| 摘要 |
<P>PROBLEM TO BE SOLVED: To control a communication condition so as not to be affected by a noise source by specifying a position and a noise level of the noise source by respective communication terminals, in a radio communication system in which the plurality of communication terminals perform radio communication through a common radio communication channel. <P>SOLUTION: Communication terminals 6a and 6c measure the noise level around the present terminal, radio-transmit noise level data and position information of the present terminal, and update a noise map describing the noise level for each division area for which a map area including the present terminal is divided into plural using the noise level data and the position information measured in the present terminal and noise level data and position information acquired from the other communication terminal. Then, by analyzing the noise map, the positions, noise levels, moving directions and speeds of noise sources 6b and 6d are specified, a communication parameter is controlled so as not to be affected by the noise sources, and a user is instructed to move away from the noise sources. <P>COPYRIGHT: (C)2012,JPO&INPIT |
