ZTE ZXMBW-R9100 ZXMBW R9100 Remote Radio Unit (2X4) User Manual manual

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ZXMBW R9100
Remote Radio Unit(2×4)
Technical Manual
ZTE CORPORATION
ZTE Plaza, Keji Road South,
Hi-Tech Industrial Park,
Nanshan District, Shenzhen,
P. R. China
518057
Tel: (86) 755 26771900 800-9830-9830
Fax: (86) 755 26772236
URL: http://support.zte.com.cn
E-mail: doc@zte.com.cn
LEGAL INFORMATION
Copyright © 2006 ZTE CORPORATION.
The contents of this document are protected by copyright laws and international treaties. Any reproduction or distribution of
this document or any portion of this document, in any form by any means, without the prior written consent of ZTE CORPORATION is prohibited. Additionally, the contents of this document are protected by contractual confidentiality obligations.
All company, brand and product names are trade or service marks, or registered trade or service marks, of ZTE CORPORATION
or of their respective owners.
This document is provided “as is”, and all express, implied, or statutory warranties, representations or conditions are disclaimed, including without limitation any implied warranty of merchantability, fitness for a particular purpose, title or non-infringement. ZTE CORPORATION and its licensors shall not be liable for damages resulting from the use of or reliance on the
information contained herein.
ZTE CORPORATION or its licensors may have current or pending intellectual property rights or applications covering the subject
matter of this document. Except as expressly provided in any written license between ZTE CORPORATION and its licensee,
the user of this document shall not acquire any license to the subject matter herein.
ZTE CORPORATION reserves the right to upgrade or make technical change to this product without further notice.
Users may visit ZTE technical support website http://ensupport.zte.com.cn to inquire related information.
The ultimate right to interpret this product resides in ZTE CORPORATION.
Revision History
Revision No.
Revision Date
Revision Reason
R1.0
02/04/2008
First Edition
R1.1
04/01/2008
Support 3.5GHz
Serial Number: sjzl20080369
Content
Preface............................................................... i
Product Overview..............................................1
R9100 Position in the Network.......................................... 1
R9100 Appearance ......................................................... 2
R9100 System Structure ................................................. 3
R9100 Functions............................................................. 3
R9100 Features .............................................................. 4
Technical Specifications ................................................... 6
R9100 Engineering Specifications.................................. 6
R9100 Power Supply Specifications ............................... 7
R9100 Power Consumption Specifications ...................... 7
R9100 RF Power Specifications ..................................... 7
Applied Standards .......................................................... 8
International Standards............................................... 8
Lightning Proof Standards............................................ 8
Safety Standards........................................................ 9
EMC Standards........................................................... 9
Environment Standards ..............................................10
Hardware Description...................................... 13
Cabinet ........................................................................13
R9100 Cabinet Structure ............................................13
R9100 Interface Description........................................14
Modules .......................................................................15
Modules Constituents .................................................15
WRFE.......................................................................15
WRFE Functions ................................................15
WRFE Performance Specifications ........................16
WRPM ......................................................................16
WRPM Functions ...............................................16
WRPM Work Principle .........................................16
WDPA ......................................................................17
WDPA Functions................................................17
WDPA Work Principle .........................................17
WTRX ......................................................................18
WTRX Functions................................................18
WTRX Work Principle .........................................19
Cables .........................................................................20
Cables List................................................................20
DC Power Cable.........................................................20
Grounding Cable........................................................20
Optical Fiber .............................................................21
RF Jumper Cable .......................................................21
Main Antenna Feeder System .........................................22
Main Antenna Feeder System Structure ........................22
Antenna Structure .....................................................24
Feeder .....................................................................24
Protocol Interface Description ........................ 27
ASN Network Reference Model.........................................27
R1 Interface .................................................................29
R1 Interface Functions ...............................................29
R1 Message Format ...................................................29
R1 Protocol Stack ......................................................29
MAC Layer of R1 Protocol Stack ..........................30
PHY Layer of R1 Protocol Stack ...........................31
Baseband-RF Interface ...................................................31
Baseband-RF Interface Functions .................................31
OBSAI Frame Structure ..............................................31
Baseband-RF Interface Physical Layer ..........................33
Figures ............................................................ 35
Tables ............................................................. 37
Index .............................................................. 39
List of Glossary................................................ 41
Preface
Purpose
This manual provides ZXMBW R9100 Remote Radio Unit(2x4)
product overview, which will help the readers know the product’s
function, principle, specification, features, cabinet, modules,
external interfaces and cables.
Intended
Audience
This document is intended for engineers and technicians who perform operation activities ZXMBW R9100.
Prerequisite Skill
and Knowledge
To use this document effectively, users should have a general understanding of WiMAX system. Familiarity with the following is
helpful:
What is in This
Manual
�
WiMAX technology
�
IEEE802.16e - Standard
�
ZXMBW R9100 and its various components
This Manual contains the following chapters:
Chapter
Summary
Chapter 1 Product Overview
This chapter describes product’s
function, specification, features and
technical specifications.
Chapter 2 Hardware
Description
This chapter describes product’s module
function and work principle, cables’s
structure and main antenna system.
Chapter 3 Protocol Interface
Description
This chapter describes product’s protocol
interfaces.
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ZXMBW R9100 Technical Manual
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ii
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Chapter
Product Overview
Table of Contents:
R9100 Position in the Network..............................................
R9100 Appearance .............................................................
R9100 System Structure .....................................................
R9100 Functions ................................................................
R9100 Features..................................................................
Technical Specifications .......................................................
Applied Standards ..............................................................
R9100 Position in the
Network
The position ZXMBW R9100 in Base Station (BS) is as shown in
Figure 1.
FIGURE 1 ZXMBW R9100 POSITION
IN
BS
Table 1 shows meanings of the network elements.
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ZXMBW R9100 Technical Manual
TABLE 1 NETWORK ELEMENTS
Name
Meaning
AGW
Access Service Network GateWay
BBU
Base station Baseband Unit
BS
Base Station
MS
Mobile Station
R9100
Enhanced Radio Unit (2 carriers)
Interfaces of ZXMBW R9100:
�
Baseband-RF interface: an interface between R9100 and
BBU, abides by Open Base Station Architecture Initiative (OBSAI) RP3 standard.
�
R1 interface: an interface between BS and MS, abides by
IEEE 802.16e-2005 protocol.
R9100 Appearance
ZXMBW R9100 radio unit is made of cast aluminum metal. It is
very small and exquisite.
Figure 2 shows the appearance of ZXMBW R9100. The cabinet
surface is coated by silver gray paint that is suitable for outdoor
climate.
FIGURE 2 ZXMBW R9100 APPEARANCE
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Chapter 1 Product Overview
R9100 System Structure
ZXMBW R9100 is a remote Radio Frequency (RF) unit that accomplishes the conversion between the RF signal and baseband signal.
An Optical fiber is used to accomplish the baseband data interface
and baseband I/Q interface. RF cable is used to accomplish the
antenna interface.
Figure 3 shows ZXMBW R9100 system structure.
FIGURE 3 ZXMBW R9100 SYSTEM STRUCTURE
Note:
�
The real line indicates 2T×2R Multiple-Input Multiple Output
(MIMO) and the dotted line indicates optional and supports
2T×4R MIMO.
�
FCC RF exposure standards require that this equipment should
be installed in such a way as to maintain a separation distance
of 300 cm between the antenna used with this device and all
the persons.
�
Forward link: WTRX receives forward signal sent by BBU via
an optical interface, performs digital intermediate frequency
processing and up-conversion. WDPA performs signal amplification, then WRFE performs forward filtering, and finally sends
RF signal to air via an antenna.
�
Reverse link: WRFE receives signal from an antenna, then
sends to WTRX to perform down-conversion and digital intermediate frequency processing and finally sends to BBU via an
optical interface.
R9100 Functions
As a remote RF unit, ZXMBW R9100 performs the following functions.
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ZXMBW R9100 Technical Manual
1. Forward Link Functions
�
�
�
�
ZXMBW R9100 receives In-phase and Quadrature phase
(I/Q) signals from Base station Baseband Unit (BBU) via optical interface for up-conversion. ZXMBW R9100 Performs
RF power amplification and transmission filtering on the received signals, and then transmits the signals via antenna.
Provides standing wave detection of antenna feeder interface.
Provides power detection of baseband signals and antenna
feeder interface.
Provides automatic and manual calibration.
2. Reverse Link Functions
�
�
�
ZXMBW R9100 sends the received air-interface signals to
BBU via an optical fiber after band pass filtering. ZXMBW
R9100 performs low noise amplification, RF mixing and digital down-conversion to baseband.
Provides Received Signal Strength Indicator (RSSI) function.
Provides Automatic Gain Control (AGC).
3. Other Functions
�
Monitors and manages power amplifiers and power supplies.
�
Regenerates Time Division Duplex (TDD) time sequence.
�
Provides version query and update.
�
Supports measurements of transmission delay.
�
Restores and regenerates clocks at the fiber interface.
�
Supports AISG electrical tunable antenna and trunk nodes
monitoring.
R9100 Features
ZXMBW R9100 is designed for outdoor use. It is also applicable in
basements and city squares.
Following are the features of ZXMBW R9100:
�
ZXMBW R9100 and Baseband unit (BBU) together accomplish
Base Station (BS) functions.
�
Supports single carrier such as 5 MHz, 7MHz or 10 MHz.
�
Supports 2Tx2R or 2Tx4R Multiple-Input Multiple-Output
(MIMO) technology (optional).
�
Supports Worldwide Interoperability for Microwave Access
(WiMAX) band class 2300 MHz ~ 2400 MHz and band class
2490MHz2580MHz and 2600 MHz ~ 2690 MHz and band class
3400 MHz ~ 3500 MHz and band class 3500 MHz ~ 3600 MHz.
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Chapter 1 Product Overview
�
For band class 2.3 GHz, output power is up to 2 x 10 W. For
band class 2.5 GHz, output power is up to 2 x 10 W. For band
class 3.5 GHz, output power is up to 2 x 4 W.
�
Working temperature range is from - 40 °C ~ + 55 °C and
supports IP65 shell protection level.
�
Lightning protection level is 15 kA.
�
Supports remote external monitoring such as one half-duplex
RS232, one half-duplex RS485 and seven trunk nodes monitoring (optional).
�
The Baseband-RF interface complies with an Open Base Station Architecture Initiative (OBSAI) standard. Supports flexible
networking such as star and chain networking.
�
The Baseband-RF interface supports optical fiber backup, thus
the reliability is increased.
�
Due to small size and light weight provides easy installation and
maintenance. It can be installed on poles, walls and racks.
�
Many ZXMBW R9100s can share the Global Positioning System
(GPS) of baseband pool to save money.
�
External antenna is used. Directional antenna and omni-directional antenna are available.
�
Software remote download is available.
�
Remote control board reset is available.
�
Supports -48 V DC power supply.
�
Complies with the FCC, CE and Underwriter Laboratories Inc.
(UL) certified standards.
�
Complies with Part 15 of the FCC Rules. Operation is subject
to the condition that this device does not cause harmful interference.
Caution:
The user is cautioned that changes or modifications not expressly approved by the party responsible for compliance could
void the user’s authority to operate the equipment.
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ZXMBW R9100 Technical Manual
Technical Specifications
R9100 Engineering Specifications
Physical
Specifications
Physical specifications of ZXMBW R9100 are listed in Table 2.
TABLE 2 PHYSICAL SPECIFICATIONS
Name
Index
Dimensions
320 mm x 370 mm x 160 mm (width x height
x depth), i.e.,
12 10/16 in x 14 9/16 in x 6 5/16 in (width
x height x depth)
Volume
19 L
Weight
16.3 kg (35 15/16 lb)
Shell protection level
IP65
ZXMBW R9100’s Modules’ Dimensions
Temperature
and Humidity
Specifications
WRFE (RFE filter)
module
200 mm x 230 mm x 25 mm (width x height
x depth), i.e.,
7 14/16 in x 9 1/16 in x 16/16 in (width x
height x depth)
WRPM (Power supply)
module
80 mm x 250 mm x 40 mm (width x height x
depth), i.e.,
3 2/16 in x 9 13/16 in x 1 9/16 in (width x
height x depth)
WDPA (Power
amplifier) module
210 mm x 270 mm x 20 mm (width x height
x depth), i.e.,
8 4/16 in x 10 10/16 in x 13/16 in (width x
height x depth)
WTRX (Transceiver)
module
210 mm x 330 mm x 25 mm (width x height
x depth), i.e.,
8 4/16 in x 12 16/16 in x 16/16 in (width x
height x depth)
Temperature and humidity specifications of ZXMBW R9100 are
listed in Table 3.
TABLE 3 TEMPERATURE
AND
HUMIDITY SPECIFICATIONS
Name
Index
Temperature requirement
Working temperature: -45° C ~
+55° C
Storage temperature: -45° C ~
+85° C
Humidity requirement
Working humidity: 5% RH ~ 95% RH
Storage humidity: 5% RH ~ 98% RH
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Chapter 1 Product Overview
R9100 Power Supply Specifications
Table 4 shows DC power supply specifications for ZXMBW R9100
to run normally.
TABLE 4 POWER SUPPLY SPECIFICATIONS
Category
Nominal Value
Power Supply Range
DC
-48 V DC
-60 V DC ~ -36 V DC
R9100 Power Consumption
Specifications
Table 5 shows the power consumption specifications of ZXMBW
R9100.
TABLE 5 POWER CONSUMPTION SPECIFICATIONS
Name
Index
Power consumption
≤ 200 W
R9100 RF Power Specifications
Table 6 shows Radio Frequency (RF) power specifications of
ZXMBW R9100.
TABLE 6 RF POWER SPECIFICATIONS
Name
Carrier
Output
Power
Power Step
Dynamic
Range
Output
power
for 2.3
GHz
Single
10 W
0.5 dB
±15 dB
Double
2 x 10 W
Output
power
for 2.5
GHz
Single
10 W
Double
2 x 10 W
Output
power
for 3.5
GHz
Single
4 W
Double
2x4W
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ZXMBW R9100 Technical Manual
Applied Standards
International Standards
The ZXMBW R9100 complies with the following international standards:
1. Institute of Electrical and Electronics Engineers (IEEE) Standard 802.16-2004, IEEE Standard for Local and Metropolitan
Area Networks - Part 16: Air Interface for Fixed Wireless Access Systems.
2. Institute of Electrical and Electronics Engineers (IEEE) Standard 802.16-2005, Part 16: Air Interface for Fixed and Mobile
Broadband Wireless Access Systems.
3. Worldwide Interoperability for Microwave Access (WiMax) ForumTM Mobile Radio Conformance Tests (MRCT).
4. Worldwide Interoperability for Microwave Access (WiMAX)
ForumTM Mobile Protocol Implementation Conformance Statement (PICS) Proforma.
5. Worldwide Interoperability for Microwave Access (WiMAX) ForumTM Mobile System Profile.
6. Open Base Station Architecture Initiative (OBSAI) Reference
Point 3 Specification Version 3.0.
Lightning Proof Standards
The ZXMBW R9100 complies with the following lightning proof
standards:
1. International Electrotechnical Commission (IEC) 61312-1
(1995) Protection against Lightning Electromagnetic Impulse
Part I: General Principles.
2. International Electrotechnical Commission (IEC) 61643-1
(1998) Surge Protective devices connected to low-voltage
power distribution systems.
3. International Telecommunications Union (ITU) -T K.11 (1993)
Principles of Protection against Overvoltage and Overcurrent.
4. International Telecommunications Union (ITU) -T K.27 (1996)
Bonding Configurations and Earthing Inside a Telecommunication Building.
5. European Telecommunication Standard (ETS) 300 253 (2004)
Equipment Engineering; Earthing and bonding of telecommunication equipment in telecommunication centres.
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Chapter 1 Product Overview
Safety Standards
The ZXMBW R9100 complies with the following safety standards:
1. International Electrotechnical Commission (IEC) 60950 Safety
of information technology equipment including Electrical Business Equipment.
2. International Electrotechnical Commission (IEC) 60215 Safety
requirement for radio transmitting equipment.
3. Canadian Standards Association (CAN/CSA) - C22.2 No 1-M94
Audio, Video and similar Electronic Equipment.
4. Canadian Standards Association (CAN/CSA) - C22.2 No 950-95
Safety of Information Technology Equipment including Electrical Business Equipment.
5. University of Limerick (UL) 1419 Standard for Professional
Video and Audio Equipment.
6. 73/23/ Electrical and Eletronics Commission (EEC) Low Voltage
Directive.
7. University of Limerick (UL) 1950 Safety of information technology equipment including Electrical Business Equipment.
8. International Electrotechnical Commission (IEC) 60529 Classification of degrees of protection provided by enclosure (IP
Code).
9. GOST 30631-99. General Requirements to machines, instruments and other industrial articles on stability to external mechanical impacts while operating.
10. GOST 12.2.007.0-75. Electro-technical devices. The general
safety requirements.
EMC Standards
The ZXMBW R9100 complies with the following EMC standards:
1. IEC Special International Committee on Radio Interference
(CISPR) 22 (1997): Limits and methods of measurement of
radio disturbance characteristics of information technology
equipment.
2. EN 301 489-1 Part 1: Common technical requirements.
3. International Electrotechnical Commission (IEC) 61000-6-1:
1997: Electromagnetic Compatibility (EMC) - Part 6: Generic
standards - Section 1: Immunity for residential, commercial
and light-industrial environments.
4. International Electrotechnical Commission (IEC) 61000-6-3:
1996: Electromagnetic Compatibility (EMC) - Part 6: Generic
standards - Section 3: mission standard for residential, commercial and light industrial environments.
5. International Electrotechnical Commission (IEC) 61000-4-2
(1995): Electromagnetic Compatibility (EMC) - Part 4: Test-
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ZXMBW R9100 Technical Manual
ing and measurement techniques - Section 2: Electrostatic
discharge immunity test.
6. International Electrotechnical Commission (IEC) 61000-4-3
(1995): Electromagnetic Compatibility (EMC) - Part 4: Testing
and measurement techniques - Section 3: Radiated, radio-frequency electromagnetic field immunity test.
7. International Electrotechnical Commission (IEC) 61000-4-4
(1995): Electromagnetic Compatibility (EMC) - Part 4: Testing
and measurement techniques - Section 4: Electrical fast
transient/burst immunity test.
8. International Electrotechnical Commission (IEC) 61000-4-5
(1995): Electro- Magnetic Compatibility (EMC) - Part 4: Testing and measurement techniques - Section 5: Surge immunity
test.
9. International Electrotechnical Commission (IEC) 61000-4-6
(1996): Electro- Magnetic Compatibility (EMC) - Part 4:
Testing and measurement techniques - Section 6: Immunity
to contacted disturbances, induced by radio frequency fields.
10. International Telecommunications Union (ITU) -T Recommendation K.20: Resistibility of Telecommunication Switching
Equipment to Overvoltages and Overcurrents.
11. GOST R 51318.22-99: Electromagnetic compatibility of technical equipment. Man-made noise from informational equipment. Limits and test methods.
12. GOST 30429-96: Electromagnetic compatibility of technical
equipment. Man-made noise from equipment and apparatus
used together with service receiver systems of civil application. Limits and test methods.
Environment Standards
The ZXMBW R9100 complies with the following environment standards:
1. International Electrotechnical Commission (IEC) 60529 "Degrees of protection provided by enclosure (IP code)".
2. International Electrotechnical Commission (IEC) 60721-3-1:
Classification of environmental conditions- Part3: Classification of groups of environmental parameters and their severities-Section 1: Storage
3. International Electrotechnical Commission (IEC) 60721-3-2:
Classification of environmental conditions- Part3: Classification of groups of environmental parameters and their severities-Section 2: Transportation.
4. International Electrotechnical Commission (IEC) 60721-3-3
(1994): Classification of environmental conditions - Part 3:
Classification of groups of environmental parameters and their
severities - Section 3: Stationary use at weather protected
locations.
5. European Telecommunication Standard (ETS) 300 019-2-1:
Equipment Engineering (EE); Environmental conditions and
10
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Chapter 1 Product Overview
environmental tests for telecommunications equipment; Part
2-1, Specification of environmental tests Storage.
6. European Telecommunication Standard (ETS) 300 019-2-2:
Equipment Engineering (EE ); Environmental conditions and
environmental tests for telecommunications equipment; Part
2-2, Specification of environmental tests Transportation.
7. European Telecommunication Standard (ETS) 300 019-2-3:
Equipment Engineering (EE); Environmental conditions and
environmental tests for telecommunications equipment; Part
2-3, Specification of environmental tests Transportation Stationary use at weather-protected locations.
8. International Electrotechnical Commission (IEC) 60068-2-1
(1990): Environmental testing - Part 2: Tests. Tests A: Cold.
9. International Electrotechnical Commission (IEC) 60068-2-2
(1974): Environmental testing - Part 2: Tests. Tests B: Dry
heat.
10. International Electrotechnical Commission (IEC) 60068-2-6
(1995): Environmental testing - Part 2: Tests - Test Fc:
Vibration (sinusoidal).
11. GOST 15150-69: Machines, instruments and other industrial
articles. Applications for different climatic regions. Categories,
operating, storage and transportation conditions in compliance
with the environmental factors.
12. GOST 23088-80: Electronic equipment. Requirements to
packing and transportation and test methods.
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11
ZXMBW R9100 Technical Manual
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12
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Chapter
Hardware Description
Table of Contents:
Cabinet ............................................................................13
Modules ...........................................................................15
Cables .............................................................................20
Main Antenna Feeder System .............................................22
Cabinet
R9100 Cabinet Structure
Figure 4 shows the cabinet structure of ZXMBW R9100 .
FIGURE 4 ZXMBW R9100 CABINET STRUCTURE
1.
2.
Cabinet
Bottom Panel
3.
Handle
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ZXMBW R9100 Technical Manual
R9100 Interface Description
Short Description
The ZXMBW R9100 is highly integrated. Only four modules are
used and many external interfaces are available on the panel. The
power interface connects with the WRPM module, RF antenna interface connects with the WRFE module and BDS-RFS Optical Fiber
interfaces connect with the WTRX module.
ZXMBW R9100
External
Interfaces
External interfaces are located on the ZXMBW R9100 bottom plate.
Figure 5 shows the position of the interfaces on the ZXMBW R9100
panel.
FIGURE 5 ZXMBW R9100 EXTERNAL INTERFACES
1.
2.
3.
Interface
Description
BDS-RFS Optical Fiber (LC1/2)
Antenna Interface Standard Group
(AISG)
Monitoring Interface (MON)
4.
5.
6.
Power Interface (DC IN)
RF Antenna Interface (Port2/3)
RF Antenna Interface (Port0/1)
Table 7 Lists the description of the external interfaces of ZXMBW
R9100 cabinet.
TABLE 7 ZXMBW R9100 EXTERNAL INTERFACE DESCRIPTION
14
Interface
Description
BDS-RFS Fiber Optical
(LC1/2)
This interface connects the ODF.
Antenna Interface
Standard Group (AISG)
This is the test interface. The Indoor AISG
control cable connects the WTRX board.
The outdoor AISG control cable connects
the antenna for adjusting the azimuth of
the antenna.
Monitoring Interface
(MON)
The monitoring cable connects between
the MON interface on the cabinet with the
various monitoring devices.
Power Interface (DC IN)
-48VDC power cable connects between DC
IN and the power source.
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Chapter 2 Hardware Description
Interface
Description
RF Antenna Interface
(Port2/3)
The RF cable connects the Antenna with
the port 2/3 of the cabinet.
RF Antenna Interface
(Port0/1)
The RF cable connects the Antenna with
the port 0/1 of the cabinet.
Modules
Modules Constituents
The ZXMBW R9100 is composed of WRFE, WRPM, WDPA, and
WTRX modules. The physical description of these modules are
given below.
�
WiMAX RF Front End Filter (WRFE)
The dimension of WRFE module is 200mm X 230mm X 25mm
(width X height X depth), excluding connector.
�
WiMAX RRU Power Module (WRPM)
The dimension of WRPM module is 80mm X 250mm X 40mm
(width X height X depth), excluding connector.
�
WiMAX Digital Power Amplifier (WDPA)
The dimension of WDPA module is 210mm X 270mm X 20mm
(width X height X depth), excluding connector.
�
WiMAX Transmitter & Receiver (WTRX)
The dimension of WTRX module is 210mm X 330mm X 25mm
(width X height X depth), excluding connector.
WRFE
WRFE Functions
Short Description
The WRFE module is the WiMAX RF Front End Filter module of
ZXMBW R9100 .
The WRFE module performs the following functions.
�
Transfers RF signal to antenna.
�
Filters RF signals.
�
Provides lightning proof for RF unit.
�
Isolates uplink and downlink as the receiving and transmitting
power is different.
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15
ZXMBW R9100 Technical Manual
WRFE Performance Specifications
Short Description
WRFE Performance Specifications
The following describes the performance specifications of the
WRFE module.
Table 8 lists the performance specifications of WRFE module.
TABLE 8 WRFE PERFORMANCE SPECIFICATIONS
Range
Index
Frequency range
2300
2490
2600
3400
3500
MHz
MHz
MHz
MHz
MHz
~ 2400 MHz
~ 2580 MHz
~ 2690 MHz
~ 3500 MHz
~ 3600 MHz
WRPM
WRPM Functions
Short Description
In ZXMBW R9100 , the WiMAX RRU Power Module (WRPM) is responsible for power supply conversion. The WRPM module is optional in system configuration.
The WRPM module performs the following functions.
�
Power supply conversion
�
Lightning proof
�
EMI filtering
�
Power supply management and alarm.
WRPM Work Principle
Short Description
16
The following describes the work principle of WRPM module.
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Chapter 2 Hardware Description
WRPM Work
Principle
Figure 6 shows the work principle block diagram of WRPM module.
FIGURE 6 WRPM WORK PRINCIPLE
Description
The WRPM module consists of an EMI filtering unit, protection unit,
DC-DC conversion unit and alarm monitoring unit. The function of
each component is introduced below.
�
EMI filtering unit provides filtering function.
�
Protection unit provides over-voltage or under-voltage protection.
�
DC-DC conversion unit provides power supply conversion.
�
Alarm monitoring unit reports the under-voltage, over-voltage and over-current alarms.
WDPA
WDPA Functions
Short Description
In ZXMBW R9100, the WiMAX Digital Power Amplifier (WDPA)
module amplifies the RF power.
The WDPA module performs the following functions:
�
RF amplification
�
VSWR measurement
�
Alarm reporting
WDPA Work Principle
Short Description
The following describes the working principle of WiMAX Digital
Power Amplifier (WDPA) module.
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WDPA Work
Principle
Figure 7 shows the work principle block diagram of WDPA module.
FIGURE 7 WDPA WORK PRINCIPLE
Description
The WDPA module consists of an amplifier circuit, circulator, coupler, power supply, alarm reporting unit and LNA . The function of
each unit is described below.
�
Amplifier circuit provides the main RF amplification channel.
�
Circulator separates the receiving and sending signals.
�
Coupler extracts the RF signal transmitted by base station. It
is responsible for monitoring and measuring RF signal.
�
Power supply unit provides power supply for each unit.
�
Alarm reporting unit reports the temperature, high/low
power and standing wave alarms.
�
Low Noise Amplifier (LNA) amplifies the received signals.
WTRX
WTRX Functions
Short Description
In ZXMBW R9100, the WiMAX Transmitter & Receiver (WTRX)
module is used for RF up/down-conversion.
The WTRX module performs the following functions:
18
�
Baseband RF clock extracting, restoring and distributing
�
RRU centralized monitoring
�
Digital intermediate frequency processing
�
RF small signal up/down-conversion
�
Power supply generation
�
Supports OBSAI-RP3 interface.
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Chapter 2 Hardware Description
WTRX Work Principle
WTRX Work
Principle
Figure 8 shows the work principle block diagram of WTRX module.
FIGURE 8 WTRX WORK PRINCIPLE
Description
The WTRX module consists of an Optical fiber interface circuit, Intermediate frequency processing circuit, Clock processing circuit,
RF processing circuit, Centralized monitoring circuit, and Power
supply processing circuit. The function of each unit is described
below.
�
Optical fiber interface circuit interfaces with BBU, and it
supports optical fiber loopback networking and optical fiber
concatenating networking. The frame packing and unpacking
in optical fiber are also supported.
�
Intermediate frequency processing circuit and RF processing circuit accomplishes the forward transmission
process; receives baseband signal, performs up-conversion
and sends to power amplifier after amplification. It also
performs standing wave checking at antenna feeder interface,
forward automatic calibration and manual calibration.
The circuit also accomplishes the reverse receiving process;
receives RF WiMAX signal in reverse direction; performs pass
band filtering, low noise amplification, RF frequency mixing and
digital down-conversion to baseband rate. After optical interface processing, the signal is transmitted to Base station Baseband Unit (BBU) via an Open Base Station Architecture Initiative (OBSAI) protocol. It also performs the reverse Received
Signal Strength Indicator (RSSI) measurement and Automatic
Gain Control (AGC).
�
Clock processing circuit restores, converts, and distributes
the clocks. It also reports the temperature, low/high power,
and standing wave alarms.
�
Centralized monitoring circuit monitors and manages the
power supply, version and electronic adjusting antenna. It
monitors the exterior devices via trunking node and RS232 or
RS485. It also regenerates the TDD time sequences.
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�
Power supply processing circuit provides power supply for
each unit.
Cables
Cables List
The ZXMBW R9100 uses the following cables according to the applications:
�
Power Supply cable
�
Grounding cable
�
Optical fiber
�
RF Jumper
DC Power Cable
Currently ZXMBW R9100 supports -48 V DC power supply only.
The power cable directly connects DC input power source with DC
IN interface at ZXMBW R9100 cabinet bottom.
Figure 9 shows the structure of -48 V DC power cable.
FIGURE 9 ZXMBW R9100 DC POWER CABLE STRUCTURE
Grounding Cable
The grounding cable is made of 10 mm2 yellow/green burningprevention cable. Circular unsheathed crimping connectors (lug)
are used at both ends (A and B).
Figure 10 shows the structure of grounding cable.
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Chapter 2 Hardware Description
FIGURE 10 GROUNDING CABLE STRUCTURE
Optical Fiber
Optical Fiber
Structure
Figure 11 shows the optical fiber structure used in ZXMBW R9100.
FIGURE 11 ZXMBW R9100 OPTICAL FIBER STRUCTURE
Description
The following describes some of the key points related to the physical structure of the fiber cable.
�
The cable is a single mode fiber with LC/PC - DLC/PC connector.
�
The sheath usually is black. The two core wires are yellow and
blue.
�
The sheath diameter is 7mm.
RF Jumper Cable
RF jumper cable is used to transfer signals between ZXMBW
R9100cabinet and antenna, between ZXMBW R9100cabinet and
main feeder cable, and between main feeder cable and antenna.
The length of the RF jumper cable is determined according to the
actual situation.
When the distance between antenna and ZXMBW R9100cabinet is
less and the adopted feeder cable is of 1/2 in. then, the jumper cable is not used, rather ZXMBW R9100cabinet is directly connected
with the feeder cable and feeder cable is connected to the antenna.
If the adopted feeder cable is of 7/8 in. or 5/4 in. then jumper is
used.Figure 12 shows the RF jumper cable.
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ZXMBW R9100 Technical Manual
FIGURE 12 RF JUMPER CABLE
Main Antenna Feeder
System
Main Antenna Feeder System
Structure
The main antenna feeder system consists of the equipments related to antenna and feeder.
Figure 13 illustrates a typical structure of the main antenna feeder
system.
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Chapter 2 Hardware Description
FIGURE 13 MAIN ANTENNA FEEDER SYSTEM STRUCTURE
1.
2.
3.
4.
5.
Lightning Rod
Antenna
Antenna jumpers
Lightning proof grounding clip
Main feeder cable
6.
7.
8.
9.
Iron tower
Cabling rack
Cabinet jumper
Cabinet
Note:
�
Since RF transmission power of ZXMBW R9100 is relatively
weak, the antenna is installed nearer to the cabinet. It usually
adopts self-carried feeder cable. 1/2″ or 7/8" feeder cables
are adopted only when the antenna is far from the cabinet.
�
Usually, the number of antennas range between two to four.
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ZXMBW R9100 Technical Manual
Antenna Structure
Antenna is an important radio equipment adopted to transmit and
receive electromagnetic wave. Antenna is divided into omni antenna and directional antenna by radiation direction; according to
polarization mode, antenna can be divided into single-polarized
antenna and bi-polarization antenna.Figure 14 illustrates the appearance of omni antenna and directional antenna.
FIGURE 14 THE
APPEARANCE OF OMNI ANTENNA AND DIRECTIONAL ANTENNA
Feeder
The feeder is used to receive and transmit radio RF signals between
the antenna and the ZXMBW R9100. There are many types of
feeder cables such as 1/2 inch and 7/8 inch feeder cable.
When the distance between the ZXMBW R9100 cabinet and antenna is less, then 1/2 inch feeder cable is used. In this case,
ZXMBW R9100cabinet is directly connected to the 1/2 inch feeder
and 1/2 inch feeder cable is connected to antenna.
When the distance between theZXMBW R9100 cabinet and antenna is more, then 7/8 inch feeder cable is used. In this case,
ZXMBW R9100cabinet is first connected to the jumper, then
jumper is connected to 7/8 inch feeder cable, and 7/8 inch feeder
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Chapter 2 Hardware Description
cable is again connected to jumper and lastly jumper is connected
to antenna.
The antenna may have N type or DIN type interface. The feeder
is adapted to female and male N connectors. Usually both ends
of the delivered feeder are male N connector to facilitate on-site
installation.
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Chapter
Protocol Interface
Description
Table of Contents:
ASN Network Reference Model.............................................27
R1 Interface .....................................................................29
Baseband-RF Interface .......................................................31
ASN Network Reference
Model
The following describes the Access Service Network (ASN) network
reference model. The ASN network reference model developed
by the WiMAX (Worldwide Inter-operability for Microwave Access)
NWG (Net Work Group) is shown in Figure 15.
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FIGURE 15 ASN NETWORK REFERENCE MODEL
The interface of Figure 15 are described in Table 9.
TABLE 9 INTERFACES DESCRIPTION
28
Interface
Name
Description
R1
Air interface between the terminal and the RRU.
R3
The interface between the AGW (ASN-GW, Access
Service Network Gate Way) and the CN.
R4
Interface between ASNs, i.e. the interface between
AGWs. It implements some switching-related
signaling and established data channel to maintain
data integrity during switching.
R6
The interface between the AGW and the BS.
R7
Internal interface of the AGW. It is selective. It
divides the AGW into strategy judgment function
and implementing function.
R8
Interface between BSs.
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Chapter 3 Protocol Interface Description
R1 Interface
R1 Interface Functions
The R1 interface performs the following functions:
�
Co-operates with the Base station Baseband Unit (BBU) to
perform measurement, management, and control of radio
resources.
�
Receives and transmits RF signals.
R1 Message Format
Description
Figure 16 illustrates management message format of the R1 interface of Media Access Control (MAC) Layer.
FIGURE 16 R1 MESSAGE FORMAT
The management messages of MAC Layer are presented in MAC
Protocol Data Unit (PDU) payload. All management messages of
MAC Layer are composed of an initial field "Management Message
Type" and "Management Message Payload". The length of the
"Management Message Type" is 8 bit; the type of the management message depends on the requirements of an air interface
protocol in IEEE 802.16.
The MAC management messages in basic connection, broadcast
connection, and initial distance-testing connection are not divided
into chips or bound into packets. But the MAC management messages in the primary management connection can be divided into
chips or bound into packets.
R1 Protocol Stack
Overview
Figure 17 illustrates a schematic diagram of R1 Interface Protocol
Stack.
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ZXMBW R9100 Technical Manual
FIGURE 17 R1 INTERFACE PROTOCOL STACK
The R1 interface protocol stack includes MAC Layer and PHY Layer.
MAC Layer of R1 Protocol Stack
Description
MAC layer of R1 protocol stack contains three sub-layers (from top
to bottom); Service-Specific Convergence Sub-layer (CS), MAC
Common Part Sub-layer (MAC CPS) and Security Sub-layer.
1. Service-Specific Convergence Sub-layer (CS)
Different protocol interfaces provide different CS specifications.
The function of Service-Specific Convergence Sub-layer (CS)
is to convert/map the external data received by the Convergence Sub-layer Service Access Point (CS SAP) into MAC Service Data Unit (MAC SDU) and send it to the MAC CPS through
the MAC Service Access Point (MAC SAP). The other function
of this layer is to sort external SDUs associated with suitable
Service Flow Identifier (SFID), Connection Identifier (CID) and
Payload Header Suppression (PHS).
2. MAC Common Part Sub-layer (MAC CPS)
MAC CPS does not need to analyze the load information of the
CS.
MAC CPS realizes the core function of the MAC layer including bandwidth distribution, connection establishment and connection maintenance. It receives data of different CS layers
through MAC SAP and sort them based on different MAC connection. Quality of Service (QoS) is applied in data transmission and scheduling of physical layer.
Data, PHY control information and statistical information between the MAC CPS and PHY is transmitted through PHY SAP.
3. Security Sub-layer
MAC contains an independent security sub-layer to provide authentication, security key exchange and realize encryption.
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Chapter 3 Protocol Interface Description
PHY Layer of R1 Protocol Stack
Description
The PHY layer of R1 protocol stack contains multiple regulations.
Each regulation corresponds to a specific frequency range and application.
The PHY layer of R1 protocol stack is based on the modulating
mode of Orthogonal Frequency Division Multiplexing (OFDM).
Baseband-RF Interface
Baseband-RF Interface Functions
The ZXMBW R9100 baseband-RF interface performs the following
functions:
�
Data transmission from fiber-optical interfaces
�
�
�
Uplink I/Q signals received by the ZXMBW R9100.
Exchange of control signaling
�
�
�
�
Downlink I/Q data signals from the Base station Baseband
Unit (BBU).
ZXMBW R9100 running status measurement signaling and
measurement result feedback.
Reset signaling and execution feedback of all boards in the
R01P.
Link test, alarm report and processing between the ZXMBW
R9100 and the BBU .
Interaction of configuration signaling
�
I/Q channel configuration.
�
Frequency point initiation and reallocation.
�
�
RF power configuration, timely report of launched power,
and report of Received Signal Strength Indicator (RSSI)
measurement.
Configuration and re-configuration of environment monitoring threshold.
OBSAI Frame Structure
Overview
The three layers of an Open Base Station Architecture Initiative
(OBSAI) frame are Message Frame, Message Group (MG) and Master Frame.
Message Frame
Message Frame is the basic unit of an OBSAI . The total length
of the frame is 19 bytes, and is composed of address, type, time
stamp (T-Stamp) and payload.
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ZXMBW R9100 Technical Manual
Figure 18 illustrates message frame format.
FIGURE 18 MESSAGE FRAME FORMAT
Table 10 shows the length of each part of a message frame.
TABLE 10 MESSAGE FRAME’S FIELD LENGTH
Message Group
(MG)
Field Name
Length (bits)
Address
13
Type
Time stamp (T-Stamp)
Payload
128
Total length
152 (19 bytes)
Each MG contains M_MG pieces of message and K_MG pieces of
IDLE code. The number of bytes in a MG is M_MG * 19 + K_MG
= 21*19+1 = 400 (Bytes).
Figure 19 illustrates the structure of MG.
FIGURE 19 MESSAGE GROUP STRUCTURE
A RP3 frame contains N_MG pieces of MG and the length is (I *
N_MG * (M_MG * 19 bytes + K_MG * 1)). I is the rate level (1, 2,
4). The recommended standards are M_MG = 21, K_MG = 1 and
N_MG = 1920.
Master Frame
The number of bytes in a Master Frame (10 ms) are I * 1920 *
400 = I * 768000 (Bytes), where I = 1, 2, 4.
OBSAI supports 3 kinds of rate levels: 1x, 2x, and 4x. Figure 20
illustrates frame format under each rate level.
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Chapter 3 Protocol Interface Description
FIGURE 20 MASTER FRAME FORMAT
The master frame under the 3 rate levels is 10 ms. The line rate is:
(I * 768000/10 ms) * 8 * 10/8 = I * 768 Mbps. For 1x, 2x and 4x,
the rate are 768 Mbps, 1536 Mbps and 3072 Mbps respectively.
The usual optical modules are of 1.25 G and 2.5 G and cannot
suit the above values. Therefore, the standard rate of OBSAI is
adjusted to M_MG = 42, K_MG = 2, N_MG = 768 to realize the 1x
rate of 614.4 Mbps, 2x rate of 1228.8 Mbps and 4x rate of 2457.6
Mbps. Therefore, transmission can be realized in 1.25 G and 2.5
G optical modules.
Baseband-RF Interface Physical
Layer
Overview
Features
The physical layer of the baseband-RF interface is based on differential signaling technology. Differential signaling with clock data
recovery circuit provides high-speed serial data transmission between the RF and baseband modules. It also helps reduce power
consumption and increases system reliability.
The features of the baseband-RF interface physical layer are:
�
Adaptive Modulation and Coding (AMC)
�
Fast channel feedback
�
Mutiple-in Multiple-out (MIMO)
�
�
Multiple antennas on sender and receivers
�
Increased spectral efficiency
Hybrid Automatic Repeat Request (HARQ)
�
Adjusts automatically to channel conditions
�
Adds redundancy only when needed
�
Receiver saves failed transmission attempts to help future
decoding
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Figures
Figure 1 ZXMBW R9100 Position in BS ................................... 1
Figure 2 ZXMBW R9100 Appearance...................................... 2
Figure 3 ZXMBW R9100 System Structure.............................. 3
Figure 4 ZXMBW R9100 Cabinet Structure ............................13
Figure 5 ZXMBW R9100 External Interfaces ..........................14
Figure 6 WRPM Work Principle .............................................17
Figure 7 WDPA Work Principle .............................................18
Figure 8 WTRX Work Principle .............................................19
Figure 9 ZXMBW R9100 DC Power Cable Structure .................20
Figure 10 Grounding Cable Structure....................................21
Figure 11 ZXMBW R9100 Optical Fiber Structure....................21
Figure 12 RF Jumper Cable .................................................22
Figure 13 Main Antenna Feeder System Structure ..................23
Figure 14 The appearance of omni antenna and directional
antenna ...........................................................24
Figure 15 ASN Network Reference Model ..............................28
Figure 16 R1 Message Format .............................................29
Figure 17 R1 Interface Protocol Stack...................................30
Figure 18 Message Frame Format ........................................32
Figure 19 Message Group Structure .....................................32
Figure 20 Master Frame Format ...........................................33
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Tables
Table 1 Network Elements.................................................... 2
Table 2 Physical Specifications .............................................. 6
Table 3 Temperature and Humidity Specifications .................... 6
Table 4 Power Supply Specifications ...................................... 7
Table 5 Power Consumption Specifications ............................. 7
Table 6 RF Power Specifications ............................................ 7
Table 7 ZXMBW R9100 External Interface Description .............14
Table 8 WRFE Performance Specifications..............................16
Table 9 Interfaces Description .............................................28
Table 10 Message Frame’s Field Length.................................32
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Index
AGC............................. 4, 19
AMC ................................ 33
MIMO.................................3
MS ....................................2
BBU.................... 2–4, 19, 31
BS.....................................2
OBSAI........................ 19, 31
OBSAI-RP3 ....................... 18
CAN/CSA............................9
CE .....................................5
CID ................................. 30
CISPR ................................9
CS................................... 30
EE ................................... 11
EMC................................. 10
EMI ................................. 16
ETS ............................. 8, 10
PHS ................................. 30
PHY ............................30–31
PICS ..................................8
R9100................................2
RF ............... 4, 15, 18–19, 29
RRU................................. 18
RS232 ............................. 19
RS485 ............................. 19
RSSI.......................... 19, 31
SFID................................ 30
FCC ...................................5
TDD................................. 19
HARQ .............................. 33
UL ................................. 5, 9
IEC.............................. 8–10
IEEE ............................ 8, 29
ITU.............................. 8, 10
WDPA ................... 15, 17–18
WiMAX ...............................8
WRFE...................... 3, 15–16
WRPM .........................15–16
WTRX ............... 3, 15, 18–19
LNA ................................. 18
MAC ...........................29–30
MAC CPS .......................... 30
MAC SDU ......................... 30
MG .................................. 32
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List of Glossary
AGW - Access Service Network GateWay
AISG - Antenna Interface Standards Group
ASN - Access Service Network
BBU - BaseBand Unit
BBU - BaseBand Unit
BS - Base Station
CN - Core Network
EMI - Electromagnetic Interference
GPS - Global Positioning System
LNA - Low Noise Amplifier
MAC - Media Access Control
MG - Message Group
MIMO - Multiple-Input Multiple-Output
MS - Mobile Station
OBSAI - Open Base Station Architecture Initiative
OFDM - Orthogonal Frequency Division Multiplexing
PDU - Protocol Data Unit
QoS - Quality of Service
The performance specification of a communications channel or system. QOS may be quantitatively indicated by channel or system
performance parameters, such as signal-to-noise ratio (S/N), bit
error ratio (BER), message throughput rate, and call blocking probability. QOS is a subjective rating of telephone communications
quality in which listeners judge transmissions by qualifiers, such
as excellent, good, fair, poor, or unsatisfactory.
RF - Radio Frequency
RRU - Remote Radio Unit
RSSI - Received Signal Strength Indicator
The measured power of a received signal.
TDD - Time Division Duplex
A transmission method that uses only one channel for transmitting
and receiving, separating them by different time slots. No guard
band is used. This increases spectral efficiency by eliminating the
buffer band, but also increases flexibility in asynchronous applications. For example, if less traffic travels upstream, the time slice
for that direction can be reduced, and reallocated to downstream
traffic.
VSWR - Voltage Standing Wave Ratio
WDPA - WiMAX Digital Power Amplifier
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ZXMBW R9100 Technical Manual
WiMAX - Worldwide Interoperability for Microwave Access
WRFE - WiMAX RF Front End Filter
WRPM - WiMAX RRU Power Module
WTRX - WiMAX Transmitter & Receiver
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