KR101098615B1 - System and Method for Providing Packet Network Based Visual Lettering Service - Google Patents

Abstract

Disclosed is a visual lettering service method for providing visual lettering content designated by a caller in a WCDMA network to a called terminal through a packet network.

The visual lettering service method of the present invention comprises the steps of: the originating exchange sending an SRI message to the home location registrar comprising VLTR service ID information indicating that the caller is a VLTR service subscriber; Sending, by the home location register, an SVR message including the VLTR service ID and the calling number to the VLTR server; Checking, by the VLTR server, URL information of the VLTR content designated by the caller, and returning to the home location register an SVR response message including an originator VLTR content URL and an action code for operating a VLTR service; Sending, by a home location register, a VLTR service ID information indicating that a caller is a VLTR service subscriber and the caller VLTR content URL information to a destination exchange based on the action code; Sending, by the destination exchange, to the destination terminal by including the VLTR service ID information and the caller VLTR content URL information in a setup mesh for call setup with the destination terminal; Accessing, by the called terminal, the caller VLTR content URL to download the caller VLTR content, storing and playing the downloaded caller VLTR content, or playing the previously stored corresponding VLTR content; There is a technical feature made to include.

Description

System and Method for Providing Packet Network Based Visual Lettering Service

The present invention relates to a visual lettering service that provides a caller with multimedia content designated by a caller when a call is made. More specifically, the visual call service as well as a video call terminal can be provided with a visual lettering service by delivering the visual lettering content through a packet network. A packet network based visual lettering service system and method for enabling the same.

Lettering service is a service that displays the content specified by the caller on the called party's terminal when making a call.

However, the initial lettering service that supports only texts or simple pictures such as nicknames did not satisfy subscribers' needs. Accordingly, in line with the development of communication technology and the activation of the contents industry, it is possible to see and listen in place of incoming rings recently. A visual lettering service providing multimedia content has been proposed.

However, since the conventionally proposed visual lettering service is a circuit network based service that plays multimedia through a switch, most voice call terminals that support only general voice calls cannot receive service.

In addition, even if a conventional voice network based visual lettering service is applied to a general voice call terminal, it is difficult to implement a multimedia that requires a wide bandwidth because a function for enabling a channel for a video call should be added to the terminal. Since it is impossible to transmit over a narrow bandwidth general voice call channel, the existing circuit network-based visual lettering service is not suitable for general voice call subscribers.

In addition, the conventional circuit network-based visual lettering service is a way that VLTR IP to play the multimedia, there is a problem that the channel resources are wasted because it must occupy a channel for multimedia playback during the multimedia playback.

Accordingly, there is a need for a more efficient way of processing a visual lettering service, and the active activation of WCDMA service is currently in progress. Therefore, it is urgent to prepare a specific visual lettering service method that can be applied to a WCDMA system.

Accordingly, the present invention is to solve the above disadvantages and problems of the prior art, a service standard for providing a visual lettering service for providing multimedia to the called terminal during the call waiting time of the caller in the WCDMA system through the packet network The purpose of the present invention is to propose a method for providing a service without significantly modifying the call processing standard of the WCDMA system, thereby enabling a simple visual lettering service to be implemented in the currently active WCDMA system. For the purpose of

In addition, an object of the present invention is to provide a packet network-based visual lettering service system and method by which multimedia data is downloaded through a packet network, so that a general voice call terminal can also use a visual lettering service.

In addition, the present invention stores the downloaded multimedia and can be used for the next call, so that the terminal can be provided with the visual lettering service without occupying the channel resources every time when repeatedly talking to the same caller, mobile communication Another object of the present invention is to provide a packet network-based visual lettering service system and method that prevents system resource waste and efficiently provides a service.

In order to achieve the above object, the present invention provides a visual lettering (VLTR) service method for providing a visual terminal designated content designated by a caller in a WCDMA network to a called terminal, wherein the calling terminal includes a called number according to a call origination. When the setup message is sent to the originating exchange, the originating exchange transmits a Call Proceeding to the originating terminal, and then sends an SRI (Send Routing Information) message requesting the called terminal information and the destination exchange routing information. A first step of including the VLTR service ID information (O-SFI) indicating that the caller is a VLTR service subscriber, an originating number, and a called number to the home location register; A second step of the home location register transmitting a service request (SVR) message including a VLTR service ID and a calling number to a VLTR server based on the VLTR service ID information included in the SRI message; A third step of the VLTR server recognizing that the caller is a VLTR service subscriber based on the service ID included in the SVR message, and confirming URL information of the VLTR content designated by the caller based on the calling number included in the SVR message; ; The fourth step of the VLTR server returning to the home location register an SVR response message including the originator VLTR content URL and an action code for operating a VLTR service; A fifth location in which the home location register includes VLTR service ID information indicating that a caller is a VLTR service subscriber and a caller VLTR content URL information in a Provide Roaming Number (PRN) request message based on the action code and transmits the information to the destination exchange; Steps; When the called exchange pages to a called terminal and receives a paging response from the called terminal, the VLTR service ID information and the caller VLTR content URL information are included in a setup message for setting up a call with the called terminal. A sixth step of including and transmitting the same to the called terminal; The called terminal checks whether the VLTR content corresponding to the caller VLTR content URL is stored in the memory of the terminal, and if not, accesses the caller VLTR content URL to download the caller VLTR content and downloads the downloaded caller. A seventh step of storing and reproducing the caller's VLTR content and reproducing the corresponding VLTR content if stored; It provides a packet network-based visual lettering service method comprising a.

At this time, in the second step, the home location register may further include a called number in the SVR message, and in this case, in the third step, the VLTR server may send the calling number and the called number included in the SVR message. On the basis of this, the URL information of the VLTR content designated by the caller for the called party can be checked.

And the seventh step includes: determining, by the called terminal, whether VLTR content corresponding to the caller VLTR content URL is stored in the memory of the terminal; Accessing the caller VLTR content URL if not stored, downloading the caller VLTR content, and storing and playing the downloaded caller VLTR content; Sending, by the called terminal, a Call Confirmed message and an Alert message to a destination exchange in response to the setup message; When the terminating exchange transmits a Connect message to a terminating terminal, the terminating terminal transmits a Connect response message to the terminating exchange and stops playback of the currently playing caller VLTR content; It may include.

At this time, in the step of stopping the playback of the caller VLTR content, when the download of the caller VLTR content is not completed, the destination terminal is to continue to download the caller VLTR content and to store the caller VLTR content when the download is complete; desirable.

In addition, the seventh step may include: determining, by the called terminal, whether VLTR content corresponding to the caller VLTR content URL is stored in the memory of the terminal; Playing the caller VLTR content stored in the memory if it is stored; Sending, by the called terminal, a Call Confirmed message and an Alert message to a destination exchange in response to the setup message; When the terminating exchange sends a Connect message to a terminating terminal, the terminating terminal sends a Connect response message to the terminating exchange, and stops playing the caller VLTR content currently being played; It may include.

Another object of the present invention for achieving the above object is a visual lettering (VLTR) service method for providing a visual terminal designated content designated by the caller to the destination terminal through the packet network, according to the call origination of the calling terminal, the originating exchange is a home position; When requesting the destination location information to the registrar, if the sender transmits VLTR service ID information indicating that the caller is a VLTR service subscriber, the home location register sends a VLTR service request message including a calling number to the VLTR server managing the designated content information of the VLTR service subscriber. Transmitting a first step; A second step of the VLTR server checking the URL information of the VLTR content designated by the caller, and returning a VLTR service response message including the caller VLTR content URL to the home location register; Transmitting, by the home location register, to the destination exchange by including VLTR service ID information indicating that the caller is a VLTR service subscriber and the caller VLTR content URL information in the incoming routing information request message; A fourth step of the destination exchange transmitting VLTR service ID information and the caller VLTR content URL information to a called terminal based on the VLTR service ID information included in the incoming routing information request message; The called terminal checks whether the VLTR content corresponding to the caller VLTR content URL is stored in the memory of the terminal, and if not, accesses the caller VLTR content URL to download the caller VLTR content and downloads the downloaded caller. A fifth step of storing and reproducing the caller's VLTR content and reproducing the corresponding VLTR content if stored; It provides a packet network-based visual lettering service method comprising a.

In this case, the first step may include: transmitting, by the calling terminal, a setup message including a called number to a calling exchange; After the calling exchange transmits a Call Proceeding message to the calling terminal, it indicates that the calling party is a VLTR service subscriber in a Send Routing Information (SRI) message requesting called terminal information and called exchange routing information to a home location register. Transmitting VLTR service ID information (O-SFI), a called number, and a calling number; Transmitting, by the home location register, a service request (SVR) message including a VLTR service ID and a calling number to a VLTR server based on the VLTR service ID information (O-SFI) included in the SRI message; It may include.

In the first step, the home location register may transmit a Service Request (SVR) message including a VLTR service ID and a calling number to a VLTR server, and in this case, the VLTR server may transmit the SVR message. Recognizing that the caller is a VLTR service subscriber based on the service ID included in the service ID, and confirming URL information of the VLTR content designated by the caller based on the calling number included in the SVR message; The VLTR server returning an SVR response message to the home location register, the SVR response message including the originator VLTR content URL and an action code for operating a VLTR service; In the third step, the home location register may include the VLTR service ID information and the caller VLTR content URL information in the incoming routing information request message based on the action code.

On the other hand, in the first step, the home location register may further include the called number in the SVR message, and in this case, in the second step, the VLTR server is the origination included in the message received from the home location register Based on the number and the called number, the URL information of the VLTR content designated by the caller for the called party can be checked.

In the third step, the home location register includes the VLTR service ID information and the caller VLTR content URL information in a provision Roaming Number (PRN) request message requesting the destination terminal information and the destination exchange routing information to the destination exchange. It may be a step.

The fourth step may further include: paging the destination exchange by a destination terminal; When the paging response is received from the called terminal, including the VLTR service ID information and the caller VLTR content URL information in a setup message for setting up a call with the called terminal and transmitting it to the called terminal; It may include.

And the fifth step includes: determining, by the called terminal, whether VLTR content corresponding to the caller VLTR content URL is stored in the memory of the terminal; Accessing the caller VLTR content URL if not stored, downloading the caller VLTR content, and storing and playing the downloaded caller VLTR content; Sending, by the called terminal, a Call Confirmed message and an Alert message to a destination exchange in response to the setup message; When the terminating exchange sends a Connect message to a terminating terminal, the terminating terminal sends a Connect response message to the terminating exchange, and stops playing the caller VLTR content currently being played; It may include.

At this time, in the step of stopping the playback of the caller VLTR content, when the download of the caller VLTR content is not completed, the destination terminal is to continue to download the caller VLTR content and to store the caller VLTR content when the download is complete; desirable.

And the fifth step includes: determining, by the called terminal, whether VLTR content corresponding to the caller VLTR content URL is stored in the memory of the terminal; Playing the caller VLTR content stored in the memory if it is stored; Sending, by the called terminal, a Call Confirmed message and an Alert message to a destination exchange in response to the setup message; When the terminating exchange sends a Connect message to a terminating terminal, the terminating terminal sends a Connect response message to the terminating exchange, and stops playing the caller VLTR content currently being played; It may include.

Another object of the present invention for achieving the above object is a visual lettering (VLTR) service system that provides a visual terminal designated by the caller to the destination terminal through the packet network, and manages the URL information of the VLTR content designated by each VLTR service subscriber When the VLTR service request message including the calling number is received from the home location register, the VLTR extracts the VLTR content URL information specified by the caller and includes the caller VLTR content URL in the VLTR service response message to return to the home location register. server; A media distribution platform that is connected to a data service node of a mobile communication system, stores and manages a plurality of VLTR contents, and downloads VLTR contents stored at a corresponding location when the mobile terminal is connected to a specific caller VLTR content URL. (MDP; Media Distribution Platform); In response to the call origination of the VLTR subscriber, when the destination location information request message including the VLTR service ID information (O-SFI) indicating that the caller is the VLTR service subscriber, the calling number, and the called number is received, the caller includes the calling number to the VLTR server. Transmits a VLTR service request message, and when the VLTR service response message including the sender VLTR content URL is received from the VLTR server, includes the VLTR service ID information and the caller VLTR content URL information in the called routing information request message to the destination exchange. A home location register for transmitting; When calling a VLTR subscriber, when operating as an originating exchange, the VLTR service ID information (O-SFI) indicating that the caller is a VLTR service subscriber, an originating number, and a destination number should be included in the message for requesting the destination exchange routing information. If the call routing message is transmitted to the home location register and the call routing information request message received from the home location register includes VLTR service ID information and caller VLTR content URL information, the call setup message for call setup is performed. A switch including VLTR service ID information and the sender VLTR content URL information and transmitting the same to the called-party mobile communication terminal; It provides a packet network-based visual lettering service system comprising a.

Here, the home location register may further include a called number in the VLTR service request message and transmit the same, and the VLTR server may transmit the caller to the called party based on the calling number and the called number included in the VLTR service request message. The VLTR content URL information specified for the information can be extracted.

The visual lettering service system, when a call setup message including the VLTR service ID information and the caller VLTR content URL is received from the exchange, determines whether the VLTR content corresponding to the caller VLTR content URL is stored in the memory of the terminal. A mobile communication terminal which checks whether or not, accesses the caller VLTR content URL, downloads the caller VLTR content, and stores and plays the downloaded caller VLTR content; It may further include.

When the VLTR content corresponding to the sender VLTR content URL is stored in the memory of the terminal, the mobile communication terminal plays the stored caller VLTR content.

When the call is connected to the switch in response to the call setup message, the mobile communication terminal stops the playback of the caller VLTR content currently being played, and if the caller VLTR content is being downloaded when the content is stopped. After continuing to download the content, it is preferable to store the caller VLTR content when the download is completed.

Another object of the present invention for achieving the above object is a visual lettering (VLTR) service system for providing a visual lettering content specified by the caller to the destination terminal through a packet network, and manages URL information of the VLTR content designated by each VLTR service subscriber. When the VLTR service request message including the calling number is received from the home location register, the VLTR content URL information specified by the caller is extracted, and the caller VLTR content URL is included in the VLTR service response message and returned to the home location register. VLTR server; A media distribution that is connected to a data service node of a mobile communication system, stores and manages a plurality of VLTR contents, and downloads VLTR contents stored at a corresponding location when the mobile terminal is connected to a specific caller VLTR content URL. Platform (MDP; Media Distribution Platform); It provides a packet network-based visual lettering service system comprising a.

When the visual lettering service system receives a call setup message including the VLTR service ID information and the caller VLTR content URL from the exchange, whether the VLTR content corresponding to the caller VLTR content URL is stored in the memory of the terminal. If it is not stored, go to the caller VLTR content URL to download the caller VLTR content, perform the storage and playback of the downloaded caller VLTR content, if stored, go to play the stored caller VLTR content Communication terminal; It may further include.

At this time, if the call is connected to the switch in response to the call setup message, the mobile communication terminal stops the playback of the caller VLTR content currently being played, and downloads the caller VLTR content if the download of the caller VLTR content is being performed. After continuing, it is desirable to save the sender VLTR content when the download is completed.

Meanwhile, the visual lettering service system of the present invention mediates between a CP (Contents Provider) and a VLTR server for changing VLTR content and services, and when a change of a VLTR content or service is requested from a CP, the corresponding request information is transmitted to the VLTR server. A gateway device for transmitting; It may further include.

In addition, the visual lettering service system of the present invention, mediation between the content provider (CP) and the media distribution platform for VLTR content registration, when the VLTR content is uploaded from the CP, the gateway to download the VLTR content to the media distribution platform Device; It may further include.

Therefore, according to the packet network-based visual lettering service system and method of the present invention, a service scheme suitable for the call processing standard of the WCDMA system is specifically proposed instead of a simple VLTR service concept. The service utilization in the system can be expected, and further, since it proposes a detailed call processing method that can be universally applied to all mobile communication systems, there is an advantage that the service can be simply applied without greatly modifying the existing call processing specification. .

In addition, according to the present invention, since the multimedia provided to the calling terminal is downloaded through the packet network during the call waiting time, the general voice call terminal can also use the visual lettering service.

In addition, according to the present invention, since the calling terminal stores the downloaded multimedia for use in the next call, when repeatedly calling the same called party, it is possible to receive a visual lettering service without occupying channel resources every time. Since the stored content is retrieved using the content URL, it can be downloaded as new content when the sender's VLTR content is changed, and the content can be downloaded through the packet network even after the call is connected with the called terminal. The waste of network resources of the communication system is prevented and there is an effect that the VLTR service can be efficiently provided.

Details of the above object and technical configuration of the present invention and the resulting effects thereof will be more clearly understood from the following detailed description based on the accompanying drawings.

First, Figure 1 is a network diagram of a visual lettering (VLTR) service system according to an embodiment of the present invention.

As shown, the visual lettering service system of the present invention provides a data service through a switch 110, 110 'for call exchange, a home location register 120 that manages subscriber location information and additional service information, and a packet network. A mobile communication network including a data service node 130 for the mobile communication network, and a VLTR server 140 and a media distribution platform 150. In the call processing to the terminal 100 ′, the VLTR service is provided to the destination terminal 100 ′ by downloading the VLTR content designated by the caller through the packet network.

VLTR server 140 of the present invention is a server that manages the URL information of the VLTR content designated by a plurality of VLTR service subscribers, when the VLTR service request message (SVR) is received from the home location register 120 during the call processing process Includes the VLTR content URL information specified in the VLTR service response message to return to the home location register 120.

In addition, the VLTR server 140 is connected to the gateway device 160 that mediates between the CP 170 and the VLTR server 140 in order to support the VLTR content change or service change of the CP (Contents Provider), CP When a change of the VLTR content or service is requested from 170, the request information is received and processed through the gateway device 160, and the result is returned to the gateway device 160.

The MDP 150 is a server device that stores and manages VLTR content. Unlike the existing VLTR_IP, which plays multimedia through an exchange, the MDP 150 downloads VLTR content to a destination terminal through a packet network. 130). The data service node 130 may be a PDSN, SGSN / GGSN, or the like.

The MDP 150 of the present invention downloads the VLTR content stored in the corresponding location to the called terminal 100 'when the called terminal 100' is connected to a specific caller VLTR content URL. VLTR content can be downloaded and saved through packet network.

In addition, the MDP 150 downloads the VLTR contents uploaded by the CP 170 through the gateway device 160 and stores them in an internal VLTR content storage DB (not shown), and manages the VLTR contents along with the corresponding VLTR content URL. .

A brief description of the packet network-based visual lettering service providing method of the present invention in the network structure as described above is as follows.

First, when a home location register of a VLTR service subscriber sets a VLTR service field (VLTR service ID) in an originating-service feature indicator (O-SFI), which is a caller supplementary service information field, and transmits subscriber registration data (InsertSubscriberData) to the exchange. The exchange stores the information, ie VLTR service ID information (O-SFI), indicating that the caller is a VLTR service subscriber in the visitor location register (VLR).

Subsequently, when the originating terminal 100 originates a call, the originating exchange 110 transmits the VLTR service ID information stored in the visitor location register VLR when the destination location request to the home location register 120 is requested.

The home location register 120 then obtains the VLTR content URL of the caller from the VLTR server 140 and provides it to the destination exchange 110 '. Accordingly, the destination exchange 110 provides the corresponding VLTR service ID information and the caller VLTR. The content URL is transmitted to the called terminal 100 '.

The receiving terminal 100 'receives the caller VLTR content URL, accesses the MDP 150 through the access network and the data service node 130, downloads and stores the caller VLTR content, The play operation is performed until the call is connected.

On the other hand, in the present invention to download and store the caller VLTR content to the destination terminal (100 '), so that if the same caller later sends a call to the caller so as not to occupy the network resources to receive the VLTR content again. Accordingly, when the receiving terminal 100 'receives the VLTR service ID information and the caller VLTR content URL, the called terminal 100' checks whether the corresponding VLTR content is stored, and if so, skips the download process and deletes the stored VLTR content. Must be regenerated.

Next, a packet network based visual lettering service system and method of the present invention will be described in detail with reference to FIG. 1 through the flowcharts of FIGS. 2 to 5.

First, FIG. 2 is a flowchart illustrating a visual lettering service registration / release process according to an embodiment of the present invention, and FIG. 3 is a flowchart illustrating a visual lettering service sound source change / registration process according to an embodiment of the present invention.

As shown in FIG. 2, when a specific mobile communication subscriber requests to subscribe to the VLTR service, the customer information system such as a marketing system of the mobile communication company requests the VLTR service registration to the home location register (S201). In this case, if only the WCDMA subscriber is entitled to the service subscription, the customer information system may check the mobile communication subscriber requesting the subscription and request the service registration.

Then, the home location registrar sets the VLTR service field (VLTR service ID) in the Originating-Service Feature Indicator (O-SFI), which is the originator supplementary service information field, and transmits the subscriber subscription data (InsertSubscriberData) to the exchange (S202). The O-SFI is stored and an Ack is returned to the home location register (S203).

Accordingly, the home location register performs VLTR service registration and returns the result to the customer information system (S204). When the customer information system requests subscriber creation and VLTR service registration to the VLTR server (S205), the VLTR server After performing the VLTR service registration of the subscriber, and responds to the result (S206). At this time, the VLTR server sets the VLTR media code of the subscriber as the default media code, and when the subscriber selects media, the VLTR server performs the operation of changing the media code to the corresponding media code.

3 is a flowchart illustrating a process of changing / registering a visual lettering service sound source according to an embodiment of the present invention.

As shown, when the VLTR subscriber accesses the CP and registers his / her VLTR content (media) and service change information, the CP requests a sound source and service change to the gateway device G / W (S301). The device sends a subscriber number and media code to the VLTR server and requests a service change (S302).

After changing the sound source or service information, the VLTR server responds with the result to the gateway device (S303).

Meanwhile, when the VLTR content is added, the CP may transmit the corresponding VLTR content to the gateway device to request the addition of the content (S304), and the gateway device requests the addition of the VLTR content to the VLTR server and the media distribution platform. Download the content (S305).

In the drawing, the content / service change process and the content addition process are shown as being sequentially performed, but this is for convenience of description, and each process is performed separately.

Next, the call processing process standardized to apply the visual lettering service to the WCDMA network will be described with reference to FIGS. 4 and 5 as follows.

FIG. 4 illustrates a case where caller VLTR content does not exist in a called terminal, and FIG. 5 illustrates a case where it exists.

First, as shown in FIG. 4, when the calling terminal transmits a setup message including a calling number and a called number to the calling exchange by sending a call (S401), the calling exchange sends a Call Proceeding message to the calling terminal. (S402), an Originating-Service Feature Indicator (O-SFI) stored in the visitor location register (VLR) in a Send Routing Information (SRI) message transmitted to request the destination terminal information and the destination exchange routing information to the called party home location register. And the called number and the calling number are transmitted (S403).

That is, when the caller is a VLTR service subscriber, the call exchanger sends VLTR service ID information (O-SFI) to the called party's home location register indicating that the caller is a VLTR service subscriber through an SRI message.

For the above operation, the VLTR service field for the VLTR service should be added to the additional service information field of the calling party's home location register subscriber DB, and the VLTR service subscription information may be a customer information system or a customer distribution server (CDS) or MMC. It can be registered using, and the service state is activated at the same time as the registration so that the service state information has only the subscription state (P), activation state (A).

Next, the home location register receiving the SRI checks the O-SFI of the SRI message and transmits an SVR message including the VLTR service ID and the calling number to the VLTR server (S404). If VLTR contents can be designated for each called party, the called party number must be included in the SVR message. Here, the signal processing between the home location register and the VLTR server will follow the TCP / IP interworking standard.

Next, the VLTR server recognizes that the VLTR service must be processed by checking the VLTR service ID (ID) included in the SVR received from the home location registrar, and based on the calling number included in the SVR, After checking the URL (S405), the SVR response message includes the action code meaning to operate the VLTR service and the caller VLTR content URL and returns to the home location register (S406). Here, the action code may be a VLTR service ID.

If the VLTR content URL designated by the sender is not found, the URL of the default content is included and transmitted, and the content can be specified for each called party, and if the called number is included in the SVR, the VLTR server determines that the caller is not associated with the called party. You must check the specified VLTR content URL.

Next, the home location register receiving the SVR response message, VLTR service ID information indicating that the caller is a VLTR service subscriber in a provision Roaming Number (PRN) request message sent to the destination exchange to request the destination terminal information and the destination exchange routing information. And the sender VLTR content URL information is included and transmitted (S407).

Thereafter, the home location register receives the PRN response message from the destination exchange (S408), obtains the destination exchange routing information, and transmits an SRI response message including the corresponding routing information to the originating exchange (S409). The originating exchange receiving the SRI response message transmits an IAM (Initial Address Message) including the calling number and the called number to the called exchange (S410), and the called exchange checks whether the called number is the subscriber number belonging to the called exchange. After confirming that the subscriber is not busy, the ACM sends an address complete message (ACM) indicating that it has received all the information necessary for call setup as a response to the IAM (S411). The Alert message is transmitted (S412).

On the other hand, the destination exchange receiving the PRN request message including the caller VLTR content URL information in step S407, after transmitting the ACM to the calling exchange in step S411 (Paging) to the destination terminal receives the response (S413). .

The destination exchange which has normally received the paging response transmits a setup message for call setup to the destination terminal, in which the facility parameter field of the setup message is entered in order to execute a caller supplementary service, that is, a visual lettering service. The VLTR service ID information and the sender VLTR content URL information are included and transmitted (S414).

Then, the receiving terminal receiving the Setup message checks whether the corresponding caller VLTR content is stored in the memory using the information included in the facility parameter field of the Setup message, and if it is determined that it is not stored ( S415) By accessing the caller VLTR content URL, the corresponding caller VLTR content is downloaded from the MDP (S416), and the stored caller VLTR content is stored and played back (S417).

Thereafter, the called terminal transmits a Call Confirmed message and an Alert message to the called exchange (S418, S419), and when the called terminal transmits a Connect message to the called exchange according to the called party's response, the called exchange responds to the called terminal (Connect Ack). It is transmitted (S420).

At this time, the called terminal stops playing the caller VLTR content currently being played (S421). On the other hand, if the VLTR content is large, it may be desirable to play the content in real time while downloading, rather than playing the content after downloading the VLTR content at once in step S416, in which case the download is not completed until the call is connected. Since the destination terminal may stop the playback of the content, it is preferable to continue the download until the download is completed so that the VLTR content is completely stored and used later.

That is, when the download of the caller VLTR content is not completed when the content reproduction stops, the called terminal may continue downloading the caller VLTR content and then store the caller VLTR content when the download is completed. In some cases, it is possible to interrupt the download based on the setting of the user, that is, the sender.

Meanwhile, the destination exchange receiving the Connect response message transmits an ANM (Answer Message) to the calling exchange to inform the connection of the called terminal (S422), and the calling exchange transmits the Connect message to the calling terminal, and receives the response. A call is established with the terminal (S423).

Next, FIG. 5 is a diagram illustrating a case in which the called terminal stores VLTR contents of the caller, and descriptions of S501 to S514 are the same as S401 to S414 of FIG.

The receiving terminal receiving the setup message including the VLTR service ID information and the caller VLTR content URL from the called exchange in step S514, checks whether the VLTR content corresponding to the caller VLTR content URL is stored in the terminal internal memory. If it is determined that the data is stored (S515), the VLTR content stored in the memory is played without accessing the VLTR content URL (S516).

Thereafter, the called terminal transmits a Call Confirmed message and an Alert message to the called exchange (S517, S518), and when the called terminal transmits a Connect message to the called exchange according to the called party's response, the called exchange responds to the called terminal (Connect Ack). It is transmitted (S519).

At this time, the called terminal stops playing the currently playing caller VLTR content (S520), and the called exchange receiving the Connect response message sends an ANM (Answer Message) to the calling exchange to inform the connection of the called terminal (S521). ), The originating exchange establishes a call with the originating terminal by transmitting / receiving a Connect / Connect Ack with the originating terminal (S522).

4 and 5 illustrate a call processing process of one embodiment, which can be applied to a WCDMA network, and messages and parameters are not limited by the above description, and call processing processes in most mobile communication networks. Since there is a slight difference in the name of the message, the parameter name, the protocol, and the like, and it is not very different in providing the VLTR service of the present invention, it is natural that the call processing process of FIGS. 4 and 5 can be applied to other mobile communication networks.

As those skilled in the art to which the present invention pertains may implement the present invention in other specific forms without changing the technical spirit or essential features, the embodiments described above should be understood as illustrative and not restrictive in all aspects. Should be. The scope of the present invention is shown by the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

The packet network-based visual lettering service system and method of the present invention described above are utilized to provide a lettering service providing multimedia to a called party during a call waiting time of a caller in a WCDMA-type mobile communication system. The present invention is applied to a constituting exchange, a home location register, and an apparatus for providing an additional service.

1 is a network diagram of a visual lettering service system according to an embodiment of the present invention;

2 is a flow chart illustrating a visual lettering service registration / cancellation process according to an embodiment of the present invention,

3 is a flowchart illustrating a process of changing / registering a visual lettering service sound source according to an embodiment of the present invention;

4 is a flowchart sequentially showing a method of visual lettering service in a WCDMA network according to a first embodiment of the present invention;

5 is a flowchart sequentially illustrating a method of visual lettering service in a WCDMA network according to a second embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

100, 100 ': mobile communication terminal 110, 110': exchanger (MSC)

120: home location register 130: data service node

140: VLTR server 150: media distribution platform (MDP)

160: gateway device (G / W) 170: content provider (CP)

Claims (24)

As a visual lettering (VLTR) service method for providing visual lettering content designated by a caller in a WCDMA network to a called terminal through a packet network, When the calling terminal transmits a setup message including a called number to the calling exchange according to the call origination, the calling exchange receiving the setup message transmits a call proceeding message to the calling terminal, and then the called party In the sender supplementary service information field of the Send Routing Information (SRI) message requesting the terminal information and the destination exchange routing information, include the VLTR service ID information (O-SFI) indicating that the caller is the VLTR service subscriber, the calling number, and the called number. Transmitting to a location register; A second step of the home location register transmitting a service request (SVR) message including a VLTR service ID and a calling number to a VLTR server based on the VLTR service ID information included in the SRI message; A third step of the VLTR server recognizing that the caller is a VLTR service subscriber based on the service ID included in the SVR message, and confirming URL information of the VLTR content designated by the caller based on the calling number included in the SVR message; ; The fourth step of the VLTR server returning to the home location register an SVR response message including the originator VLTR content URL and an action code for operating a VLTR service; A fifth location in which the home location register includes VLTR service ID information indicating that a caller is a VLTR service subscriber and a caller VLTR content URL information in a Provide Roaming Number (PRN) request message based on the action code and transmits the information to the destination exchange; Steps; When the called exchange pages to a called terminal and receives a paging response from the called terminal, the VLTR service ID information and the caller VLTR content URL information are included in a setup message for setting up a call with the called terminal. A sixth step of including and transmitting the same to the called terminal; The called terminal checks whether the VLTR content corresponding to the caller VLTR content URL is stored in the memory of the terminal, and if not, accesses the caller VLTR content URL to download the caller VLTR content and downloads the downloaded caller. A seventh step of storing and reproducing the caller's VLTR content and reproducing the corresponding VLTR content if stored; Packet network-based visual lettering service method comprising a. The method of claim 1, In the second step, The home location register further includes a called number in the SVR message and transmits it. In the third step, The VLTR server checks the URL information of the VLTR content designated by the caller for the called party based on the calling number and the called number included in the SVR message. The method according to claim 1 or 2, The seventh step, Determining, by the called terminal, whether VLTR content corresponding to the caller VLTR content URL is stored in a memory of the terminal; If not stored, the called terminal accessing the caller VLTR content URL to download the caller VLTR content, and storing and playing the downloaded caller VLTR content; Sending, by the called terminal, a Call Confirmed message and an Alert message to a destination exchange in response to the setup message; When the terminating exchange sends a Connect message to a terminating terminal, the terminating terminal sends a Connect response message to the terminating exchange, and stops playing the caller VLTR content currently being played; Packet network-based visual lettering service method comprising a. The method of claim 3, In the step of stopping playback of the sender VLTR content, When the called terminal does not complete downloading of the caller VLTR content, the called terminal continues to download the caller VLTR content, and when the download is completed, the packet network based visual lettering service method characterized in that . The method according to claim 1 or 2, The seventh step, Determining, by the called terminal, whether the VLTR content corresponding to the caller VLTR content URL is stored in the memory of the terminal; When the VLTR content is stored in the memory of the called terminal, playing the corresponding caller VLTR content stored in the memory; Sending, by the called terminal, a Call Confirmed message and an Alert message to a destination exchange in response to the setup message; When the terminating exchange sends a Connect message to a terminating terminal, the terminating terminal sends a Connect response message to the terminating exchange, and stops playing the caller VLTR content currently being played; Packet network-based visual lettering service method comprising a. As a visual lettering (VLTR) service method that provides a visual terminal designated by the caller to the destination terminal through the packet network, According to the call origination of the calling terminal, when the calling exchange requests the destination location information to the home location register, the calling exchange includes the VLTR service ID information indicating that the calling party is the VLTR service subscriber in the sender supplementary service information field of the Send Routing Information (SRI) message. A first step of transmitting, by the home location register, a VLTR service request message including a calling number to a VLTR server managing the designated content information of the VLTR service subscriber; A second step of the VLTR server checking the URL information of the VLTR content designated by the caller, and returning a VLTR service response message including the caller VLTR content URL to the home location register; Transmitting, by the home location register, to the destination exchange by including VLTR service ID information indicating that the caller is a VLTR service subscriber and the caller VLTR content URL information in the incoming routing information request message; The destination exchange transmits the VLTR service ID information and the caller VLTR content URL information to the called terminal based on the VLTR service ID information included in the called routing information request message, in the setup message for setting up a call with the called terminal. Performing a fourth step; The called terminal checks whether the VLTR content corresponding to the caller VLTR content URL is stored in the memory of the called terminal, and if not, accesses the caller VLTR content URL to download the caller VLTR content and downloads it. Storing and reproducing the called VLTR content and reproducing the corresponding VLTR content if stored; Packet network-based visual lettering service method comprising a. The method of claim 6, The first step, Sending, by the calling terminal, a setup message including the called number to a calling exchange; After the originating exchange transmits a Call Proceeding message to the originating terminal, the originator sends a VLTR service subscriber to a Send Routing Information (SRI) message requesting the destination terminal information and routing information for the destination exchange to a home location register. Transmitting and including VLTR service ID information (O-SFI), a called number, and a calling number indicating that the call is received; Transmitting, by the home location register, a service request (SVR) message including a VLTR service ID and a calling number to a VLTR server based on VLTR service ID information (O-SFI) included in the SRI message; Packet network-based visual lettering service method comprising a. The method of claim 6, In the first step, the home location register transmits a service request (SVR) message including a VLTR service ID and a calling number to the VLTR server, to the VLTR server, The second step, Recognizing, by the VLTR server, that the caller is a VLTR service subscriber based on the service ID included in the SVR message, and confirming URL information of the VLTR content designated by the caller based on the calling number included in the SVR message; The VLTR server returning an SVR response message to the home location register, the SVR response message including the originator VLTR content URL and an action code for operating a VLTR service; Including; In the third step, the home location register is a packet network-based visual lettering, characterized in that for transmitting the VLTR service ID information and the caller VLTR content URL information included in the incoming routing information request message based on the action code. Service method. 9. The method according to claim 7 or 8, In the first step, The home location register further includes a called number in the SVR message to transmit to the VLTR server, In the second step, The VLTR server checks the URL information of the VLTR content designated by the caller for the called party based on the calling number and the called number included in the message received from the home location register. Way. The method of claim 6, The third step, The home location register includes the VLTR service ID information and the caller VLTR content URL information in a Provide Roaming Number (PRN) request message requesting the destination exchange to the destination terminal information and routing information for the destination exchange to the destination exchange. Packet network based visual lettering service method, characterized in that the step. The method of claim 6, The fourth step, Paging by the called exchange to a called terminal; When the response to the paging is received from the called terminal, the VLTR service ID information and the caller VLTR content URL information is included in a setup message for setting up a call with the called terminal and transmitted to the called terminal. ; Packet network-based visual lettering service method comprising a. The method of claim 6, The fifth step, Determining, by the called terminal, whether the VLTR content corresponding to the caller VLTR content URL is stored in the memory of the terminal; If the VLTR content is not stored in the called terminal, accessing the caller VLTR content URL to download the caller VLTR content, and storing and playing the downloaded caller VLTR content; Sending, by the called terminal, a Call Confirmed message and an Alert message to a destination exchange in response to the setup message; When the terminating exchange sends a Connect message to a terminating terminal, the terminating terminal sends a Connect response message to the terminating exchange, and stops playing the caller VLTR content currently being played; Packet network-based visual lettering service method comprising a. The method of claim 12, In the step of stopping playback of the sender VLTR content, When the download of the caller VLTR content is not completed, the called terminal continues downloading the caller VLTR content and stores the caller VLTR content in the memory of the called terminal when the download is completed. Lettering service way. The method of claim 6, The fifth step, Determining, by the called terminal, whether the VLTR content corresponding to the caller VLTR content URL is stored in the memory of the terminal; When the VLTR content is stored in the memory of the called terminal, playing the corresponding caller VLTR content stored in the memory; Sending, by the called terminal, a Call Confirmed message and an Alert message to a destination exchange in response to the setup message; When the terminating exchange sends a Connect message to a terminating terminal, the terminating terminal sends a Connect response message to the terminating exchange, and stops playing the caller VLTR content currently being played; Packet network-based visual lettering service method comprising a. As a visual lettering (VLTR) service system that provides visual lettering content specified by a caller to a called terminal through a packet network, Manages the URL information of the VLTR content designated by each VLTR service subscriber, and when the VLTR service request message including the calling number is received from the home location register, extracts the VLTR content URL information designated by the caller, and extracts the caller VLTR content URL. A VLTR server including in the VLTR service response message and returning to the home location register; A media distribution platform that is connected to a data service node of a mobile communication system, stores and manages a plurality of VLTR contents, and downloads VLTR contents stored at a corresponding location when the mobile terminal is connected to a specific caller VLTR content URL. (MDP; Media Distribution Platform); When the call location information request message including the VLTR service ID information (O-SFI) indicating that the caller is the VLTR service subscriber and the calling number and the called number is received in the caller supplementary service information field according to the call origination of the VLTR subscriber, the VLTR server Send a VLTR service request message including a calling number to the VLTR server, and when the VLTR service response message including the calling party VLTR content URL is received from the VLTR server, the VLTR service ID information and the calling party VLTR content URL information are included in the incoming routing information request message. A home location register for sending to the called exchange; When calling a VLTR subscriber, when operating as an originating exchange, the VLTR service ID information (O-SFI) indicating that the caller is a VLTR service subscriber, an originating number, and a destination number should be included in the message for requesting the destination exchange routing information. If the call routing message is transmitted to the home location register and the call routing information request message received from the home location register includes VLTR service ID information and caller VLTR content URL information, the call setup message for call setup is performed. A switch including VLTR service ID information and the sender VLTR content URL information and transmitting the same to the called-party mobile communication terminal; Packet network based visual lettering service system comprising a. The method of claim 15, The home location register further includes a called number in the VLTR service request message and transmits it. The VLTR server extracts the VLTR content URL information specified by the caller for the called party based on the calling number and the called number included in the VLTR service request message. The method of claim 15, The visual lettering service system, When a call setup message including the VLTR service ID information and the caller VLTR content URL is received from the exchange, it is checked whether or not the VLTR content corresponding to the caller VLTR content URL is stored in the terminal memory. A mobile communication terminal for accessing the caller VLTR content URL, downloading the caller VLTR content, and storing and playing the downloaded caller VLTR content; Packet network based visual lettering service system characterized in that it further comprises. The method of claim 17, The mobile communication terminal, When the VLTR content corresponding to the caller VLTR content URL is stored in the memory of the terminal, the packet network-based visual lettering service system characterized in that for playing the stored caller VLTR content. The method of claim 17, The mobile communication terminal, When the call is connected to the switch in response to the call setup message, the playback of the caller VLTR content currently being played is stopped, and if the caller VLTR content is being downloaded when the content is stopped, the download of the caller VLTR content is continued. Packet network-based visual lettering service system, characterized in that for storing the sender VLTR content when the download is complete. delete delete delete delete delete

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