KR20120021146A - System and method for providing service based on touch-screen - Google Patents

Abstract

PURPOSE: A system for providing a service based on a touch screen and a method thereof are provided to supply a service based on a touch screen using an IMS based standard device. CONSTITUTION: An application server(310) sets a call with a user terminal(100) including a touch input interface using an IMS(IP Multimedia Subsystem) call session control protocol. A media server(330) sets a media channel with the user terminal using the IMS call session control protocol. The media server transmits a touch screen and a media content file to the user terminal through the media channel by a media reproducing command of the application server.

Description

System and method for providing touch screen based service {SYSTEM AND METHOD FOR PROVIDING SERVICE BASED ON TOUCH-SCREEN}

The present invention relates to a system and a method for providing a touch screen based service.

A general method for exchanging information with a counterpart during a call is to send a dual-tone multi-frequency signaling (DTMF) signal by pressing a keypad. In this way, the call counterpart, ie, the system, interprets the DTMF signal to perform a predetermined service such as credit card number input, password input, menu selection, and the like.

A representative service of exchanging information with a counterpart during such a call is an IVR (Interactive Voice Response) service. IVR service is a service that guides the service information to the customer and converts the service information requested by the customer into DB or Host and then converts it into voice.

Recently, an IVVR (Interactive Voice & Video Response) service has been introduced to provide an automatic answering service for video and voice in place of a conventional IVR service based on voice and DTMF signals.

Therefore, services that exchange information with other parties during a call tend to require complex interactions beyond simple numeric and character key inputs in order to handle more tasks than before.

In addition, the input interface of the telephone terminal is not limited to a keypad, but is diversified into a touch input interface, a pointing device, and the like.

Various services based on touch screens have been proposed by using a touch input interface currently employed in most telephone terminals. For example, there is an IVVR service using a terminal capable of video telephony and equipped with a touch input interface.

However, to implement such a service, a dedicated device that can simultaneously process information related to video media, service logic, and touch screen is required.

Therefore, there is a burden of replacing the current media server with new dedicated equipment. Since the service providers and the media server operators are mostly separate, the replacement of the new media server is not only easy but expensive. Due to the burden of introducing dedicated equipment, the obstacles to commercialization eventually.

Accordingly, an aspect of the present invention is to provide a system and method for providing a touch screen based service using standard equipment of an IP multimedia subsystem (IMS) network.

According to one aspect of the invention there is provided a service providing system. A system for providing a touch screen-based service, the system comprising: an application server for establishing a call with a user terminal equipped with a touch input interface using an IMS (IP Multimedia Subsystem) call session control protocol; And establish a media channel with the user terminal by using the IMS call session control signaling protocol, and establish a touch screen and a media content file according to a service control command received from the application server through the media channel. And a media server for transmitting to the user terminal.

According to another feature of the invention there is provided a service providing method. This method is a method for providing a touch screen-based service, wherein the application server providing the service uses a user terminal and a media server having a touch input interface and a call using an IMS (IP Multimedia Subsystem) call session control protocol. Setting up; And transmitting, by the application server, a service control command for providing a touch screen based service to the media server using the IMS call session control signaling protocol, wherein the media server transmits a touch screen according to the service control command. And a media content file through a media channel established with the user terminal.

According to an embodiment of the present invention, since only a touch screen-based service can be provided using only standard equipment based on IMS, expensive dedicated equipment is not required as in the related art. Therefore, the termination configuration is simplified, and operators can configure the system at low cost without dedicated equipment, and ultimately, the commercialization is easily applied.

1 is a diagram illustrating a network configuration for providing a touch screen based service according to an exemplary embodiment of the present invention.
2 is a block diagram illustrating in detail the configuration of the service providing system of FIG. 1.
3 is a flowchart illustrating a touch screen based service providing method according to an exemplary embodiment of the present invention.
4 is a flowchart illustrating a touch screen based service providing method according to another exemplary embodiment of the present invention.
5 is a flowchart illustrating a touch screen based service providing method according to another exemplary embodiment of the present invention.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless specifically stated otherwise.

Hereinafter, a system and method for providing a touch screen based service according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram illustrating a network configuration for providing a touch screen based service according to an exemplary embodiment of the present invention.

Referring to FIG. 1, the user terminal 100 is a terminal having a touch input interface capable of voice and / or video call function and generating touch coordinates. For example, it may be a 3G mobile phone, a VoIP phone, or a soft phone of a computer (PC). In particular, in the case of a softphone of a computer, a mouse may be used instead of the touch screen to mimic a touch screen device.

The user terminal 100 is referred to as a system for providing a touch screen service through an IP Multimedia Subsystem (hereinafter, referred to as an 'IMS' network) (hereinafter, referred to as a “service providing system”). 300). Here, the touch screen based service may include an IVVR (Interactive Voice & Video Response) service.

The IMS network 200 interworks with a network providing an IP (Internet Protocol) packet-based data service and a network providing a circuit-based voice service. Since IMS and Next Generation Networking (NGN) are approximately equivalent, 'IMS' may be used to generically refer to both IMS and NGN where applicable in the disclosure of embodiments of the present invention.

The IMS network 200, which conforms to the standards defined by the 3GPP organization, is designed to allow service providers to manage various services that can be delivered over IP over any network type.

At this time, the IMS network 200 uses the Session Initiation Protocol (hereinafter referred to as 'SIP'), which was adopted as an IETF (Internation Engeneering Task Force) official standard in 1999, as a signaling protocol. SIP is an application layer signaling protocol. SIP-based messages are text-based and are composed of a request message and a response message model.

The IMS network 200 includes an IMS call session controller 201. The IMS call session controller 201 performs SIP-based call control and session handling functions. The IMS call session controller 201 refers to a Call State Control Function (CSCF), which may be classified into an Interrogating CSCF (I-CSCF), a Serving CSCF (S-CSCF), and a Proxy CSCF (P-CSCF). The group of CSCFs plays a key role for signaling the IMS network 200.

The service providing system 300 uses session initiation protocol (SIP) and real-time transport protocol (RTP) as main protocol stacks, and performs two-way touch information communication with the user terminal 100.

Here, RTP is a transport layer protocol capable of transmitting streaming traffic such as voice or video over the Internet, and is designed to be suitable for transmitting real-time data for a multimedia service.

The service providing system 300 includes an application server 310 and a media server 330.

The application server 310 is a system corresponding to an application server functional entity (AS-FE) of the IMS network 200, and is connected to the user terminal 100 through a SIP through an IMS call session controller 201 through a SIP agent. It serves as. The configuration of the application server 310 will be described in detail with reference to FIG. 2 below.

The media server 330 is a system corresponding to MRC-PE (Media Resource Processing Functional Entity) of the IMS network 200. Here, MRC-PE processes the payload of the packet used in the NGN.

The media server 330 transmits video and audio resources. That is, a SIP session is created with the application server 310 and an RTP channel is established with the user terminal 100. The media server 330 transmits the touch screen and the media content file according to the service control command received from the application server 310 to the user terminal 100 through the RTP channel.

2 is a block diagram illustrating in detail the configuration of the service providing system of FIG. 1.

Referring to FIG. 2, the application server 310 of the service providing system 300 includes a signaling communication unit 311, a service control unit 313, and a content DB 315.

The signaling communication unit 311 transmits and receives a SIP message for call setup with the user terminal 100 and the media server 330.

In addition, the signaling communication unit 311 transmits a service control command for requesting transmission of a touch screen and a media content file through a SIP session connected with the media server 330.

In addition, the signaling communication unit 311 transmits touch control information through a SIP session connected with the user terminal 100. Here, the touch control information refers to information used for processing and transmitting touch input information input by a user through a touch input interface (not shown) of the user terminal 100. The touch control information includes a filtering and converting method of touch input information and a transmission method of touch input information.

At this time, the 'SIP INFO method' is used to transmit the service control command and the touch control information. The SIP INFO method is for transmitting application level information using a SIP session.

The service controller 313 performs an operation according to the touch screen based service logic. That is, a function of calling and receiving a call, a function of recognizing a touch phone terminal notification message sent by a counterpart during a call setup process, a function of transmitting touch control information, a function of transmitting a play command of video and audio media to the media server 330, and a touch input. Receives and analyzes information. These functions can be implemented in hardware or software.

Here, the service controller 313 transmits the touch control information for designating the transmission method of the touch input information to the user terminal 100. The touch control information may be two embodiments.

According to one embodiment, the touch control information is set to transmit the touch input information using the SIP INFO method.

According to another embodiment, the touch control information is set to transmit the touch input information as a dual tone multi frequency (DTMF) signal.

The content DB 315 stores a touch screen and a media content file for a touch screen based service.

The touch screen may be a menu screen in which a plurality of selection items are listed. Alternatively, the image may be a simple still image or a video, or may be an image transmitted in real time from an external device such as a camcorder. In addition, the media content file may include a text, a still image, a video, and a voice announcement. The voice announcement is an audio file that describes a touch screen as voice.

Meanwhile, the media server 330 accesses and downloads the touch screen and the media content file according to the service control command received from the service controller 313 to the content DB 315.

In this case, the media server 330 may access the content DB 315 using the Hyper Text Transfer Protocol (HTTP) GET method to download the touch screen and the media content file. Here, the HTTP GET method is generally used when requesting resources of specific URLs (Uniform Resource Locators).

In addition, the media server 330 may download a touch screen and a media content file from the content DB 315 using a database language defined in a structured query language (SQL) procedure protocol.

Next, a series of processes for providing a touch screen-based service will be described based on the above description. In this case, the touch control information will be described according to embodiments.

In addition, in the description of the same components as those in Figs. 1 and 2, the same reference numerals are used.

First, FIG. 3 is a flowchart illustrating a touch screen based service providing method according to an exemplary embodiment of the present invention, in which touch input information is received using a SIP INFO method.

Referring to FIG. 3, the user starts by dialing or touching the service phone number to call the application server 310. At this time, the user terminal 100 transmits a SIP INVITE message requesting a service to the application server 310 through the IMS call session controller 201 (S101).

When the application server 310 includes a specific bit in the header of the SIP INVITE message, the user terminal 100 recognizes the terminal as having a touch input interface (S103). Here, when the user terminal 100 is a terminal provided with a touch input interface, it is assumed that a specific header of the SIP INVITE message includes information indicating that the terminal is equipped with a touch input interface and transmitted.

In this case, as a header including a specific bit, a Supported header or a Useragent header of the SIP INVITE message may be used. Alternatively, a newly defined header can be used.

The application server 310 delivers the SIP INVITE message received in step S101 to the media server 330 (S105) and performs SIP call setup. Then, the media server 330 transmits the SIP 200 OK message to the application server 310 (S107) in response to the SIP call setup, and prepares the RTP channel.

The application server 310 delivers the SIP 200 OK message received from the media server 330 to the user terminal 100 (S109). In addition, a SIP AcK message for confirming completion of call setup is received from the user terminal 100 (S111) and transmitted to the media server 330 (S113).

Thus, a SIP session is established between the user terminal 100 and the application server 310, the application server 310, and the media server 330, and an RTP channel is established between the user terminal 100 and the media server 330 ( S115).

As such, when the call setup is completed, the application server 310 recognizes that the user terminal 100 is a terminal having a touch input interface in step S103, and transmits the SIP INFO method including the touch control information to the user terminal 100 ( S117), and receives the SIP 200 OK (S119).

In addition, the application server 310 transmits to the media server 330 a SIP INFO method for requesting transmission of a touch screen and a media content file determined according to service logic (S121), and receives a SIP 200 OK (S123).

The media server 330 requests the download of the touch screen and the media content file to the application server 310 by using the HTTP GET method (S125). In operation S127, an HTTP 200 OK including the requested touch screen and a media content file is received. Then, the media server 330 transmits the touch screen and the media content file received in step S127 to the user terminal 100 through the RTP channel (S129).

The user terminal 100 outputs the touch screen received in step S129 and plays the media content file, and then receives information selected by the user through the touch input interface (S131).

Here, the touch input information refers to an output value corresponding to a touch of a specific portion of the touch screen. For example, the coordinate value of the touched position and the user's action (touchdown, drag, touchup, etc.) at that time.

The user terminal 100 filters and converts the touch input information according to the touch control information received in step S117 (S133). Here, the filtering and transformation may be various embodiments. For example, the touch control information may include absolute coordinate value information on the touch screen, and the user terminal 100 may extract coordinate values of a portion touched by the user. Alternatively, the touch control information may include information defining a user's motion on the touch screen, and the user terminal 100 may extract a user's motion corresponding to a portion touched by the user.

The user terminal 100 transmits the SIP INFO method including the filtered and converted touch input information to the application server 310 (S131) and receives the SIP 200 OK (S133).

Then, the application server 310 determines whether to terminate the service according to the predefined service logic (S135).

In this case, if it is determined that the service continues, the touch input information received in step S131 is analyzed (S137) to determine the next touch screen and the media content file (S139). In operation S121, the service control command requesting the transmission of the next touch screen and the media content file is transmitted to the media server 330.

However, if it is determined in step S135 that the service is terminated, the SIP BYE message requesting the termination of the call is transmitted to the user terminal 100 and the media server 330 (S141 and S143) to receive the SIP AcK message, respectively (S145 and S147). . This releases the SIP session and terminates the call.

4 is a flowchart illustrating a touch screen based service providing method according to another exemplary embodiment of the present invention. 4 is similar to FIG. 3, but corresponds to another embodiment in that touch input information is received using a DTMF signal.

Referring to FIG. 4, the user terminal 100 transmits a SIP INVITE message requesting a service to the application server 310 (S201).

When the application server 310 includes a specific bit in the header of the SIP INVITE message, the user terminal 100 recognizes the terminal as having a touch input interface (S203).

The application server 310 transmits the SIP INVITE message received in step S201 to the media server 330 (S205) and proceeds with SIP call setup. Then, the media server 330 transmits the SIP 200 OK message to the application server 310 (S207) in response to the SIP call setup, and prepares the RTP channel.

The application server 310 transmits the SIP 200 OK message received from the media server 330 to the user terminal 100 (S209) and delivers the received SIP AcK message to the media server 330 (S213). .

Thus, a SIP session is established between the user terminal 100 and the application server 310, the application server 310, and the media server 330, and an RTP channel is established between the user terminal 100 and the media server 330 ( S215).

When call setup is completed, the application server 310 recognizes that the user terminal 100 is a terminal provided with a touch input interface in step S203 and transmits a SIP INFO method including the touch control information to the user terminal 100 (S217). ), And receives the SIP 200 OK (S219).

In this case, the touch control information is defined to store an area of the touch screen and a DTMF signal value corresponding thereto, and transmit the touch input information as a DTMF signal.

The application server 310 transmits to the media server 330 a SIP INFO method for requesting the reception of a DTMF including touch input information together with a request for transmission of a touch screen and a media content file determined according to service logic (S221). Receive 200 OK (S223).

The media server 330 requests the download of the touch screen and the media content file to the application server 310 by using the HTTP GET method (S225). In operation S227, an HTTP 200 OK including a requested touch screen and a media content file is received.

Then, the media server 330 transmits the touch screen and the media content file received in step S227 to the user terminal 100 through the RTP channel (S229).

The user terminal 100 outputs the touch screen received in step S229 and plays the media content file, and then receives information selected by the user through the touch input interface (S231).

The user terminal 100 extracts the coordinate value of the part touched by the user or the information defining the user's motion according to the touch control information received in step S217 and converts the information into a DTMF signal (S233) to convert the media server through the RTP channel ( 330 and transmits (S235).

Then, the media server 330 transmits the SIP INFO method including the DTMF signal received in step S235 to the application server 310 (S237) to receive the SIP 200 OK (S239).

The application server 310 determines whether to terminate the service according to the predefined service logic (S241).

In this case, if it is determined that the service continues, the touch input information received in step S237 is analyzed (S243) to determine the next touch screen and the media content file (S245). In operation S221, the service control command for requesting transmission of the next touch screen and the media content file is transmitted to the media server 330.

However, if it is determined in step S1241 that the service is terminated, the SIP BYE message requesting the termination of the call is transmitted to the user terminal 100 and the media server 330 (S247, S249) to receive the SIP AcK message, respectively (S251, 253). . This releases the SIP session and terminates the call.

5 is a flowchart illustrating a touch screen-based service providing method according to another embodiment of the present invention, wherein an application server 310 views a touch screen-based service that the application server 310 sees on the user terminal 100 during call setup. TS-IVR) is included.

Referring to FIG. 5, when a user dials a service number, the UE (Touch Screen Terminal), that is, the user terminal 100 transmits an INVITE message including SIP based TS-IVR Indication Information (S301).

Here, the SIP based TS-IVR Indication Information means that the user terminal 100 has a touch screen device and is capable of supporting a multimedia TS (Touch Screen) -IVR service.

Then, the application server (AS-FE) 310 receives the INVITE message from the IMS call control unit 201, for example, the switch S-CSC-FE, based on the called party identity (service number). The application server (AS-FE) 310 recognizes that the calling terminal, that is, the user terminal 100, is a terminal supporting SIP based TS-IVR service and multimedia call.

At this time, the application server (AS-FE) 310 delivers the INVITE message with the SDP of the user terminal 100 to the media server (MRC-FE) 330 to set up the video call (S303). Then, the media server (MRC-FE) 330 returns 200 OK (S305).

The application server (AS-FE) 310 transmits a 200 OK message including the SIP based TS-IVR Notification Information to the user terminal (S307). In this way, the application server (AS-FE) 310 may inform the user terminal 100 that it is performing a SIP based TS-IVR service. In this case, the user terminal 100 may prepare for a SIP based TS-IVR service. For example, a SIP based TS-IVR service will be shown to the user soon so that the user can be notified to touch.

The user terminal 100 transmits an ACK message (S309), and the application server (AS-FE) 310 transmits the ACK message to the media server (MRC-FE) 330 (S311).

Then, the RTP voice and video channel is initialized and set between the user terminal 100 and the media server (MRC-FE) 330 (S313).

Since the process is essentially the same from step S117 to S151 of FIG.

The application server (AS-FE) 310 transmits an INFO message with a specific content type header to the user terminal 100 as in the case of "application / tspkg" (S315). Then, the user terminal 100 returns a 200OK message (S317).

Here, step S315 includes touch control information describing a touch area and a corresponding touch event related to the current service step. In addition, after operation S317, that is, after receiving an INFO message having a header of a specific content type, the user terminal 100 enables the touch screen.

Then, the application server (AS-FE) 310 exchanges a media control message with the media server (MRC-FE) 330 (S319). In this case, the media control message includes a media play command including a voice and an image. For example, RFC4240, RFC5552, IETF Media control (RFC number will be available soon) may be applied.

The media server (MRC-FE) 330 plays the announcement in accordance with the command received in step S319 (S321).

Next, when the user touches a point of a specific area point of the screen, the user terminal 100 transmits a touch event for the corresponding area to the application server (AS-FE) 310 (S323). Such touch events can be coordinates or digits.

Then, the application server (AS-FE) 310 returns 200 OK (S325). Then, the application server (AS-FE) 310 transitions to the next service phase according to the touch event. In this case, after operation S325, the operation of the application server (AS-FE) 310 is omitted, but operations S319 and S321 are repeatedly performed.

On the other hand, if the user wants to terminate the call, the user terminal 100 transmits a message (BYE) requesting the call termination to the application server (AS-FE) (310) (S327), the application server (AS-FE) ( In step 310, a 200OK message is received.

This completes the call termination and releases the service session. Among the steps S315 to S329, the embodiment replaces the steps S217 to S253 in FIG. 4 but is omitted.

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

Claims (17)

In the system for providing a touch screen-based service,
An application server for establishing a call with a user terminal equipped with a touch input interface using an IMS (IP Multimedia Subsystem) call session control protocol; And
Connect to the application server using the IMS call session control signaling protocol to establish a media channel with the user terminal, and transmit a touch screen and a media content file according to a media play command received from the application server through the media channel. Media server to send to user terminal
Service providing system comprising a. The method of claim 1,
The application server,
A service providing system for transmitting and receiving a Session Initiation Protocol (SIP) message for establishing a call with the user terminal and the media server. The method of claim 2,
The application server,
And a media play command requesting the media server to transmit the touch screen and the media content file using a SIP INFO method. 4. The method according to any one of claims 1 to 3,
The application server,
When the call setup is completed, using the Session Initiation Protocol (SIP) INFO method transmits a touch control event to the user terminal to receive the touch input information processed according to the touch control event from the user terminal. The method of claim 4, wherein
The touch control event is set to transmit the touch input information using the SIP INFO method,
The application server,
And a SIP message including the touch input information from the user terminal according to the touch control event. The method of claim 4, wherein
The touch control event is set to transmit the touch input information as a dual tone multi frequency (DTMF) signal,
The application server,
Sending a media play command requesting the media server to receive a DTMF signal including touch input information together with a request for transmitting the touch screen and the media content file, and transmitting a DTMF signal including touch input information transmitted by the user terminal. A service providing system that receives from the media server using a SIP INFO method. The method of claim 4, wherein
The application server,
The service providing system for transmitting the touch control event when receiving an invite message including a tag indicating the acceptance of a touch-based interactive video response (IVR) service from the user terminal. The method of claim 7, wherein
The application server,
And checking information included in a previously negotiated field among fields included in the header of the invite message to determine whether the terminal includes the touch input interface. 4. The method according to any one of claims 1 to 3,
The application server,
A content DB storing the touch screen and the media content file;
The media server,
And receiving the media play command, accessing the content DB by using a Hyper Text Transfer Protocol (HTTP) GET method, and downloading the touch screen and the media content file to the user terminal. In the method for providing a touch screen-based service,
Setting up a call by an application server providing the service using an IMS (IP Multimedia Subsystem) call session control protocol with a user terminal and a media server equipped with a touch input interface; And
Transmitting, by the application server, a service control command for providing a touch screen based service to the media server using the IMS call session control signaling protocol;
The media server transmits a touch screen and a media content file according to the service control command through a media channel established with the user terminal. The method of claim 10,
Between the setting step and the transmitting step,
Transmitting a session initiation protocol (SIP) message including touch control information to the user terminal;
After the transmitting step,
Receiving touch input information processed according to the touch control information from the user terminal; And
Analyzing the touch input information, extracting a next touch screen and a media content file, and transmitting a SIP message requesting transmission to the media server
Service providing method further comprising. The method of claim 11,
The step of transmitting the SIP message including the touch control information,
Determining whether the SIP message requesting call setup received from the UE includes information indicating that the UE is a terminal having a touch interface; And
If the information is included, transmitting a SIP message including the touch control information
Service providing method comprising a. The method of claim 11,
The touch control information is set to transmit the touch input information by using a SIP INFO method,
Wherein the receiving comprises:
The service providing method for receiving a SIP message containing the touch input information from the user terminal. The method of claim 11,
The touch control information is set to transmit the touch input information as a dual tone multi frequency (DTMF) signal,
The step of transmitting the service control command,
Transmitting a SIP message including a request for transmission of the touch screen and the media content file and a request for receiving a DTMF signal including touch input information to the media server,
Wherein the receiving comprises:
And a DTMF signal including touch input information transmitted by the user terminal from the media server using a SIP INFO method. The method according to any one of claims 10 to 14,
After transmitting the service control command,
Receiving a Hyper Text Transfer Protocol (HTTP) GET method for requesting access to a content DB in which the touch screen and the media content file are stored from the media server; And
Transmitting an HTTP message including the touch screen and a media content file to the media server
Service providing method further comprising. The method of claim 10,
In the setting step,
And providing information indicating that the user terminal has a touch screen interface and supports a touch screen based service in an invite message. The method of claim 10,
In the setting step,
And providing notification information to the user terminal in response message that the application server performs the touch screen-based service.

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