Huawei Airbridge DBS3900 Guide

DBS3900
V100R005C00
RRU3252/RRU3256 Hardware
Description
Issue Draft A
Date 2012-11-30
HUAWEI TECHNOLOGIES CO., LTD.

Copyright © Huawei Technologies Co., Ltd. 2012. All rights reserved.
No part of this document may be reproduced or transmitted in any form or by any means without prior written
consent of Huawei Technologies Co., Ltd.
Trademarks and Permissions
and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.
All other trademarks and trade names mentioned in this document are the property of their respective holders.
Notice
The purchased products, services and features are stipulated by the contract made between Huawei and the
customer. All or part of the products, services and features described in this document may not be within the
purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information,
and recommendations in this document are provided "AS IS" without warranties, guarantees or representations
of any kind, either express or implied.
The information in this document is subject to change without notice. Every effort has been made in the
preparation of this document to ensure accuracy of the contents, but all statements, information, and
recommendations in this document do not constitute a warranty of any kind, express or implied.
Huawei Technologies Co., Ltd.
Address: Huawei Industrial Base
Bantian, Longgang
Shenzhen 518129
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Website: http://www.huawei.com
Email: [email protected]
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About This Document
Purpose
This document provides reference for planning and deploying an RRU3252/RRU3256 (referred
to as RRU in this document). It presents the exterior and describes the ports, functions, cable
types, connector specifications, and cable connections of the RRU.
Product Version
The following table lists the product version related to this document.
Product Name Product Version
DBS3900 LTE TDD V100R005C00 and later versions
Intended Audience
This document is intended for:
lBase station installation engineers
lSystem engineers
lSite maintenance engineers
Organization
1 Change History
This chapter describes changes in the RRU3252/RRU3256 Hardware Description.
2 RRU Introduction
This chapter describes the RRU.
3 RRU Cables
This chapter describes RRU cables.
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4 RRU Auxiliary Devices
This chapter describes remote radio unit (RRU) auxiliary devices.
Conventions
Symbol Conventions
The symbols that may be found in this document are defined as follows.
Symbol Description
Indicates a hazard with a high level of risk, which if not
avoided, will result in death or serious injury.
Indicates a hazard with a medium or low level of risk, which
if not avoided, could result in minor or moderate injury.
Indicates a potentially hazardous situation, which if not
avoided, could result in equipment damage, data loss,
performance degradation, or unexpected results.
Indicates a tip that may help you solve a problem or save
time.
Provides additional information to emphasize or supplement
important points of the main text.
General Conventions
The general conventions that may be found in this document are defined as follows.
Convention Description
Times New Roman Normal paragraphs are in Times New Roman.
Boldface Names of files, directories, folders, and users are in
boldface. For example, log in as user root.
Italic Book titles are in italics.
Courier New Examples of information displayed on the screen are in
Courier New.
Command Conventions
The command conventions that may be found in this document are defined as follows.
Convention Description
Boldface The keywords of a command line are in boldface.
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Convention Description
Italic Command arguments are in italics.
[ ] Items (keywords or arguments) in brackets [ ] are optional.
{ x | y | ... } Optional items are grouped in braces and separated by
vertical bars. One item is selected.
[ x | y | ... ] Optional items are grouped in brackets and separated by
vertical bars. One item is selected or no item is selected.
{ x | y | ... }*Optional items are grouped in braces and separated by
vertical bars. A minimum of one item or a maximum of all
items can be selected.
[ x | y | ... ]*Optional items are grouped in brackets and separated by
vertical bars. Several items or no item can be selected.
GUI Conventions
The GUI conventions that may be found in this document are defined as follows.
Convention Description
Boldface Buttons, menus, parameters, tabs, window, and dialog titles
are in boldface. For example, click OK.
>Multi-level menus are in boldface and separated by the ">"
signs. For example, choose File > Create > Folder.
Keyboard Operations
The keyboard operations that may be found in this document are defined as follows.
Format Description
Key Press the key. For example, press Enter and press Tab.
Key 1+Key 2 Press the keys concurrently. For example, pressing Ctrl+Alt
+A means the three keys should be pressed concurrently.
Key 1, Key 2 Press the keys in turn. For example, pressing Alt, A means
the two keys should be pressed in turn.
Mouse Operations
The mouse operations that may be found in this document are defined as follows.
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Action Description
Click Select and release the primary mouse button without moving
the pointer.
Double-click Press the primary mouse button twice continuously and
quickly without moving the pointer.
Drag Press and hold the primary mouse button and move the
pointer to a certain position.
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Contents
About This Document.....................................................................................................................ii
1 Change History..............................................................................................................................1
2 RRU Introduction..........................................................................................................................2
2.1 RRU Exterior......................................................................................................................................................3
2.2 RRU Ports...........................................................................................................................................................4
2.3 RRU Indicators...................................................................................................................................................5
3 RRU Cables.....................................................................................................................................8
3.1 RRU Cable List................................................................................................................................................10
3.2 RRU PGND Cable............................................................................................................................................11
3.3 RRU Power Cable............................................................................................................................................12
3.4 RRU Alarm Cable............................................................................................................................................12
3.5 CPRI Fiber Optic Cable....................................................................................................................................14
3.6 RGPS Jumper...................................................................................................................................................17
3.7 SFP High-Speed Cable for Cascaded RRUs....................................................................................................18
3.8 RRU RF Jumper...............................................................................................................................................18
3.9 RRU AISG Multi-Wire Cable..........................................................................................................................19
3.10 RRU AISG Extension Cable..........................................................................................................................20
4 RRU Auxiliary Devices..............................................................................................................22
4.1 IFS06................................................................................................................................................................23
4.2 OCB..................................................................................................................................................................24
DBS3900
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1 Change History
This chapter describes changes in the RRU3252/RRU3256 Hardware Description.
Draft A (2012-11-30)
This is a draft.
DBS3900
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2 RRU Introduction
About This Chapter
This chapter describes the RRU.
The RRU performs the following functions:
lExchanges baseband data with a BBU.
lReceives RF signals from the antenna system, converts the received signals into IF signals,
amplifies the IF signals, and performs analog-to-digital conversion. The TX channel filters
downlink signals, performs digital-to-analog conversion, and converts IF signals into
signals applicable to the TX band.
lMultiplexes RX and TX signals on the RF channel, which enables these signals to share
the same antenna path. It also filters RX and TX signals.
2.1 RRU Exterior
This section describes the exterior and dimensions of an RRU.
2.2 RRU Ports
This section describes ports on the RRU panels. An RRU has a bottom panel, cabling cavity
panel, and indicator panel.
2.3 RRU Indicators
This section describes six indicators on an RRU. They indicate the running status.
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2.1 RRU Exterior
This section describes the exterior and dimensions of an RRU.
Figure 2-1 shows an RRU.
Figure 2-1 RRU exterior
Figure 2-2 shows RRU dimensions.
Figure 2-2 RRU dimensions
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2.2 RRU Ports
This section describes ports on the RRU panels. An RRU has a bottom panel, cabling cavity
panel, and indicator panel.
Figure 2-3 shows the ports on the RRU panels.
Figure 2-3 Ports on the RRU panels
Table 2-1 describes ports and indicators on the RRU panels.
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Table 2-1 Ports and indicators on the RRU panels
Item Label Description
(1) Ports at the bottom ANT0-ANT3 TX/RX ports. ANT0 port supports RET signal
transmission.
RET/EXT_ALM Communication port for the RET antenna or
port for alarm reporting, supporting RET
signal transmission
RGPS RGPS port, which is optional.
(2) Ports in the cabling
cavity
CPRI0/IR0 Optical port
CPRI1/IR1
RTN(+) Power supply socket
NEG(-)
(3) Indicators RUN For details, see 2.3 RRU Indicators.
ALM
ACT
VSWR
CPRI0/IR0
CPRI1/IR1
NOTE
If only two RF ports are required, ANT0 and ANT1 are used by default.
The RET ports to be used are determined by the software configuration.
2.3 RRU Indicators
This section describes six indicators on an RRU. They indicate the running status.
For the specific positions of RRU indicators, see 2.2 RRU Ports.
Table 2-2 describes RRU indicators.
Table 2-2 Indicators on the RRU
Label Color Status Description
RUN Green Steady on There is power supply, but the module
is faulty.
Steady off There is no power supply, or the
module is faulty.
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Label Color Status Description
Blinking on for 1s and off
for 1s
The module is working properly.
Blinking on for 0.125s and
off for 0.125s
Software is being loaded to the
module, or the module is not started.
ALM Red Steady on Alarms are generated, and the module
must be replaced.
Steady off No alarm is generated.
Blinking on for 1s and off
for 1s
Alarms are generated. The alarms
may be caused by the faults on the
related modules or ports. Therefore,
the necessity for module replacement
is uncertain.
ACT Green Steady on The module is working properly with
TX channels enabled or software is
being loaded without RRU running.
Blinking on for 1s and off
for 1s
The module is working properly with
TX channels disabled.
VSWR Red Steady off No VSWR alarm is generated.
Steady on A VSWR alarm is generated.
CPRI0/
IR0
Red or
green
Steady green The CPRI link is functioning
properly.
Steady red An optical module fails to transmit or
receive signals possibly because the
optical module is faulty or the optical
fiber cable is broken.
Blinking red on for 1s and
off for 1s
The CPRI link is out of lock possibly
because of mutual lock of dual-mode
clock sources or mismatched data
rates over CPRI ports. (You are
advised to check the system
configuration to rectify the fault.)
Steady off The SFP module is not properly
installed, or the optical module is
powered off.
CPRI1/
IR1
Red or
green
Steady green The CPRI link is functioning
properly.
Steady red An optical module fails to transmit or
receive signals possibly because the
optical module is faulty or the optical
fiber cable is broken.
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Label Color Status Description
Blinking red on for 1s and
off for 1s
The CPRI link is out of lock possibly
because of mutual lock of dual-mode
clock sources or mismatched data
rates over CPRI ports. (You are
advised to check the system
configuration to rectify the fault.)
Steady off The SFP module is not properly
installed, or the optical module is
powered off.
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3 RRU Cables
About This Chapter
This chapter describes RRU cables.
3.1 RRU Cable List
This section describes RRU cable connections.
3.2 RRU PGND Cable
An RRU PGND cable connects an RRU and a ground bar, ensuring the proper grounding of the
RRU.
3.3 RRU Power Cable
An RRU power cable is a -48 V DC shielded cable. It feeds -48 V DC power into an RRU.
3.4 RRU Alarm Cable
An RRU alarm cable, a shielded straight-through cable, transmits alarm signals from an external
device to RRUs so that the base station can monitor the operating status of external devices.
3.5 CPRI Fiber Optic Cable
CPRI fiber optic cables are classified into multi-mode fiber optic cables and single-mode fiber
optic cables. They transmit CPRI signals.
3.6 RGPS Jumper
A PGPS jumper connects a RGPS antenna to an RRU.
3.7 SFP High-Speed Cable for Cascaded RRUs
This section describes the SFP high-speed cable for cascaded RRUs. An SFP high-speed cable
for cascaded RRUs connects common public radio interface (CPRI) ports between two RRUs
and transmits CPRI signals between RRUs. SFP is short for small form-factor pluggable while
RRU is short for remote radio unit.
3.8 RRU RF Jumper
A 1/2" RRU RF jumper transmits and receives RF signals.
3.9 RRU AISG Multi-Wire Cable
This section describes a remote radio unit (RRU) AISG multi-wire cable with the length of 5 m.
It connects an RRU and a remote control unit (RCU) to transmit control signals from an eNodeB
to the remote electrical tilt (RET) antenna. When the RRU is connected to the RET antenna, an
AISG multi-wire cable transmits RS485 signals.
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3.10 RRU AISG Extension Cable
This section describes the remote radio unit (RRU) AISG extension cable. When the distance
between an RRU and a remote control unit (RCU) is longer than 5 m, an AISG multi-wire cable
is not long enough to connect the RRU and the RCU. In this case, an AISG extension cable is
used to extend the AISG multi-wire cable for transmitting RS485 signals.
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3.1 RRU Cable List
This section describes RRU cable connections.
Table 3-1 lists RRU cables.
Table 3-1 RRU cables
Cable One End The Other End
Connector Connected
to...
Connector Connected to...
3.2 RRU
PGND Cable
OT terminal
(M6)
Ground
terminal on the
RRU
OT terminal
(M8)
Ground terminal
on the ground bar
3.3 RRU Power
Cable
Tool-less
female
connector
(pressfit type)
NEG(-) and
RTN(+) ports
on the RRU
Tool-less female
connector
(pressfit type)
One of RRU0 to
RRU5 ports on
the EPS
OT terminal
(M4)
One of LOAD0
to LOAD5 ports
on the DCDU
One of LOAD4
to LOAD9 ports
on the PDU
3.5 CPRI Fiber
Optic Cable
DLC connector CPRI0/IR0 port
on the RRU
DLC connector CPRI port on the
LBBP in the
BBU
CPRI1/IR1 port
on the RRU
CPRI0/IR0 port
on the RRU
3.8 RRU RF
Jumper
Type N
connector
ANT0 to ANT3
ports on the
RRU
Type N
connector
Antenna system
3.6 RGPS
Jumper
(optional)
Waterproofed
DB15
connector
Remote Global
Positioning
System (RGPS)
port at the RRU
bottom
Round 12-pin
connector
RGPS antenna
3.7 SFP High-
Speed Cable
for Cascaded
RRUs
(optional)
SFP20 male
connector
CPRI1 port on
the RRU
SFP20 male
connector
CPRI0 port on
the RRU
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Cable One End The Other End
Connector Connected
to...
Connector Connected to...
3.4 RRU
Alarm Cable
(optional)
Waterproofed
DB9 male
connector
RET/
EXT_ALM
port on the
RRU
Cord end
terminal
External alarm
device
3.9 RRU AISG
Multi-Wire
Cable
(optional)
Waterproofed
DB9 male
connector
RET/
EXT_ALM
port on the
RRU
Standard AISG
female connector
Standard AISG
male connector
on the remote
control unit
(RCU) or on the
AISG extension
cable
3.10 RRU
AISG
Extension
Cable
(optional)
Standard AISG
male connector
Standard AISG
female
connector on
the AISG multi-
wire cable
Standard AISG
female connector
Standard AISG
male connector
on the RCU
3.2 RRU PGND Cable
An RRU PGND cable connects an RRU and a ground bar, ensuring the proper grounding of the
RRU.
Exterior
An RRU PGND cable is green or green and yellow, both ends of the cable are OT terminals. If
the customer prepares the PGND cable, a copper-core cable with a minimum cross-sectional
area of 16 mm2 (0.025 in.2) is recommended. Figure 3-1 shows a PGND cable.
Figure 3-1 PGND cable
(1) OT terminal (M6) (2) OT terminal (M8)
OT terminals must be added to both ends of a PGND cable onsite.
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3.3 RRU Power Cable
An RRU power cable is a -48 V DC shielded cable. It feeds -48 V DC power into an RRU.
Exterior
An RRU power cable has an easy power receptacle (pressfit type) connector at one end and bare
wires at the other end. Proper terminals are added to the bare wires based on the connector on
the external power device, as shown in Figure 3-2.
The cross-sectional area of an RRU power cable can be either 3.3 mm2 (0.005 in.2)/5.3 mm2
(0.008 in.2) or 4 mm2 (0.006 in.2)/6 mm2 (0.009 in.2). The former complies with North American
standards and the latter complies with European standards.
Figure 3-2 RRU power cable
Pin Assignment
The DC power input cable is a two-wire cable. Table 3-2 and Table 3-3 describe the pin
assignment for the wires of a DC power input cable.
Table 3-2 Pin assignment for the wires of a DC power input cable (North American standards)
Wire Color
NEG(-) Blue
RTN(+) Black
Table 3-3 Pin assignment for the wires of a DC power input cable (European standards)
Wire Color
NEG(-) Blue
RTN(+) Brown
3.4 RRU Alarm Cable
An RRU alarm cable, a shielded straight-through cable, transmits alarm signals from an external
device to RRUs so that the base station can monitor the operating status of external devices.
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Exterior
An alarm cable has a DB9 connector at one end and eight cord end terminals at the other end,
as shown in Figure 3-3.
Figure 3-3 RRU alarm cable
(1) DB9 waterproof connector (2) Cord end terminal
Pin Assignment
Table 3-4 describes the pin assignment for the wires of an RRU alarm cable.
Table 3-4 Pin assignment for the wires of an RRU alarm cable
RRU
Alarm
Port
Pin of the
DB9
Connecto
r
Wire
Color
Wire
Type
Cord End
Terminal
Description
Dry
contact
X1.2 White or
blue
Twisted
pair cable
X2 Boolean signal input 0+
X1.4 Blue X3 Boolean signal input 0-
(GND)
X1.7 White or
orange
Twisted
pair cable
X4 Boolean signal input 1+
X1.4 Orange X5 Boolean signal input 1-
(GND)
RS485 X1.6 White or
green
Twisted
pair cable
X6 APM RX-
X1.8 Green X7 APM RX+
X1.5 White or
brown
Twisted
pair cable
X8 APM TX-
X1.3 Brown X9 APM TX+
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