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Technical Manual
Airbridge BTS3606A CDMA Base Station

System Description

Chapter 4 Main Functions

4-1

Chapter 4 Main Functions

The BTS3606A supports the following CDMA2000 1x standards:

The Um interface supports the TIA/EIA IS -2000 Rel.A standard and is compatible

with the TIA/EIA-95-A/B standard.

The minimum performance of the BTS3606A satisfies TIA/EIA-97-D

requirements.

The BTS3606A supports the following 1xEV-DO standards:

The Um interface supports the C.S0024-0 standard.

The minimum performance of the BTS3606A satisfies C.S0032-0 requirements.

4.1 Power Control and Rate Control

The CDMA system is a self-interference system. Every subscriber is an interference

source to other subscribers. If it is possible to ensure that every MS transmits at the

minimum power it needs, the whole system capacity can reach the maximum.

Therefore, power control directly affects the system capacity and the service quality.

Operating in the CDMA2000 1x system, the BTS3606A adopts power control

mechanism. Power control is classified into forward power control and reverse power

control. Forward power control is used to control the transmit power of the BTS.

Reverse power control aims to control the transmit power of the MS.

Operating in the 1xEV-DO system, the BTS3606A adopts rate control in the forward

direction, and the rate control plus power control in the reverse direction.

I. Forward power control

There are several methods to realize forward power control, depending on the MS

protocol version and the system parameters.

Power control based on PMRM

When the MS uses the Power Measurement Report Message (PMRM) for power

control, it determines the method and frequency of reporting PMRM according to

the received control message contained in the system parameter message.

Power control based on EIB

When the MS uses the Erasure Indicator Bit (EIB) for power control, it detects

forward frame quality and sends this information to the BTS using EIB. The BTS

will adjust the transmit power according to the EIB information.

Forward fast power control

The MS adjusts the BTS power according to the power control bit. The power

control bit can be transmitted at a maximum speed of 800 bps.

Содержание Airbridge BTS3606A

Страница 1: ...HUAWEI 1 System Description 2 System Principle Airbridge BTS3606A CDMA Base Station Technical Manual V200R001 ...

Страница 2: ...ies Co Ltd provides customers with comprehensive technical support and service Please feel free to contact our local office or company headquarters Huawei Technologies Co Ltd Address Administration Building Huawei Technologies Co Ltd Bantian Longgang District Shenzhen P R China Postal Code 518129 Website http www huawei com Email support huawei com ...

Страница 3: ... Tellwin Inmedia VRP DOPRA iTELLIN HUAWEI OptiX C C08iNET NETENGINE OptiX iSite U SYS iMUSE OpenEye Lansway SmartAX infoX TopEng are trademarks of Huawei Technologies Co Ltd All other trademarks mentioned in this manual are the property of their respective holders Notice The information in this manual is subject to change without notice Every effort has been made in the preparation of this manual ...

Страница 4: ...ations of the BTS3606A Module 2 System Principle Introduce the general structure of the BTS3606A the baseband subsystem RF subsystem antenna subsystem power and environment monitoring subsystem The BTS lightning protection system grounding system BTS signaling flow and BTS configuration are also covered in the module Intended Audience The manual is intended for the following readers l Technical ma...

Страница 5: ... items are grouped in braces and separated by vertical bars A minimum of one or a maximum of all can be selected x y Optional alternative items are grouped in square brackets and separated by vertical bars Many or none can be selected III GUI conventions Convention Description Button names are inside angle brackets For example click the OK button Window names menu items data table and field names ...

Страница 6: ... Click Press the left button twice continuously and quickly Drag Press and hold the left button and drag it to a certain position VI Symbols Eye catching symbols are also used in the manual to highlight the points worthy of special attention during the operation They are defined as follows Caution Warning Danger Means reader be extremely careful during the operation Note Comment Tip Knowhow Though...

Страница 7: ...ility 2 5 2 6 Easy Upgrade and Expansion 2 6 2 7 Serial Products for Seamless Coverage 2 6 Chapter 3 Product Architecture 3 1 3 1 Cabinet Physical Features 3 1 3 2 Cabinet Configuration 3 2 3 3 System Structure 3 3 3 3 1 Baseband Subsystem 3 4 3 3 2 RF Subsystem 3 4 3 3 3 Antenna Subsystem 3 5 3 3 4 Power Supply and Environment Monitoring Subsystem 3 5 3 4 Physical Interface 3 6 Chapter 4 Main Fun...

Страница 8: ... 1 7 1 Structure and Environment Specifications 7 1 7 2 Capacity Specifications 7 2 7 3 Transmitter and Receiver Specifications 7 3 7 3 1 Transmitter and Receiver Specifications at 450 MHz Band 7 3 7 3 2 Transmitter and Receiver Specifications at 800 MHz Band 7 4 7 3 3 Transmitter and Receiver Specifications at 1900 MHz Band 7 4 7 4 Specifications for ODU3601C Cascading 7 5 Chapter 8 Technical Sta...

Страница 9: ... CDMA2000 1x 1xEV DO hybrid network 1 2 Figure 3 1 BTS3606A cabinet 3 1 Figure 3 2 A fully equipped BTS3606A cabinet 3 2 Figure 3 3 BTS3606A system structure 3 4 Figure 4 1 Close loop power control 4 2 Figure 6 1 BSS AN local operation and maintenance system 6 1 Figure 6 2 Networking of M2000 mobile integrated network management system 6 3 ...

Страница 10: ...CDMA Base Station System Description List of Tables iv List of Tables Table 1 1 Comparison between CDMA2000 1x and 1xEV DO 1 1 Table 2 1 Application comparison among serial BTS products 2 7 Table 3 1 Boards and modules of the BTS3606A 3 2 ...

Страница 11: ...al time video traffic news video phone video conference real time security information and location base services This chapter provides the compassion between the CDMA2000 1x and the 1xEV DO technologies and introduces the network solution of Huawei CDMA2000 1x 1xEV DO hybrid mobile communication system and the position of BTS3606A in this solution 1 1 Comparison between CDMA2000 1x and 1xEV DO Th...

Страница 12: ...ODU ODU ODU ODU MS AT BTS3601C ODU3601C BTS3606 cBTS3612 BTS3612A BTS3606A Optical fiber MS AT Packet Domain Network Equipment Circuit Domain Network Equipment Mobile Network Management System Internet PSTN ISDN PLMN A3 A7 A1 A2 A10 A11 Abis A 1 A 2 BSC PCF BSC PCF MS A 1 0 A 1 1 Abis Abis BSS AN CN BTS Abis BTS BTS BTS BTS BTS ODU ODU ODU ODU MS AT BTS3601C ODU3601C BTS3606 cBTS3612 BTS3612A BTS3...

Страница 13: ... a single cabinet is six sector carriers With the multi carrier technology the BTS3606A can support a maximum of 18 sector carriers l BTS3606 Indoor BTS equipment supporting the CDMA2000 1x and CDMA2000 1xEV DO standards The maximum capacity of a single cabinet is six sector carriers With the multi carrier technology the BTS3606 can support a maximum of 18 sector carriers l cBTS3612 Indoor BTS equ...

Страница 14: ...he user to access a packet data network through the 1xEV DO Access Network An AT is analogous to a mobile station in an CDMA2000 1x system It may be connected to a computing device like a laptop computer or may be a self contained data device like a Personal Digital Assistant PDA 1 2 2 Brief Introduction to CN The CN comprises the packet domain network and the circuit domain network I Packet domai...

Страница 15: ...ace the BTS3606A helps the BSC manage radio resources radio parameters and interfaces It also implements over the Um interface the radio transmission between the BTS and the MS as well as related control functions II Position in the application The BTS3606A is an outdoor BTS It can adapt to the sophisticated natural and electromagnetic environment The BTS3606A features lower cost fast deployment a...

Страница 16: ...ge power coverage of a single sector or large capacity coverage of multiple carriers l Adopt resource pool design to improve the hardware resource utilization ratio and the system error tolerance capability l Adopt the digital Intermediate Frequency IF technology to improve the system availability l Adopt intelligent fan control to increase the service life of fans and reduce the noise l Support a...

Страница 17: ...d better than 126 dBm in the multi carrier mode II Transmit power measured at the antenna port of the cabinet l Single carrier mode The maximum average transmit power is 25 W When the large power combiner is configured two powers can be combined to output an average transmit power up to 50 W l Multi carrier mode When the BTS3606 operates at 450 MHz it does not support the multi carrier When the BT...

Страница 18: ...ystem GPS clock l Global Navigation Satellite System GLONASS clock l Other external clock sources Thus it can adapt to various networking situations If the BTS High Precision Clock Module HPCM is configured the BTS3606A can keep clock synchronization for twenty four hours after the external clock source signal is lost 2 4 Convenient Operation and Maintenance Operation and maintenance of the BTS360...

Страница 19: ... Board loopback test l Self test l Trunk loopback test VI Site monitoring Data transmission channels are available for the monitoring equipment in the equipment room to facilitate attendance free and centralized monitoring of the BTS3606A VII Upgrade Users can upgrade the s ystem through remote loading The upgrade process is retrievable that is the system can back off to the original one when the ...

Страница 20: ...ed with a temperature control system The operating temperature of the BTS3606A with air conditioner is from 40 C to 55 C The operating temperature of the BTS3606A with heat exchanger is from 40 C to 45 C In a high temperature environment the BTS3606A uses its temperature control unit to dissipate heat In a low temperature environment the built in heater is activated to ensure the internal componen...

Страница 21: ...th CDMA2000 1x and 1xEV DO It can be evolved to 1xEV DV EVolution Data and Voice smoothly The network can be upgraded from CDMA2000 1x to CDMA2000 1x EV DO by replacing the CCPM with CECM and upgrading the BTS software to protect the operator s investment II Flexible configuration The BTS3606A supports the multi cell configuration When it is cascaded with ODU3601C the ODU3601C can be configured as...

Страница 22: ...medium and small cities and towns Outdoor BTS supporting CDMA2000 1x and 1xEV DO BTS3606A Multi carrier 18 Large High traffic area and limited equipment room space highly populated area and city Outdoor BTS supporting CDMA2000 1x and 1xEV DO cBTS3612 12 Large Highly populated area and city Indoor BTS supporting both CDMA2000 1x and 1xEV DO BTS3612A 6 Medium High traffic area and limited equipment ...

Страница 23: ...mensions are 1700 mm 1200 mm 1000 mm Height Width Depth excluding the components installed on the top of the cabinet Figure 3 1 shows the BTS3606A cabinet BTS3606A BTS3606A Figure 3 1 BTS3606A cabinet The BTS3606A cabinet has the following features l Total enclosed integrated structure and power environment adaptively l Light weight owing to its aluminum alloy materials l Excellent electrical cond...

Страница 24: ...DC PSU AC DC PSU AC DC PSU AC DC PSU AC DC PSU AC DC PSU AC DC PSU AC DC Air exhaust vent Air exhaust vent Air exhaust vent Air exhaust vent C H P A 1 C T R M 1 C H P A 3 C T R M 3 C H P A 5 C T R M 5 C H P A 0 C T R M 0 C H P A 2 C T R M 2 C H P A 4 C T R M 4 CDDU 0 CDDU 1 CDDU 2 27V PDU C C P M 4 C C P M 2 C C P M 0 C C P M 5 C C P M 3 C C P M 1 B C K M 0 B C I M 0 B C K M 1 Cable through Cable ...

Страница 25: ...t Unit Note l The BTS3606A adopts the CCPM to support CDMA2000 1x and the CECM to support 1xEV DO l The same BTS3606A cabinet can be configured with CCPM and CECM that is the BTS3606A can simultaneously support CDMA2000 1x and 1xEV DO l The CPCM supports the power combination when the BTS3606 operates at 1900 MHz l CTRM and CHPA support the multi carrier application 3 3 System Structure The BTS360...

Страница 26: ...er protocols l Implement modulation demodulation of CDMA2000 1x and 1xEV DO baseband data and the coding decoding of CDMA channels l Provide synchronization clock signal to the BTS l Perform system resource management operation and maintenance and environment monitoring 3 3 2 RF Subsystem The RF subsystem consists of the CTRM CHPA C DDU and CPCM It has the following functions I On the forward link...

Страница 27: ...LONASS to provide precise clock source for the BTS 3 3 4 Power Supply and Environment Monitoring Subsystem The power supply and environment monitoring subsystem includes the power supply environment monitoring part and the temperature controller l Power supply The power supply consists of AC distribution unit DC distribution unit Power Supply Units PSUs including PSUAC DC and PSUDC DC Power Manage...

Страница 28: ... ODU3601Cs can be connected GPS GLONASS 2 Connect to the satellite receiver and satellite synchronization antenna to provide long term stable clock signals Clock interface External synchronization clock input 1 Provide high precision clock when the GPS GLONASS clock signals are unavailable Maintenance interface Ethernet interface 1 Provide local maintenance path Reference clock interface 1 Output ...

Страница 29: ...mechanism Power control is classified into forward power control and reverse power control Forward power control is used to control the transmit power of the BTS Reverse power control aims to control the transmit power of the MS Operating in the 1xEV DO system the BTS3606A adopts rate control in the forward direction and the rate control plus power control in the reverse direction I Forward power ...

Страница 30: ... the received pilot signal l Close loop power control The BTS issues a power control command to the MS and makes further adjustment according to the feedback from the MS Figure 4 1 illustrates the principle of closed loop power control MS BTS BSC Eb Nt FER Power Control Bit Eb Nt changing quantity Inner loop Outer loop Figure 4 1 Close loop power control In the inner loop power control the BTS iss...

Страница 31: ...tual soft handoff function to the forward link I Soft handoff The soft handoff happens between neighboring cells which serve on the same frequency and belong to different BTSs The two different BTSs can belong to the same BSC or two different BSCs connected with A3 A7 interface In the soft handoff procedure the MS maintains the connection with the previous cell till it establishes the communicatio...

Страница 32: ...mes of the different rate sets and have different channel configurations and spreading spectrum structures The transmission combinations supported by the BTS3606A include l Forward RC1 and reverse RC1 l Forward RC2 and reverse RC2 l Forward RC3 or RC4 and reverse RC3 l Forward RC5 and reverse RC4 Each RC supports traffic channel at different data rates The performance of the CDMA2000 1x system var...

Страница 33: ...stem configuration change order to slotted mode MSs instructing them to receive the paging messages As a result the MS battery energy is saved l Forward Common Control Channel CCCH The BTS uses this channel to send system message and message to dedicated MS The Forward Dedicated Channel is further divided into l Forward Dedicated Control Channel F DCCH It carries traffic information and signaling ...

Страница 34: ...EV DO Channel The following shows the classification of the CDMA2000 1xEV DO channel I Forward channel The forward channel of the 1xEV DO adopts Time Division Multiplex TDM mode It includes four types of channels Pilot Channel Media Access Control MAC Channel Control Channel and Traffic Channel l Pilot Channel Different from the continuous pilot of IS 95 1x system the Pilot Channel is only transmi...

Страница 35: ...ss Control MAC Channel Acknowledgement ACK Channel and Data Channel Pilot Channel It helps with the coherence demodulation and phase estimation of the BTS3606A MAC Channel It consists of Reverse Rate Indicator RRI sub channel and DRC sub channel The AT uses the DRC sub channel to report the quality of the forward channel to the AN The AN can adjust the rate and the sector for transmitting data to ...

Страница 36: ...ceiving Diversity The BTS3606A supports receiving diversity function The receiving diversity is realized through two sets of independent receiving equipment each of which comprises antenna feeder CDDU and main diversity receiving channels The two sets of receiving equipment demodulate the received signals simultaneously Then the baseband processing unit decodes the signals with diversity combining...

Страница 37: ...aintainability The replaceability and normalization of components is also important in selecting components All components are high quality ones selected through aging test Strict quality control is implemented on hardware assembling procedures to ensure high reliability and stability in the long run III Thermal design The thermal design focuses on following items to minimize the impact of tempera...

Страница 38: ...cabinet In addition board indicators are provided to help users identify board status VIII Fault monitoring and handling The BTS3606A system can self detect and diagnose the faults of software and hardware It can record output and print various fault information In addition it collects environment condition information and generates alarms if there is any problem When faults occur to the hardware ...

Страница 39: ...er module of another board is used instead V N 1 backup for baseband fans The baseband fans work in the N 1 backup mode One standby fan is equipped When one fan is faulty this standby fan starts working to ensure the performance of the baseband ventilation system VI Link backup of Abis interface The BTS3606A supports the Abis interface link backup function to improve the reliability of links When ...

Страница 40: ...he following contents l Check the data consistency of different processing boards restore the data and output logs and alarms l Check the consistency of the data input by the user to ensure correct reference relation among data l Use the rollback function to restore the data to the initial state when the modification of some data fails at a certain point IV Fault isolation In the BTS3606A when a f...

Страница 41: ...vailable in the related manuals of M2000 6 1 Structure of the Operation and Maintenance System 6 1 1 Local Operation and Maintenance System Figure 6 1 shows the structure of the BSS AN local operation and maintenance system PSTN Internet IPoE IPoA IPoA Router Modem IPoE IPoE IPoE Router Modem IPoE BSC BTS BTS IPOA IP overATM IPOE IP over Ethernet Figure 6 1 BSS AN local operation and maintenance s...

Страница 42: ...ce channel is faulty they can use the remote maintenance method to maintain the BTS III Near end maintenance In the BTS equipment room the LMT connects to the BTS through network cables to realize the near end maintenance Users can log in to the BTS through Telnet Client and execute the MML command to maintain the BTS User can also employ the reverse maintenance function to log in to the BAM from ...

Страница 43: ... l Fault management Users can set combined conditions to get the required alarm data of the NEs from the Alarm Client view the results and perform related operations 6 2 Operation and Maintenance Function The BTS3606A provides powerful operation and maintenance functions I Security management To prevent illegal operation the system provides powerful security management function to manage and contr...

Страница 44: ...m box to provide audible and visual alarms III Loading management The loading management allows the loading of the software and the configuration data Software loading involves the downloading and activation of the Central Processing Unit CPU software and the Field Programmable Gate Array FPGA logic Configuration data loading includes both the downloading and uploading of configuration data IV Con...

Страница 45: ...e test management facilitates fault location and the optimization of system performance The tests include board loopback test self detection test and Abis link test VII Tracing management The tracing management aims to help the fault location and performance measurement analysis The traced objects include various interfaces and indices Some indices such as CPU load board temperature BTRM transmit ...

Страница 46: ...pecifications This chapter provides the engineering specifications protection specification capacity specifications and performance specifications of the BTS3606A 7 1 Structure and Environment Specifications The structure and environment specifications include cabinet dimensions weight power ambient temperature and relative humidity ...

Страница 47: ... cooling function and without battery cabinet 11000 W with air conditioner setto cooling function and with battery cabinet 6000 W with air conditioner set to heating function and without battery recharging considered Power consumption in full configuration Heat exchanger 4500W without battery cabinet 9500W with battery cabinet 6000W heating without recharging Air conditioner 40 C to 55 C Operating...

Страница 48: ...rrier can serve up to 48 subscribers The maximum reverse channel capacity of one carrier three sectors is 96 channels 7 3 Transmitter and Receiver Specifications This section provides the specifications of the BTS3606A transmitter and receiver at different bands 7 3 1 Transmitter and Receiver Specifications at 450 MHz Band This following lists the BTS3606A transmitter and receiver specifications w...

Страница 49: ...p of the cabinet II Receiver specifications Working band 824 MHz to 849 MHz Channel bandwidth 1 23 MHz Channel precision 30 kHz Sensitivity of signal receiver Single carrier Better than 127 dBm RC3 main and diversity receiving Multi carrier Better than 126 dBm RC3 main and diversity receiving 7 3 3 Transmitter and Receiver Specifications at 1900 MHz Band This following lists the BTS3606A transmitt...

Страница 50: ...ceiving Multi carrier Better than 126 dBm RC3 main and diversity receiving 7 4 Specifications for ODU3601C Cascading The following lists the related specifications when the BTS3606A connects to the ODU3601C Maximum distance of single cascading 10 km 70 km corresponding to two types of CCPM Maximum number of cascading levels 3 CDMA2000 1x Maximum total distance after cascading 90 km Maximum distanc...

Страница 51: ...rivacy for CDMA2000 High Rate Packet Data l C S0038 0V1 0 Signaling Conformance Specification for High Rate Packet Data Air Interface 8 2 Um Interface The BTS3606A is compliance with the following Um interface specifications I Physical layer TIA EIA IS 2000 2 A Physical Layer Standard for CDMA 1X Standards for Spread Spectrum Systems C S0024 0V4 0 CDMA2000 High Rate Packet Data Air Interface Speci...

Страница 52: ...er ANSI T1 627 1993 Telecommunications broadband ISDN ATM Layer Functionality and specification III ATM adaptation layer ITU T recommendation I 366 2 B ISDN ATM Adaptation Layer Type 2 Specification ITU T I 363 5 B ISDN ATM Adaptation Layer 5 Specification Type 5 AAL IV TCP IP RFC791 Internet Protocol RFC793 Transport Control Protocol V Abisinterface high layer protocol 3GPP2 A R0003 Abis interfac...

Страница 53: ...General Requirements to machines instruments and other industrial articles on stability to external mechanical impacts while operating l GOST R 50829 95 Safety of radio stations radio electronic equipment using transceivers and their components The general requirements and test methods l GOST 12 2 007 0 75 Electrotechnical devices The general safety requirements 8 6 EMC The BTS3606A is compliance ...

Страница 54: ...s Section 11 Voltage dips short interruptions and voltage variations Immunity tests l ITU T Recommendation K 20 Resistibility of Telecommunication Switching Equipment to Overvoltages and Overcurrents l CFR 47 FCC Part 15 Radio Frequency Device l TS 25 113v3 1 0 3rd Generation Partnership Project Technical Specification Group Radio Access Networks Base station EMC l ITU R Rec SM 329 7 Spurious emis...

Страница 55: ...f environmental tests Transportation l 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 l ETS 300 019 2 3 Equipment Engineering EE Environmental conditions and environmental tests for telecommunications equipment Part 2...

Страница 56: ...knowledgement AN Access Network AT Access Terminal ATM Asynchronous Transfer Mode B BAM Back Administration Module BCIM BTS Control Interface Module BCKM BTS Clock Module BS Base Station BSC Base Station Controller BSS Base Station Subsystem C CC Control Channel CCPM Compact BTS Channel Process Module CDMA Code Division Multiple Access CDDU Compact BTS Dual Duplexer Unit CECM Compact BTS EVDO Chan...

Страница 57: ...dicator Bit F F CCCH Forward Common Control Channel F DCCH Forward Dedicated Control Channel F FCH Forward Fundamental Channel F PCH Forward Paging Channel FPGA Field Programmable Gate Array F PICH Forward Pilot Channel F QPCH Forward Quick Paging Channel F SCH Forward Supplemental Channel F SYNCH Forward Sync Channel G GLONASS Global Navigation Satellite System GMSC Gateway Mobile Switching Cente...

Страница 58: ... MTBF Mean Time Between Failures MTTR Mean Time To Repair O ODU OutDoor Unit OML Operation Maintenance Link P PCF Packet Control Function PDSN Packet Data Service Node PLMN Public Land Mobile Network PMRM Power Measurement Report Message PP2S Pulses Per 2 Seconds PPP Peer to Peer Protocol PSK Phase Shift Keying PSTN Public Switched Telephone Network PSU Power Supply Unit PSUDC DC DC Power Supply U...

Страница 59: ...ion R DCCH Reverse Dedicated Control Channel R EACH Reverse Enhanced Access Channel R FCH Reverse Fundamental Channel RLDU Receive LNA Distribution Unit R P Radio Packet RPC Reverse Power Control RRI Reverse Rate Indicator R SCH Reverse Supplemental Channel T TDM Time Division Multiplexing TIA Telecommunications Industry Association U UNI User Network Interface ...

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