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Communication device, communication system and communication frequency setting method

A communication device, communication frequency band technology, applied in wireless communication, communication between multiple stations, data exchange through path configuration, etc., can solve problems such as increasing labor costs and difficulty in taking quick solutions

Inactive Publication Date: 2005-04-20
FUJITSU FRONTECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, it is difficult to take a prompt solution to deal with the interference emission, and the labor cost is increased

Method used

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  • Communication device, communication system and communication frequency setting method
  • Communication device, communication system and communication frequency setting method
  • Communication device, communication system and communication frequency setting method

Examples

Experimental program
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Embodiment 2

[0051] The above-mentioned first embodiment has described the case where there is one wireless base station, but when there are two or more wireless base stations, frequency bands (channels) used by one wireless base station may interfere with each other, thereby deteriorating their communication status . The second embodiment of the present invention is for dealing with the situation of avoiding mutual interference due to frequency bands (channels) used by a plurality of base stations.

[0052] Figure 8 is a block diagram showing the overall configuration of a communication system according to a second embodiment of the present invention. Figure 9 to show in more detail Figure 8 Block diagram of the communication system. Figure 10 is a block diagram showing an example of the operating channel setting section of each base station. Here, note that in these figures, with Figure 1 to Figure 3 The same designation as the Figure 1 to Figure 3 The same or corresponding p...

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PUM

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Abstract

A communication device is applicable to a communication system such as a wireless LAN, and can always establish good communication in an automatic and prompt manner regardless of the presence or absence of interference emission, thereby eliminating manual operations and achieving low cost. The communication device is capable of wireless communication with terminal equipment (1A, 1B). The channel setting section (31) is capable of setting a plurality of communication frequency bands, and takes a specific communication frequency band as a default value. The signal-to-noise ratio detection section (34) detects communication states of a plurality of communication frequency bands that can be set by the channel setting section (31) by detecting the signal-to-noise ratio. The channel selection section (36) selects a communication frequency band with a higher SNR among a plurality of communication frequency bands according to the communication state detected by the SNR detection section (34), thereby enabling the channel setting section (31) to set the thus selected Communication frequency band, used for communication.

Description

technical field [0001] The present invention relates to a communication device used in shops, houses, etc., and as a medium for performing communication between an upstream device such as a telephone exchange, an exchange, a server, etc., and a downstream device such as a portable terminal device. repeater, and more specifically, it relates to a communication device, a communication system, and a communication frequency setting method for arbitrarily or appropriately changing an operating communication frequency band to perform communication in a good state, and to avoid interference emission, etc. Impact. Background technique [0002] There has been known a communication system (for example, a wireless LAN system) in which in a case where wireless or radio frequency communication is performed in a house, a store, etc., in a partial section or range between an upstream device and a downstream device , providing a repeater, wireless or radio frequency base station, which is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/28H04W72/54H04W76/02H04W84/12H04W88/08
CPCH04W24/00H04W72/02H04W84/12H04W76/10H04W72/54H04W72/23
Inventor 川合弘晃
Owner FUJITSU FRONTECH LTD