KR100398660B1 - Apparatus and method for providing a caller's image to video mobile terminal - Google Patents

Abstract

The present invention relates to an apparatus and method for providing a caller image to a video telephone terminal for providing a caller's image to a called party's video telephone terminal when a call is connected in a packet-based mobile video telephone service. If the calling video telephone terminal is registered with the caller image providing service based on the call request, the caller requests an image file inquiry about the called party number included in the received call setup message, and the response result is included in the call setup message. A gatekeeper for transmitting to a video telephone terminal; And when there is an image file inquiry request for a called number from the gatekeeper, transmits information of an image file corresponding to the called number and before the call is set up between the calling and called video telephone terminals. When the image file download request is received from the caller, the caller image management system for downloading the corresponding image file is provided. The called party can make a video call after confirming the calling number and the transmitted image together with the alerting.

Description

Apparatus and method for providing a caller's image to video mobile terminal}

The present invention relates to an apparatus and method for providing a caller image to a video telephone terminal, and more particularly, to an apparatus and method for providing an image of a caller when connecting video communication between mobile terminals.

Currently, in order to commercialize high-speed mobile Internet service in CDMA 2000 or IMT-2000, which is referred to as next generation mobile communication network, it is preparing its own technical specification all over the world and developing system accordingly.

High-speed mobile Internet service provides the Internet Protocol (hereinafter referred to as IP) mobility function of the terminal, and a mobile mobile terminal can receive the Internet packet data service at high speed without changing its network IP address. As a next generation mobile communication service, it supports mobility of packet data terminals, provides outgoing and incoming data calls, and guarantees security and quality of service.

Due to the high speed mobile Internet service, that is, CDMA 2000 1X service, the data rate of the wireless section is theoretically possible up to 153.6 Kbps.

Such high-speed mobile Internet service is commercialized into various services such as video telephone service, data roaming service, multimedia service, internet access service, intranet access service, and the like.

In the conventional line-based mobile phone service, the caller's number or name could be transmitted on the basis of a letter, but the size of data that can be transmitted was very limited.

However, a mobile terminal registered in a CDMA2000 packet network, i.e., given an IP address has no limitation on the size of data that can be received.

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above-mentioned conventional circumstances, and provides an apparatus for providing a caller image to a video telephone terminal for providing a caller's image to the called party's video telephone terminal when making a call in a packet-based mobile video telephone service. The purpose is to provide.

Another object of the present invention is to provide a method for providing a caller image to a video telephone terminal for providing a caller's image to the called party's video telephone terminal when making a call connection in a packet-based mobile video telephone service.

1 is a network diagram illustrating a device for providing a caller image to a video telephone terminal according to an embodiment of the present invention;

FIG. 2 is a view for explaining a message format between the gatekeeper and the caller image management system shown in FIG. 1;

3 and 4 are detailed tables of message types of the message header area shown in FIG. 2;

5 is a flowchart illustrating a method for providing a caller image to a video telephone terminal according to an embodiment of the present invention.

※ Explanation of code for main part of drawing

10, 12: video telephone terminal 14, 16: base station

18, 20: base station controller 22, 24: packet data serving node

26: Home Agent 28: Gatekeeper

30: caller image management system 32: database

34: web server 36: caller image management server

In order to achieve the above object, the apparatus for providing a caller image to a video telephone terminal according to a preferred embodiment of the present invention, in a video telephone network,

If the calling party's video telephone terminal is registered with the caller image providing service based on the subscriber-specific supplementary service-related field, it requests the image file inquiry about the called party number included in the received call setup message, and the response result is set up. A gatekeeper, which includes the message and transmits the message to the called video telephone terminal; And when there is an image file inquiry request for a called number from the gatekeeper, transmits information of an image file corresponding to the called number and before the call is set up between the calling and called video telephone terminals. And a caller image management system for downloading an image file corresponding to the request for downloading the image file from the image file.

In the method for providing a caller image to a video telephone terminal according to an embodiment of the present invention, a video telephone call is initiated by a video telephone terminal in a video telephone network capable of transmitting packet data, thereby performing signaling processing related to call setup. In the method of connecting,

A first step of determining whether a video telephone terminal which has originated the video telephone call is registered in a caller image providing service; A second step of requesting an image file inquiry about a called number included in a message of the call setup when the caller image providing service is registered; In response to the request, a third step of including information of an image file corresponding to a corresponding called number previously stored in a database in a message of the call setup and transmitting the information to a called party's video telephone terminal; And a fourth step of downloading an image file corresponding to the image file download request from the called party's video telephone terminal before the video telephone call is connected.

Hereinafter, an apparatus for providing a caller image to a video telephone terminal according to an embodiment of the present invention will be described with reference to the accompanying drawings.

1 is a network configuration diagram illustrating an apparatus for providing a caller image to a video telephone terminal according to an exemplary embodiment of the present invention, wherein the video telephone terminals 10 and 12 are attached to a video camera and capable of making and receiving video telephone calls; Base stations 14 and 16 which communicate with the video telephone terminals 10 and 12 by using a wireless section; Base station controllers 18 and 20 for performing R-P interface processing, packet subscriber state management (active, dormant), packet service connection with a wireless network, and interworking with a data network; A packet data serving node for performing PPP connection processing with the video telephone terminals 10 and 12, managing visitor subscribers, and transmitting / receiving packet data of the video telephone terminals 10 and 12; Referred to as PDSN) (22, 24); Home Agent performing a function of transmitting / receiving packet data of the video telephone terminals 10 and 12 in association with the PDSNs 22 and 24 of the current location (visiting network) of the video telephone terminals 10 and 12. (26); It is additionally installed in a mobile video telephone network capable of transmitting packet data, processes the video telephone call, manages information and status of subscribers using the video telephone terminals 10, 12, and authenticates based on the subscriber information. And a gatekeeper 28, which performs the function of billing generation. And a caller image management system 30 that incorporates the Internet into a mobile videophone network, manages the caller's image file, and cooperates with the gatekeeper 28 and the videophone terminals 10 and 12.

Here, the audio and video codecs used in the video telephone terminals 10 and 12 are the same. The video telephone terminals 10 and 12 support QCIF (176 × 144) or more, process at least 10 frames per second, support 256 colors or more, and video includes real color (color depth = 16 bits or more). Supporting video display (not shown); And a camera (not shown) supporting at least 100,000 pixels or more.

The video telephone terminals 10 and 12 are mobile IP input / output devices, and use a voice / video encoder to encode / decode video and audio signals into frames, convert the video and audio signals into IP packets, and send them to other H.323 entities. It has H.323 protocol stacks (H.225, H.245) for connecting and managing calls. Accordingly, the video telephone terminals 10 and 12 support mobile IP, and perform mobile IP registration and video telephone service registration at power on of the terminal.

In addition, the video telephone terminals 10 and 12 have a setting function for a voice call / call mode and a video call / call mode, and have a selection function for video call / general voice call connection at the time of incoming / outgoing call. .

The gatekeeper 28 manages additional service related fields for individual subscribers.

In addition, the caller image management system 30 includes: a database 32 previously storing image files for each called number designated for each video telephone subscriber subscribed to the caller image providing service; A web server 34 associated with the web site; And based on the caller image inquiry request message (including caller ID and caller ID) from the gatekeeper 28, search the corresponding image file in the database 32, and transmit the image file to the gatekeeper 28. Caller image management for downloading or updating an image file for each called number designated for each video telephone subscriber previously stored in the database 32 by a request for downloading or updating an image file from a called video telephone terminal through the web server 34. A server 36 is provided.

Image files stored in the database 32 are picture files such as JPEG, BMP, and the like, and video files such as GIF. Of course, image files in the form of photos or logos are also possible. The image file can range from tens of Kbytes to hundreds of Kbytes.

In particular, the image file stored in the database 32 may store and change a different image file for each called number that the caller wants to manage. That is, since there is a web server 34 in the caller image management system 30, the video telephone subscriber who subscribes to the caller image providing service can change the information stored in his / her storage space at any time through a web site connection. In other words, the video telephone subscriber stores and updates image files having different shapes for each called party number through the Internet connection. In addition, several called numbers may be grouped to assign the same number of image files to the called numbers of the group.

Here, the number of called party numbers that can be set per one calling number is limited by the capacity of the database 32 and the limitation of the use range of the calling image management server 36. In addition, it is possible to set to transmit only one caller image which is always fixed to all called terminals.

The gatekeeper 28 confirms whether or not additional service registration is performed between the calling video telephone terminal and the called video telephone terminal in the video telephone call processing process. If a caller image providing service is registered in an additional service of the calling video telephone terminal, the gatekeeper 28 transmits a caller image inquiry request message including a calling number and a called number to the caller image management server 36. . Accordingly, the caller image management server 36 which has received the caller image inquiry request message finds out the name of the image file in the database 32 based on the called party's called party number and sends it to the gatekeeper. To 28).

The gatekeeper 28 transmits the response result (that is, the IP address of the caller image management server, the storage location and file name of the caller image file) to the called party video telephone terminal in the video call call connection process. The called party's video telephone terminal receives the specified image file by attempting TFTP or HTTP connection to the web server 34 of the caller image management system 30 during the call connection with the calling video telephone terminal. .

When the called party's video telephone terminal downloads an image file, it displays a call connection ring tone while displaying it along with the calling number. Here, even if the call connection with the calling video telephone terminal is completed, if the reception of the image file is not completed, the called video telephone terminal maintains an alerting state without ringing a ringing tone.

In other words, the caller image management server 36 is a server that manages the image to be transmitted by the called party by the video telephone subscriber, and interworks with the gatekeeper 28 and the video telephone terminals 10 and 12.

Upon receiving the call setup signal, the gatekeeper 28 queries the caller image management server 36 for image file information, and the caller image management server 36 transmits the caller image management server 36 in the information storage area of the subscriber in the database 32. The directory and file name where necessary image files are stored are found and responded to the gatekeeper 28.

When the information is transferred to the called party's video telephone terminal during the call connection, the called party's video telephone terminal accesses the caller image management system 30 by TFTP or HTTP to download an image file.

On the other hand, the sender image management system 30 uses a TCP / IP Berkley socket connection and provides a port number for each TCP / IP socket connection. The caller image management system 30 configures a table related to service type and connection information between a system providing a corresponding service based on a control message type and relays a message with a network.

In addition, all messages transmitted between the sender image management system 30 and the gatekeeper 28 are composed of a header area and a data area as shown in FIG.

In the message header area shown in FIG. 2, the message version ID indicates a version of the message format currently used and is composed of one byte (two-digit BCD).

In addition, the message type distinguishes whether the message is a control message such as access, release, check, report, or service request and response message, and can be expressed from 0x00 to 0xFF as a 1 byte unasigned integer variable. Here, the message type is configured in various forms as shown in the tables shown in FIGS. 3 and 4, and codes are defined for each type, and contents are defined for each code.

In FIG. 2, the service ID is used when the message type is SVCTRLREQ (Service Control Request) or svctrlreq RR (Service Control Request Return Result), and indicates a service ID for each service provided by the gatekeeper 28, and the service ID. Is a 1-byte unasigned integer variable that can be expressed from 0x00 to 0xFF.

In FIG. 2, an operation code is used when querying the caller image management system 30 and an operation at that time is a service request, and an OP code is H'3F.

In FIG. 2, the Context ID is included in the invoke message, and the Context ID included in the invoke message should be transmitted with the same value in the return message, and can be expressed as "0x0000-0xFFFF" as a 2-byte unasigned integer variable. That is, the number that is assigned to every message in the system that invoked the message becomes the only number representing the message for a certain time. The context ID is included in the invoke message.

In FIG. 2, a Source ID indicates a system for transmitting a message, and includes a System Type (1 byte) + Site ID (1 byte) + System Number (1 byte) + Dummy (1 byte).

In FIG. 2, the Time Stamp indicates a system time in seconds for requesting a message, and is used together with a Context ID to determine whether the value is valid when the same Context ID is received and used as a 4-byte unasigned integer variable. 0x00000000 to 0xFFFFFFFF "can be expressed. The time stamp received in the message is included in the returned message as it is.

In FIG. 2, the message length is a value representing the length (bytes) of the data area recorded in the message, and can be expressed as "0x00000000-0xFFFFFFFF" by a 4-byte unasigned integer variable, and "0x00000000" when there is no data. Record it.

In FIG. 2, the data area is an area where query data or result data required for a service is recorded. The data area includes a service request history and service related information, and has a parameter tag value. to be.

In FIG. 2, the remaining Linked ID, Subsystem, Prefix, and Point Code will not be described regardless of the gatekeeper 28.

Next, a method of providing a caller image to a video telephone terminal according to an embodiment of the present invention will be described in detail with reference to the procedure diagram of FIG. 5.

First, mobile IP registration is performed when the video telephone terminals 10 and 12 are powered on. In this case, the home agent 26 in the mobile video telephone network gives a mobile IP address to the video telephone terminals 10 and 12, and a packet data serving node in the packet area where the video telephone terminals 10 and 12 are currently located. Information of (22, 24) is also managed. Accordingly, the position of the video telephone terminals 10 and 12 assigned the mobile IP address is continuously tracked.

From the following description, it is assumed that the video telephone terminal 10 is a calling video telephone terminal and the video telephone terminal 12 is a called video telephone terminal.

The video telephone terminals 10, 12 assigned the mobile IP address register video calls with the gatekeeper 28 through a RAS (Registration, Authentication and Status) channel. At this time, the host name (for example, gatekeeper.n-top.com) of the gatekeeper to be registered may or may not be set in advance in the video telephone terminals 10 and 12. If it is not set, it multicasts "gatekeeper.n-top.com or IP address" or "Gatekeeper Request" (GRQ). Accordingly, the video telephone terminals 10 and 12 send a registration request message (RRQ) to the gatekeeper 28 at an address sent by the gatekeeper 28 to the gatekeeper console (GCF). alias) (telephone number (MIN) of the terminal) and the assigned mobile IP address (steps S10 and S12).

The gatekeeper 28, which has received this information, performs authentication based on subscriber information managed in an internal database, and then sends a registration confirmation message (RCF) to the calling videophone terminal 10 and the called party image. It transmits to the telephone terminal 12 to permit registration (steps S14, S16).

Of course, in the embodiment of the present invention, the periodic registration procedure of the mobile IP standard is used as it is so that the state management of the video telephone terminals 10 and 12 can be performed periodically. That is, the video phone terminals 10 and 12 perform the same re-registration to the gatekeeper 28 at the time when the video phone terminals 10 and 12 perform the mobile IP re-registration with the home agent 26 without the addition of a separate timer management function. By doing so, unnecessary radio resources are not occupied. In addition, when the video telephone terminals 10 and 12 release the connection due to power off, the mobile phone 10 and 12 release the assigned mobile IP and the gatekeeper 28.

Thereafter, the calling video telephone terminal 10 registered with the gatekeeper 28 attempts to make a video call. In this case, the calling video telephone terminal 10 requests the gatekeeper 28 for permission to make a video call using an Admission Request (ARQ) (step S18).

The gatekeeper 28 processes the H.225 message through an Admission Confirmation (ACF) and, together with the destination video telephone terminal 12 in the E.164 (MIN) to IP address mapping table currently being managed. The mobile IP address is sent to the calling video telephone terminal 10 (step S20).

Subsequently, the calling video telephone terminal 10 transmits an H.225 call signaling setup message to the gatekeeper 28. The H.225 call signaling setup message is a gatekeeper-routed call signaling. -routed call signaling is established and sent to the gatekeeper 28 (step S22).

Accordingly, the gatekeeper 28 receiving the H.225 call signaling setup message includes the MIN and the called number of the calling video telephone terminal 10 in the SVCTRLREQ message and transmits it to the calling image management system 30. An inquiry is made as to whether or not a corresponding image file exists (step S24).

Upon receiving the SVCTRLREQ message, the caller image management system 30 queries the internal database 32 and transmits the image file name to the gatekeeper 28 using the svctrlreq RR message if the image file is registered. (Step S26). If the image file is not registered, the sender image management server 36 in the sender image management system 30 notifies the gatekeeper 28 that there is no registered image file by using an ERRREP message.

The gatekeeper 28, which has received the information on the image file name in this way, transmits the H.225 call signaling setup message to the called party's video telephone terminal 12 (step S28). In this case, when the H.225 call signaling setup message is transmitted, the gatekeeper 28 transmits the image file name to nonStandardData (a type of parameter) and the caller image management system 30 managed by the gatekeeper 28 (Public). ) Forward with the IP address included. That is, if the user of the calling video telephone terminal 10 is a subscriber image providing service subscriber, the location information of the image file is stored in Octet String format (for example, "164.1.1.10:user0001.xxx" in the "data" field of the nonStandardData parameter. ", Where 164.1.1.10 is the IP address of the caller image management system and user0001xxx is the image file name). Non-service subscribers do not use this field.

The called party video telephone terminal 12 receiving the H.225 call signaling setup message including the IP address and the image file name of the calling party image management system is connected to the calling party video telephone terminal via the gatekeeper 28. 10) by sending an H.225 Call Proceeding message and responding (step S30). The H.225 call progress message is set to gatekeeper-routed call signaling and sent to the calling videophone terminal 10 through the gatekeeper 28.

In addition, the called-party video telephone terminal 12 is registered with the gatekeeper 28, but has not yet been accepted (admission). Therefore, an admission request message (ARQ) is given to the gatekeeper 28. (Step S32). Accordingly, the gatekeeper 28 sends an acceptance confirmation message (ACF) to the called-party video telephone terminal 12 to allow the terminal 12 to accept (step S34).

Thereafter, the called party video phone terminal 12 sends an H.225 waiting message to the calling party video phone terminal 10 (step S36).

The called party video telephone terminal 12 accesses the caller image management system 30 using TFTP or HTTP to download an image file (step S38). At this time, the called party's video telephone terminal 12 holds the call until the download of the image file is completed. When the download of the image file is finished, the image is outputted along with the calling number at the same time as alerting.

In this way, when the called subscriber receives, the called video telephone terminal 12 sends an H.225 Connect message to the calling video telephone terminal 10 to notify that the call is established (step S40).

Thus, the calling / called party video telephone terminal 10, 12 controls the real-time transport protocol (RTP) and real-time transmission through the H.245 control channel signaling message provided by the gatekeeper 28. After establishing a real-time transport control protocol (RTCP) address, the user makes a video call through the real-time transport protocol (RTP).

At this time, the user traffic is communicated through the home agent to which the calling / receiving video telephone terminals 10 and 12 belong and the packet data serving node. That is, the audio and video data in the calling video telephone terminal 10 is transmitted through the calling packet data serving node 22 and the called home agent and the called packet data serving node 24. Is sent to the terminal 12. Then, the audio and video data of the called party video telephone terminal 12 is transmitted through the called party packet data serving node 24, the calling party home agent and the calling party packet data serving node 22. Is transmitted to the terminal 10.

As described in detail above, according to the present invention, when a call between video telephone terminals is attempted, the caller forwards the desired image together with the calling number to the called video telephone terminal, whereby the called party is called with alerting. After confirming the transferred image, you can make a video call.

In addition, the form of the image that can be transmitted by the caller can be any form that can be displayed by the called-party video telephone terminal such as a picture or a picture and a video, and in some cases, a commercial advertisement form. Can be utilized in

In addition, the present invention has the advantage that the service implementation is possible by adding a simple system matching function and some of the H.323 call setup message to the gatekeeper among the conventional video telephone network elements.

On the other hand, the present invention is not limited only to the above-described embodiment, but can be modified and modified within the scope not departing from the gist of the present invention, the technical idea to which such modifications and variations are also applied to the claims Must see

Claims (14)

In a video telephone network capable of transmitting packet data, caller image information is transmitted from the calling video telephone terminal to the called video telephone terminal before the call is set up according to the origination of the video telephone call, and the called video telephone terminal downloads the calling image. An apparatus for providing a caller image to a video telephone terminal for performing a video telephone service, If the calling video telephone terminal is registered in the caller image providing service based on the additional service related field for each subscriber, request the image file inquiry about the called number included in the call setup message received from the calling video telephone terminal. A gatekeeper for including a response result of the image file inquiry in the call setup message and transmitting the same to the called party's video telephone terminal; And If there is a request for the image file inquiry about the called number through the call setup message from the gatekeeper, information of the caller image file corresponding to the called number is transmitted to the gatekeeper, and the calling video telephone terminal and And a caller image management system for downloading the caller image file to the called party video telephone terminal when there is a request for downloading the caller image file from the called party video telephone terminal before call setup between the called party video telephone terminals. An apparatus for providing a caller image to a video telephone terminal. The method of claim 1, When the gatekeeper requests the caller image management system to query the image file, the gatekeeper transmits the telephone number and the called number of the calling video telephone terminal to the caller image management system using a specific message type. An apparatus for providing a caller image to a video telephone terminal. The method of claim 1, The gatekeeper transmits the call setup message to the called party's video telephone terminal by including the image file name for the caller image file and the Internet protocol address of the caller image management system in a specific parameter. An apparatus for providing a caller image to a video telephone terminal. The method of claim 1, The caller image management system, A database storing an image file for each called number designated for each video telephone subscriber subscribed to the caller image providing service; A web server associated with the website; And Based on the caller image inquiry request message from the gatekeeper, the database searches for an image file for each called number in the database and transmits the image file to the gatekeeper, and requests the download of the source image file from the called video telephone terminal. And a caller image management server for downloading the image file for each called number stored in the database. The method of claim 4, wherein And the image file for each called number stored in the database is one of a picture file, a picture file, and a video file. The method of claim 4, wherein And the image file for each called number stored in the database is an image file having a different shape for each called number. The method of claim 4, wherein And a plurality of called numbers for each video telephone subscriber stored in the database are grouped, and the caller image file for the grouped called numbers is an image file having the same shape as each other. A method for providing a caller image to a video telephone terminal which connects the video telephone call by performing signaling processing related to call setup as the video telephone terminal transmits a video telephone call in a video telephone network capable of transmitting packet data. A first step of determining whether the video telephone terminal that originated the video telephone call is registered in a caller image providing service; A second step of requesting an image file inquiry for a called number included in a message of the call setup of the video telephone terminal when the video telephone terminal is registered in the caller image providing service; A third step of, upon request of the image file inquiry, including information of an image file corresponding to a corresponding called number stored for each video telephone subscriber in a database in a message of the call setup and transmitting the information to a called party's video telephone terminal; And And a fourth step of downloading the image file to the called video telephone terminal when a request for downloading the image file is received from the called video telephone terminal based on the information of the image file before the video telephone call is connected. A caller image providing method to a video telephone terminal, characterized by the above-mentioned. The method of claim 8, And the image file corresponding to the called party number stored in the database is one of a picture file, a picture file, and a video file. The method of claim 8, And the image file stored in the database is an image file having a different shape for each called number. The method of claim 8, And the image file stored in the database is an image file having the same shape for all called numbers for each video telephone subscriber. The method of claim 8, A plurality of called numbers for each video telephone subscriber stored in the database are grouped, and the image files for the grouped called numbers are image files having the same shape as each other. The method of claim 8, The caller image providing method to the video telephone terminal, characterized in that the called video phone terminal maintains the standby state without the ringing tone until the download of the image file in the fourth step is completed. The method of claim 8, And the fourth step further comprises transmitting a calling number of the calling video telephone terminal to the called video telephone terminal.