FCC ID: Q78-ZXMBW-R9100 ZXMBW R9100 Remote Radio Unit (2X4)

ZXMBW R9100 Remote Radio Unit(24) 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 CORPO-

RATION 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 dis-

claimed, including without limitation any implied warranty of merchantability, fitness for a particular purpose, title or non-in-

fringement. 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. R1.0 R1.1 Serial Number: sjzl20080369 Revision Date 02/04/2008 04/01/2008 Revision Reason First Edition Support 3.5GHz 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 Intended Audience Prerequisite Skill and Knowledge This manual provides ZXMBW R9100 Remote Radio Unit(2x4) product overview, which will help the readers know the products function, principle, specification, features, cabinet, modules, external interfaces and cables. This document is intended for engineers and technicians who per-

form operation activities ZXMBW R9100. To use this document effectively, users should have a general un-

derstanding of WiMAX system. Familiarity with the following is helpful:

WiMAX technology What is in This Manual IEEE802.16e - Standard ZXMBW R9100 and its various components This Manual contains the following chapters:

Chapter Summary Chapter 1 Product Overview This chapter describes products function, specification, features and technical specifications. Chapter 2 Hardware Description This chapter describes products module function and work principle, cabless structure and main antenna system. Chapter 3 Protocol Interface Description This chapter describes products protocol interfaces. Confidential and Proprietary Information of ZTE CORPORATION i ZXMBW R9100 Technical Manual This page is intentionally blank. ii Confidential and Proprietary Information of ZTE CORPORATION C h a p t e r 1 Product Overview Table of Contents:

R9100 Position in the Network.............................................. 1 R9100 Appearance ............................................................. 2 R9100 System Structure ..................................................... 3 R9100 Functions ................................................................ 3 R9100 Features.................................................................. 4 Technical Specifications ....................................................... 6 Applied Standards .............................................................. 8 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. Confidential and Proprietary Information of ZTE CORPORATION 1 ZXMBW R9100 Technical Manual TABLE 1 NETWORK ELEMENTS Name AGW BBU BS MS R9100 Meaning Access Service Network GateWay Base station Baseband Unit Base Station Mobile Station 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 (OB-

SAI) 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 2 Confidential and Proprietary Information of ZTE CORPORATION Chapter 1 Product Overview R9100 System Structure ZXMBW R9100 is a remote Radio Frequency (RF) unit that accom-

plishes 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 2T2R Multiple-Input Multiple Output

(MIMO) and the dotted line indicates optional and supports 2T4R 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 amplifi-

cation, 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 inter-

mediate frequency processing and finally sends to BBU via an optical interface. R9100 Functions As a remote RF unit, ZXMBW R9100 performs the following func-

tions. Confidential and Proprietary Information of ZTE CORPORATION 3 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 op-

tical interface for up-conversion. ZXMBW R9100 Performs RF power amplification and transmission filtering on the re-

ceived signals, and then transmits the signals via antenna. Provides standing wave detection of antenna feeder inter-

face. 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 dig-

ital down-conversion to baseband. Provides Received Signal Strength Indicator (RSSI) func-

tion. Provides Automatic Gain Control (AGC). 3. Other Functions Monitors and manages power amplifiers and power sup-

plies. 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. 4 Confidential and Proprietary Information of ZTE CORPORATION 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 moni-

toring (optional). The Baseband-RF interface complies with an Open Base Sta-

tion 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-direc-

tional 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 inter-

ference. Caution:

The user is cautioned that changes or modifications not ex-

pressly approved by the party responsible for compliance could void the users authority to operate the equipment. Confidential and Proprietary Information of ZTE CORPORATION 5 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 Dimensions Index 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 Weight 19 L 16.3 kg (35 15/16 lb) Shell protection level IP65 ZXMBW R9100s Modules Dimensions 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 WDPA (Power amplifier) module WTRX (Transceiver) 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) 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) 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 Temperature and humidity specifications of ZXMBW R9100 are listed in Table 3. TABLE 3 TEMPERATURE AND HUMIDITY SPECIFICATIONS Name Index Temperature requirement Humidity requirement Working temperature: -45 C ~

+55 C Storage temperature: -45 C ~

+85 C Working humidity: 5% RH ~ 95% RH Storage humidity: 5% RH ~ 98% RH 6 Confidential and Proprietary Information of ZTE CORPORATION 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 Power consumption Index 200 W R9100 RF Power Specifications Table 6 shows Radio Frequency (RF) power specifications of ZXMBW R9100. Power Step 0.5 dB Dynamic Range 15 dB TABLE 6 RF POWER SPECIFICATIONS Name Carrier Output power for 2.3 GHz Output power for 2.5 GHz Output power for 3.5 GHz Single Double Single Double Single Double Output Power 10 W 2 x 10 W 10 W 2 x 10 W 4 W 2 x 4 W Confidential and Proprietary Information of ZTE CORPORATION 7 ZXMBW R9100 Technical Manual Applied Standards International Standards The ZXMBW R9100 complies with the following international stan-

dards:

1. Institute of Electrical and Electronics Engineers (IEEE) Stan-

dard 802.16-2004, IEEE Standard for Local and Metropolitan Area Networks - Part 16: Air Interface for Fixed Wireless Ac-

cess Systems. 2. Institute of Electrical and Electronics Engineers (IEEE) Stan-

dard 802.16-2005, Part 16: Air Interface for Fixed and Mobile Broadband Wireless Access Systems. 3. Worldwide Interoperability for Microwave Access (WiMax) Fo-

rumTM Mobile Radio Conformance Tests (MRCT). 4. Worldwide Interoperability for Microwave Access (WiMAX) ForumTM Mobile Protocol Implementation Conformance State-

ment (PICS) Proforma. 5. Worldwide Interoperability for Microwave Access (WiMAX) Fo-

rumTM 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 Telecommunica-

tion Building. 5. European Telecommunication Standard (ETS) 300 253 (2004) Equipment Engineering; Earthing and bonding of telecommu-

nication equipment in telecommunication centres. 8 Confidential and Proprietary Information of ZTE CORPORATION 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 Busi-

ness 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 Electri-

cal 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 technol-

ogy equipment including Electrical Business Equipment. 8. International Electrotechnical Commission (IEC) 60529 Clas-

sification of degrees of protection provided by enclosure (IP Code). 9. GOST 30631-99. General Requirements to machines, instru-

ments and other industrial articles on stability to external me-

chanical 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, com-

mercial and light industrial environments. 5. International Electrotechnical Commission (IEC) 61000-4-2

(1995): Electromagnetic Compatibility (EMC) - Part 4: Test-

Confidential and Proprietary Information of ZTE CORPORATION 9 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-fre-

quency 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: Test-

ing 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 Recommen-

dation K.20: Resistibility of Telecommunication Switching Equipment to Overvoltages and Overcurrents. 11. GOST R 51318.22-99: Electromagnetic compatibility of tech-

nical equipment. Man-made noise from informational equip-

ment. 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 applica-

tion. Limits and test methods. Environment Standards The ZXMBW R9100 complies with the following environment stan-

dards:

1. International Electrotechnical Commission (IEC) 60529 "De-

grees of protection provided by enclosure (IP code)". 2. International Electrotechnical Commission (IEC) 60721-3-1:

Classification of environmental conditions- Part3: Classifica-

tion of groups of environmental parameters and their severi-

ties-Section 1: Storage 3. International Electrotechnical Commission (IEC) 60721-3-2:

Classification of environmental conditions- Part3: Classifica-

tion of groups of environmental parameters and their severi-

ties-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 Confidential and Proprietary Information of ZTE CORPORATION 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 Sta-

tionary 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. Confidential and Proprietary Information of ZTE CORPORATION 11 ZXMBW R9100 Technical Manual This page is intentionally blank. 12 Confidential and Proprietary Information of ZTE CORPORATION C h a p t e r 2 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. Cabinet 2. Bottom Panel 3. Handle Confidential and Proprietary Information of ZTE CORPORATION 13 ZXMBW R9100 Technical Manual R9100 Interface Description Short Description ZXMBW R9100 External Interfaces 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 in-

terface connects with the WRFE module and BDS-RFS Optical Fiber interfaces connect with the WTRX module. 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. BDS-RFS Optical Fiber (LC1/2) 2. Antenna Interface Standard Group

(AISG) Power Interface (DC IN) 4. 5. RF Antenna Interface (Port2/3) 6. RF Antenna Interface (Port0/1) 3. Monitoring Interface (MON) Table 7 Lists the description of the external interfaces of ZXMBW R9100 cabinet. Interface Description TABLE 7 ZXMBW R9100 EXTERNAL INTERFACE DESCRIPTION Interface Description BDS-RFS Fiber Optical

(LC1/2) Antenna Interface Standard Group (AISG) Monitoring Interface

(MON) Power Interface (DC IN) This interface connects the ODF. 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. The monitoring cable connects between the MON interface on the cabinet with the various monitoring devices.

-48VDC power cable connects between DC IN and the power source. 14 Confidential and Proprietary Information of ZTE CORPORATION Chapter 2 Hardware Description Interface Description RF Antenna Interface

(Port2/3) RF Antenna Interface

(Port0/1) The RF cable connects the Antenna with the port 2/3 of the cabinet. 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. Confidential and Proprietary Information of ZTE CORPORATION 15 ZXMBW R9100 Technical Manual Short Description WRFE Perfor-

mance Specifi-

cations 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 Index Range 2300 MHz ~ 2400 MHz 2490 MHz ~ 2580 MHz 2600 MHz ~ 2690 MHz 3400 MHz ~ 3500 MHz 3500 MHz ~ 3600 MHz Frequency range WRPM WRPM Functions Short Description In ZXMBW R9100 , the WiMAX RRU Power Module (WRPM) is re-

sponsible for power supply conversion. The WRPM module is op-

tional 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 The following describes the work principle of WRPM module. 16 Confidential and Proprietary Information of ZTE CORPORATION 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 pro-

tection. DC-DC conversion unit provides power supply conversion. Alarm monitoring unit reports the under-voltage, over-volt-

age 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. Confidential and Proprietary Information of ZTE CORPORATION 17 ZXMBW R9100 Technical Manual 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, cou-

pler, 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:

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. 18 Confidential and Proprietary Information of ZTE CORPORATION 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, In-

termediate 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 pro-

cessing 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 inter-

face processing, the signal is transmitted to Base station Base-

band Unit (BBU) via an Open Base Station Architecture Initia-

tive (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. Confidential and Proprietary Information of ZTE CORPORATION 19 ZXMBW R9100 Technical Manual Power supply processing circuit provides power supply for each unit. Cables Cables List The ZXMBW R9100 uses the following cables according to the ap-

plications:

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 burning-

prevention cable. Circular unsheathed crimping connectors (lug) are used at both ends (A and B). Figure 10 shows the structure of grounding cable. 20 Confidential and Proprietary Information of ZTE CORPORATION 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 phys-

ical 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 ca-

ble 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. Confidential and Proprietary Information of ZTE CORPORATION 21 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 re-

lated to antenna and feeder. Figure 13 illustrates a typical structure of the main antenna feeder system. 22 Confidential and Proprietary Information of ZTE CORPORATION Chapter 2 Hardware Description FIGURE 13 MAIN ANTENNA FEEDER SYSTEM STRUCTURE Lightning Rod 1. 2. Antenna 3. Antenna jumpers 4. 5. Main feeder cable Lightning proof grounding clip Iron tower 6. 7. Cabling rack 8. Cabinet jumper 9. 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. Confidential and Proprietary Information of ZTE CORPORATION 23 ZXMBW R9100 Technical Manual Antenna Structure Antenna is an important radio equipment adopted to transmit and receive electromagnetic wave. Antenna is divided into omni an-

tenna 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 ap-

pearance 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 an-

tenna 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 an-

tenna 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 24 Confidential and Proprietary Information of ZTE CORPORATION 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. Confidential and Proprietary Information of ZTE CORPORATION 25 ZXMBW R9100 Technical Manual This page is intentionally blank. 26 Confidential and Proprietary Information of ZTE CORPORATION C h a p t e r 3 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. Confidential and Proprietary Information of ZTE CORPORATION 27 ZXMBW R9100 Technical Manual FIGURE 15 ASN NETWORK REFERENCE MODEL The interface of Figure 15 are described in Table 9. TABLE 9 INTERFACES DESCRIPTION Interface Name Description R1 R3 R4 R6 R7 R8 Air interface between the terminal and the RRU. The interface between the AGW (ASN-GW, Access Service Network Gate Way) and the CN. 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. The interface between the AGW and the BS. Internal interface of the AGW. It is selective. It divides the AGW into strategy judgment function and implementing function. Interface between BSs. 28 Confidential and Proprietary Information of ZTE CORPORATION 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 inter-

face 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 manage-

ment 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 mes-

sages 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. Confidential and Proprietary Information of ZTE CORPORATION 29 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 Conver-

gence Sub-layer Service Access Point (CS SAP) into MAC Ser-

vice 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 includ-

ing bandwidth distribution, connection establishment and con-

nection maintenance. It receives data of different CS layers through MAC SAP and sort them based on different MAC con-

nection. Quality of Service (QoS) is applied in data transmis-

sion and scheduling of physical layer. Data, PHY control information and statistical information be-

tween the MAC CPS and PHY is transmitted through PHY SAP. 3. Security Sub-layer MAC contains an independent security sub-layer to provide au-

thentication, security key exchange and realize encryption. 30 Confidential and Proprietary Information of ZTE CORPORATION 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 ap-

plication. 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 Downlink I/Q data signals from the Base station Baseband Unit (BBU). Uplink I/Q signals received by the ZXMBW R9100. Exchange of control signaling 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 moni-

toring threshold. OBSAI Frame Structure Overview The three layers of an Open Base Station Architecture Initiative

(OBSAI) frame are Message Frame, Message Group (MG) and Mas-

ter 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. Confidential and Proprietary Information of ZTE CORPORATION 31 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 FRAMES FIELD LENGTH Field Name Address Type Time stamp (T-Stamp) Payload Total length Length (bits) 13 5 6 128 152 (19 bytes) Message Group

(MG) 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 Master Frame 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. 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. 32 Confidential and Proprietary Information of ZTE CORPORATION 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 The physical layer of the baseband-RF interface is based on differ-

ential signaling technology. Differential signaling with clock data recovery circuit provides high-speed serial data transmission be-

tween 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) Features 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 Confidential and Proprietary Information of ZTE CORPORATION 33 ZXMBW R9100 Technical Manual This page is intentionally blank. 34 Confidential and Proprietary Information of ZTE CORPORATION 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 Confidential and Proprietary Information of ZTE CORPORATION 35 ZXMBW R9100 Technical Manual This page is intentionally blank. 36 Confidential and Proprietary Information of ZTE CORPORATION 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 Frames Field Length.................................32 Confidential and Proprietary Information of ZTE CORPORATION 37 ZXMBW R9100 Technical Manual This page is intentionally blank. 38 Confidential and Proprietary Information of ZTE CORPORATION Index A AGC............................. 4, 19 AMC ................................ 33 B BBU.................... 24, 19, 31 BS.....................................2 C CAN/CSA............................9 CE .....................................5 CID ................................. 30 CISPR ................................9 CS................................... 30 E EE ................................... 11 EMC................................. 10 EMI ................................. 16 ETS ............................. 8, 10 F FCC ...................................5 H HARQ .............................. 33 I IEC.............................. 810 IEEE ............................ 8, 29 ITU.............................. 8, 10 L LNA ................................. 18 M MAC ...........................2930 MAC CPS .......................... 30 MAC SDU ......................... 30 MG .................................. 32 MIMO.................................3 MS ....................................2 O OBSAI........................ 19, 31 OBSAI-RP3 ....................... 18 P PHS ................................. 30 PHY ............................3031 PICS ..................................8 R R9100................................2 RF ............... 4, 15, 1819, 29 RRU................................. 18 RS232 ............................. 19 RS485 ............................. 19 RSSI.......................... 19, 31 S SFID................................ 30 T TDD................................. 19 U UL ................................. 5, 9 W WDPA ................... 15, 1718 WiMAX ...............................8 WRFE...................... 3, 1516 WRPM .........................1516 WTRX ............... 3, 15, 1819 Confidential and Proprietary Information of ZTE CORPORATION 39 ZXMBW R9100 Technical Manual This page is intentionally blank. 40 Confidential and Proprietary Information of ZTE CORPORATION 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 sys-

tem. 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 prob-

ability. 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 applica-

tions. 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 Confidential and Proprietary Information of ZTE CORPORATION 41 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 42 Confidential and Proprietary Information of ZTE CORPORATION