eNodeB LTE TDD V100R004 Product Description ISSUE 1.00

eNodeB LTE TDD V100R004 Product Description

Confidential Information of Huawei. No Spreading Without Permission

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l E-UTRAN: Evolved UMTS Terrestrial Radio Access NetworkEPC: Evolved Packet Core network


l EPC: Evolved Packet Core networkl MME: Mobility Management Entityl S-GW: Server Gateway

l Functions of NEsl eNodeB

p Radio resource management, including radio bearer control, radio admission control, connection mobility control, and scheduling

p Packet compression and cipheringp Routing of user plane data towards an S-GWp MME selectionp Scheduling and transmission of broadcast information and paging messagesp Measurement and measurement reporting configuration

l MMEp Paging message distributionp Security controlp Mobility management in idle modep SAE bearer controlp Ciphering and integrity protection of Non-Access Stratum (NAS)signaling

l S-GWp Termination of user plane packets that are generated for paging reasonp Support for user plane handovers caused by UE mobility


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l eNodeBs are designed based on a distributed architecture. Each eNodeB consists of two basic types of component: baseband unit BBU3900 and Radio Frequency (RF) unit


two basic types of component: baseband unit BBU3900 and Radio Frequency (RF) unit RRU or RFU.


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l The BBU3900 implements OM management, signaling processing, and radio resource management of the entire eNodeB system and provides ports for data communication


management of the entire eNodeB system and provides ports for data communication between the eNodeB and the MME/S-GW. The BBU3900 performs the following functions:

p Provides ports for data communication between the eNodeB and the MME/S-GW.

p Provides CPRI (Common Public Radio Interface) ports for communication between the BBU3900 and the RRUs.

p Provides USB ports, which facilitate eNodeB upgrade when a USB disk is inserted into the LMPT during software installation and data configuration.

p Provides the OM channel for connection to the M2000.

p Processes uplink and downlink data.

p Manages the entire eNodeB system in terms of OM and signaling processing.

p Provides ports for the system clock.

p Provides ports for alarm monitoring.

l The BBU3900 features a compact case structure that only requires a 19-inch-wide and 2 U-high space. It can be installed on an indoor wall, on the staircase, in the storeroom, or in an outdoor cabinet of the existing network.

l The BBU3900 is configured with the following basic hardware units:

p LTE Main Processing & Transmission unit (LMPT)

p LTE BaseBand Processing unit (LBBP)

p Fan module, that is, FAN

p Power module, that is, Universal Power and Environment interface Unit (UPEU)

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l LMPT


The LTE Main Processing&Transmission Unit (LMPT) is the main control and transmission unit of the BBU3900. It manages the entire eNodeB in terms of OM and signaling processing and provides clock signals for the BBU3900.

l LBBP

The LTE Baseband Processing Unit (LBBP) is the baseband processing unit of the BBU3900. It processes baseband signals and CPRI signals.

l FAN

The FAN module controls the fan speed and monitors the temperature of the module. It dissipates heat for boards and modules of the BBU3900.

l UPEU

The Universal Power and Environment interface Unit (UPEU) is the power module of the BBU3900. It converts +24 V DC or -48 V DC power into the power required for boards and modules of the BBU3900 and provides ports for transmission of external monitoring signals and eight dry contact signals.

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l Control Subsystem : The functions of the control subsystem are implemented by the LMPT. This subsystem performs OM functions, processes signaling, and provides the


LMPT. This subsystem performs OM functions, processes signaling, and provides the system clock. It manages the entire eNodeB

p The OM functions include configuration management, fault management, performance management, security management, and deployment.

p The signaling involves Packet Data Convergence Protocol (PDCP) signaling on the Uu interface and Stream Control Transmission Protocol (SCTP) signaling on the S1 and X2 interfaces.

p The system clock can be one of the following types: Global Positioning System (GPS), IEEE1588 V2, synchronous Ethernet, or Clock over IP

l Transport Subsystem : The functions of the transport subsystem are implemented by the LMPT and UTRP

p Provides ports for communication between the eNodeB and the EPC

p Provides the OM channel between the eNodeB and the Local Maintenance Terminal (LMT) or M2000

p Provides ports for communication between the eNodeB and 2G/3G base stations so that the E1/T1 transmission resources can be shared by the eNodeB and the 2G/3G base stations

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l Baseband Subsystem : The functions of the baseband subsystem are implemented by the LBBP. The baseband subsystem performs the functions for the user plane of the Uu interface, including uplink and downlink scheduling and data processing. In addition, this subsystem provides the Common Public Radio Interface (CPRI) for communication between the BBU3900 and Radio Frequency (RF) units

p According to the indication of uplink scheduling result, the uplink processing module receives data over uplink channels, demodulates and decodes the data, assembles the data into packets, and then transmits the data to the MME or S-GW through the transport subsystem. In addition, the module performs measurements on uplink channels.

p According to the indication of downlink scheduling result, the downlink processing module assembles the data received from the transport subsystem into packets, encodes and modulates the data, performs Multiple Input Multiple Output (MIMO) and Orthogonal Frequency Division Multiplex (OFDM) processing, and then transmits the signals over the CPRI interface.

p The CPRI interface is used for transmission of data between the BBU3900 and RF units

l Power and Environment Monitoring Subsystem :The functions of the power and environment monitoring subsystem are implemented by the UPEU and environment monitoring unit

p Supplies power to the BBU3900.


p Monitors the power status of the BBU3900.

p Provides ports for connections to the environment monitoring unit and receives and forwards the signals from the environment monitoring unit

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l Ports on the LMPT


Label Connector Type

Quantity Function

SFP 0 and SFP 1

LC 2 Ethernet optical port, used for connectingTransmission equipment or gateway Equipment

USB USB 1 Used for loading software to the board.

TST USB 1 Used for testing.

ETH RJ-45 1 Used for local commissioning.

FE/GE0 and FE/GE1

RJ-45 2 Ethernet electrical port, used for connectingTransmission equipment or gateway Equipment

GPS SMA 1 Used for receiving GPS signals.

RST - 1 Used for resetting the BBU3900.

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l Ports on the LBBP


l LEDs for the ports of the LBBP

Label Connector Quantity Description

CPRI0 to CPRI5 SFP female 6

The CPRI ports connect to the LRRUs or LRFUs for transmitting service data, clock signals, and synchronization information

Label Color Status Description

TX RX

Red/Green

Steady green The CPRI link is available.

Steady red The optical module may fail to send or receive signals. (The failure may be caused by a faulty optical module or disconnected optical fiber.)

Blinking red (on for 0.125s and off for 0.125s)

The RRU in the CPRI link has a hardware fault.

Blinking red (on for 1s and off for 1s)

The CPRI link is out of lock (The fault may be caused by mutual lock of dual-mode clock sources or mismatched data rate over CPRI interfaces, and you are advised to check the system configuration) or the VSWR alarm is reported on the RRUs in the CPRI link (because the USB storage disk is under test).

Off The SFP module is not in position or the optical module is powered off.

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l LEDs on the FAN module


LED Color Status Description

STATE

Green

Blinking at 4 Hz (ON for 0.125s and OFF for 0.125s)

The module is not registered and does not report alarms.

Blinking at 0.5 Hz (ON for 1s and OFF for 1s)

The module works properly.

Red ON The module is reporting alarms.

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l The UPEU is classified into three types: Universal Power and Environment Interface Unit Type A (UPEUa), Universal Power and Environment Interface Unit Type B (UPEUb), and


Type A (UPEUa), Universal Power and Environment Interface Unit Type B (UPEUb), and Universal Power and Environment Interface Unit Type C (UPEUc). The UPEUa and UPEUc convert -48 V DC power into +12 V DC, and the UPEUb converts +24 V DC power into +12 V DC.

l LED on the panel of the UPEU

l Description on the ports


Label Color State Meaning

RUN GreenOn The UPEU is working properly.

Off The board is powered on but is faulty.

Slot Label Connector Quantity DescriptionSlot 19 +24 V or -48 V 3V3 1 Introducing +24 V DC or -48 V DC power

EXT-ALM0 RJ-45 1 Port for Boolean inputs 0 to 3EXT-ALM1 RJ-45 1 Port for Boolean inputs 4 to 7MON0 RJ-45 1 Port for RS485 input 0MON1 RJ-45 1 Port for RS485 input 1

Slot 18 +24 V or -48 V 3V3 1 Introducing +24 V DC or -48 V DC powerEXT-ALM0 RJ-45 1 Port for Boolean inputs 0 to 3EXT-ALM1 RJ-45 1 Port for Boolean inputs 4 to 7MON0 RJ-45 1 Port for RS485 input 0MON1 RJ-45 1 Port for RS485 input 1

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l Ports on the UEIU



Label Connector Type

Function

EXT-ALM1 RJ-45 No.4 to 7 Boolean signal input ports

EXT-ALM0 RJ-45 No.0 to 3 Boolean signal input ports

MON1 RJ-45 Used to provide transmission of one RS485 monitoring signal

MON0 RJ-45 Used to provide transmission of one RS485 monitoring signal

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l Ports on UTRP


Label Port Quantity Connector

E1/T1 E1/T1 2 DB26 connector

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l Ports on USCU


Port Connector Description

1. GPS SMA coaxial connector

Receives GPS signals

2. RGPS PCB welded wiring terminal

Receives RGPS signals

3. TOD0 RJ-45 Receives or transmits 1PPS+TOD signals

3. TOD1 RJ45 Receives or transmits 1PPS+TOD signals, and receives TOD signals from the IP clock server

4. M1PPS SMA coaxial connector

Receives 1PPS signals from the Metro1000

5. BITS SMA coaxialconnector

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

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l RRU3231: for India project


l RRU3232 and RRU3233: for China Mobile project

l RRU3235: for Japan project

l RRU3236: for Japan project, now is pending.


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l The RRU3211 is a type of remote radio unit supporting the TDD mode(2T2R).


l The RRU3211 implements the following functions:

p Performs low noise amplification and down-conversion for the signals received from the antenna, performs analog-to-digital conversion, digital down-conversion, filtering, and Automatic Gain Control (AGC) for the received analog Intermediate Frequency (IF) signals, and then transmits the processed baseband digital signals to the baseband unit through the high-speed transmission link.

p Receives downlink baseband data from the BBU, preforms matched filtering, digital upconversion,and Crest Factor Reduction (CFR), modulates the Inphase Quadrature (IQ) differential signals to the TX band before amplifying the signals, and sends the signals from the antenna.

p Multiplexes RX and TX signals, which enables these signals to share the same antenna path. It also filters RX and TX signals.

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Confidential Information of Huawei. No Spreading Without PermissionConfidential Information of Huawei. No Spreading Without Permission

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l Ports and LEDs on the RRU3211 panel



SN Item Label Description

1 Bottom panel

ANTA_TX/RX Main TX/RX portANTC_TX/RX Diversity TX/RX portPGND PGND port

RET Communication port of the RET antenna

2 Cabling cavity panel

TX RX CPRI0Optical port

TX RX CPRI1RTN0(+)

Main power supply socketNEG0(-)RTN1(+) Power supply socket for cascading

RRUsNEG1(-)ETH Port for local maintenance

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l LEDs on the RRU3211

Label Color Status Description

RUN Green On There is power supply, but the board is faulty.

Off There is no power supply.

Blinking (on for 1s and off for 1s)

The board is working properly.

Blinking (on for 0.125s and off for 0.125s)

The software is being loaded to the board, or the board is not started.

ALM Red On Alarms are generated, and the module needs to be replaced.

Off No alarm is generated.

blinking (on for 1s and off for 1s)

Alarms are reported. The alarms may be caused by the faults of the related boards or ports. Therefore, whether the module needs to be replaced cannot be decided.

TX_ACT Green On The RRU is working properly.

Off The software version is being checked or the version check fails.




The software version check is successful, but the TX channel is disabled.

VSWR Red Off No VSWR alarm is reported.

On A VSWR alarm is reported.

CPRI0 Green On The CPRI link is available.

Off The RRU is not configured or not communicating with the BBU.

CPRI1 Green On The CPRI link is available.

Off The RRU is not configured or does not communicate with the BBU.


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l The RRU3233 is a type of radio remote unit supporting the TDD mode(8T8R).



l The RRU3233 implements the following functions:

p Performs low noise amplification and down-conversion for the signals received from the antenna, performs analog-to-digital conversion, digital down-conversion, filtering, and Automatic Gain Control (AGC) for the received analog Intermediate Frequency (IF) signals, and then transmits the processed baseband digital signals to the baseband unit through the high-speed transmission link.

p Receives the downlink baseband data from the BBU, performs matched filtering, digital up-conversion, Crest Factor Reduction (CFR), modulates the Inphase Quadrature (IQ) differential signals to the TX band before amplifying the signals, and sends the signals from the antenna.

p Multiplexes the RX and TX signals, which enables these signals to share the same antenna path. It also filters RX and TX signals.


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l Ports and LEDs on the RRU3233 panel



Item Port Label Description

(1) Bottom portANT1-ANTA8 TX/RX port

RS485/EXT_ALM RET antenna port

(2) Cabling cavity port

TX RX CPRI0/IR0Optical port

TX RX CPRI1/IR1

RTN(+)0Power port

NEG(-)0

ETH Local maintenance port

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l LEDs on the RRU3233

LabelColor Status Description

RUN Green On There is power supply, but the board is faulty.

Off There is no power supply, or the board is faulty.


The board is working properly.

Blinking (on for 0.125s and off for 0.125s)

The software is being loaded to the board, or the board is not started.

ALM Red On Alarms are generated, and the module needs to be replaced.

Off No alarm is generated.


Alarms are reported. The alarms may be caused by the faults of the related boards or ports. Therefore, whether the module needs to be replaced cannot be decided.

ACT Green On The board is working properly with the TX channel enabled.

Blinking (on for 1s and off The board is working properly with the TX




The board is working properly with the TX channel disabled.

VSWR Red Off No VSWR alarm is reported.

On A VSWR alarm is reported.

CPRI0/IR0

Red/Green

Steady green The CPRI link is available.

Steady red The optical module fails to receive signals.


The CPRI link is out of lock.

Off The Small Form-Factor Pluggable (SFP) module is not in position or the optical module is powered off.

CPRI1/IR1

Red/Green

On The CPRI link is functional.

Off The optical module fails to receive signals.


The CPRI link is out of lock.

Off The SFP module is not in position or the optical module is powered off.


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l STMA (Smart Tower-mounted Amplifier) mode. In this mode, the distance between the RRU and the RCU is longer than 20 m and the TMA is required for the eNodeB.


RRU and the RCU is longer than 20 m and the TMA is required for the eNodeB.

p A command is sent to the BBU on the M2000 or the LMT, and then the BBU transfers that command to the RRU. The RRU transfers the DC power and the OOK (On-Off-Keying ) signals to the STMA from the connector on top of the cabinet. The STMA demodulates the OOK signals to RS485 signals and then supplies the RS485 signals and part of the DC power to the RCU.

l SBT( Smart Bias-Tee ) mode. In this mode, the distance between the RRU and the RCU is longer than 20 m and the TMA is not required for the eNodeB.

p A command is sent to the BBU on the M2000 or the LMT, and then the BBU transfers that command to the RRU. The RRU transfer the DC power and the OOK signals to the SBT from the connector on top of the cabinet. The SBT demodulates the OOK signals to RS485 signals and then supplies the RS485 signals and part of the DC power to the RCU.

l Direct connection through multi-core cables. In this mode, the distance between the RRU and the RCU( Remote Control Unit ) is shorter than 20 m.

p A command is sent to the BBU on the M2000 or the LMT, and then the BBU transfers that command to the RRU. The RRU modulates the command to RS485 signals, and then transfers the signals and the DC power to the RCU through multi-core cables.

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l In the case, RCU of Huawei and the SBT of Kathrein are configured.


l The RCU (Remote Control Unit) is the motor drive of the phase shifter inside the electrical antenna. It receives and runs the control commands from the base station and drives the stepper motor. The stepper motor drives the phase shifter inside the antenna device, and the phase shifter adjusts the antenna tilt. Interface RS485 functions as the control interface of the RCU.

l The SBT (Smart Bias-Tee) provides DC power supply and control commands through the feeder for the RCU. The SBT is installed on the RET antenna side. The SBT provides the following functions:

p The SBT converts the control commands that are modulated with OOK by the feeder into the RS485 signals and transfers the signals to the RCU.

p The SBT converts the RS485 signals from the RCU into OOK signals and transfers the signals to the feeder.

p The SBT divides and sends the RF signals and control signals from the feeder to the antenna and the RCU.

p The SBT transmits the direct current from the feeder to the RCU.

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l To meet requirements in different outdoor environments, multiple cabinets with different functions are provided by Huawei for distributed macro base stations. The


different functions are provided by Huawei for distributed macro base stations. The Advanced Power module with heat exchanger (APM30H) provides space and surge protection and enables power distribution and heat dissipation for the BBU3900 and RFU. The Integrated Battery Backup System with direct ventilation (IBBS200D) and Integrated Battery Backup System with TEC cooler (IBBS200T) provides long-duration backup power for a base station. The Transmission Cabinet of 11 U high with heat exchanger (TMC11H) provides space for customer equipment.


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l The advanced power module APM30 is a power backup system for outdoor applications. It provides the DBS3900 with 48 V DC power and backup batteries. It


applications. It provides the DBS3900 with 48 V DC power and backup batteries. It also provides space for the BBU3900 and customer equipment to facilitate rapid network deployment.

l With -48V 24Ah build-in batteries:5U space

l Without build-in batteries:7U space

l The APM30 can provide the following functions:

p DC power supply

p Battery management

p Power system monitoring

p Power distribution

p Surge protection

p Temperature control

p Power backup

p Accommodation of customer equipment

l The APM30, small and light, can be configured with built-in 24 Ah batteries and dissipates heat using a breathable film and fans. The APM30H can be configured in low-air-quality areas. The APM30H dissipates heat using a heat exchanger and outer and inner air circulation fans.

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l Components in the APM30H cabinet


ModuleOptional orMandatory

Max. Configurati

on per Cabinet

Remarks

1. Fan box Mandatory 1

The fan box is configured with the fan, Hert Power Monitoring Interface unit (HPMI), and Central Monitoring Unit type A (CMUA). It is used to dissipate heat in the cabinet.

2. SLPU Mandatory 2

The Signal Lightning Protection Unit (SLPU) is installed in the top 1 U space of the cabinet, providing protection for trunk signals as a mandatory component. The SLPU is configured with the Universal E1/T1 Lightning Protection unit (UELP) or Universal FE Lightning Protection unit (UFLP). The SLPU is an optional component, which is used to protect monitoring signals, is installed in the 1 U space below the BBU. It contains twoUniversal Signal Lightning Protection unit 2 (USLP2s).

3. PSU (AC/DC)

Mandatory 3 The power supply unit (PSU) converts 110 V/220 V AC power into -48 V DC power.

4. EPS subrack

Mandatory 1

The EPS provides functions of AC and DC power distribution for the cabinet. There are two types ofEPSs, which are used in 110 V AC and 220 V AC power supply scenarios.

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l Components in the IBBS200D cabinet




Max. Configurati

on per Cabinet

Remarks

1. Fan box Mandatory 2The FAN is installed on the front door of the cabinet, dissipating heat in the cabinet.

2. CMUA Mandatory 1The CMUA provides functions of temperature control, Boolean alarm detection, and ELU identification of the cabinet.

3. Powerdistributionbox

Mandatory 1The power distribution box is installed on the upper right of the cabinet, transferring and distributing power to the TEC or fan and to the batteries.

4. Battery Mandatory 8The battery provides long-duration backup power for a base station.

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l Components in the IBBS200T cabinet




Max. Configurati

on per Cabinet

Remarks

1. TEC Mandatory 1

The TEC is installed in the protecting hood for the TEC on the front door of the cabinet. The TEC consists of the TEC module, inner air circulation fan, outer air circulation fan, heat-dissipation piece, and monitoring board.

2. CMUA Mandatory 1The CMUA provides functions of temperature control, Boolean alarm detection, and ELU identification of the cabinet.

3. Powerdistributionbox

Mandatory 1The power distribution box is installed on the upper right of the cabinet, transferring and distributing power to the TEC or fan and to the batteries.

4. Battery Mandatory 8The battery provides long-duration backup power for a base station.

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l The TMC can be configured when more space is required for transmission equipment. The cabinet, used outdoors, is small in size and easy to transport. The TMC dissipates


The cabinet, used outdoors, is small in size and easy to transport. The TMC dissipates heat through a breathable film and fans. The BBU3900 can be installed in the TMC.

l A TMC can provide a maximum of 11 U space for customer equipment.

l TMC11H providing space for the transmission equipment, as shown in A

l TMC11H configured with the BBU3900 in the -48 V DC power supply scenario, as shown in B


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l When long-term power backup is required, the battery cabinet (BBC) can be configured. The cabinet, used outdoors, is small in size and easy to transport. The BBC dissipates


The cabinet, used outdoors, is small in size and easy to transport. The BBC dissipates heat in direct-ventilation mode.

l Configured with built-in battery groups, a BBC can provide a maximum of 48 V DC 184 Ah backup power.

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l It can be installed on the ground.


l It supports the installation of six RRUs.

l The upper and lower adjustable beams on an IFS06 can be moved up and down to fit for heights of RRUs.


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l A x B MHz indicates that an eNodeB is configured with A cells of B MHz bandwidth. xTyR indicates that each cell uses x TX channels and y RX channels. For example, "3 x


xTyR indicates that each cell uses x TX channels and y RX channels. For example, "3 x 10 MHz, 2T2R" indicates that the eNodeB is configured with three cells of 10 MHz bandwidth, and each cell uses two TX channels and two RX channels.


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l Star topology


p Advantage: Each eNodeB is connected directly to the MME through the transport network. Therefore, this simple topology features easy engineering, maintenance, and capacity expansion; Each eNodeB exchanges data with the MME directly. Signals travel through only a few nodes, and therefore network reliability is high

p Disadvantage: Compared with the other two topologies, the star topology requires more transmission resources

l Chain topology & Tree topology

p Advantage: The costs of transmission equipment, engineering, and transport line lease are relatively low

p Disadvantage: Signals travel through many nodes, and therefore network reliability is low. Each lower-level eNodeB occupies some transmission bandwidth of its upper-level eNodeB. Reliability of the upper-level eNodeB affects operation of the lower-level eNodeB.

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l Star topology


p Advantage: This topology features high reliability. Faults in an RRU/RFU or optical cable affect one sector at most. This simple topology facilitates installation and maintenance.

p Disadvantage: Compared with the other two topologies, the star topology requires more transmission resources.

l Chain topology

p Advantage: This topology requires relatively low costs of transmission equipment.

p Disadvantage: Limitations are applied to the number of levels in a chain and the distance between units in a chain; LRRUs in different duplex modes cannot be cascaded in a chain. A faulty LRRU may affect operation of lower-level LRRUs.

p Remarks: Cascading between LRFU and LRRU is not supported. An LRRU chain can contain a maximum of three LRRUs. (Cascading is applicable only when the channel bandwidth is 1.4 MHz, 3 MHz, or 5 MHz.). A chain supports only one rate at a time, because interconnected CPRI ports on two LRRUs in a chain must work at the same rate.

l Tree topology

p Advantage: The ring topology provides high transmission reliability.

p Disadvantage: Limitations are applied to the number of levels in a chain and the distance between units in a chain; LRRUs in different duplex modes cannot be cascaded in a chain. A faulty LRRU may affect operation of lower-level LRRUs.


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Documents

eNodeB LTE TDD V100R004 Product Description ISSUE 1.00