KR20000067044A - Gateway apparatus and method for wireless data service, and wireless data service system and method using the apparatus and method - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to a gateway device for a wireless data service, a method thereof, a wireless data service system using the same, and a method thereof.

2. The technical problem to be solved by the invention

The present invention provides a gateway device and method for resolving a transmission time delay by minimizing the amount of transmission data in a communication interval, and a wireless data service system and method and method for providing a wireless data service using the same. Its purpose is to provide a computer readable recording medium having recorded thereon a program.

3. Summary of Solution to Invention

The present invention includes a first step in which a gateway device analyzes cache information, performs web information (url) request for a main site, receives web data, and stores the web data in a cache database; When the gateway device receives a web information (url) request from a web browser, a second step of determining whether the information is valid by comparing the received information to the web server and cache information; As a result of the determination of the second step, if the cache information is valid, the cache database is searched and the corresponding web data is converted / compressed and transmitted to the web browser. If not, the web information (url) is requested to the web server and transmitted. Receiving a third step; The gateway device compresses the web document received from the web server, transmits the web document to the web browser, parses the web document received from the web server, grasps the image information, and requests and receives the image data from the web server in advance. A fourth step of storing; And when the web browser decrypts the received web document and requests image information, the gateway device converts the image data received in advance and transmits the received image data to the web browser.

4. Important uses of the invention

The present invention is used to provide a wireless data service such as an Internet service in a terminal such as a mobile communication terminal, a personal mobile communication terminal, a wireless calling terminal and a personal data communication terminal (PDA), a smart phone, and the like.

Description

GATEWAY APPARATUS AND METHOD FOR WIRELESS DATA SERVICE, AND WIRELESS DATA SERVICE SYSTEM AND METHOD USING THE APPARATUS AND METHOD}

The present invention is a mobile terminal capable of mobile computing and equipped with a web browser (mobile communication terminal, personal mobile communication terminal, wireless call terminal, personal data communication terminal and smart phone, etc.) and a gateway for controlling web information to be transmitted to a wired terminal Apparatus and method thereof, and a wireless data service system for providing wireless data service using the same, and a computer readable recording medium storing the method and a program for realizing the methods, particularly web data in wired and wireless data communication Gateway device for compressing / recovering the data and minimizing data transmission / reception intervals, and a method thereof, a wireless data service system for providing a wireless data service using the same, and a computer program recorded thereon Record Relate to.

First, the term wireless data service used in the present invention, by customizing the existing Internet services, etc. in consideration of the limitations of the wireless terminal by using a wireless data service based (IWF: InterWorking Function), anytime, anywhere A service that provides fast web surfing and data exchange.

On the other hand, in the conventional proxy server (which performs a similar function as the gateway device of the present invention), whether the web information request requested by the web browser (terminal) is simply in the cache (or is stored in the cache is valid). After the comparison, the response was sent to a web browser. For this reason, transmitting data to a wireless terminal using a wireless transmission section requires a lot of network time, or due to the limitations of the wireless terminal (limited memory, limited screen size, limited battery capacity, limited input method, etc.) There was concern that it would be impossible or to lose integrity.

Recently, in order to solve the above problems, WAP (Wireless Application Protocol) or WK (Wireless Knowledge) has been promoted for the purpose of establishing wireless Internet standards and developing standard applications (eg, web browsers, gateway servers, etc.).

However, there has been a problem that the recent method as described above is possible only in an integrated connection to a data network and only in a new terminal (eg, a wap phone).

The present invention has been made to solve the above problems, a gateway device for solving the transmission time delay through minimizing the amount of data transmitted in the communication interval, and a wireless data service for providing a wireless data service using the same It is an object of the present invention to provide a computer-readable recording medium recording a system and a method thereof and a program for implementing the methods.

Another object of the present invention is a gateway device for providing a wireless data service such as an Internet service or the like regardless of the function and type of a terminal, and a wireless data service system and a method for providing a wireless data service using the same. A computer readable recording medium having recorded thereon a program for realizing the above methods is provided.

It is still another object of the present invention to provide a gateway device and a method for eliminating a user latency delay by processing a request for a web server on the Internet in advance for a request from a web browser, and to provide a wireless data service using the same. A wireless data service system for providing the same, a method thereof, and a computer readable recording medium having recorded thereon a program for realizing the above methods are provided.

Another object of the present invention is to delay user waiting time by enabling self-response processing without making a request for a web server on the Internet to a request from a web browser through proper prediction of data to be stored in a cache. The present invention provides a gateway device for solving the problem, a method thereof, a wireless data service system for providing a wireless data service using the same, and a method and a computer readable recording medium storing a program for implementing the methods.

1 is an exemplary view of a wireless data service network for explaining a wireless data service according to the present invention.

2 is a detailed exemplary view of interworking with a wireless data service network according to the present invention.

3 is a block diagram of an embodiment of a wireless data service system according to the present invention;

4 is a block diagram of an embodiment of a gateway device according to the present invention;

5 is a flow diagram of an embodiment of a wireless data service method in accordance with the present invention.

6 is a flowchart illustrating an embodiment of a gateway device according to the present invention;

7 is a flowchart illustrating an embodiment operation of a content converter according to the present invention;

* Explanation of symbols for the main parts of the drawings

300: gateway device 310: server control unit

311: connection port 312: communication

313: controller 314: web information (URL) preprocessor

315: Web document (HTML) preprocessor 320: Content conversion unit

321: Web document (HTML) conversion processor 322: Text Compressor

323: image conversion processor 330: cache management unit

331: cache controller 332: cache database

340: web server 350: terminal

351: Client Handler 352: Web Browser

360: base station 370: mobile communication exchange

380: Data network matching device

A system for achieving the above object is a wireless data service system for performing a wireless data service by reducing the data transmission amount and transmission time, requesting web information (URL) to the gateway device through a wireless communication network and network matching device, A terminal for restoring and browsing web data (Web Contents) received in response to the web information request; The wireless communication network for transmitting a web information request from the terminal to the gateway device through the network matching device, and for transmitting the web data received from the gateway device through the network matching device to the terminal according to the request; The network matching device for matching and interworking the wireless communication network with the gateway device; In response to a request for web information from the terminal, the web information is converted to and compressed from a web server, the received web document, text and image data are reduced, and the amount of data is reduced and transmitted to the terminal through the network matching device and the wireless communication network. The gateway device for performing; And storing the web data and transmitting the web data according to a request of the gateway device.

Meanwhile, the wireless data service method of the present invention is a wireless data service method applied to a wireless data service system for reducing data transmission amount and transmission time, wherein a terminal transmits web information (URL) to a gateway device through a wireless communication network and a network matching device. Requesting a first step; A second step of the gateway device extracting header information of the web information and requesting the web information from the web server to receive the web information; A third step of the gateway device converting / compressing the received web document, text and image data to the web server to reduce the amount of data and transmitting the reduced amount of data to the terminal through the network matching device and the wireless communication network; And a fourth step of recovering and browsing the web data by the terminal receiving the web data.

The wireless data service method may further include: a fifth step of the gateway device searching for web data having a high possibility of re-request in advance and storing it in a cache database; A sixth step of the gateway device comparing information received from the web server with information about web data previously stored in the cache database to determine whether the web data in the cache database is valid; As a result of the determination of the sixth step, if valid, the web data stored in the cache database is searched, converted / compressed, and transmitted to the terminal through the network matching device and the wireless communication network. Seventh step; And a pre-request function for parsing a web document and receiving and storing image data from the web server in advance when the next image request is received, converting the image to the terminal when the image is requested. Further comprising the eighth step of performing.

The wireless data service method may further include: a fifth step of the gateway device searching for, converting / compressing web data having a high possibility of re-request, and storing the converted / compressed web data together with the original web data in a cache database; A sixth step of the gateway device comparing information received from the web server with information about web data previously stored in the cache database to determine whether the web data in the cache database is valid; As a result of the determination in the sixth step, if valid, the web data stored in the cache database is searched and the original web data or the converted / compressed web data is searched through the network matching device and the wireless communication network according to a user's option. A seventh step, if not valid, skipping to the third step; And when the gateway device parses a web document and requests an image next time, requests the image data from the web server in advance, receives the image data, converts the image, and stores the original image data together with the original image data. The method may further include an eighth step of performing a prerequest function for delivering the converted image data to the terminal.

On the other hand, the gateway device of the present invention is a gateway device for a wireless data service, comprising: content conversion means for converting a web document and an image and compressing a text under the control of a first control means; And requesting web information from an external web server in response to a web information request from an external terminal, and controlling the converted / compressed web document, text, and image data to be converted and compressed by the content conversion means to reduce the amount of data to the terminal. And said first control means for transmitting.

Meanwhile, in the method of processing a wireless data service in a gateway device of the present invention, in a method applied to a gateway device for a wireless data service, the gateway device analyzes cache information and performs a web information (url) request for a main site. Receiving the web data and storing the web data in a cache database; When the gateway device receives a web information (url) request from a web browser, a second step of determining whether the information is valid by comparing the received information to the web server and cache information; As a result of the determination of the second step, if the cache information is valid, the cache database is searched and the corresponding web data is converted / compressed and transmitted to the web browser. If not, the web information (url) is requested to the web server and transmitted. Receiving a third step; The gateway device compresses the web document received from the web server, transmits the web document to the web browser, parses the web document received from the web server, grasps the image information, and requests and receives the image data from the web server in advance. A fourth step of storing; And when the web browser decrypts the received web document and requests image information, the gateway device converts the previously transmitted image data and transmits the image data to the web browser.

On the other hand, the wireless data service processing method in another gateway device of the present invention, in the method applied to the gateway device for wireless data service, when the web information is requested from the terminal, the controller reads the web protocol (HTTP), the specific header A first step of extracting the information and requesting the web information from the web server to receive the information; A second step of the controller interpreting the remaining header information and requesting and receiving a web document from the web server; A third step of reading and parsing the header of the received web document by the controller, analyzing the user option and the set mode, and delivering the same to a content converter; A fourth step of analyzing, by the content converter, a content type and determining a data type from raw data; And as a result of the determination of the fourth step, if the web document tag or attribute is converted into a web document by the web document conversion processor, if the text is compressed by the text compressor, and if the image is converted into an image by the image conversion processor through the controller And a fifth step of delivering to the terminal.

The wireless data service processing method in the other gateway device of the present invention may further include a controller configured to control a web document (HTML) preprocessor to retrieve web data having a high possibility of re-request and store it in a cache database in advance. 6 steps; After comparing the information received from the web server in the first step is cached to check whether the cache information is valid, to search the web data stored in the cache database to generate the header information of the response web data, the web data A seventh step of converting / compressing the data to the terminal; An eighth step of parsing a web document (HTML), extracting web information (URL) of the image, checking whether the web information (URL) of the image exists in a subsequent process, and requesting and transmitting image data to the web server in advance; And a ninth step of checking whether the image data is loaded in advance according to the web information request, searching for the image data stored in the cache database to generate header information of the response data, and then converting the image data to the terminal. Characterized in that further comprises.

On the other hand, the present invention, in order to reduce the data transmission amount and transmission time to perform a wireless data service, a wireless data service system having a large capacity processor, the terminal via the wireless communication network and network matching device to the gateway device Web information (URL) A first function of requesting; A second function in which the gateway device extracts header information of web information, requests web information from a web server, and receives web information; A third function of converting / compressing the web document, text and image data received by the gateway device to the web server, reducing the amount of data, and transmitting the reduced amount of data to the terminal through the network matching device and the wireless communication network; And a computer-readable recording medium having recorded thereon a program for realizing a fourth function of restoring and browsing the web data by the terminal receiving the web data.

On the other hand, the present invention, for the wireless data service, the gateway device having a large capacity processor, the gateway device analyzes the cache information to perform a web information (url) request to the main site receives the web data to the cache database A first function of storing; A second function that, when the gateway device receives a request for web information (url) from a web browser, compares the information received by requesting the web server with cache information and determines whether the information is valid; As a result of the determination in the second function, if the cache information is valid, the cache database is searched and converted / compressed, and the corresponding web data is transmitted to the web browser. If not, the web information (url) is requested to the web server. Receiving a third function; The gateway device compresses the web document received from the web server, transmits the web document to the web browser, parses the web document received from the web server, grasps the image information, and requests and receives the image data from the web server in advance. A fourth function to store; And when the web browser decrypts the received web document and requests image information, the gateway device reads a program for realizing a fifth function of converting the image data received in advance and transmitting the image data to the web browser. Provide a recording medium.

On the other hand, in the present invention, when a web device is requested from a terminal to a gateway device having a large capacity processor for wireless data service, the controller reads a web protocol (HTTP), extracts specific header information, and sends the web information to a web server. A first function of requesting and receiving information; A second function in which the controller interprets the remaining header information and requests and receives a web document from the web server; A third function of reading and parsing a header of the received web document by the controller, analyzing a user option and a set mode, and delivering the parsed content to a content converter; A fourth function of analyzing, by the content converter, a content type and determining a data type from raw data; And as a result of the determination in the fourth function, the web document tag or attribute converts the web document, the text compresses the text in the text compressor, and the image converts the image in the image conversion processor to control the controller. A computer readable recording medium having recorded thereon a program for realizing a fifth function delivered to the terminal is provided.

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 view of a wireless data service network for explaining a wireless data service according to the present invention, Figure 2 is a specific exemplary view of interworking with a wireless data service network according to the present invention.

First, a user terminal, such as a notebook computer, a wireless terminal, a mobile terminal, a personal mobile communication terminal, and a smart phone, should have its own operating system (OS) and be able to run a general commercial web browser. For this purpose, the operating system is targeted for Windows 95/98 version, but is newly developed through Windows CE, personal data communication terminal (PDA), smart phone, Macintosh operating system and simple program update. Also, if it is not built-in operating system, it can be used by connecting existing computing equipment (laptop computer, etc.) and terminal (wireless data terminal), and web browser and agent ( Minimal memory for Agent) processing.

Next, when the web gateway device for the wireless data service receives the web transmission request from the web browser through the client processor, the web gateway device receives the web contents from the requested web server, converts / compresses the data, and sends the data to the web browser through the client processor. Is the server that sends it. In other words, the gateway server refers to a server that receives web data from a web server and optimizes it for a wireless terminal and transmits the web data to the user terminal. Such a gateway device further performs a completely different function from the existing proxy server, which is a compression function and a conversion function for data purification.

On the other hand, the gateway device performs wireless data service infrastructure (IWF) and transmission control protocol / Internet protocol (TCP / IP) matching, and also the transmission control protocol / Internet protocol (TCP) with the Internet network and wireless data center (DNS) server / IP) Perform the matching.

3 is a configuration diagram of an embodiment of a wireless data service system according to the present invention.

The wireless data service system according to the present invention includes a gateway device 300 that manages web content (www: World Wide Web) conversion and a cache, a client processor 351 that performs a proxy function on the terminal 350, and a terminal 350. A mobile communication network for transmitting and receiving data by wirelessly connecting a web browser 352 for processing web information requests according to a user's request, a web server 340 for providing web data on the Internet, and a terminal 350 over a wireless network ( 360 and 370 and a data network matching device 380 for matching the gateway device 300 and the mobile communication switch 370 of the mobile communication network.

Looking at the configuration of the wireless data service system according to the present invention in more detail as follows.

The wireless data service system according to the present invention requests web information (URL) to the gateway device 300 through the wireless communication networks 360 and 370 and the data network matching device 380, and responds to the web information request in response to the web data request. The terminal 350 for restoring and browsing (Web Contents) and the web information request from the terminal 350 are transmitted to the gateway device 300 through the data network matching device 380, and the web data according to the request. Wireless network (360,370) for transmitting to the terminal 350, data network matching device (380) for matching and interworking the wireless network (370,360) and the gateway device 300, web data with high possibility of re-request If the cache information is valid for the web information request from the terminal 350, the cache is searched to convert / compress the web data or the web information is sent to the web server 340. The gateway device 300 and the web data are stored and converted to reduce the amount of data by converting / compressing the web document, text and image data received by request, and then transmit the web data according to the request of the gateway device 300. It includes a web server 340.

In this case, the gateway device 300 parses a web document along with a cache function using prefetch and requests image data from the web server 340 in advance and stores the image after the next image request. By performing a prerequest function for converting and immediately delivering an image upon request, the transmission time can be shortened by reducing the data transmission amount and improving the response speed according to the data compression. On the other hand, the original web data may be converted / compressed and stored together with the original web data, and then the converted / compressed web data or the original web data may be transferred as the user's option, but the transmission time may be shortened. However, the efficiency may be reduced because it takes up a lot of cache capacity.

Next, referring to the operation of the wireless data service system according to the present invention, the web browser 352 transmits a specific web information request to the gateway device 300 and the server controller 310 in the gateway device 300. Extracts the header information and requests the web information from the web server 340 to compare the received information with information about web data previously stored in the cache, and converts / compresses the data if the web data in the cache is valid. The web data is transmitted to the web browser 352 or the web server 340 is requested. The server controller 310 which has started receiving the response from the web server 340 passes the data to the content converter 320 to transmit it to the web browser 352, and regenerates (converts / compresses) the content converter 320. ), The web data is transmitted to the web browser 352 through the server controller 310.

In this case, the client processor 351 transmits a user option requested by the web browser 352 to the server controller 310 so that the server controller 310 reflects the response when the server controller 310 sends a response, and also transfers it from the server controller 310. It also performs a data restoration function for the received web data. In particular, when the web browser 352 requires only certain user options, the web browser 352 may implement the data restoration function of the client processor 351.

4 is a configuration diagram of an embodiment of a gateway device according to the present invention.

The gateway device 300 according to the present invention, under the control of the server control unit 310, under the control of the content conversion unit 320, the server control unit 310 for performing the conversion / compression for the web data, The cache management unit 330 for storing and managing web data retrieved in advance due to high possibility of request and the web data having high possibility of re-request are searched in advance and stored in the cache of the cache management unit 330 before the web information request. If the cache information is valid, the cache is searched to convert the corresponding web data from the content conversion unit 320 or to request a web data from the web server to transfer the received web document and text and image data to the content conversion unit 320. ) To control the conversion / compression to reduce the amount of data to include a server control unit 310 for delivery to the terminal.

At this time, the server controller 310 parses a web document along with a cache function using prefetch, requests an image data from the web server 340 in advance, stores the received image data when the next image request is received, and then stores the image request. It performs the prerequest function to convert the time image and deliver it immediately. On the other hand, the original web data may be converted / compressed and stored together with the original web data, and then the converted / compressed web data or the original web data may be transferred as the user's option, but the transmission time may be shortened. However, the efficiency may be reduced because it takes up a lot of cache capacity.

Next, a detailed configuration of the server controller 310, the content converter 320, and the cache manager 330 will be described.

First, the server controller 310 parses a web document and a communicator 312 for transmitting and receiving data to and from the data network matching device 380, the web server 340, and the like through the connection port 311, and then applies the image data. URL preprocessor (314: because the web browser performs an image request soon after receiving a response to the web document) to check whether there is a request for the web server 340 and request and store the image data in the cache in advance. In order to control the operation of each of the components and the HTML preprocessor 315 for requesting the web server in advance and storing it in the cache for data that is highly likely to be re-requested among the web data. The controller 313 is provided.

In addition, the content conversion unit 320 may grasp and parse the characteristics of the web document (HTML), and the web document (HTML) conversion processor for processing conversion of tags and properties of the web document ( 321), a text compressor 322 for compressing text characters in a web document, and image attributes for web images such as GIF files and JPG files, which are compressed files constituting the web document. An image conversion processor 323 for reducing the file size SIZE.

The cache manager 330 may further include a cache database (DB) for storing cache data under the control of the cache controller 331 and the cache controller 331 for processing and managing cache data through a hash table. ) 332.

5 is a flowchart illustrating an embodiment of a wireless data service method according to the present invention.

First, the gateway device 300 searches for web data with high possibility of re-requesting in advance and stores it in a cache (501). In this case, the conversion / compression may be stored and the conversion / compression process may be omitted in the transmission process to the terminal 350 later.

Thereafter, when the terminal 350 requests the web information (URL) from the gateway device 300 through the wireless communication networks 360 and 370 and the data network matching device 380 (503), the gateway device 300 requests the header of the web information. By extracting the information, the web server requests the web information, receives the information (505), and compares the information with the web data previously stored in the cache to determine whether the web data in the cache is valid (507).

As a result of the determination, if valid, the web data stored in the cache is searched and converted / compressed and transmitted to the terminal 350 through the data network matching device 380 and the wireless communication networks 360 and 370 (509). Requests web information to the server 340, converts / compresses the received web document, text and image data, and reduces the amount of data to be transmitted to the terminal 350 through the data network matching device 380 and the wireless communication networks 360 and 370. (511).

Thereafter, the terminal 350 receiving the web data restores and browses the web data and outputs the web data to the user (513).

In this case, as described above, the gateway device 300 may be implemented so as not to perform the cache function using the prefetch, and if the next image request is parsed by the web document, the gateway server 300 images the web server 340 in advance. It is also possible to perform a prerequest function for requesting data, storing the received data, converting the image, and delivering the image immediately upon request.

6 is a flowchart illustrating an embodiment of a gateway device according to the present invention.

First, the operation of the gateway device as a whole is as follows.

Although not shown in the drawing, the gateway device 300 periodically and whenever necessary, analyzes the cache information to independently perform a web information (url) request for the main site to receive the web data in advance to store in the cache.

Then, when the gateway device 300 receives the web information (url) request from the web browser, the gateway device 300 compares the information received by the request to the web server 340 and cache information to determine whether it is valid. As a result of the determination, if the cache information is valid, the cache is searched, the corresponding web data is converted / compressed and transmitted to the web browser. If the cache information is invalid, the web information url is requested and received from the web server 340.

Subsequently, the gateway device 300 compresses the web document received from the web server 340 and transmits the web document to the web browser, parses the web document received from the web server 340, and grasps the image information in advance to obtain the web server 340. ) To receive image data in advance and store it temporarily.

Thereafter, when the web browser decrypts the received web document and requests image information, the gateway device 300 converts the received image data and transmits the received image data to the web browser.

The operation of the gateway device 300 as described above will be described in detail with reference to FIG. 6.

As shown in the figure, upon receiving a connection request from the terminal 350 through the server's communicator 312 and the connection port 311, the controller 313 reads a web protocol (HTTP) (601) In step 603, the first header information is extracted from the web server 340, and the web information is requested.

Thereafter, by comparing the information received from the web server 340 is cached to determine whether the cache information is valid (605), if it is valid, processing according to the option from the user. That is, after retrieving the web data stored in the cache (607) and generating the header information of the response web data (609), the web data is converted / compressed and transmitted to the terminal 350 (611). On the other hand, if it is not valid, it checks whether the image data has been loaded in advance (613), and if so, retrieves the image data stored in the cache (607), generates header information of the response data (609), and then converts the image data. The terminal transmits the data to the terminal 350 (611).

On the other hand, if the check result 613, the image data is not loaded in advance, the remaining header information is interpreted to request the web document to the web server 340 (615). When the web document is received from the web server 340, the header of the response data is read and parsed to analyze user options and set modes (including those cached) (617), and the received data is converted into a content converter. Turn to 320.

Then, the content conversion unit 320 analyzes the content type and determines the data type from the raw data (619), and if the web document tag or attribute is used, the web document conversion processor 321 retrieves the web document. If the text is converted (627), the text compressor 322 compresses the text (629), and if the image is converted by the image conversion processor 323 (631) and sent to the controller 313, the controller 313 Transmits the converted / compressed data to the terminal 350 through the communicator 312. Then, the client processor of the terminal 350 restores the received data and delivers it to the web browser.

On the other hand, if the determination result 619, a web document tag or an attribute, the URL preprocessor 314 may further perform a process of performing a pre-request for a subsequent image request. That is, by parsing a web document (HTML) to extract the web information (URL) of the image (621) by checking whether the web information (URL) of the image exists in the next process (623) by the web server 340 in advance to the image data (625). By doing so, when the terminal 350 requests the image data, the terminal 350 converts the image data that is loaded in advance and transmits the image data.

In addition, the controller 313 may periodically or by means of fetch logic that has the highest web protocol (HTTP) request via the HTML preprocessor 315 to minimize web information requests to the web server 340. The cache may be performed regardless of the client's web protocol (http) request.

7 is a flowchart illustrating an embodiment of a content converter according to the present invention.

First, the content conversion unit 320 analyzes the content type and determines the data type from the raw data (619). If the image (JPG / GIF) is checked, the user option is checked (701). Check (703). The check result (703), if not processed returns (705), if processed receives all the file content in the buffer (707) converts the image (709) and transmits to the communication socket (711).

On the other hand, if the determination result 619, a web document tag or an attribute, the user option is checked (701) to confirm whether the processing (713). The check result 713, if not processed, returns (715), and if processed, receives the packet currently available in the buffer (717), converts the web document (HTML) (719), and transmits it to the communication socket (721). Then, it checks whether it is the end of the character stream (723) or repeats the process of receiving a packet that is currently available in the buffer (717), and returns if it is the end.

On the other hand, the determination result (619), if the text is checked by the user option (701) to determine whether the process (725). The check result (725), if not processed returns (727), and if processed receives all the file contents in the buffer (729), compresses the text (731) and transmits to the communication socket (733).

On the other hand, if the determination result 619, image, web document, and other content other than text is returned without processing (727).

As described above, the gateway device, the wireless data service system, and the method of the wireless data network according to the present invention may be replaced by similar methods of various forms. In addition, the client processor of the terminal may be modified in various forms to perform its functions or various modifications to control compression / restore. In particular, the present invention is a mobile communication terminal, a personal mobile communication terminal, a wireless call terminal, a personal data communication terminal (PDA), a smart phone (Smart Phone), etc. Applicable to the terminal form.

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

As described above, the present invention is applicable not only to wireless communication networks such as wireless data networks, mobile communication networks, and personal mobile communication networks, which are limited in transmission speed, but also to general wired communication networks (LAN, WAN, ISDN), and images and web documents. By reducing the amount of data transferred by the conversion and compression / restore function of the text, the transfer speed can be improved.

In addition, the present invention, by performing the prefetch (Prefetch) function and the pre-request (Prerequest) function, there is an effect that can improve the response speed to shorten the transmission time.

In addition, the present invention, not only wired terminal such as a desktop computer, but also all wired / wireless terminals having a web browsing function such as a mobile communication terminal, a personal mobile communication terminal, a personal data communication terminal (PDA), a smart phone, and the like. It can be applied, which makes it possible to use the Internet service faster and has the advantage of viewing existing web documents.

In addition, the present invention has the effect that the user can set the proxy setting of the level desired by the user, so that the Internet can be used more conveniently.

Claims (37)

In the wireless data service system for performing a wireless data service by reducing the data transmission amount and transmission time, A terminal for requesting web information (URL) to a gateway device through a wireless communication network and a network matching device, and restoring and browsing web data received in response to the web information request; The wireless communication network for transmitting a web information request from the terminal to the gateway device through the network matching device, and for transmitting the web data received from the gateway device through the network matching device to the terminal according to the request; The network matching device for matching and interworking the wireless communication network with the gateway device; In response to a request for web information from the terminal, the web information is converted to and compressed from a web server, the received web document, text and image data are reduced, and the amount of data is reduced and transmitted to the terminal through the network matching device and the wireless communication network. The gateway device for performing; And The web server storing web data and transmitting the web data according to a request of the gateway device. Wireless data service system comprising a. The method of claim 1, The gateway device, After retrieving web data that is highly likely to be re-requested and storing it in the cache database, if the cache information is valid for the web information request from the terminal, the cache database is searched and converted / compressed to transmit the web data to the terminal. A wireless data service system further comprising a prefetch function. The method according to claim 1 or 2, The gateway device, Parsing a web document and requesting image data from the web server in advance when the next image request is received, storing the image data, and performing a prerequest function for converting the image to the terminal when the image is requested. Wireless data service system characterized by. The method of claim 1, The gateway device, The web data that is likely to be re-requested is searched in advance, converted / compressed, stored in the cache database along with the original web data, and if the cache information is valid for the web information request from the terminal, the cache database is searched for the user's option. The wireless data service system further comprises a prefetch function of transmitting original web data or converted / compressed web data to the terminal. The method according to claim 1 or 4, The gateway device, After parsing the web document and requesting the next image request, the web server requests the image data in advance, converts it, stores it with the original image data, and then saves the original image data or the converted image data according to the user's option. A wireless data service system further comprising a prerequest function for delivery to the terminal. The method of claim 3, wherein The terminal, A client processor for transmitting a user option requested by a web browser to the gateway device to reflect the response when the gateway device sends a response, and requesting web information from the gateway device to restore data on the received web data; And The web browser for transmitting a user option to the client processor, and browses the received data to output to the user Wireless data service system comprising a. The method of claim 6, And when the web browser requires only certain user options, perform data restoration function of the client processor in the web browser. The method of claim 1, The gateway device, Content conversion means for converting the web document and the image and compressing the text according to the control of the first control means; And The first control means for reducing the amount of data and transmitting the web document and text and image data received by requesting the web server to the web server by converting / compressing the content conversion means; Wireless data service system comprising a. The method of claim 8, Further, the gateway apparatus further includes cache management means for storing and managing web data searched in advance because of high possibility of re-request according to the control of the first control means. The first control means searches for the web data with high possibility of re-request in advance and stores it in the cache database of the cache management means. If the cache information is valid for the web information request, the first control means searches the cache database and retrieves the web data. And converting / compressing the content conversion means to transmit the content to the terminal. The method of claim 9, The cache management means, Cache control means for processing and managing cache data through a hash table; And The cache database for storing cache data under the control of the cache control means Wireless data service system comprising a. The method according to any one of claims 8 to 10, The first control means, Parsing a web document and requesting image data from the web server in advance when the next image request is received, storing the image data, and performing a prerequest function for converting the image to the terminal when the image is requested. Wireless data service system characterized by. The method of claim 11, The first control means, Communication means for transmitting and receiving data with the network matching device and the web server through an access port; Web information (URL) preprocessing means for parsing a web document to check whether there is a next request for image data so as to request image data from the web server in advance and store it in the cache database; Web document (HTML) preprocessing means for requesting the web server in advance for data having a high possibility of re-request among web data and storing it in the cache database; And Second control means for controlling operations of the communication means, the web information (URL) preprocessing means and the web document (HTML) preprocessing means and controlling the flow of data Wireless data service system comprising a. The method of claim 11, The content conversion means, Web document (HTML) conversion processing means for processing conversion of tags and properties of the web document; Text compression means for compressing text characters in a web document; And Image conversion processing means for reducing the file size by converting image attributes to the compressed file images constituting the web document Wireless data service system comprising a. A wireless data service method applied to a wireless data service system for reducing data transmission amount and transmission time, A first step of a terminal requesting web information (URL) to a gateway device through a wireless communication network and a network matching device; A second step of the gateway device extracting header information of the web information and requesting the web information from the web server to receive the web information; A third step of the gateway device converting / compressing the received web document, text and image data to the web server to reduce the amount of data and transmitting the reduced amount of data to the terminal through the network matching device and the wireless communication network; And A fourth step of restoring and browsing the web data by the terminal receiving the web data Wireless data service method comprising a. The method of claim 14, A fifth step of the gateway device searching for web data having a high possibility of re-request in advance and storing it in a cache database; A sixth step of the gateway device comparing information received from the web server with information about web data previously stored in the cache database to determine whether the web data in the cache database is valid; And As a result of the determination of the sixth step, if valid, the web data stored in the cache database is searched, converted / compressed, and transmitted to the terminal through the network matching device and the wireless communication network. 7th step passed Wireless data service method further comprising. The method according to claim 14 or 15, When the gateway device parses a web document and requests an image next time, the gateway device requests and transmits the image data to the web server in advance, stores the image data, and converts the image when the image request is made to the terminal. 8th Step to Perform Wireless data service method further comprising. The method of claim 14, A fifth step of the gateway device retrieving and converting / compressing web data having a high possibility of re-request and storing the converted / compressed web data together with the original web data in a cache database; A sixth step of the gateway device comparing information received from the web server with information about web data previously stored in the cache database to determine whether the web data in the cache database is valid; And As a result of the determination in the sixth step, if valid, the web data stored in the cache database is searched and the original web data or the converted / compressed web data is searched through the network matching device and the wireless communication network according to a user's option. Seventh step, if it is not valid, and skips to the third step. Wireless data service method further comprising. The method according to claim 14 or 17, When the gateway device parses a web document and requests an image next time, the gateway device requests image data from the web server in advance, converts the image, and stores the image data along with the original image data. Eighth step of performing a prerequest function for delivering the converted image data to the terminal Wireless data service method further comprising. In the gateway device for wireless data service, Content conversion means for converting the web document and the image and compressing the text according to the control of the first control means; And In response to a request for web information from an external terminal, the web document, text, and image data received by requesting web information from an external web server are controlled to be converted / compressed by the content conversion means to reduce the amount of data to be transmitted to the terminal. Said first control means for Gateway device for a wireless data service comprising a. The method of claim 19, In accordance with the control of the first control means, further comprising a cache management means for storing and managing web data retrieved in advance because of the high possibility of re-request, The first control means searches for the web data with high possibility of re-request in advance and stores it in the cache database of the cache management means. If the cache information is valid for the web information request of the terminal, the first control means searches for the cache database and And converting / compressing web data in the content conversion means to transmit the web data to the terminal. The method of claim 20, The cache management means, Cache control means for processing and managing cache data through a hash table; And The cache database for storing cache data under the control of the cache control means Gateway device for a wireless data service comprising a. The method according to any one of claims 19 to 21, The first control means, Parsing a web document and requesting image data from the web server in advance when the next image request is received, storing the image data, and performing a prerequest function for converting the image to the terminal when the image is requested. Gateway device for wireless data service characterized in that. The method of claim 22, The first control means, Communication means for transmitting and receiving data with the terminal and the web server through an access port; Web information (URL) preprocessing means for parsing a web document to check whether there is a next request for image data so as to request image data from the web server in advance and store it in the cache database; Web document (HTML) preprocessing means for requesting the web server in advance for data having a high possibility of re-request among web data and storing it in the cache database; And Second control means for controlling operations of the communication means, the web information (URL) preprocessing means and the web document (HTML) preprocessing means and controlling the flow of data Gateway device for a wireless data service comprising a. The method of claim 22, The content conversion means, Web document (HTML) conversion processing means for processing conversion of tags and properties of the web document; Text compression means for compressing text characters in a web document; And Image conversion processing means for reducing the file size by converting image attributes to the compressed file images constituting the web document Gateway device for a wireless data service comprising a. The method of claim 19, In accordance with the control of the first control means, the re-request possibility, further comprising a cache management means for converting and compressing the previously retrieved web data to store and manage with the original web data, The first control means searches for, converts and compresses web data having a high possibility of re-request in advance, stores it in the cache database of the cache management means, and if the cache information is valid for the web information request of the terminal, the cache database. And transmitting the original web data or the converted / compressed web data to the terminal according to a user's option. The method of claim 19 or 25, The first control means, Parse the web document and request the image data from the web server in advance when the next image request is received. The image is converted and stored together with the original image data. When the image is requested, the original image data or the converted image data The gateway device for a wireless data service, characterized in that for further performing a prerequest (Prerequest) function for delivering to the terminal. In the method applied to a gateway device for a wireless data service, A first step in which the gateway device analyzes cache information, performs web information (url) request for a main site, receives web data, and stores the web data in a cache database; When the gateway device receives a web information (url) request from a web browser, a second step of determining whether the information is valid by comparing the received information to the web server and cache information; As a result of the determination of the second step, if the cache information is valid, the cache database is searched and the corresponding web data is converted / compressed and transmitted to the web browser. If not, the web information (url) is requested to the web server and transmitted. Receiving a third step; The gateway device compresses the web document received from the web server, transmits the web document to the web browser, parses the web document received from the web server, grasps the image information, and requests and receives the image data from the web server in advance. A fourth step of storing; And When the web browser decrypts the received web document and requests image information, the gateway device converts the image data received in advance and transmits the image data to the web browser; Wireless data service processing method in the gateway device comprising a. In the method applied to a gateway device for a wireless data service, Receiving web information from a terminal, the controller reads a web protocol (HTTP), extracts specific header information, requests web information from a web server, and receives the information; A second step of the controller interpreting the remaining header information and requesting and receiving a web document from the web server; A third step of reading and parsing the header of the received web document by the controller, analyzing the user option and the set mode, and delivering the same to a content converter; A fourth step of analyzing, by the content converter, a content type and determining a data type from raw data; And As a result of the determination in the fourth step, the web document tag or attribute converts the web document, the text compresses the text in the text compressor, and the image converts the image in the image converting processor through the controller. The fifth step of delivering to the terminal Wireless data service processing method in the gateway device comprising a. The method of claim 28, A sixth step in which the controller controls a web document (HTML) preprocessor to retrieve web data having a high possibility of re-request and store it in a cache database in advance; And After comparing the information received from the web server in the first step is cached to check whether the cache information is valid, to search the web data stored in the cache database to generate the header information of the response web data, the web data Step 7 of converting and compressing the data to be transmitted to the terminal The wireless data service processing method in the gateway device further comprises. The method of claim 28 or 29, An eighth step of parsing a web document (HTML), extracting web information (URL) of the image, checking whether the web information (URL) of the image exists in a subsequent process, and requesting and transmitting image data to the web server in advance; And A ninth step of checking whether the image data has been loaded in advance according to a web information request, searching for the image data stored in the cache database to generate header information of the response data, and then converting the image data and transmitting the image data to the terminal; The wireless data service processing method in the gateway device further comprises. In order to perform wireless data service by reducing the amount of data and the transmission time, in a wireless data service system having a large capacity processor, A first function of the terminal requesting web information (URL) to the gateway device through a wireless communication network and a network matching device; A second function in which the gateway device extracts header information of web information, requests web information from a web server, and receives web information; A third function of converting / compressing the web document, text and image data received by the gateway device to the web server, reducing the amount of data, and transmitting the reduced amount of data to the terminal through the network matching device and the wireless communication network; And A fourth function of restoring and browsing the web data by the terminal receiving the web data A computer-readable recording medium having recorded thereon a program for realizing this. The method of claim 31, wherein A fifth function in which the gateway device searches for web data having a high possibility of re-request in advance and stores it in a cache database; A sixth function in which the gateway device compares information received from the web server with information about web data previously stored in a cache database to determine whether web data in the cache database is valid; And As a result of the determination in the sixth function, if valid, the web data stored in the cache database is searched and converted / compressed and transmitted to the terminal through the network matching device and the wireless communication network. 7th function passed on A computer-readable recording medium that records a program for further realization. The method of claim 31 or 32, When the gateway device parses a web document and requests an image next time, the gateway device requests and transmits the image data to the web server in advance, stores the image data, and converts the image when the image request is made to the terminal. 8th function to perform A computer-readable recording medium that records a program for further realization. In the gateway device having a large capacity processor for wireless data service, A first function in which the gateway device analyzes cache information, performs web information (url) request for a main site, receives web data, and stores the web data in a cache database; A second function that, when the gateway device receives a request for web information (url) from a web browser, compares the information received by requesting the web server with cache information and determines whether the information is valid; As a result of the determination in the second function, if the cache information is valid, the cache database is searched and converted / compressed, and the corresponding web data is transmitted to the web browser. If not, the web information (url) is requested to the web server. Receiving a third function; The gateway device compresses the web document received from the web server, transmits the web document to the web browser, parses the web document received from the web server, grasps the image information, and requests and receives the image data from the web server in advance. A fourth function to store; And A fifth function of converting the image data received in advance to the web browser when the web browser decrypts the received web document and requests image information; A computer-readable recording medium having recorded thereon a program for realizing this. In the gateway device having a large capacity processor for wireless data service, A first function of receiving, by the controller, web information from the terminal, reading the web protocol (HTTP), extracting specific header information, requesting the web information from the web server, and transmitting the information; A second function in which the controller interprets the remaining header information and requests and receives a web document from the web server; A third function of reading and parsing a header of the received web document by the controller, analyzing a user option and a set mode, and delivering the parsed content to a content converter; A fourth function of analyzing, by the content converter, a content type and determining a data type from raw data; And As a result of the determination in the fourth function, if the web document tag or the attribute is used, the web document conversion processor converts the web document, if the text is compressed, the text compressor compresses the text, and if the image is converted, the image conversion processor converts the image and converts the image through the controller. A fifth function for transferring to the terminal A computer-readable recording medium having recorded thereon a program for realizing this. 36. The method of claim 35 wherein A sixth function, wherein the controller controls a web document (HTML) preprocessor to retrieve web data having a high possibility of re-request and store it in a cache database in advance; And The first function compares whether the information received from the web server is cached, checks whether the cache information is valid, searches for web data stored in the cache database, generates header information of response web data, and then web data. Seventh function of converting / compressing the data to the terminal A computer-readable recording medium that records a program for further realization. The method of claim 35 or 36, An eighth function of parsing a web document (HTML), extracting web information (URL) of the image, checking whether the web information (URL) of the image exists in a subsequent process, and requesting and transmitting image data to the web server in advance; And A ninth function of checking whether the image data is loaded in advance according to a web information request, searching for the image data stored in the cache database to generate header information of the response data, and then converting the image data and transmitting the image data to the terminal; A computer-readable recording medium that records a program for further realization.