KR100814538B1 - System for controlling call of mobile communication service and its the method - Google Patents

Abstract

The present invention converts a call voice into a data packet when the call sound quality is bad in a poor radio environment and transmits it to the mobile terminal of the opposite party, and the other party plays back the received data packet as a voice and listens to each other. The present invention analyzes the FC signal input by the calling mobile terminal and terminates the connected voice call in passive mode, connects the data communication line with the called MSC through PDSN, and then moves the calling mobile. A calling MSC which repeatedly provides the call contents and the special button provided from the communication terminal to the packet data conversion server, converts the call contents provided from the calling MSC into a voice packet, and converts the voice packet converted according to the special button into PDSN. A packet data conversion server provided through the Receiving service and a destination MSC to repeat delivery to the called mobile communication terminal. Therefore, due to poor sound quality in the area where the radio wave environment is not good as in the past, it is impossible to correctly listen to the other party's voice, so that it is not possible to cope with urgent matters, and thus it is possible to solve problems such as injuries and injuries that cannot be avoided. It is effective to exchange accurate voice with the other party.

Radio environment, bad, voice packet, PDSN

Description

Call quality control system of mobile communication service and its method {SYSTEM FOR CONTROLLING CALL OF MOBILE COMMUNICATION SERVICE AND ITS THE METHOD}

1 is a block diagram of a call sound quality control system of a mobile communication service according to the present invention;

2 is a detailed flowchart for a call sound quality control method of a mobile communication service according to the present invention;

<Description of the symbols for the main parts of the drawings>

101-1, 101-2: BTS 103-1, 103-2: BSC

105-1, 105-2: MSC 107: HLR

109: packet data conversion server 111: packet data conversion DB

S1-1, S1-2: Mobile communication terminal S2: PDSN

The present invention relates to a call sound quality control system and a method of a mobile communication service, and more particularly, when the call sound quality is poor in a radio wave environment bad region, converts the call voice to a data packet and delivers it to the counterpart mobile communication terminal. The present invention relates to a system and a method for communicating with each other while reproducing and listening to a transmitted data packet by voice.

As is well known, as mobile communication services become more common, call patterns of users have been shown to use wired terminals in homes or offices and mobile communication terminals in other regions. The most ideal call pattern is to use only mobile communication terminal anytime and anywhere. In other words, a mobile communication terminal can be used to communicate with each other at home or elsewhere, so that essential calls (eg, urgent or dangerous matters) can be successfully performed.

However, in a poor radio environment, even a mobile communication terminal capable of making a call anywhere in the home or elsewhere cannot carry out necessary calls successfully because of poor radio waves. In other words, even in a region where the radio wave environment is not good, even if the call is connected, the sound quality of the call is not good, and it is impossible to properly listen to the other party's voice due to poor sound quality or interruption, so that it is impossible to cope with urgent matters, resulting in human injury or disaster. And the like becomes inevitable.

Accordingly, the present invention has been made to solve the above-described problems, the object of which is to convert the voice voice to a data packet when the voice quality is poor in the radio wave environment bad area to transmit to the other party's mobile communication terminal, Disclosure of the Invention The present invention provides a system and method for controlling call sound quality of a mobile communication service capable of communicating with each other while reproducing and listening to a transmitted data packet by voice.

According to an aspect of the present invention for achieving the above object, a call sound quality control system of a mobile communication service analyzes an FC signal input by an originating mobile terminal and terminates a connected voice call call in a passive mode, and ends the PDSN. After connecting the data communication line with the called MSC through the call, the calling MSC repeatedly providing the contents of the call and the special button provided from the calling mobile terminal to the packet data conversion server, and the contents of the call provided from the calling MSC. A packet data conversion server which converts the voice packet into a voice packet and provides the voice packet converted according to the special button through a PDSN, and a receiver MSC which receives the voice packet from the packet data conversion server and repeatedly transmits it to the destination mobile terminal. Characterized in that it comprises a.

In addition, the call sound quality control method of the mobile communication service according to another aspect of the present invention for achieving the above object is to analyze the FC signal input by the calling mobile communication terminal in the passive mode, the connected voice call call Terminating, connecting the data communication line with the called MSC through the PDSN, repeatedly providing the call contents and special buttons provided from the calling mobile terminal to the packet data conversion server, and providing the provided call contents as voice packets. And converting and providing the converted voice packet to the called MSC, and repeatedly transmitting the provided voice packet to the called mobile communication terminal.

Hereinafter, a plurality of embodiments of the present invention may exist, and a preferred embodiment will be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate the objects, features and advantages of the present invention through this embodiment.

1 is a block diagram of a call sound quality control system of a mobile communication service according to the present invention, a base transceiver station (Base Transceiver Station, BTS) 101-1, 101-2, and a base station controller (Base Station Controller, BSC) (103-1, 103-2), Mobile Switching Center (MSC) 105-1, 105-2, Home Location Register (HLR) 107, packet data conversion A server 109 and a packet data conversion database (DataBase, DB) 111 are included.

The BTSs 101-1 and 101-2 are network termination devices for call connection to the mobile communication terminals S1-1 and S1-2, and call connection processing services are provided to the mobile communication terminals S1-1 and S1-2. BSC (103) receives a signal corresponding to a specific code (Feature Code, FC) + arbitrary number for controlling the sound quality of the call in the region of bad radio environment while performing the baseband signal processing to provide a BSC (103) -1, 103-2, and receives the voice packet from the BSC (103-1, 103-2) in response to this and sends it to the called-party mobile communication terminal.

The BSCs 103-1 and 103-2 are located between the BTSs 101-1 and 101-2 and the MSCs 105-1 and 105-2 for the mobile communication terminals S1-1 and S1-2. It assigns and releases radio channels, and performs handoff decision and operation and maintenance functions of BTS (101-1, 101-2) while corresponding to FC + random number to control call sound quality in poor radio environment. The received signal is provided from the calling BTS to the calling MSC, and in response, a voice packet is received from the called MSC and provided to the called BTS.

The MSCs 105-1 and 105-2 perform call connection processing functions to the mobile communication terminals S1-1 and S1-2, as well as mobile communication terminals S1-1 and S1- via a VLR (not shown). When performing the location registration procedure and the handoff procedure of 2), if it receives the signal corresponding to the FC + random number to control the call sound quality in the area where the radio wave environment is poor, determine whether it is the automatic mode or the manual mode. According to the mode, the contents of the call are provided to the packet data conversion server 109 through the packet data service node (PDSN) S2, and in response, the destination MSC transmits the packet data conversion server 109. The voice packet is received from the PDSN (S2) via TCP / IP and transmitted to the mobile communication terminal through the called party BSC and BTS.

Here, the random number transmitted from the calling mobile terminal is a number for determining the ratio between delay and quality. For example, the numbers "9" to "1" are the maximum numbers. In order to guarantee the sound quality, no limit is placed on the delay. On the contrary, "1" is a loss of sound quality to eliminate the delay. If a random number signal is not transmitted, the number "9" is automatically set by default. Is determined and transmitted.

In addition, the MSCs 105-1 and 105-2 receive a signal corresponding to the FC for controlling call sound quality in a poor radio environment and analyze the FC signal by analyzing the FC signal to determine whether it is in automatic mode or manual mode. In the manual mode after determining the, the voice call with the destination MSC is terminated, then the data communication with the destination MSC is established through the PDSN (S2), and the contents of the call provided by the calling mobile terminal are transferred to the PDSN (S2). To the packet data conversion server 109, and in response, the destination MSC receives the voice packet from the packet data conversion server 109 through TCP / IP of the PDSN (S2) to receive the destination BSC and BTS. Send to the mobile communication terminal through.

On the other hand, the MSCs 105-1 and 105-2 terminate the voice call with the destination MSC when the decision mode is the automatic mode, and then connect and originate data communication with the destination MSC through the PDSN (S2). Provides the contents of the call provided from the mobile terminal to the packet data conversion server 109 through the PDSN (S2), and in response, the destination MSC sends the voice packet stored at a predetermined time interval unit to the packet data conversion server ( 109) through the TCP / IP of the PDSN (S2) and transmits to the mobile communication terminal via the called party BSC and BTS. Alternatively, when the decision mode is the automatic mode, the MSCs 105-1 and 105-2 terminate the voice call with the destination MSC and then connect the data communication with the destination MSC through the PDSN (S2) and make a call. The contents of the call provided from the mobile communication terminal are provided to the packet data conversion server 109 through the PDSN (S2), and in response, the destination MSC receives the voice packet stored until the time when it is detected that the call is paused for a certain time. Is received from the packet data conversion server 109 via TCP / IP of the PDSN (S2) and transmitted to the mobile communication terminal via the destination BSC and BTS.

The HLR 107 stores subscriber information and location information for all mobile subscribers registered in the mobile communication service, which is information on subscription status for the mobile subscriber and routing information to the packet data conversion server 109. Save it.

The packet data conversion server 109 receives the contents of the call from the MSCs 105-1 and 105-2 through the PDSN (S2), converts them into voice packets, and provides them to the destination MSC through the PDSN (S2).

When the FC analysis result is automatic mode, the packet data conversion server 109 converts the call contents into voice packets in two types and stores them in the packet data conversion DB 111. That is, as a first type, the packet data conversion server 109 converts the call content into a voice packet at a predetermined time interval unit, stores it in the packet data conversion DB 111, and withdraws the stored voice packet to PDSN (S2). ) To the destination MSC. As a second type, when the packet data conversion server 109 detects that the call is paused for a certain time, the packet data conversion server 109 converts the content of the previously provided call into a voice packet and stores it in the packet data conversion DB 111, and stores the stored voice packet. It is withdrawn and provided to the destination MSC through PDSN (S2).

Referring to the flow chart of Figure 2, it will be described in more detail with respect to the call sound quality control method of a mobile communication service according to the present invention.

First, it is assumed that the mobile communication terminal S1-1 is called the calling terminal, and the mobile communication terminal S1-2 is called.

In the assumed state as described above, the calling user requests a call connection to the called mobile communication terminal S1-2 using the mobile communication terminal S1-1 to make a call between the calling / incoming call lines. In the meantime (S201) when the radio frequency environment is poor in a bad radio frequency environment (S203), the calling user inputs an arbitrary number of FC + using the mobile communication terminal (S1-1) (S205).

Then, a signal corresponding to the FC + arbitrary number inputted by the calling mobile terminal S1-1 is provided to the MSC 105-1 through the BTS 101-1 and the BSC 103-1 ( S207).

The MSC 105-1 receives a signal corresponding to an arbitrary number of FC + for controlling call sound quality from the source BSC 103-1 and analyzes the dual FC signal to determine whether it is in automatic mode or manual mode. (S209).

In the passive mode in the determination step S209, the voice call with the destination MSC 105-2 is first terminated (S211).

Thereafter, the MSC 105-1 connects a data communication line with the destination MSC 105-2 through the PDSN S2 and provides the call details and the special button (eg, “#” provided from the mobile communication terminal S1-1). &Quot; * " is provided to the packet data conversion server 109 via the PDSN S2 (S213).

The packet data conversion server 109 converts the call content provided from the MSC 105-1 through the PDSN (S2) into a voice packet (S215), and the destination MSC through the PDSN (S2) according to the execution command of the special button. In step S217, the converted voice packet is provided.

Then, the receiving MSC 105-2 receives the voice packet from the packet data conversion server 109 through the TCP / IP of the PDSN S2 and receives the receiving BSC 103-2 and the BTS 101-2. It transmits to the mobile communication terminal (S1-2) (S219). The mobile communication terminal S1-2 reproduces the voice packet transmitted through the BSC 103-2 and the BTS 101-2 as voice so that the called user can listen (S221).

By repeating the above process, by transmitting / receiving voice packets using mobile communication terminals (S1-1,2) between calling / receiving subscribers, even when the radio frequency environment is poor, accurate voice with the other party Can send and receive

In the case of the automatic mode in the determination step S209, the voice call with the destination MSC 105-2 is first terminated (S223).

Thereafter, the MSC 105-1 connects the data communication line with the destination MSC 105-2 through the PDSN S2 and transmits the PDSN (S2) to the call content provided from the calling mobile terminal S1-1. Provided to the packet data conversion server 109 (S225).

Since the packet data conversion server 109 is an automatic mode of the FC analysis result, two types of data set by each of the mobile communication terminals S1-1 and 2, that is, the first type, are used to transmit the call content in a predetermined time interval unit. The voice packet is converted into a voice packet and stored in the packet data conversion DB 111 (S227), and the stored voice packet is extracted according to a time interval unit and provided to the destination MSC 105-2 through the PDSN (S2) (S229). .

The destination MSC 105-2 receives the voice packet from the packet data conversion server 109 via TCP / IP of the PDSN (S2) in units of time intervals, and the destination BSC 103-2 and BTS 101-2. And transmits to the mobile communication terminal (S1-2) (S231). The mobile communication terminal S1-2 reproduces the voice packet transmitted through the BSC 103-2 and the BTS 101-2 as voice so that the called party can listen to it. By repeating the above process, by transmitting / receiving a voice packet using the mobile communication terminal (S1-1,2) between calling / receiving subscribers, even if the radio frequency environment is poor, accurate voice with the other party Can send and receive

As a second type, when the packet data conversion server 109 detects that the call is paused for a certain time (e.g., the detection of non-speaking breaks, the voice input power from the mobile terminal drops below a certain value). Call content is converted into a voice packet and stored in the packet data conversion DB 111 (S233), and the stored voice packet is retrieved to generate a PDSN (S2). Provided to the destination MSC 105-2 through (S235).

The destination MSC 105-2 receives the stored voice packet from the packet data conversion server 109 until it is paused through TCP / IP of the PDSN S2, and the destination BSC 103-2 and BTS 101 are received. -2) is transmitted to the mobile communication terminal (S1-2) (S237). The mobile communication terminal S1-2 reproduces the voice packet transmitted through the BSC 103-2 and the BTS 101-2 as voice so that the called party can listen to it. By repeating the above process, by transmitting / receiving a voice packet using the mobile communication terminal (S1-1,2) between calling / receiving subscribers, even if the radio frequency environment is poor, accurate voice with the other party Can send and receive

In addition, according to another embodiment of the present invention, when the calling user uses the mobile communication terminal (S1-1) for the first time in a radio wave environment where the high frequency environment is not good, the mobile communication terminal (S1-1) is used. 2) Enter the telephone number of the called user and the FC + random number using) to connect the data communication line with the called MSC 105-2 through the PDSN (S2), and then as in the method shown in FIG. Is converted to the called party's mobile communication terminal (S1-2), and is reproduced as voice so that the called user can listen. By repeating the above process, by transmitting / receiving a voice packet using the mobile communication terminal (S1-1,2) between calling / receiving subscribers, even if the radio frequency environment is poor, accurate voice with the other party Can send and receive

Therefore, if the call sound quality is poor in the radio wave environment, the call voice is converted into a data packet and transmitted to the other party's mobile terminal. In areas with poor radio wave environment, even if the call is connected, the sound quality of the call is not good, and it is impossible to properly listen to the other party's voice due to poor sound quality or disconnection, so it is impossible to cope with urgent matters, thus avoiding casualties or disasters. It can solve the problem of missing and can exchange correct voice with the other party.

In addition, since the present invention is disclosed as a right within the spirit and claims of the present invention, the present invention may include any modification, use and / or adaptation using general principles, and the present invention as a matter deviating from the description of the present specification. It includes everything that falls within the scope of known or customary practice in the art to which it belongs and falls within the scope of the appended claims.

As described above, the present invention converts a call voice into a data packet and transmits it to a counterpart mobile communication terminal when the call sound quality is poor in a radio wave environment bad area, and the counterpart reproduces and listens to the transmitted data packet as voice. By making a call, in the area where the radio wave environment is not good as in the past, even though the call is connected, the call quality is not good, and due to poor sound quality or interruption of the sound, the voice of the other party cannot be heard correctly, and thus the emergency matters cannot be coped with. It is possible to solve the problems that can not be avoided, such as injury or disaster, there is an effect that can send and receive accurate voice with the other party.

Claims (10)

delete A call sound quality control system of a mobile communication service, It analyzes a specific code (Feature Code) signal input by the calling mobile terminal and terminates the connected voice call call in the manual mode, and the called party through the packet data service node (PDSN). After connecting the data communication line with the Mobile Switching Center (MSC), the calling party MSC that repeatedly provides the call data and the special button provided from the calling mobile terminal to the packet data conversion server, A packet data conversion server for converting a call content provided from the calling MSC into a voice packet and providing a voice packet converted according to the special button through a PDSN; Receiving MSC which receives voice packet from the packet data conversion server and repeatedly transmits to the called mobile communication terminal Including; In the automatic mode by analyzing the FC signal, the calling MSC terminates the connected voice call, connects the data communication line with the called MSC through the PDSN, and then displays the contents of the call provided from the calling MS. And repeatedly providing the packet data conversion server, and the destination MSC receives voice packets from the packet data conversion server in units of time intervals and repeatedly sends them to the destination mobile communication terminal. A call sound quality control system of a mobile communication service, It analyzes a specific code (Feature Code) signal input by the calling mobile terminal and terminates the connected voice call call in the manual mode, and the called party through the packet data service node (PDSN). After connecting the data communication line with the Mobile Switching Center (MSC), the calling party MSC that repeatedly provides the call data and the special button provided from the calling mobile terminal to the packet data conversion server, A packet data conversion server for converting a call content provided from the calling MSC into a voice packet and providing a voice packet converted according to the special button through a PDSN; Receiving MSC which receives voice packet from the packet data conversion server and repeatedly transmits to the called mobile communication terminal Including; In the automatic mode by analyzing the FC signal, the calling MSC terminates the connected voice call, connects the data communication line with the called MSC through the PDSN, and then displays the contents of the call provided from the calling MS. And repeatedly providing the packet data conversion server, and wherein the called MSC receives the stored voice packet until it is paused from the packet data conversion server and repeatedly sends the received voice packet to the called mobile communication terminal. The method of claim 2 or 3, In the automatic mode by analyzing the FC signal, the system converts the contents of the call into a voice packet at a time interval set by the mobile communication terminal, stores it in a packet data conversion database (DataBase, DB), and stores the stored voice packet. And a packet data conversion server for fetching the data according to a time interval unit and providing the destination MSC through a PDSN. The method of claim 2 or 3, In the automatic mode by analyzing the FC signal, the system converts the contents of a previously provided call into a voice packet when detecting that the call between the calling / calling mobile communication terminals is paused for a certain time, and converts the packet data into a DB. And a packet data conversion server for storing the stored voice packet and providing the stored voice packet to the called party's MSC through a PDSN. The method of claim 5, wherein The stop detection is a voice quality control system of a mobile communication service, characterized in that the voice input power is lowered below a certain value from the mobile communication terminal for a predetermined time. delete A method for controlling call sound quality of a mobile communication service, Analyzing the FC signal inputted by the calling mobile terminal and ending the connected voice call in passive mode, and connecting a data communication line with the called MSC through the PDSN; Repeatedly providing a call detail and a special button provided from the calling mobile terminal to the packet data conversion server; Converting the provided call content into a voice packet and providing the converted voice packet to the called party's MSC according to the special button; Repeatedly transmitting the provided voice packet to a called-party mobile communication terminal Including; Analyzing the FC signal input by the calling mobile terminal and ending the connected voice call in automatic mode, and connecting a data communication line with the called MSC through a PDSN; Repeatedly providing the contents of the call provided from the calling mobile terminal to the packet data conversion server; Converting the provided call content into a voice packet and storing the converted call packet in a packet data conversion DB, and extracting and providing the stored voice packet according to a time interval unit; Receiving the packet data from the packet conversion server in units of time intervals and repeatedly transmitting the same to the called-party mobile terminal Call sound quality control method of a mobile communication service comprising a. A method for controlling call sound quality of a mobile communication service, Analyzing the FC signal inputted by the calling mobile terminal and ending the connected voice call in passive mode, and connecting a data communication line with the called MSC through the PDSN; Repeatedly providing a call detail and a special button provided from the calling mobile terminal to the packet data conversion server; Converting the provided call content into a voice packet and providing the converted voice packet to the called party's MSC according to the special button; Repeatedly transmitting the provided voice packet to a called-party mobile communication terminal Including; Analyzing the FC signal input by the calling mobile terminal and ending the connected voice call in automatic mode, and connecting a data communication line with the called MSC through a PDSN; When the call of the mobile communication terminal is detected to be paused for a predetermined time, converting the contents of a call provided before into a voice packet, storing the converted voice data in a packet data conversion DB, and extracting and providing the stored voice packet; Repeated transmission of the received voice packet to the called-party mobile communication terminal until it is paused by the packet data conversion server. Call sound quality control method of a mobile communication service comprising a. The method of claim 9, The stopped detection is a voice quality control method of a mobile communication service, characterized in that the voice input power is lowered below a certain value from the mobile communication terminal for a predetermined time.

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