KR100815560B1 - System and method for providing image ring-back tone in mobile communication network - Google Patents

Abstract

A system and a method for providing a video call tone in a mobile communication network are provided to convert protocols and media for a video call service between a WCDMA(Wideband Code Division Multiple Access) and a BcN(Broadband convergence Network) through a video gateway in real time, thereby providing the video call tone between a wired network and a wireless network. A video call tone contents provider(140) stores video call tone contents. A video call tone service server(120) provides the video call tone contents of the video call tone contents provider to a calling terminal(190) which waits for a video call connection with a called terminal(160). A mobile communication exchange(110) requests the called terminal to perform a video call when there is the video call request to the called terminal, requests the video call tone service server to perform a video call tone service, and receives the video call tone contents. A video gateway(170) converts the video call tone contents so as to be provided on a wired network for providing the video call tone contents to the calling terminal on the wired network. A wired network switch(180) transmits the converted video call tone contents to the calling terminal.

Description

System and Method for Providing Image Ring-Back Tone in Mobile Communication Network}

1 is a configuration diagram schematically showing a system for providing a video call ringtone according to an embodiment of the present invention.

2 is a block diagram of an image gateway according to an embodiment of the present invention.

3 is a flowchart illustrating a process of providing a video call ring tone according to an embodiment of the present invention.

4 is a flowchart illustrating a process of processing video call ring tone content in a video gateway according to an embodiment of the present invention.

The present invention relates to a system and method for providing a video call connection sound in a mobile communication network. More specifically, the present invention relates to a system and method for providing a video call connection sound provided by a WCDMA network to a wired terminal of a wired BcN network.

Circuit-based video telephony services are provided in WCDMA (WCDMA) networks, which are currently mobile networks, and are called broadband broadband convergence networks (BcNs). Is under development to enable IP-based video telephony services. The WCDMA network uses the H.324M protocol and the BcN uses the Session Initiation Protocol (SIP).

Meanwhile, since the WCDMA network and the BcN network, which are heterogeneous networks, use different protocols for video telephony services, a video gateway for converting protocols and media between the two networks in real time is required for interworking video telephony services. .

However, the existing video gateway is designed to allow the called subscriber to service the called party's video only when answering, and there is a problem in that video data serviced while attempting a video call such as a video call ring tone service is unavailable.

In order to solve such a problem, it is to provide an apparatus and method for converting a protocol and media for a video ring back tone service between a WCDMA network and a BcN network between heterogeneous networks in real time.

According to an aspect of the present invention, there is provided a system for providing a video call ring tone in a mobile communication network, comprising: a video call ring tone content provider storing video call ring tone content; A video call ring tone service server for providing video call ring tone content of the video call ring tone content provider to a calling terminal waiting to be connected to a video call with a called terminal; A mobile communication exchange requesting a video call to the called terminal upon request of a video call to the called terminal, requesting a video call ring tone service to the video call ring tone service server, and receiving the video call ring tone content; A video gateway converting the video call connection sound content provided by the mobile communication switch to the calling terminal existing in the wired network so as to be serviceable in the wired network; And a wired network switch configured to transmit the video call connection sound content converted by the video gateway to the calling terminal.

A method of providing a video call ring tone in a mobile communication network, the method comprising: a) receiving a video call from a wired network to a calling terminal; b) requesting a connection for a video call to a called terminal located in a wireless network; c) receiving video call ring tone content information through negotiation with a video call ring tone service server; And d) converting the video call ring tone content received from the video call ring tone service server to the wired network using the video call ring tone content information and transmitting the converted video call ring tone content to a calling terminal. Include.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted for simplicity of explanation, and like reference numerals designate like parts throughout the specification.

In addition, when a part is said to "include" a certain component, this means that it may further include other components, except to exclude other components unless otherwise stated.

1 is a configuration diagram schematically showing a system for providing a video call ringtone according to an embodiment of the present invention.

Referring to FIG. 1, a system for providing a video call ring tone according to an embodiment of the present invention includes a mobile communication switch 110, a video call ring tone service server 120, a video gateway 170, and a BcN (BcN: Broadband Convergence Network). (Hereinafter, referred to as BcN) switch 180.

The mobile communication switch 110 is responsible for video phone call processing in a WCDMA (WCDMA) network, and provides a video call ring service to a BcN terminal 190 joined to a BcN network. It serves as a control to provide. That is, when the mobile communication switch 110 receives a video phone call from the BcN terminal through the video gateway 170, the mobile communication switch 110 sends a paging signal according to the video phone call to the called terminal 160. Sending, and determines whether the incoming call terminal 160 is subscribed to the video call ring tone service.

If the called terminal 160 is subscribed to the video call ring tone service, the video call ring tone service server 120 informs that the video call call connection request has been made to the corresponding video call ring tone service server 120 to connect the video call ring tone service. .

Subsequently, when the mobile communication switch 110 receives a response from the video call connection service server 120 that receives the video call call connection request, the mobile communication switch 110 provides a video call connection service until the user of the called terminal 160 answers. The CPG message, which is the primary video codec negotiation request message, is transmitted to the video gateway 170 to connect a channel.

When the video call connection sound service server 120 is notified that the video call connection request has been received through the mobile communication switch 110, the video call connection sound service server 120 performs a first H.324M codec negotiation for providing the corresponding video call connection content.

Here, the first H.324M codec negotiation is a process of informing the video gateway 170 of the video and audio codec used to provide the video call back tone content, and when the negotiation is completed, the video call back tone service server 120 Receives a video call ring tone content registered and used by a user of the receiving terminal 160 from the video call ring tone service SCP (130). In this case, the video ring back tone content to be used is provided from a video call ring tone content provider (CP) 140 according to a user's registration purchase of the called terminal 160.

Subsequently, the corresponding video call ring tone content is delivered to the video gateway 170 through the mobile communication switch 110, and the video gateway 170 is received by referring to the information received during the first H.324M codec negotiation process. Until the corresponding video call ring tone content is converted to match the BcN network and delivered to the BcN terminal 190 requesting the video call.

The video gateway 170 is a gateway for converting a protocol and media for providing a video telephony service and a video ring back tone service between a WCDMA network and a BcN network between heterogeneous networks in real time.

The configuration and operation process of the image gateway 170 according to an embodiment of the present invention will be described in detail below.

The BcN switch 180 is responsible for video telephone call processing in the BcN network. In addition, the BcN switch 180 has a video call to the video gateway 170 when a video call is generated from the BcN terminal 190 joined to the BcN network to the receiving terminal 160 supporting the video call subscribed to the WCDMA network. And the video call connection sound content provided by the WCDMA network through the video gateway 170 until the called terminal 160 receives the call, and delivers it to the corresponding BcN terminal 190. At this time, the video gateway 170 converts and transmits the video call ring tone content transmitted by the protocol used in the WCDMA network corresponding to the protocol of the BcN network, and the BcN terminal 190 receiving the video call ring tone content receives the video call. The video call connection sound content is displayed until the terminal 160 responds.

2 is a block diagram of an image gateway according to an embodiment of the present invention.

2, a video gateway according to an embodiment of the present invention includes a SIP proxy server 171, a signaling gateway server 173, a media gateway server 175, and a video gateway management. Server (OA & M) 177.

The SIP proxy server 171 processes SIP protocol messages transmitted and received from the BcN terminal 190 subscribed to the BcN network.

The SG server 173 is in charge of processing Internet Service Digital Network (ISDN) User Part (ISP) messages transmitted and received from the WCDMA network.

The MG server 175 converts the information received from the video ring back tone service server 120 through the H.324M negotiation process and converts the media type between the BcN network and the WCDMA network in the form of a media to the SIP proxy server 171 and the SG server ( It is in charge of mutual conversion between messages received through 173). That is, the MG server 175 is in charge of mutual conversion of messages between the BcN network and the WCDMA network to provide a video ring back tone service, and performs a conversion operation for providing the video ring back tone content provided from the WCDMA network to the BcN network. do.

The video gateway management server 177 is a video gateway management server and performs operational management and failure management of the video gateway 170.

3 is a flowchart illustrating a process of providing a video call ring tone according to an embodiment of the present invention.

Hereinafter, referring to FIG. 3, first, when a video call connection request is received from the BcN terminal 190 to the called terminal 160 by the BcN switch 180, the BcN switch 180 receives the request message through an INVITE message. The video gateway 180 receives the corresponding INVITE message through the SIP proxy server 171, and the incoming request message of the corresponding BcN terminal 190 to the mobile communication switch 110 of the WCDMA network. IAM (Initial Address) message is delivered (S310).

Subsequently, the mobile communication exchange 110 receiving the IAM message transmits a paging signal to the called terminal 160 receiving the incoming request (S320), and joins the video call connection service of the called terminal 160. It is determined whether or not (321).

If the called terminal 160 is subscribed to the video call ring tone service, the called terminal 160 delivers the video call ring tone service server interworking request message to the mobile communication exchange 110 video call ring tone service server 120. The video call connection sound content request is provided (S323). The message used at this time is an IAM message.

Receiving the video call ring tone service server interworking request message, the video call ring tone service server 120 performs mobile communication of an incoming terminal Idle status information response (ACM) and a video call ring tone service server answer message (ANM). Transfer to the exchange 110 (S325).

Subsequently, the mobile communication exchange 110 transmits the first video codec negotiation request message (Call Progress) (CPG) to the video gateway 170 (S330), and the mobile communication exchange 110 switches the video gateway 170 and the BcN switch. The BcN terminal 190 notifies the start of the video call connection sound service through the 180 (S331).

The video call ring tone service server 120 performs a first H.324M negotiation with the video gateway 170 based on the video call ring tone subscription information of the called terminal 160 (S340). At this time, the video gateway 171 is used for the video and audio codec used to configure the corresponding video call ring tone content from the video call ring tone service server 120 during the first H.324M negotiation process with the video call ring tone service server 120. You will receive information.

Here, the video gateway 170 that has received information about the video and audio codec used to configure the corresponding video call tone content from the video call ring tone service server 120 is a video call ring tone transmitted from the video call ring tone service server 120. The content is changed into an RTP packet based on the corresponding video and audio codec, and the content is transferred to the BcN terminal 190 requesting to connect the video call of the BcN network until the called terminal 160 is connected (S350).

Then, when the video call is connected to the receiving terminal 160 (S360), the mobile communication exchange 110 through the video gateway (170) through the Answer Message (Answer Message (ANM)) and Release (REL) message And the video call ring tone service server 120 (S363), releases the connection with the video call ring tone service server 120, and then connects the called terminal 160 and the calling terminal (S365).

Meanwhile, the called terminal 160 transmits video and audio codec information related to video call data to the video gateway 170 through the second H.324M negotiation process (S370).

Thereafter, the video gateway 170 converts the video call data transmitted / received between the called terminal 160 and the BcN terminal 190 based on the video and audio codec information received during the second H.324M negotiation process, and then the called terminal ( In operation S363, a video call between the 160 and the BcN terminal 190 is provided.

4 is a flowchart illustrating a process of processing video call ring tone content in a video gateway according to an embodiment of the present invention. Hereinafter, the video gateway ring tone content is processed in a video gateway according to an embodiment of the present invention with reference to FIG. Explain the process.

First, when the video gateway 170 receives a video call request from the BcN terminal 190 of the BcN network with the terminating terminal 160 (S410), the video gateway 170 passes through the mobile communication switch 110 of the WCDMA network to the terminating terminal 160. Request a video call connection (S420).

Subsequently, the video gateway 170 confirms the video call ring tone content information through the first H.324M negotiation with the video call ring tone service server 120. Here, the video call ring tone content information is information about an audio codec, a video codec, etc. necessary to reproduce the video call ring tone content.

Subsequently, the video gateway 170 receives the video call ring tone content from the video call ring tone service server 120 through the mobile communication switch 110 (S440), and uses the received video call ring tone content in the BcN network. Convert to a packet (S450).

Subsequently, the video gateway 170 transmits the video call connection content converted into the RTP packet to the BcN terminal 190 through the BcN network (S460).

The embodiments of the present invention described above are not implemented only through the apparatus and the method, but may be implemented through a program for realizing a function corresponding to the configuration of the embodiment of the present invention or a recording medium on which the program is recorded. Implementation may be easily implemented by those skilled in the art from the description of the above-described embodiments.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

As described above, according to the present invention, by converting the protocol and the media for the video telephony service between the WCDMA network and the BcN network between heterogeneous networks through a video gateway in real time, it is possible to provide a video call connection sound between wired and wireless networks. have.

Claims (10)

In a system for providing a video call ring tone in a mobile communication network, A video call ring tone content provider storing the video call ring tone content; A video call ring tone service server for providing video call ring tone content of the video call ring tone content provider to a calling terminal waiting to be connected to a video call with a called terminal; A mobile communication exchange requesting a video call to the called terminal upon request of a video call to the called terminal, requesting a video call ring tone service to the video call ring tone service server, and receiving the video call ring tone content; A video gateway converting the video call connection sound content provided by the mobile communication switch to the calling terminal existing in the wired network so as to be serviceable in the wired network; And A wired network switch for transmitting the video call connection sound content converted by the video gateway to the calling terminal. Video call connection sound providing system comprising a. The method of claim 1, The wired network is System for providing a video call connection sound, characterized in that the wired broadband convergence network (BcN). The method of claim 2, The mobile communication exchange And a video codec negotiation request message is transmitted to the video gateway in order to connect a video call channel for providing a video call connection service until a response to the video call request is received from the called terminal. The method of claim 3, wherein The video call back tone service server And providing a video codec and information on a video codec used to provide the video call ring tone content through the mobile communication switch to the video gateway to perform a video codec negotiation. The method of claim 1, The video gateway is A SIP proxy server that processes SIP protocol messages transmitted and received from the calling terminal subscribed to the wired network; A Signaling Gateway (SG) server that processes an Internet Services Digital Network User Part (ISP) message transmitted and received from the mobile communication switch; A media gateway (MG) server responsible for mutual conversion between messages received through the SIP proxy server and the signaling gateway server; And Video gateway management server to manage the operation and failure of the video gateway Video call connection sound providing system comprising a. In the method for providing a video call ring tone in a mobile communication network, a) receiving a video call from a wired network to a calling terminal; b) requesting a connection for a video call to a called terminal located in a wireless network; c) receiving video call ring tone content information through negotiation with a video call ring tone service server; And d) converting the video call ring tone content received from the video call ring tone service server to the wired network using the video call ring tone content information, and transmitting the converted video call ring tone content to a calling terminal. Video call connection sound providing method comprising a. The method of claim 6, In step b) above And the video call ring tone content information is information on a video codec and a video codec used to provide the video call ring tone content. The method of claim 7, wherein In step d) And the video call ring tone content is changed into an RTP packet based on the video codec and the video codec. The method according to any one of claims 6 to 8, The wireless network is a WCDMA (Wideband Code Division Multiple Access) network, and the wired network is a wired broadband convergence network (BcN: Broadband Convergence Network) providing method. The method of claim 6, After step d) Disconnecting the call ring tone service server and connecting the called terminal and the calling terminal when the video call is connected with the called terminal; Receiving codec information about a video codec and an audio codec related to video call data through negotiation with the called terminal; And Converting the video call data received from the called terminal to the wired network using the received codec information and transmitting the converted video call data to a calling terminal. Video call connection sound providing method comprising a.

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