KR100568568B1 - A communication method using a proxy server in an wireless mobile communication network - Google Patents

Abstract

The present invention relates to a hypertext transfer protocol (HTTP) communication method using a proxy server in a wireless mobile communication network. In a communication method using a proxy server according to the present invention, a method of communicating in a proxy interworking with a terminal and a web server through a wireless mobile communication network, the method comprising: a) a first page request message (where the proxy server is transmitted from the terminal to the web server) Processing a request); b) the proxy server receiving a first page response message transmitted from the web server to the terminal and confirming whether the return code of the response message is a redirection related return code; And c) if the return code of the response message is a redirect related return code, the proxy server transmitting a second page request message to the web server, wherein the second page response message is transmitted to the terminal through the web server. It features. According to the present invention, if the proxy server or gateway processes 300 (3xx) redirection, the wireless network communication time is reduced, so that the user can use the wireless Internet service more quickly and at a lower rate, and also the cookie information of the client By storing the proxy gateway, data packet charges can be reduced and security problems can be solved.

Proxy Server, Wireless Cellular Network, Redirection, Request, Response, Terminal, Web Server

Description

A communication method using a proxy server in an wireless mobile communication network}

1 is a block diagram of a typical wireless mobile communication network.

2 is a diagram illustrating a general redirection process.

3 is a diagram illustrating a process in which a gateway (proxy gateway) serving as a proxy server according to an embodiment of the present invention processes a redirect.

4 is a flowchart illustrating an operation of a proxy gateway processing an HTTP packet transmitted from a terminal according to an embodiment of the present invention.

5 is a flowchart illustrating an operation of a proxy gateway that processes an HTTP packet transmitted from a web server according to an embodiment of the present invention.

6 is a table illustrating an HTTP return code.

The present invention relates to a communication method using a proxy server in a wireless mobile communication network, and more particularly, to a hypertext transfer protocol (HTTP) communication method using a proxy server in a wireless mobile communication network.

As computer-related industries and technologies have evolved, user requirements have diversified and the amount of data involved has increased. In order to accommodate this, researches on a transmission method for delivering a large amount of information more quickly and accurately are being actively conducted.

On the other hand, the number of wireless mobile subscribers has exploded worldwide in the 1990s since the wireless transmission technology began to be used, and in recent years, the research on broadband wireless mobile communication network to provide multimedia services through wireless transmission technology. Is actively progressing and standardization is in progress.

In the wired network, as digitalization of the transmission network enables multiplexing and transmitting various types of traffic sources represented by digital signals, an ISDN (Integrated Service Digital Network) providing an integrated service in one network has emerged. Since then, as the necessity of broadband for providing multimedia services increases, various types of high-speed packet networks have been proposed.

In the wireless network, since the first generation of analog cordless and cellular mobile communication has emerged, the number of mobile communication users has been increasing year by year due to the convenience and convenience of communication regardless of the location of the portable terminal. Analog first generation mobile communication has developed into a digital second generation mobile communication system, and many second generation mobile communication systems provide mobile communication services. Although the first and second generation mobile communication systems mainly provided voice-oriented services, as the number of mobile communication users increased and users' demand for high-speed communication and multimedia services increased, they supported various data rates through broadband. The development of the third generation mobile communication system is in progress. The wireless network has the advantage of being easy to install and expand and to provide user mobility. However, the wireless network has a limited spectrum and requires sharing of limited channel resources among multiple users.

1 is a block diagram of a general wireless mobile communication network, including a terminal 100, a base station 210, a Packet Data Service Node (PDSN) 220, a gateway serving as a proxy server (hereinafter, referred to as a “proxy gateway”) and It may be made of a web server (240).

Referring to FIG. 1, in a typical wireless mobile communication network, a terminal 110 is connected to a base station 210 through a wireless mobile communication network. For example, a wireless Internet user uses a mobile communication terminal 110 to designate a web server. At 240, page A is clicked.

In this case, the general wireless data packet flow requests the A page to the web server 240 via the wireless Internet proxy gateway 230 via the PDSN 220 at the terminal 110, and the web server 240. The content corresponding to page A is transmitted to the terminal 110 via the PDSN 220 through the wireless Internet proxy gateway 230.

In this case, in order to enable packet transmission in a wireless network, a point-to-point (PPP) connection is established between the terminal 110 and the PDSN 220, and the PDSN 220 not only plays a role in establishing a connection. The mobile communication terminal 110 is also responsible for charging a certain size for the data packets sent and received.

2 is a diagram illustrating a general redirection process.

Referring to FIG. 2, in the above-described wireless mobile communication network, when a call flow in the case of redirecting between the terminal 110 and the web server 240 is viewed, the mobile communication terminal 110 is connected to the web server 240. When the page A is requested (S210), the web server 240 is redirected to the terminal B to the terminal 110 (S220).

Thereafter, the terminal 110 requests a page B again (S230). In this case, the web server 240 sends a page corresponding to the page B to the terminal 110.

For example, in the wireless mobile communication network, when the terminal 110 executes the http://www.magicn.com GET command, if the page is moved to another page, the temporary code of 302 return code (Moved Temporarily responds to pages that need to be redirected with code, for example, http://www.magicn.com/redirect/default.asp. Then, the terminal 110 is again http: // www. GET the magicn.com/redirect/default.asp page.

However, the aforementioned redirection method of the wireless mobile communication network executes two HTTP GET commands, which causes a waste of network resources for the wireless network provider, and also causes a delay of about 2-3 seconds for the user. In addition, the first GET instruction will incur a packet charge of approximately 1000 bytes or more. That is, in the conventional wireless mobile communication network, the communication between the terminal and the web server requires more time and more packet fees than the wired network.

 An object of the present invention for solving the above problems is to reduce the time to reach the wireless network by directly processing the response to the page redirect using a proxy server in the communication using the Hypertext Transfer Protocol (HTTP), wireless network resources It is to provide a communication method using a proxy server in a wireless mobile communication network that can prevent the waste of.

In addition, another object of the present invention is to provide a communication method using a proxy server in a wireless mobile communication network that can solve less packet charges and security problems by storing the cookie information of the hypertext client terminal in the proxy server or gateway. .

As a means for achieving the above object, a communication method using a proxy server according to the present invention, in the communication method in the proxy interlocked with the terminal and the web server through a wireless mobile communication network,

a) the proxy server processing a first page request message (Request) transmitted from the terminal to the web server;

b) receiving, by the proxy server, a first page response message transmitted from the web server to the terminal, and confirming whether the return code of the response message is a redirection related return code; And

c) if the return code of the response message is a redirect related return code, sending a second page request message to the web server by the proxy server;

Including but not limited to:

The second page response message may be transmitted to the terminal through the web server.

Here, the communication method using a proxy server according to the present invention, e) if the return code of the response message is not a redirect related return code, the proxy server further comprises the step of transmitting a first page response message to the terminal; It may include.

Here, the step a) may include: a-1) the proxy server intermittently receiving a first page request message transmitted from the terminal to the web server; a-2) storing, by the proxy server, request header information in the first page request message; And a-3) the proxy server transmitting the first page request message to the web server.

Here, the request message and response message is characterized in that the communication using a hypertext transfer protocol (HTTP), the request message and the response message is the end-to-end (End-to-End) between the HTTP protocol It is characterized in that communication using the WAP (Wireless Application Protocol) 2.0 or higher version using.

Here, the return code is a hypertext transfer protocol (HTTP) 300 (3xx) redirection-related return code, the HTTP 300 (3xx) redirection-related return code, the return for Multiple Choices (multiple selections) Code 300, Return code 301 for Moved Permanently, Return code 302 for Moved Temporarily, Return code 303 for See Other, Not Modified And a return code 304 for Use Proxy or Return Code 305 for Use Proxy.

Here, the step c) may include c-1) extracting the redirected URL or host server information from the proxy server; c-2) the proxy server replacing the extracted URL or host server information with information in a previously stored request header; And c-3) the proxy server sending a second request message with the replaced information to the web server.

Here, the proxy server may store cookie information of the first page or the second page.

According to the present invention, in communication using the hypertext transfer protocol (HTTP), a response to 300 page redirection of return codes is directly processed by using a gateway (proxy gateway) serving as a proxy server. By doing so, it is possible not only to reduce the time to go to the wireless network, but also to prevent waste of wireless network resources, and also to reduce unnecessary packet charges imposed on the user.

Hereinafter, a communication method using a proxy server in a wireless mobile communication network according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

As described above, since HTTP communication in a wireless mobile communication network uses a wireless network, the speed is much slower than that of the wired network, and the exchange rate is also higher than that of the wired network.

Here, the hypertext transfer protocol (HTTP) is an application layer protocol used in distributed information systems, comprehensive information systems, and hypermedia information systems. The hypertext transfer protocol (HTTP) is used in numerous tasks such as name servers and distributed object management systems through extension of request methods. It is a universal object-oriented protocol that can be used. The HTTP defines and negotiates the data representation format of a document so that the system can be built independently of the data being transmitted.

An embodiment of the present invention is to reduce the use of the wireless network for the case of redirecting 3xx times in the HTTP protocol. In other words, if the proxy server processes the redirected return code 3xx response directly, there are advantages of efficiency of the wireless network, reduction of delay, and reduction of packet charging.

First, the problem and the solution at the time of redirection are explained.

Referring back to FIG. 1, when the proxy gateway 230 processes the redirection, a problem with a cookie may occur. That is, although cookies are rarely used in the wireless Internet, there may be a problem in redirecting if there is a page using cookies in the web server 240.

For example, the description will be made separately for when not to redirect.

First, when the redirection is not performed, when the client terminal 110 requests a page A with a cookie of page A, when the web server 240 redirects to page B, the client terminal 110 reverts to page B. Since you are requesting page B with a cookie, there is no problem with the cookie.

Next, in the case of the redirection, when the client terminal 110 redirects the page A from the web server 240 to the page B at the time of requesting the page A, the proxy gateway 230 may determine the page A. You get a cookie and request page B. At this time, if there is no source using a cookie in page B, there is no problem, but if a cookie is used, a problem occurs.

In this case, since the proxy gateway 230 has a cookie of page A and requests page B, an error may occur if there is a source using the cookie on page B.

Therefore, in the embodiment of the present invention, in order to solve such a cookie problem, the client gateway is not stored in the terminal 110 and the proxy gateway 230 has all the problems, and the security problem may be solved. Will be. That is, when the proxy gateway 230 stores all the cookie information stored in the client terminal 110, such a cookie problem can be solved, and the client terminal 110 does not need to store the cookie separately. Therefore, since the need for transmitting cookies to the wireless network is eliminated, not only the amount of packets to be transmitted is reduced but also the security problem is solved.

Specifically, the method for performing redirection in the proxy server according to the embodiment of the present invention is a software method, and the client terminal 110 retains the HTTP header information when requesting the A page. When redirected to page B, the proxy gateway 230 converts the HTTP header information of the A page into the redirected server and page information.

As a result, the communication method using the proxy server in the wireless mobile communication network according to an embodiment of the present invention, the proxy gateway processes the 3xx number of redirects, so that less wireless network is used, so that the user can use the wireless Internet service more quickly at a lower cost In addition, the gateway stores the cookie information of the client, thereby solving less packet charges and security problems.

Meanwhile, FIG. 3 is a diagram illustrating a process in which a gateway (proxy gateway) serving as a proxy server according to an embodiment of the present invention processes the redirection.

First, when the terminal 110 requests a page A (S310), the web server 240 redirects a page called B (S320), and does not send this to the terminal 110 in the proxy gateway 230 in the middle. In response to the request B page to the web server (S330), and then, the web server 240 sends a response to B to the terminal 110 (S340). That is, if the proxy gateway 230 receives and directly processes the response to the page redirection of the return code 300 (3xx) of the http protocol to the terminal 110, it may reduce the time to the wireless network. In addition, it is possible to prevent the waste of wireless network resources, and also reduce unnecessary packet charging for the user.

In other words, in the wireless mobile communication network, the gateway 230 serving as a proxy server may be implemented by a software method to handle 300 (3xx) redirection. Therefore, the proxy gateway 230 has two processing routines for processing a web server 240 request message from the terminal 110 and a response message from the web server 240 to the terminal 110. .

First, the web server 240 request message processing routine in the terminal 110 is a routine for storing a request header and transmitting the request header to the corresponding web server 240 (see FIG. 4).

Next, the response message processing routine from the web server 240 to the terminal 110 transmits to the terminal 110 without doing anything when the return code is not 300 (3xx), and if the return code is 300 ( 3xx), the B page request is made to the web server 240 by changing only the URL (Uniform Resource Locator) of the B page redirected from the previously stored A page HTTP request header and the host server corresponding to the B page. Process to send (see Figure 5).

4 is a flowchart illustrating an operation of a proxy gateway processing an HTTP packet transmitted from a terminal according to an embodiment of the present invention.

Referring to FIG. 4, when a request message, which is an HTTP data packet, arrives at the proxy gateway 230 from the terminal 110 of the wireless mobile communication network (S410), the proxy gateway 230 may request the request message. The request header and the cookie are stored (S420), and then, the request message (Request) is forwarded to the web server 240 (Sward).

5 is a flowchart illustrating an operation of a proxy gateway that processes an HTTP packet transmitted from a web server according to an embodiment of the present invention.

In the above-described step S430, when the request message (Request) is transmitted to the web server 240, the web server 240 will respond to the request message (Response).

That is, in response to the request message from the web server 240, when the HTTP data packet arrives at the proxy gateway 230 (S510), it is checked whether the return code in the HTTP data packet is 300 (3xx). (S520).

If the return code is 300 (3xx), the proxy gateway 230 extracts the redirected URL, host and cookie from the data packet (S530). The extracted redirect URL, the host and the cookie are replaced with the URL, the host and the cookie information in the previously stored request header (S540).

Next, the proxy gateway 230 sends a request message to the web server 240 again (S550).

If the return code is not 300 (3xx), the proxy gateway 230 transmits the response message from the web server 240 to the terminal 110.

On the other hand, Figure 6 is a table illustrating an HTTP return code, the return code or status code (Status-Code) 3xx (300) indicated by reference numeral 610 refers to a code for the location or redirection, Specifically, return code 300 is Multiple Choices, 301 is Moved Permanently, 302 is Moved Temporarily, 303 is See Other, 304 is Not Modified. And 305 indicate Use Proxy, respectively.

Meanwhile, a communication method using a proxy server in a wireless mobile communication network according to an embodiment of the present invention cannot be used when the HTTP protocol is not between the terminal and the gateway. For example, the WAP (Wireless Application Protocol) 1.0 protocol can be used. none. However, if upgraded to the WAP 2.0 version, in this case the end-to-end (HTTP) protocol can be applied to the present invention.

While the invention has been shown and described in connection with specific embodiments thereof, it will be appreciated that various modifications and changes can be made without departing from the spirit and scope of the invention as indicated by the claims. Anyone who owns it can easily find out.

According to the present invention, when the 3xx redirection is processed by the gateway acting as a proxy server, the wireless network communication time is reduced, so that the user can use the wireless Internet service more quickly at a lower fee.

In addition, according to the present invention, the proxy gateway stores the cookie information of the client, thereby reducing data packet charges and solving security problems.

Claims (9)

In the communication method of the proxy interworking with the terminal and the web server through a wireless mobile communication network, a) the proxy server processing a first page request message (Request) transmitted from the terminal to the web server; b) receiving, by the proxy server, a first page response message transmitted from the web server to the terminal, and confirming whether the return code of the response message is a redirection related return code; And c) if the return code of the response message is a redirect related return code, sending a second page request message to the web server by the proxy server; Including but not limited to: The second page response message is transmitted to the terminal via the web server. The method of claim 1, e) if the return code of the response message is not a redirection related return code, transmitting a first page response message to the terminal by the proxy server; Communication method using a proxy server further comprising. The method of claim 1, wherein step a) comprises: a-1) intermediately receiving, by the proxy server, a first page request message transmitted from a terminal to a web server; a-2) storing, by the proxy server, request header information in the first page request message; And a-3) the proxy server sending the first page request message to the web server Communication method using a proxy server comprising a. The method of claim 1, And the request message and response message communicate using a hypertext transfer protocol (HTTP). The method of claim 4, wherein The request message and the response message communicate between end-to-end using a WAP (Wireless Application Protocol) version 2.0 or higher using the HTTP protocol. Way. The method of claim 1, The return code is a communication method using a proxy server, characterized in that the return code associated with the Hypertext Transfer Protocol (HTTP) 300 (3xx) redirection. The method of claim 6, The return code related to HTTP 300 (3xx) redirection includes return code 300 for Multiple Choices, return code 301 for Moved Permanently, and return code 302 for Moved Temporarily. Group containing return code 303 for See Other, return code 304 for Not Modified, or return code 305 for Use Proxy. Communication method using a proxy server, characterized in that selected from. The method of claim 1, wherein c) is c-1) extracting the redirected URL or host server information by the proxy server; c-2) the proxy server replacing the extracted URL or host server information with information in a previously stored request header; And c-3) the proxy server sending a second request message with the replaced information to the web server Communication method using a proxy server comprising a. The method of claim 1, And the proxy server stores the cookie information of the first page or the second page.

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