RRU3804 Introduction and Hardware Installation

HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential

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RRU3804 Introduction

HUAWEI TECHNOLOGIES CO., LTD. Page 2Huawei Confidential

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Master the feature of RRU3804 and SRXU

Master the hardware installation method of

RRU3804 and SRXU module

Master the hardware installation method of

cables of RRU3804 and SRXU

Objectives





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« Huawei DBS Hardware Installation »

« RRU3804 User Guide »

Reference





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Chapter 1 The Feature of RRU3804 and SRXUChapter 1 The Feature of RRU3804 and SRXU

Chapter 2 RRU3804 and SRXU Hardware Installation

Chapter 3 Relative Cables Hardware Installation





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DBS3800 Main Product Family Overview

BBU3806: Indoor baseband unit.

BBU3806c:Outdoor baseband unit .

RRU3801C: an outdoor remote radio unit.

RRU3804: an outdoor remote radio unit that is connected to the SRXU supports 4-way RX diversity.

SRXU: an extended RF interface module that provides two RX channels for RF signals.

BBU3806 BBU3806C

Baseband unit Remote radio unit

RRU3804RRU3801C

+

SRXU

HUAWEI TECHNOLOGIES Co., Ltd. Page 6HUAWEI Confidential

Typical DBS3800 Deployment Scenarios

This representative scenarios system consists of:

BBU3806 module

RRU3804 module

Various cables

Antenna and Feeder system

-48V DC power

Power cable

Powercable

Trunk cable

Fiber or CPRI high-speedsignal cable

RF jumper

Antenna

Feeder

RF jumper

A & Fsystem

TMA

RRU3804C

BBU3806

grounding cable

RNC

-48VDC power Grounding

cable

HUAWEI TECHNOLOGIES Co., Ltd. Page 7HUAWEI Confidential

Appearance of RRU3804

Side viewFront view

With housing

Front view

Without housing

Note: With the development of product, there is a little different of housing.





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RRU 3804 Main Function The RRU3804 receives RF signals from the antenna system, down-converts the

RF signals to IF signals, and then transmits them to the BBU or the macro NodeB after amplification, analog-to-digital conversion, digital down-conversion, matched filtering, and Digital Automatic Gain Control (DAGC).

Support 12dB, 24dB gain TMA

RTWP statistic and report

Interference scan function

Standing wave detect and report

Support ASIG (Antenna Interface Standards Group) 2.0

Receiver reference sensitivity typical value -125.5dBm

Intermodulation sensitivity -115dBm

RRU3804 connected to the SRXU supports 4-way RX diversity





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Appearance and Panels of RRU3804





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Ports on the Panels of RRU3804

Items Label Description

Ports at the bottom

RX_IN/OUT Interconnection port between combined cabinets

RET/PWR_SRXU Port for RET antenna /Power output to the SRXU

ANT_TX/RXA Main TX/RX diversity port

ANT_RXB Port for RX diversity

Ports on the cablingcavity

RS485/EXT_ALM Alarm port

CPRI_E Optical ports

CPRI_W

RTN(+) Power supply ports

NEG(-)

PGND Grounding bolt

Difference with RRU3801C





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LEDs on RRU3804----- I

Label Color Status Description

RUN Green ON The module has power input, yet the module is faulty

OFF The module has no power input or is reporting alarms

1s on, 2s off The module is operational

0.5s on, 0.5s off Software is being loaded to the module

ALM Red ON The module is reporting alarms (excluding VSWR-related alarms

OFF The module is operational

TX_ACT Green ON The module is running

OFF No specific meaning





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LEDs on RRU3804----II

Label Color Status Description

VSWR Red ON VSWR-related alarms are reported

OFF No VSWP-related alarm is reported

CPRI_W

Red/green

ON (green) The CPRI link is normal

ON (red) The optical module receives local alarms related to LOS

0.5s ON, 0.5s OFF (red)

The CPRI is out of lock

OFF The optical module is not in position or is powered off

CPRI_E Red/green

ON (green) The CPRI link is normal

ON (red) The optical module receives local alarms related to LOS

0.5s ON, 0.5s OFF (red)

The CPRI is out of lock

OFF The optical module is not in position or is powered off





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RRU3804 Configuration Specification

Cell Description( Sector X Carriers )

Number of RRU Sectors Carriers per Sector TX power/Carrier

1X1, 1X2, 1X3, 1X4 1 1 1,2,3,4 60,30,20,15W

3×1 3 3 1 ≤60W

3×2 3 3 2 ≤30W

3×3 3 3 3 ≤20W

3×4 3 3 4 ≤15W





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Appearance of SRXU

Side viewFront viewWith housing





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Panels of the SRXU





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Ports and LED on the Panels of SRXUItem Label Description

Ports at the bottom

PWR_SRXU Socket for power supply

ANT_RXC Ports for RX diversity

ANT_RXD Ports for RX diversity

RX_IN/OUT Port for interconnection between combined cabins

RET Port for the RET antenna

Ports on the cabling cavity

CPRI_E Optical ports

CPRI_W

LEDS The meaning of LEDs on the SRXU please refer to LEDs on the RRU3804.

Difference with RRU3801C





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RRU Features ComparisonRRU3801C RRU3804

Diversity method Supports 2-way RX diversity Supports 4-way RX diversity with SRXU

Power output 20W or 40W 60W (40% PA efficiency )

Frequency band Band ~Ⅰ ⅦOnly support frequency band :2100MHz Ⅰ(RX:1920~1980MHz; TX:2110~2170 MHz )

CPRI interfaceTwo CPRI interfaces

Support 1.25G Single-mode

Two CPRI interfaces

1.25G multi-mode 10km

1.25G Single-mode 40km

Voltage Support 220VAC and -48V DC input

Support -48V DC input only

Input interface should be OT terminal

The data configuration and software downloading steps are almost same





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RRU Specification ComparisonRRU3801C RRU3804 SRXU

Dimension(W×D×H)

380mm×200mm×610mm (including housing)

280mm×155mm×488mm(including the mounting plate and housing)

260 mm x 60 mm x 480 mm

Weight ≤20kg module≤15kg

module +housing≤16kg ≤6 kg

Power consumption

240W 280W 30 W





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Chapter 1 The Feature of RRU3804 and SRXU

Chapter 2 RRU3804 and SRXU Hardware InstallationChapter 2 RRU3804 and SRXU Hardware Installation

Chapter 3 Relative Cables Hardware Installation





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2.1 Hardware Installation Overview2.1 Hardware Installation Overview

2.2 RRU3804 Installation

2.3 SRXU Installation

2.4 RRU 3804 and SRXU Cable Installation





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Hardware Installation Scenario Overview

Single module installation Two modules installation

Three modules installation

+





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Space Requirements of the RRU3804 /SRXU Space Requirements of OneRRU3804 with and Without the SRXU

Space Requirements of Multiple RRU3804s with and Without the SRXUs.

Recommended space requirements

minimal space requirements





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Hardware Installation Comparison

Installation way

40W RRU3801C RRU3804

Single installation

Cabin +housing;Distance between hole center 210*378M10*75 bolt

Mounting plate +housing; Distance between hole center 210*270M10*75 bolt

Centralized installation

3 RRU cabins;Distance between hole center 210*378M10*75 bolt

3*(mounting plate +housing);Distance between hole center 210*270M10*75 bolt





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Cable and Structure Comparison

Item 40W RRU3801C RRU3804 Remark

Installation piece Single cabin and 3 RRU cabins Mounting plate The distance between hole

center:210*378 210*270

CPRI N/A N/A Cabling cavity, SFP

Power cable Bottom 、 aviation headCabling cavity 、 OT terminal

Can modify on site

RF N/A N/A bottom 、 DIN

AISG N/A N/A Bottom, waterproof DB9

Combined cabin N/A N/A Bottom, water proofDB9

Alarm cable 4 trunk nodes 、 DB15

1 485 or 1 trunk node 、 DB9 ， don’t support all at same time

All in cabling cavity

Grounding line N/A N/A Support two hole





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Replacing RRU3801C

RRU3804 can share installation hole for replacing RRU3801C





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2.1 Hardware Installation Overview








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RRU3804 Installation

RRU 3804 hardware installation consists of:

Installing a single RRU3804

Installing two RRU3804s

Installing three RRU3804s





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1

2

3


Scenario 1 the mounting plate of the single RRU3804 on the metal pole

Installing a Single RRU3804





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4 5





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6 7





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Scenario 2 installing the mounting plate of the single RRU3804 on the wall

RRU3804 Installation Installing a Single RRU3804

1 2 3





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Scenario 3 installing the single RRU3804 module

RRU3804 Installation Installing a Single RRU3804

1 2 3

M6X20





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RRU3804 Installation Installing two RRU3804s

Scenario1 installing the mounting plate of the two RRU3804 on the metal pole

1 2 3





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Scenario 1 installing the mounting plate of the two RRU3804 on the metal pole


4 56





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Scenario 2 installing the mounting plate of the two RRU3804 on the wall


1

2

3 4





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Scenario 3 installing the two RRU3804 modules

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3

2






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4 5 6






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Scenario 1 installing the mounting plate of the three RRU3804 on the metal pole

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2

3 4






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Scenario 1 installing the mounting plate of the three RRU3804 on the metal pole

5 6






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Scenario 2 installing the mounting plate of the three RRU3804 on the wall

1

2

3






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5 64

Scenario 2 installing the mounting plate of the three RRU3804 on the wall






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Scenario 3 installing the three RRU3804 modules


1 23





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SRXU installation

SRXU hardware installation consists of:

Installing the SRXU on a single RRU3804

Installing the SRXUs on the two RRU3804s

Installing the SRXUs on the three RRU3804s





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SRXU Installation Installing the SRXU on a single RRU3804

1 2 3





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SRXU Installation Installing the SRXU on a single RRU3804

4 5





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SRXU installation Installing the SRXUs on the two RRU3804s

Side-mounted installationScenario 1

1 2





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SRXU installation Installing the SRXUs on the two RRU3804s

Side-mounted installationScenario 1

3 4 5





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SRXU Installation Installing the SRXUs on the two RRU3804s

Rear-mounted installationScenario 1

1 2





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SRXU installation Installing the SRXUs on the three RRU3804s

12





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SRXU Installation Installing the SRXUs on the three RRU3804s

3 4





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Installing the PGND cable of RRU3804/SRXU Connecting the PGND cable (only RRU3804 is installed)

PGND

The green and yellow PGND cable is a single cable with a

cross-sectional area of 16 mm2. Both ends of the cable are

OT terminals to connect to the grounding bolt on the RRU3804

module. If you prepare the cable by yourself, it is

recommended to use a copper-based cable with a minimum

cross-sectional area of 16 mm2.





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Installing the PGND cable of RRU3804/SRXU Connecting the PGND cable (both RRU3804 and the SRXU are installed)

Connect a PGND cable between the RRU3804 and

the SRXU. Then connect one of the OT terminal on

the other PGND cable to the grounding bolt on the

RRU3804 module.





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Installing the Power Cable of RRU3804

Step 1: Route the power cable. One end of the cable is two OT terminals, and the other end is bare. The OT terminals need to be made on site.

RRU3804/SRXU only support the -48V DC power cable





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Installing the Power Cable of RRU3804Step 2: Add two OT terminals to one end of the power cable

C. Add an OT terminals to each wire

D. Remove about 15mm jacket from the power cable

A. Determine l the lengths of power cable for different operation according to the scales on the cover plate of the cabling cavity as shown:

B. Based on the determined lengths, remove the jacket and shielding layer from the power cable. Then remove the jacket of a specified length from each wire.





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Installing the Power Cable of RRU3804Step 3: Remove the waterproof fillers from the cable troughs of the cabling cavity. Route the power cable along its dedicated cable trough.





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Installing the Power Cable of RRU3804Step 4: Open the cover over the terminals for the power cable





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Installing the Power Cable of RRU3804Step 5 :Remove the screw on the strap labeled PGND.Step 6 :Press the strap on the exposed shielding layer of the power cable, then tighten the screw.Step 7 :Connect the OT terminal on the blue -48V DC wire to the terminal labeled NEG(-). Connect the OT terminal on the black or brown GND wire to the terminal labeled RTN(+). Then tight the screw.Step 8 :Close the cover. Step 9 :Bind the -48V DC power cable to the binding slot in the lower angle piece.





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Installing the Power Cable of RRU3804Step 10:Connect the other end of the power cable grounding.

a. Remove about 50mm jacket from the power cable.b. Twist the shielding layer of the power cable into one strand, and then wrap the strand with heat- shrinkable tube of Ф5.

C. Add a OT terminal to the other end of the PGND cable.

d. Wrap the power cable with the heat-shrinkable tube of Ф14 at the point where the shielding layer is removed .

f. Connect the PGND cable to the shielding grounding bar of power supply equipment.

g. Add OT terminals to the blue –48 V wire and the black GND wire, and then connect the OT terminals to the wiring terminals on the power supply.





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Installing the Power Cable of RRU3804Step 11: Check whether the power cable of the SRXU needs to be installed.

Condition ActionThe SRXU is installed. Go to step 12 to install the power cable of the

SRXU.No SRXU is installed. Go to step 14.

Step 12: Fix the waterproof DB9 connector at one end of the SRXU power cable to the RET/PWR_SRXU port at the bottom of the RRU3804.

Step 13: Fix the waterproof B9 connector at the other end of the SRXU power cable to the PWR_SRXU port at the bottom of the SRXU.

Step 14: Label the power cable .

The rest cables installation refers to related contents of RRU3801C.





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Installing the Power Cable of SRXU The SRXU uses a shielded DC power cable.

The cable feeds power from the RRU3804 to the SRXU.

The cable has a waterproof DB9 connector at each end.

One end of the DC power cable is connected to the RET/PWR_SRXU port at the bottom

of the RRU3804, and the other end is connected to the PWR_SRXU socket at the bottom

of the SRXU.





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Installing the Optical Cable of RRU3804/SRXU BBU3806-RRU3804/SRXU CPRI Optical CableThe CPRI optical cable transmits CPRI signals:

• between BBU3806 and RRU3801C,

• between BBU3806 and RRU3804

• between RRU3804 and SRXU.The CPRI optical cable is a multi-mode 2-wire

cable with DLC connectors at both ends.BBU and RRU CPRI hardware connection is

same between RRU3801C and RRU3804





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AISG Multi-Wire Cables of RRU3804/SRXU

The five-meter-long AISG multi-wire cable connects the RRU3804/SRXU to the Remote Control Unit (RCU). If both RRU3804 and SRXU are installed, the AISG multi-wire cable only connects the SRXU and the RCU. This cable is optional.

One end of the AISG multi-wire cable is a waterproof DB9 connector, and the other end is a standard AISG female connector





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AISG Extension Cable of the RRU3804/SRXU

When the distance between the RCU and the RRU3804/SRXU is longer than 5 m, the AISG multi-wire cable is not long enough to cover the distance and the AISG extension cable is used. The AISG extension cable is 15 m long.

One end of the AISG extension cable is a standard AISG male connector, and the other end is a standard AISG female connector





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RF Jumper of the RRU3804/SRXU The RF jumper of the RRU3804/SRXU is of two types

Antenna jumper: transmits and receives RF signals. Both ends of the antenna jumper have DIN connectors.

Interconnect jumper: transmits RF signals between two RRU3804s/SRXUs.

The interconnect jumper is optional, depending on the site configuration. The interconnect jumper is 2 m long, and both ends have 2W2 connectors

The 2W2 connectors at the two ends of the interconnect jumper are linked to the ports labeled RX_IN/OUT on two RRU3804s/SRXUs respectively

Waterproofed Joints





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Boolean/RS485 Input Cable of the RRU3804 The cable transmits the 2-channel Boolean alarm signals and 1-channel

RS485 signals from external devices to the RRU3804. Thus, the external signals are monitored.

One end of the cable has a DB15 female connector, and the other end has eight cord end terminals. If the cord end terminals of the cable do no match the ports on the external devices, cut off the cord end terminals and make proper terminals on site.





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Cable Connections of one RRU3804





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Cable Connections of one RRU3804 /SRXU





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Cable Connections of Multiple RRU3804s

Optical cable

Power cable





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Cable Connections of Multiple RRU3804s/SRXUs

Optical cablePower cable

Power cable

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Documents

RRU3804 Introduction and Hardware Installation