Wireless communication device and control method therefor

• US 20060217125A1
• Filed: 03/23/2006
• Published: 09/28/2006
• Est. Priority Date: 03/24/2005
• Status: Active Grant

• Current Assignee: Sony Computer Entertainment Incorporated (Sony Group Corp.)
• Original Assignee: Sony Computer Entertainment Incorporated (Sony Group Corp.)
• Inventors: Miyazaki, Yoshio
• Granted Patent: US 7,577,450 B2
• Time in Patent Office: Days
• US Class Current: 455/453
• CPC Class Codes: H04W 74/0808 using carrier sensing, e.g. carrier sense multiple access [CSMA]

Abstract

A wireless communication device for carrying out wireless communication using any one of a plurality of channels, wherein for at least some of the plurality of channels, energy threshold values for determining whether or not a channel is busy is set for each channel. With respect to these energy threshold values, generally an energy threshold value set in at least one channel is set different to an energy threshold value set in another channel.

Claims

1. A wireless communication device for carrying out wireless communication using any one of a plurality of channels, wherein

for at least some of the channels, an energy threshold value is set for each channel in order to determine whether or not a channel is busy, and an energy threshold value that has been set in at least one channel is different to an energy threshold value set in other channels.

2. The wireless communication device of claim 1, wherein

selectable communication speed setting values are determined based on the energy threshold values.

3. The wireless communication device of claim 1, wherein

the energy threshold values are set by selecting any one of a plurality of candidate values.

4. A wireless communication device for carrying out wireless communication using any one of a plurality of channels, comprising:

a device for dividing the respective channels into a plurality of groups, and determining and setting energy threshold values for determining whether or not a channel is busy for each of the groups based on a predetermined method,

a device for selecting a channel used in wireless communication, and

a device for acquiring an energy threshold value being set in a group corresponding to the selected channel, and carrying out control so that signal transmission is restricted while a signal in excess of the acquired energy threshold value is being received in the selected channel.

5. A wireless communication device, wherein

before commencing wireless communication, in a channel used for communication, among a plurality of channels, an energy threshold value for determining whether or not the channel is busy is determined, and

wireless communication is carried out via the usage channel, using the determined energy threshold value.

6. A wireless communication device for carrying out wireless communication selectively using any one of a plurality of channels, wherein

in a state where a selected channel is not busy, among energy threshold values of a plurality of steps, energy threshold values that determine that the channel is not busy, being energy threshold values of stages adjacent to energy threshold values that erroneously determine that the channel is busy, are detected, and the detected energy threshold values are used set as energy threshold values for determining whether or not the selected channel is busy.

7. A control method for a wireless communication device for carrying out wireless communication using any one of a plurality of channels, wherein

for at least some of the channels, energy threshold values for determining whether or not each channel is busy is determined and set for each of the at least some channels, based on a predetermined method.