CN1897507B - Electric tester and testing method for SCDMA system - Google Patents
Electric tester and testing method for SCDMA system Download PDFInfo
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- CN1897507B CN1897507B CN200510082779A CN200510082779A CN1897507B CN 1897507 B CN1897507 B CN 1897507B CN 200510082779 A CN200510082779 A CN 200510082779A CN 200510082779 A CN200510082779 A CN 200510082779A CN 1897507 B CN1897507 B CN 1897507B
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- 238000012360 testing method Methods 0.000 title claims abstract description 64
- 238000004891 communication Methods 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims description 13
- 238000004321 preservation Methods 0.000 claims description 10
- 238000010998 test method Methods 0.000 claims description 8
- 238000013480 data collection Methods 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000011084 recovery Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 4
- 238000000465 moulding Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- VMXUWOKSQNHOCA-UKTHLTGXSA-N ranitidine Chemical compound [O-][N+](=O)\C=C(/NC)NCCSCC1=CC=C(CN(C)C)O1 VMXUWOKSQNHOCA-UKTHLTGXSA-N 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
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Abstract
The electric logging device thereof comprises a transmitting unit, a test terminal, a communication port and a data collecting and analyzing system. Wherein, the transmitting unit is used to transmit signals, and the test terminal is used to receive the signals and to send the received data to the data collecting and analyzing system to analyze, store and display; when the test terminal receives the signals, it neither transmits signals and nor makes authentication and registration, and it only receives the signals from the transmitting unit and calculates the power and the S/N ratio, and then sends the information about signal strength and S/N ratio to the data collecting and analyzing system through the communication port.
Description
Technical field
The present invention relates to the electrical measuring instrument and the method for testing thereof of a kind of SCDMA system.
Background technology
Existing electrical measuring instrument generally is by signal generator, adjusts its emission frequency and power, and what send is a certain sine wave signal, rather than contains the signal of real system code word through ovennodulation.And existing electrical measuring instrument is to receive its level by frequency spectrograph, do not contain the normal process process of base station and terminal, conciliates to reconcile as the modulation spread spectrum and expands etc.Therefore use frequency spectrograph and signal source to test the attenuation that can only be used for calculating the on-air radio signal, can not obtain the received signal level and the signal to noise ratio of physical end, thereby can not accurately estimate the base station coverage condition of various communication environments.
Therefore the electrical measuring instrument of a kind of SCDMA of needs system comes received signal level and the signal to noise ratio of test terminal in actual environment, thereby accurately estimate the decay of SCDMA wireless signal, obtain the coverage condition of base station under the various communication environments, revise the propagation model of SCDMA radio wave at various communication environments.
Summary of the invention
Goal of the invention of the present invention can be realized by following electrical measuring instrument and method of testing.
The present invention proposes the electrical measuring instrument of a kind of SCDMA system, and it comprises: a transmitter; The control module of a transmitter; A test terminal comprises the Receiver Module, intermediate frequency Modulation demodulation module, carrier recovery block, despreading module, differential decoding module and signal to noise ratio and the power computation module that are linked in sequence; A communication interface; With a data acquisition analysis system; Wherein, described transmitter transmits, and described test terminal receives the signal of transmitter, is delivered to described data acquisition and analysis system through described communication interface then and analyzes, preserves and show; Described transmitter comprises by baseband board (MDM), and rf board (TR) is combined the loop that plate (SYNC) and backboard order compose in series, the power amplifier module that is connected with this rf board, and control module frequently; Described transmitter is in the long hair state by control module control, received signal not, and the transmitting power of transmitter is set in advance by baseband board; Baseband board produces the SCDMA baseband signal of constant power, frequently combine plate and be used for frequency locking, make the carrier wave of a fixed frequency of rf board generation of electrical measuring instrument, backboard be used for baseband board and frequently combine plate between communication, the SCDMA baseband signal that baseband board produces is delivered to after the rf board, rf board carries out interpolation and filtering forming processes to this signal, and carries out carrier modulation, and the SCDMA radiofrequency signal is sent out with the fixed carrier frequency that frequently comprehensive plate sets; Described test terminal is when realizing that the normal signal of terminal receives, do not transmit and do not carry out authentication and registration, described test terminal start back search transmitter, after determining transmitter, receive transmitter signal and rated output and signal to noise ratio, important informations such as the intensity of received signal and signal to noise ratio are delivered to described data acquisition and analysis system by described communication interface.
Preferably, the control module of described transmitter comprises: long hair control module, SCDMA baseband signal generation module, power control module, carrier frequency control module, SCDMA base band data modulation module are formed; When the electrical measuring instrument initialization, set the carrier frequency of electrical measuring instrument by the carrier frequency control module, when operate as normal, produce the SCDMA baseband signal of constant power jointly by SCDMA baseband signal generation module and power control module, and baseband signal sent into SCDMA base band data modulation module, the SCDMA baseband signal is carried out processing such as interpolation and filtering moulding by SCDMA base band data modulation module; The long hair mechanism of wherein said transmitter is controlled by the long hair control module.
Preferably, this electrical measuring instrument also comprises a gps system (global positioning system), and this gps system can be immediately passed to geographical location information described data acquisition and analysis system.
Preferably, described data acquisition and analysis system is a laptop computer.
Preferably, described data acquisition and analysis system comprises: gps data acquisition module, test terminal data acquisition module, data preservation and display module, a configuration module and a control module; This gps data acquisition module is gathered the data of gps system, the data that this data collecting module collected test terminal, test terminal is transmitted, the data that this configuration module transmits the test terminal are resolved, data are preserved and display module combines coverage information and the geographical location information that the test terminal receives, be presented on the map, and be kept in the database, this control module is controlled data collection, preservation, procedure for displaying.
The present invention also proposes a kind of method of testing of using described electrical measuring instrument, may further comprise the steps:
(1) use the transmitter of described electrical measuring instrument, analog SCDMA base station transmits, and wherein said transmitter is subjected to software control only to launch and do not receive, and transmitting power is by the baseband board control of transmitter;
(2) by the test terminal of described electrical measuring instrument, receive the signal that transmitter sends, and the power and the signal to noise ratio of received signal are passed to data acquisition and analysis system by communication interface, wherein said test terminal receives only and does not launch; This test terminal need not registration, login when receiving the signal that transmitter sends;
(3) acquisition analysis system is revised SCDMA radio propagation model by the incoming level that described test terminal collects different distance, to obtain the base station covering radius.
Preferably, described data acquisition and analysis system also receives by the next geographical location information of a gps system transmission; Received field strength and the geographical location information that the test terminal is received combines then, is presented on the map.
Preferably, described acquisition analysis system combines descending signal to noise ratio and the geographical location information that the test terminal receives, and is presented on the map reflection speech quality situation.
Preferably, described transmitter control module comprises: long hair control module, SCDMA baseband signal generation module, power control module, carrier frequency control module, SCDMA base band data modulation module are formed; When the electrical measuring instrument initialization, set the carrier frequency of electrical measuring instrument by the carrier frequency control module, when operate as normal, produce the SCDMA baseband signal of constant power jointly by SCDMA baseband signal generation module and power control module, and baseband signal sent into SCDMA base band data modulation module, the SCDMA baseband signal is carried out processing such as interpolation and filtering moulding by SCDMA base band data modulation module; The long hair mechanism of wherein said transmitter is controlled by the long hair control module.
Preferably, described data acquisition and analysis system comprises a gps data acquisition module, test terminal data acquisition module, data preservation and display module, a configuration module and a control module; This gps data acquisition module is gathered the data of gps system, the data that this data collecting module collected test terminal, test terminal is transmitted, the data that this configuration module transmits the test terminal are resolved, and the control module of this data acquisition and analysis system is controlled data collection, preservation, procedure for displaying.
Use electrical measuring instrument of the present invention and method of testing, can estimate the covering radius of SCDMA base station in the various communication environments, thereby draw general result, improve the accuracy of propagation forecast at each typical environment according to test data and computer artificial result.Can be used for instructing the SCDMA network planning.Use this electrical measuring instrument, save cost, install simple.And under the convenient situation without any resource in earlier stage, can launch by analog SCDMA base station, near real base station emission situation.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in further detail.
Fig. 1 is the structural representation of a preferred embodiment of electrical measuring instrument of the present invention;
Fig. 2 is the theory diagram of electrical measuring instrument radiating portion of the present invention;
Fig. 3 is the signal flow graph of electrical measuring instrument of the present invention test terminal;
Fig. 4 is the data acquisition and analysis system block diagram.
Embodiment
Fig. 1 shows the structure of a preferred embodiment of electrical measuring instrument of the present invention.This electrical measuring instrument comprises transmitter, test terminal, the communication interface of data acquisition and analysis system and test terminal output.This electrical measuring instrument also comprises a gps system that is connected with data acquisition and analysis system by serial ports.
Fig. 2 shows the theory diagram of invention electrical measuring instrument transmitter.This transmitter is the base station equipment of a simplification, is composed in series by a TR plate, a MDM plate, a backboard and a SYNC plate.The signal of TR plate output is exported at antenna through a unidirectional power amplifier.
Described transmitter is in the long hair state by the control of the control module of described transmitter, received signal not, and the transmitting power of transmitter is set in advance by the MDM plate; The MDM plate produces the SCDMA baseband signal of constant power, the SYNC plate is used for frequency locking, make the carrier wave of a fixed frequency of TR plate generation of electrical measuring instrument, backboard be used for MDM plate and SYNC plate between communication, the SCDMA baseband signal that the MDM plate produces is delivered to after the TR plate, the TR plate carries out interpolation and filtering forming processes to this signal, and carries out carrier modulation, and the SCDMA radiofrequency signal is sent out with the fixed carrier frequency that the SYNC plate sets.Described transmitter is in the long hair state, received signal not, and long hair mechanism is controlled the receiving and dispatching mechanism of TR plate by the long hair control module.When the MDM plate received FPGA (programmable gate array) and provides the interrupt signal of 5ms for example by its DSP (digital signal processor), the long hair control module was closed reception and the emission switch of TR; When the MDM plate received FPGA and provides transmitting of 5ms for example by its DSP, the long hair control module was opened the emission switch of the TR plate of electrical measuring instrument, and the SCDMA radiofrequency signal of constant power is sent.
Fig. 3 shows the signal flow of electrical measuring instrument of the present invention test terminal.Behind the received RF signal of test terminal, carry out the intermediate frequency Modulation demodulation, carry out carrier wave after the sampling and recover, carry out despreading and differential decoding then, calculate signal to noise ratio (snr) and signal power, and with important informations such as the intensity of received signal and signal to noise ratios by delivering to data acquisition software with communication interface.
Fig. 4 is a data acquisition and analysis system software module block diagram.Described data acquisition and analysis system comprises a gps data acquisition module, test terminal data acquisition module, data preservation and display module, a configuration module and a control module.The gps data acquisition module reads the gps data that serial ports is sent, i.e. latitude and longitude information; The test terminal data acquisition module reads the base station down data that test terminal that serial ports sends receives, as received field strength and signal to noise ratio; By configuration module the testing mobile phone data that collect are correctly resolved; Data are preserved and display module combines coverage information and the geographical location information that the test terminal receives, and are presented on the map, and are kept in the database.Process control module is controlled data collection and data preservation, procedure for displaying.
Use the method for this SCDMA electrical measuring instrument, comprising:
At first, choose and reconnoitre suitable test station, fix up an aerial wire support and omnidirectional transmitter antenna connect SCDMA electrical measuring instrument transmitter, analog SCDMA base station emission SCDMA signal; Each frequency bandwidth 500KHz wherein, frequency range 1785.25-1805.25MHz, the 5ms emission, 5ms interrupts, and its power output is 40dBm.
Secondly,, need not to register, login to receive the signal that transmitter sends by the test terminal of SCDMA electrical measuring instrument, and with important indicators such as the descending field intensity of received signal and signal to noise ratios by giving PC with the PC interface.
Once more, open collection analysis software, gather the base station coverage information by the external interface of collection analysis software, promptly descending received field strength and signal to noise ratio are simultaneously by gps system gathering geographic position information.
Inferior again, by acquisition software received field strength and the geographical location information that the test terminal receives combined, be presented on the map; Can demonstrate the descending signal to noise ratio that the test terminal receives equally.By descending signal to noise ratio reflection speech quality situation.
At last, revise SCDMA radio propagation model by the transmitter different distance that collects, the test terminal incoming level at different terrain atural object place, to obtain meeting the base station covering radius of testing regional communication environments.Can be used in reference to the planning of wire guide network.
Use electrical measuring instrument of the present invention and method of testing, can estimate the covering radius of SCDMA base station in the various communication environments, thereby draw general result, improve the accuracy of propagation forecast at each typical environment according to test data and computer artificial result.Also can be used for instructing the SCDMA network planning.Use this electrical measuring instrument, save cost, install simple.And under the convenient situation without any resource in earlier stage, can launch by analog SCDMA base station, near real base station emission situation.
Claims (8)
1. the electrical measuring instrument of a SCDMA system comprises:
A transmitter;
A test terminal comprises the Receiver Module, intermediate frequency Modulation demodulation module, carrier recovery block, despreading module, differential decoding module and signal to noise ratio and the power computation module that are linked in sequence;
A communication interface; With
A data acquisition analysis system;
Wherein, described transmitter transmits, and described test terminal receives the signal of transmitter, is delivered to described data acquisition and analysis system through described communication interface then and analyzes, preserves and show;
It is characterized in that,
Described transmitter comprises by baseband board, and rf board is combined the loop that plate and backboard compose in series in proper order, the power amplifier module that is connected with this rf board, and control module frequently; Described transmitter is in the long hair state by control module control, received signal not, and the transmitting power of transmitter is set in advance by baseband board; Baseband board produces the SCDMA baseband signal of constant power; Frequently combine plate and be used for frequency locking, make the carrier wave of a fixed frequency of rf board generation of electrical measuring instrument; Backboard be used for baseband board and frequently combine plate between communication; The SCDMA baseband signal that baseband board produces is delivered to after the rf board, and rf board carries out interpolation and filtering forming processes to this signal, and carries out carrier modulation, and the SCDMA radiofrequency signal is sent out with the fixed carrier frequency that frequently comprehensive plate sets;
When described test terminal is to realize that the normal signal of terminal receives, do not transmit and do not carry out authentication and registration, described test terminal start back search transmitter, after determining transmitter, receive transmitter signal and rated output and signal to noise ratio, the intensity and the signal to noise ratio information of received signal are delivered to described data acquisition and analysis system by described communication interface.
2. electrical measuring instrument as claimed in claim 1 is characterized in that, this electrical measuring instrument also comprises a gps system, and this gps system can be immediately passed to geographical location information described data acquisition and analysis system.
3. electrical measuring instrument as claimed in claim 1 is characterized in that, described data acquisition and analysis system is a laptop computer.
4. electrical measuring instrument as claimed in claim 2, it is characterized in that described data acquisition and analysis system comprises: gps data acquisition module, test terminal data acquisition module, data preservation and display module, a configuration module and a control module; This gps data acquisition module is gathered the data of gps system, the data that this data collecting module collected test terminal, test terminal is transmitted, the data that this configuration module transmits the test terminal are resolved, data are preserved and display module combines coverage information and the geographical location information that the test terminal receives, be presented on the map, and be kept in the database, the control module of this data acquisition and analysis system is controlled data collection, preservation, procedure for displaying.
5. an application rights requires the method for testing of 1 described electrical measuring instrument, it is characterized in that, may further comprise the steps:
(1) use the transmitter of described electrical measuring instrument, analog SCDMA base station transmits, and wherein said transmitter is subjected to software control only to launch and do not receive, and transmitting power is by the baseband board control of transmitter;
(2) by the test terminal of described electrical measuring instrument, receive the signal that transmitter sends, and the power and the signal to noise ratio of received signal are passed to data acquisition and analysis system by communication interface, wherein said test terminal receives only and does not launch; This test terminal need not registration, login when receiving the signal that transmitter sends;
(3) data acquisition and analysis system is revised SCDMA radio propagation model by the incoming level that described test terminal collects different distance, to obtain the base station covering radius.
6. method of testing as claimed in claim 5 is characterized in that, described data acquisition and analysis system also receives by the next geographical location information of a gps system transmission; Received field strength and the geographical location information that the test terminal is received combines then, is presented on the map.
7. method of testing as claimed in claim 6 is characterized in that, described data acquisition and analysis system combines descending signal to noise ratio and the geographical location information that the test terminal receives, and is presented on the map reflection speech quality situation.
8. as the described method of testing of one of claim 5-7, it is characterized in that described data acquisition and analysis system comprises a gps data acquisition module, test terminal data acquisition module, data preservation and display module, a configuration module and a control module; This gps data acquisition module is gathered the data of gps system, the data that this data collecting module collected test terminal, test terminal is transmitted, the data that this configuration module transmits the test terminal are resolved, and this control module is controlled data collection, preservation, procedure for displaying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510082779A CN1897507B (en) | 2005-07-12 | 2005-07-12 | Electric tester and testing method for SCDMA system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510082779A CN1897507B (en) | 2005-07-12 | 2005-07-12 | Electric tester and testing method for SCDMA system |
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| Publication Number | Publication Date |
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| CN1897507A CN1897507A (en) | 2007-01-17 |
| CN1897507B true CN1897507B (en) | 2010-05-12 |
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| CN200510082779A Expired - Fee Related CN1897507B (en) | 2005-07-12 | 2005-07-12 | Electric tester and testing method for SCDMA system |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101128009B (en) * | 2007-09-18 | 2010-06-16 | 中兴通讯股份有限公司 | A method and device for interference test of WiMAX system |
| CN101159965B (en) * | 2007-11-23 | 2011-09-14 | 北京创毅视讯科技有限公司 | Mobile multimedia broadcasting signal monitoring method |
| CN102237934A (en) * | 2010-04-26 | 2011-11-09 | 中国移动通信集团公司 | Test method of terminal data transmission performance, system and apparatus thereof |
| CN103491565B (en) * | 2012-06-12 | 2016-09-21 | 芯讯通无线科技（上海）有限公司 | Communication terminal radio frequency test system and method for testing thereof |
| CN103260183B (en) * | 2013-04-19 | 2015-12-23 | 海能达通信股份有限公司 | Two-way electric measuring method and system |
| CN113093049B (en) * | 2021-03-19 | 2023-10-03 | 威胜集团有限公司 | Fault arc location diagnosis method, device and computer readable storage medium |
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| US5361402A (en) * | 1992-03-30 | 1994-11-01 | Motorola, Inc. | Test device for analyzing communication channels in a trunked radio system |
| CN1168473A (en) * | 1996-03-06 | 1997-12-24 | 利达电子株式会社 | System and method of measuring electric field strength |
| KR20010061244A (en) * | 1999-12-28 | 2001-07-07 | 박종섭 | Device for testing of rf front end transmitting part of bts system |
| US6329805B1 (en) * | 2000-02-29 | 2001-12-11 | Roger B. Bracht | Method for network analyzation and apparatus |
| WO2003052865A3 (en) * | 2001-12-18 | 2004-01-29 | Elazar Eyal-Bickels | Device and method for measurements of the osmolality of aqueous solutions, utilizing multi-frequency electromagnetic waves, in the radio-frequency range |
| CN1555143A (en) * | 2003-12-19 | 2004-12-15 | 中兴通讯股份有限公司 | Method for measuring radio communication system propagation delay |
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2005
- 2005-07-12 CN CN200510082779A patent/CN1897507B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5361402A (en) * | 1992-03-30 | 1994-11-01 | Motorola, Inc. | Test device for analyzing communication channels in a trunked radio system |
| CN1168473A (en) * | 1996-03-06 | 1997-12-24 | 利达电子株式会社 | System and method of measuring electric field strength |
| KR20010061244A (en) * | 1999-12-28 | 2001-07-07 | 박종섭 | Device for testing of rf front end transmitting part of bts system |
| US6329805B1 (en) * | 2000-02-29 | 2001-12-11 | Roger B. Bracht | Method for network analyzation and apparatus |
| WO2003052865A3 (en) * | 2001-12-18 | 2004-01-29 | Elazar Eyal-Bickels | Device and method for measurements of the osmolality of aqueous solutions, utilizing multi-frequency electromagnetic waves, in the radio-frequency range |
| CN1555143A (en) * | 2003-12-19 | 2004-12-15 | 中兴通讯股份有限公司 | Method for measuring radio communication system propagation delay |
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Assignee: BEIJING RUIPING COMMUNICATION TECHNOLOGY CO., LTD. Assignor: Xinwei Communications Technological Co., Ltd., Beijing Contract record no.: 2011110000104 Denomination of invention: Electric tester and testing method for SCDMA system Granted publication date: 20100512 License type: Exclusive License Open date: 20070117 Record date: 20110714 |
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