CN101141768A - Test method and device for simulating voice quality variation aroused by network characteristic - Google Patents
Test method and device for simulating voice quality variation aroused by network characteristic Download PDFInfo
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Abstract
The present invention discloses a testing method for simulating the network character to bring about the speech quality changing, and the testing method is used for testing the speech quality of the wireless communication system. The method comprises a speech quality testing before network simulation loaded step, which is used for testing the speech quality parameters under the wireless terminals in call condition based on the terminal to terminal perfect condition; a speech quality testing after network simulation loaded step, which is used for testing the speech quality parameters under the IP simulation is loaded and the IP network harms based on the perfect condition; a comparing and analysis step, which is used for comparing the changing model under the perfect condition and the changing model speech quality after the network simulation loaded, and providing the system with speech majorization reference. The present invention also discloses a testing device applying the testing method for simulating the network character to bring about the speech quality changing. The present invention provides majorization reference to the system speech coding decoding and the data package processing modules through monitoring that the speech quality is different with the changing of the network transmitting and grasping the changing rule of the speech quality and the network transmitting.
Description
Technical field
The present invention relates to the wireless telecommunications field tests, relate in particular to a kind of core net by the artificial antenna communication system, the method and the device of the voice quality variation under the situations such as time-delay, shake, packet loss appears in test when Network Transmission.
Background technology
Voice quality receives much concern as the most basic quality index of speech communication system always.The quality of voice quality index becomes and determines that can system successfully commercial prerequisite.In CDMA2000 (CodeDivision Multiple Access, code division multiple access) wireless telecommunication system, after agreement evolved to IOS5.0, traditional A interface evolved to packet domain by circuit domain, and the Absic mouth is also realized the IP carrying simultaneously.Follow with this variation and arrive be, the uncertainty of packet network transmission, and the complexity of networking in actual commercialization, caused voice quality problem is perplexing telecom operation unit always.How at system's implementation phase, by the different qualities of simulation packet network, the voice quality of monitoring under heterogeneous networks transmission characteristic situation changes, and grasps network operation rule, for the improvement of network technology provides reliable theoretical foundation, become an important topic of wireless communication networks development.
Summary of the invention
Technical problem to be solved by this invention is, provides a kind of analog network characteristic to cause method of testing and device that voice quality changes, to detect the difference that voice quality changes with Network Transmission, for communication system provides the optimization foundation.
For achieving the above object, analog network characteristic provided by the invention causes the method for testing that voice quality changes, and is used for the voice quality of wireless telecommunication system is tested, and comprising:
Voice quality testing procedure before the load networks simulation, being used for end-to-end perfect condition is benchmark, the voice quality parameters when detecting talking state between wireless terminal;
Load networks simulation back voice quality testing procedure, being used for described perfect condition is benchmark, the voice quality parameters after the IP network damage of detection loading IP simulation;
The comparative analysis step is used for the variation model that more described perfect condition and described load networks are simulated the back voice quality, and the foundation of voice-optimizing is provided for system.
Above-mentioned analog network characteristic causes the method for testing that voice quality changes, and described load networks simulation back voice quality testing procedure further comprises again:
Detect the step of voice quality under the load networks transmission data delay situation;
Detect the step that loads voice quality under the jitter conditions;
Detect the step of the voice quality under the load networks transmission data packet drop; And/or
The step of voice quality under propagation delay time, shake and three kinds of mixing situations of packet loss of detection loading data bag.
The method of testing that the voice quality that above-mentioned analog network characteristic causes changes, described load networks simulation back voice quality testing procedure also further comprises:
Detect the user and adopt under the tupe of speech coding transparent transmission function, the step of voice quality under the load networks transmission data delay situation at intra-office and interoffice;
Detect the user and adopt under the tupe of speech coding transparent transmission function, load the step of voice quality under the jitter conditions at intra-office and interoffice;
Detect the user and adopt under the tupe of speech coding transparent transmission function, the step of the voice quality under the load networks transmission data packet drop at intra-office and interoffice; And/or
Detect the user and adopt under the tupe of speech coding transparent transmission function the step of voice quality under the propagation delay time of loading data bag, shake and three kinds of mixing situations of packet loss at intra-office and interoffice.
The method of testing that the voice quality that above-mentioned analog network characteristic causes changes, described load networks simulation back voice quality testing procedure also further comprises:
Detect the user and adopt under the tupe of non-voice coding transparent transmission function, the step of voice quality under the load networks transmission data delay situation at intra-office and interoffice;
Detect the user and adopt under the tupe of non-voice coding transparent transmission function, load the step of voice quality under the jitter conditions at intra-office and interoffice;
Detect the user and adopt under the tupe of non-voice coding transparent transmission function the step of the voice quality under the load networks transmission data packet drop at intra-office and interoffice; And/or
Detect the user and adopt under the tupe of non-voice coding transparent transmission function the step of voice quality under the propagation delay time of loading data bag, shake and three kinds of mixing situations of packet loss at intra-office and interoffice.
The method of testing that the voice quality that above-mentioned analog network characteristic causes changes, described load networks simulation back voice quality testing procedure also further comprises:
Detect the user and adopt under the tupe of far-end speech coding transparent transmission function, the step of voice quality under the load networks transmission data delay situation at intra-office and interoffice;
Detect the user and adopt under the tupe of far-end speech coding transparent transmission function, load the step of voice quality under the jitter conditions at intra-office and interoffice;
Detect the user and adopt under the tupe of far-end speech coding transparent transmission function the step of the voice quality under the load networks transmission data packet drop at intra-office and interoffice; And/or
Detect the user and adopt under the tupe of far-end speech coding transparent transmission function the step of voice quality under the propagation delay time of loading data bag, shake and three kinds of mixing situations of packet loss at intra-office and interoffice.
The method of testing that the voice quality that above-mentioned analog network characteristic causes changes, described load networks simulation back voice quality testing procedure also further comprises:
Detect the user and adopt respectively under the different encoding/decoding mode situations, the step of voice quality under the load networks transmission data delay situation at intra-office and interoffice;
Detect the user and adopt respectively under the different encoding/decoding mode situations, load the step of voice quality under the jitter conditions at intra-office and interoffice;
Detect the user and adopt respectively under the different encoding/decoding mode situations, the step of the voice quality under the load networks transmission data packet drop at intra-office and interoffice; And/or
Detect the user and adopt under the different encoding/decoding mode situations step of voice quality under the propagation delay time of loading data bag, shake and three kinds of mixing situations of packet loss at intra-office and interoffice respectively.
The method of testing that the voice quality that above-mentioned analog network characteristic causes changes in the described comparison step, also comprises an arrangement voice quality test parameter and a curve plotting figure, and Network Transmission changes and the step of the correlation that voice quality changes to draw.
The method of testing that the voice quality that above-mentioned analog network characteristic causes changes, the load mode of described transmitted data on network time delay comprises:
Fixed delay, evenly distribute and Gaussian Profile; Wherein, described fixed delay is all to adopt fixing time delay for each packet; The time delay that described even distribution is a packet minimal time delay and maximum time scope probability equate; Described Gaussian Profile is that the time delay of packet becomes normal distribution in minimal time delay and maximum delay scope.
The method of testing that voice quality that above-mentioned analog network characteristic causes changes, the load mode of described transmitted data on network packet loss comprises: average packet loss, packet loss and burst packet loss at random; Wherein, described average packet loss is that each X bag is just lost an IP bag, and packet loss is 1/X; Described packet loss at random is to lose the IP bag at random, reaches the packet loss that is disposed, and the scope of packet loss is at random: 1～100%; Described burst packet loss be the burst scope from picked at random between minimum and the maximum, the packet loss of burst is X%.
Further, the present invention also provides a kind of testing apparatus of using the method for testing that voice quality that above-mentioned analog network characteristic causes changes, is used for the voice quality of wireless telecommunication system is tested, and comprising:
Network simulation module is connected between the media gateway of described wireless communication networks, is used to finish the simulation of described wireless communication networks transmission characteristic, and wherein transmission characteristic comprises time delay, shake and the packet loss that transmits data;
The voice quality detection module is used for described wireless communication networks is detected in the voice quality that has loaded the network analog front and back respectively;
The comparative analysis module is used for the variation model that the simulation of comparison load networks is preceding and load networks is simulated the back voice quality, and the foundation of voice-optimizing is provided for described wireless communication networks.
Compared with prior art, analog network characteristic of the present invention causes the method for testing of voice quality variation and the application of device, can be in the research and development of products stage, mode at the situation employing analog network that does not have conditions such as actual commercial network, monitor the difference that voice quality changes with Network Transmission, and grasp the Changing Pattern between the two, for modules such as system voice encoding and decoding, processing data packets provide the optimization foundation, accelerate system stability, for commercialization provides voice quality clear, high-quality.
Description of drawings
Fig. 1 causes the method for testing flow chart that voice quality changes for analog network characteristic of the present invention;
Fig. 2 causes the testing apparatus schematic block diagram that voice quality changes for analog network characteristic of the present invention;
Fig. 3 is desirable Gaussian Profile figure;
The test environment schematic block diagram that Fig. 4 builds for the application of method of testing of the present invention and device.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention being done more detailed explanation, with purpose, scheme and the effect of further understanding the present invention, but is not as the restriction to claims of the present invention.
Fig. 1 is that analog network characteristic of the present invention causes the method for testing flow chart that voice quality changes, with reference to figure 1, analog network characteristic of the present invention causes the method for testing that voice quality changes, adopt the method for contrast, be benchmark at first with end-to-end perfect condition (not carrying out the IP scrambling), the assurance system stablizes, the IP network damage that adds the IP simulation then, carry out the voice quality test, and then drawing IP network damage influence for voice quality, the adjusting of jitter-buffer size is optimized in simultaneously can coupled system realizing.This method may further comprise the steps:
Step S10, the test of voice quality before the load networks simulation: being used for end-to-end perfect condition is benchmark, the voice quality parameters when detecting talking state between wireless terminal;
Step S20, the test of load networks simulation back voice quality: being used for described perfect condition is benchmark, the voice quality parameters after the IP network damage of detection loading IP simulation;
Step S30, comparative analysis provides the foundation of voice-optimizing: be used for the variation model of the preceding and described load networks simulation of more described load networks simulation back voice quality, the foundation of voice-optimizing is provided for wireless telecommunication system.
In step S10, at first connect two wireless terminals, enter the state of communicating with each other; Detect not loading IP by a voice-quality module and to add voice quality under situation, the score standard adopts the mean opinion score of standard shown in table following table (speech intelligibility index definition table).
| Speech intelligibility index definition (MOS) | |
| Degree up to standard | Index definition |
| Good | 3.8 |
| Qualified | 3.5 |
| Can accept | 3.3 |
In step S20, the propagation delay time of loading data bag, shake, packet loss successively, and the Network Transmission under three kinds of mixing situations.Carrying out testing the voice quality under this kind situation respectively under each network analog load condition, the score standard is as noted above, adopts the mean opinion score of standard.
In the time delay of network simulation module load networks transmission data, and detect in the voice quality that has loaded under the time delay situation by the voice quality detection module; In the shake of network simulation module load networks transmission data, and detect by the voice quality detection module and to load the voice quality under the jitter conditions; Losing of network simulation module load networks transmission data, detect in the voice quality that has loaded under the transmits data packets loss situation by the voice quality detection module; And/or in the time delay of network simulation module load networks transmission data, shake, lose the mixing situation, detect in the voice quality that has loaded under the transmits data packets loss situation by the voice quality detection module.Wherein shake the Gaussian Profile loading mode in the load mode, can be with reference to shown in Figure 3.
After the voice quality parameters under each situation of record, just can put these data in order, curve plotting draws the correlation that Network Transmission changes and voice quality changes.
Can detect the user further and adopt TrFO (Transcoder FreeOperation respectively at intra-office and interoffice, speech coding transparent transmission function) and non-TrFO, and RTO (Remote TranscoderOperation, far-end speech coding transparent transmission function, be the special case of TrFO) etc. under the multiple tupe, voice quality variation model under different network analog load condition respectively is for modules such as system voice encoding and decoding, processing data packets provide the optimization foundation.
The user be can detect further and different encoding/decoding modes such as EVRC (Enhanced Variable Rate Codecs adopted respectively at intra-office and interoffice, the encoding and decoding of enhancing variable bit rate), under the situations such as 8K, 13K, voice quality variation model under different network analog load condition respectively is for modules such as system voice encoding and decoding, processing data packets provide the optimization foundation.
Packet time delay load mode in the above-mentioned network analog load condition comprises:
Fixed delay (Fixed): all adopt fixing time delay for each packet;
Evenly distribute (Uniform): the time delay of packet equates at the probability of minimal time delay and maximum delay scope;
Gaussian Profile (Gaussian): the time delay of packet is normal distribution in minimal time delay and maximum delay scope.
Data-bag lost load mode in the above-mentioned network analog load condition comprises:
Average packet loss (Periodic): just lose 1 IP bag every the X bag, packet loss is 1/X;
Packet loss (Random) at random: lose the IP bag at random, reach the packet loss that is disposed, at random the scope of packet loss: 1%～100%;
Burst packet loss (Burst): the scope of burst is from picked at random between MIN and the MAX, and the packet loss of burst is X%.
Above-mentioned steps S30, by comparing after not having load networks simulation and load networks simulation, the variation model of packet voice quality under difference transmission situation is for modules such as system voice encoding and decoding, the processing of data package jitter buffering area provide the optimization foundation.
Fig. 2 is a kind of schematic block diagram that above-mentioned analog network characteristic causes the device 20 of the method for testing that voice quality changes of using provided by the invention, with reference to figure 2, this analog network characteristic causes that the testing apparatus 20 that voice quality changes adopts above-mentioned method of testing that the voice quality of wireless communication networks is tested, this device 20 comprises: network simulation module 201, be connected between the media gateway of described wireless communication networks, be used to finish the simulation of described wireless communication networks transmission characteristic, wherein transmission characteristic comprises time delay, shake and the packet loss that transmits data; Voice quality detection module 202 is used for described wireless communication networks is detected in the voice quality that has loaded the network analog front and back respectively; Comparative analysis module 203 is used for the variation model that the simulation of comparison load networks is preceding and load networks is simulated the back voice quality, and the foundation of voice-optimizing is provided for described wireless communication networks.
The test environment schematic block diagram that Fig. 4 builds for the application of method of testing of the present invention and device.With reference to figure 4, this test environment comprises MSCe (Mobile switching center emulation, move exchange emulation) 401, MGW (Media Gate Way, media gateway) 402, BSC (Base Transceiver System, base station controller) 403, BTS (Base Transceiver System, base station transceiver system) 404, wireless terminal 405, network simulation module 201, voice quality detection module 202 and connection cable etc.Wherein: network elements such as MSCe401 and MGW402, BSC403 cooperate, and to being positioned at the functional entity that its coverage travelling carriage is controlled, exchanged, finish the foundation and the state-maintenance of call signaling information; The cooperation of network element such as MGW402 and MSCe401, BSC403 provides the Media Stream communication for per call; BSC403 controls base station transceiver system BTS404 and safeguards, and and BTS404 together, for the terminal use provides wireless access; Wireless terminal 405 is common mobile phone or unlimited fixed station.More than these network elements all be the part of cdma wireless communication system, for the described measurand part of this programme, these network elements are not made any change in the described test of this programme.
Application of the present invention can be in the research and development of products stage, mode at the situation employing analog network that does not have conditions such as actual commercial network, the difference that the monitoring voice quality changes with Network Transmission, grasp the Changing Pattern between the two, for modules such as communication system encoding and decoding speech, processing data packets provide the optimization foundation, accelerate system stability, for commercialization provides voice quality clear, high-quality.
The present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (10)
1. an analog network characteristic causes the method for testing that voice quality changes, and is used for the voice quality of wireless telecommunication system is tested, and it is characterized in that, comprising:
Voice quality testing procedure before the load networks simulation, being used for end-to-end perfect condition is benchmark, the voice quality parameters when detecting talking state between wireless terminal;
Load networks simulation back voice quality testing procedure, being used for described perfect condition is benchmark, the voice quality parameters after the IP network damage of detection loading IP simulation;
The comparative analysis step is used for the variation model that more described perfect condition and described load networks are simulated the back voice quality, and the foundation of voice-optimizing is provided for system.
2. analog network characteristic according to claim 1 causes the method for testing that voice quality changes, and it is characterized in that, described load networks simulation back voice quality testing procedure further comprises again:
Detect the step of voice quality under the load networks transmission data delay situation;
Detect the step that loads voice quality under the jitter conditions;
Detect the step of the voice quality under the load networks transmission data packet drop; And/or
The step of voice quality under propagation delay time, shake and three kinds of mixing situations of packet loss of detection loading data bag.
3. the method for testing that the voice quality that analog network characteristic according to claim 1 causes changes is characterized in that, described load networks simulation back voice quality testing procedure also further comprises:
Detect the user and adopt under the tupe of speech coding transparent transmission function, the step of voice quality under the load networks transmission data delay situation at intra-office and interoffice;
Detect the user and adopt under the tupe of speech coding transparent transmission function, load the step of voice quality under the jitter conditions at intra-office and interoffice;
Detect the user and adopt under the tupe of speech coding transparent transmission function, the step of the voice quality under the load networks transmission data packet drop at intra-office and interoffice; And/or
Detect the user and adopt under the tupe of speech coding transparent transmission function the step of voice quality under the propagation delay time of loading data bag, shake and three kinds of mixing situations of packet loss at intra-office and interoffice.
4. the method for testing that the voice quality that analog network characteristic according to claim 1 causes changes is characterized in that, described load networks simulation back voice quality testing procedure also further comprises:
Detect the user and adopt under the tupe of non-voice coding transparent transmission function, the step of voice quality under the load networks transmission data delay situation at intra-office and interoffice;
Detect the user and adopt under the tupe of non-voice coding transparent transmission function, load the step of voice quality under the jitter conditions at intra-office and interoffice;
Detect the user and adopt under the tupe of non-voice coding transparent transmission function the step of the voice quality under the load networks transmission data packet drop at intra-office and interoffice; And/or
Detect the user and adopt under the tupe of non-voice coding transparent transmission function the step of voice quality under the propagation delay time of loading data bag, shake and three kinds of mixing situations of packet loss at intra-office and interoffice.
5. the method for testing that the voice quality that analog network characteristic according to claim 1 causes changes is characterized in that, described load networks simulation back voice quality testing procedure also further comprises:
Detect the user and adopt under the tupe of far-end speech coding transparent transmission function, the step of voice quality under the load networks transmission data delay situation at intra-office and interoffice;
Detect the user and adopt under the tupe of far-end speech coding transparent transmission function, load the step of voice quality under the jitter conditions at intra-office and interoffice;
Detect the user and adopt under the tupe of far-end speech coding transparent transmission function the step of the voice quality under the load networks transmission data packet drop at intra-office and interoffice; And/or
Detect the user and adopt under the tupe of far-end speech coding transparent transmission function the step of voice quality under the propagation delay time of loading data bag, shake and three kinds of mixing situations of packet loss at intra-office and interoffice.
6. the method for testing that the voice quality that analog network characteristic according to claim 1 causes changes is characterized in that, described load networks simulation back voice quality testing procedure also further comprises:
Detect the user and adopt respectively under the different encoding/decoding mode situations, the step of voice quality under the load networks transmission data delay situation at intra-office and interoffice;
Detect the user and adopt respectively under the different encoding/decoding mode situations, load the step of voice quality under the jitter conditions at intra-office and interoffice;
Detect the user and adopt respectively under the different encoding/decoding mode situations, the step of the voice quality under the load networks transmission data packet drop at intra-office and interoffice; And/or
Detect the user and adopt under the different encoding/decoding mode situations step of voice quality under the propagation delay time of loading data bag, shake and three kinds of mixing situations of packet loss at intra-office and interoffice respectively.
7. the method for testing that the voice quality that analog network characteristic according to claim 1 causes changes, it is characterized in that, in the described comparison step, also comprise an arrangement voice quality test parameter and a curve plotting figure, Network Transmission changes and the step of the correlation that voice quality changes to draw.
8. the method for testing that the voice quality that analog network characteristic according to claim 2 causes changes is characterized in that the load mode of described transmitted data on network time delay comprises:
Fixed delay, evenly distribute and Gaussian Profile; Wherein, described fixed delay is all to adopt fixing time delay for each packet; The time delay that described even distribution is a packet minimal time delay and maximum time scope probability equate; Described Gaussian Profile is that the time delay of packet becomes normal distribution in minimal time delay and maximum delay scope.
9. the method for testing that voice quality that analog network characteristic according to claim 2 causes changes is characterized in that the load mode of described transmitted data on network packet loss comprises: average packet loss, packet loss and burst packet loss at random; Wherein, described average packet loss is that each X bag is just lost an IP bag, and packet loss is 1/X; Described packet loss at random is to lose the IP bag at random, reaches the packet loss that is disposed, and the scope of packet loss is at random: 1～100%; Described burst packet loss be the burst scope from picked at random between minimum and the maximum, the packet loss of burst is X%.
10. an application rights requires the testing apparatus of the method for testing that each described analog network characteristic causes in 1～9 voice quality changes, and is used for the voice quality of wireless telecommunication system is tested, and it is characterized in that, comprising:
Network simulation module is connected between the media gateway of described wireless communication networks, is used to finish the simulation of described wireless communication networks transmission characteristic, and wherein transmission characteristic comprises time delay, shake and the packet loss that transmits data;
The voice quality detection module is used for described wireless communication networks is detected in the voice quality that has loaded the network analog front and back respectively;
The comparative analysis module is used for the variation model that the simulation of comparison load networks is preceding and load networks is simulated the back voice quality, and the foundation of voice-optimizing is provided for described wireless communication networks.
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| WO2012048590A1 (en) * | 2010-10-12 | 2012-04-19 | 中兴通讯股份有限公司 | Device, system and method for evaluating speech quality in radio communications |
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| CN103839554A (en) * | 2012-11-26 | 2014-06-04 | 华为技术有限公司 | Speech quality assessment method and device |
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| CN1625086A (en) * | 2003-12-03 | 2005-06-08 | 华为技术有限公司 | Method and system for detecting voice quality |
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| WO2012048590A1 (en) * | 2010-10-12 | 2012-04-19 | 中兴通讯股份有限公司 | Device, system and method for evaluating speech quality in radio communications |
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| WO2014067283A1 (en) * | 2012-11-01 | 2014-05-08 | 华为技术有限公司 | Network failure detecting method, node, and monitoring center |
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| CN105512343A (en) * | 2016-01-06 | 2016-04-20 | 北京京东尚科信息技术有限公司 | Method and device for simulating network anomaly and testing automatic switching of database faults |
| CN106034306A (en) * | 2016-01-18 | 2016-10-19 | 张天宇 | Mobile communication network wireless network voice optimizing method |
| CN107493587A (en) * | 2016-06-13 | 2017-12-19 | 中兴通讯股份有限公司 | A kind of WMG method of testing, apparatus and system |
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| CN108769441A (en) * | 2018-06-20 | 2018-11-06 | 中国联合网络通信集团有限公司 | Soft switch call method and system |
| CN108769441B (en) * | 2018-06-20 | 2021-04-02 | 中国联合网络通信集团有限公司 | Soft switch conversation method and system |
| CN109785860A (en) * | 2019-01-08 | 2019-05-21 | 北京中创信测科技股份有限公司 | A kind of method that four domain six-dimension intelligent of 2G3G4G voice quality failure is delimited |
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| CN101141768B (en) | 2010-06-16 |
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