KR20100011248A - Apparatus for providing image ring back tone on ip multimedia service network and method thereof - Google Patents

Abstract

PURPOSE: An apparatus for providing an image ring back tone on an ip multimedia service network and a method thereof are provided to supply a clearer and cleaner image ring back tone screen. CONSTITUTION: An originating side S-CSCF transmits an INVITE message to a receiving side S-CSCF(S140). The receiving side S-CSCF transmits a 100 trying message to the originating side S-CSCF(S150). An INVITE message is transmitted to a service control server through an SCIM server(S170). A service providing server transmits a 100 trying message to the receiving side S-CSCF(S180). Session setting is completed between an originating terminal and the service providing server. The service providing server provides an image ring back tone by transmitting image data for an image ring back tone to the originating terminal through an RTP(S250).

Description

Apparatus for providing image ring back tone on IP multimedia service network and method

The present invention relates to a device for providing a video ring back tone, and more particularly, to an apparatus and method for providing a video ring back tone to an originating terminal in an IP multimedia service network.

Recently, a ringback tone service provided to a calling terminal has been attempted to provide various multimedia data to the calling terminal as well as a service for outputting music instead of an electrical ringtone as a sound source ringback tone.

On the other hand, in response to the rapid development of mobile communication and Internet technology and various demands of subscribers, the recent mobile communication service is a high-speed packet data capable of transmitting a large amount of video files as well as an e-mail or image file to a mobile terminal as well as a conventional voice call service. Can provide services. Accordingly, the mobile communication system is evolving from voice based CS (Circuit Switched) domain to packet based PS (Packet Switched) domain, and further evolved into IP based core network. A communication system that provides IP multimedia services to subscribers through an IP-based core network is called IP Multimedia Service (hereinafter referred to as "IMS"), and 3GPP (Third Generation Partnership Project) provides all IP services through IMS. Various researches are underway to provide.

IMS consists of a collection of signaling and bearers associated with the network elements and must have access to voice, video, message data and web-based technologies for wireless subscribers. In addition, IMS provides various types of packet data services based on the IP transport protocol, so that IMS users can exchange multimedia-type contents such as pictures, video clips, and sound clips through session-based messages.

Therefore, there is a need for a service that can be provided to a calling terminal based on the above-described IMS network for various ringback tone services provided in a conventional code division multiple access (CDMA) network or a wideband CDMA (WCDMA) network. .

Basically, in CDMA network or WCDMA network, there is a limit to transfer clear video ringback tone screen with bandwidth limitation of 64Kbps. However, IMS network is ALL-IP network and bandwidth limitation is different from existing CDMA network or WCDMA network. Therefore, it is possible to provide high speed data transmission and provide clear video ringback tone screen, so video ringback tone service is required in IMS network.

Accordingly, an object of the present invention is to provide an apparatus and method for providing a video ring back tone to an originating terminal in an IMS network.

In order to achieve the above object, a video ringback tone providing method according to one aspect of the present invention is provided.

A method for providing a video ringback tone in an IP-based network, the method comprising: a) a control unit performing a call session control operation belonging to the IP-based network when a SIP (Session Initiation Protocol) based video call request is received from an originating terminal; Evaluating a usage condition of an application server of a terminal subscriber and transmitting the video call request to a service providing server; b) establishing, by the service providing server, a session with the calling terminal through the control unit; And c) providing a video ring back tone to the calling terminal through the control unit, with the video preset by the subscriber of the calling terminal or the subscriber of the called terminal.

Image ring back tone providing apparatus according to another aspect of the present invention,

An apparatus for providing a video ringback tone in an IP-based network, comprising: a subscriber server storing subscriber information and providing routing information for the called terminal; A control unit for performing SIP-based session control on a calling terminal and a called terminal through a wireless network using the subscriber server; And a service providing server accessing the control unit and providing a video Langback tone to the calling terminal, wherein the control unit is based on the evaluation of the use condition of the application server of the terminal subscriber when there is a video call request from the calling terminal. And establishing a session between the service providing server and the calling terminal, which are routed through the service providing server, so as to provide a video ring back tone from the service providing server to the calling terminal.

According to the present invention, a video ringback tone can be provided to an originating terminal in an IMS network.

Therefore, it is possible to increase the sales through the video ringback tone service in the IMS network.

In addition, it is possible to provide a clearer and clearer image ringback tone screen than the image ringback tone service through the existing network.

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 in order to clearly describe the present invention, 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.

In the present specification, a terminal (Mobile Station, MS) is a terminal (Mobile Terminal, Mobile Terminal (MT)), Subscriber Station (SS), Portable Subscriber Station (PSS), User Equipment (User Equipment) It may also refer to a user equipment (UE), an access terminal (AT), and the like, and may include all or some functions of a mobile terminal, a subscriber station, a portable subscriber station, a user device, and the like.

In an embodiment of the present invention, a method for providing a video ringback tone to a calling party includes a method of providing a video ringback tone to a calling party and a video ringback tone to a calling party. There is a method to provide, and it will be described based on these two methods.

1 is a schematic diagram of a network providing image ring back tone in an IMS network according to an embodiment of the present invention.

As shown in FIG. 1, a network diagram according to an embodiment of the present invention includes a wireless network 300, a packet data network 400, an IMS core network 500, and a service providing server 600.

The wireless network 300 is a network that allows the terminals 100 and 200 to be connected to the IMS core network 500 through the packet data network 400, and a wireless network 300 of various methods may be employed. For example, in the case of a CDMA network, a base station (BTS) and a base station controller (BSC) may be used as the wireless network 300, and in the case of a WCDMA network, a radio network controller (RNC) and a node B may be used.

The packet data network 400 is a network that allows terminals 100 and 200 connected through the wireless network 300 to enable data communication through the IMS core network 500. The packet data network 400 is located at the end of the wireless network 300. .

The IMS core network 500 performs call control and session management using the SIP / SDP protocol provided by the Internet Engineering Task Force (IETF). The IMS core network 500 is connected to the packet data network 400 to provide IP multimedia data communication services to the terminals 100 and 200.

The service providing server 600 stores the image provided by the subscribers of the terminals 100 and 200 to provide the image ring back tone, and is connected to the IMS core network 500 and the packet data network 400 to connect the terminal 100. , 200) provides video ringback tone service.

Here, the IMS core network 500 is a call session control function (hereinafter referred to as "CSCF") 510 and 520, which is in charge of service control and provides service resource information to a user. A server (Home Subscriber, hereinafter referred to as "HSS") 530 and a Scheme (SCIM) server 540.

The CSCFs 510 and 520 perform basic functions for session control based on the Session Initiation Protocol (SIP), such as subscriber registration, authentication, service triggering, routing, various call control, and address processing. .

Since the CSCFs 510 and 520 perform different functions depending on the network in which the subscriber is located, P-CSCF (Proxy-CSCF) 510, which is a proxy call session control function, based on its location and role, services A call session control function may be classified into an S-CSCF (Serving-CSCF) 520 and an inquiry call session control function I-CSCF (Interrogating-CSCF) (not shown).

The P-CSCF 510 is a point where terminals 100 and 200 first meet when connecting to the IMS core network 500. The P-CSCF 510 requests or responds to a SIP message with the terminals 100 and 200. FIG. And, referring to the home domain of the SIP message received from the terminal (100, 200) and forwards to the S-CSCF (520) or I-SCSF (not shown).

The S-CSCF 520 performs session state management and control services of the terminals 100 and 200 that are actually registered, and provides information related to service resources to the terminals 100 and 200. Subscriber information is received in conjunction with the HSS (530), and provides services such as application server interworking function through the initial filtering criteria (IFC). Here, the initial filtration criteria describe the conditions of use of the application server of the subscribers (100, 200).

The I-CSCF (not shown) serves as a contact point for all incoming calls to connect to subscribers in the IMS core network 500 and as a contact point with other network subscribers roaming in the network.

In the embodiment of the present invention, only the P-CSCF 510 and the S-CSCF 520 will be described for the sake of brevity.

The HSS 530 stores subscriber information and service profiles, and integrates mobility management and authentication of IMS users with a Home Location Register (HLR) of an existing mobile communication network.

The SCIM server 540 is a broker that manages interactions between other application servers. Accordingly, messages transmitted and received between the S-CSCF 520 and the service providing server 600 may be relayed and managed.

Meanwhile, the terminals 100 and 200 used in the embodiment of the present invention are communication terminals that can use IP multimedia data communication through the IMS core network 600, for example, a mobile phone and a personal digital assistant (PDA). And various digital electronic devices such as computers.

FIG. 2 is a detailed block diagram of the service providing server 600 shown in FIG. 1.

As shown in FIG. 2, the service providing server 600 includes a session processor 610, a service processor 620, a data converter 630, a data transmitter 640, and a database (DB, 650). .

The session processor 610 manages a SIP session by processing a 3GPP IMS standard SIP signal. Accordingly, the session processor 610 is connected to the IMS core network 500 through the SCIM server 540 to receive a message INVITE from the terminals 100 and 200 to establish a session connection.

The service processor 620 performs and manages a service to be performed after the session is established and after the call connection is completed. That is, the service processor 620 processes the video ringback tone service for the calling terminal when the session connection with the calling terminal is established through the session processing unit 610.

The data converter 630 is controlled by the service processor 620 and performs data conversion such as codec conversion of an audio / video stored in the DB 560 and image size adjustment.

The data transmitter 640 is controlled by the service processor 620, and transmits the data converted by the data converter 630 as an image ring back tone to the calling terminal. At this time, the data transmission unit 640 transmits the video stream to the calling terminal using the Real-Time Transport Protocol (RTP) through the session set by the session processing unit 610 to provide a video ringback tone service.

The DB 650 stores various data necessary for the service providing server 600 to provide a video ringback tone service. In particular, DB 650 stores video data (which may include audio data) to be provided as video ringback tones to the calling terminal. Such image data may be stored by being delivered from the calling subscriber or received from the called subscriber.

Hereinafter, with reference to FIG. 3, a first embodiment of the present invention for providing an image set by a called subscriber in an IMS network as a video ring back tone will be described.

In the method for providing a video ringback tone in the IMS network according to the first embodiment of the present invention, the terminal 100 illustrated in FIG. 1 is a calling terminal requesting a video call, and the terminal 200 is connected to the calling terminal 100. It is assumed that it is a called terminal receiving a video call request. In addition, it is assumed that the calling terminal 100 and the called terminal 200 have already completed the registration procedure in the IMS core network 500 to perform IP multimedia data communication such as a video call. Then, the calling terminal 100 and the called terminal 200 receive a service through different CSCFs, and the calling terminal 100 receives a service through the calling P-CSCF 510 and the calling S-CSCF 520. The receiving terminal 200 will be described on the assumption that the receiving terminal P-CSCF 510 'and the receiving S-CSCF 520' are provided with the service. In addition, it is assumed that the service providing server 600 stores an image preset by a called subscriber who is a user of the called terminal 100.

First, the calling terminal 100 transmits a connection request message to the calling S-CSCF 520 through the calling P-CSCF 510 for a video call with the called terminal 200 (S100). This connection request message uses the INVITE method.

The originating S-CSCF 520 receiving the INVITE message transmitted from the originating terminal 100 transmits the 100 Trying message to the originating terminal 100 through the originating P-CSCF 510 (S110).

Thereafter, the calling party S-CSCF 520 transmits a location information request (LIR) message, which is a location information request message, to the HSS 530 to find a CSCF registered by the called terminal 200 (S120). A location information answer (LIA) message, which is a location information response message including the location information of the called party S-CSCF 520 ', is received from step 530 (S130).

The calling S-CSCF 520 transmits an INVITE message to the called S-CSCF 520 'using the location information received by the HSS 530 (S140).

Thereafter, the called party S-CSCF 520 'transmits 100 Trying messages to the calling party S-CSCF 520 (S150), and then evaluates the initial filter criterion iFC (initial filter criteria) (S160). Accordingly, the INVITE message is transmitted to the service control server 600 through the SCIM server 540 (S170). Here, when the terminating terminal 200 registers a location through the terminating S-CSCF 520 ′, the terminating terminal 200 routes to the service providing server 600 to provide a video ring back tone for the video call that is received by the terminating terminal 200. Since it is registered in iFC, the called party S-CSCF 520 ′ may route the INVITE message transmitted from the calling party S-CSCF 520 to the service providing server 600.

Next, the service providing server 600 transmits a 100 Trying message to the called party's S-CSCF 520 'through the SCIM server 540 in order to provide the video ringback tone with the video preset by the called party (see FIG. S180).

Thereafter, the service providing server 600 transmits a 180 Ringing message, which is a response indicating that the INVITE message has been received, and a 200 OK message indicating the acceptance of the video call to the called party S-CSCF 520 'through the SCIM server 540. (S190, S200), at the same time, the INVITE message for the call connection with the destination terminal 200 via the SCIM server 540, the destination S-CSCF (520 ') and the destination P-CSCF (510') called terminal ( 200) (S210). Accordingly, the called terminal 200 transmits the 100 Trying message, which is a response to the INVITE message from the service providing server 600, to the called P-CSCF 510 ', the called S-CSCF 520', and the SCIM server 540. Through the transmission to the service providing server 600 (S220).

Meanwhile, the called party S-CSCF 520 'transmits the 180 ringing message and the 200 OK message transmitted from the service providing server 600 through the calling party S-CSCF 520 and the calling party P-CSCF 510. By transmitting to (100) (S230, S240), the session setup through the IMS core network 500 is completed between the originating terminal 100 and the service providing server 600.

As such, when the session setup is completed between the calling terminal 100 and the service providing server 600, the service providing server 600 is a DB of the service providing server 600 in advance. The video data for the video ringback tone stored in operation 650 is transmitted to the calling terminal 100 through the RTP to provide the video ringback tone (S250).

Thereafter, the 180 ringing message and the 200 OK message, which are response messages to the INVITE message transmitted to the called terminal 200, are received from the called terminal 200 by the called P-CSCF 510 'and the called S-CSCF 520'. And when received to the service providing server 600 through the SCIM server 540 (S260, S270), the session setup through the IMS core network 500 is completed between the service providing server 600 and the destination terminal 200 do.

As such, when the session setting is completed between the service providing server 600 and the called terminal 200, the service providing server 600 stops the video ringback tone transmitted to the calling terminal 100, and the calling terminal 100. And the receiving terminal 200 transfers the transmitted video in the middle so that the video call through the IMS core network 500 (S280, S290).

As described above, the service providing server 600 may set the video set by the called subscriber through the IMS core network 500 to the video ringback tone and provide the video to the calling terminal 100.

Next, a second embodiment of the present invention for providing an image set by the calling subscriber in the IMS network as an image ring back tone will be described with reference to FIG. 4.

In the second embodiment of the present invention, as in the first embodiment, it is assumed that the calling terminal 100 and the called terminal 200 are already present, and the calling terminal 100 and the called terminal 200 are already in the IMS core network 500. In this case, it is assumed that the IP multimedia data communication such as a video call is completed by completing the registration procedure. Then, the calling terminal 100 and the called terminal 200 receive a service through different CSCFs, and the calling terminal 100 receives a service through the calling P-CSCF 510 and the calling S-CSCF 520. The receiving terminal 200 is assumed to be provided with a service through the called party P-CSCF 510 'and the called party S-CSCF 520'. However, unlike the first embodiment, in the second embodiment, it is assumed that the preset image is stored in the service providing server 600 by the calling subscriber which is the user of the calling terminal 100.

First, the calling terminal 100 transmits a connection request message to the calling S-CSCF 520 through the calling P-CSCF 510 for a video call with the called terminal 200 (S300). This connection request message uses the INVITE method.

The originating S-CSCF 520 receiving the INVITE message transmitted from the originating terminal 100 transmits the 100 Trying message to the originating terminal 100 through the originating P-CSCF 510 (S310).

Thereafter, the originating S-CSCF 520 evaluates an initial filter criterion iFC (initial filter criteria) (S320), and transmits an INVITE message through the SCIM server 540 according to the evaluation result of the service control server 600. Transmit to (S330). Here, when the calling terminal 100 registers a location through the calling S-CSCF 520, it routes to the service providing server 600 to provide a video ringback tone for the video call originating from the calling terminal 100. Since it is registered in the iFC, the calling party S-CSCF 520 may route the INVITE message transported from the calling terminal 100 to the service providing server 600.

Next, the service providing server 600 transmits a 100 Trying message to the calling party's S-CSCF 520 through the SCIM server 540 in order to provide a video ringback tone with the video preset by the calling subscriber (S340). ).

Thereafter, the service providing server 600 transmits a 180 Ringing message, which is a response indicating that the INVITE message has been received, and a 200 OK message indicating the acceptance of the video call to the calling party S-CSCF 520 through the SCIM server 540 ( S350, S360, and the calling party S-CSCF 520 transmits the 180 ringing message and the 200 OK message transmitted from the service providing server 600 to the calling terminal 100 through the calling party P-CSCF 510 ( S370 and S380, session establishment through the IMS core network 500 is completed between the originating terminal 100 and the service providing server 600.

As such, when the session setup between the calling terminal 100 and the service providing server 600 is completed, the service providing server 600 is a DB of the service providing server 600 in advance. In operation 390, the image data for the image ring back tone stored and transmitted to the calling terminal 100 is transmitted to the calling terminal 100 through the RTP to provide the image ring back tone (S390).

Meanwhile, at the same time as performing the steps S350 and S360, the service providing server 600 requests the location information request message to the HSS 530 to find the CSCF registered by the destination terminal 200 in order to proceed with the incoming call processing. After transmitting the LIR message (S400), and receives the LIA message which is a location information response message including the location information of the called party S-CSCF (520 ') from the HSS (530) (S410).

Thereafter, the service providing server 600 uses the location information received from the HSS 530 through the SCIM server 540, the called party S-CSCF 520 ', and the called party P-CSCF 510'. The INVITE message is transmitted to the terminal 200 (S420 and S430). Accordingly, the called terminal 200 transmits the 100 Trying message, which is a response to the INVITE message from the service providing server 600, to the called P-CSCF 510 ', the called S-CSCF 520', and the SCIM server 540. S) and transmits to the service providing server 600 (S440, S450).

At this time, the service providing server 600 continues to provide the video ringback tone to the calling terminal 100 while the call to the called terminal 200 is in progress.

Thereafter, the 180 ringing message and the 200 OK message, which are response messages to the INVITE message transmitted to the called terminal 200, are received from the called terminal 200 by the called P-CSCF 510 'and the called S-CSCF 520'. And when received to the service providing server 600 through the SCIM server 540 (S460, S470, S480, S490), between the service providing server 600 and the destination terminal 200 through the IMS core network 500 The session setup is complete.

As such, when the session setting is completed between the service providing server 600 and the called terminal 200, the service providing server 600 stops the video ringback tone transmitted to the calling terminal 100, and the calling terminal 100. And the destination terminal 200 transfers the transmitted video in the middle so that the video call through the IMS core network 500 (S500, S510).

As described above, the service providing server 600 may set the image set by the calling subscriber through the IMS core network 500 to the video ringback tone and provide it to the calling terminal 100.

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.

1 is a schematic diagram of a network providing image ring back tone in an IMS network according to an embodiment of the present invention.

FIG. 2 is a detailed block diagram of the service providing server shown in FIG. 1.

3 is a flowchart illustrating a method for providing an image set by a called subscriber in an image ring back tone in an IMS network according to a first embodiment of the present invention.

4 is a flowchart illustrating a method for providing a video ringback tone with an image set by an originating subscriber in an IMS network according to a second embodiment of the present invention.

Claims (20)

A method for providing a video ring back tone in an IP based network, a) When a SIP (Session Initiation Protocol) based video call request is received from an originating terminal, a control unit performing a call session control operation belonging to the IP-based network evaluates a usage condition of an application server of a terminal subscriber. Transmitting a video call request to a service providing server; b) establishing, by the service providing server, a session with the calling terminal through the control unit; And c) providing a video ring back tone to the calling terminal through the control unit by preset video set by the subscriber of the calling terminal or the subscriber of the called terminal; Image ring back tone providing method comprising a. The method of claim 1, Step a) is a-i) receiving a video call request from the calling terminal by a controller of the calling party connected to the calling terminal; a-ii) finding, by the calling party's control unit, location information of the called party's controller registered by the called terminal through a server storing routing information about the terminal; a-iii) transmitting the video call request to the controller of the called party through the location information by the controller of the calling party; And a-iv) the control unit of the called party transmitting the video call request to the service control server based on the evaluation result of the usage condition; Image ring back tone providing method comprising a. The method of claim 2, In step b), And the service providing server transmits a response to the video call request to the calling terminal through the controlling part of the called party and the calling party controlling part, and establishes a session with the calling terminal. The method of claim 2, Step a-iv), Evaluating, by the controller at the called side, the use condition; A control unit of the called party confirming that the video call request is registered to route to the service providing server for providing a video ringback tone to the calling terminal based on the evaluation of the usage condition; And Transmitting the video call request to the service providing server by the controller of the called party; Image ring back tone providing method comprising a. The method of claim 2, The control unit of the called party registers the usage condition to route the video call request to the service providing server to provide a video ringback tone for the video call request received by the called terminal when the called terminal registers its location. Video ringback tone providing method characterized in that. The method of claim 5, In step b), The service providing server transmits the video call request to the called terminal through the control unit of the called party, After step c), When the response to the video call request is received from the called terminal, establishing a session with the called terminal by a control unit of the called party; Stopping, by the service providing server, providing a video ring back tone to the calling terminal; And Mediating, by the service providing server, a video call between the calling terminal and the called terminal through a controller of the calling party and a controller of the called party; Image ring back tone providing method further comprising. The method of claim 1, Step a) is a-i) receiving a video call request from the calling terminal by a controller of the calling party connected to the calling terminal; And a-ii) transmitting the video call request to the service control server based on a result of evaluating the use condition by the controller of the calling party; Image ring back tone providing method comprising a. The method of claim 7, wherein Step a-ii), Evaluating, by the controller of the calling party, the conditions of use; Confirming, by the control unit of the calling party, that the video call request is registered to route to the service providing server for providing a video ringback tone to the calling terminal based on the evaluation of the usage condition; And Transmitting, by the controller of the calling party, the video call request to the service providing server; Image ring back tone providing method comprising a. The method of claim 7, wherein The control unit of the calling party registers the usage condition to route the video call request to the service providing server to provide a video ringback tone for a video call request originating from the calling terminal when the calling terminal registers its location. Video ringback tone providing method characterized in that. The method of claim 7, wherein B), b-i) finding, by the service providing server, location information of a controller of a called party registered by the called terminal through a server storing routing information about the terminal; b-iii) the service providing server transmitting the video call request to the controller of the called party through the location information; And b-iii) transmitting the video call request to the called terminal by the controller of the called party; Image ring back tone providing method comprising a. The method of claim 10, After step c), When the response to the video call request is received from the called terminal, establishing a session with the called terminal by a control unit of the called party; Stopping, by the service providing server, providing a video ring back tone to the calling terminal; And Mediating, by the service providing server, a video call between the calling terminal and the called terminal through a controller of the calling party and a controller of the called party; Image ring back tone providing method further comprising. The method according to any one of claims 1 to 10, The IP based network is an IP multimedia service network, The control unit is a call session control function in the IP multimedia service network, The conditions of use are the initial filter criteria (Initial Filter Criteria) Image ring back tone providing method, characterized in that. An apparatus for providing a video ring back tone in an IP based network, A subscriber server storing subscriber information and providing routing information for the called terminal; A control unit for performing SIP-based session control on a calling terminal and a called terminal through a wireless network using the subscriber server; And A service providing server which accesses the controller and provides an image Langback tone for the calling terminal. Including; The controller, when there is a video call request from the calling terminal, establishes a session between the service providing server and the calling terminal, which is routed based on the evaluation of the use condition of the application server of the terminal subscriber, from the service providing server. Controlling to provide video ringback tone to terminal Image ring back tone providing apparatus, characterized in that. The method of claim 13, The service providing server, A session processor configured to establish a session with the calling terminal and the called terminal through the controller; A database (DB) storing an image for providing an image ring back tone for the calling terminal; A data converter for converting image data stored in the database; A data transmitter for transmitting the image data converted by the data converter to the calling terminal; And After establishing a session with the originating terminal that sent the video call request through the IP-based network, the service processing unit for providing the image stored in the database to the originating terminal as a video ring back tone through the data transmission unit Image ring back tone providing apparatus comprising a. The method of claim 14, And image data stored in the database is preset by a subscriber of the calling terminal or a subscriber of the called terminal. The method of claim 14, And the data transmitter transmits a video ringback tone to the calling terminal by using a Real-Time Transport Protocol (RTP) through a session established with the calling terminal by the session processor. The method of claim 13, The control unit registers the usage condition to route the video call request to the service providing server to provide a video ringback tone for a video call request received by the called terminal when the called terminal registers its location. Video ringback tone providing device. The method of claim 13, The control unit registers the usage condition to route the video call request to the service providing server to provide a video ringback tone for a video call request sent from the calling terminal when the calling terminal registers its location. Video ringback tone providing device. The method of claim 14, And the service processor stops providing video ringback tones to the calling terminal and mediates a video call between the calling terminal and the called terminal when a session is established with the called terminal. The method according to any one of claims 13 to 19, The IP based network is an IP multimedia service network, The control unit is a call session control function unit, The call session control function unit, Proxy call session control function for relaying the transmission and reception of SIP messages for the calling terminal and the called terminal through the wireless network; And Connected to the proxy call session control function to perform session state management and control services of the calling terminal and the called terminal registered in the IP multimedia service network, and controlling the connection to the service providing server through the use condition; Service call session control function Image ring back tone providing apparatus comprising a.

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