CN101521898A - Speech quality evaluation system of mobile communication network - Google Patents
Speech quality evaluation system of mobile communication network Download PDFInfo
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Abstract
The invention relates to a speech quality evaluation system of mobile communication network. The evaluation system mainly comprises a tested speech network and a data transmission network, and is characterized by consisting of dialing test terminals, a dialing test control server, a central dialing test terminal, a database server, an analysis management server, a Web server and a GIS server, wherein each server exchanges data through a relevant interface table in the database server. The evaluation system analyzes audio signals sent among the dialing test terminals through embedded program so as to identify the problems such as single pass, intermittence, silence, strange noise, and the like; moreover, when required by the central dialing test terminal, receiving audio frequency is transmitted back to obtain objective evaluation index PESQ value of speech quality during communication through professional software; the dialing test terminals obtain communication link parameters at the same time and report the parameters along with analysis conclusion; and the central dialing test terminal carries out relevant analysis estimation of speech quality grade and network parameters through comparison.
Description
Technical field
The present invention relates to mobile communication technology, specifically mobile communication network speech quality evaluation technology.
Background technology
Before the 3G business did not form profit model as yet, traditional voice transmission still was the main means of communication.Getting well with poor of mobile communication voice conversation quality is the key factor that influences user satisfaction, is the important indicator of weighing the communication voice service.Development along with urban construction, skyscraper new in the city continues to bring out, user density constantly increases, cause the mobile network new signal blind zone, isolated island and congestion point constantly to occur, for this reason, mobile operator must constantly adjust network equipment layout to adapt to such variation; And new adjustment might bring new problems such as neighbor cell interference.
Present mobile communication network, no matter be switching part or wireless portion, be used for assessing the main means dependence statistical report form of network performance, promptly adopt mobile test equipment such as laptop computer, professional test mobile phone to obtain statistics, though this mode can in time reflect performances such as the call completing rate, cutting off rate of system, but the actual voice quality that can not reflect the cellphone subscriber: when the cellphone subscriber in communication process, take place single-pass, interrupted, when problem such as mourning in silence, on statistics reflection but remains a normal call setup and normal the calling discharges.And for the cellphone subscriber, to the speech phenomenon of these infecctive calls, can only dial again once, this obviously is the thing that the cellphone subscriber is very helpless and dislike.At the speech quality problem of the actual impression of cellphone subscriber, the countermeasure that present communication operator takes is a kind of passive attitude---and after the wait customer complaint, start the network optimization test just now, build then.
Summary of the invention
The objective of the invention is to overcome existing too specialized, the many drawbacks such as running scheduling difficulty is big, investment is big, maintenance inconvenience of traditional mobile communication test macro, be intended to design a cover synthesization, intellectuality, networking and speech quality evaluation system of mobile communication network easy to use.
The present invention's speech quality evaluation system of mobile communication network (i.e. " VQIT system "), mainly contain: tested speech network, data transmission network (i.e. " GPRS "), testing terminal (i.e. " TS "), testing Control Server, center testing terminal (i.e. " CTS "), database server, analysis management server (voice analysis software, testing planning software), Web server (association analysis and output), GIS server (special layer, the directly perceived demonstration).Relevant interface table interaction data in each server through database server.
This system be by the mobile network testing terminal, center testing terminal and analysis management server contact, thereby form a complete test macro, mobile network's quality of speech signal and network quality are tested.By GPRS or CDMA, test data is passed in real time the analysis management server of system together with the geographical position of test terminal.The data that the analysis management server can be gathered a plurality of testing equipment automatically merge, thereby the data of each interface are carried out correlation analysis.All these can realize time synchronized accurately.Native system is controlled by the analysis management server, the GSM/CDMA wireless network is carried out omnibearing real-time testing and analysis, realization to the test of the voice quality of mobile communication, monitoring, analyze and estimate, constituted a test macro with very strong retractility (can according to the function of the self-defined system of user's request).This test macro has provided: 1. network coverage assessment, 2. speech quality evaluation, 3. network interferences assessment, the 4. assessment of network topology, the 5. assessment of resource utilization, the 6. contrast of traffic statistics and test index (assessment of speech business assessment data business).Thereby set up the network monitoring system that a cover can the analog subscriber sense of reality, routine test, in time pinpointed the problems, and provide sufficient decision-making data for dealing with problems fast.Native system is accurate, efficient, the mobile mobile communication network speech quality evaluation testing equipment of a kind of " point-and-shoot ".
Innovative point of the present invention is:
One. theory innovation
On system constitutes unlike the prior art.The present invention casts aside complicated and expensive mobile test equipment such as laptop computer, professional test mobile phone, and adopts advanced mobile communication, embedded system and global location technology such as (GPS), is a kind of intelligence, easy, automatic flowing test equipment.
This system can finish the integrated network performance test to various places automatically, and after combining the geographical location information that GPS receives, directly test data is sent to center testing terminal by SMS or GPRS, testing terminal in center provides expert opinion by the analyzing and processing to the various places data.
Two. application innovation
Test job need not the professional and participates in also can finishing, even the flowing test terminal directly can be installed on the mobile strong vehicle such as taxi, realizes long-term, real-time test of mobile network and monitoring; Test zone also can expand various places to, makes relevant departments to the grasp of network condition more comprehensively.
The analysis expert system gathers the initial data of all tests, draws the ruuning situation of system by expert system analysis, and the deterioration situation proposes improved method and measure.
Three. technological innovation
The FAQs of speech quality has: the definition of the voice that do not get through, do not hear, go offline, feel when monolateral conversation, cross-talk, echo and conversation, identification etc.
VQIT adopts particular audio signal that the speaking test result is analyzed, and can effectively differentiate that the most common failure resolution reaches more than 95% to common voice quality problem.
Terminal adopts embedded architecture, has performance height, characteristics that price is low, is suitable for carrying out large-scale network monitoring.
The invention has the advantages that:
Below in conjunction with the drawings and specific embodiments, narrate embodiments of the invention:
Description of drawings
Fig. 1. the system global structure schematic diagram
The block diagram of Fig. 2 .TS
Fig. 3. sequential chart
Embodiment
As shown in Figure 1, the speech quality evaluation system of mobile communication network of present embodiment mainly contains: tested speech network 1, data transmission network 2, testing terminal 3, center testing terminal 5, testing Control Server 4, central database server 6, analysis management server 7 (voice analysis software, testing planning software), Web server 8 (association analysis and output), GIS server 9.Relevant interface table interaction data in each server through database server.
The 26S Proteasome Structure and Function of testing Control Server 4: the testing Control Server mainly comprises GPRS/CDMA communication gate, networking PC, transmitting/receiving server, resolution server, testing Control Software, terminal station management software.
The formation of analysis management server 7 and function: two softwares of operation---software is formulated in voice test and evaluation software and testing plan on the analysis management terminal.
The function of Web server 8: the Web mode that realizes data is issued, report output etc.
The function of GIS server 9: realize the GIS parent map layer (electronic chart) in area under one's jurisdiction, will write down, carry out the temporal and spatial correlations analysis, obtain data analysis, realize that GIS calculates based on GIS in conjunction with GIS.
Fig. 2 has shown the block diagram of testing terminal
1, processor reading of data from the reference voice file
2, treated device is sent to the DA module
3, the DA module converts digital signal to analog signal and gives antennal interface, and antennal interface sends analog signal
4, antennal interface passes to the AD module with the analog signal of receiving
5, the AD module becomes digital information to pass to processor the analog signal conversion of receiving
6, processor writes file with the digital signal of receiving, generates the degeneration voice document
7, in communication process, processor real-time collection network parameter generates net ginseng file
Fig. 3. shown the sequential chart of testing terminal under 3 kinds of different test modes
One, terminal is to terminal, the testing sequential chart:
1, the calling terminal 3-11 that makes a call
2, calling and called call setup success 3-12
3, the synchronous 3-13 of calling and called test action
4, calling and called are got network parameter 3-14
5, calling and called are carried out test action 3-15
6, calling and called are got network parameter 3-16
7, The Calling Party Hooks On 3-17
8, calling and called reported result 3-18
9,3-19 is finished in test
Two, CTS is to terminal, the testing sequential chart:
10, the calling terminal 3-20 that makes a call
11, calling and called call setup success 3-21
12, the synchronous 3-22 of calling and called test action
13, calling and called are got network parameter 3-23
14, calling and called are carried out test action 3-24
15, calling and called are got network parameter 3-25
16, The Calling Party Hooks On 3-26
17, calling and called reported result 3-27
18,3-28 is finished in test
Three, terminal is to CTS, the testing sequential chart:
19, the calling terminal 3-29 that makes a call
20, calling and called call setup success 3-30
21, the synchronous 3-31 of calling and called test action
22, calling and called are got network parameter 3-32
23, calling and called are carried out test action 3-33
24, calling and called are got network parameter 3-34
25, The Calling Party Hooks On 3-35
26, calling and called reported result 3-36
27, test is finished.3-37
This testing terminal running and function are as follows:
1. receive order: can adopt SMS to be connected the testing Control Server with GPRS; The control command of reception testing Control Server issue (station administration order, measurement pattern setting, task scheduling etc.-on the RTM8000 basis, add).
2. testing function: can be according to the corresponding test function of command execution;
A) caller test: dial to cry and specify survey station; Can dial the called number of appointment and connect the tested speech that appointment is play in the back, and can gather the other side's passback sound and preservation the other side;
B) called test: wait for that the survey station calling can receive the conversation of specifying caller, and adopt winding or present the loop voice in addition according to the instruction decision;
C) loopback test function: after receiving the loopback test order, the voice signal that receives is sent again, make the center can measure the quality of voice transmission in whole loop---be generally used for test loop time delay index test;
D) various tests all can send reference voice, reception and storage degeneration voice, and finish the preliminary treatment of degeneration voice.Degeneration voice collecting and compression: adopt 8K16 bit line type pcm encoder to carry out voice collecting, preserve with compression algorithm compression (additional function) back again;
E) messaging parameter in the extraction test process; Comprise the network service parameter before testing, in the test, after the test.
3. sample voice management: have sample voice memory space, can store every sample number of 10 seconds greater than 64 greater than 16Mbits;
4. record storage: have memory capacity, can store 1300 seconds tested speech greater than 16Mbits;
5. record management: can implement management to the test record more than 32 (comprising network parameter and speech data);
6. reported data: test result and test data can according to regularly, mode such as instant passes the center back by SMS and GPRS etc.;
Comprise state and tone testing data;
7. station administration function: in the time of can finishing the school, change configuration feature such as messaging parameter;
8. situ configuration: can carry out functions such as station administration, peek, configuration at the scene;
9.GPS when location and school: design GPS interface under GP configuring S sensor situation, can obtain positional information and calibrate the survey station time by the GPS interface; Hardware designs is all according to having the GPS interface, fixedly do not adorn the GPS receiver and antenna gets final product.The structure of portable terminal and fixed terminal is different
10. station safety: have facility environment status monitoring (humiture, outer power supply state and voltage, cell voltage), a monitoring of unpacking, water inlet monitoring etc.
11. obtain network operation parameter (as LAC, CellID, dBm, Chann, ChMod, RxQ, Error etc.)
12. reference voice management and broadcast: can store at least 10 reference voice, and play specified speech according to the testing plan;
13. power supply: 5～32VDC power supply connects civil power by adapter.Has the ability that connects solar panel.
14. internal cell: the internal system lithium battery can guarantee work 1 hour, standby 2 days.Inside has battery charger.
15. ambient temperature and humidity: reach IP65 degree of protection, ambient temperature-20～80, humidity 15%～80% no condensation
Configuration software and the function of testing terminal TS are as follows:
The situ configuration software of VQIT testing terminal is in order to revise the configuration parameter of VQIT testing terminal in installing and debugging, concrete function requires as follows:
1. can connect VQIT testing terminal by 232/485 bus;
2. can obtain following testing terminal data:
Device numbering, hardware version numbers, software version number, production sequence number
The CallID of our station (telephone number), SIM card number,
The center reports parameter (center ID, APN title, IP address and port numbers)
Current time, current record sum, wait to send out a record number
Current task tabulation and implementation status
Current network parameter (registration scenarios, signal strength signal intensity, base station IDs, sector auxiliary information etc.)
Executed task executions situation
The environmental parameter of testing terminal (humiture, work at present voltage and source)
3. can revise following monitoring configuration data
The center reports parameter (center ID, APN title, IP address and port numbers)
Plan target is added and is deleted, deletes and wait to send out a record
The calibration current time
4. can obtain current equipment running status data and parsing;
5. can extract the test record data
The center Control Software of testing terminal is revised the configuration parameter of VQIT testing terminal in order to be in operation, and concrete function is as follows:
1. can obtain the testing plan from database server by SQL;
2. can assign the testing plan to appointment VQIT testing terminal TS by SMS or GPRS mode, or assign the testing plan to CTS by network;
3. can obtain TS test record data by modes such as SMS/GPRS/CDMA1x/, and can import on-the-spot peek data.CTS obtains by the local area network (LAN) mode.
4. can obtain current terminal equipment running state data and parsing; And testing task implementation progress state
5. can obtain following testing terminal TS station administration data:
Device numbering, hardware version numbers, software version number, production sequence number
The CallID of testing terminal (telephone number), SIM card number
The center reports parameter (center ID, APN title, IP address and port numbers)
Current time, current record sum, wait to send out a record number
The environmental parameter of testing terminal (humiture, work at present voltage and source)
6. can revise following monitoring configuration data
The center reports parameter (center ID, APN title, IP address and port numbers)
Plan target is added and is deleted, deletes and wait to send out a record
The calibration current time
7. can support: the Short Message Service Gateway (both sides finish jointly) of the CMPP3.0 of AsiaINFO, the CMPP3.0 of Huawei, Tsinghua Shenxun Science Technology (Shenzhen) Co., Ltd CMPP3.0, the CMPP3.0 of Neusoft, special-purpose APN, GGSN, PDSN (CDMA gateway) etc.First phase adopts the SMS/GPRS/CDMA gateway of terminal mode, and serial ports connects.
The workflow of native system is:
Plan is formulated
1, by web end program formulate the testing plan (when comprise, caller, called, adopt which kind of testing scheme, reference voice numbering etc.)
2, the testing Control Server is assigned testing plan (if far-end, database will be put in this locality) to main by both sides
Terminal is to the terminal test flow process
Terminal comprises CTS, fixedly TS, mobile TS.
A, terminal equipment adopt short message mode issue, CTS to adopt the network mode issue according to receiving task order: TS.
B, the called testing terminal of caller testing terminal call are set up conversation, and calling and called are finished parameter measurement (seeing " test target and test parameter " for details); Form with GPRS or CDMA sends it back the VAS server with test result, and task is carried out bulletin adopt the note form to send it back the SMS server.
(1) caller makes a call, monitoring connection situation, and connection then begins to send reference voice, receives the voice that storage is received simultaneously;
(2) calledly carry out winding or play voice, gather the voice that storage is received simultaneously according to the scenario test scheme;
(3) network operation parameter of management station's obtaining communication (test) overall process that the network analysis server will be by tested speech network;
(4) finish the back and deposit database in as a test sample book.
C, this testing flow process are finished.
Voice quality analysis
Reference voice in the above-mentioned samples tested and degeneration voice are carried out PESQ calculate, and carry out analysis such as PAMS.Analysis result deposits database server 6 in, is used in combination GIS server 9, reports.
Native system sends audio signal mutually by the testing terminal room, and these audio signals are analyzed by embedded program, identify single-pass, interrupted, mourn in silence, problem phenomenon such as strange sound, passback reception audio frequency is with by professional software acquisition call voice Objective Quality Assessment index PESQ value when requiring at the center.The testing terminal is obtained talking link parameter (network parameter) simultaneously, the conclusion of analyzing together in parallel reports, system is with speech evaluating index and network evaluation and test carrying out correlation analysis, and to effective integration in addition such as database technology, location technology, speech quality and base station data, the parameter of cell setting, mobile test terminal GPS locator data are together entered database, carry out data analysis.Testing terminal in center draws voice quality grade and network parameter correlation analysis assessment by contrast.
The native system workflow is:
Plan is formulated
1, by web end program formulate the testing plan (when comprise, caller, called, adopt which kind of testing scheme, reference voice numbering etc.)
2, the testing Control Server is assigned testing plan (if far-end, database will be put in this locality) terminal to the terminal test flow process to main by both sides
Terminal comprises CTS, fixedly TS, mobile TS.
A, terminal equipment adopt short message mode issue, CTS to adopt the network mode issue according to receiving task order: TS.
B, the called testing terminal of caller testing terminal call are set up conversation, and calling and called are finished parameter measurement (seeing " test target and test parameter " for details); Form with GPRS or CDMA sends it back the VAS server with test result, and task is carried out bulletin adopt the note form to send it back the SMS server.
1: caller makes a call, monitoring connection situation, and connection then begins to send reference voice, receives the voice that storage is received simultaneously;
2: calledly carry out winding or play voice, gather the voice that storage is received simultaneously according to the scenario test scheme;
3: the network operation parameter of management station's obtaining communication (test) overall process that the network analysis server will be by tested speech network;
4: finish the back and deposit database in as a test sample book.
C, this testing flow process are finished.
Voice quality analysis
Reference voice in the above-mentioned samples tested and degeneration voice are carried out PESQ calculate, and carry out analysis such as PAMS.Analysis result deposits database in, reports in conjunction with GIS.
Claims (6)
1. speech quality evaluation system of mobile communication network, tested speech network (1), data transmission network (2) are arranged, it is characterized in that forming by testing terminal (3), testing Control Server (4), center testing terminal (5), database server (6), analysis management server (7), Web server (8), GIS server (9); Relevant interface table interaction data in each server through database server.
2. speech quality evaluation system of mobile communication network according to claim 1, it is characterized in that, testing terminal (3) comprises fixedly testing terminal and the mobile testing terminal of GPS location resolution function is arranged, is made of hardware DA module (3-3), AD module (3-4), processor (3-2) and software reference voice (3-1), degeneration voice (3-5), net ginseng file (3-6).
3. speech quality evaluation system of mobile communication network according to claim 1, it is characterized in that testing Control Server (4) comprises GPRS/CDMA communication gate, networking PC, transmitting/receiving server, resolution server, testing Control Software, terminal station management software.
4. speech quality evaluation system of mobile communication network according to claim 1 is characterized in that, analysis management server (7) contains voice test and evaluation software and testing plan and formulates software.
5. speech quality evaluation system of mobile communication network according to claim 2 is characterized in that, the sequential of the testing terminal under testing terminal (3) different situations is:
One, terminal is to terminal, the testing sequential chart:
1) calling terminal make a call (1)
2) calling and called call setup success (2)
3) calling and called test action synchronous (3)
4) calling and called are got network parameter (4)
5) calling and called are carried out test action (5)
6) calling and called are got network parameter (6)
7) The Calling Party Hooks On (7)
8) calling and called reported result (8)
9) (9) are finished in test
Two, CTS is to terminal, the testing sequential chart:
1) calling terminal make a call (1)
2) calling and called call setup success (2)
3) calling and called test action synchronous (3)
4) calling and called are got network parameter (4)
5) calling and called are carried out test action (5)
6) calling and called are got network parameter (6)
7) The Calling Party Hooks On (7)
8) calling and called reported result (8)
9) (9) are finished in test
Three, terminal is to CTS, the testing sequential chart:
1) calling terminal make a call (1)
2) calling and called call setup success (2)
3) calling and called test action synchronous (3)
4) calling and called are got network parameter (4)
5) calling and called are carried out test action (5)
6) calling and called are got network parameter (6)
7) The Calling Party Hooks On (7)
8) calling and called reported result (8)
9) test is finished.(9)。
6. speech quality evaluation system of mobile communication network according to claim 2 is characterized in that, testing terminal (3) transmits net ginseng file and tested voice document to the analysis management server by the GPRS wireless transmission method, carries out statistical analysis.
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| CN110062113A (en) * | 2019-03-22 | 2019-07-26 | 珠海高凌信息科技股份有限公司 | A kind of speech channel quality detection method and system |
| CN113596261A (en) * | 2021-07-19 | 2021-11-02 | 电信科学技术第十研究所有限公司 | Voice line detection method and device |
| CN113596261B (en) * | 2021-07-19 | 2024-01-05 | 电信科学技术第十研究所有限公司 | Voice line detection method and device |
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