KR20020035666A - IMT2000 Telecommunication System With Video Gateway and Operating Method Thereof - Google Patents

Abstract

PURPOSE: An IMT-2000 communication system having a video gateway and a method for operating the same are provided to install a video gateway to convert variously manufactured Internet video contents into video data suitable for IMT-2000 terminals in an IMT-2000 communication system network. CONSTITUTION: An IMT-2000 communication system(20) consists of a base station(21), a base station controller(22), an IMT-2000 switching center(23), a PDSN(Packet Data Service Node)(24), a video gateway(25), and a PDGN(Packet Data Gateway Node)(26). The base station(21) provides a wireless communication line to an IMT-2000 terminal(10). The base station controller(22), controlling the IMT-2000 communication system(20), executes control processing to provide a communication channel to the IMT-2000 terminal(10). The PDSN(24) executes a PPP connection function in order to allocate an IP address and to execute data communication with the Internet when the IMT-2000 terminal(10) accesses a data call. The video gateway(25) is composed of a gateway module, a proxy server, and a database. The PDGN(26) executes a home management function for IP addresses and provides mobility between PDSN coverages.

Description

IMT2000 Telecommunication System With Video Gateway And Operating Method Thereof}

The present invention relates to an IMT2000 communication system having a video gateway. More particularly, the present invention relates to an IMT2000 communication system network which converts Internet video content produced in various forms into video data suitable for an IMT2000 terminal. The present invention relates to an IMT2000 communication system having a video gateway capable of providing Internet video contents produced to the user of the IMT2000 terminal, and a method of operating the same.

Currently, mobile communication services such as cellular phones and personal mobile communication (PCS), which are mainly voice services, are gradually being developed as IMT2000 services supporting multimedia personal communication such as high speed data, packets, and video.

The International Mobile Telecommunication 2000 (IMT2000) is a next-generation mobile communication terminal adopting the standard technology proposed by ITU-T study group 11 under ITU, and refers to a crystal of a communication service using satellites.

The IMT2000 is characterized in that it can provide services such as voice call, telex, wireless call, and e-mail in any region of the world.

Conventional mobile communication services have had to use large and heavy terminals to receive weak transmission / reception signals within a limited range, but IMT2000 terminals can freely perform two-way multimedia communication anywhere in the world through the handheld terminal.

On the other hand, various video contents provided through the Internet, for example, video data such as Video On Demand (VOD), ASF files of Windows Media Player, RM files of Real Media Player and micro It is divided into a flash file of a media player and is manufactured and processed. In order to watch the video content, the Internet user can watch through an operation program suitable for the corresponding player.

In order to provide video contents produced in various forms based on the Internet to the users of the IMT2000 terminal, a conversion program suitable for the video contents is installed in a communication system network, and the converted image data is stored in a database or the like. By providing a separate device for converting the image data provided to the inside of the communication terminal or the user can watch the video content produced based on the Internet.

In addition, in order to convert the video contents of the existing Internet to ISO MPEG4 for IMT2000, an initial enormous cost is charged, and in order to perform video on demand (VOD) service on an IMT2000 terminal, it must follow ISO / IEC 14496 (ISO MPEG4) standard. do.

However, the video of the ISO MPEG4 standard has a very poor service infrastructure, poor development and distribution of authoring tools related to service, encoding, and editing, and insufficient expansion of service providers.

The present invention was created to solve the above problems, by installing a video gateway in the IMT2000 communication system network for converting Internet video content produced in various forms into video data suitable for the IMT2000 terminal, the Internet produced in various forms An object of the present invention is to provide an IMT2000 communication system having a video gateway capable of providing image contents to IMT2000 terminal users and an operation method thereof.

1 is a block diagram schematically showing the configuration of an IMT2000 communication system having a video gateway according to the present invention;

2 is a block diagram schematically showing the configuration of a video gateway according to the present invention;

3 is a signal flow diagram illustrating a method of operating an IMT2000 communication system having a video gateway according to the present invention;

♣ Explanation of symbols for main part of drawing ♣

10: IMT2000 terminal 20: IMT2000 communication system

21: base station 22: base station controller

23: exchange center 24: packet data service node

25: video gateway 26: packet data gateway node

30: Internet 40: Internet Information Provider

The present invention provides an IMT2000 terminal for receiving services such as voice telephone, telex, wireless calling, e-mail and internet surfing while the user moves to achieve the above object; An IMT2000 communication system including a video gateway for converting Internet-based video on demand into ISO MPEG4, which is a data format suitable for the IMT2000 terminal, and converting a transmission rate according to a corresponding video data size; The Internet, which is a network for transmitting and receiving data via communication at a remote location; And a plurality of Internet information providers which provide various information retrieval, e-commerce, cyber shopping, stock trading, banking, and video on demand (VOD) services to users of the IMT2000 terminal through the Internet. An IMT2000 communication system having a video gateway is provided.

According to another aspect of the present invention, if an IMT2000 terminal user requests image data such as video on demand through the Internet, the request signal is authorized to a proxy server of a video gateway; Transmitting, by the proxy server, a corresponding request signal to a web server of an Internet information provider which holds image data requested by a user through the Internet; The web server of the Internet information provider unit retrieves the format of the image data requested from the proxy server, and transmits the image data information such as the corresponding image data format, data size, paid information, and link information to the proxy server through the Internet. Wow; The proxy server of the video gateway receives the video data information and determines whether it is a data format suitable for the IMT2000 terminal that requested the video data. For example, the proxy server converts an ISO MPEG4 conversion request signal, which is a data format suitable for the IMT2000 terminal, to the gateway module. Transmitting and requesting transmission speeds (300k, 128k, 56k) according to the size of the corresponding video data; If the video data is paid information, the proxy server charges the information usage fee so that the billing data can be charged as the fee of the IMT2000 terminal. The proxy server transmits the link address where the video data is stored to the gateway module to transmit the video data. Performing a procedure of transmitting a message to an IMT2000 terminal; The gateway module making a request through the internet to a multimedia server of a link address in which corresponding video data exists based on a link address transmitted from a proxy server, a transmission rate conversion, and a data format conversion request signal; Transmitting, by the multimedia server having the corresponding video data, the requested video data to the gateway module of the video gateway through the Internet; And the gateway module converts the transmitted video data into a data format and a data transmission rate, and wirelessly transmits the corresponding video data to the IMT2000 terminal through the base station controller and the base station. To provide.

Hereinafter, an IMT2000 communication system having a video gateway and a method of operating the same will be described in detail with reference to the accompanying drawings.

1 is a block diagram schematically showing the configuration of an IMT2000 communication system having a video gateway according to the present invention, and FIG. 2 is a block diagram schematically showing the configuration of a video gateway according to the present invention. 3 is a signal flow diagram illustrating a method of operating an IMT2000 communication system having a video gateway according to the present invention.

Referring to this, in the IMT2000 communication system having a video gateway according to the present invention, as shown in FIG. 1, a user moves in any part of the world and receives a voice call, telex, radio call, e-mail and internet surfing. The IMT2000 terminal 10, the IMT2000 communication system 20 having a video gateway, the Internet 30 which is a network for transmitting and receiving data through remote communication, and the user of the IMT2000 terminal 10 through the Internet 30. It consists of a plurality of Internet Information Providers (IPs) 40 that provide services such as various information retrieval, e-commerce, cyber shopping, stock trading, banking and video on demand (VOD).

The IMT2000 communication system 20 controls the IMT2000 system 20 and the base station 21 that is wirelessly coupled to the IMT2000 terminal 10 and provides a wireless communication line to the corresponding IMT2000 terminal 10. A base station controller 22, an IMT2000 switching center 23, a packet data service node 24, a video gateway 25, and a packet data gateway node 26 that perform control processing for providing a communication channel to the IMT2000 terminal 20. It consists of).

The Packet Data Service Node (PDSN) 24 performs a PPP connection function for IP address allocation and data communication with the Internet network when a data call is connected to the IMT2000 terminal 20, and a PPP connection endpoint. During connection, IP address assignment and data transmission are performed statically.

The Packet Data Gateway Node (PDGN) 26 is an IP of the IMT2000 terminal 20 only when the packet data service node PDSN 24 has the IMT2000 terminal 10 at the base station 21 in the area. While address recognition and data communication with the Internet network are used, it is used to guarantee freedom of mobility in the wireless network and performs home management function for IP address to provide mobility between packet data service node (PDSN, 24) areas. do.

As shown in FIG. 2, the video gateway 25 converts video formats, converts video resolutions according to the size of video information representation of the terminal, and converts video data of high speed and low speed to a transmission rate suitable for IS-95C or IMT2000. And control the gateway module 251 and the video gateway 25 to insert logos, captions, and advertisement text into the image, and analyze the communication data between the IMT2000 terminal 10 and the web server to request the request. Extracts the URL of the video that is being made, redirects the video URL to the device, collects the device resolution and other information such as phone, PDA, modem, color, etc., converts the device information and video to the gateway module, plays, stops, and resumes. User of the proxy server 252 and the IMT2000 terminal 10 to perform command transfer, access number and access bandwidth management, and billing service interworking with the billing server. That stores the MS information and user information is made it consists of a database (253).

In the IMT2000 system having a video gateway according to the present invention having the above-described configuration, as shown in FIG. 3, when the user of the IMT2000 terminal 10 requests image data such as video on demand through the Internet 30, the request is made. A signal is applied to the proxy server 252 of the video gateway 25, and the proxy server 252 holds a web server of the Internet information provider 40 that holds image data requested by a user through the Internet 30. 41) to transmit the request signal.

The web server 41 of the Internet information provider 40 retrieves the format of the image data requested from the proxy server 252, and the image data information such as the corresponding image data format, data size, paid information, and link information. Is transmitted to the proxy server 252 via the Internet (30).

The proxy server 252 of the video gateway 25 receives the video data information and determines whether it is in a data format suitable for the IMT2000 terminal 10 that requested the video data, and for example, data suitable for the current IMT2000 terminal 10. In addition to transmitting the conversion request signal to the ISO MPEG4 format, the gateway module 251, the transmission speed 300k, 128k, and 56k is converted according to the video data size.

In addition, when the video data is paid information, the proxy server 252 charges the information usage fee so that the billing data can be charged as the fee of the IMT2000 terminal 10 and the link address where the video data is stored. The video data is transmitted to the gateway module 251 to transmit the corresponding video data to the IMT2000 terminal 10.

The gateway module 251 connects the Internet 30 to the multimedia server 42 of the link address where the corresponding video data exists based on the link address transmitted from the proxy server 252 and the transmission rate conversion and data format conversion request signals. Will be required.

The multimedia server 42 holding the corresponding video data transmits the requested video data to the gateway module 251 of the video gateway 25 through the Internet 30.

The gateway module 251 converts the transmitted image data into a data format and a data transmission speed, and wirelessly transmits the image data to the IMT2000 terminal 10 through the base station controller 22 and the base station 21.

Meanwhile, although the video gateway 25 is provided between the packet data service node 24 and the packet data gateway node 26, the video gateway 25 may be installed at an appropriate place such as the base station controller 22 and the base station 21 according to system construction. It may be.

Therefore, as described above, the IMT2000 system having a video gateway according to the present invention and its operation method converts various image data held by the Internet information provider unit by converting the image data format and data transmission rate suitable for the IMT2000 system. The user of the IMT2000 terminal can receive and view image data such as video on demand through the Internet.

In addition, the IMT2000 system having a video gateway and its operation method according to the present invention are not limited to the above embodiments, and various modifications and changes can be made without departing from the technical gist of the invention.

As described above, an IMT2000 system having a video gateway and a method of operating the same are provided in the IMT2000 communication system network by providing a video gateway for converting Internet video contents produced in various forms into image data suitable for an IMT2000 terminal. The user of the terminal has an effect of viewing the on-demand video image data produced in various forms through the Internet.

According to the present invention, a communication service provider can provide a lot of contents on the Internet to terminal users, and can induce a call volume due to various contents, and a content service provider can provide a single content database to the Internet and a wireless communication service provider. Cost savings, the terminal operator can reduce the terminal cost by supporting only one codec (ISO MPEG4), and the terminal user can use the same amount of content services as the Internet.

Claims (4)

An IMT2000 terminal 10 for receiving services such as voice call, telex, wireless call, e-mail and internet surfing while the user moves; An IMT2000 communication system (20) having a video gateway (25) for converting Internet-based video on demand into ISO MPEG4, which is a data format suitable for the IMT2000 terminal 10, and converting a transmission rate according to a corresponding video data size; The Internet 30, which is a network for transmitting and receiving data via remote communication; And A plurality of Internet information provider units that provide various information retrieval, e-commerce, cyber shopping, stock trading, banking, and video on demand (VOD) to users of the IMT2000 terminal 10 through the Internet 30 ( 40) IMT2000 communication system having a video gateway, characterized in that configured to include. The method of claim 1, The IMT2000 communication system 20 includes a base station 21 coupled to the IMT2000 terminal 10 wirelessly and providing a wireless communication line to the corresponding IMT2000 terminal 10; A base station controller 22 which controls the IMT2000 system 20 and provides a communication channel and performs a control process for each IMT2000 terminal 20; An exchange center 23 for managing the IMT2000 system as a whole; Performs PPP connection function for IP address allocation and data communication with internet network when accessing data call of IMT2000 terminal 20, and performs IP address assignment function and data transmission function for PPP connection to PPP connection endpoint A packet data service node 24; A video gateway 25 for converting a video format of Internet video data, a video resolution conversion according to a size of a video information representation of a terminal, and converting high speed and low speed video data into a data format conforming to IS-95C or IMT2000; And a packet data gateway node 26 which performs a home management function for the IP address of the IMT2000 terminal 10 and provides inter-regional mobility of the packet data service node 24. IMT2000 communication system. The method of claim 2, The video gateway 25 converts the video format of Internet video data, converts video resolution according to the size of the video information representation of the terminal, converts high speed and low speed video data to a transmission rate suitable for IS-95C or IMT2000, and displays a logo on the video. A gateway module 251 for performing subtitle and advertisement text insertion; In addition to controlling the video gateway 25, the communication data between the IMT2000 terminal 10 and the web server is analyzed to extract the URL of the video that is requested, and the video URL is redirected to the terminal. A proxy server 252 for collecting resolution and terminal information, converting and playing terminal information and video to the gateway module 251, transmitting a stop command, managing the number of users and access bandwidth, and processing a billing task; And a database (253) for storing user terminal information and user information of the IMT2000 terminal (10). When the user of the IMT2000 terminal 10 requests image data such as video on demand through the Internet 30, applying the request signal to the proxy server 252 of the video gateway 25; The proxy server 252 transmitting a corresponding request signal to a web server 41 of an internet information provider 40 which holds image data requested by a user through the internet 30; The web server 41 of the Internet information provider 40 retrieves the format of the image data requested from the proxy server 252, and the image data information such as the corresponding image data format, data size, paid information, and link information. Transmitting to the proxy server 252 via the Internet 30; The proxy server 252 of the video gateway 25 receives the video data information and determines whether it is in a data format suitable for the IMT2000 terminal 10 that requested the video data, and for example, data suitable for the current IMT2000 terminal 10. Transmitting a request for conversion to ISO MPEG4, which is a format, to the gateway module 251, and requesting a conversion rate according to a corresponding video data size; When the video data is paid information, the proxy server 252 charges the information usage fee so that the billing data can be charged as the fee of the IMT2000 terminal 10, and the gateway module stores the link address where the video data is stored. Performing a procedure of transmitting the image data to the IMT2000 terminal 10 by transmitting the image data to the IMT2000 terminal 10; The gateway module 251 connects the Internet 30 to the multimedia server 42 of the link address where the corresponding video data exists based on the link address transmitted from the proxy server 252 and the transmission rate conversion and data format conversion request signals. Through the required steps; The multimedia server 42 having the corresponding video data transmitting the requested video data to the gateway module 251 of the video gateway 25 through the Internet 30; And The gateway module 251 converts the transmitted video data into a data format and a data transmission rate, and transmits the wireless data to the IMT2000 terminal 10 via the base station controller 22 and the base station 21. A method of operating an IMT2000 communication system having a video gateway.