KR20060062659A - Method for providing receiving connecting image service in circuit switching network and system thereof - Google Patents

Abstract

The present invention relates to a method and system for providing an incoming connection video service by changing a call connection procedure. In a method of providing an incoming connection video service according to a preferred embodiment of the present invention, (a) the originating exchange receives a video call connection request signal from the calling terminal to the called terminal, and (b) the called exchange is incoming. Transmitting the received video telephony request signal to a side exchange; (c) the called side exchange transmits the video telephony request signal to the called terminal, and whether the called terminal subscribes to the incoming video service. (D) transmitting a connection confirmation signal to the calling terminal through the calling exchange, in which the called connection video server is connected to the called connection video server when the service is subscribed to; Negotiating, by the calling terminal, for a video call with the incoming connected video server; Transmitting the incoming connection image to a calling terminal, and (g) disconnecting the connection between the calling terminal and the called connection video server when a call call is established between the calling terminal and the called terminal. . According to the present invention, it is possible to provide an incoming connection image using a conventional circuit switched network.

Incoming connection video, call setup, mobile communication terminal, exchange.

Description

A method and system for providing incoming connection video service in a circuit switched network {Method for providing receiving connecting image service in circuit switching network and System}

1 is a flowchart illustrating a video telephone call connection method performed between mobile communication terminals according to the prior art.

2 is a schematic configuration diagram of a system for providing an incoming connection video service according to the prior art;

3 is a block diagram of a system for providing an incoming connection video service in a circuit switched network according to an embodiment of the present invention.

4 is a flowchart illustrating a method of providing an incoming connection video service in a circuit switched network according to an embodiment of the present invention.

5 is a flowchart illustrating a call connection method when providing an incoming connection video service in a circuit switched network according to an embodiment of the present invention.

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

310: calling party terminal

320: calling base station

330: incoming connection video server

340: calling exchange

350: called exchange

360: called base station

370: called terminal

The present invention relates to a method and system for providing an incoming connection video service, and more particularly, to a method and system for providing an incoming connection video service in a circuit switched network by changing a call connection procedure.

In the case of a voice call performed in a mobile communication system according to the prior art, the ring tone received by the calling terminal while the call is connected to the called terminal transmits a ringing sound of the called terminal. It was a signal to inform.

1 is a flowchart illustrating a video telephone call connection method performed between mobile communication terminals according to the prior art. This section focuses on the messages used for No.7 signaling among the common-line signaling defined by ITU-T. The same is true for the voice call except for the parameter for channel setting.

When the calling terminal 310 transmits a call setup request message (SETUP) to the calling exchange 340, the calling exchange 340 sends to the called exchange 350 the number and other information necessary for call processing and routing. In order to transmit the message, ISUP (ISDN User Part Initial Address), which is a message sent in the forward direction, is transmitted, and the receiving side exchange 350 receives the call setup request message (SETUP) to the called side terminal 370. Thereafter, when the called terminal 370 transmits a confirmation message (CALL_CONFIRMED) to the called side exchange 350, the called side exchange 350 receives all of the address information necessary for call setup at the called terminal 370. ISUP ACM (Address Complete), which is a message indicating that the message has been transmitted, is transmitted to the originating exchange 340. Then, when the called terminal 370 transmits a message (ALERTING) about an event occurring during call setup to the called side exchange 350, the called side exchange 350 sends an event occurring during call setup to the calling side exchange 340. ISUP CPG (Call Progress), which is a message transmitted in the reverse direction to notify the calling party, the calling side exchange 340 transmits a message (ALERTING) for the event occurred during call setup to the calling terminal (310). Then, when the destination terminal 370 receives all information necessary for the reception from the destination terminal 370 and transmits a reverse message CONNNECT indicating that the called party has answered the call, the destination side exchange 350 transmits the originating exchange 350. In step 340, ISUP ANM (Answer), which is a message indicating that the called party answered the call, is transmitted, and the calling side exchange 340 transmits a CONNECT message to the calling terminal 310. Thereafter, the calling party terminal 310 and the called party exchanger 350 transmit a connection response message (CONNECT ACK) to the calling party exchange 340 and the called party terminal 370, respectively. A call is set between 370. Here, only the simple ring sound stored in the terminal is transmitted to the calling terminal 310 during the call setup procedure. In the case of a voice call, only a simple ring sound provided by a base station is transmitted.

With the development of circuit switching network technology, an incoming ring tone service is provided, in which a ringing ring tone predetermined by a called party is heard to a caller instead of the simple ring tone as described above. Incoming ring tone service is provided in a manner of connecting the incoming connection video server and the calling party terminal 310 that provides the incoming ringtone until the called party answers the call at the called party exchange 350. In addition, video telephony service has been introduced in accordance with the development of terminal technology and video control technology. However, in the case of video telephony, the role of an exchange is limited to connecting a call between terminals between video terminals. A video / audio codec or a video call packet construction method for the terminal is determined through negotiation between the terminals. Therefore, it is impossible to simply provide an incoming ring tone service provided by an exchange technology in a video telephone, and a technique for providing such incoming ring video service has been researched.

2 is a schematic configuration diagram of a system for providing an incoming connection video service according to the prior art. Referring to FIG. 2 shown in Korean Patent Laid-Open Publication No. 10-2004-0019201, a system for providing an incoming call connection video service according to the prior art includes a caller video telephone 10, a CSCF 12, an AS 14, and an MRF 16. ), Video DB (16a), HLR (18) and the receiver video phone 20, including the incoming connection video service, which is a method that is performed in the IP dimension using the SIP protocol is proposed, circuit switching scheme There is a problem in the network that can not provide the incoming connection video service without applying a separate IP protocol.

Accordingly, an object of the present invention is to provide a method and system for providing an incoming connection video service in a circuit switched network that provides an incoming connection video by changing a call connection procedure.

Another object of the present invention is to provide a method and system for providing an incoming connection video service in a circuit-switched network that provides an incoming connection video using an exchange of a mobile communication system used in the prior art.

Yet another object of the present invention is that even if a terminal that does not support the incoming connection video service proposed by the present invention attempts to make a call, the incoming connection video server does not attempt to negotiate first. The present invention provides a method and system for providing an incoming connection video service in a circuit-switched network capable of providing a smooth service.

Other objects of the present invention will become more apparent through the preferred embodiments described below.

In order to achieve the above object, according to an aspect of the present invention, it is possible to provide a method for providing an incoming connection video service.

In a circuit switched network providing method according to a preferred embodiment of the present invention, (a) the calling exchange receives a video call connection request signal with the called terminal from the calling terminal, (b) Transmitting, by the calling side exchange, the received video call connection request signal to the called side exchange; (c) the called side exchange transmitting the video call connection request signal to the called terminal; Inquiring whether the incoming connection video service is subscribed and accessing the incoming connection video server when the service is subscribed; (d) the incoming connection video server transmits a connection confirmation signal to the calling terminal through the calling exchange. (E) negotiating, by the calling terminal, for a video call with the called video server; and (f) receiving the call. Transmitting, by the new connection video server, the incoming connection video to the calling terminal; (g) when a call call is established between the calling terminal and the called terminal, the connection between the calling terminal and the called video server is released; It may include a step.

Here, in step (d), the incoming connection video server may transmit the connection confirmation signal to the originating exchange via the destination exchange.

Also, in the step (g), a video call may be performed between the calling terminal and the called terminal.

In addition, the calling terminal and the called terminal may be any one of a mobile phone, a smart phone, and a PDA capable of a video call.

In order to achieve the above objects, according to another aspect of the present invention, it is possible to provide a system for providing an incoming connection video service in a circuit switched network.

A system for providing an incoming connection video service in a circuit switched network according to an embodiment of the present invention is connected to a calling terminal, a called exchange, and an incoming connection video server to receive a video call connection request signal received from the calling terminal. An originating exchange that transmits to the called exchange, and transmits a connection confirmation signal with the called connection video server to the calling terminal, and is connected to the calling exchange, the called connection video server and the called terminal, The called party which transmits the video call connection request signal received from the side exchange to the called terminal, and inquires whether the called terminal subscribes to the incoming connection video service, and accesses the called connection video server when the subscriber subscribes to the corresponding service. Connected to the exchange and the calling side exchange and the called side exchange, Wherein the connection confirmation signal is sent to the originating exchange, and may include a called party connected to the video server to wait for a negotiation for a video call with the calling terminal.

In this case, the incoming connection video server may transmit the connection confirmation signal to the originating exchange through the destination exchange.

In addition, when a call call is established between the calling terminal and the called terminal, the connection between the calling terminal and the called video server may be released, and a video call may be performed between the calling terminal and the called terminal.

In addition, the calling terminal and the called terminal may be any one of a mobile phone, a smart phone, and a PDA capable of a video call.

Hereinafter, a preferred embodiment of a method of providing an incoming connection video service and a system thereof in a circuit switched network according to the present invention will be described in detail with reference to the accompanying drawings. The same or corresponding components will be given the same reference numerals and redundant description thereof will be omitted.

3 is a block diagram of a system for providing an incoming connection video service in a circuit switched network according to an embodiment of the present invention. Referring to FIG. 3, the system for providing an incoming connection video service in a circuit switched network according to an embodiment of the present invention includes the calling terminal 310, the calling base station 320, the called connection video server 330, and the calling system. It is configured to include the side exchange 340, the destination side exchange 350, the destination base station 360, the destination terminal 370.

The calling base station 320 and the called base station 360 perform wireless communication with the calling terminal 310 and the called terminal 370 through the calling exchange 340 and the called exchange 350, respectively. Alternatively, the voice call or video data transmitted from the incoming connection video server 330 is transmitted and received.

Incoming connection video server 330 is a server that provides an image on behalf of the calling terminal 310 or the called terminal 370 to provide an incoming video or a replacement video, or a guide video provided when transferring the call or video It can also have the functionality of a mailbox and video answering service (ARS server for voice calls).

The calling terminal 310 or the called terminal 370 may receive the corresponding data from the called video server 330 using the circuit switched network.

4 is a flowchart illustrating a method of providing an incoming connection video service in a circuit switched network according to an embodiment of the present invention.

In step S410, the video call connection request signal with the called terminal 370 is transmitted from the calling terminal 310 to the calling exchange 340, and in step S420, the called exchange 350 in the calling exchange 340. ) Transmits the video call connection request signal received.

In step S430, the called side exchange 350 transmits the video call connection request signal received to the called terminal 370, and in step S440, it is determined whether the called terminal 370 subscribes to the incoming connection video service. If subscribed to the incoming connection video server 330 is accessed.

In step S450, the incoming connection video server 330 transmits a connection confirmation signal to the calling side exchange 340, the connection confirmation signal is sent to the calling terminal (310).

In step S460, the calling terminal 310 attempts to negotiate with the incoming connection video server 330 for a video call. In step S470, when a negotiation for a video call is established, the calling terminal 310 Receives and plays the incoming connection image from the incoming connection image server 330. Even if a terminal that does not support the incoming connection video service mentioned in the present invention attempts to make an outgoing call, the incoming connection video server 330 does not attempt to negotiate first, thereby preventing an error that may occur when an unsupported terminal is sent. .

In step S480, the calling terminal 310 receives a call setup response signal from the called terminal 370, and in step S490, an incoming connection video between the calling terminal 310 and the called video server 330 is received. The connection to send and receive is released.

5 is a flowchart illustrating a call connection method when providing an incoming connection video service in a circuit switched network according to an embodiment of the present invention. Here, as described with reference to FIG. 1, the following description will focus on the message used for the No. 7 signaling method among the common line signaling methods defined by the ITU-T.

In step S503, if the calling terminal 310 transmits a call setup request message SETUP to the calling exchange 340, in step S506, the calling exchange 340 sends the call to the called exchange 350 and the call processing. Send ISUP IAM (ISDN User Part Initial Address) which is a message sent in the forward direction in order to transmit the number and other information necessary for routing, and in step S509, the originating exchange 340 proceeds to the calling terminal 310. By transmitting the signal, in step S513, a radio access bearer (RAB) is established between the originating exchange 340 and the originating terminal 310.

In step S516, the called side exchange 350 checks whether the called terminal 370 subscribes to the incoming connection image providing service, and in step S519, if it subscribes to the service, an ISUP IAM (ISDN User Part Initial Address) message is sent. If it is not subscribed, the connection with the incoming connection video server 330 is not performed and a procedure according to the related art is performed. In step S523, the called side exchange 350 calls the called side terminal 370.

In step S526, the destination connection video server 330 transmits an ISUP ACM (Address Complete), which is a message indicating that all the address information necessary for call setup is received, to the destination side exchange 350, and in step S529, the destination side exchange. 350 transmits the ISUP ACM message to the calling exchange 340, and in step S533, the calling exchange 340 is a reverse message for notifying the calling terminal 310 of information on an event occurring at the calling party. Send PROGRESS.

In step S536, the destination connection video server 330 transmits an ISUP ANM (Answer), which is a message indicating that the called party has answered the call, to the destination side exchange 350, and in step S539, the destination side exchange 350 The ISUP ACM message is transmitted to the originating exchange 340, and in step S543, the originating exchange 340 transmits PROGRESS, which is a reverse message to inform the originating terminal 310 of information on an event occurring at the originating side. . Here, a progress message with a progress descriptor value of 0x41 (H.324 / M information is available) is transmitted. Therefore, in step S546, a negotiation for receiving an incoming connection image is performed between the calling terminal 310 and the called connection video server 330, and then the calling terminal 310 receives an incoming connection from the called connection video server 330. Receive and play video. Thereafter, in steps S549 to S579, a procedure for establishing a call call according to the prior art is performed.

In step S583, when a call is established between the calling party terminal 310 and the called party terminal 370, the called party exchanger 350 sends a REL (release) message, which is a message requesting release of the line, to the called video server 330. In step S586, the incoming connection video server 330 transmits a release complete (RLC), which is a response message to the circuit establishment release request message, to the destination side exchange 350.

In step S589, a negotiation for a video call is performed between the calling terminal 310 and the called terminal 370, and then a video call proceeds.

According to another exemplary embodiment, the incoming connection video server 330 may directly transmit an ISUP ACM (Address Complete) message and an ISUP ANM (Answer) message to the originating exchange 340 without using the destination exchange 350. . In this case, in step S526 described above, the incoming connection video server 330 transmits an ISUP ACM (Address Complete) message to the source exchange 350, and in step S536, sends an ISUP ANM (Answer) message.

The present invention is not limited to the above embodiments, and many variations are possible by those skilled in the art within the spirit of the present invention.

As described above, the method and system for providing an incoming connection video service in a circuit switched network according to the present invention may provide an incoming connection video by changing a call connection procedure.

In addition, the method and system for providing an incoming connection video service in a circuit-switched network according to the present invention can provide an incoming connection video using an exchange of a mobile communication system used in the prior art.

In addition, a method and system for providing an incoming connection video service in a circuit-switched network according to the present invention may attempt to negotiate an incoming connection video server first even if a terminal that does not support the incoming connection video service of the present invention attempts to make an outgoing call. By not doing so, it is possible to provide a smooth service by preventing in advance an error that may occur when an unsupported terminal is sent.

Claims (8)

In the method for providing an incoming connection video service, (a) receiving, by the calling exchange, a video call connection request signal from the calling terminal with the called terminal; (b) the originating exchange transmitting the received video telephony request signal to the called exchange; (c) the called side exchange transmits the video call connection request signal to the called terminal, and inquires whether the called terminal subscribes to the called connection video service, and accesses the called connection video server when the service is subscribed. step; (d) the incoming connection video server transmitting a connection confirmation signal to the calling terminal through the calling exchange; (e) negotiating, by the calling terminal, for a video call with the incoming connected video server; (f) the incoming connection video server transmitting the incoming connection video to the calling terminal; And (g) disconnecting the connection between the calling terminal and the called video server when the call is established between the calling terminal and the called terminal. How to Provide. The method of claim 1, In step (d), And the called connection video server transmits the connection confirmation signal to the calling side exchange via the called side exchange. The method of claim 1, In the step (g), And a video call is performed between the calling terminal and the called terminal. The method of claim 1, The calling terminal and the called terminal are any one of a mobile phone, a smart phone, and a PDA capable of a video call. In an incoming connection video service providing system, It is connected to a calling terminal, a called exchange, and a called video server to transmit a video call connection request signal received from the calling terminal to the called exchange, and sends a connection confirmation signal to the called video server. An originating exchange that transmits to the terminal; Connected with the calling exchange, the called video server and the called terminal, transmitting the video call connection request signal received from the calling exchange to the called terminal, and subscribing to the called terminal video service of the called terminal. A called-side exchanger accessing the incoming-connection video server when inquiring whether to subscribe to the corresponding service; And And a terminating connection video server connected to the originating exchange and the called exchange, transmitting the connection confirmation signal to the originating exchange and negotiating a video call with the originating terminal. A system for providing incoming connection video service in a switched network. The method of claim 5, And the called connection video server transmits the connection confirmation signal to the calling side exchange via the called side exchange. The method of claim 5, When the call is established between the calling terminal and the called terminal, the connection between the calling terminal and the called video server is released, and a video call is performed between the calling terminal and the called terminal. A system for providing incoming connection video service in a switched network. The method of claim 5, The calling terminal and the called terminal are any one of a mobile phone, a smart phone, and a PDA capable of making a video call.

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