KR100788996B1 - Way conversion system and method for changing voice transmitting way - Google Patents

Abstract

The present invention relates to a method and a system for changing the voice transmission method, and the method according to the present invention comprises the steps of receiving a message for changing the voice transmission method with the second terminal from the first terminal, According to the present invention, the method comprising: determining a current voice transmission method, changing the current voice transmission method to another voice transmission method, and informing the second terminal of the method switching, thereby allowing the user to fluidly transmit the voice. You can change the way.

Half Duplex, Full Duplex, Voice Delivery, PoC, Voice

Description

WAY CONVERSION SYSTEM AND METHOD FOR CHANGING VOICE TRANSMITTING WAY}

1 is a flowchart illustrating a method for switching a voice transmission method according to the present invention.

2 is a view for explaining a system for switching the voice transmission system implemented in the circuit network.

3 is a view for explaining a system for switching the voice transmission implemented in the packet network.

4 is a diagram illustrating timing for implementing a method switching of voice transmission in a packet network.

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

200: method switching system

201: Dedicated SMSC Server

202: voice server

210: first terminal

220: second terminals

The present invention relates to a system and method for changing a voice transmission method, and more particularly, to a method and a system for switching a method for receiving a message from one terminal during a one-to-one or group call to change the current voice transmission method to another voice transmission method. .

Currently, a terminal providing a voice call provides a half- or full-duplex voice transmission method. The half-duplex voice transmission scheme is typically Push-to-Talk (PTT), which was originally introduced by the iDEN technology of a US operator. In addition, the PTT is called as Push-to-Talk over Cellular (PoC) while starting standardization in a PoC working group of a standardization organization called Open Mobile Alliance (OMA). In contrast, the full-duplex method is a voice transmission method used in a general voice call, and means all voice calls capable of simultaneously transmitting and receiving voice in both directions, such as VoIP voice calls. Such a half-duplex or full-duplex voice delivery method may be selectively used as needed, but all terminals currently provide only one of the half-duplex or full-duplex voice delivery methods. Therefore, there is a need for a technical idea that can provide a half- or full-duplex method according to the needs of the user.

The present invention has been made to solve the problems of the prior art as described above, an object of the present invention is to provide a method switching system and switching method that can be changed in the voice transmission scheme in a circuit or packet network.

In order to achieve the above object and to solve the above problems of the prior art, the method of switching the voice transmission method according to the present invention comprises the steps of receiving a message for changing the voice transmission method with the second terminal from the first terminal Confirming a current voice transmission method according to the message, converting the current voice transmission method into another voice transmission method, and informing the second terminal of the method change. do.

The method switching according to an embodiment of the present invention switches to the full duplex method when the current voice transmission method is a half duplex method.

The method switching according to another embodiment of the present invention is characterized in that switching to the half-duplex method when the current voice transmission method is a full-duplex method.

According to an embodiment of the present invention, the method switching may include the method switching if the second terminal allows the method switching, otherwise the method switching may not be performed. .

According to an embodiment of the present invention, the method switching may be performed when the method switching is allowed in the second terminal and all other terminals in the group call when the group call session between the terminals is connected. A switchover is made, otherwise the mode changeover is not made.

The voice switching method switching system according to an embodiment of the present invention receives a message for changing the voice transmission method with the second terminal from the first terminal, and switching to switch the current voice transmission method according to the message. A dedicated Short Message Service Center (SMSC) server for generating a message, a session to which the first terminal belongs, and a voice transmission method between the first terminal and the second terminal is switched in response to the switching message; And a voice server.

The voice server according to an embodiment of the present invention switches to a full duplex method when the voice transmission method between the first terminal and the second terminal is a half duplex method, and a half duplex method when the voice delivery method is a full duplex method. It is characterized by switching.

According to another exemplary embodiment of the present invention, a system for switching a voice transmission method receives a SIP (Session Initiation Protocol) message for changing a voice transmission method from a first terminal to a second terminal, and according to the SIP message, SIP server for generating a query for switching the voice delivery method, and PoC server for controlling the voice delivery method is switched between the first terminal and the second terminal in response to the query.

The PoC server according to an embodiment of the present invention switches to a full duplex method when the voice transmission method between the first terminal and the second terminal is a half duplex method, and a half duplex method when the voice delivery method is a full duplex method. It is characterized by the switching.

The SIP server according to an embodiment of the present invention transmits a predetermined notification message to the second terminal in response to the SIP message, and receives a predetermined ACK message from the second terminal corresponding to the notification message. In this case, the query is generated.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings and the contents described in the accompanying drawings, but the present invention is not limited or limited to the embodiments.

1 is a flowchart illustrating a method for switching a voice transmission method according to the present invention.

Referring to FIG. 1, in step 101, a server managing call processing between terminals receives a message requesting a change of a voice transmission method from a first terminal to a second terminal. Accordingly, the server checks the voice transmission method between the first terminal and the second terminal in step 102. The message may be a short message or a SIP message including a predetermined identifier. If the first terminal and the second terminal performs a mutual voice call over a network implemented by a circuit network, the message is a short text message including a predetermined identifier, and the server receives the message and receives the identifier. Includes a dedicated SMSC server to verify. The server may further include a voice server that receives a predetermined control signal from the dedicated SMSC server and changes a voice transmission method of the first terminal and the second terminal. According to an embodiment of the present invention, voice transmission may be performed between the first terminal and the second terminal in a half-duplex or full-duplex manner.

The half-duplex method is a communication method for distinguishing a possible direction of communication in a computer channel, a communication line, a modulation / demodulation device, etc., and bidirectional communication is possible, but bidirectional communication simultaneously is not possible. PTT (Push To Talk) method used in the radio, etc. can be seen as a representative example of the half-duplex method. The first terminal and the second terminal according to the present invention, when using the half-duplex voice transmission method, are authorized to speak another user when the end of one user's speech is completed. .

In addition, the full-duplex method is a voice transmission method capable of transmitting and receiving at the same time in voice transmission. According to the first terminal and the second terminal according to the present invention, in the case of using the full-duplex voice transmission method, a plurality of users who make a call can deliver their words in the middle of another user's speech. This is a general voice call.

In step 103, the server switches the current voice transmission method to another voice transmission method. For example, if the first terminal and the second terminal transfers the voice in a half-duplex manner, the server switches the voice transfer scheme between the first terminal and the second terminal to full duplex in step 103. On the contrary, if the first terminal and the second terminal transmit voice in a full duplex manner, the server switches the voice transfer scheme between the first terminal and the second terminal to half duplex in step 103.

In step 104, the server that has switched the voice transmission scheme notifies the first terminal and the second terminal that the voice transmission scheme has been switched. At this time, the server may inform the change of the voice transmission method by a short text message.

According to another embodiment of the present invention, the server may change the voice transmission method between a plurality of terminals in a group call. At this time, the server may change the voice transmission method between the plurality of terminals according to the procedure of step 101 to step 104. In addition, in step 101, a message for requesting a change in the voice transmission method received from a specific terminal may be transmitted by a terminal requesting an initial group call among the plurality of terminals, that is, a terminal having a predetermined control right. In this case, when the switch of the voice transmission method is requested, the switch of the voice communication method may be enabled only if all terminals participating in the group call session allow it. That is, when a group call session between three or more terminals is connected, the server permits the method switching in all other terminals in a group call except for a terminal that has transmitted a message requesting a change of the voice transmission method. The mode switching of the voice transmission is made, otherwise the mode switching can be prevented.

FIG. 2 is a diagram for describing a voice transmission mode switching system 200 implemented in a circuit network.

As shown in FIG. 2, the scheme switching system 200 includes a dedicated SMSC server 201 and a voice server 202.

First, the dedicated SMSC server 201 receives a message for changing the voice transmission method from the first terminal 210 to the second terminal 220 and switches to switch the current voice transmission method according to the message. Create a message.

In addition, the voice server 202 performs a general SS7 based call processing function and voice distribution according to a voice call. In addition, the voice server 202 checks the session to which the first terminal 210 belongs, and in response to the switching message, a voice transmission method between the first terminal 210 and the second terminal 220 is established. Operate to switch.

More specifically, the first terminal 210 transmits a predetermined message to the dedicated SMSC server 201 in order to switch the voice transmission method with the second terminal 220. At this time, the predetermined message includes an identifier for requesting the switch of the voice transmission scheme. The dedicated SMSC server 201 checks the identifier in the message and generates a switch message to be delivered to the voice server according to the identifier. In addition, the dedicated SMSC server 201 transmits the terminal information of the first terminal 210 which is the sender information of the message together with the generated switching message. The voice server 202 receiving the switch message and the terminal information identifies the second terminal 220 in which a session is established with the first terminal 210, and the first terminal 210 and the second terminal. Check the voice transmission method between the 220. In addition, the voice server 202 changes the confirmed voice transmission method to another voice transmission method according to the switch message.

For example, when the voice transmission scheme is changed, the dedicated SMSC server 201 that receives a predetermined acknowledgment from the voice server 202 generates a predetermined message informing the change of the voice transmission scheme, and is connected to the current session. The message can be sent to the terminals.

FIG. 3 is a diagram for describing a system switching system 300 for voice transmission implemented in a packet network.

As shown in FIG. 3, the scheme switching system 300 includes a SIP server 301 and a PoC server 302.

The SIP server 301 receives a Session Initiation Protocol (SIP) message for changing the voice delivery method from the first terminal to the second terminal, and generates a query for switching the current voice delivery method according to the SIP message. do. In addition, the PoC server 302 controls to switch the voice transmission method between the first terminal and the second terminal in response to the query.

The PoC clients, which are three or more terminals including the first terminal 310 and the second terminal 320, may be a group call terminal and may transmit a SIP message. Unless otherwise mentioned, PoC clients including the first terminal 310 and the second terminal 320 are used in the same meaning as PTT service subscribers.

The access network 360 refers to an access network in an existing cellular network or VoIP network. As a specific example, the access network 360 may include a base station transceiver system (BTS), a base station controller (BSC) and a packet data switching network (PDSN) of IS-95 and CDMA 2000. . The PoC clients including the first terminal 310 and the second terminal 320 can access an IP based PoC network through the access network 360.

The SIP server 301 not only changes the voice delivery method under the control of the PoC server 302, but also basically performs PoC client registration procedures for the PoC service network, establishes a session, and the like. do. The SIP server 301 may be connected to the PSTN of the access network 360, and may be referred to as a proxy.

The PoC server 302 receives a SIP message from the SIP server 301 and performs call processing for a corresponding service after interworking with the Group & List Management System (GLMS) 201. GLMS 201 stores the member information for the group registered by the PoC clients, that is, the information of the service subscriber. The GLMS 201 transmits group member information (eg, subscriber's ID, terminal number, etc.) to the PoC server 130 at the request of the PoC server 302, and the GLMS management unit 202 transmits the GLMS 201. Perform management for).

Presence Server (203) is a server that stores status information such as online status and location of PTT service subscribers, and registers and maintains the current location of users who are online to inform users who want this information. Enables immediate communication service.

That is, while PoC clients perform a group call through a group session, when a specific terminal transmits a SIP message for switching the voice delivery method, the current voice delivery method of the group call is changed to another voice delivery method. For example, when the PoC clients connected to the group session deliver voice in a half duplex manner, the scheme switching system 300 switches the voice transfer scheme in a full duplex manner, and the PoC clients deliver voice in a full duplex manner. In this case, the voice transmission method may be switched to the half duplex method.

3 illustrates the method switching system 300 according to the present invention in a packet network through the PoC server 302, the method switching system 300 may be implemented as a voice server in a VoIP network.

According to the present invention, the SIP server 301 may transmit a predetermined notification message to the second terminal 320 in response to the SIP message, and determine whether to change the voice transmission method according to the response of the notification message. have. That is, according to the SIP message of the first terminal 310 requesting the change of the voice transmission method, the SIP server 301 may change the voice transmission method to the second terminal 310 connected to the current session. Ask for confirmation. Accordingly, when the second terminal 310 transmits a response for allowing the voice transmission method, the SIP server 301 performs a series of procedures according to the change of the voice delivery method.

4 is a diagram illustrating timing for implementing a method switching of voice transmission in a packet network.

Referring to FIG. 4, the SIP server 301 receives a SIP message requesting a change of a voice transmission method from the first terminal 310 (401). Accordingly, the SIP server 301 generates a predetermined query based on the SIP message and transmits the generated query to the PoC server 302 (402). Accordingly, the PoC server 302 checks the session between the first terminal 310 and the second terminal 320 in response to the query, and confirms which voice transmission method. As a result, the PoC server 302 switches the voice transmission method between the first terminal 310 and the second terminal 320 according to the query. If the voice transmission method is a half-duplex method, the full-duplex method is switched to the full duplex method.

The PoC server 302 which has switched the voice delivery method notifies all the terminals connected to the current session through the SIP server 301 of the voice delivery method change (403). In addition, the PoC server 302 transmits an ACK for a query from the first terminal 310 through the SIP server 301 (404).

As a result, the scheme switching system 300 in the circuit network or the packet network according to the present invention may flexibly change the voice transmission scheme in the case of the need for floor control or for the free call without the need for floor control.

Embodiments of the invention include a computer readable medium containing program instructions for performing various computer-implemented operations. The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination. The media may be those specially designed and constructed for the purposes of the present invention, or they may be of the kind well-known and available to those having skill in the computer software arts. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tape, optical recording media such as CD-ROMs, DVDs, magnetic-optical media such as floppy disks, and ROM, RAM, and flash memory. Hardware devices specifically configured to store and execute program instructions, and the like. The medium may be a transmission medium such as an optical or metal wire, a waveguide, or the like including a carrier wave for transmitting a signal specifying a program command, a data structure, or the like. Examples of program instructions include not only machine code generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like.

As described above, the present invention has been described by specific embodiments such as specific components and the like, but the embodiments and the drawings are provided only to help a more general understanding of the present invention, and the present invention is not limited to the above embodiments. For those skilled in the art, various modifications and variations are possible from such description.

Therefore, the spirit of the present invention should not be limited to the described embodiments, and all the things that are equivalent to or equivalent to the claims as well as the following claims will belong to the scope of the present invention. .

According to the present invention, it is possible to provide a method switching system and a method for switching a voice transmission scheme in a circuit or packet network.

According to the present invention, it is possible to provide a convenient voice call to the user by fluidly changing the voice transmission method under the control of the voice.

Claims (10)

In the method for switching the voice transmission method in a server managing call processing between terminals, Receiving a message for changing a voice transmission method with a second terminal from the first terminal; Confirming a current voice transmission method according to the message; Changing the confirmed voice transmission method to another voice transmission method according to whether or not the second terminal is related to the method switching; And Informing the second terminal of the method change. Method of switching the voice transmission method comprising a. The method of claim 1, The step of switching the manner, Switching to full duplex when the current voice transmission scheme is half duplex; Method of switching the voice transmission method comprising a. The method of claim 1, The step of switching the manner, Switching to half-duplex when the current voice transmission scheme is full-duplex; Method of switching the voice transmission method comprising a. delete The method of claim 1, When the first terminal is connected to the group including the second terminal in a group call session, Mode switching of the confirmed voice delivery scheme to another voice transfer scheme when all terminals in the group connected to the group call session are allowed in connection with the mode switching; or If the terminal does not allow all terminals in the group connected to the group call session in connection with the method switching, the method does not switch the confirmed voice transmission method to another voice transmission method. Method of switching the voice transmission method further comprising. A dedicated Short Message Service Center (SMSC) server that receives a message for changing a voice transmission scheme with a second terminal from a first terminal and generates a switching message for switching a current voice transmission scheme according to the message; And A voice server that checks a session to which the first terminal belongs and controls to switch the voice transmission method between the first terminal and the second terminal in response to the switch message. Voice transmission mode switching system comprising a. The method of claim 6, The voice server switches to a full duplex method when the voice transmission method between the first terminal and the second terminal is a half duplex method, and switches to a half duplex method when the voice delivery method is a full duplex method. Way of switching system. A SIP server for receiving a Session Initiation Protocol (SIP) message for changing a voice transmission method from the first terminal to the second terminal and generating a query for switching the current voice transmission method according to the SIP message; And PoC server for controlling the voice transmission method is switched between the first terminal and the second terminal in response to the query Voice transmission mode switching system comprising a. The method of claim 8, wherein the PoC server, When the voice transmission method between the first terminal and the second terminal is a half-duplex method, the full-duplex system is switched, and if the voice transmission method is a full-duplex system, the system for switching the voice transfer method, characterized in that the half-duplex method . The method of claim 8, The SIP server transmits a predetermined notification message to the second terminal in response to the SIP message, and generates the query when receiving a predetermined ACK message from the second terminal corresponding to the notification message. Characterized in the system of the voice transmission system.

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