Wireless communication apparatus and interference avoidance method

摘要

A wireless communication apparatus in a first wireless system is provided with first, second and third units, and a controller. The first unit transmits frames over a frequency channel using a short or long IFS as compared with a specific one used in a second wireless system with a communication range wider than the first wireless system. The second unit receives frames over the channel. The third unit determines an error characteristic in the received frames and/or a busy status of the channel. The controller controls at least either one of whether to change the frequency channel or not, and whether to change a duration of an interframe space or not.

主权项

1. A wireless communication apparatus for use in a first wireless communication system, wherein the first wireless communication system may be interfered with by a second wireless communication system, a communication range of the second wireless communication system being wider than a communication range of the first wireless communication system, the wireless communication apparatus comprising:
a controller, which is configured to:
transmit, via an antenna, first frames, using a frequency channel selected from a plurality of frequency channels, and using a short interframe space or a long interframe space as compared with an interframe space of a specific type of frame used in the second wireless communication system;receive, via the antenna, second frames using the frequency channel;determine at least one of an error characteristic in the second frames and a busy status of the frequency channel; and select and execute, based on at least one of the error characteristic and the busy status, at least one control process from among a plurality of control processes including (i) a control process to change the frequency channel, (ii) a control process to change a duration of an interframe space, and (iii) a control process to change neither of the frequency channel and the duration.