Lte Bbu 3900 English Huawei

eLTE3.1 DBS3900 LTE FDD

Product Description

Issue 01

Date 2013-06-30

Huawei Technologies Co., Ltd.

Issue 01 (2013-06-30) Huawei Proprietary and Confidential

Copyright © Huawei Technologies Co.,

Ltd.

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Copyright © Huawei Technologies Co., Ltd. 2013. All rights reserved.

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Notice

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Huawei Technologies Co., Ltd.

Address: Huawei Industrial Base

Bantian, Longgang

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People's Republic of China

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Email: [email protected]

http://www.huawei.com/

mailto:[email protected]


Product Description Contents

Issue 01 (2013-06-30) ii

Contents

1 Introduction ......................................................................................................................... 1

1.1 Overview .......................................................................................................................................................... 1

1.2 Benefits ............................................................................................................................................................. 2

2 Architecture .......................................................................................................................... 4

2.1 Overview .......................................................................................................................................................... 4

2.2 Basic Modules .................................................................................................................................................. 4

2.2.1 BBU3900 ....................................................................................................................................................... 4

2.2.2 RRU ............................................................................................................................................................... 6

2.3 DBS3900 .......................................................................................................................................................... 9

2.3.1 Typical Installation Scenarios ........................................................................................................................ 9

2.3.2 APM30H ...................................................................................................................................................... 10

2.3.3 TP48200B Power Cabinet ........................................................................................................................... 11

2.3.4 Indoor Mini Box .......................................................................................................................................... 12

2.3.5 Outdoor Mini Box ....................................................................................................................................... 12

2.3.6 Typical Configuration of the DBS3900 ....................................................................................................... 13

3 Operation and Maintenance ........................................................................................... 14

3.1 Overview ........................................................................................................................................................ 14

3.2 OM System ..................................................................................................................................................... 14

4 Technical Specifications .................................................................................................. 16

4.1 Capacity specifications ................................................................................................................................... 16

4.2 Input Power Specifications ............................................................................................................................. 17

4.3 Equipment Specifications ............................................................................................................................... 17

4.4 Environment Specifications ............................................................................................................................ 18

4.5 Reliability ....................................................................................................................................................... 18

4.6 Standards ........................................................................................................................................................ 19


Product Description 1 Introduction

Issue 01 (2013-06-30) 1

1 Introduction

Long Term Evolution (LTE) is an evolved telecom standard. It provides various

technical benefits to Evolved Universal Terrestrial Radio Access Network (E-UTRAN),

including:

Reduced service delay

Higher user data rates

Increased spectral efficiency

Optimized support for packet services

Improved system capacity and coverage

eLTE is an enhanced broadband solution based on LTE. eLTE frequency division

duplex (FDD) base stations support broadband trunking communication. eLTE has

flexible bandwidths, enhanced modulation schemes, effective scheduling, and support

for trunking communication.

1.1 Overview

Focusing on customer-oriented innovation, the DBS3900 LTE FDD base station

(referred to as the DBS3900 eNodeB in this document) fully utilize Huawei platform

resources and use a variety of technologies to meet the challenges of mobile network

development.

The E-UTRAN NodeB (eNodeB) is used for radio access in the LTE system. The

eNodeB mainly performs Radio Resource Management (RRM) functions such as air

interface management, access control, mobility control, and User Equipment (UE)

resource allocation. Multiple eNodeBs constitute an E-UTRAN system.

The basic modules of a DBS3900 eNodeB consist of baseband units (BBUs) and RF

modules. By a flexible combination of basic modules, the DBS3900 eNodeB can

accommodate to different capacities and application scenarios. The DBS3900 eNodeB

features a small size, low power consumption, flexible installation, and fast site

deployment. Figure 1-1Figure 1-1 shows the DBS3900 eNodeB.



Issue 01 (2013-06-30) 2

Figure 1-1 DBS3900 eNodeB

In a typical installation scenario, BBUs are placed in an APM30H cabinet.

1.2 Benefits

Diverse Usage Scenarios and RF Module Types for Different Wireless Network Requirements

The DBS3900 eNodeB supports main LTE FDD frequency bands and the exclusive

800 MHz band of the industry. The RF module provides at least two TX channels and

two RX channels (2T2R). The modules support main LTE FDD frequency bands and

the minimum requirement of 2 x 2 uplink and downlink multiple-input multiple-output

(MIMO). RF modules are also characterized by their support for various bandwidths,

great TX power, and high power amplification efficiency.

Flexible Installation for Fast Network Deployment with a Low TCO Flexible installation of the DBS3900 eNodeB simplifies site acquisition and

achieves fast network deployment with a low total cost of ownership (TCO). The

BBU3900, a baseband unit, can be installed on an indoor wall or in a standard

cabinet. This reduces the installation investment. The RRU can be mounted onto

a pole, tower, or concrete wall. Flexible installation locations and low space

requirements reduce site lease costs. The RRU can also be installed close to the

antenna system to reduce the cost of feeders and power consumption.

The DBS3900 eNodeB supports IP-based network modification and provides

plenty of transmission ports. It uses various QoS mechanisms to meet QoS goals.

In addition, it provides the highest possible capacity, enhanced stability, and

reduced system delay to ensure the achievement of differentiated services and

QoS requirements. The DBS3900 eNodeB supports multiple types of trunking communication,

NOTE



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including PTT group calling, point-to-point calling, and broadcasting.


Product Description 2 Architecture

Issue 01 (2013-06-30) 4

2 Architecture

2.1 Overview

With a distributed architecture, the DBS3900 eNodeB consists of two basic modules:

the BBU and the remote radio unit (RRU). To meet the requirements for radio network

deployment, the BBU and RRUs are connected using fiber optic cables through

common public radio interface (CPRI) ports to transmit CPRI signals.

The DBS3900 eNodeB uses the Advance Power Module with Heat-exchanger Cooler

(APM30H), Telecom Power (TP48200B), Indoor Mini Box (IMB03), and Outdoor

Mini Box (OMB). Through a flexible combination of the two modules and the cabinets,

DBS3900 eNodeBs help to provide diverse site solutions according to different

requirements.

2.2 Basic Modules

2.2.1 BBU3900

The BBU3900, a baseband unit, performs the following functions:

Provides S1 interfaces for connection to the Mobility Management Entity (MME)

or Serving Gateway (S-GW).

Provides CPRI ports for communication with the RRUs/RFUs and processes

uplink and downlink baseband signals.

Manages the entire eNodeB by means of operation and maintenance (OM) and

signaling message processing.

Provides an OM channel towards the local maintenance terminal (LMT) and

Operation and Maintenance Center (eOMC910).

Provides clock ports for clock synchronization, alarm monitoring ports for

environment monitoring, and a Universal Serial Bus (USB) port for

commissioning using a USB storage device.

Figure 2-1 shows the slot layout of a BBU3900.

Figure 2-1 Slot layout of a BBU3900



Issue 01 (2013-06-30) 5

1. Appearance of the BBU3900

With a box structure, a BBU3900 occupies only a space of 19-inch wide and 2-U high.

Figure 2-2Figure 2-2 shows a BBU3900.

Figure 2-2 Appearance of a BBU3900

2. BBU3900 boards and their functions

Mandatory boards and modules of the BBU3900 include:

LTE main processing and transmission unit (LMPT): manages the entire eNodeB

by means of operation and maintenance (OM) and signaling message processing,

and provides system clock for the BBU3900.

LTE baseband processing unit (LBBP): processes baseband signals and CPRI

signals.

Fan unit (FAN): controls the rotation speed of fans and monitors the temperature

of the BBU. It dissipates heat from the BBU.

Universal power and environment interface unit (UPEU): converts -48 V DC

input power into +12 V DC power. It also provides two RS485 signal ports, each

transmitting one RS485 signal, and two Boolean signal ports, each transmitting

four Boolean signals.

Figure 2-3 shows the typical configuration of the BBU3900.

Figure 2-3 Typical configuration of the BBU3900

3. BBU3900 physical ports

Table 2-1 describes major ports on BBU3900.



Issue 01 (2013-06-30) 6

Table 2-1 Physical ports on BBU3900

Board/Module Port Quantity Connector Function

LMPT FE/GE0 1 RJ45 FE/GE electrical port.

Reserved.

SFP0 1 SFP FE/GE optical port.

Vacant.

FE/GE1 1 RJ45 Electrical port,

connected to the

transport network or

core network.

FE/GE1 and SFP1

cannot be used

simultaneously.

SFP1 1 SFP Optical port,

connected to the

transport network or

core network.

FE/GE1 and SFP1

cannot be used

simultaneously.

USB port 1 USB Loads software.

TST port 1 USB For testing.

ETH 1 RJ45 For local maintenance

and debugging.

GPS port 1 SMA Connects to the GPS

antenna.

LBBPd2 CPRI port 6 SFP Connects the BBU

and RRU.

UPEUc Power

supply

socket

1 3V3 For -48 V DC power

input.

MON0 1 RJ45 Provides two RS485

signal inputs, and

connects to external

monitoring devices.

MON1 1 RJ45

EXT-ALM0 1 RJ45 Provides eight dry

contact alarm inputs,

and connects to

external alarm

devices.

EXT-ALM1 1 RJ45

2.2.2 RRU

An RRU is a remote radio unit. One or more RRUs constitute the RF part of a

distributed eNodeB. RRUs can be installed on a pole, wall, or stand. They can also be



Issue 01 (2013-06-30) 7

installed close to antennas to shorten the feeder length, reduce feeder loss, and

improve system coverage. RRUs modulate and demodulate baseband signals and RF

signals, process data, amplify power, and detect standing waves.

To accommodate different application scenarios, eLTE solution provides the following

RRU product:

RRU3222: operates at 800 MHz (band 20) with two RF channels, and applies to

outdoor eNodeBs that operate at the 800 MHz frequency band.

Figure 2-4 shows the RRU3222.

Figure 2-4 Appearance of the RRU3222

For the specifications and parameters of this type of RRU, see the product description of the

RRU.

NOTE



Issue 01 (2013-06-30) 8

Figure 2-5 Physical ports on the RRU3222

Table 2-2 Physical ports on the RRU3222

Port Type Connector Quan

tity Description

Power supply socket

Tool-less male

connector (pressfit

type)

1 Inputs -48 V DC power.

CPRI port DLC 2 Connects to BBU3900, or to

another RRU for cascading.

RF port DIN female

connector 2

Connects to the antenna

system.

RET port QDB9 1 Connects to the RCU.

Alarm port DB15 1 Inputs alarm signals from

external devices.



Issue 01 (2013-06-30) 9

2.3 DBS3900 The DBS3900 facilitates site acquisition as well as network planning and optimization,

and reduces network deployment time. It enables operators to efficiently deploy a

high-performance network with a low total cost of ownership (TCO) by minimizing

investment in electricity, space, and manpower.

The DBS3900 consists of the BBU3900 and RRUs. The BBU3900 is characterized by

its small footprint, easy installation, and low power consumption. Therefore, the

BBU3900 can be easily installed in a spare space at an existing site. The RRU is also

compact and light. It can be installed close to an antenna to reduce feeder loss and to

improve system coverage.

The DBS3900 typically uses the APM30H power cabinet.

2.3.1 Typical Installation Scenarios

The DBS3900 answers to scenarios where the operator has difficulties in site

acquisition and needs to build a network fast and economically. It enables operators to

efficiently deploy a high-performance network with a low TCO by minimizing

investment in electricity, space, and manpower.

Typical installation scenarios for the DBS3900 are classified into outdoor and indoor

installation scenarios, as shown in Figure 2-6 and Figure 2-7.

Figure 2-6 Typical outdoor installation scenario for the DBS3900

If the DBS3900 is deployed outdoors, the BBU3900 can be installed in an APM30H or

OMB. The APM30H or OMB provides installation space and outdoor protection for

the BBU3900, and supplies -48 V DC power to the BBU3900 and RRUs.

NOTE



Issue 01 (2013-06-30) 10

Figure 2-7 Typical indoor installation scenario for the DBS3900

If the DBS3900 is deployed indoors, the BBU3900 can be installed on a 19-inch

cabinet or rack, Indoor Centralized Rack (ICR), or IMB03. The BBU3900 can also be

installed on the wall to share the power supply system and the transmission system in

the existing network.

The ICR provides a baseband rack for installing the BBU3900 and an RF rack for

installing a maximum of six RRUs in a centralized manner.

2.3.2 APM30H

The APM30H is an outdoor integrated power system with heat exchangers. It provides

DC power for the DBS3900 and uses batteries for backup power. It also provides

installation space for the BBU3900 and customer equipment.

The APM30H is characterized by its compactness and light weight, and can be

installed on the ground. Figure 2-8 shows the internal structure of the APM30H.

Figure 2-8 Internal structure of the APM30H



Issue 01 (2013-06-30) 11

The power supply unit (PSU) converts +24 V DC power into -48 V DC, 110 V AC, or 220 V AC

power.

The power monitoring unit (PMU) manages the power system, monitors power distribution, and

reports alarms.

2.3.3 TP48200B Power Cabinet

The TP48200B is an indoor AC/DC power system that uses 48 V/50 A PSUs. This

cabinet provides stable DC power for communication devices operating under -48 V

and manages batteries properly. By adjusting the number of PSUs, the TP48200B

adapts to various indoor scenarios.

When the BBU needs to be installed inside a cabinet and the customer only provides

AC power, the TP48200B can be used to provide DC power for the BBU and RRUs. A

maximum of two battery packs (up to 150 AH for each) can be housed inside this

cabinet.

The TP48200B power system consists of the cabinet, PSUs, PMU, power distribution

unit (PDU), space reserved for customer equipment, and batteries. The dimensions (W

x D x H) of the TP48200B are: 600 mm × 600 mm × 2000 mm. Figure 2-9 shows the

appearance and internal structure of the TP48200B.

The cabinet has a protection level of IP20, and supports installation on the ground and

operation from the front.

Figure 2-9 Appearance and internal structure of TP48200B

1

2

3

4

(1)PDU (2)PMU (3)PSU

(4)Battery

NOTE



Issue 01 (2013-06-30) 12

2.3.4 Indoor Mini Box

If an indoor site for the DBS3900 has an AC or -48 V DC power supply available, an

IMB03 can be used. It provides a 3 U space for installing the BBU3900 and power

equipment. The power equipment may be AC/DC power equipment, DCDU, or others.

The IMB03 is characterized by its flexible installation, satisfactory heat dissipation,

and easy cabling. It can be supplied with DC or AC power. Figure 2-10 shows the

interiors of the IMB03.

Figure 2-10 Interiors of the IMB03

2.3.5 Outdoor Mini Box

The OMB is also called the outdoor BBU subrack. If an outdoor site for the DBS3900

has an AC or -48 V DC power supply available, an OMB can be used. It provides a 3

U space for installing the BBU3900 and other equipment. Other equipment may be

AC/DC power equipment, DCDU, or transmission equipment.

The OMB is characterized by its easy cabling, protection against water, dust, and

sunlight, and proper grounding. It can be easily installed and maintained. The OMB

can be supplied with DC or AC power. Figure 2-11 shows the interiors of the OMB.



Issue 01 (2013-06-30) 13

Figure 2-11 Interiors of the OMB

2.3.6 Typical Configuration of the DBS3900

Table 2-3 Typical configuration of the DBS3900

Sector

Configuration MIMO Quantity of LBBPs Quantity of

RRUs

3 × 10 MHz 2 × 2 MIMO 1 LBBP 3 RRUs

3 × 20 MHz 2 × 2 MIMO 1 LBBP 3 RRUs


Product Description 3 Operation and Maintenance

Issue 01 (2013-06-30) 14

3 Operation and Maintenance

3.1 Overview

The eNodeB supports the OM system that is based on the man-machine language

(MML) and the Graphical User Interface (GUI). The OM system enables a

hardware-independent OM mechanism and provides powerful OM functions to meet

various OM requirements.

The eNodeB supports local maintenance and remote maintenance. In the OM system,

the maintenance terminal supports the Virtual Local Area Network (VLAN), and can

access the eNodeB using the Intranet or Internet, which makes maintenance more

convenient and flexible.

3.2 OM System

Figure 3-1 shows the OM system of the eNodeB.

Figure 3-1 OM system

The OM system consists of the LMT and the eOMC. The LMT is used to maintain a

single eNodeB. To perform maintenance operations, you can connect the LMT to the

eNodeB by using an Ethernet cable (local maintenance) or IP network (remote

maintenance). The eOMC, a mobile element management system provided by Huawei,

is used to remotely maintain multiple eNodeBs of different software versions.


Product Description 3 Operation and Maintenance

Issue 01 (2013-06-30) 15

The functions of the OM system are as follows:

The LMT performs functions such as data configuration, alarm monitoring,

commissioning, and software upgrade. The LMT supports both MML and GUI

modes.

The eOMC performs functions such as data configuration, alarm monitoring,

performance monitoring, and software upgrade. The eOMC supports both MML

and GUI modes


Product Description 4 Technical Specifications

Issue 01 (2013-06-30) 16

4 Technical Specifications

4.1 Capacity specifications

Table 4-1 Capacity specifications

Item Value

Maximum throughput per

cell (20 MHz)

Downlink data rate at the MAC layer: 149 Mbit/s (2 x

2 MIMO, 64 QAM)

Uplink data rate at the MAC layer: 49 Mbit/s (1 x 2

MIMO, 64 QAM)

Maximum throughput per

eNodeB (packet size: 550

bytes)

LMPT:

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

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

Maximum number of

UEs in

RRC_CONNECTED

mode per eNodeB

(1LBBPd2)

1200 (with 5 MHz bandwidth)

2400 (with 10 MHz/20 MHz bandwidth)

Maximum number of

UEs in

RRC_CONNECTED

mode per eNodeB

(3LBBPd2)

3600 (with 5 MHz/10 MHz/20 MHz bandwidth)

Maximum number of

groups per eNodeB

240

Maximum number of

groups per cell

75 (voice code rate: 12.2 kbit/s, bandwidth: 5 MHz

200 (voice code rate: 12.2 kbit/s, bandwidth: 10

MHz/20 MHz


MHz


MHz/20 MHz

Maximum throughout per

LBBP

LBBPd2: 447 Mbit/s in the downlink; 147 Mbit/s in

the uplink (by AES encryption)

Number of data radio

bearers (DRBs)

8 DRBs per UE



Issue 01 (2013-06-30) 17

Item Value

Maximum distance from

the RRU

20 km

The above group-related specifics are only for reference, which may be updated later

based on the measurement result.

4.2 Input Power Specifications

Table 4-2 Input power

Base Station Input Power

DBS3900 APM30H:

− -48 V DC; voltage range: -57 V DC to -38.4 V DC

− 110 V AC; voltage range: 90 V AC to 135 V AC

− 220 V AC; voltage range: 176 V AC to 280 V AC

BBU3900:

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

RRU:

-48 V DC; voltage range: -57 V DC to -36 V DC

4.3 Equipment Specifications

Table 4-3 Equipment specifications

Item Base Station Specification

Dimensions

(H x W x D)

DBS3900 APM30H: 700 mm x 600 mm x 480 mm

Weight DBS3900 (AC) ≤ 68 kg (empty cabinet, APM30H)

≤ 87 kg (full configuration, APM30H

(Ver.B)/APM30H (Ver.C))

≤ 90 kg (full configuration, APM30H

(Ver.D))

NOTE



Issue 01 (2013-06-30) 18

4.4 Environment Specifications

Table 4-4 Environment specifications

Item Base Station Specification

Operating

temperature

DBS3900 APM30H:

-40°C to +50°C (long term)

+50°C to +55°C (short term)

BBU3900:

-20°C to +50°C (long term)

+50°C to +55°C (short term)

RRU:

-40℃ to +50℃ (with solar radiation of 1120 W/m²)

-40℃ to +55℃ (without solar radiation)

Relative

humidity

DBS3900 APM30H: 5% RH to 100% RH

BBU3900: 5% RH to 95% RH

RRU: 5% RH to 100% RH

Atmospheri

c pressure

70 kPa to 106 kPa

In Table 4-4, "short term" means continuous operation for not more than 72 hours or

accumulated operation of no more than 15 days a year.

4.5 Reliability

Table 4-5 Reliability KPIs

Item KPIs

System availability ≥ 99.999%

Mean time between failures of the

system (MTBF)

≥ 155,000 hours

Mean time to repair the system

(MTTR) ≤ 1hour

Time of system restart < 450s

NOTE



Issue 01 (2013-06-30) 19

4.6 Standards

Table 4-6 Standards

Item Specification

Storage ETSI EN300019-1-1 V2.1.4 (2003-04) class1.2

"Weatherprotected, not temperature-controlled storage

locations"

Transportation ETSI EN300019-1-2 V2.1.4 (2003-04) class 2.3 "Public

transportation"

Anti-seismic

performance

IEC 60068-2-57 (1999-11) Environmental testing – Part 2-57:

Tests – Test Ff: Vibration – Time-history method

YD5083-99: Interim Provisions for Test of Anti-seismic

Performances of Telecommunications Equipment (telecom

industry standard in People's Republic of China)

EMC The eNodeB meets the electromagnetic compatibility (EMC)

requirements and complies with the following standards:

R&TTE Directive 1999/5/EC

R&TTE Directive 89/336/EEC

3GPP TS 36.113

ETSI EN 301489-1/23

ETSI EN 301908-1 V2.2.1 (2003-10)

ITU-R SM.329-10

The eNodeB has been certified by European standards.


Product Description A Acronyms and Abbreviations

Issue 01 (2013-06-30) .

20

A Acronyms and Abbreviations

3

3GPP 3rd Generation Partnership Project

3m Multi-carrier, Multi-mode, and MIMO

A

AC Alternating Current

APM Advanced Power Module

B

BBU Baseband Unit

BTS Base Transceiver Station

C

CCU Cabinet Control Unit

CMUA Central Monitoring Unit Type A

CMUE Central Monitoring Unit Type E

CPRI Common Public Radio Interface

CRFUd CDMA Radio Frequency Unit Type D

D

DBS Distribution Base Station



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21

DC Direct Current

DCDU Direct Current Distribution Unit

E

E-UTRAN Evolved Universal Terrestrial Radio Access Network

EMC Electro Magnetic Compatibility

EMUA Environment Monitoring Unit Type A

eNodeB E-UTRAN NodeB

EPS Embedded Power Supply System

EPU Embedded Power subrack Unit

ETP Embedded Telecommunication Power

ETSI European Telecommunications Standards Institute

FDD Frequency Division Duplex

G

GSM Global System for Mobile Communications

GUI Graphical User Interface

H

HAU Heater Assembly Unit

HEX Heat EXchanger

I

IBBS Integrated Backup Battery System

ICR Indoor CentralizedRack

IMB Indoor Mini Box

L

LBBP LTE Baseband Processing Unit

LMT Local Maintenance Terminal



Issue 01 (2013-06-30) .

22

LRFU LTE Radio Frequency Unit

LRFUe LTE Radio Frequency Unit Type E

LTE Long Term Evolution

M

MIMO Multi-Input and Multi-Output

MME Mobility Management Entity

MML Man Machine Language

MRFU Multi-Mode Radio Frequency Unit

MRFUd Multi-Mode Radio Frequency Unit Type D

MTBF Mean Time between Failures of the System

MTTR Mean Time to Repair the System

O

OMB Outdoor Mini Box

P

PDU Power Distribution Unit

PMU Power Monitoring Unit

PSU Power Supply Unit

R

RF Radio Frequency

RFC Radio Frequency Cabinet

RFU Radio Frequency Unit

RH Relative Humidity

RRU Remote Radio Unit

S

S-GW Serving GateWay



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23

SLPU Signal Lightning Protection Unit

SDR Software-Defined Radio

T

TCO Total Cost of Ownership

TEC Thermoelectric Cooling Unit

TMC Transmission Cabinet

U

UMTS Universal Mobile Telecommunications System

USB Universal Serial Bus

V

VLAN Virtual Local Area Network

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