CN101072075A - Device and method for testing radio frequency interference between wireless communication systems - Google Patents
Device and method for testing radio frequency interference between wireless communication systems Download PDFInfo
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- CN101072075A CN101072075A CNA2007101267202A CN200710126720A CN101072075A CN 101072075 A CN101072075 A CN 101072075A CN A2007101267202 A CNA2007101267202 A CN A2007101267202A CN 200710126720 A CN200710126720 A CN 200710126720A CN 101072075 A CN101072075 A CN 101072075A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/345—Interference values
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Abstract
The invention discloses method for testing radio frequency interference between wireless communication systems. The invention includes steps: (1) using cable to connect radio frequency (RF) module at RF receiving end and RF module at RF transmitting end, moreover RF module at disturbing transmitting end through attenuator is connected to RF module at the receiving end of disturbed system; (2) transmitting RF to obtain a set of transmitted spectrum and received spectrum; (3) analyzing the received spectrum so as to obtain condition of RF disturbance. Error rate analyzed by third step is determined by area ratio between transmitted spectrum and received spectrum obtained under a noise. The invention also discloses device for executing the method. The invention tests RF disturbance between wireless communication systems correctly.
Description
Technical field
The present invention relates to the disturbed test apparatus and method in the communication system, relate in particular to the apparatus and method of radio frequency interference between a kind of testing wireless communication system.
Background technology
Development of Communication Technique causes the network of various standards and is stored in the middle of the market, for example, and in present 2G network and depositing CDMA and two kinds of communication networks of GSM.And at present the 3-G (Generation Three mobile communication system) of positive develop rapidly was compared with former communication system and is had bigger bandwidth and the transmission rate of Geng Gao, thereby vast potential for future development is arranged.Yet because the networking cost is higher, the network arrangement progress is slow, and therefore 3G network can not individualism in the regular period from now on, its must experience one section with the very ripe network coexisted time of 2G of present stage.
Diverse network and the present situation of depositing have caused market that communicating terminal is had higher requirement, and require terminal freely to switch between multiple network, are included in switching under a kind of pattern and the switching under the different mode.Yet at present, this terminal that has comprised a plurality of systems exists the interference problem of a system to other system when work.Guarantee that each system can both operate as normal, to the interference of other system, so just can take appropriate measures and avoid the generation of this interference in the time of must testing out a system works.
Mutual interference has a variety of between system, between the test wireless system during radio frequency interference, because the radio frequency interference form between the system is varied, consider that one by one various interference is difficult to operation in practice, because mutual relation is all arranged between the various interference, a kind of power of interference can have influence on another kind of the interference.In addition, owing to, therefore be difficult to measure the signal attenuation value because the difference of the putting position of antenna and antenna drift angle all can have influence on the coupling coefficient of antenna, thus be difficult for judging the radio frequency interference degree between the judgement system.
Summary of the invention
The objective of the invention is to be difficult to the test antenna coupling coefficient and to cause the problem that is difficult to judge annoyance level between the wireless communication system, propose the apparatus and method of radio frequency interference between a kind of energy Validity Test wireless communication system newly at prior art.
For achieving the above object, the invention provides the method for radio frequency interference between a kind of testing wireless communication system, this method comprises the steps:
The first step connects the radio-frequency module of each internal system radio frequency receiving terminal and the radio-frequency module of radio-frequency transmissions end with wired path, and links to each other by attenuator between the radio-frequency module of the radio-frequency module of EVAC (Evacuation Network Computer Model) transmitting terminal and disturbed system receiving terminal;
In second step, the emission radio frequency is measured the one group of emission spectrum and the received spectrum of disturbed system;
The 3rd step, analyze described received spectrum, draw the radio frequency interference situation.
Above-mentioned method if the coupling coefficient between EVAC (Evacuation Network Computer Model) and the disturbed system antenna is measured, then is provided with pad value according to described coupling coefficient to attenuator in the first step; If the coupling coefficient between the antenna is uncertain, then in the first step, tests out the span of coupling coefficient between the antenna, and pad value is set respectively according to two end values of test coupling coefficient scope;
In the above-mentioned method, if the coupling coefficient between EVAC (Evacuation Network Computer Model) and the disturbed system antenna is measured, then in second step, measured frequency spectrum comprises that disturbed system launches measured frequency spectrum of radio frequency and EVAC (Evacuation Network Computer Model) and disturbed system separately and all launches the measured frequency spectrum of radio frequency;
If the coupling coefficient between the above-mentioned antenna is uncertain, then in second step, measured frequency spectrum is that EVAC (Evacuation Network Computer Model) and disturbed system all launch the measured frequency spectrum of radio frequency.
Above-mentioned method, in the 3rd step, the error rate under a certain noise situations that analyze is recently determined by the area of emission spectrum that obtains under this noise and received spectrum.
Above-mentioned method, described pad value equal the value and the dual-mode antenna efficient sum of described coupled systemes numerical value or coupling coefficient scope one end.
The present invention also provides a kind of device of testing radio frequency interference between a plurality of wireless communication systems, this device comprises EVAC (Evacuation Network Computer Model) and disturbed system at least, be connected with wired path between the radio-frequency module of each internal system transmitting terminal and the radio-frequency module of receiving terminal, between the radio-frequency module of the radio-frequency module of EVAC (Evacuation Network Computer Model) transmitting terminal and disturbed system receiving terminal, be connected with attenuator.
Method and apparatus provided by the invention can be tested the radio frequency interference between each wireless communication system accurately, and the device that has a plurality of wireless systems for wireless manufacturers produce provides foundation.
Description of drawings
Fig. 1 is the schematic diagram of radio frequency interference between wireless communication system in the prior art; And
Fig. 2 is the device schematic diagram of radio frequency interference between testing wireless communication of the present invention system.
Embodiment
Below in conjunction with accompanying drawing, with the dual system be example the present invention will be described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, and be not used in qualification the present invention.The present invention is equally applicable to multisystem.
Referring to Fig. 1, band system A of antenna and the coupling coefficient between the B are because therefore the difference of the putting position of antenna and antenna drift angle and can't accurately testing be difficult to the radio frequency interference between test macro.For the coupling coefficient between the test antenna, must make two systems place the darkroom, and constantly debug azimuth and distance between the antenna, and the antenna coupling coefficient is all different in the value of every bit, therefore is very difficult to test.But for certain system, the coupled systemes numerical value between certain any antenna can be surveyed, and is made as a; Perhaps limiting under the situation of test condition, the coupling coefficient of system antenna can determine certain scope (b, c) in.
Referring to Fig. 2, with the radio-frequency module A of cable A connected system A transmitting terminal and the radio-frequency module A ' of receiving terminal, with the radio-frequency module B of cable B connected system B transmitting terminal and the radio-frequency module B ' of receiving terminal.Add an attenuator between radio-frequency module A and radio-frequency module B ', this attenuator is used for coupling between the artificial antenna and the power that loses on antenna.
If but the coupling coefficient between the antenna is measured value a, then can directly attenuator be established a pad value a ' (a ' value be a (unit is dB) and dual-mode antenna efficient (dB) sum), radio frequency directly enters the receiving terminal of the B of system behind transmitting power decay certain value like this, has avoided adding the debugging behind the antenna.Whether add test by control system A, emission spectrum F1 and received spectrum F1 ' in the time of can obtaining adding the emission spectrum F2 of the system B after the A of the system influence and received spectrum F2 ' and the B of system and work independently.The frequency spectrum that the frequency spectrum that F2 and F2 ' record when all launching radio frequency for the A of system and the B of system, F1 and F1 ' record when launching radio frequency separately for the B of system.
If the coupling coefficient between the antenna certain scope (b, c) in.Earlier pad value is made as b ' (b ' value be b (dB) and dual-mode antenna efficient (dB) sum), system A and the B of system emission radio frequency draw emission spectrum F1 and the received spectrum F1 ' of the B of system; Pad value is made as c ' (c ' value be c (dB) and dual-mode antenna efficient (dB) sum), system A and the B of system emission radio frequency are measured the B of system emission spectrum F2 and received spectrum F2 ' again.F1 ' and F2 ' are the received spectrum under the two extreme situations.
Owing in test process, change noise level, so described frequency spectrum is one group of frequency spectrum under different noise levels.By analyzing the value of above-mentioned frequency spectrum, can analyze the kind and the corresponding radio frequency parameter of radio frequency interference.Concerning receiver, the kind of radio frequency interference generally speaking can be divided in the frequency acceptance band disturbs (band is outer to be disturbed) and the outer interference (barrage jamming) of frequency acceptance band., then disturbing for band is outer in receiving frequency range as the difference of F1 ' and F2 ', outside frequency acceptance band, then is barrage jamming as the difference of F1 ' and F2 '.Corresponding radio frequency parameter mainly contains signal to noise ratio, the error rate, receiving sensitivity.By the signal to noise ratio receiving sensitivity of can deriving.After system determined, signal to noise ratio was determined that by noise noise is the known conditions in the test.The emission spectrum and the received spectrum that can be drawn under the corresponding noise by it in the error rate under arbitrary signal to noise ratio draws (area that for example can be by emission spectrum and received spectrum is than calculating the error rate), thereby draws the curve chart of signal to noise ratio and bit error rate relation.
Claims (6)
1, the method for radio frequency interference between a kind of testing wireless communication system is characterized in that this method comprises the steps:
The first step connects the radio-frequency module of each internal system radio frequency receiving terminal and the radio-frequency module of radio-frequency transmissions end with wired path, and links to each other by attenuator between the radio-frequency module of the radio-frequency module of EVAC (Evacuation Network Computer Model) transmitting terminal and disturbed system receiving terminal;
In second step, the emission radio frequency obtains the one group of emission spectrum and the received spectrum of disturbed system;
The 3rd step, analyze described received spectrum, draw the radio frequency interference situation.
2, the method for claim 1 is characterized in that, if the coupling coefficient between EVAC (Evacuation Network Computer Model) and the disturbed system antenna is measured, then according to described coupling coefficient attenuator is provided with pad value in the first step;
If the coupling coefficient between the above-mentioned antenna is uncertain, then in the first step, tests out the span of coupling coefficient between the antenna, and pad value is set respectively according to two end values of test coupling coefficient scope.
3, method as claimed in claim 2, it is characterized in that, if the coupling coefficient between EVAC (Evacuation Network Computer Model) and the disturbed system antenna is measured, then in second step, measured frequency spectrum comprises that disturbed system launches measured frequency spectrum of radio frequency and EVAC (Evacuation Network Computer Model) and disturbed system separately and all launches the measured frequency spectrum of radio frequency;
If the coupling coefficient between the above-mentioned antenna is uncertain, then in second step, measured frequency spectrum is that EVAC (Evacuation Network Computer Model) and disturbed system all launch the measured frequency spectrum of radio frequency.
As claim 1 or 2 or 3 described methods, it is characterized in that 4, in the 3rd step, the error rate under a certain noise situations that analyze is recently determined by the area of emission spectrum that obtains under this noise and received spectrum.
5, method as claimed in claim 4 is characterized in that, described pad value equals the value and the dual-mode antenna efficient sum of described coupled systemes numerical value or coupling coefficient scope one end.
6, a kind of device of testing radio frequency interference between a plurality of wireless communication systems, this device comprises EVAC (Evacuation Network Computer Model) and disturbed system at least, it is characterized in that, be connected with wired path between the radio-frequency module of each internal system transmitting terminal and the radio-frequency module of receiving terminal, between the radio-frequency module of the radio-frequency module of EVAC (Evacuation Network Computer Model) transmitting terminal and disturbed system receiving terminal, be connected with attenuator.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101267202A CN101072075A (en) | 2007-06-15 | 2007-06-15 | Device and method for testing radio frequency interference between wireless communication systems |
| PCT/CN2007/003623 WO2008151488A1 (en) | 2007-06-15 | 2007-12-17 | A device and a method for testing the rf interference between wireless communication systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101267202A CN101072075A (en) | 2007-06-15 | 2007-06-15 | Device and method for testing radio frequency interference between wireless communication systems |
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| CN101072075A true CN101072075A (en) | 2007-11-14 |
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| CNA2007101267202A Pending CN101072075A (en) | 2007-06-15 | 2007-06-15 | Device and method for testing radio frequency interference between wireless communication systems |
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| WO (1) | WO2008151488A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102158242A (en) * | 2011-05-25 | 2011-08-17 | 哈尔滨工业大学 | System and method for testing antijamming capability of wireless communication products operating at ISM (Industry, Science and Medical) frequency range |
| CN101425857B (en) * | 2008-11-20 | 2011-10-26 | 北京航空航天大学 | Diagnosis method for non-linear interference outside communication band of transmission device |
| CN104754633A (en) * | 2013-12-30 | 2015-07-01 | 中国移动通信集团公司 | Mutual interference testing method and device |
| CN105425060A (en) * | 2015-11-04 | 2016-03-23 | 上海与德通讯技术有限公司 | Interference detection method and system of antenna coupling |
| CN105813124A (en) * | 2014-12-31 | 2016-07-27 | 展讯通信（上海）有限公司 | Performance test method and system of WIFI and/or LTE terminal device |
| CN109257757A (en) * | 2018-08-23 | 2019-01-22 | 全球能源互联网研究院有限公司 | A kind of interference analysis system towards electric power wireless private network |
| CN110233685A (en) * | 2019-05-16 | 2019-09-13 | 德凯认证服务（苏州）有限公司 | A kind of wireless signal mutual interference test method and its test macro |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9448279B2 (en) * | 2011-09-02 | 2016-09-20 | Apple Inc. | Test systems for electronic devices with wireless communications capabilities |
| CN114584193B (en) * | 2021-12-31 | 2024-09-24 | 南京熊猫汉达科技有限公司 | Method for realizing high dynamic receiving control in directional communication system |
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| US6766164B1 (en) * | 1999-01-19 | 2004-07-20 | Lucent Technologies Inc. | System and method for providing radio frequency conditions for testing wireless communications equipment |
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| CN2686219Y (en) * | 2003-07-15 | 2005-03-16 | 智邦科技股份有限公司 | Multipath emulation system |
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2007
- 2007-06-15 CN CNA2007101267202A patent/CN101072075A/en active Pending
- 2007-12-17 WO PCT/CN2007/003623 patent/WO2008151488A1/en active Application Filing
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| US5062148A (en) * | 1989-06-02 | 1991-10-29 | Hewlett-Packard Company | Multi-path fading simulator |
| US5059892A (en) * | 1990-10-15 | 1991-10-22 | Hewlett-Packard Company | Radio frequency signal interface |
| US6766164B1 (en) * | 1999-01-19 | 2004-07-20 | Lucent Technologies Inc. | System and method for providing radio frequency conditions for testing wireless communications equipment |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101425857B (en) * | 2008-11-20 | 2011-10-26 | 北京航空航天大学 | Diagnosis method for non-linear interference outside communication band of transmission device |
| CN102158242B (en) * | 2011-05-25 | 2013-07-24 | 哈尔滨工业大学 | System and method for testing antijamming capability of wireless communication products operating at ISM (Industry, Science and Medical) frequency range |
| CN102158242A (en) * | 2011-05-25 | 2011-08-17 | 哈尔滨工业大学 | System and method for testing antijamming capability of wireless communication products operating at ISM (Industry, Science and Medical) frequency range |
| CN104754633B (en) * | 2013-12-30 | 2018-11-02 | 中国移动通信集团公司 | A kind of mutual disturbed test method and device |
| CN104754633A (en) * | 2013-12-30 | 2015-07-01 | 中国移动通信集团公司 | Mutual interference testing method and device |
| CN105813124B (en) * | 2014-12-31 | 2019-06-25 | 展讯通信（上海）有限公司 | The performance test methods and system of WIFI and/or LTE terminal equipment |
| CN105813124A (en) * | 2014-12-31 | 2016-07-27 | 展讯通信（上海）有限公司 | Performance test method and system of WIFI and/or LTE terminal device |
| CN105425060B (en) * | 2015-11-04 | 2018-09-04 | 上海与德通讯技术有限公司 | A kind of interference detection method and detecting system of antenna coupling |
| CN105425060A (en) * | 2015-11-04 | 2016-03-23 | 上海与德通讯技术有限公司 | Interference detection method and system of antenna coupling |
| CN109257757A (en) * | 2018-08-23 | 2019-01-22 | 全球能源互联网研究院有限公司 | A kind of interference analysis system towards electric power wireless private network |
| CN109257757B (en) * | 2018-08-23 | 2021-11-09 | 全球能源互联网研究院有限公司 | Interference analysis system for electric power wireless private network |
| CN110233685A (en) * | 2019-05-16 | 2019-09-13 | 德凯认证服务（苏州）有限公司 | A kind of wireless signal mutual interference test method and its test macro |
| CN110233685B (en) * | 2019-05-16 | 2021-10-08 | 德凯认证服务（苏州）有限公司 | Wireless signal coexistence interference test method and test system thereof |
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| WO2008151488A1 (en) | 2008-12-18 |
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Application publication date: 20071114 |