Network and its management method

Abstract

The present inventon provided a highly convenient network by eliminating the problems of interference, leak, tapping, and band occupation, and the problem of network connection to one's own system in a shared space, and to provide its management method. A management server 1 registers relating information between additional information such as a VLAN tag or VPN header to be added to a packet and identification information such as an SSID, and writes the relating information in whole radio access points 3a-3d. Radio terminals 5a-5c, 5a', 5b' performs radio communication with one of the access points 3, so that the additional information such as the VLAN tag related to the identification information such as the SSID is added to the packet and transmitted to a backbone. On the contrary, when the communication is performed with the applicable radio terminal by using the identification information corresponding to the additional information of the packet received from the LAN in the system, the terminal becomes communicable with a server, etc. , which is connected to the LAN of one's own system.

Description

technical field [0001] The present invention relates to a network and its management method which share a part of the network in multiple units and can utilize each other. Background technique [0002] In general, since wireless LAN devices are easy to set up and can be easily set up before starting to use, their use has rapidly expanded in recent years. [0003] For example, the wireless LAN devices are installed or configured one by one for each unit of tenants in an office building, or for each department in a company building. [0004] In the wireless LAN using the above-mentioned wireless devices, in order to avoid mutual interference between other adjacent wireless LAN devices, the following countermeasures are taken. [0005] (1) Use CDMA / CA to avoid communication conflicts. [0006] (2) Set a group identifier (ESSID) to distinguish it from other device groups to avoid radio interference (see Non-Patent Document 1). [0007] (3) Use the FDMA function to automatical...

AI Technical Summary

Problems solved by technology

[0011] (1) Even if the aforementioned functions for preventing interference with existing wireless LAN devices are used, mutual interference may occur depending on the size of the wireless LAN device or the method of operation

[0012] (2) Wireless space cannot be used effectively and wastes a lot

so the response becomes slower

[0013] (3) When a certain problem occurs on the network used by the wireless LAN, the other party who should adjust it is not clear

[0014] (4) Even if you know the interference with other nearby wireless LAN devices, it is easy to leak mutual secrets when adjusting with the other party

[0015] (5) Depending on the usage status of the wireless LAN, the frequency band (communication speed), etc. are difficult to be interchanged

[0016] (6) Every unit needs to spend time maintaining network operations or ensuring security. If you do not have the correct knowledge to expand or use the network, there will be dangers such as eavesdropping

[0017] (7) The communication frequency bands (speeds) cannot be interchanged with each other and can only be occupied if they are available, so it is difficult to form a structure that pays according to the amount of usage, such as electricity or gas.

[0018] (8) For example, in a space shared by multiple units, the network cannot be used

[0019] Although the above problem mainly refers to the problem caused by the use of wireless LAN, the same problem as the above (8) also occurs on wired LAN.

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