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Relay server and relay communication system

A relay communication, server technology, applied in transmission systems, digital transmission systems, instruments, etc., can solve problems that are not easy to deal with and not easy to achieve.

Active Publication Date: 2008-06-18
MURATA MASCH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the communication system is connected to multiple LANs across the WAN, it is not easy to deal with sharing resources such as folders and files between multiple terminals, or deleting files held by other terminals from one terminal.
It is even more difficult to deal with when the protocol used in each LAN is different
[0006] In addition, it is not easy to realize: although the resources held by each terminal are constantly changing due to deletion and movement, etc., it can also dynamically respond to these changes

Method used

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  • Relay server and relay communication system
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  • Relay server and relay communication system

Examples

Experimental program
Comparison scheme
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no. 1 Embodiment approach }

[0088] FIG. 1 is a diagram illustrating an example of the overall configuration of a relay communication system according to the present embodiment. As shown in FIG. 1, this relay communication system is composed of a plurality of LANs connected to a WAN. This relay communication system includes an external server S, a relay server R, a client terminal T, a file server F, and the like. In addition, although the embodiment using the external server S was exemplified here, a system in which relay servers R directly communicate without using the external server S may also be used.

[0089] In this embodiment, the communication protocol between the external server S in the WAN and each relay server R, and between the relay server R in the LAN and the client terminal T, etc., is described by way of example. SIP (Session Initiation Protocol: Session Initiation Protocol) system. However, a protocol other than SIP may be used as a communication protocol between these servers and ter...

no. 2 Embodiment approach }

[0192] This embodiment is a more dynamic relay communication system that can cope with changes in the connection state between the relay server R and the client terminal T, and sudden failures.

[0193] The basic structure of each component of the relay communication system such as the relay server R, the client terminal T, and the flow of each communication process is the same as that of the first embodiment. Next, this embodiment will be specifically described with reference to the flowchart in FIG. 20 and the sequence diagram in FIG. 21 .

[0194] FIG. 20 is a diagram showing each process of operation confirmation performed by the relay server R. As shown in FIG. FIG. 21 is an example of a flow of communication processed in the relay communication system when performing this confirmation operation. FIG. 21 shows a case where the relay server R1 confirms the operation of the relevant relay server R and a connection failure occurs in the relay server R3. In addition, FIG. 2...

no. 3 Embodiment approach }

[0227] This embodiment is a more dynamic relay communication system. Even if the client terminal T registered in any LAN moves to another LAN, it does not need to perform cumbersome operations such as setting changes, and can directly register without being noticed. and handle resources.

[0228] The configuration of each part of the relay communication system such as the relay server R, the client terminal T, and the basic configuration of the flow of each communication process are the same as those of the first embodiment. Hereinafter, this embodiment will be concretely described centering on the sequence diagrams of FIGS. 28 and 29 .

[0229] 28 and 29 show an example of the flow of communication processing when the client terminal T registered in any LAN moves and connects to another LAN. Specifically, a case is shown in which the client terminal 1A registered in the relay server R1 of LAN1 is deregistered and re-registered in the relay server R2 of LAN2.

[0230] FIG. 3...

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PUM

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Abstract

The present invention provides a relay server and a relay communication system, in the relay communication system the terminal of different LAN can execute the sharing and operation of the resource to the necessary object if necessary, the relay communication system has excellent expandability and flexibility and comprises a relay server (R) that can communicate with the relay server (R) of other LAN. The relay server (R) stores the account information of the client terminal (I) in the LAN, the relay group information (100) of a group of relay server (R) and the shared resource information (120) of the account of the client terminal (T) that includes the resource and shares the resource. The relay group information (100) and the shared resource information (120) comprise the state information (107 and 127) representing the relay server (R) and the like. The relay server (R) does action confirming timely and automatically updates the state information (107 and 127).

Description

technical field [0001] The present invention relates to a relay communication system enabling terminals in a local area network (LAN) to communicate across a wide area network (WAN) and a relay server used in the system. In particular, it relates to a communication technology that enables a terminal in a certain LAN to operate resources held by a terminal in another LAN. Background technique [0002] There is a communication technology called VPN (Virtrua Private Network: Virtual Private Network). Using this communication technology, it is possible to use another LAN that is far away as a directly connected network. For example, it is possible to communicate across the Internet between terminals connected to the LANs of a plurality of branch offices installed in various regions. [0003] Regarding this technique, various systems have been proposed so far (for example, Japanese Patent Application Laid-Open No. 2002-217938). [0004] However, such a system tends to become a...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L12/46H04L12/28G06F13/00
Inventor 谷本好史
Owner MURATA MASCH LTD
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