KR101461237B1

KR101461237B1 - Apparatus and method of detecting bad voice quality using voice activity

Info

Publication number: KR101461237B1
Application number: KR1020080040326A
Authority: KR
Inventors: 한선욱
Original assignee: 주식회사 엘지유플러스
Priority date: 2008-04-30
Filing date: 2008-04-30
Publication date: 2014-11-12
Also published as: KR20090114604A

Abstract

The present invention relates to an apparatus and method for detecting a sound quality defect using a voice activity, and more particularly, to a system and method for detecting a sound quality defect using a voice activity, And to a method for detecting a sound quality defect using the voice activity.

The packet data processing board 110 broadcasts a voice activity collection command, collects and transmits at least one base station Rx / Tx frame rate information, and transmits the voice activity collection command to the Rx / A control station (100) having at least one vocoder processing board (120) for collecting Tx frame rate information and reporting to the packet data processing board (110); When the operator sets up the voice activity collection, it transmits a command to the packet data processing board 110 and then receives at least one base station Rx / Tx frame rate information collected from the packet data processing board 110 And a call quality management server (200) for checking a poor quality of call quality for all subscribers in a control station and an exchange station on the basis thereof.

Mobile communication, control station (BSC), voice activity, poor call quality,

Description

TECHNICAL FIELD [0001] The present invention relates to an apparatus and method for detecting a sound quality using a voice activity,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a voice quality defect detection apparatus and method using a voice activity, and more particularly, to a voice quality defect detection apparatus and a voice quality detection method using a voice activity in a base station controller (BSC) and a mobile switching center The present invention relates to a voice quality defect detection apparatus and a voice quality detection method using a voice activity that automatically checks a customer's perceived poor call quality status for all subscribers and quickly copes with them.

As we all know, modern information and communication industries such as telecommunication and broadcasting have rapidly developed thanks to technological innovation. Among these situations, the field of mobile communication is particularly evident. However, the growth of such mobile communication industry leads to new technologies and services such as digital broadcasting, next generation mobile communication (4G), wireless data communication (wireless LAN, portable internet) and various contents development, Has become a new growth engine that creates value.

Accordingly, mobile communication service providers have developed technologies such as Enhanced Variable Rate Codec (EVRC) for improving service and system efficiency of mobile communication subscribers, which is a method of encoding voice information variably according to the amount of voice information . That is, EVRC extracts only voice characteristics from 64Kbps data of PCM in order to increase frequency utilization efficiency, and obtains three data rates (Full rate, Half rate, Eighth rate) (EVRC does not use a 1/4 rate (Quarter rate)).

Therefore, EVRC performs speech coding at a low rate of information in a silent section where the speaker does not speak, and high-speed coding in a case where the amount of information is large. Therefore, the efficiency of the system is improved as compared with the previous system in which coding is always performed at a constant speed, thereby increasing the system capacity of the CDMA mobile communication system and saving power consumption.

However, in the conventional mobile communication system, there is no function to measure the customer perceived call quality for all the subscribers in the control station and the switching center using the voice activity of the above-described EVRC. That is, in the conventional mobile communication system, when measuring the customer perceptual call quality of the control station and the switching center, it is necessary to check the interval of the customer's re-calling status to estimate the poor call quality quality, The service quality related to the communication quality of the subscribers is reduced and the service efficiency is significantly lowered because of the frequent complaints.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to automatically check the state of bad customer call quality for all subscribers in the BSC and the MSC by using the voice activity, In addition to maximizing the satisfaction of customers' service, it is possible to monopolize superiority in competitiveness with other companies. In addition, the mobile communication service provider can detect the quality of voice quality using voice activity And an object thereof is to provide an apparatus and a method therefor.

To solve the above-mentioned problem, the apparatus for detecting bad sound quality using the voice activity of the present invention broadcasts a voice activity collection command and then receives at least one Rx / Tx frame rate information (Rx / Tx frame rate) A Rx / Tx frame rate (Rx / Tx Frame Rate) information is received from the packet data processing board, and the Rx / Tx frame rate information is reported to the packet data processing board A control station having at least one vocoder processing board; And

When the operator sets up the voice activity collection, a command corresponding to the command is transmitted to the packet data processing board of the control station, and at least one base station Rx / Tx frame rate collected from the packet data processing board, (BSC) and an exchange (MSC) section on the basis of the received information and displaying a result of the deterioration of call quality of the subscriber to all the subscribers on the basis of the received information. do.

According to another aspect of the present invention, there is provided a method for detecting a sound quality defect using a voice activity, the method comprising: a control station having a packet data processing board and at least one vocoder processing board; A voice quality defect detection method using a voice activity in a mobile communication system having a call quality management server,

101. The method of claim 10, wherein the packet data processing board periodically broadcasts a voice activity collection command to the at least one vocoder processing board according to an instruction from the call quality management server.

102. The method of claim 10, wherein the at least one vocoder processing board collects at least one Rx / Tx frame rate information and periodically reports the Rx / Tx frame rate to the packet data processing board.

The packet data processing board receives at least one base station Rx / Tx frame rate (Rx / Tx Frame Rate) information from the at least one vocoder processing board, collects the Rx / Tx frame rate information and periodically transmits the Rx / Tx frame rate to the call quality management server step; And

The communication quality management server receives at least one base station Rx / Tx frame rate information collected from the packet data processing board and then transmits the Rx / Tx frame rate information of the BSC and the MSC And a step 104 of checking the poor quality of the call quality for the subscriber and displaying it to the operator.

According to the present invention, by using voice activity, the customer can automatically check the state of poor call quality for all the subscribers in the control station (BSC) and the switching center (MSC) section and quickly cope with them. Not only does it dominate the edge in competitiveness with other companies,

From the viewpoint of mobile communication service providers, it has an excellent effect of improving work efficiency by preventing the causes of civil complaints in advance.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a configuration of a sound quality defect detection apparatus using a voice activity according to the present invention will be described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a network configuration diagram showing a configuration of a sound quality defect detection apparatus utilizing a voice activity according to the present invention; FIG.

1, a voice quality defect detection apparatus using voice activity includes a control station 100 having a packet data processing board 110 and at least one vocoder processing board 120, a call quality management server 200 ).

In this case, the packet data processing board 110 of the control station 100 is not an audio call but an HSVC that processes only a packet data call. When receiving a voice activity collection command from the call quality management server 200, (SetGlobalAct_SIG) to the at least one vocoder processing board (120) as if the at least one vocoder processing board (120) has received at least one base station Rx / Tx frame rate Rx / Tx Frame Rate) information to the call quality management server 200 in a signal form (RmtVoiceAct_SIG) as shown in FIG. 4 after collecting the Rx / Tx Frame Rate information.

In addition, at least one vocoder processing board 120 in the control station 100 may be a SVC (Selector Vocoder) having a vocoder, which is a physical resource mounted on the control station 100 and capable of receiving a voice call, (Rx / Tx Frame Rate) information when receiving a voice activity collection command from the packet data processing board 110, as shown in FIG. 3, and transmits the Rx / Tx frame rate information to the packet data processing board 110 ), Respectively.

At this time, the collection time of the voice activity is set to a time point after time allocation (Timesync) after the channel allocation. The collection item includes resource information including call information, vocoder information, and MCPA information, Rx frame rate information including half rate (Half), quarter (quarter), 1/8 (Eighth), and erase rate information. On the other hand, it is desirable to implement the collection period so that parameter tuning is possible.

In addition, the Rx frame rate is collected as Full, Half, Quarter, Eighth, and Erase rate information, while the Tx frame rate is Collect in Full, Half, Quarter, and Eighth.

Meanwhile, when the operator sets up the voice activity collection, the call quality management server 200 transmits a corresponding command to the packet data processing board 110 of the control station 100, (Rx / Tx Frame Rate) information collected from the data processing board 110 based on the Rx / Tx frame rate information received from the BSC and the MSC, After checking the bad status, it displays the result to the operator.

At this time, the voice activity failure criterion set in the call quality management server 200 is "voice activity <0.2 and call duration 7 to 15 (sec)". As a result of the experiment, as shown in FIG. 5, among call silence data, 14 calls out of 15 calls have a call quality complaint (93.3%) in a call duration of 7 to 15 (sec) In the case of less than 6 (sec), the accuracy of call termination is lowered when the call is terminated after a short conference call or other purposes. When the call quality is over 15 (sec) The accuracy of the proposed method is lowered.

In addition, the call quality management server 200 may display the equipment and the replacement and repair information of the equipment and the board to the operator after checking the poor quality of call quality for all subscribers in the control station (BSC) and the exchange (MSC) , And helps the operator to take action promptly.

Next, sound quality defect detection using a voice activity according to an embodiment of the present invention using the apparatus having the above-described structure will be described with reference to FIG.

3, the packet data processing board 110 periodically broadcasts a voice activity collection command to the at least one vocoder processing board 120 according to a command of the call quality management server 200 (S101).

Then, the at least one vocoder processing board 120 collects at least one base station Rx / Tx frame rate information and then transmits the Rx / Tx frame rate information to the packet data processing board 110 Periodically (S102). At this time, the Rx frame rate is collected as Full, Half, Quarter, Eighth, and Erase rate information, while the Tx frame rate is Collect in Full, Half, Quarter, and Eighth.

The packet data processing board 110 receives at least one base station Rx / Tx frame rate (Rx / Tx Frame Rate) information from the at least one vocoder processing board 120, And periodically transmits it to the call quality management server 200 as shown (S103).

Then, the call quality management server 200 receives at least one base station Rx / Tx frame rate information collected from the packet data processing board 110, and transmits the Rx / Tx frame rate information to the control station BSC, And a switching center (MSC), and displays it to the operator (S104). In operation 104, when the call quality management server 200 checks the poor call quality status of the customers, the voice activity failure criterion "voice activity < 0.2 &Quot; 15 (sec) ".

In step 104, the call quality management server 200 checks the quality of a bad reception quality for all subscribers in the control station BSC and the exchange MSC, And displaying replacement and repair information.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the present invention is not limited to the disclosed exemplary embodiments, but may be modified and changed without departing from the scope and spirit of the invention. A modification can be made.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a network diagram showing a configuration of a sound quality defect detection apparatus utilizing a voice activity according to an embodiment of the present invention;

2 is a flowchart illustrating a method for detecting a sound quality defect using a voice activity according to an exemplary embodiment of the present invention.

FIG. 3 is a signal flow diagram for explaining a sound quality defect detection method using the voice activity according to FIG. 2,

FIG. 4 is a view showing an Rx / Tx Frame Rate information collection command signal RmtVoiceAct_SIG for explaining a sound quality failure detection method using the voice activity according to FIG. 2;

FIG. 5 is a graph showing an experimental result of the voice activity failure criterion selection process in the voice quality defect detection method using the voice activity according to FIG.

Description of the Related Art

100: Control station (BSC)

110: Packet Data Processing Board (HSVC)

120: Vocoder processing board (SVC)

200: call quality management server

Claims

A packet data processing board for collecting and transmitting the at least one base station Rx / Tx frame rate information when broadcasting the voice activity collection command and receiving the at least one base station Rx / Tx frame rate information; A control station having at least one vocoder processing board for receiving Rx / Tx frame rate information and reporting the Rx / Tx frame rate information to the packet data processing board; And

When the operator sets up the voice activity collection, it transmits a command corresponding to the command to the packet data processing board of the control station, and then transmits at least one Rx / Tx frame rate information (Rx / Tx frame rate) collected from the packet data processing board (BSC) and an exchange (MSC) section based on the received voice quality information, and displaying a result of the poor voice quality quality to the operator. Sound quality defect detection device using activity.

The method according to claim 1,

Wherein the packet data processing board of the control station is an HSVC processing packet data only, not a voice call, and the at least one vocoder processing board is an SVC.

The method according to claim 1,

Wherein the acquisition time of the voice activity is set to a time point after a normal time synchronization after the channel assignment.

The method according to claim 1,

Wherein the collection period of the voice activity is set in a manner that parameter tuning is possible.

The method according to claim 1,

The collection items of the voice activity include resource information including call information, vocoder information, and MCPA information; And

Rx frame rate information including Full, Hal, 1/4, 1/8, and Erase rate information. Sound quality defect detection device using activity.

6. The method of claim 5,

The Rx frame rate is collected as Full, Half, Quarter, Eighth, and Erase rate information, while the Tx frame rate is full Wherein the voice activity detection unit collects the voice activity information at a full rate, a half rate, a quarter rate and an eighth rate.

The method according to claim 1,

Wherein the voice activity failure criterion set in the call quality management server is "voice activity <0.2 and call duration 7 to 15 (sec)".

The method according to claim 1,

Characterized in that the communication quality management server displays the equipment and the replacement and repair information of the equipment and the board to the operator after checking the state of the bad reception quality quality for all subscribers in the control station (BSC) and the switching center (MSC) Sound quality defect detection device using activity.

A control station having a packet data processing board and at least one vocoder processing board; A voice quality defect detection method using a voice activity in a mobile communication system having a call quality management server,

101) the packet data processing board broadcasts a voice activity collection command to the at least one vocoder processing board according to a command of the call quality management server;

102. The method of claim 10, wherein the at least one vocoder processing board collects at least one Rx / Tx frame rate information and reports the Rx / Tx frame rate information to the packet data processing board.

A step 103 of receiving the at least one base station Rx / Tx frame rate information from the at least one vocoder processing board, collecting the at least one base station Rx / Tx frame rate information, and transmitting the collected Rx / Tx frame rate information to the call quality management server; And

10. The method of claim 9,

In step 102, the Rx frame rate is collected as Full, Half, Quarter, Eighth, and Erase rate information, while the Tx Wherein the frame rate is collected in Full, Half, Quarter, and Eighth in a voice activity detection method.

10. The method of claim 9,

In step 104, when the call quality management server checks the poor quality of the speech quality of the customers, the user may experience a bodily sensation in accordance with the voice activity failure criterion "Voice activity <0.2 & call duration 7-15 And checking a bad quality state of the call quality.

10. The method of claim 9,

In step 104, the call quality management server checks the status of poor quality call quality for all subscribers in the control station (BSC) and the switching center (MSC) and displays the corresponding equipment and board replacement and repair information Further comprising a voice activity detecting unit for detecting a voice quality defect.