online duration
− Frequent network access and release
− High mobility
− A large number of small-packet data services
 Traffic model 2 derives from a typical LTE network where data cards account for a large
ratio of all UEs accessing the network. LTE dongle and customer-premises equipment
(CPE) are examples of such data cards. UEs in this traffic model are characterized by the
following:
− Long online duration
− Low mobility
− A large number of large-packet data services
The traffic model of the control plane (CP) for models 1 and 2 is illustrated in the following
table.
(1)
: Traffic models described in the preceding table are obtained during busy hours. @BH refers to at
busy hour.
Table 2-84 CP specifications for traffic models 1 and 2
CP Signaling Process Specifications for Specifications for

Traffic Model 1 Traffic Model 2

BBU5900

PS Call Attempt Number per User 180 20

@BH(1) (times)
For example, PS Call Density
Dedicated Bearer Attempt Number per 5 1
User @BH (times)
TAU & Attach & Detach per User 30 5
@BH (times)
Intra-eNodeB Handover Number per 10 1

User @BH (times)
Inter-eNodeB X2 Based Handover Out 40 2
Attempt Number per User @BH
(times)
Inter-eNodeB X2 Based Handover In 40 2

(times)
Inter-eNodeB S1 Based Handover Out 0 0
(times)
Inter-eNodeB S1 Based Handover In 0 0

(times)
Inter-RAT Handover Attempt Number 3 0

per User @BH (times)
Inter-RAT Redirection Attempt 12 0
Number per User @BH (times)
CSFB Based Inter-RAT Handover 0 0
(times)
CSFB Based Inter-RAT Redirection 5 0
(times)
CA Scell Configuration Update 10 0

(times)
Syn2Unsyn Attempt Number per User 0 0

@BH (times)
Unsyn2Syn Attempt Number per User 0 0
@BH (times)
RRC Re-Establish Number per User 2 0

@BH (times)

BBU5900

Paging number @BH (times) 1,260,000 100,000
The following table describes the user plane (UP) specifications for traffic model 1.
Table 2-85 UP specifications for traffic model 1

Service Type PS Call Attempt DL Traffic Ratio of DL/UL
Ratio (%) Volume per PS Traffic Volume
Call (KB)
Web browsing and 35.00 250 15

email
Video downloading, 0.35 20,000 50

uploading, and
streaming
SNS 15.00 200 4
IM 15.00 5 0.7
Music, application 0.50 5000 30

downloading, and
streaming
File sharing and 0.10 400 0.1

storage
Video call 0.20 3000 1
Heart beat 25.00 0.1 1
Other 8.85 50 1
The following table describes the UP specifications for traffic model 2.
Table 2-86 UP specifications for traffic model 2
Service Type PS Call Attempt UL Traffic DL Traffic

Ratio (%) Volume per PS Volume per PS
Call (KB) Call (KB)
FTP 100 600 6000
Based on the definition of traffic model 1, one BHCA (for example, one combined PS call) is
defined by taking every item in traffic model 1 divided by the PS call density. The details of
one BHCA are listed below.

BBU5900
Table 2-87 Definition of one BHCA
Definition of a Combined Call or One BHCA Times
PS Call Attempts 1
Dedicated Bearer Attempts 0.0278

TAU & Attach & Detach Attempts 0.1667
Intra-eNodeB Handover Attempts 0.0556
Inter-eNodeB X2 Based Handover Out Attempts 0.2222
Inter-eNodeB X2 Based Handover In Attempts 0.2222

Inter-eNodeB S1 Based Handover Out Attempts 0
Inter-eNodeB S1 Based Handover In Attempts 0
Inter-RAT Handover Attempts 0.0167
Inter-RAT Redirection Attempts 0.0167
CSFB Based Inter-RAT Handover Attempts 0
CSFB Based Inter-RAT Redirection Attempts 0.0278
CA Scell Configuration Update Attempts 0.0556
Syn2Unsyn Attempts 0
Unsyn2Syn Attempts 0
RRC Re-Establish Attempts 0.0111
2.7.2 LTE NB-IoT Traffic Model

On live networks, the service capacity of an LTE NB-IoT eNodeB depends on system
processing capabilities and the traffic model. This section describes the LTE NB-IoT traffic
models defined in the 3GPP 45.820 protocol.
Table 2-88 Packet interval
Access Interval (Hour) User Ratio
24 40%
2 40%
1 15%
0.5 5%

BBU5900
Table 2-89 User distribution
Coverage Class Ratio
0 (0 dB) 100%
1 (10 dB) 0%
2 (20 dB) 0%
The average packet length is 100 bytes.
Table 2-90 CP traffic model specifications
CP Signaling Process Traffic Model Specifications
PS Call Attempt Number per User @BH (2) 0.467

(times)
Dedicated Bearer Attempt Number per User 0
@BH (times)
TAU & Attach & Detach per User @BH 0.00322(3)

(times)
Intra-eNodeB Handover Number per User 0

@BH (times)
Inter-eNodeB X2 Based Handover Out 0
Attempt Number per User @BH (times)
Inter-eNodeB X2 Based Handover In 0

Inter-eNodeB S1 Based Handover Out 0

Inter-eNodeB S1 Based Handover In 0

Inter-RAT Handover Attempt Number per 0

User @BH (times)
Inter-RAT Redirection Attempt Number per 0

User @BH (times)
CSFB Based Inter-RAT Handover Attempt 0

CSFB Based Inter-RAT Redirection Attempt 0
CA Scell Configuration Update Attempt 0

Syn2Unsyn Attempt Number per User @BH 0

(times)

BBU5900
CP Signaling Process Traffic Model Specifications
Unsyn2Syn Attempt Number per User @BH 0

(times)
RRC Re-Establish Number per User @BH 0

(times)
Paging number @BH (times) 400
(2)
 : Traffic models described in the preceding table are obtained during busy hours. @BH refers to at
busy hour.
(3)
 : The TAU timer is extended to 310 hours.
Table 2-91 UP traffic model specifications

Service Type PS Call Attempt UL Traffic DL Traffic
Ratio (%) Volume per PS Volume per PS
Call (KB) Call (KB)
Uplink data 100 0.1 0
2.7.3 NR Traffic Model

The base station specifications are related to the traffic model of the live network. The
capability and specifications in the live network vary by traffic model. This document
provides the specifications based on the Huawei-defined traffic model, including the CP
traffic model and UP traffic model.
Table 2-92 CP traffic model
Traffic Model Item Unit NSA Traffic SA Traffic Model

Model
PS Call Attempt Number times 0.0000 1.0000
Dedicated Bearer Attempt times 0.0000 0.0278

Number
TAU&Aattach&Detach times 0.0000 0.0278

SgNB Addition Number times 1.0000 0.0000
SgNB Release Number times 0.7778 0.0000
SgNB Modify Number times 0.0556 0.0000
SgNB Change Number times 0.2222 0.0000
Intra-gNodeB-DU times 0.0000 0.0556

Handover Number
Inter-gNodeB-DU, times 0.0000 0.0556

BBU5900
Traffic Model Item Unit NSA Traffic SA Traffic Model

Model
Intra-gNodeB-CU
Handover Number
Inter-gNodeB-CU Xn times 0.0000 0.1667
Based Handover Out
Attempt Number
Inter-gNodeB-CU Xn times 0.0000 0.1667
Based Handover In
Attempt Number
Inter-gNodeB-CU NG2 times 0.0000 0.0278

Based Handover Out
Attempt Number
Inter-gNodeB-CU NG2 times 0.0000 0.0278

Based Handover In
Attempt Number
Inter-RAT Handover times 0.0000 0.0278

Attempt Number
Paging number times 0.0000 0.2500
Table 2-93 UP traffic model
Service Type PS Call Attempt DL Traffic UL Traffic

Ratio (%) Volume per PS Volume Ratio
Call (KB)
Web browsing and 35 250 15

email
Video downloading, 3 25,000 50

uploading, and
streaming
AR/VR 0.1 300,000 50
SNS 15 200 4
IM 15 5 0.7
Music, application 1 6000 30
downloading, and
streaming
File sharing and 0.2 400 0.1
storage
Video call 0.2 3000 1

Heartbeat 25 0.1 1

BBU5900
Service Type PS Call Attempt DL Traffic UL Traffic

Ratio (%) Volume per PS Volume Ratio
Call (KB)
Other 5.5 50 1

BBU5900
Description 3 Acronyms and Abbreviations
3 Acronyms and Abbreviations
Table 3-1 Acronyms and abbreviations
Acronym or Abbreviation Full Name
BBU baseband unit
BITS building integrated timing supply system
CE channel element
CNBAPS Common NodeB Application Parts
CPRI common public radio interface

eCPRI enhanced CPRI
DL downlink
FE fast Ethernet
GE Gigabit Ethernet
GPS Global Positioning System
GSM Global System for Mobile Communications
HSDPA High Speed Downlink Packet Access
IP Internet Protocol
LMT local maintenance terminal
IM instant messaging
LTE Long Term Evolution
MAC Media Access Control

MIMO multi-input multi-output
NB-IoT Narrowband Internet of Things
NR New Radio
OMC operation and maintenance center

BBU5900
Description 3 Acronyms and Abbreviations
Acronym or Abbreviation Full Name
RGPS Remote Global Positioning System
SNS Social Networking Service

SUL supplementary uplink
TOD time of day
UEIU universal environment interface unit

UL uplink
UMTS Universal Mobile Telecommunications System
UMPT universal main processing and transmission unit
UPEU universal power and environment interface unit
USCU universal satellite card and clock unit

UTRP universal transmission processing unit

BBU5900
Description 4 Appendix
4 Appendix
4.1 Appendix 1: NR Spectrum List

4.2 Appendix 2: QSA28
4.1 Appendix 1: NR Spectrum List

Table 4-1 Sub-3 GHz spectrum list (NR FDD)
Band Duplex Mode and Frequency Band
n1 FDD: DL 1920–1980 MHz/UL 2110–2170 MHz
n2 FDD: DL 1850–1910 MHz/UL 1930–1990 MHz
n3 FDD: DL 1710–1785 MHz/UL 1805–1880 MHz
n5 FDD: DL 824–849 MHz/UL 869–894 MHz
n7 FDD: DL 2500–2570 MHz/UL 2620–2690 MHz

n8 FDD: DL 880–915 MHz/UL 925–960 MHz
n20 FDD: DL 832–862 MHz/UL 791–821 MHz
n28 FDD: DL 703–748 MHz/UL 758–803 MHz

n38 FDD: DL 2570–2620 MHz/UL 2570–2620 MHz
n41 FDD: DL 2496–2690 MHz/UL 2496–2690 MHz
n50 FDD: DL 1432–1517 MHz/UL 1432–1517 MHz

n51 FDD: DL 1427–1432 MHz/UL 1427–1432 MHz
n66 FDD: DL 1710–1780 MHz/UL 2110–2200 MHz

n70 FDD: DL 1695–1710 MHz/UL 1995–2020 MHz
n71 FDD: DL 663–698 MHz/UL 617–652 MHz

n74 FDD: DL 1427–1470 MHz/UL 1475–1518 MHz

BBU5900
Table 4-2 Sub-3 GHz spectrum list (SUL)
n80 SUL: 1710–1785 MHz
n81 SUL: 880–915 MHz
n82 SUL: 832–862 MHz
n83 SUL: 703–748 MHz
n84 SUL: 1920–1980 MHz
Table 4-3 Sub-6 GHz spectrum list (NR TDD)
n77 TDD: 3.3–4.2 GHz
n78 TDD: 3.3–3.8 GHz

n79 TDD: 4.4–5 GHz
Table 4-4 mmWave spectrum list
n257 TDD: 26.5–29.5 GHz
n258 TDD: 24.25–27.5 GHz
n260 TDD: 37–40 GHz
4.2 Appendix 2: QSA28

The QSFP28 to SFP28 adapter (QSA28) enables smooth, cost-effective connections between
an SFP port and a QSFP Port. The QSA28 conforms to SFF-8402 for the SFP28 standards and
to SFF-8665 for QSFP28 standards. The adapter has a QSFP28 form factor with a receptacle
for an SFP28 transceiver or AOC connector.

BBU5900

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BBU5900

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Huawei Technologies Co., Ltd.

2 Technical Specifications ..................................................................................................... 25

Issue 07 (2018-09-07) Copyright © Huawei Technologies Co., Ltd. ii

2.2.3.4 LTE FDD+TDD Capacity Specifications ................................................................................................................... 66

3 Acronyms and Abbreviations............................................................................................. 90

Issue 07 (2018-09-07) Copyright © Huawei Technologies Co., Ltd. iii

Issue 07 (2018-09-07) Copyright © Huawei Technologies Co., Ltd. 1

Figure 1-1 BBU5900 exterior with half-width slots

Figure 1-2 BBU5900 exterior with full-width slots

Table 1-1 BBU5900 boards

Board Board Subboard Type

Main UMPTb UMPTb1, UMPTb2, UMPTb3, and UMPTb9

UMPTg UMPTg1, UMPTg2, and UMPTg3

Baseband UBBPd UBBPd1, UBBPd2, UBBPd3, UBBPd4, UBBPd5, and

Issue 07 (2018-09-07) Copyright © Huawei Technologies Co., Ltd. 2

Board Board Subboard Type

Baseband UBBPf UBBPfw1

Power and UPEU UPEUe

Environme UEIU UEIUb

Figure 1-3 UMPTb1 panel

Figure 1-4 shows the UMPTb2 panel.

Issue 07 (2018-09-07) Copyright © Huawei Technologies Co., Ltd. 3

Figure 1-4 UMPTb2 panel

Figure 1-5 shows the UMPTb3 or UMPTb9 panel.

Figure 1-5 UMPTb3 or UMPTb9 panel

Figure 1-6 shows the UMPTe panel.

Figure 1-6 UMPTe panel

Figure 1-7 shows the UMPTg panel.

Figure 1-7 UMPTg panel

Table 1-2 Ports on the UMPTb1 or UMPTb2

Silkscreen Connector Port Quantity Description

FE/GE0 RJ45 1 FE/GE electrical

FE/GE1 SFP 1 FE/GE optical port

CI SFP female 1 Used for BBU

Issue 07 (2018-09-07) Copyright © Huawei Technologies Co., Ltd. 4

Silkscreen Connector Port Quantity Description

USB USB 1 Used for software

E1/T1 DB26 female 1 Used for input and

GPS SMA 1  The GPS port on

RST N/A 1 Reset button

Table 1-3 describes the ports on the UMPTb3 or UMPTb9.

Table 1-3 Ports on the UMPTb3 or UMPTb9

Silkscreen Connector Port Quantity Description

FE/GE0 RJ45 1 FE/GE electrical port

FE/GE1 SFP 1 FE/GE optical port

CI SFP female 1 Connecting to a universal

Issue 07 (2018-09-07) Copyright © Huawei Technologies Co., Ltd. 5

Silkscreen Connector Port Quantity Description

CLK USB 1 Used for multiplexing TOD

GPS SMA 1  The GPS port on the

Table 1-4 describes the ports on the UMPTe.

Table 1-4 Ports on the UMPTe

Silkscreen Connector Port Quantity Description

FE/GE0 and RJ45 2 FE/GE electrical

XGE1 and XGE3 SFP 2 XGE optical ports

CI SFP female 1 Connecting to a