CN101183900A - Baseband extension radio frequency subsystem RRU testing method, system and analog BBU device - Google Patents
Baseband extension radio frequency subsystem RRU testing method, system and analog BBU device Download PDFInfo
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Abstract
The invention provides a method for measuring the baseband remote radio frequency subsystem RRU of WCDMA and TD-SCDMA in 3G technology, a measuring system and an analog BBU device for measuring the baseband remote radio frequency subsystem RRU; the invention is characterized in that: an analog BBU is arranged as an unvarnished transmission channel and connected with the RRU to be tested; the control signaling and IQ data are transferred to RRU after coding by the control platform; the radio frequency output of RRU is connected with a spectrum analyzer to detect the output signals, and connected with an input signal of a signal generator; the digital signals transferred by BBU are transferred to the spectrum analyzer by RRU after DAC converting to detect, and the starting, resetting, module detecting of RRU and measurement of the whole machine in the receiving and sending performances are finished. The invention has the advantages that the problems that the current non-mainstream equipment manufacturers need to have the baseband resource pool BBU to finish testing the downlink uplink IQ data of the RRU and the optical fiber link are solved, the testing cost is greatly reduced, and the testing efficiency is improved.
Description
[technical field]
The present invention relates to moving communicating field, be specially a kind of method of testing, the system that baseband extension radio frequency subsystem RRU provided of WCDMA in the 3G technology, TD-SCDMA and be used to test the analog BBU device of baseband extension radio frequency subsystem RRU.
[background technology]
Development along with third generation digital communication technology (3G technology), become the third generation mobile communication system that radio communication combines with multimedia communications such as Internets, it can handle various ways such as image, music, video, and services such as web page browsing, videoconference, electronic commerce information are provided.In the 3G technology field, distributed base station is made up of RRU (Radio Remote Unit) and BBU (Base Band Unit).RRU and BBU bear the Radio frequency Processing Unit, RF Processing Unit and the Base-Band Processing part of base station respectively, and independent separately the installation is placed apart, is connected by electrical interface or optical interface, forms the distributed base station form.RRU also can be used as the far-pulling module of macro base station except that with BBU docks, have volume little, in light weight, characteristics simply and easily are installed.RRU and BBU are based on 3GPP R4/R5 FDD protocol development, the solution of TD-SCDMA Radio Access Network can be provided at different demands, the different network environments of operator, satisfy the requirement of the wireless coverage of city, suburb, rural area, highway, railway, hot zones etc.
But, though RRU has become inevitable in the large tracts of land use, but need to introduce new optical network resource, simultaneously, because baseband interface does not have unified standard at present, substantially the BBU that is whose family just must adopt the RRU of whose family, and the compatibility of slave unit, RRU must be supporting with BBU and RNC, and producer generally all maintains secrecy about the interface of RRU and BBU, and the test of baseband extension radio frequency subsystem RRU is necessary in the 3G technology, if comprehensively test, just must have base band resource pool BBU equipment and just can finish, but, then need to buy the BBU of main equipment manufacturer for the manufacturer that can not make BBU equipment, and RRU is for different producer's supplies, need to buy different BBU equipment, the cost of software and hardware is very high like this, has influenced further developing of whole industry.
Patent Office of the People's Republic of China discloses a kind of name and has been called " baseband protocol data test device and system in the 3-G (Generation Three mobile communication system) " patent of invention (application number: 200510090504.8, open day: on February 21st, 2007), from disclosed technology contents, its testing apparatus comprises BBU, main control computer, RFU, GPS module, base band data analyzer (RNC), core network etc., required equipment is more and huger, and cost is quite high; Wherein the interface that uses only be the SERDES interface, and main equipment manufacturer all adopts the CPRI agreement now, this interface is difficult to compatibility, and its data analysis need be arrived main equipment manufacturer and be bought a complete set of core network device and can finish, for the producer of two wires, then be difficult for having bought, simultaneously, this device needs to adopt a plurality of DSP could send six years eight antenna baseband signals, comparatively trouble.
[summary of the invention]
The invention provides a kind of method that can test the baseband extension radio frequency subsystem RRU of WCDMA, TD-SCDMA in the 3G technology, by this method derive test macro that forms and the analog BBU device that is used to test baseband extension radio frequency subsystem RRU, for non-mainstream equipment vendors, can in the RRU system test, finish the up-downgoing IQ data test of complete machine and the test of optical fiber link, thereby solved the problem of above-mentioned existence in the present prior art, can also improve testing efficiency simultaneously.
For achieving the above object, technical scheme proposed by the invention is:
A kind of baseband extension radio frequency subsystem RRU testing method, it is the BBU that a simulation is set, control by operation control platform, link to each other with RRU to be tested, with the BBU of this simulation as pass-through channel, to assign to RRU after the control signaling of operation control platform and the IQ digital coding, antenna rf inputs mouth at RRU connects external checkout equipment detection output signal, radio-frequency (RF) output end at RRU connects the signal generator input signal simultaneously, BBU carries out sending into external checkout equipment after the DAC conversion with the digital signal that RRU transmitted that receives and carries out analyzing and testing, finishes the RRU electrifying startup, reset, the mensuration of the reception emitting performance of module detection and complete machine.
The BBU of described simulation and operation control platform adopt Ethernet to carry out communication, finish information interaction with RRU by optical fiber.
Described analog BBU is that the control signalling coding with operation control platform is that fiber-optic signal is issued to RRU system to be tested, simultaneously after the uploading signaling and decode of RRU, being delivered to operation control platform again handles, the IQ signal that receives RRU is exported intermediate-freuqncy signal through digital frequency conversion, DAC conversion, send into external checkout equipment.
The invention provides a kind of baseband extension radio frequency subsystem RRU test macro, comprise operation control platform and analog BBU, described operation control platform is by Ethernet and analog BBU communication, be used to receive the information of sending from RRU to be measured, and handle delivering to each module behind the various information analysis; Described analog BBU is undertaken alternately by optical fiber and RRU, the control signalling coding that is used for operation control platform is that fiber-optic signal is issued to the RRU system, simultaneously after the uploading signaling and decode of RRU, being delivered to operation control platform again handles, the IQ signal that will receive RRU is simultaneously sent into external checkout equipment through digital frequency conversion, DAC conversion output intermediate-freuqncy signal.
The external checkout equipment of the present invention comprises a signal generator and two spectrum analyzers, and signal generator connects the radio frequency interface of RRU or the radio frequency interface that emission Time-frequency Spectrum Analysis instrument connects RRU during reception, and another spectrum analyzer connects the BBU radio frequency interface of simulation.
Described operation control platform comprises:
Assets management module: the various software and hardware information that are used to obtain RRU;
Initialization administration module: be used for the RRU of simulation is carried out the initialization setting;
Configuration Manager: the operational factor that is used to reconfigure RRU;
State management module: be used for each module running status is monitored or inquired about, make things convenient for the user in time to understand the running status of system, support the automatic backup function of data configuration file and maintenance log, the inquiry of, hardware version soft to RRU, patch release is provided, and the activation of version, support is to status poll, the performance statistics of optical interface physical link and reset, support module and Primary Component reset and the obturation of module with separate block service;
Alarm management module: detect and report the fault of RRU equipment or unusual in real time, and with the kind of alarm, the log record of alarm and the daily record of alarm are uploaded;
Software management module: when being used for when software upgrading, breaking down, make system be automatically retracted back into original version;
Database management module: the daily record that is used for non-volatile media that RRU is stored manages, and simultaneously all signalings of RRU and BBU exchange is followed the tracks of and is stored;
Test and management module: be used for RRU is carried out functional test;
Communication module: be used for information with above-mentioned module according to certain protocol packing, wait to be sently, deliver to each module behind the various information analysis that RRU is uploaded simultaneously and handle;
Interface: the communication interface between operation control platform and the RRU.
Described Configuration Manager provides static and dynamic two kinds of configuration modes, and the modification data instant comes into force during described dynamic configuration data; Revise data during described static configuration data and after base station resets, come into force, simultaneously configuration parameter is carried out consistency check.
Described test and management module comprises the test of communication link, the delay testing of optical fiber, the test of RRU internal hardware, and the test of the networking performance of the RRU system of networking.
The BBU device of described simulation comprises:
Control subsystem: be used for RRU is carried out Operation and Maintenance and signaling process, wherein: Operation and Maintenance is for to carry out equipment control, configuration management, alarm management, software administration, monitoring management to RRU; Described signaling process is RRU to be done the management of professional signaling and control signaling, by operation control platform control, the RRU data upload is carried out the DAC conversion;
Test pattern data memory: be used to store the test pattern data of 3G standard requirement, as the wave file under the test pattern;
Under pass passage: link to each other with the test pattern data memory,, encode, be transported to interface module then with signaling and synchronizing clock signals in the control subsystem with the Wave data file that reads in the test pattern data memory;
Uploading channel: be used for the data-signal of receiving interface module, through decoding, isolate IQ signal and signaling, wherein the IQ data are delivered to the DAC conversion, signaling is delivered to control subsystem and is handled;
The DAC conversion: the IQ data of the RRU that will transmit by uploading channel are transformed into the signal of certain digital intermediate frequency through Digital Up Convert DUC, are transformed into the radiofrequency signal of simulation then by DAC, are transported to radio frequency interface;
Interface module: connect the interface of RRU, be used to provide opto-electronic conversion and electric light conversion between BBU and the RRU, wherein: opto-electronic conversion is that the uplink baseband data that the RRU that will receive sends are imported uploading channel into; The electric light conversion is the base band data that reads in RRU sends by the test pattern data memory.
Radio frequency interface:, be the output port of DAC conversion simultaneously with the interface that connects external tester.
Be different from prior art, the present invention has following technique effect:
1) the present invention is by being provided with a BBU who simulates as pass-through channel, encode through FPBA by operation control platform control signaling and the IQ signal in data storage, through after the opto-electronic conversion, arrive RRU by Optical Fiber Transmission, analyze the downstream signal of RRU by spectrum analyzer, the test of upward signal is the rf input port that signal generator is connected RRU, the signal of signal generator input becomes digital signal by the processing of RRU, by the BBU of Optical Fiber Transmission to simulation, sending into spectrum analyzer after the DAC conversion detects, can finish the up-downgoing IQ data test of RRU complete machine and the test of optical fiber link, simplified the equipment of base band test, can not provide in main equipment manufacturer under the situation of testing equipment BBU,, solve the difficult problem that RRU must be tested by the BBU of main equipment manufacturer with very low cost.
2) interface of the present invention adopts CPRI interface (PMC7832), can comprise SERDES interface and CPRI interface, when needed, in these two interface protocols any can be set.
3) collection of base band data of the present invention can be used the spectrum analyzer of R/S, and this is a kind of product that can buy on market, and cost is low, versatility is good, do not need other the network equipment just can finish, increase signal source and spectrum analyzer, the performance that can also test less radio-frequency fully.Adopt the ARM chip as control chip simultaneously, with the baseband signal of six years eight antennas of fpga chip transmission, simple, convenient.
The present invention is applicable in RRU test and the later production, and after above-mentioned test was finished, RRU can directly deliver, and did not need complicated more test, so can improve testing efficiency.
Test process of the present invention is simple, and design is convenient, is a kind of comparatively desirable testing equipment for non-3G main equipment manufacturer.
[description of drawings]
Fig. 1 is the BBU structure in prior art field and is connected block diagram with RNC, RRU;
Fig. 2 is a system block diagram of the present invention;
Fig. 3 connects block diagram for operation control platform application module of the present invention;
The BBU structure that Fig. 4 simulates for the present invention reaches and is connected block diagram with RRU;
Fig. 5 is a system applies block diagram of the present invention.
[embodiment]
As shown in Figure 1, in distributed base station, the BBU 200 of actual installation mainly is made of four modules:
1) control subsystem: comprise clock module 210, signaling process 211 and Operation and Maintenance 212, be mainly used in Operation and Maintenance and signaling process, and provide system clock, can finish transmission network, radio network signaling, system's control and Operation and Maintenance, finish functions such as system clock generation and distribution, Operation and Maintenance mainly is that RRU 300 is carried out equipment control, configuration management, alarm management, software administration, monitoring management etc., signaling process mainly is the management of traffic signaling and control signaling, give radio network controller (RNC) 100 with data upload, network controller RNC 100 is all Service Access points that wireless access network UTRAN offers core net CN, and clock module mainly provides the synchronised clock of base station.
2) transmission subsystem 202:
The major function of transmission subsystem 202 is that wireless data packet is sent to base station controller (BSC) from BTS, it mainly is made up of the Iub interface plate, the Iub interface plate comprises NDTI, NAOI, and the interface with RNC 100 can be provided, and finishes the information interaction between BBU 200 and the RNC 100.
3) baseband subsystems 203:
Baseband subsystems 203 is used to implement the radio communication of software arrangements.Mainly form by HULP, HDLP, NBBI, baseband subsystems 203 is mainly finished the physical layer process process of descending transmission, up reception and the closed-loop process process of physical layer, it is made up of uplink processing module and downlink processing module: uplink processing module is the uplink baseband data to be carried out demodulation expand, then through decoding, protocol processes sends to RNC 100, the downlink processing module receives the business datum from transmission subsystem 202, delivers to interface module 204 through protocol processes, coding, modulation.
4) interface module 204:
Interface module 204 major functions provide opto-electronic conversion and electric light translation function, and opto-electronic conversion is to receive the uplink baseband data that RRU300 sends, and the electric light translation function is to send the downgoing baseband data to RRU 300.
As shown in Figure 2, the present invention is according to BBU system configuration characteristic, be provided with an analog BBU 400, can be used as the analog machine of BBU 200 and only be applied to the test in, it is by operation control platform 500 controls, the BBU 400 of simulation carries out communication by Ethernet interface RJ45 and operation control platform 500, links to each other with RRU 300 by optical fiber.In analog BBU 400, be provided with, down going channel, make it as a pass-through channel, just can form the information interaction between the three, simultaneously by set test pattern data memory and DAC conversion in the analog BBU 400, can be to assign to RRU300 behind the fiber-optic signal the control signalling coding of operation control platform 500, simultaneously, analog BBU 400 is after the uploading signaling and decode of RRU300, be delivered to operation control platform 500 again and handle, also can will receive the IQ signal of RRU 300 through digital frequency conversion, DAC conversion output intermediate-freuqncy signal is sent into external check and analysis equipment.In addition, power and frequency configuration by operation control platform 500 control RRU 300, and initial configuration, reconfigure, software download, just can finish RRU300 electrifying startup, reset, module detects and the test of complete machine up-downgoing IQ data test and optical fiber link, thereby realized purpose of the present invention.
According to above-mentioned mentality of designing, the present invention provides a kind of test macro of baseband extension radio frequency subsystem RRU simultaneously.As shown in Figure 2, system of the present invention comprises operation control platform 500 and analog BBU 400, described operation control platform 500 is used to receive the various information of sending from RRU300 by Ethernet and analog BBU 400 communications, and handles delivering to each module behind the above-mentioned information analysis.It is mutual that described analog BBU 400 carries out signal by optical fiber and RRU 300, the downstream signal test is encoded through programmable logic device (FPBA) by the control signaling of operation control platform 500 and the IQ signal in data storage, through after the opto-electronic conversion, be issued to the RRU300 system by fiber-optic signal, analyze by the external spectrum analyzer of RRU radio frequency delivery outlet; The test of upward signal is the rf input port that signal generator is connected RRU, processing by RRU becomes digital signal, by Optical Fiber Transmission in the DAC of BBU 400 of simulation, simultaneously after the uploading signaling and decode of RRU 300, being delivered to operation control platform 500 again handles, the IQ signal that also will receive RRU 300 is through digital frequency conversion, DAC conversion output intermediate-freuqncy signal, send into the external check and analysis instrument that is attached thereto, just can detect sensitivity and other indexs of received signal, realize test RRU 300.
As shown in Figure 5, the external checkout equipment of the present invention comprises a signal generator 600 and two spectrum analyzers 700,800, signal generator 600 connects the radio frequency interface of RRU300 or the radio frequency interface that emission Time-frequency Spectrum Analysis instrument 800 connects RRU300 during reception, and another spectrum analyzer 700 connects the BBU400 radio frequency interface of simulation.
As shown in Figure 3, described operation control platform 500 comprises the following function module:
1) assets management module 501:
Need in the test run process earlier the internal module of RRU to be inquired about,, comprise the supplier information of RRU 300 to obtain the software and hardware information of RRU 300, hardware version, software version is produced sequence number etc.
2) the initialization administration module 504:
This module is mainly used in carries out the initialization setting to RRU 300, comprises address assignment, communication link foundation, configuration management, software download etc.
3) Configuration Manager 502:
Because BBU manufacturer differs, the operational factor of system also is not quite similar, therefore, in test, the operational factor of necessary unified configuration-system is so must reconfigure the parameter of RRU 300, can finish by Configuration Manager 502 is set, can carry out maintenance management to system simultaneously.Data in the configuration file also will be carried out validity checking when starting, to guarantee the stable operation of system.Configuration Manager 502 of the present invention provides static and dynamic two kinds of configuration modes, the data of revising during dynamic configuration data can come into force, revising data during static configuration data must just can come into force after base station resets, and configuration parameter is carried out consistency check.Configuration parameter comprises mainly that the sub-district of RRU300 is provided with, frequency configuration, antenna are provided with etc.
4) state management module 508:
(1) supports each module running status is monitored or inquired about, can make things convenient for the user in time to understand the running status of system;
(2) automatic backup function of support data configuration file and maintenance log, BACKUP TIME interval wherein, catalogue can set up on their own according to user's requirement;
(3) provide the inquiry of, hardware version 300 soft, patch release to RRU, and the activation of version;
(4) support status poll, the performance statistics of optical fiber interface physical link and reset etc.;
(5) support module and Primary Component resets;
(6) obturation of support module with separate block service.
5) alarm management module 503:
Alarm management module can detect and report the fault of RRU 300 equipment or unusual in real time, and with the kind of alarm, the log record of alarm and the daily record of alarm are uploaded.
6) software management module 505:
RRU respectively preserves 300 this locality 2 software versions and versions of data.When software management module 505 is used for breaking down when software upgrading, can make system be automatically retracted back into original version, when having reduced the software download failure, need the possibility of handling to website.
7) database management module 507:
This module is used for the daily record of the non-volatile media of RRU 300 storage is managed, comprise daily record storage, upload, deletion etc., follow the tracks of and be stored in this locality for RRU 300 with all signalings of BBU200 exchange simultaneously, for use in network analysis.
8) the test and management module 506:
This module is mainly used in carries out functional test to RRU 300, and content measurement comprises:
(1) test of communication link, the delay testing of optical fiber;
(2) test of RRU 300 internal hardwares, as veneer, the test of the running status of module;
(3) networking performance of RRU 300 systems test.
9) communication module 509:
Be mainly used in the information of above-mentioned each module according to the processing of packing of certain agreement,, wait to be sently, deliver to each module behind the various information analysis that RRU 300 is uploaded simultaneously and handle then according to the specification queuing.
10) interface 510:
Fig. 4 has showed simulation RRU400 apparatus structure block diagram.Described simulation RRU structure specifically comprises:
1). control subsystem 401:
2). test pattern data memory 423 (NOR Flash S29GL128N10TF101):
Test pattern data memory 423 is mainly used to store the test pattern data of 3G standard requirement, as the wave file under the test pattern.Test pattern data memory 423 internal memories contain the template of WCDMA, or the template of TD-SCDMA.
3). pass passage 424 down:
Passing passage 424 under the logic module in the programmable logic device (FPGA Spartan-3A DSP XC3SD1800A-FG6/FG676/Xilinx) links to each other with test pattern data memory 423, the Wave data file that can from test pattern data memory 423, read, encode with signaling and synchronizing clock signals in the control subsystem 401, be transported to interface module 405 then.
4). uploading channel 422:
Logic module uploading channel 422 in the programmable logic device (FPGA Spartan-3A DSP XC3SD1800A-FG6/FG676/Xilinx) is used for the data-signal of receiving interface module 405, through decoding, isolate IQ signal and signaling, wherein the IQ data are delivered to DAC conversion 421, signaling is delivered to control subsystem 401 and is handled.
5) .DAC conversion 421 (AD9779):
6). interface module 405 (standard interface OBSAI or common radio-frequency interface CPRI):
It is the solution realization of core that interface module mainly adopts with the BRIC-2 of PMC company chip (PMC7832), follow interface specification CPRI or manufacturer's custom protocol of standard, major function provides opto-electronic conversion and electric light translation function, opto-electronic conversion is that the uplink baseband data that the RRU 300 that will receive sends are imported uploading channel 422 into, and the electric light translation function is the base band data that reads in RRU sends by test pattern data memory 423.
7). radio frequency interface 404:
In the reality test, analog BBU 400 can not be finished the function of despreading and demodulation for upward signal, for downstream signal, also can not finish the function of modulation.And actual BBU200 must have network controller RNC100 input for all baseband signals.In order to test the signal of RRU300, the present invention links to each other the radio frequency interface 404 of analog BBU 400 with radio frequency measuring instrument, as spectrum analyzer 700 (FSP30 9KHz-30GHz (R﹠amp; S)) with signal generator 600 (SMU200A (R﹠amp; S)), by means of above-mentioned instrument, can finish the test of RRU all functions.And for the BBU device requirement of distinct device supplier's reality, 400 needs of analog BBU are revised signaling, just can compatibility, need not revise hardware, and just can reach shared level.
Referring to Fig. 5, can understand test process of the present invention:
1) BBUU400 with simulation carries out initialization earlier, and reconfigure the parameter of BBU400, the control subsystem 401 of analog BBU 400 is arrived instruction issuing by control interface 413 in the configuration of 500 pairs of sub-districts of operation control platform then, control subsystem 401 transmits the programmable logic device (FPGA Spartan-3A DSP XC3SD1800A-FG6/FG676/Xilinx) that information such as sub-district foundation and frequency point setting are delivered to analog BBU 400, FPGA is through coding, by the dedicated signaling passage, be that light signal links to each other with RRU 300 with electrical signal conversion through interface 405 (standard interface OBSAI or common radio-frequency interface CPRI).Simultaneously all of RRU 300 report configuration interactive information to be sent to the interface module 405 of analog BBU 300 by optical fiber, through this interface light signal are converted to the signal of telecommunication, deliver to FPGA, are transported to control subsystem 401 through the decoding of FBGA and handle.
2) descending test:
The downstream signal trend is for shown in the illustrated solid line.After the order of operation control platform 500 output test downstream parameter, the BBU300 fill order of simulation, FPGA reads the IQ data from test pattern data memory 423, by interface module 405 is electrical signal conversion light signal, be sent to RRU 300, RRU 300 is converted to the signal of telecommunication to light signal then, connects signal analyzer B800 at its radio frequency interface, can test descending radio frequency parameter index.
3) up test:
The upward signal trend is for shown in the illustrated double dot dash line.The RRU radio frequency interface is connected signal generator 600, by RRU 300 inner down-conversions, the ADC conversion, become digital IQ signal, by optical fiber interface the signal of telecommunication is become light signal, be uploaded to the interface of analog BBU 400, the interface module 404 of analog BBU 400 becomes the signal of telecommunication to light signal, export digital IQ signal and professional signaling, the specialty signaling exports control subsystem 401 to and handles, the IQ signal is connected to spectrum analyzer 700 (FSP309KHz-30GHz (R﹠amp by DAC conversion 421 output analog signals by radio frequency interface 404; S)) quality of analytic signal by the connection of this mode, can be tested all reception indexs of RRU 300.
The external synchronization signal of RRU 300 is connected to reference clock 403 by analog BBU 400, by the sine wave signal of signal source output 61.44MHz, synchronous by clock chip, be distributed to other chips, make it synchronous, simultaneously common radio-frequency interface CPRI interface provides synchronizing signal and RRU 300 synchronous.
The above embodiment has only expressed the basic execution mode of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (12)
1. baseband extension radio frequency subsystem RRU testing method, it is characterized in that: the BBU that a simulation is set, control by operation control platform, link to each other with RRU to be tested, with the BBU of this simulation as pass-through channel, to assign to RRU after the control signaling of operation control platform and the IQ digital coding, antenna rf inputs mouth at RRU connects external checkout equipment detection output signal, radio-frequency (RF) output end at RRU connects the signal generator input signal simultaneously, BBU carries out sending into external checkout equipment after the DAC conversion with the digital signal that RRU transmitted that receives and carries out analyzing and testing, finishes the RRU electrifying startup, reset, the mensuration of the reception emitting performance of module detection and complete machine.
2. a kind of baseband extension radio frequency subsystem RRU testing method according to claim 1 is characterized in that: the BBU of described simulation and operation control platform adopt Ethernet to carry out communication, finish information interaction with RRU by optical fiber.
3. a kind of baseband extension radio frequency subsystem RRU testing method according to claim 1 and 2, it is characterized in that: described analog BBU is that the control signalling coding with operation control platform is that fiber-optic signal is issued to RRU system to be tested, simultaneously after the uploading signaling and decode of RRU, being delivered to operation control platform again handles, the IQ signal that receives RRU is exported intermediate-freuqncy signal through digital frequency conversion, DAC conversion, send into external checkout equipment.
4. baseband extension radio frequency subsystem RRU test macro, it is characterized in that: comprise operation control platform and analog BBU, described operation control platform is by Ethernet and analog BBU communication, be used to receive the information of sending from RRU to be measured, and handle delivering to each module behind the various information analysis; Described analog BBU is undertaken alternately by optical fiber and RRU, the control signalling coding that is used for operation control platform is that fiber-optic signal is issued to the RRU system, simultaneously after the uploading signaling and decode of RRU, being delivered to operation control platform again handles, the IQ signal that will receive RRU is simultaneously sent into external checkout equipment through digital frequency conversion, DAC conversion output intermediate-freuqncy signal.
5. a kind of baseband extension radio frequency subsystem RRU test macro according to claim 4, it is characterized in that: described operation control platform comprises:
Assets management module: the various software and hardware information that are used to obtain RRU;
Initialization administration module: be used for the RRU of simulation is carried out the initialization setting;
Configuration Manager: the operational factor that is used to reconfigure RRU;
State management module: be used for each module running status is monitored or inquired about, make things convenient for the user in time to understand the running status of system, support the automatic backup function of data configuration file and maintenance log, the inquiry of, hardware version soft to RRU, patch release is provided, and the activation of version, support is to status poll, the performance statistics of optical interface physical link and reset, support module and Primary Component reset and the obturation of module with separate block service;
Alarm management module: detect and report the fault of RRU equipment or unusual in real time, and with the kind of alarm, the log record of alarm and the daily record of alarm are uploaded;
Software management module: when being used for when software upgrading, breaking down, make system be automatically retracted back into original version;
Database management module: the daily record that is used for non-volatile media that RRU is stored manages, and simultaneously all signalings of RRU and BBU exchange is followed the tracks of and is stored;
Test and management module: be used for RRU is carried out functional test;
Communication module: be used for information with above-mentioned module according to certain protocol packing, wait to be sently, deliver to each module behind the various information analysis that RRU is uploaded simultaneously and handle;
Interface: the communication interface between operation control platform and the RRU.
6. a kind of baseband extension radio frequency subsystem RRU test macro according to claim 5 is characterized in that: described Configuration Manager provides static and dynamic two kinds of configuration modes, and the modification data instant comes into force during described dynamic configuration data; Revise data during described static configuration data and after base station resets, come into force, simultaneously configuration parameter is carried out consistency check.
7. a kind of baseband extension radio frequency subsystem RRU test macro according to claim 5, it is characterized in that: described test and management module comprises the test of communication link, the delay testing of optical fiber, the test of RRU internal hardware, and the test of the networking performance of the RRU system of networking.
8. a kind of baseband extension radio frequency subsystem RRU test macro according to claim 4, it is characterized in that: the BBU of described simulation comprises:
Control subsystem: be used for RRU is carried out Operation and Maintenance and signaling process;
Test pattern data memory: be used to store the test pattern data of 3G standard requirement, as the wave file under the test pattern;
Under pass passage: link to each other with the test pattern data memory,, encode, be transported to interface module then with signaling and synchronizing clock signals in the control subsystem with the Wave data file that reads in the test pattern data memory;
Uploading channel: be used for the data-signal of receiving interface module, through decoding, isolate IQ signal and signaling, wherein the IQ data are delivered to the DAC conversion, signaling is delivered to control subsystem and is handled;
The DAC conversion: the IQ data of the RRU that will transmit by uploading channel are transformed into the signal of certain digital intermediate frequency through Digital Up Convert DUC, are transformed into the radiofrequency signal of simulation then by DAC, are transported to radio frequency interface;
Interface module: connect the interface of RRU, be used to provide opto-electronic conversion and electric light conversion between BBU and the RRU;
Radio frequency interface:, be the output port of DAC conversion simultaneously with the interface that connects external tester.
9. a kind of baseband extension radio frequency subsystem RRU test macro according to claim 8, it is characterized in that: the Operation and Maintenance of described control subsystem is for to carry out equipment control, configuration management, alarm management, software administration, monitoring management to RRU; Described signaling process is RRU to be done the management of professional signaling and control signaling, by operation control platform control, the RRU data upload is carried out the DAC conversion.
10. a kind of baseband extension radio frequency subsystem RRU test macro according to claim 8 is characterized in that: described interface module opto-electronic conversion is that the uplink baseband data that the RRU that will receive sends are imported uploading channel into; The electric light conversion is the base band data that reads in RRU sends by the test pattern data memory.
11. according to the described a kind of baseband extension radio frequency subsystem RRU test macro of claim 4～10, it is characterized in that: described external checkout equipment is a signal generator and two spectrum analyzers, during reception, signal generator connects the radio frequency interface of RRU or the radio frequency interface that emission Time-frequency Spectrum Analysis instrument connects RRU, and another spectrum analyzer connects the BBU radio frequency interface of simulation.
12. an analog BBU device that is used for the baseband extension radio frequency subsystem RRU test is characterized in that comprising:
Control subsystem: be used for Operation and Maintenance and signaling process, comprise the clock module that the base station synchronization clock can be provided, signaling process and the control module of finishing traffic signaling and control signaling management, described clock module and reference clock join;
Pass passage down: the Wave data file that from the test pattern data memory, reads, encode with signaling and synchronizing clock signals in the control subsystem, be transported to interface module then;
Uploading channel: be used for the data-signal of receiving interface module, through decoding, isolate IQ signal and signaling, wherein the IQ data are delivered to the DAC conversion, signaling is delivered to control subsystem and is handled;
The DAC conversion: link to each other with radio frequency interface with uploading channel, the IQ data that are used for RRU that uploading channel is transmitted are transformed into the signal of certain intermediate frequency through Digital Up Convert DUC, are transformed into the radiofrequency signal of simulation then by DAC, are transported to radio frequency interface;
The test pattern data memory: with pass down passage and link to each other, be used to store the test pattern data of 3G standard requirement, with as the wave file under the test pattern;
Interface module: connect the interface of RRU, be used to provide opto-electronic conversion and electric light conversion between analog BBU and the RRU;
Radio frequency interface:, be the output port of DAC conversion simultaneously with the interface that connects external tester.
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