KR100398658B1 - An apparatus and method for providing a video telephone service between personal computer and mobile terminal over the packet data network - Google Patents

Abstract

The present invention relates to an apparatus and method for providing a video telephone service between a personal computer and a mobile telephone terminal in a mobile telephone network for providing a video telephone service between a personal computer and a mobile telephone terminal of a mobile telephone network in a wireless environment through the Internet. A web phone server for relaying a video telephone call from a personal computer that has downloaded a predetermined client program from the server; And processing a video telephone call from the personal computer transmitted from the web phone server, managing information and status of the subscriber using the video telephone terminal and the personal computer, and performing authentication and billing based on the subscriber information. By providing a gatekeeper, PC users on the Internet can directly make video calls on the web with their mobile phone number without going through a separate program installation process through the web site connection and without knowing the IP address of the mobile video phone terminal. As broadband becomes popular, many people receive more active and convenient services at home as well as at work.

Description

An apparatus and method for providing a video telephone service between a personal computer and a mobile terminal in a mobile telephone network and a method thereof

The present invention relates to an apparatus and a method for providing a video telephone service between a personal computer and a mobile telephone terminal in a mobile telephone network. More particularly, the present invention relates to an H.323 video telephone standard for a mobile telephone network using a mobile IP function of a CDMA 2000 data network. The present invention relates to a device and a method for providing a video telephone service between a personal computer and a mobile telephone terminal in a mobile telephone network through the Internet.

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 can be commercialized into various services such as video telephone service, data roaming service, multimedia service, internet access service, intranet access service, and the like.

In particular, although video telephony is possible over a wired network, that is, the Internet, video telephony service between a personal computer and a mobile telephone terminal is not possible in a mobile telephone network in a wireless environment. Of course, in case that the functions of terminal information inquiry and call notification are implemented by using existing network elements such as home location register (HLR), SMS, etc., the circuit network No.7 signal network and IP-based data network Should be implemented to enable interworking of. In this case, the effect on the network is greatly increased, such as the need to modify and supplement existing subscriber data. In the future, many changes and supplements must be continued to ensure continuous service in the IMT-2000 network.

SUMMARY OF THE INVENTION The present invention has been proposed to solve the above-mentioned problems. The present invention provides a personal computer and a mobile terminal in a mobile telephone network to provide a video telephone service from a personal computer to a mobile terminal of a mobile telephone network in a wireless environment through the Internet. It is an object of the present invention to provide an apparatus for providing a video telephone service.

Another object of the present invention is to provide a video telephone service providing method for a personal computer and a mobile terminal in a mobile telephone network which provides a video telephone service from a personal computer to a mobile telephone terminal of a mobile telephone network in a wireless environment through the Internet.

1 is a network configuration diagram of a video telephone service providing apparatus between a personal computer and a mobile telephone terminal in a mobile telephone network according to an embodiment of the present invention;

2 is a flowchart illustrating a video telephone service providing method between a personal computer and a mobile telephone terminal in a mobile telephone network 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: web phone server 32: element management system

34: billing information management system 36: customer information management system

38: network management system 40: web server

42: personal computer

100: mobile phone network (CDMA 2000 data core network)

In order to achieve the above object, a video telephone service providing apparatus between a personal computer and a mobile telephone terminal in a mobile telephone network according to a preferred embodiment of the present invention ensures the mobility of the video telephone terminal, and changes the Internet of the video telephone terminal. An apparatus for providing a video telephone service in a mobile telephone network capable of continuously tracking a protocol address and transmitting packet data,

A web phone server for relaying a video telephone call from a personal computer which has downloaded a predetermined client program from a specific web server; And processing a video telephone call from the personal computer transmitted from the web phone server, managing information and status of the subscriber using the video telephone terminal and the personal computer, and performing authentication and billing based on the subscriber information. A gatekeeper is provided.

An apparatus for providing a video telephone service between a personal computer and a mobile telephone terminal in a mobile telephone network according to another embodiment of the present invention is capable of assigning a mobile Internet protocol address and providing a video telephone service in a mobile telephone network capable of transmitting packet data. In the apparatus,

A video telephone terminal to which a video camera is attached and capable of making / receiving video calls through the mobile telephone network; A web phone server for relaying a video telephone call from a personal computer which has downloaded a predetermined client program from a specific web server; And processing a video telephone call from the personal computer transmitted from the web phone server, managing information and status of the subscriber using the video telephone terminal and the personal computer, and performing authentication and billing based on the subscriber information. A gatekeeper is provided.

On the other hand, in the mobile telephone network according to an embodiment of the present invention, the video telephone service providing method between the personal computer and the mobile telephone terminal, the mobile Internet protocol registration as the video telephone terminal in the mobile telephone network that can transmit packet data A first step of registering and authenticating a video telephone service for a video telephone terminal having completed protocol registration and a web phone server additionally installed in the mobile telephone network; A second step of downloading a predetermined client program to the personal computer as the personal computer connects to the web server and logs in; A third step of performing signaling processing related to call setup as the personal computer makes a video call call; And a fourth step of transmitting voice and video data between the personal computer on the calling side and the video telephone terminal on the called side as the call setup is completed.

Hereinafter, an apparatus and a method for providing a video telephone service between a personal computer and a mobile terminal in a mobile telephone network according to an embodiment of the present invention will be described with reference to the accompanying drawings.

1 is a network configuration diagram of an apparatus for providing a video telephone service between a personal computer and a mobile telephone terminal in a mobile telephone network according to an embodiment of the present invention. , 12); 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 which perform 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 transfer functions 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 the mobile telephone network 100 capable of transmitting packet data, and processes video telephone calls from the personal computer 42, and uses the video telephone terminals 10 and 12 and the personal computer 42. A gatekeeper 28 that manages information and status of subscribers and performs authentication and billing based on the subscriber information; A web phone server 30 additionally installed in the mobile telephone network 100 and performing video phone call processing in association with the gatekeeper 28; An element management system (EMS) 32 for accessing the gatekeeper 28 and other additional equipment to perform failure, performance, configuration, accounting, and security management functions of the corresponding equipment; A billing information management system (BDS) 34 for receiving and managing billing information from the gatekeeper 28 via the element management system 32 via the TCP / IP; A customer information management system coupled to the element management system 32 and managing information (e.g., subscriber number (telephone number, ID), mobile internet protocol address, etc.) of video telephony service subscribers from the gatekeeper 28 ( CDS) 36; Network management system (NMS) 38; And a web server 40 which downloads a web phone client program (Java Applet) to the personal computer 42.

Here, the video telephone terminals 10 and 12 use the same codec because the audio codec and the video codec of the terminals are the same so that unnecessary codec conversion is unnecessary.

The video phone terminals 10 and 12 support QCIF (176 × 144) or more, process at least 10 frames per second, support 256 colors or more, and video supports real color (color depth = 16 bits or more). A 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, which use an audio / 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 phone terminals 10 and 12 support mobile IP, and perform mobile IP registration and video phone service registration at power on of the terminal. The videophone terminals 10, 12 support version 3 of H.323 and use the same transmission rates for the forward and reverse directions. The video telephone terminals 10 and 12 receive one or more video channels for multipoint conferencing, in which case video mixing or switching is performed to show the video signal to the user. do.

On the other hand, the videophone terminals 10, 12 use H.245 simultaneous capabilities to indicate how many simultaneous video streams can be decoded, and register / unregister and re-register the terminal. The timer management related to this is applied in the same way as the mobile IP standard and supports the protocol stack to support the existing circuit call (voice call) and VOD service.

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 supports version 3 of H.323, receives the subscriber's mobile IP service subscriber information through the customer information management system 34, and stores and manages it in a separate subscriber database. It also manages additional service related information.

The gatekeeper 28 receives the personal computer 42 originating subscriber information from the web phone server 30 and temporarily stores and manages the call until the call is terminated. It includes the user ID and password used when connecting to a specific web site (n-Top web site in the present invention) through the server 40.

The gatekeeper 28 has an IP address and MSID (International Mobile Station Identity (IMSI) / IRM / MIN (Mobile Number for roaming between countries) assigned to the videophone terminals 10 and 12 after mobile IP registration. Number)) to manage binding information that maps its IP address and MSID when a registration is requested.

The gatekeeper 28 manages the state of the video telephone terminals 10 and 12 according to mobile IP registration and release after the video telephone terminals 10 and 12 register for the first time.

When the mobile IP registration is canceled due to an abnormal state of the video telephone terminals 10 and 12, but the deregistration request is not transmitted to the gatekeeper 28, the video telephone terminal has a new mobile IP address and requests for registration. The gatekeeper 28 updates the IP address field in the MIN and IP address mapping table, and responds with a Registration Conform (RCF) message.

The gatekeeper 28 is interoperable with other application servers to support IP-based additional services for the video telephone terminals 10 and 12 and manages additional service related parameters.

That is, the gatekeeper 28 has an address translation function, an admission control function, a bandwidth control function, a zone management function, and a call control signaling function. , Call Authorization, Call Accounting, Call Management, Supplementary Services, Directory Services.

The address translation function performs conversion between an alias address (for example, a MIN, an e-mail address, etc.) and a transport address, and the conversion operation is performed according to a conversion table updated using registration messages. Is performed.

The admission control function means performing an authentication operation for determining whether to grant network access using H.225.0 ARQ / ACF / ARJ messages.

The gatekeeper 28 supports H.225.0 ARQ / ACF / ARJ messages for the bandwidth control function. If the bandwidth control function is null, all requests that require bandwidth modification are accepted. It also controls the number of H.323 terminals that can access the network at the same time. Through H.225.0 signaling, gatekeeper 28 may reject the call request because of bandwidth limitations. If this bandwidth control function is null, all terminals are allowed access, and this bandwidth control function can be utilized for a specific service to ensure quality of service (QoS).

The gatekeeper 28 provides the above functions (address translation function, admission control function, bandwidth control function) only to terminals, MCUs, and gateways registered therein. This function is called a local management function.

In connection with the call control signaling function, the gatekeeper 28 may complete call signaling together with the videophone terminals 10 and 12, and may process call signaling by itself or use a videophone terminal ( 10 and 12 may arrange to directly connect a call signaling channel. In the embodiment of the present invention, it is assumed that the call signaling process is performed in the gatekeeper 28.

In connection with the call authentication function, the gatekeeper 28 may reject the call request from the specific videophone terminals 10 and 12 using H.225.0 signaling. Reasons for the refusal include restricting access to specific terminals or gateways, restricting access for a specific period of time, and the like.

In connection with the call charging function, the gatekeeper 28 transmits the information necessary for charging to the charging information management system 32 when the call ends.

In connection with the call management function, the gatekeeper 28 manages a list of ongoing H.323 calls. To support multipoint conferencing, the gatekeeper 28 receives an H.245 control channel from two terminals attending a point-to-point conference.

In relation to the additional service function, the gatekeeper 28 supports additional services (Call forward, Transfer, etc.) by H.450.

In relation to the directory service function, the gatekeeper 28 has a built-in database, which stores the necessary information in the user profile for the directory service that enables users to search each other.

On the other hand, the web phone server 30 converts a private protocol (non-standard H.323 protocol; protocol that enables basic call origination) used by the web phone client program mounted on the personal computer 42 to the H.323 protocol. Call signaling is performed between the video phone terminals 10 and 12 on the H.323 network and the web phone client mounted on the personal computer 42. That is, the web phone server 30 performs a gateway function on the H.323 network, and supports version 3 of H.323.

In other words, the web phone server 30 processes the non-standard H.323 protocol with the web phone client and processes the gatekeeper 28 and the H.323 protocol.

The web phone client downloaded to the personal computer 42 can control the sound card and the video card, and interlock with the web phone server 30 to control the incoming and outgoing signals by the non-standard H.323 protocol.

In addition, the downloading procedure of the web phone client program will be described. A user connects to an n-Top web server using an Internet explorer. For example, the location of the n-Top web server is www.n-top.com. After that, enter the pre-registered user ID in the login and password input window, and if you want to use Web VideoPhone in the web server main window after user authentication is completed, click the Web Video Phone icon to open the Web Video Phone Pad window. The web video phone pad window is displayed in HTML and contains logic to download the web phone client module (webphone.cab) in the HTML so that the user's personal The download to the computer 42 is performed.

On the other hand, as a method of mounting the web phone client module on the web server 40, the web phone client module is placed in an arbitrary directory of the web server 40 and the web phone client is displayed in "webphone.html" (web phone pad window). There is a way to link modules.

The web server 40 is an application that can make a video call and manages subscribers registered for a video call, shows corporate advertisements as necessary, and provides phone book management and other additional functions. do.

When the web server 40 uses the n-Top web server, the personal computer caller is authenticated by logging in to the n-Top web site once. Therefore, there is no need to manage the subscriber database separately, and the web phone client program is downloaded to the personal computer 42 to enable the video phone service on the personal computer 42.

The web phone client downloaded to the personal computer 42 via the web phone server 30 in the calling process in order to enable the billing processing at the gatekeeper 28 even in the case of the origination from the personal computer 42. The sender information is transmitted to the gatekeeper 28, and the gatekeeper 28 generates charging information based on the caller information. The caller information includes user ID and password information when the personal computer 42 logs in to the web server 40, that is, the n-Top web site.

On the other hand, the personal computer 42 is a personal computer on the public internet. In the embodiment of the present invention, the web server 40 is connected to a personal computer 42 on the general-purpose Internet, but may be a laptop or PDA connected to a non-image mobile terminal.

2 is a flowchart illustrating a video telephone service providing method between a personal computer and a mobile telephone terminal in a mobile telephone network according to an embodiment of the present invention.

First, when the power of the video telephone terminals 10 and 12 is turned on, mobile IP registration is performed with the mobile telephone network 100. In this case, the home agent 26 in the mobile telephone network 100 gives a mobile IP address to the video telephone terminals 10 and 12, and a packet in the packet area where the video telephone terminals 10 and 12 are currently located. Information of the data serving nodes 22 and 24 is also managed. Accordingly, the position of the video telephone terminals 10 and 12 assigned the mobile IP address is continuously tracked.

The web phone server 30 transmits a registration request message (RRQ) to the gatekeeper 28 through the H.323 protocol so as to recognize each other in the inter-system network with the gatekeeper 28.

The gatekeeper 28 receiving the registration request message RRQ responds by sending a registration confirmation message (RCF) to the web phone server 30 through an authentication procedure.

The video telephone terminals 10 and 12 assigned the mobile IP address register the video telephone 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 is set in advance in the video telephone terminals 10 and 12. The video telephone terminals 10 and 12 transmit a registration request message (RRQ) to the gatekeeper 28. The mobile phone terminal 10 and 12 is assigned a mobile phone number (MIN) (or ID) of the terminal. IP address information will be sent.

The gatekeeper 28, which receives this, stores an alias address MIN and an IP address of the video telephone terminals 10 and 12 in a table, and then registers a registration confirmation message (RCF). Send to phone terminals 10 and 12 to allow registration. Thereafter, the gatekeeper 28 manages the state of the video telephone terminals 10 and 12 based on the registered information. In the embodiment of the present invention, the periodic registration procedure of the mobile IP standard is applied as it is so that the state management of the video telephone terminals 10 and 12 may 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 or the like, the allocated mobile IP is released and the gatekeeper 28 is released.

The PC user logs into the web server 40 using his personal computer (i.e., the calling personal computer 42).

Accordingly, the web server 40 authenticates the PC user based on the inputted user ID and password, and then downloads the web phone client program necessary for the video call to the calling party's personal computer 42.

The PC user attempts to make a video call through a web phone client downloaded to his personal computer 42. At this time, a non-standard H.323 protocol is used between the personal computer 42 and the web phone server 30.

When the PC user attempts to make a video call using the personal computer 42, that is, when dialing the telephone number MIN of the called videophone terminal (e.g., 10), the web phone server 30 receives an acceptance request message ( A gatekeeper-routed call signaling is set in an Admission Request (ARQ) and transmitted to the gatekeeper 28.

The gatekeeper 28 locates in the managed E.164 (MIN) to IP address mapping table and transmits an admission confirmation message (ACF) to the web phone server 30 when routing is possible.

Thereafter, the web phone server 30 transmits the H.225 call signaling setup message to the called videophone terminal 10 via the gatekeeper 28. Accordingly, the called party's video telephone terminal 10 responds by sending an H.225 Call Proceeding message to the web phone server 30 via the gatekeeper 28.

On the other hand, the called-party video telephone terminal 10 is registered with the gatekeeper 28, but has not yet been accepted (admission) state, so the gatekeeper 28 receives an Admission Request message (ARQ). send.

The gatekeeper 28 transmits an acceptance confirmation message (ACF) to the called party's video telephone terminal 10 to allow the terminal 10 to accept.

Accordingly, the called party video phone terminal 10 sends an H.225 Alerting message to the web phone server 30, and then the called party video phone terminal 10 sends the web phone server 30 to the web phone server 30. Send an H.225 Connect message to indicate that the call has been established.

Thus, the web phone server 30 and the called videophone terminal 10 are connected to the real-time transport protocol (RTP) and real-time via an H.245 control channel signaling message provided by the gatekeeper 28. Set for the Real-time Transport Control Protocol (RTCP) address.

As the web phone server 30 transmits a channel message to the calling personal computer 42 via the non-standard H.323 protocol, a video call between the calling personal computer 42 and the called video telephone terminal 10 is performed. The call is made. At this time, the user traffic is communicated through the home agent to which the called party's video telephone terminal 10 belongs and the packet data serving node. That is, the audio and video data in the calling personal computer 42 is transmitted to the called videophone terminal 10 via the called home agent and the called packet data serving node. The voice and video data of the called party video telephone terminal 10 is transmitted to the calling party personal computer 42 via the called party packet data serving node.

Then, when the video telephone call between the calling party's personal computer 42 and the called party's video telephone terminal 10 is terminated, the gatekeeper 28 generates billing information including talk time information and bills through TCP / IP. To the information management system 34.

As described in detail above, according to the present invention, a PC user on the Internet has a mobile phone number without having to install a separate program through a web site connection and without knowing the IP address of the mobile video telephone terminal. With high speed internet, many people will be able to provide more active and convenient service at home as well as at work.

In addition, by adding a gatekeeper and a web phone server to the mobile telephone network, it is possible to implement a service without changing the functions or specifications of the systems of the existing mobile telephone network.

In addition, by using the mobile IP function to ensure the mobility of the video phone, it is possible to ensure a limited quality of service through the control of traffic in the network.

On the other hand, it is easy to implement by using H.323 protocol, which is one of the IP-based international standard for video telephony in wired network, and users use called number in the same way as mobile phone in existing circuit network. You can make outgoing calls and make calls.

In addition, by applying the same method as the re-registration scenario according to the mobile IP standard, there is an advantage to prevent the use of unnecessary radio resources by maintaining a dormant state in the absence of user traffic.

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 (17)

delete delete A video telephone service providing apparatus in a mobile telephone network capable of allocating a mobile Internet protocol address and transmitting packet data, A video telephone terminal to which a video camera is attached and capable of making / receiving video calls through the mobile telephone network; A personal computer which downloads a web phone client program from a specific web server and attempts a video phone call to the video phone terminal through the web phone client program; A web phone server for relaying a message for call signaling in response to a video call call attempt from the personal computer; And A gate for processing video telephone calls from the personal computer delivered from the web phone server, managing information and status of the subscriber using the video telephone terminal and the personal computer, and performing authentication and billing based on the subscriber information. An apparatus for providing a video telephone service between a personal computer and a mobile telephone terminal in a mobile telephone network, comprising a keeper. The method of claim 3, wherein The video telephone terminal includes a mobile internet protocol and an H.323 protocol stack, and the mobile telephone network registers a mobile internet protocol for the video telephone terminal when the video telephone terminal is powered on. Apparatus for providing a video call service between a personal computer and a mobile phone terminal. The method of claim 3, wherein The gatekeeper receives the registration request message from the web phone server and the mobile phone number of the video telephone terminal to which the mobile Internet protocol address has been assigned by the mobile internet protocol registration, and the mobile phone based on the subscriber information. And a video telephone service registration for the video telephone terminal and the web phone server. The method of claim 3, wherein The gatekeeper provides an H.245 control channel signaling message to the web phone server and the video phone terminal at the called party when the call setup between the personal computer at the calling party and the video phone terminal at the called party is completed. Providing a channel message to the calling personal computer through a non-standard H.323 protocol, thereby establishing a communication path between the calling personal computer and the called video telephone terminal. Apparatus for providing video phone service between a computer and a mobile phone terminal. The method of claim 3, wherein When the video telephone terminal is the called party and the personal computer is the calling party, the voice and video data of the calling personal computer is the called party via the called home agent and the called party packet data serving node. Apparatus for providing a video telephone service between a personal computer and a mobile telephone terminal in a mobile telephone network, characterized in that transmitted to the network. The method of claim 3, wherein When the video telephone terminal is the called party and the personal computer is the calling party, voice and video data of the called video telephone terminal are transmitted to the calling personal computer through the called party's packet data serving node. An apparatus for providing video telephone service between a personal computer and a mobile telephone terminal in a mobile telephone network. As the video telephone terminal registers the mobile internet protocol in the mobile telephone network capable of transmitting packet data, the video telephone service registration and authentication is performed for the video telephone terminal that has completed the mobile internet protocol registration and the web phone server additionally installed in the mobile telephone network. The first process of doing; A second step in which a personal computer accesses a web server and downloads a web phone client program for a video call through a login; A third step of performing a video call call using a web phone client program in the personal computer; A fourth step of performing signaling processing related to call setup between the web phone server and the gatekeeper according to the video telephone call origination of the personal computer; And And a fifth process of exchanging voice and video data between the calling personal computer and the called video telephone terminal as the call setup is completed. How to provide video calling service. The method of claim 9, The mobile Internet protocol registration of the video telephone terminal is performed by a home agent of the mobile telephone network as the video telephone terminal is powered on. delete The method of claim 9, The gatekeeper receives the registration request message from the web phone server and the mobile phone number of the video telephone terminal to which the mobile Internet protocol address has been assigned by the mobile internet protocol registration, and the mobile phone based on the subscriber information. And a video telephone service registration for the video telephone terminal and the web phone server. The method of claim 9, In the first process, when the video telephone terminal re-registers the mobile internet protocol with the mobile telephone network, the gatekeeper additionally provided to the mobile telephone network also performs the mobile internet protocol re-registration for the video telephone terminal. A video telephone service providing method between a personal computer and a mobile telephone terminal in a mobile telephone network. The method of claim 9, In the fifth step, the web phone allocates the H.245 control channel signaling message allocated by the gatekeeper additionally provided to the mobile telephone network as the call setup between the personal computer at the calling party and the video telephone terminal at the called party is completed. And a web message server providing a channel message to the personal computer as the calling party through a non-standard H.323 protocol, so that the personal computer as the calling party and the called party as the video phone terminal are provided. A video telephone service providing method between a personal computer and a mobile telephone terminal in a mobile telephone network, characterized by establishing a call path between the telephone terminals. The method of claim 9, The voice and video data of the calling personal computer are transmitted to the video telephone terminal of the called party via the called home agent and the called packet data serving node. Method of providing video telephone service between telephone terminals. The method of claim 9, The voice and video data of the called videophone terminal are transmitted to the called personal computer through the called packet data serving node, and the videophone service between the personal computer and the mobile telephone terminal in the mobile telephone network. How to Provide. The method of claim 9, As the videophone call between the personal computer of the calling party and the videophone terminal of the called party is terminated, a process of generating billing information from the gatekeeper additionally provided to the mobile telephone network and transmitting the billing information to the billing information system of the corresponding mobile telephone network is further provided. A video telephone service providing method between a personal computer and a mobile telephone terminal in a mobile telephone network.