KR20050053950A - Method of color letter-ring service in synchronous wireless telecommunication system - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to an outgoing video transmission service method in a synchronous mobile communication system and a computer readable recording medium having recorded thereon a program for realizing the method.

2. The technical problem to be solved by the invention

In particular, when outdialing a call in a synchronous mobile communication system (CDMA-2000), a still image, a video, and the like, which are previously set together with the transmission of the music preset by the caller or independently, are displayed on the receiver terminal screen. An image transmission service method for transmission and a computer-readable recording medium having recorded thereon a program for realizing the method.

3. Summary of the Solution of the Invention

The present invention provides an outgoing video service method in a synchronous mobile communication system, comprising: an image setting step of presetting an image to be transmitted to a called terminal upon outdialing for an outgoing video transmission service; A service subscription authentication and channel assignment step of, upon outdialing a call at the originating terminal, recognizing that the calling exchanger is subscribed to the video transmission service and allocating a simultaneous voice and data transmission channel between the called terminal and the synchronous network; And transmitting a video set by a caller subscribed to an outgoing video transmission service in the synchronous network to the called terminal through the simultaneous audio and data transmission channel.

4. Important uses of the invention

The present invention is used for a synchronous mobile communication system.

Description

Outgoing video transmission service method in synchronous mobile communication system {Method of color letter-ring service in synchronous wireless telecommunication system}

The present invention relates to an outgoing video transmission service method in a synchronous mobile communication system and a computer-readable recording medium recording a program for realizing the method. In particular, 3GPP2 (3rd Generation Partnership Projects-2) IMT-2000 ( In the next generation mobile communication system of synchronous method such as International Mobile Telecommunication (CDMA-2000) or Code Division Multiple Access (CDMA-2000), when the call is outdialing, the preset picture, avatar, still picture, video, etc. It is to transmit (color letter-ring service) to the screen of the receiving terminal.

In the current mobile communication method, a specific sound set in the reception terminal itself or a specific character (CNAP: Call Name Presentation) can be expressed. In fact, international standards may use a specific sound generated by the network, but most operators and terminal manufacturers set the received sound at the terminal itself and commercialize it.

However, most current mobile communication terminals have simple multimedia functions, and all future terminals have video on demand (VOD) and video telephony functions that have MPEG-4 (Moving Picture Expert Group-4) functions. will be.

Nevertheless, in the conventional mobile communication network, in particular, due to the size problem of the video, it was not possible to transmit the video during outdialing, and moreover, the voice-oriented circuit network and the packet data-oriented packet network were independent of each other. Since it was in a form of operation, it could not satisfy the needs of subscribers (particularly, callers) of multimedia services (particularly image color ring services).

According to the trend of adding and reinforcing multimedia functions of mobile communication terminals, if a picture, avatar, still image or video can be transmitted on outdialing on the terminal screen capable of displaying color simultaneously with the dial tone of the terminal, the caller may set By sending images (pictures, avatars, still images, or videos) to the recipients (recipients), the recipients (recipients) who receive their calls can be notified in advance, and their own characters character has the advantage of being able to represent. Therefore, such a method is urgently required in the current technical field.

The present invention has been proposed to solve the above problems, and particularly, when the call is outdialing in a synchronous mobile communication system (CDMA-2000), the caller preset music is transmitted together or independently. It is an object of the present invention to provide a video transmission service method for transmitting a preset still picture, a moving picture, and the like to a destination terminal screen, and a computer readable recording medium storing a program for realizing the method.

The present invention for achieving the above object, in the outgoing video service method in a synchronous mobile communication system, for the outgoing video transmission service, to pre-set the image to be transmitted to the destination terminal when the call (outdialing) from the caller Image setting step; A service subscription authentication and channel assignment step of, upon outdialing a call at the originating terminal, recognizing that the calling exchanger is subscribed to the video transmission service and allocating a simultaneous voice and data transmission channel between the called terminal and the synchronous network; And a video transmission step of transmitting a corresponding video preset by a caller subscribed to an outgoing video transmission service in the synchronous network to the called terminal through the simultaneous voice and data transmission channel.

In addition, the present invention is characterized in that it further comprises a sound source transmission step of transmitting the music preset by the caller with the video to the called terminal when outdialing.

The present invention may further include a call establishment step of arbitrating a call between the calling terminal and the called terminal through a known call processing procedure after performing the video transmitting step.

On the other hand, the present invention for the outgoing video transmission service, the mobile communication system having a processor, for the outgoing video transmission service, for the outgoing video outgoing call (outdialing) video to be transmitted to the destination terminal from the caller in advance Setting function; A service subscription authentication and channel allocation function for allocating voice and data simultaneous transmission channels between the called terminal and a synchronous network when the calling exchange recognizes that the calling party has subscribed to the video transmission service when an outdialing is made at the calling terminal; And a program for realizing a video transmission function of transmitting a corresponding video set by a caller subscribed to an outgoing video transmission service in the synchronous network to the called terminal through the simultaneous audio and data transmission channel. Provides a record medium that can be.

In addition, the present invention provides a computer-readable recording medium recording a program for further realizing a sound source transmission function for transmitting the music preset by the caller to the destination terminal when the call is outdialing. do.

The present invention also provides a computer-readable recording medium having recorded thereon a program for further realizing a call establishment function that mediates a call between the calling terminal and the called terminal through a known call processing procedure after performing the video transmission function. to provide.

In the existing mobile communication network, due to the size of the video, it is difficult to transmit video when outdialing. As the mobile communication network evolves, CDMA-2000 can transmit SVD (Simultaneous Voice and Data) and 3GPP (3rd Generation). Partnership Projects) In UMTS (Universal Mobile Telecommunication Service) or W-CDMA (Wideband CDMA), the transmission speed is increased so that a video can be transmitted during outdialing.

Therefore, in the present invention, a voice-oriented circuit network and a packet data-oriented packet network are interworked with each other, and a specific server (video transmission service server) is established in a packet network to provide a caller with a service subscription. When calling, it sends video (picture, avatar, still image, video) to the terminal screen.

Although W-CDMA has a mutual interface between a circuit network and a packet network, it can be more easily implemented, but since a separate interface definition and a server managing subscribers and contents have to be developed, In the invention, the discussion is left out.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an exemplary configuration of a mobile communication system of a synchronous method for an outgoing video transmission service to which the present invention is applied.

Incoming and outgoing mobile terminals (MSs) 11 and 18 are mobile communication terminals such as PDAs (Personal Digital Assistants), laptops, cellular phones or PCS phones, which the user can carry and communicate with, and IMT-2000. It includes next-generation mobile communication terminals such as International Mobile Telecommunication (UMTS), Universal Mobile Telecommunication Service (UMTS), and the like, and particularly means a synchronous mobile communication terminal capable of displaying an image simultaneously with an incoming call or independently.

In particular, the outgoing video transmission service (color letter-ring service) is a service that transmits a predetermined video to the called party's terminal (terminal capable of displaying the video) when the caller (outdialing) of the caller subscribed to the service. The communication terminal 11 does not necessarily need to be a terminal capable of displaying an image, and is not limited to a mobile communication terminal, and may be a terminal capable of transmitting such as a general wired / wireless telephone or a PDA. Therefore, the calling terminal should be interpreted as a concept including the same. The destination terminal 18 also reveals in advance that it is not limited to the type as long as the video display is possible.

In the following, a mobile communication terminal is used as an example of an incoming / outgoing call terminal (11, 18) as a preferred embodiment.

The mobile communication terminal (MS) 11, 18 may always use the same IP address unless the wireless Internet connection is terminated using the mobile Internet Protocol (IP). That is, even if the mobile communication terminal (MS) 11, 18 moves to another Packet Data Serving Node (PDSN) 16, the Home Agent (HA) (not shown) It is possible to always transmit data to the mobile communication terminal (MS) 11,18 with the current PDSN information. However, in the present invention, the terminal (MS) 11, 18 does not necessarily have a mobile IP, and if the IP is disconnected when the mobile terminal is moved, it may not be transmitted when the image is transmitted by the retransmission method or the retransmission is impossible. have.

For reference, when providing a mobile IP service, the packet data service node (PDSN) 16 performs a foreign agent (FA) function and is a home existing in a home network of a mobile communication terminal (MS) IP address. The agent HA performs functions such as location information management and tunnel setup for the mobile IP.

In this case, the home agent HA receives the registration request message from the MS 11 and 18, and then uses the IP address when a method of statically assigning the IP address is used. If a method of dynamically assigning an IP address is used, an IP address is allocated and a registration reply message is transmitted to allow this. When the mobile communication terminal (MS) 11, 18 changes the PDSN area, it is always informed to the home agent HA.

The base station-related apparatus 12, such as a base transceiver system (BTS) / base station controller (BSC) / packet controller (PCF), includes a packet with a mobile communication terminal (MS) 11,18. It is responsible for data transmission and buffering between the data service nodes (PDSN) 16, and also when the data is transmitted to the mobile communication terminal (MS) (11, 18) in the IP network. Looking at each function in more detail as follows.

The base station controller (BSC) accepts the functions of the existing exchange (MSC) 13 as it is, controls and manages one or more base stations (BTS), and performs traffic and signaling methods related to call processing, mobility management, and mobile terminal management. do.

The packet controller (PCF) may exist inside the base station controller (BSC) system or may be implemented as a separate system. The packet controller (PCF) may include an IP protocol processing function and a packet data processing function for processing data packets. For this purpose, an "RP Interface", that is, an interface between a radio access network (RAN) and a packet data network is used, and a virtual link connection and user data for data transmission on the RP interface. Tunneling is provided through GRE protocol encapsulation and decapsulation of GRE protocol. Here, the RP interface is a radio access network (RAN) and a packet data network for connecting data of mobile communication terminals (MSs) 11 and 18 transmitted from a radio access network (RAN) to a packet data service node (PDSN) 16. It is a connection method between (PDN). In addition, the packet controller (PCF) performs a handoff processing function, a packet data charging information transfer function, a packet data buffering function, etc. that occur on the RP interface. In addition, the packet controller (PCF) transmits link layer packets to be transmitted to the mobile communication terminals (MSs) 11 and 18 received from the packet data service node (PDSN) 16 over an air interface. It performs the buffer function and the packet segmentation function to be transmitted.

The packet data service node (PDSN) 16 is a service node of an IP-based packet network that provides a high-speed packet data service. The packet data service node (PDSN) 16 performs mobility provision and various data related protocol processing functions of a packet data service. In addition, IKE (Internet Key Exchange) RADIUS processing functions (key, SPI distribution, billing function), mobile IP function, IP Security processing functions, etc. are performed. In addition, the packet data service node (PDSN) 16 performs PPP / GRE protocol processing to process packets received from the packet controller (PCF), and the mobile communication terminal (MS) 11,18 and PPP (Point). -to-Point Protocol) and performs the function of receiving the subscriber's ID and password and authenticating it to the mobile subscriber management server (15).

The Home Location Register (HLR) 14 has information such as subscriber information, IP priority, and resource and authority usage for interdomain services.

The mobile subscriber management server 15 is responsible for AAA (Authentication, Authorization, Accounting) functions, that is, subscriber authentication, authorization verification, billing, and the like, and authentication request and billing messages requested from the packet data service node (PDSN) 16. Serves to handle and so on.

Then, the outgoing video transmission service (color letter-ring service) in the synchronous mobile communication system according to the present invention will be described.

For the color letter-ring service of the present invention, the exchange 13 provides a voice service between callers in the synchronous mobile communication system (CDMA-2000), and the home location register 14 Mobile phone subscriber location information and additional service information are maintained.

On the other hand, for a color letter-ring service of the present invention, the packet data service node 16 provides a data service in a synchronous mobile communication system (CDMA-2000), and provides a video transmission service server ( 17) provides a color letter-ring service of the present invention.

On the other hand, for the color letter-ring service of the present invention, the content providing server 20 is a web server (WEB sever) 21 that allows the Internet to select the content to be used for the outgoing video transmission service WAP (Wireless Application Protocol) server (22) to select the content to be used for the outgoing video transmission service on the wireless data, an automatic response device for selecting the content to be used for the outgoing video transmission service on the wired ARS ( A user (that is, a caller) connected through the ARS 23 can access the video transmission service server 17 to select content to be displayed on the screen of the incoming mobile communication terminal 18 when the caller makes a call. Make sure

Therefore, a caller who wants to transmit a still image, a video, or the like, which is set at the time of outdialing, to a receiving mobile communication terminal (not limited to the above, and may be a terminal capable of displaying images) screen 18 A user terminal 19 such as a communication terminal 11 or a PC, a PDA, a general wired or wireless telephone, or the like connects to the video transmission service server 17 via a synchronous mobile communication network (CDMA-2000) or the Internet. The still image, the video, etc. to be transmitted to the mobile communication terminal 18 of the called party receiving the call can be set in advance. In this case, various methods using the web server 21, a WAP server 22, an automatic answering device (ARS) 23, and the like may exist as described above.

The color letter-ring service of the present invention is based on the condition that Simultaneous Voice & Data (SVD) is possible in a wireless section. That is, it must have a structure capable of transmitting data and voice simultaneously in the wireless section. This scheme is defined as VP1, VP2, etc. in the CDMA-2000 wireless protocol.

Here, the SVD function is a technology for improving the data-only 1x EV-DO so that voice and data can be used simultaneously. The VP mode is a structure in which voice and packet data can be simultaneously transmitted.

The subject that determines the transmission mode of the radio bearer terminal such as the VP mode is made in the base station and the mobile communication terminals 11 and 18 in the base station related apparatus 12. In the present invention, the VP mode is mainly determined at the base station, and this state must be present in the control information at the interface between the base station and the core network.

If the outgoing mobile communication terminal 11 calls the incoming mobile communication terminal 18 via the switch 13, the switch 13 retrieves the terminal capability from the home location register 14 (subscriber location). Information and additional service subscription confirmation), and then inform the base station of the VP mode (method of providing SVD). Then, the base station recognizes that the outgoing video transmission service is outgoing, paging to the terminating mobile communication terminal 18, and at the same time allocates its communication line through the interface with the packet data service node 16. do. This process is defined in 3GPP2.

However, for the color letter-ring service of the present invention, the exchange 13 receives a response from the base station and then receives the call through the home location register 14 (or directly at the exchange 13). Interworking with the image transmission service server 17 for processing the image. Then, the video transmission service server 17 transmits the already set video (calling subscriber designated video) to the packet data service node 16, and the packet data service node 16 sessions to the base station according to network synchronization. form a session.

Finally, the base station is responsible for outdialing sounds and other call processing functions generated from the switch 13, and the packet data service node 16 receives the video information (calling subscriber) transmitted from the video transmission service server 17. Transfers the designated video data) to the called mobile communication terminal 18.

At this time, the SVD data channel is allocated between the destination mobile communication terminal 18 and the packet data service node 16, and the video transmission service server 17 transmits the video data designated by the calling subscriber to the packet data service node 16. The packet data service node 16 transmits the video data designated by the calling subscriber to the destination mobile communication terminal 18 through the assigned SVD data channel.

The reason for using the SVD data channel between the packet data service node 16 and the terminating mobile communication terminal 18 during outdialing is that the size of video data is large when outdialing. This is because the control signal processed in 13) does not provide a message enough to send an image.

When outdialing a call to the terminating mobile communication terminal 18, a separate method must be defined in order to make outdialing with an image transmitted from a network. This is not defined in existing international standards, and can be defined in an Extended Channel Assignment Message (ECAM) that signals the beginning of an SVD and sets up a channel. In some cases, the mobile communication terminals 11 and 18 may be defined such that the SVD may be processed through service negotiation in a traffic state.

The terminating mobile communication terminal 18 recognizes a specific field of the ECAM and recognizes that an image is transmitted upon outdialing (calling from the caller's point of view), and activates an image decoder in advance. Then, when the call state, the incoming mobile communication terminal 18 may delete the received image and display the call state, or may have the received image until the end of the call. In some cases, the receiving mobile communication terminal 18 may store the received image in a memory and view it again or transmit it to another terminal through a multimedia messaging service (MMS).

VP mode, which enables SVD in CDMA-2000, uses a voice channel and a separate packet data channel simultaneously. VP mode 1 is a conventional voice-oriented channel, FCH (Fundamental Channel) and SCH (Supplemental Channel). ) Is used at the same time, signaling for controlling the SCH which is a dedicated channel of packet data refers to a method of performing the FCH.

On the other hand, VP mode 2 is a voice-oriented channel FCH (rate set 1, up to 9.6kbps can be transmitted and voice and data transmission) and packet data dedicated channel SCH (release 0, maximum DCCH (Dedicated Control Channel), a dedicated control signal processing dedicated channel that controls up to 153.6kbps). That is, the VP mode is determined according to which channel is used for signaling. In the present invention, both VP1 and VP2 are applicable.

The determination of the VP mode can be made by the base station and the mobile communication terminals 11 and 18. Since this is the resource management of the radio section, the final decision is made by the base station. When the VP mode is used, the mobile communication terminals 11 and 18 process multi-codes. That is, the mobile communication terminals 11 and 18 can process several Walsh codes to process various application services and a lot of data at the same time.

When the VP mode is determined at the base station, the SCH is allocated through an Extended Supplemental Channel Assignment Message (ESCAM) generated by the base station in the radio section. When the mobile communication terminals 11 and 18 request the SCH, a supplemental channel request message (SCRM) is used. According to the present invention, a call is made to an outgoing mobile communication terminal 18 by using a channel assignment message that allows the mobile communication terminals 11 and 18 to enter a traffic channel. Incoming video transmission is possible.

The message structure of the ECAM is as follows.

In the "additional record fields" of the ECAM message, detailed fields when assigning a traffic channel are as follows.

In the above, the video is sent together with an outdialing (reception from the caller's point of view) by filling a specific value in the reserved "reserved" field in the ECAM for allocating a traffic channel. Will be sent. That is, the reserved field is set as "1111111" or the like. Then, after receiving the ECAM, the receiving mobile communication terminal 18 prepares to decode the video.

On the other hand, after transmitting the ECAM, the base station allocates the SCH to the terminating mobile communication terminal 18 using a message such as ESCAM. In this case, the terminating mobile communication terminal 18 processes the FCH and the SCH simultaneously, and may receive an image through the SCH.

In VP mode 1, the FCH transmits a voice call and a control signal, and transmits packet data including an image through the SCH. This is because a lot of data cannot be transmitted by the conventional method through the FCH.

If a video is serviced as a background during a voice or data call, ESCAM for allocating an SCH defined in CDMA-2000 may be used. For reference, in this case, a specific field may be used in this message to distinguish it from the general SCH assignment as follows.

As described above, a background field may be transmitted and received during a call by setting a specific field such as SCRM_SEQ_NUM in ESCAM.

The video transmission service server 17, which transmits an image upon outdialing or provides a convenience device to a subscriber, has an IP connection and a home location register 14 (or an exchange 13) for connecting with a packet data service node 16. It should be connected with No.7 signal network for connecting)).

Basically, a subject that starts an outgoing image transmission service (color letter-ring service) is made through the home location register 14 in the exchange 13, and the contents thereof are transmitted to the image transmission service server 17 to transmit packet data. It is transmitted to the destination mobile communication terminal 18 through the service node 16.

The video displayed on the screen of the incoming mobile communication terminal 18 should be configured in a simple form, and a wavelet capable of a character-like image and a small form of natural image, such as the existing SIS service in Korea. If the terminating mobile communication terminal 18 has a function of MPEG-4, it can be played. Since each mobile communication terminal 11 and 18 has a function capable of processing an image and a difference in size and color of the LCD, the image transmission service server 17 must manage this.

In some cases, it is possible to stream to the mobile communication terminals 11 and 18 to transmit a natural video to the destination mobile communication terminal 18. That is, it can handle 3GPP standard multimedia formats such as MP4 file format or 3GP.

If up to the outdialing background sound of the terminal is set, the video transmission service server 17 may process audio together with the video. That is, when the call is outdialing, the caller transmits the preset music (sound color ring service) and transmits the preset still image, the video, etc. to the destination mobile communication terminal 18 (color letter-). ring service). In particular, independent of a preset sound color ring service, a preset still image, a moving picture, and the like may be transmitted to a screen of the incoming mobile communication terminal 18.

In order to transmit the background image to the SCH, a few preambles should be used before receiving the multimedia file format, and the length thereof may vary depending on the operating state. That is, a 386 bit "0" may be used, and then decoded or displayed in a multimedia file or a file format.

If the mobile communication terminal (11,18) is formed even in the transport layer (transmission control protocol (TCP) (or UDP (User Datagram Protocol)), such as the multimedia using the Real-Time Transport Protocol (RTP) Can be transmitted.

The present invention requires a slight complement of the network of the base station and the exchange 13, the packet data service node 16, and the mobile communication terminals 11 and 18, and can service the network and the terminal without great complement.

In addition, a service for diversifying a domestic terminal caller ID service (CNIP) is being activated, which can also be defined by the present invention, so that the sender's video is transmitted to the terminal screen of the called party or the voice or audio preset by the caller. audio may be transmitted to the terminating mobile communication terminal 18.

By further extending this, the terminal can transmit or disconnect the preset video and audio during a call by using a specific button during a call between callers, and thus, activation of the service is expected.

2 is a flowchart illustrating an outgoing video transmission service method according to the present invention.

For the color letter-ring service of the present invention, the content providing server 20 is a web server 21 that allows the Internet to select content to be used for the outgoing video transmission service, the outgoing video. Access via a WAP server 22 to select content to be used for the transmission service on the wireless data, and an answering machine 23 to select content to be used for the outgoing video transmission service on the wired ARS. Allows a user (i.e., the caller) to access the video transmission service server 17 so that the caller can select the content to be displayed on the screen of the terminating mobile terminal 18 when the caller makes a call, and the subsequent update Make it possible.

Therefore, a caller who wants to transmit a still image, a video, or the like, which has been set at the time of outdialing, to the screen of the incoming mobile communication terminal 18, has his own mobile communication terminal 11 or user terminal 19 such as a PC. Access to the video transmission service server 17 through a synchronous mobile communication network (CDMA-2000) or the Internet through a PDA, a general wired or wireless telephone, or the like, and transmit the call to the mobile communication terminal 18 of the called party. The still image and the moving image to be set may be set in advance, or the set image may be updated. At this time, there are various methods using a web server 21, a WAP server 22, an automatic answering device (ARS) 23, and the like, as described above.

First, for a color letter-ring service, a caller who wants to transmit a still image, a video, and the like, which is set at the time of outdialing, to a screen of the incoming mobile communication terminal 18 can move his / her own mobile phone. A user terminal 19 such as a communication terminal 11 or a PC, a PDA, a general wired or wireless telephone, or the like connects to the video transmission service server 17 via a synchronous mobile communication network (CDMA-2000) or the Internet. A still image, a video, and the like to be transmitted to the mobile communication terminal 18 of the called party are set in advance. At this time, it is apparent that various methods using the web server 21, the WAP server 22, the automatic response device (ARS) 23, and the like may exist as described above.

Then, when the calling mobile communication terminal 11 sends a call to the called mobile communication terminal 18 (201, 202), the switch (MSC) queries the home location register 14 to confirm the subscriber location information and whether to subscribe to the additional service In step 203, the caller recognizes that the caller has subscribed to the outgoing video transmission service (204), and requests the base station to allocate an SVD data channel (205). Then, the base station transmits the SVD data channel allocation request message to the terminating mobile communication terminal 18 (206), and allocates the SVD data channel through the interface with the packet data service node 16 (207). Then, it notifies the destination exchange (MSC) that the SVD data channel allocation has been successfully performed (208).

Here, the SVD data channel allocation request message transmitted from the base station to the terminating mobile communication terminal 18 includes an image when an outdialing (incoming caller's position) is sent to a specific field of the ECAM that notifies the start of the SVD and sets the channel. Since the information is transmitted, the receiving mobile communication terminal 18 recognizes a specific field of the ECAM and recognizes that the video is transmitted when outdialing (incoming caller's position), and activates the image decoder in advance.

When the SVD data channel capable of sending video information to the destination mobile communication terminal 18 is allocated (208), the destination exchange (MSC) requests the video transmission service server 17 to transmit a video designated by the caller (209). In response, the video transmission service server 17 transmits a predetermined video (video designated by the calling subscriber) to the packet data service node 16 (210), and the packet data service node 16 performs network synchronization. In step 211, a session is established with the base station and the image information received from the image transmission service server 17 is transferred to the base station.

Thereafter, the base station transmits the video information (the video information designated by the calling subscriber) received from the packet data service node 16 to the called mobile communication terminal 18 (212). Then, the receiving mobile communication terminal 18 decodes the video information received from the base station (video information designated by the calling subscriber) and outputs it to the screen (213). Since the following procedure is the same as the general call call processing procedure, the description thereof will be omitted here.

In this case, when the caller pre-sets the music at the time of outdialing, the received image may be displayed at the same time as the image letter-ring service, and the corresponding music may be output together with the sound letter-ring service. . Of course, if the outdialing music is not set, only the video may be displayed on the screen independently, or the terminal itself may provide basic music when displaying the video. At this time, the image displayed on the screen of the incoming mobile terminal 18 may be configured to disappear automatically when the call state, or may be configured to continue to exist until the end of the call. In addition, it is obvious that the image transmitted during outdialing (incoming caller's position) may be stored in a memory so that it can be viewed again or transmitted to another terminal at any time.

The method of the present invention as described above may be implemented as a program and stored in a computer-readable recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.).

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible in the art without departing from the technical spirit of the present invention. It will be clear to those of ordinary knowledge.

According to the present invention as described above, when outdialing a call in a synchronous mobile communication system, not only the music preset by the caller but also independently set a still image, a video, and the like can be transmitted to the called terminal screen. Callers who receive their calls can be informed in advance of their appearance, and the caller can express his own unique character.

1 is an exemplary configuration of a mobile communication system of a synchronous method for an outgoing video transmission service to which the present invention is applied.

2 is a flow chart of an embodiment of an outgoing video transmission service method according to the present invention;

* Explanation of symbols on the main parts of the drawing

11,18: mobile communication terminal (MS) 12: base station related devices

13 switchboard (MSC) 15: mobile subscriber management server

16: packet data service node (PDSN) 17: video transmission service server

19: user terminal (PC) 20: content providing server (CP)

21: Web server 22: WAP server

23: Automatic Response Device (ARS)

Claims (10)

In the outgoing video service method in a synchronous mobile communication system, A video setting step of pre-setting an image to be transmitted to a called terminal when an outdialing is made from an originator for an outgoing video transmission service; A service subscription authentication and channel assignment step of, upon outdialing a call at the originating terminal, recognizing that the calling exchanger is subscribed to the video transmission service and allocating a simultaneous voice and data transmission channel between the called terminal and the synchronous network; And An image transmitting step of transmitting a predetermined video set by a caller subscribed to an outgoing video transmission service in the synchronous network to the called terminal through the simultaneous voice and data transmission channel. Outgoing video transmission service method in a synchronous mobile communication system comprising a. The method of claim 1, In the outdialing, a sound source transmitting step of transmitting the music preset by the caller together with the video to the called terminal. Outgoing video transmission service method in a synchronous mobile communication system further comprising. The method of claim 1, After performing the video transmission step, a call establishment step of arbitrating a call between the calling terminal and the called terminal through a known call processing procedure Outgoing video transmission service method in a synchronous mobile communication system further comprising. The method according to any one of claims 1 to 3, The called terminal, When outdialing (incoming caller's position), the video set by the caller is displayed together with the music preset by the caller, or only the video is displayed independently, or when the video is displayed, the terminal itself includes the basic music. An outgoing video transmission service method in a synchronous mobile communication system, characterized in that it is a mobile communication terminal capable of providing video and / or audio. The method of claim 4, wherein The video, Outgoing video transmission service method in a synchronous mobile communication system, characterized in that the character image, natural image, still image, including a background image. The method of claim 4, wherein In the synchronous network, Synchronization method movement, characterized in that the video is transmitted with the outdialing (incoming caller's position) to the destination mobile communication terminal using a channel assignment message to enter the incoming mobile communication terminal into the traffic channel Outgoing video transmission service method in communication system. The method of claim 6, The incoming mobile communication terminal, When the channel assignment message is received from the synchronous network, it is ready to decode the video, and when the call is outdialing (called from the caller's side), the video preset by the caller with the music preset by the caller , Or to display only the video independently, or to provide the basic music in the terminal itself when the video is displayed, to automatically disappear the video displayed on the screen when the call state, or to continue to exist until the end of the call, call Outgoing video transmission service method in a synchronous mobile communication system, characterized in that the video stored in the (outdialing) (incoming caller's position). In a synchronous mobile communication system having a processor for an outgoing video transmission service, For an outgoing video transmission service, a video setting function for setting a video to be transmitted to the called terminal from the caller when outdialing; A service subscription authentication and channel allocation function for allocating voice and data simultaneous transmission channels between the called terminal and a synchronous network when the calling exchange recognizes that the calling party has subscribed to the video transmission service when an outdialing is made at the calling terminal; And An image transmission function for transmitting a predetermined video set by a caller subscribed to an outgoing video transmission service in the synchronous network to the called terminal through the simultaneous voice and data transmission channel. A computer-readable recording medium having recorded thereon a program for realizing this. The method of claim 8, When the call is outdialing, a sound source transmission function of transmitting the music preset by the caller together with the video to the called terminal. A computer-readable recording medium that records a program for further realization. The method of claim 8, After performing the video transmission function, a call establishment function that mediates a call between the calling terminal and the called terminal through a known call processing procedure. A computer-readable recording medium that records a program for further realization.