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Wireless communication apparatus and wireless communication method

A wireless communication device and wireless communication technology are applied in transmission systems, electrical components, etc., and can solve problems such as communication quality deterioration.

Active Publication Date: 2012-09-26
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in this wireless communication device, other strong signals outside the frequency band of the 2.4 GHz band may become interference signals, deteriorating the communication quality of the desired wave.

Method used

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  • Wireless communication apparatus and wireless communication method
  • Wireless communication apparatus and wireless communication method
  • Wireless communication apparatus and wireless communication method

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Experimental program
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no. 1 Embodiment approach

[0020] One of the features of this embodiment is that, when a jamming signal is detected during the jamming wave detection period before starting wireless communication, frequency hopping is performed so as not to select a channel whose wireless communication is disturbed by the jamming signal.

[0021] figure 1 It is a block diagram showing a schematic configuration of the wireless communication device according to the first embodiment of the present invention. Such as figure 1 As shown, the wireless communication device 100 includes an antenna 10 , a switching unit 11 , a receiving unit 12 , an oscillator 13 , a signal processing unit 14 , and a transmitting unit 15 . The receiving unit 12 has a first amplifier 21 , a mixer 22 , a filter 23 , a second amplifier 24 , and an interference wave detection circuit 30 . The signal processing unit 14 has a communication control unit 40 .

[0022] The wireless communication device 100 performs time-sharing wireless communication w...

no. 2 Embodiment approach

[0056] This embodiment differs from the first embodiment in that the interference wave detection period is set to a period between transmission and reception during wireless communication with another wireless communication device.

[0057] That is, in the wireless communication device of this embodiment, the function of the communication control unit 40 is the same as figure 1 The first embodiment is different. Due to other composition and figure 1 Since the first embodiment is the same as the first embodiment, the same elements are given the same reference numerals and illustrations and descriptions are omitted.

[0058] Figure 5 It is a flowchart showing the operation (generation of the channel map M) of the wireless communication device according to the second embodiment of the present invention. First, the communication control unit 40 checks the frequency of the detected interference wave signal in the period between transmission and reception (interference wave dete...

no. 3 Embodiment approach

[0067] Such as Figure 6 As shown, the wireless communication device of this embodiment and figure 1 The difference of the first embodiment is that the output of the first amplifier 21 is connected to the coupler 31 of the interference wave detection circuit 330 in the receiving unit 312 . due to other components and figure 1 Since the first embodiment is the same as the first embodiment, the same reference numerals are assigned to the same elements, and description thereof will be omitted. With this configuration, the interference wave detection circuit 330 can also detect an interference wave signal at the detection frequency included in the input signal Sin received during the interference wave detection period in which the reception signal Srx is not received from another wireless communication device.

[0068] The timing of detecting the interference wave signal is the same as that of the first embodiment or the second embodiment. That is, the wireless communication de...

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PUM

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Abstract

The present invention relates to a wireless communication apparatus and a wireless communication method. According to an embodiment, a wireless communication apparatus includes a communication control unit, a transmitting unit and a receiving unit. The communication control unit selects one frequency channel from a plurality of frequency channels and switches the frequency channel to be selected. The receiving unit is configured to receive a reception signal of the selected frequency channel from another wireless communication apparatus. The receiving unit includes an interference wave detection circuit configured to detect an interference wave signal of a detection frequency. The interference wave signal is included in an input signal received during an interference wave detection period. In the interference wave detection period, the reception signal is not received. The communication control unit masks a frequency channel related to the detection frequency among the plurality of frequency channels to create a frequency channel map. The communication control unit does not select the masked frequency channel.

Description

[0001] This application is based on and claims the benefit of priority of the prior Japanese Patent Application No. 2011-068390 filed on March 25, 2011, the entire contents of which are incorporated herein by reference. technical field [0002] Embodiments of the present invention relate to a wireless communication device and a wireless communication method. Background technique [0003] As a wireless communication device using a frequency hopping method, for example, a wireless communication device compatible with Bluetooth (registered trademark) is known. This wireless communication device selects one channel from a plurality of channels defined in the frequency band of the 2.4 GHz band, and switches the selected channel as time passes. Furthermore, wireless communication is performed with other wireless communication devices using the selected channel. [0004] The above-mentioned frequency bands are also used, for example, in wireless LANs. Therefore, when the frequenc...

Claims

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Application Information

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IPC IPC(8): H04B1/715
CPCH04B1/715
Inventor 藤木裕之
Owner KK TOSHIBA
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