KR100715597B1 - Method of serving multimedia calling party information in SIP-based packet communication network and system thereof - Google Patents

Abstract

Disclosed are a method and system for multimedia caller information service in a SIP-based packet communication network providing multimedia caller information during a call connection between a caller terminal according to the SIP protocol. The method comprises the steps of: a) when the first INVITE message is generated from the calling terminal, checking whether the calling terminal is a terminal subscribed to the multimedia calling information providing service; b) when the calling terminal is a terminal subscribed to the multimedia calling information providing service, checking a capability of the called terminal of the invite message; c) generating a second invite message based on the first invite message and the capabilities of the called terminal, and providing the second invite message to the called terminal; And d) providing multimedia calling information of the calling terminal to the called terminal according to a response from the called terminal to the second invite message.

Description

Method and system of multimedia caller information service in SIP based packet communication network TECHNICAL FIELD

1 is a block diagram illustrating a multimedia origination information service system in a SIP-based packet network according to the present invention.

FIG. 2 is a signal flowchart illustrating an example of a process of providing multimedia call information according to a push method in the system shown in FIG. 1.

3 is a signal flowchart illustrating an example of a process of providing multimedia call information according to a pull method in the system shown in FIG. 1.

<Explanation of symbols for main parts of drawing>

100, 200: terminal 300, 301: SIP server

400: application server 500: media server

600: location server

The present invention relates to a method and system for multimedia caller information service in a SIP-based packet communication network. In particular, the present invention relates to a SIP-based packet communication network for providing multimedia caller information during a call connection between originating and receiving terminals according to the SIP protocol. A method and system for multimedia caller information service are provided.

The caller ID service is one of the caller information services that are widely used in the wired / wireless voice telephone service market. The caller ID indication service is a service provided in a circuit network, and as a result of using an existing circuit network-based signaling protocol, media provided is also limited to number (text) information.

Currently, WCDMA is used in wired circuit network for video telephony service in IMT-2000 network, and standardized to 3G-324M protocol standard by partially changing ITU-T H.324 protocol standard to 3GPP standardization organization for wireless circuit network. I use it. In addition, in the 1xEV-DO network, the SIP protocol standard used in the wired packet network is optimized for the current wireless packet network without a separate standard standard.

Therefore, in a communication environment in which multimedia services are widely used in the future, various initial media services based on various multimedia such as audio, images, and video as well as text are provided as IP caller information based on IP packet network rather than circuit network. It is expected to require ID display service, multimedia advertisements and the like.

Accordingly, the present invention has been made in view of the above circumstances, and an object of the present invention is to provide multimedia caller information to a receiving terminal during a call connection in a SIP protocol based packet communication network. A caller information service method and system are provided.

Multimedia calling information service method in a SIP-based packet communication network according to the first aspect of the present invention a) when the first INVITE message is generated from the calling terminal, the calling terminal subscribes to the multimedia calling information providing service Checking whether it is one terminal; b) when the calling terminal is a terminal subscribed to the multimedia calling information providing service, checking a capability of the called terminal of the invite message; c) generating a second invite message based on the first invite message and the capabilities of the called terminal, and providing the second invite message to the called terminal; And d) providing multimedia calling information of the calling terminal to the called terminal according to a response from the called terminal to the second invite message.

Advantageously, step d) comprises d-1) receiving a 180 ring message as a response from said called terminal; And d-2) if the 180 ring message includes the reception of the multimedia outgoing information, transmitting the multimedia outgoing information of the calling terminal to the called terminal.

Also preferably, the method further comprises e) stopping the provision of multimedia outgoing information to the called terminal when a 200 OK message is generated from the called terminal.

More preferably, the method further includes f) stopping the provision of multimedia outgoing information to the called terminal when a 200 OK message is generated from the called terminal and a media stop request message is generated from the called terminal.

Also preferably, the second invite message includes a service identifier or initial media related information, and the initial media related information includes a media type and a codec.

The second invite message may also include media location information corresponding to a storage location of the multimedia origination information. Preferably, step d) includes d-3) media location information from the called terminal. Receiving a media request message; And d-4) transmitting the multimedia outgoing information to the called terminal in response to the media request message.

Also, preferably, the multimedia origination information is generated according to a media provision condition stored in the subscriber profile, and the media provision condition is any one or more of basic media information, called party information, called party group information, and time zone information. It includes. In addition, the multimedia outgoing information is provided according to the RTP / RTCP protocol and includes one or more of text, voice, sound, image, avatar, emoticon, video, and flash animation. In addition, the multimedia outgoing information includes a repeat play request command, and when the called terminal plays the multimedia outgoing information from the beginning to the end according to the repeat play request command, it repeatedly plays.

In the SIP-based packet communication network according to the second aspect of the present invention, a method for transmitting multimedia outgoing information service includes: a) when a SIP server receives a first invite message from an originating terminal, at the SIP server; Confirming whether the mobile terminal has subscribed to the multimedia call information providing service, and routing the first invite message to an application server; b) when the first server receives the first invite message, determining the multimedia data processing capability of the called terminal of the first invite message; c) generating a second invite message at the application server based on the processing capability of the first invite message and the called terminal, and transmitting the second invite message to the SIP server; d) when the second invite message is received at the SIP server, sending the second invite message to the called terminal; e) when a 180 ringing message for the second invite message is generated from the called terminal, when the 180 ringing message includes a multimedia caller information reception confirmation identifier, Determining media to be provided to the called terminal according to media providing conditions stored in a profile of a calling terminal user, and providing a media transfer request message to a media server according to the determination; And f) transmitting, by the media server, the determined media as the multimedia sender information to the called terminal according to the media transmission request message.

Preferably, the step c) is the second invite message when it is determined in step c-1) that the terminating terminal's capability cannot process multimedia or is set to refuse to receive the multimedia call information. Providing the first invite message to the SIP server; And c-2) when the capability of the called terminal is determined as a terminal capable of processing multimedia in step b), generating the second invite message including a service identifier and initial media related information at the application server; And providing the generated second invite message to the SIP server.

More preferably, the method comprises the steps of: i) querying a location server for the location of the called terminal at the SIP server before performing step d); And j) in response to the location query of the called terminal from the SIP server, providing the location information of the called terminal to the SIP at the location server; Perform step d).

Also preferably, the method may include g) requesting the media server to stop providing the multimedia call information when the 200 OK message is generated from the called terminal; And h) stopping providing the multimedia origination information in the media server according to the request of step g).

Also, preferably, the initial media related information includes a media type and a codec, and the media providing condition includes any one or more of basic media information, called party information, called party group information, and time zone information.

Also preferably, the multimedia outgoing information is provided according to the RTP / RTCP protocol, and the multimedia outgoing information includes one or more of text, voice, sound, image, avatar, emoticon, video, and flash animation. In addition, the multimedia outgoing information includes a repeat play request command, and when the called terminal plays the multimedia outgoing information from the beginning to the end according to the repeat play request command, it repeatedly plays the same.

In the SIP-based packet communication network according to the third aspect of the present invention, a method for providing multimedia originating information may include a) when the SIP server receives a first invite message from an originating terminal, the originating terminal may receive multimedia originating information. Confirming whether the terminal subscribes to the provided service, and transmitting the first invite message to an application server; b) when the first invite message is received by the application server, the application server determines the multimedia data processing capability of the called terminal and receives the second invite message based on the multimedia data processing capability of the called terminal. Generating and sending the second invite message to the SIP server; c) when the SIP server receives the second invite message, transmitting the second invite message to the called terminal at the SIP server; And d) in response to the second invite message, when a media request message is generated from the called terminal and the media request message is received at the media server, the called terminal receives multimedia call information corresponding to the media request message. Sending to.

Preferably, the method further comprises e) stopping the provision of the multimedia outgoing information from the media server to the called terminal when a message for stopping the provision of the multimedia outgoing information from the called terminal is generated.

Also preferably, the step b) may include: receiving at the application server the first invite message according to b-1) step a); b-2) identifying, by the application server, whether the capability of the called terminal is capable of processing multimedia data; b-3) the second invite message including initial media related information corresponding to the multimedia origination information, if the determination result in step b-2 is that the called terminal has the capability to process multimedia data; Providing to the SIP server; And b-4) if the called terminal is incapable of processing multimedia data as a result of the determination in step b-2), providing the first invite message as the second invite message to the SIP server. It includes a step.

Also preferably, the initial media related information includes media type and media location information, and the media request message is generated from the called terminal based on the initial media related information.

In addition, the called terminal generates a 180 ring message before or after generating the media request message, and the multimedia originating information is generated according to the media provision condition stored in the profile of the subscriber. The media provision condition includes any one or more of basic media information, called party information, called party group information, and time zone information.

Further, the multimedia outgoing information is provided according to the RTP / RTCP protocol, and the multimedia outgoing information includes one or more of text, voice, sound, image, avatar, emoticon, video, and flash animation. In addition, the multimedia outgoing information includes a repeat play request command, and when the called terminal plays the multimedia outgoing information from the beginning to the end according to the repeat play request command, it repeatedly plays.

In the SIP-based packet communication network according to the fourth aspect of the present invention, in the SIP-based packet network, when the first invite message from the originating terminal is received, the calling terminal provides the multimedia calling information. Check whether the terminal has subscribed to the service, route the first invite message to an application server, and when receiving the second invite message from the application server, transmit the second invite message to the called terminal. SIP server for; When receiving the first invite message, grasp the multimedia data processing capability of the called terminal of the first invite message, and based on the multimedia data processing capability of the called terminal and the first invite message; Generate an invite message, provide the second invite message to the SIP server, receive a response to the second invite message from the terminating terminal, and receive a multimedia sender information receipt acknowledgment identifier to the response; When included, the application server for determining the media to be provided to the destination terminal according to the media provision conditions stored in the profile of the calling terminal user, the application server for providing a media transfer request message to the media server according to the determination; And when receiving the media transmission request message, the media server for transmitting the multimedia caller information to the called terminal according to the media transmission request message.

When the 200 OK message is generated from the called terminal, the application server generates a predetermined caller information stop request message and provides the generated caller information stop request message to the media server. The multimedia caller information is stopped from being provided to the called terminal according to the caller information interruption request message.

Preferably, the application server generates the first invite message as the second invite message when the multimedia processing capability of the called terminal is unprocessable or unsubscribe, and the multimedia processing capability of the called terminal is multimedia. If so, generate the second invite message including a service identifier and initial media related information.

In addition, the initial media related information includes a media type and a codec, and the media provision condition includes any one or more of basic media information, called party information, called party group information, and time zone information.

Further, the multimedia outgoing information is provided according to the RTP / RTCP protocol, and the multimedia outgoing information includes one or more of text, voice, sound, image, avatar, emoticon, video, and flash animation. Preferably, the multimedia outgoing information includes a repeat play request command, and when the called terminal plays the multimedia outgoing information from the beginning to the end according to the repeat play request command, the multimedia play information is repeatedly played.

Also preferably, when the 200 OK message is generated from the called terminal, the application server requests the media server to stop providing the multimedia outgoing information, and the media server sends the call to the called terminal according to the stopping request. Stop providing multimedia calling information.

In the SIP-based packet communication network, the multimedia outgoing information service system according to the fifth aspect of the present invention, in the SIP-based packet network, receives a first invite message from an originating terminal at a SIP server. The second invite message is checked if the terminal subscribes to the multimedia origination information providing service, routes the first invite message to an application server, and receives a second invite message from the application server. SIP server for transmitting to the destination terminal; When receiving the first invite message from the SIP server, grasp the multimedia data processing capability of the called terminal, and based on the identified multimedia data processing capability of the called terminal and the first invite message; The application server for generating an invite message; And a media server for transmitting multimedia origination information corresponding to the media request message to the called terminal when receiving a media request message from the called terminal as a response from the called terminal to the second invite message. It includes.

Here, the called terminal generates a 180 ring message before or after or simultaneously with generating the media request message.

Preferably, the SIP server inquires a location server of the location of the destination terminal to obtain location information of the destination terminal, and in response to the query, the SIP server according to the location information of the destination terminal from the location server. A two-byte message is sent to the called terminal.

Preferably, the application server generates a second invite message including initial media related information corresponding to the multimedia outgoing information when the determination result indicates that the called terminal has the ability to process multimedia data. If the result of the determination indicates that the called terminal does not have the capability to process the multimedia data, the first invite message is generated as the second invite message.

Further, the initial media related information includes media type and media location information, and the media request message is generated from the called terminal based on the initial media related information.

Preferably, the multimedia originating information is generated according to a media providing condition stored in a profile of the calling terminal, and the media providing condition is one or more of basic media information, called party information, called party group information, and time zone information. It includes. In addition, the multimedia origination information is provided according to the RTP / RTCP protocol.

Preferably, the multimedia outgoing information includes one or more of text, voice, sound, image, avatar, emoticon, video, and flash animation. Also, preferably, the multimedia outgoing information includes a repeat play request command, and when the called terminal plays the multimedia outgoing information from the beginning to the end according to the repeat play request command, the multimedia play information is repeatedly played.                         

Preferably, when the media server receives the request to stop providing multimedia call information from the called terminal, the media server stops providing multimedia call information to the called terminal, and the request to stop providing multimedia call information is RTP / RTCP. It is provided according to the protocol.

According to the present invention, in the SIP protocol based packet communication network, multimedia caller information can be provided to the called terminal during a call connection between the calling terminal and the called terminal.

Hereinafter, the present invention will be described in more detail with reference to the following examples.

1 is a block diagram illustrating a multimedia origination information service system in a SIP-based packet communication network according to the present invention.

FIG. 2 is a signal flowchart illustrating an example of a process of providing multimedia call information according to a push method in the system shown in FIG. 1.

3 is a signal flowchart illustrating an example of a process of providing multimedia call information according to a pull method in the system shown in FIG. 1.

First embodiment

Referring to FIG. 1, a multimedia call information service system in a SIP-based packet network according to a first embodiment of the present invention may include at least one SIP server 300, 301, an application server 400, and a media server 500. It includes.

Multimedia outgoing information service system according to the present invention may include one or more SIP servers, but in the present embodiment described with one SIP server (300, 301), two SIP servers as needed to help understanding It describes with (300, 301). However, it will be understood by those skilled in the art that the present invention is not limited by the number of SIP servers 300.

The SIP server 300 has a function defined in the SIP protocol. In addition, the SIP server 300 manages registration information and service profile information of a terminal registered according to the present invention. When the SIP server 300 receives the first setup message from the calling terminal 100 according to the present invention, the calling terminal 100 transmits multimedia outgoing information based on the service profile of the calling terminal. It is confirmed that the terminal subscribed to the provision service, and according to the present invention routes the first invite message to the application server 400.

When the application server 400 receives the first invite message from the SIP servers 300 and 301, the application server 400 confirms whether the calling terminal 100 subscribes to the multimedia calling information service. In addition, the application server 400 grasps the multimedia data processing capability of the called terminal 200 of the first invite message, and based on the multimedia data processing capability of the called terminal and the first invite message, Generates an invite message and provides the second invite message to the SIP server 300. When the second invite message is received at the SIP server 300, the SIP server 300 transmits the second invite message to the called terminal. According to an embodiment of the present disclosure, when the SIP server 300 receives the second invite message, the SIP server 300 inquires the location server 600 of the location of the called terminal 200 and receives the location server 600 from the location server 600. The second invite message is transmitted to the called terminal 200 according to the location information. Although the process of sending the invite message to the called terminal for the call varies, such a process is well known to those skilled in the art, and a detailed description thereof will be omitted. However, it will be understood by those skilled in the art that the present invention is not limited by the above-described byte transfer process.

In addition, the application server 400 receives a response to the second invite message from the called terminal 200, and when the multimedia sender information reception confirmation identifier is included in the response, the calling terminal 100 Determine media to be provided to the called terminal according to the media provision condition stored in the user's profile, and provide a media transfer request message to the media server 500 according to the determination.

When the media server 500 receives the media transmission request message from the application server 400, the media server 500 transmits the multimedia transmission information to the called terminal 200 according to the media transmission request message.

The application server 400 generates the first invite message as the second invite message when the multimedia processing capability of the called terminal 200 is unprocessable or unsubscribed according to a preferred embodiment. When the multimedia processing capability of the terminal 200 is capable of multimedia processing, an invite message including a service identifier and initial media related information is generated as the second invite message.

Preferably, the response is a 180 Ringing message that includes the multimedia sender information receivable acknowledgment identifier. In addition, the initial media related information includes a media type and a codec. The media provision condition includes any one or more of basic media information, called party information, called party group information, and time zone information.

Also preferably, the multimedia outgoing information is provided to the called terminal 200 according to the RTP / RTCP protocol.

The multimedia outgoing information according to the present invention may include one or more of text, voice, sound, image, avatar, emoticon, video, and flash animation, and the multimedia outgoing information may include a repeat play request command. Therefore, when the called terminal 200 reproduces the multimedia transmission information from the beginning to the end according to the repetitive reproduction request command, the terminating terminal 200 repeatedly reproduces it.

In addition, when a 200 OK message is generated from the called terminal 200, the application server 400 requests the media server 500 to stop providing the multimedia call information, and the media server 500 stops the stop. Providing the multimedia outgoing information to the called terminal 200 is stopped according to the request.

Hereinafter, with reference to the accompanying drawings will be described in detail a first embodiment of the present invention.

In order to help understanding, the present embodiment will be described assuming that the calling / calling terminals 100 and 200 are registered in the first SIP server 300 and the second SIP server 301, respectively. However, those skilled in the art will understand that there is no difference in its main operation even when both the originating and terminating terminals 100 and 200 are registered in a single SIP server.

Referring to FIG. 2, when the calling terminal 100 transmits a first invite message to the first SIP server 300 for a call with the called terminal 200 and requests a call setup, the first SIP The server 300 manages registration information and service profile information of the calling terminal 100 and finds out what additional service processing is necessary through service triggering on the first invite message (ie, Confirming whether the calling terminal 100 is a terminal subscribed to the multimedia calling information providing service) and routing the first invite message to the corresponding application server 400 (S201 and S202).

When the application server 400 receives the first invite message routed from the first SIP server 300, the application server 400 checks whether the calling terminal 100 subscribes to a service, and then the called terminal. In operation S203, the processor 200 determines a multimedia data processing capability of whether the multimedia information may be displayed.

Subsequently, the application server 400 generates a second invite message based on the multimedia data processing capability of the called terminal 200 and the first invite message, and sends the second invite message to the first SIP. Send to server 300. At this time, when it is determined that the called terminal 200 cannot process multimedia data or the called terminal 200 is a terminal set to refuse to receive the multimedia call information, the application server 400 is the second person. The first invite message is provided to the first SIP server 300 as a byte message. In contrast, the application server 400 generates the second invite message including a service identifier and initial media related information when the capability of the called terminal 200 is determined to be a terminal capable of processing multimedia. The generated second invite message is provided to the first SIP server 300 (S204). Preferably, the initial media related information includes a media type and a codec for multimedia transmission information to be transmitted (S204).

When the second invite message is received, the first SIP server 300 inquires the location server 600 of the location of the called terminal 200, and transmits a destination called terminal from the location server 600 ( The second invite message is transmitted to the second SIP server 301 according to the location information of 200. Then, the second SIP server 301 transmits the second invite message to the called terminal 200 (S205, S206, S207).

When the second invite message is received, the called terminal 200 receives and processes early media from the network according to the service identifier and the initial media related information included in the second invite message. Enters preparation (opens the corresponding port to enter receive mode). Subsequently, the called terminal 200 generates a 180 ring message as a response to the second invite message, and transmits the 180 ring message to the application server 400. At this time, the 180 ring message includes a multimedia originating information reception confirmation identifier (S208).

When receiving the 180 ring message including the multimedia originating information receiving possible confirmation identifier, the application server 400 confirms that the called terminal 200 is in a state capable of receiving a service, the user of the calling terminal 100 The media to be provided to the called terminal 200 is determined according to the media providing condition stored in the service profile of the receiver. Preferably, the media providing condition includes any one or more of basic media information, called party information, called party group information, and time zone information (S209).

Subsequently, upon determining the media to be provided, the application server 400 may transmit a media transmission request message (or command) including media information / code and a called party address (IP address, port, etc.) according to the determination. Provided in (S210).

In response to the media transmission request message, the media server 500 transmits the determined media to the destination terminal 200 as the multimedia caller information (S211, S212).

Preferably, the multimedia origination information is provided according to the RTP / RTCP protocol. In addition, the multimedia outgoing information includes one or more of text, voice, sound, image, avatar, emoticon, video, and flash animation. Preferably, the multimedia outgoing information includes a repeat play request command, and when the called terminal plays the multimedia outgoing information from the beginning to the end according to the repeat play request command, the multimedia play information is repeatedly played.

Meanwhile, the application server 400 transmits the 180 ring message to the calling terminal 100 through the first SIP server 300 to notify that the call is being connected to the called terminal 200 (S213 and S214). .

When the user of the called terminal 200 confirms the multimedia transmission information and accepts the call by pressing a receive button (not shown) of the called terminal 200 for a call, the called terminal 200 200 OK message is generated, and the 200 OK message is provided to the application server 400 through a communication network. The 200 OK message includes codec information for a call between both terminals. After transmitting the 200 OK message, the called terminal 200 stops playing the multimedia outgoing information from the media server 500 and calls between the two terminals. It prepares to handle regular media. However, since there is a possibility of a blanking problem until a call between the actual calling / receiving terminals 100 and 200 is established, it is preferable that the last screen of the multimedia outgoing information is stopped on the screen of the called terminal 200. (S215).

Subsequently, upon receiving the 200 OK message, the application server 400 relays the 200 OK message to the calling terminal 100, while the application server 400 receives the 200 OK message as the called terminal 200. Recognizing that the user of the call has accepted the call, and transmits a message (or command) to the media server 500 requesting that the transmission of the multimedia outgoing information to the called terminal 200. Then, the media server 500 stops transmitting the multimedia outgoing information in response to the transmission medium request message, and provides an acknowledgment (Ack) message for receiving the message to the application server 400 (S216, S217, S218, S219).

On the other hand, the originating and receiving terminals 100 and 200 establish a call according to the 200 OK message. However, even after media switching, if the multimedia outgoing information, which should be previously stopped due to a network problem or an IP traffic characteristic, is received by the called terminal, it is preferable that the terminal discriminates and discards it through RTP filtering (S220, S221).

Second embodiment

Referring to FIG. 1, a multimedia call information service system in a SIP-based packet network according to a second embodiment of the present invention may include at least one SIP server 300, 301, an application server 400, and a media server 500. It includes.

Multimedia outgoing information service system according to the present invention may include one or more SIP server, but in the present embodiment described with one SIP server (300, 301), two SIP server ( It demonstrates with 300,301. However, it will be understood by those skilled in the art that the present invention is not limited by the number of SIP servers 300.

The SIP server 300 has a function defined in the SIP protocol. In addition, the SIP server 300 manages registration information and service profile information of a terminal registered according to the present invention. When the SIP server 300 receives the first setup message from the calling terminal 100 according to the present invention, the calling terminal 100 transmits multimedia outgoing information based on the service profile of the calling terminal. It is confirmed that the terminal subscribed to the provision service, and according to the present invention routes the first invite message to the application server 400.

When the application server 400 receives the first invite message from the SIP servers 300 and 301, the application server 400 confirms whether the calling terminal 100 subscribes to the multimedia calling information service. In addition, the application server 400 grasps the multimedia data processing capability of the called terminal 200 of the first invite message, and based on the multimedia data processing capability of the called terminal and the first invite message, Generates an invite message and provides the second invite message to the SIP server 300. When the second invite message is received at the SIP server 300, the SIP server 300 transmits the second invite message to the called terminal. According to an embodiment, when the SIP server 300 receives the second invite message, the SIP server 300 inquires the location server 600 of the location of the called terminal 200 and the location from the location server 600. The second invite message is transmitted to the called terminal 200 according to the information. Although the process of sending the invite message to the called terminal for the call varies, such a process is well known to those skilled in the art, and a detailed description thereof will be omitted. However, it will be understood by those skilled in the art that the present invention is not limited by the above-described byte transfer process.

Subsequently, the application server 400 generates a second invite message based on the multimedia data processing capability of the called terminal 200 and the first invite message, and sends the second invite message to the first SIP. Send to server 300. At this time, when it is determined that the called terminal 200 cannot process multimedia data or the called terminal 200 is a terminal set to refuse to receive the multimedia call information, the application server 400 is the second person. The first invite message is provided to the first SIP server 300 as a byte message. In contrast, the application server 400 generates the second invite message including a service identifier and initial media related information when the capability of the called terminal 200 is determined to be a terminal capable of processing multimedia. In operation S304, the generated second invite message is provided to the first SIP server 300. Preferably, the initial media related information includes a media type and a codec for multimedia transmission information to be transmitted.

When the second invite message is received at the SIP server 300, the SIP server 300 transmits the second invite message to the called terminal 200. According to an embodiment, when the SIP server 300 receives the second invite message, the SIP server 300 inquires the location server 600 of the location of the called terminal 200 and the location from the location server 600. The second invite message is transmitted to the called terminal 200 according to the information. Although the process of sending the invite message to the called terminal for the call varies, such a process is well known to those skilled in the art, and a detailed description thereof will be omitted. However, it will be understood by those skilled in the art that the present invention is not limited by the above-described byte transfer process.

Meanwhile, when receiving the second invite message, the called terminal 200 generates the media request message based on the initial media related information included in the second invite message, and sends the media request message. And transmits to the media server 500 in response to the second invite message. On the other hand, the called terminal 200 generates a 180 ring message before or after or simultaneously with generating the media request message.

When the media server 500 receives the media request message from the called terminal 200 as a response from the called terminal 200 to the second invite message, the media server 500 corresponds to the media request message. The multimedia outgoing information is transmitted to the called terminal 200.

Preferably, the multimedia outgoing information is generated according to the media provision condition stored in the profile of the calling terminal 100. The media provision condition includes any one or more of basic media information, called party information, called party group information, and time zone information. In addition, the multimedia outgoing information is provided to the called terminal 200 according to the RTP / RTCP protocol. The multimedia outgoing information includes one or more of text, voice, sound, image, avatar, emoticon, video, and flash animation. In addition, the multimedia outgoing information includes a repeat play request command, and when the called terminal 200 plays the multimedia outgoing information from the beginning to the end according to the repeat play request command, the play repeatedly.

Subsequently, when the media server 500 receives the multimedia call information provision stop request message from the called terminal 200, the media server 500 stops providing the multimedia call information to the called terminal 200. Preferably, the multimedia outgoing information provision stop request message is provided to the media server 500 according to the RTP / RTCP protocol.

Hereinafter, a second embodiment of the present invention will be described in detail with reference to the accompanying drawings.

For the sake of clarity, the present description will be described based on the assumption that the calling / calling terminals 100 and 200 are registered in the first SIP server 300 and the second SIP server 301, respectively. It will be appreciated by those skilled in the art that even when (100, 200) are both registered with a single SIP server, there is no difference in their main operation.

Referring to FIG. 3, when the calling terminal 100 transmits a first invite message to the first SIP server 300 for a call with the called terminal 200 and requests a call setup, the first SIP The server 300 manages registration information and service profile information of the calling terminal 100 and finds out what additional service processing is necessary through service triggering on the first invite message (ie, Confirming whether the calling terminal 100 is a terminal subscribed to the multimedia calling information providing service) and routing the first invite message to the corresponding application server 400 (S301 and S302).

When the application server 400 receives the first invite message routed from the first SIP server 300, the application server 400 checks whether the calling terminal 100 subscribes to a service, and then the called terminal. In operation S303, the processor 200 may determine the multimedia data processing capability of whether the multimedia information may be displayed.

Subsequently, the application server 400 generates a second invite message based on the multimedia data processing capability of the called terminal 200 and the first invite message, and sends the second invite message to the first SIP. Send to server 300. At this time, when it is determined that the called terminal 200 cannot process multimedia data or the called terminal 200 is a terminal set to refuse to receive the multimedia call information, the application server 400 is the second person. The first invite message is provided to the first SIP server 300 as a byte message. In contrast, the application server 400 generates the second invite message including a service identifier and initial media related information when the capability of the called terminal 200 is determined to be a terminal capable of processing multimedia. The generated second invite message is provided to the first SIP server 300 (S204). Preferably, the initial media related information includes a media type and a codec for multimedia transmission information to be transmitted (S304).

When the second invite message is received, the first SIP server 300 inquires the location server 600 of the location of the called terminal 200, and transmits a destination called terminal from the location server 600 ( The second invite message is transmitted to the second SIP server 301 according to the location information of 200. Then, the second SIP server 301 transmits the second invite message to the called terminal 200 (S305, S306, S307).

When receiving the second invite message, the called terminal 200 generates a 180 ring message as a response to the second invite message to establish a call with the network, and transmits the 180 ring message to the first. And 2 to the calling terminal 100 through the SIP server 300, 301 (S308, S309, S310).

In addition, the called terminal 200 generates a media request message based on the initial media related information included in the second invite message, transmits the media request message to the media server 500, and the media. In response to the request message, it is ready to receive and process multimedia outgoing information (or early media) from the media server 500 (open the corresponding port, run the application according to the corresponding codec, etc.). (S311).

When receiving the media request message from the called terminal 200, the media server 500 transmits the multimedia transmission information corresponding to the media request message to the called terminal 200 (S312).

Here, the multimedia outgoing information is provided according to the RTP / RTCP protocol, and the multimedia outgoing information includes one or more of text, voice, sound, image, avatar, emoticon, video, and flash animation. In addition, the multimedia outgoing information includes a repeat play request command, and when the called terminal 200 plays the multimedia outgoing information from the beginning to the end according to the repeat play request command, repeats the play and repeats the information without interruption. Will be displayed.

When the user of the called terminal 200 confirms the multimedia outgoing information and accepts the call by pressing a receive button (not shown) of the called terminal 200 for the call, the called terminal 200 A 200 OK message is generated from the message, and the 200 OK message is transmitted to the calling terminal 100 through a communication network. The 200 OK message includes codec information for a call between both terminals. After transmitting the 200 OK message, the called terminal 200 stops playing the multimedia outgoing information from the media server 500 and is a call between both terminals. Get ready to handle regular media. However, since there is a possibility of a blanking problem until a call between the actual calling / receiving terminals 100 and 200 is established, it is preferable that the last screen of the multimedia outgoing information is stopped on the screen of the called terminal 200. Do. At the same time, the called terminal 200 transmits a message (or command) to the media server 500 to request transmission of the multimedia outgoing information. Then, the media server 500 stops transmitting the multimedia outgoing information to the called terminal 200 (S313 to S316).

On the other hand, the originating and receiving terminals 100 and 200 establish a call according to the 200 OK message. However, even after media switching, if the multimedia outgoing information, which should be previously stopped due to network problems or IP traffic characteristics, is received by the called terminal, it is preferable that the terminal discriminates and discards it through RTP filtering (S317, S318).

Therefore, according to the above configuration, it is possible to provide the caller information of the multimedia to the called terminal during the call connection between the calling terminal and the called terminal in the SIP protocol based packet communication network.

Although the present invention has been described in detail by the above embodiments, the present invention is not limited thereto, and variations and improvements can be made without departing from the ordinary knowledge of those skilled in the art.

Claims (75)

delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete a) when the SIP server receives the first INVITE message from the calling terminal, the SIP server checks whether the calling terminal is a terminal subscribed to the multimedia calling information providing service, and the first serving message Routing to the application server; b) when the first server receives the first invite message, determining the multimedia data processing capability of the called terminal of the first invite message; c) generating a second invite message at the application server based on the processing capability of the first invite message and the called terminal, and transmitting the second invite message to the SIP server; d) when the second invite message is received at the SIP server, sending the second invite message to the called terminal; e) when a 180 ringing message for the second invite message is generated from the called terminal, and when the 180 ringing message includes a multimedia caller information reception confirmation identifier, Determining media to be provided to the called terminal according to media providing conditions stored in a profile of a calling terminal user, and providing a media transfer request message to a media server according to the determination; And f) transmitting the determined media as the multimedia caller information to the called terminal by the media server according to the media transmission request message. 18. The method of claim 17, wherein step c) c-1) in step b), if the capability of the called terminal is unable to process multimedia or is determined to be set to reject the multimedia outgoing information, the first invite message is sent as the second invite message to the SIP. Providing to the server; And c-2) when the capability of the called terminal is determined as a terminal capable of processing multimedia in step b), generating the second invite message including a service identifier and initial media related information in the application server; And providing the generated second invite message to the SIP server. 18. The method of claim 17, wherein the method is g) querying the location server for the location of the called terminal at the SIP server before performing step d); And h) in response to the location query of the called terminal from the SIP server, providing the location information of the called terminal to the SIP at the location server; The location server stores location information of the called terminal, and the SIP server performs step d) according to the location information. 20. The method of any one of claims 17 to 19, wherein the method is i) after the step f), when the 200 OK message is generated from the called terminal, requesting the media server to stop providing the multimedia call information to the media server; And j) stopping the provision of the multimedia outgoing information at the media server in response to the request of step i). 20. The method according to any one of claims 17 to 19, wherein the initial media related information includes a media type and a codec. 20. The SIP-based packet according to any one of claims 17 to 19, wherein the media providing condition includes any one or more of basic media information, called party information, called party group information, and time zone information. Multimedia calling information service method in communication network. 20. The method according to any one of claims 17 to 19, wherein the multimedia outgoing information is provided according to the RTP / RTCP protocol. 20. The SIP-based packet communication as claimed in any one of claims 17 to 19, wherein the multimedia outgoing information comprises one or more of text, voice, sound, image, avatar, emoticon, video, and flash animation. Multimedia outgoing information service method in network. 20. The method according to any one of claims 17 to 19, wherein the multimedia outgoing information includes a repeat play request command, and wherein the called terminal plays the multimedia outgoing information from the beginning to the end according to the repeat play request command. Method of repeatedly transmitting multimedia information in a SIP-based packet communication network, characterized in that the repeated playback. delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete a) When the SIP server receives the first INVITE message from the calling terminal, checks whether the calling terminal is a terminal subscribed to the multimedia calling information providing service, and sends the first serving message to the application server. Transmitting; b) when the first invite message is received by the application server, the application server determines the multimedia data processing capability of the called terminal and receives the second invite message based on the multimedia data processing capability of the called terminal. Generating and sending the second invite message to the SIP server; c) when the SIP server receives the second invite message, transmitting the second invite message to the called terminal at the SIP server; And d) in response to the second invite message, when a media request message is generated from the called terminal and the media request message is received at the media server, multimedia origination information corresponding to the media request message is sent to the called terminal. Transmitting; And e) stopping the provision of the multimedia outgoing information to the called terminal by the media server when a request for stopping the provision of the multimedia outgoing information from the called terminal is generated; Here, step b) is b-1) receiving the first invite message in step a) at the application server; b-2) identifying, by the application server, whether the capability of the called terminal is capable of processing multimedia data; b-3) the second invite message including initial media related information corresponding to the multimedia origination information, if the determination result in step b-2 is that the called terminal has the capability to process multimedia data; Providing to the SIP server; And b-4) if the called terminal is incapable of processing multimedia data as a result of the determination in step b-2), providing the first invite message as the second invite message to the SIP server; Multimedia outgoing information service method in a SIP-based packet communication network characterized in that it comprises a step. 45. The method of claim 44, wherein the initial media related information includes media type and media location information. 46. The method of claim 45, wherein the media request message is generated from the called terminal based on the initial media related information. 47. The method according to any one of claims 44 to 46, wherein the called terminal generates a 180 ring message before, after, or simultaneously with generating the media request message. . 47. The method according to any one of claims 44 to 46, wherein the multimedia outgoing information is generated according to a media provision condition stored in the subscriber's profile. 49. The method of claim 48, wherein the media provision condition includes at least one of basic media information, called party information, called party group information, and time zone information. Way. 47. The method according to any one of claims 44 to 46, wherein the multimedia outgoing information is provided according to the RTP / RTCP protocol. 47. A SIP-based packet communication as claimed in any of claims 44 to 46, wherein said multimedia outgoing information comprises one or more of text, voice, sound, images, avatars, emoticons, video, and flash animations. Multimedia outgoing information service method in network. The method according to any one of claims 44 to 46, wherein the multimedia outgoing information includes a repeat play request command, and wherein the called terminal reproduces the multimedia outgoing information from the beginning to the end according to the repeat play request command. Method of repeatedly transmitting multimedia information in a SIP-based packet communication network, characterized in that the repeated playback. In a SIP-based packet network, When receiving the first invite message from the calling terminal, confirming whether the calling terminal is a terminal subscribed to the multimedia calling information providing service, routing the first invite message to an application server, and receiving from the application server. A SIP server for transmitting the second invite message to a called terminal when receiving the second invite message; When receiving the first invite message, grasp the multimedia data processing capability of the called terminal of the first invite message, and based on the multimedia data processing capability of the called terminal and the first invite message; Generate an inbound message, provide the second invite message to the SIP server, receive a response to the second invite message from the called terminal, and receive a multimedia sender information receipt acknowledgment identifier to the response; When included, the application server for determining the media to be provided to the destination terminal according to the media provision conditions stored in the profile of the calling terminal user, the application server for providing a media transfer request message to the media server according to the determination; And And receiving the media transmission request message, wherein the media server transmits the multimedia caller information to the called terminal according to the media transmission request message. . 54. The method of claim 53 wherein the application server When a 200 OK message is generated from the called terminal, a predetermined caller information stop request message is generated, the generated caller information stop request message is provided to the media server, and the media server responds to the caller information stop request message. And stopping the provision of the multimedia caller information to the called terminal. 55. The apparatus of claim 53 or 54 wherein the application server is When the multimedia processing capability of the called terminal is unprocessable or rejection, the first invite message is generated as the second invite message. When the multimedia processing capability of the called terminal is multimedia capable, the service identifier and And generating the second invite message including initial media related information. 56. The system of claim 55, wherein the initial media related information includes a media type and a codec. 55. The system of claim 53 or 54, wherein the response is a 180 ring message including the multimedia sender information receivable acknowledgment identifier. 55. The method of claim 53 or 54, wherein the media providing condition includes any one or more of basic media information, called party information, called party group information, and time zone information. Multimedia outgoing information service system. 55. The system of claim 53 or 54, wherein the multimedia outgoing information is provided according to an RTP / RTCP protocol. 55. The multimedia in claim 53 or 54, wherein the multimedia outgoing information comprises one or more of text, voice, sound, image, avatar, emoticon, video, and flash animation. Calling Information Service System. 55. The apparatus of claim 53 or 54, wherein the multimedia outgoing information includes a repeat play request command, and wherein the called terminal repeats the play of the multimedia outgoing information from the beginning to the end according to the repeat play request command. Multimedia outgoing information service system in a SIP-based packet communication network, characterized in that. 55. The method of claim 53 or 54, wherein the application server requests the media server to stop providing the multimedia call information when a 200 OK message is generated from the called terminal. The media server stops providing the multimedia outgoing information to the called terminal according to the stop request. In a SIP-based packet network, When receiving the first INVITE message from the calling terminal at the SIP server, confirming whether the calling terminal is a terminal subscribed to the multimedia calling information providing service, and routing the first invite message to an application server. A SIP server for transmitting the second invite message to a called terminal when receiving a second invite message from the application server; When receiving the first invite message from the SIP server, grasp the multimedia data processing capability of the called terminal, and based on the identified multimedia data processing capability of the called terminal and the first invite message; The application server for generating an invite message; And A media server for transmitting multimedia origination information corresponding to the media request message to the called terminal when receiving a media request message from the called terminal as a response from the called terminal to the second invite message; Multimedia outgoing information service system in a SIP-based packet communication network comprising a. 64. The system of claim 63, wherein the called terminal generates a 180 ring message before, after, or simultaneously with generating the media request message. 64. The apparatus of claim 63, wherein the SIP server queries the location server for the location of the called terminal to obtain location information of the called terminal, and according to the location information of the called terminal from the location server in response to the query. The system of claim 1, wherein the second invite message is transmitted to the called terminal. 66. The method of any of claims 63 to 65 wherein the application server is And if the called terminal has the ability to process the multimedia data, generating a second invite message including initial media related information corresponding to the multimedia originating information. And generating the first invite message as the second invite message when the mobile station does not have the capability to process the multimedia data. 67. The system of claim 66, wherein the initial media related information includes media type and media location information. 66. The method according to any one of claims 63 to 65, wherein the media request message is generated from the called terminal based on the initial media related information. 66. The system of claim 63, wherein the multimedia outgoing information is generated according to a media provision condition stored in a profile of the originating terminal. 70. The method of claim 69, wherein the media provision condition includes at least one of basic media information, called party information, called party group information, and time zone information. system. 66. The method according to any one of claims 63 to 65, wherein the multimedia outgoing information is provided according to the RTP / RTCP protocol. 66. The SIP-based packet communication as claimed in any one of claims 63 to 65, wherein the multimedia outgoing information comprises one or more of text, voice, sound, image, avatar, emoticon, video, and flash animation. Multimedia outgoing information service system in network. 66. The method according to any one of claims 63 to 65, wherein the multimedia outgoing information includes a repeat play request command, and wherein the called terminal reproduces the multimedia outgoing information from start to finish according to the repeat play request command. Multimedia outgoing information service system in a SIP-based packet communication network, characterized in that the repeated playback. 66. The method of claim 63, wherein the media server is When the multimedia call information provision stop request message from the called terminal is received, the multimedia call information service system in the SIP-based packet communication network, characterized in that to stop the provision of the multimedia call information to the called terminal. 75. The system of claim 74, wherein the multimedia outgoing information provision stop request message is provided according to an RTP / RTCP protocol.

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