JPH1168820A - Data communication network - Google Patents

Abstract

(57) [Problem] To provide a data communication network which can be connected to a high-speed and high-security wide-area communication network, in order to solve the drawbacks of the conventional network configuration in the Internet. An internet server includes a network switching device.
Via the Internet 2 to an Internet service provider 3, while the user terminal 4
It is connected to the Internet service provider 3 via a network switching device 8 provided in the access network 5. Further, the Internet server 1 is connected via the network switching device 7,
The access terminal 9 is connected to the wide area communication network 10 via the access network 9, while the user terminal 4 is connected to the wide area communication network 10 via the network switching device 8 provided in the access network 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data communication network, and more particularly to a data communication network combining the Internet and a wide area communication network.

[0002]

2. Description of the Related Art The Internet is a TC, which connects a plurality of networks combined with computers to each other.
In a worldwide network using the P / IP protocol, more information is shared by various people around the world. In addition, a user connected to the Internet can receive various services through an unspecified number of various Internet servers connected to the Internet. FIG. 2 shows a conventional network configuration example in which a user terminal is connected to an Internet server via the Internet. In the figure, an Internet server 1 connects to an Internet service provider 3 via the Internet 2, while a user terminal 4 connects to an Internet service provider 3 via an access network 5. The network thus configured operates as follows. In order to receive services via the Internet, users must first subscribe to a telephone line or ISDN.
It is connected to an Internet service provider 3 via an access network 5 composed of a line or the like. Further, by connecting to a predetermined Internet server 1 via the Internet 2 from the Internet service provider 3,
Users receive the services they need.

[0003]

However, the line capacity of the Internet upstream from the Internet service provider is limited, and when the number of users connected to the Internet increases, the communication of each user is secured in order to secure the communication of each user. Limit the speed. Therefore, if there are many users connected at the same time, the communication speed becomes slow.
For example, when downloading a large file from an Internet server, the access network between the user terminal and the Internet service provider guarantees a predetermined communication speed, and the line is individually assigned to the user, so there is no problem. The communication speed of the upper line greatly changes depending on the use condition, and as a result, the communication speed may become lower than the communication speed of the access network. For this reason, there has been a problem that the communication capability of the Internet server or the user terminal cannot be sufficiently exhibited, and it takes a long time to download a large-capacity file.

[0004] Each line on the Internet has a TC
Data transmitted and received by an unspecified number of users are mixedly flowing according to the P / IP protocol, and data required by the user is fetched from the data. This may be a security problem, because it is possible to peep at other people's data without permission. Therefore, high security technology is required to secure security on the Internet. SUMMARY OF THE INVENTION The present invention has been made to solve the above-described drawbacks of the conventional network configuration in the Internet, and an object of the present invention is to provide a data communication network that can support a high-speed and high-security network.

[0005]

In order to achieve the above object, a data communication network according to the present invention comprises a network switching device installed in each of an Internet server and a user terminal, connecting the Internet server to the Internet, and providing an Internet service provider. And a function of providing an Internet service to a user via the access network by connecting the Internet server to a wide area communication network different from the Internet via an access network. It is configured to be selectable by control from the user terminal. This allows the user to connect to the Internet server via a wide area communication network such as a circuit-switched network or packet-switched network that guarantees high transmission quality and security as necessary, and reduces the communication speed. A highly secure service can be received without inviting.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings. FIG. 1 is a schematic configuration diagram of a data communication network according to the present invention. In FIG. 1, an Internet server 1 connects to an Internet service provider 3 via the Internet 2 via a network switching device 7. On the other hand, the user terminal 4 connects to the Internet service provider 3 via the network switching device 8 provided in the access network 5. Further, the Internet server 1 is connected to the wide area communication network 10 via the access network 9 via the network switching device 7, while the user terminal 4 is connected via the network switching device 8 provided on the access network 5. Wide area communication network 1
Connect to 0. With the network configured in this way, the Internet server 1 and the user terminal 4 have means for connecting and communicating with the Internet 2 or the wide area communication network 10, respectively.

The network will be described in the case where the user terminal 4 downloads a large-capacity file from the Internet server 1 via the high-quality wide area communication network 10. First, the user uses the user terminal 4 to connect to the Internet service provider 3 via the network switching device 8 provided in the access network 5 constituted by a subscriber telephone line, an ISDN line, or the like. Next, the Internet service provider 3 connects to a predetermined Internet server 1 via the network 2 via the Internet 2.
Subsequently, the user terminal 4 requests the Internet server 1 to download a large file as a service menu. In response to the request, the Internet server 1 can take the following two embodiments to perform communication via the wide area communication network, and the user can select one of them. The network switching devices 7 and 8 are normally connected to the Internet 2 side.

(A) The user terminal 4 notifies the Internet server 1 of its access number via the wide area communication network 10 during communication via the Internet 2. Next, the Internet server 1 connects to the user terminal 4 via the wide area communication network 10 using the notified access number. To explain this mode, when a user terminal 4 makes a request for downloading a large-capacity file, the user terminal 4 sends the access number of the terminal itself via the wide area communication network 10 to the Internet 2.
Is notified to the Internet server 1 during communication via. Internet server 1 notified of access number
Uses the access number, switches the network switching device 7 to the wide area communication network side, and requests the wide area communication network 10 to connect to the user terminal 4 via the access network 9. Further, the network switching device 8 provided in the access network 5 that has received the connection request from the wide area communication network 10 identifies the request content, and switches the connection with the user terminal 4 from the Internet service provider 3 to the connection with the wide area communication network 10. Switch. At this time, it is possible to select whether to disconnect or hold the line to the Internet service provider 3 that was previously connected, according to the user's request. When a connection is established between the Internet server 1 and the user terminal 4 via the wide area communication network 10 in this manner, the Internet server 1 starts downloading a large-capacity file to the user terminal 4. When the downloading of the large-capacity file is completed, the Internet server 1 switches the connection of the network switching device 7 back to the Internet 2 and disconnects the line connected to the wide area communication network 10 via the access network 9. Wide area network 1
The network switching device 8 provided in the access network 5 that has received the disconnection request from 0 disconnects the line with the wide area communication network 10 and returns the connection to the Internet 2 side. At this time, if the line with the Internet service provider 3 has been held at the request of the user, the line is restored. Otherwise, the line to the user terminal 4 is also disconnected.

(B) The Internet server 1 is connected to the Internet server 1 via the wide area communication network 10 in advance.
A method in which an access number to the Internet server 1 is disclosed, and the user terminal 4 uses the access number to reconnect to the Internet server 1 via the wide area communication network 10. To explain this mode, the user terminal 4 uses an access number to the Internet server 1 via the wide area communication network 10 published on the Internet, and through a network switching device 8 provided in the access network 5. It requests the wide area communication network 10 to connect to the Internet server 1. Here, the network switching device 8 provided in the access network 5 switches the connection with the user terminal 4 from the Internet service provider 3 to the connection with the wide area communication network 10. At this time, it is possible to select whether to disconnect or hold the line with the Internet service provider 3 that was previously connected, according to the user's request. The wide area communication network 10 requests the access network 9 to connect to the Internet server 1 based on the access number, and when the network switching device 7 responds via the access network 9, the network switching device 7 Is switched from the Internet 2 to the connection with the wide area communication network 10. When a connection is established between the Internet server 1 and the user terminal 4 via the wide area communication network 10 in this manner, the Internet server 1 starts downloading a large-capacity file to the user terminal 4. When the downloading of the large-capacity file is completed, the user terminal 4 disconnects the line connected to the wide area communication network 10 via the access network 5. Here, the network switching device 8 provided in the access network 5 disconnects the line with the wide area communication network 10 and switches the connection back to the Internet 2 side. Internet server 1
The connection of the network switching device 7 is switched back to the Internet 2 side, and the Internet server 1 is released from the wide area communication network 10. At this time, if the line with the Internet service provider 3 has been held at the request of the user, the line is restored. Otherwise, the line to the user terminal 4 is also disconnected.

[0010] Thus, the data communication network 6 according to the present invention.
Has made it possible to connect to a wide area communication network 10 which is a high-quality network, but it is naturally possible to perform conventional downloading via the Internet 2 by the Internet server 1. The providers of the access network 5, the access network 9, and the wide area communication network 10 may be the same carrier or different. Although the present invention has been described above by way of an example in which the present invention is applied to the downloading of a large-capacity file, the present invention is not limited to this, and may be other services.

[0011]

As described above, the present invention is constructed as described above. Therefore, by adding a function of connecting to a wide area communication network other than the Internet to an Internet server for providing Internet services, high speed and high security can be achieved. Communication can be realized, and it is extremely effective in providing services that cannot be provided on the Internet.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a network configuration example according to the present invention.

FIG. 2 is a schematic diagram showing an example of an Internet configuration according to the related art.

[Explanation of symbols]

1 ... Internet server 2 ... Internet 3 ... Internet service provider
4 user terminal, 5 access network, 6
... Data communication network, 7 ... Network switching device, 8 ...
・ Network switching device, 9 ・ ・ ・ Access network, 10 ・ ・ ・ Wide area communication network,

Claims (1)

[Claims] A network switching device is installed in each of an Internet server and a user terminal, a function of connecting an Internet server to the Internet, providing an Internet service to a user through an Internet service provider, and a function of connecting the Internet server to an access network. A data communication network connected to a wide area communication network different from the Internet, and a function of providing an Internet service to a user via the wide area communication network can be selected by control of the user terminal. .