Patent ID: 8559548

Claim:
A radio communication device comprising: a receiver for receiving data; a radiation detector for detecting electromagnetic interference (EMI) radiation from the data received by the receiver; a timing detector for detecting a stopping time of EMI radiation; a controller for changing a normal communication mode into an avoidance communication mode in response to EMI radiation detected by the radiation detector; a transmitter for preparing a transmission packet in the avoidance communication mode so as to satisfy expressions of T 1 =(T 0 /2)/M and T 2 =T 0 /2 (where T 1 represents a time required for transmission; T 2 represents a cycle of transmission; T 0 represents a cycle of an AC power source; and M≧4); a transmission power changer for determining a transmission power of the transmission packet in the avoidance communication mode by multiplying T 2 /T 1 to a transmission power in the normal communication mode; and a transmission rate changer for determining a transmission rate of the transmission packet in the avoidance communication mode by multiplying T 2 /T 1 to a transmission rate in the normal communication mode, wherein, the transmitter transmits the transmission packet so as to be synchronized with the stopping time of EMI radiation.