WIRELESS COMMUNICATION DEVICE AND WIRELESS COMMUNICATION SYSTEM

• US 20130184020A1
• Filed: 01/28/2011
• Published: 07/18/2013
• Est. Priority Date: 01/28/2011
• Status: Active Grant

• Current Assignee: Mitsubishi Electric Corporation
• Original Assignee: Mitsubishi Electric Corporation
• Inventors: Hoshihara, Yasunori, Nakano, Hisao
• Granted Patent: US 9,253,657 B2
• Time in Patent Office: Days
• US Class Current: 455/501
• CPC Class Codes: H04W 16/14 Spectrum sharing arrangements between different networks
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: H04W 72/541 using the level of interference

Abstract

A wireless communication device includes first wireless communication unit 2 for performing wireless communication with information terminal 21 through wireless LAN, and for obtaining frequency channel of interference wave by detecting interference wave due to wireless communication through wireless LAN between information terminal 24 and portable information terminal 25; second wireless communication unit 3, third wireless communication unit 4, . . . , nth wireless communication unit 5 for performing wireless communication with mobile terminal 22 or wireless headphone 23 by Bluetooth or wireless audio; channel aggregation unit 10 for setting the frequency channel of first wireless communication unit 2 at the same frequency channel as the frequency channel of interference wave the first wireless communication unit 2 obtains; and assignment control unit 9 for allocating frequency channels of the second, third, . . . , nth wireless communication units 3, 4, 5 at frequency channels other than frequency channel the channel aggregation unit 10 sets.

Claims

1. A wireless communication device that carries out wireless communication with a plurality of pieces of communication equipment, the wireless communication device comprising:

a wireless LAN communication unit for carrying out wireless communication with the communication equipment through a wireless LAN, and for detecting an interference wave due to wireless communication through a wireless LAN to obtain a frequency channel of the interference wave;

a wireless communication unit for carrying out wireless communication based on a communication scheme using a same frequency band as a frequency band of the communication equipment and the wireless LAN;

a channel aggregation unit for setting a frequency channel of the wireless LAN communication unit at a same frequency channel as the frequency channel of the interference wave the wireless LAN communication unit obtains; and

an assignment control unit for allocating a frequency channel of the wireless communication unit to a frequency channel other than the frequency channel the channel aggregation unit sets.

2. The wireless communication device according to claim 1, further comprising:

an interference detecting unit for deciding on whether the interference wave due to the wireless communication through the wireless LAN deteriorates communication quality of the wireless communication through the wireless LAN of the wireless LAN communication unit, wherein

the wireless LAN communication unit obtains an interference level of the interference wave;

the interference detecting unit decides on whether the interference level of the interference wave the wireless LAN communication unit obtains is not less than a threshold or not; and

the channel aggregation unit sets, when the interference detecting unit decides that the interference level of the interference wave is not less than the threshold, the frequency channel of the wireless LAN communication unit at the same frequency channel as the frequency channel of the interference wave the wireless LAN communication unit obtains.

3. The wireless communication device according to claim 1, further comprising:

a storage unit for storing a frequency channel with a low interference tolerance for the interference wave due to the wireless communication through the wireless LAN in a communication scheme that employs a same frequency band as the wireless LAN, wherein

the assignment control unit allocates the frequency channel of the wireless communication unit to a frequency channel other than the frequency channel with the low interference tolerance stored in the storage unit.

4. A wireless communication system including a plurality of pieces of communication equipment and a wireless communication device for carrying out wireless communication with the plurality of pieces of the communication equipment, wherein the wireless communication device comprises:

a wireless LAN communication unit for carrying out wireless communication with the communication equipment through a wireless LAN, and for detecting an interference wave due to wireless communication through a wireless LAN to obtain a frequency channel of the interference wave;

a wireless communication unit for carrying out wireless communication based on a communication scheme using a same frequency band as a frequency band of the communication equipment and the wireless LAN;

a channel aggregation unit for setting a frequency channel of the wireless LAN communication unit and a frequency channel of the communication equipment that carries out the wireless communication through the wireless LAN among the plurality of pieces of the communication equipment at a same frequency channel as the frequency channel of the interference wave the wireless LAN communication unit obtains; and

an assignment control unit for allocating a frequency channel of the wireless communication unit to a frequency channel other than the frequency channel the channel aggregation unit sets.