| 摘要 |
<p>PROBLEM TO BE SOLVED: To reduce interference to other communication channels by omitting signal transmission at an improper power or useless transmission. SOLUTION: Reception power is measured in the step 101. A initial value IP and an increment PI of transmission power are decided from the measured reception power in the step 102. The transmission scheduled power P is set to the initial value in the step S103. Whether or not the transmission frequency exceeds a preset number N is checked in the step 104, and when exceeded, the process returns to the step 103, and when not exceeded, the process enters the step 105 and a test signal is sent on the transmission scheduled power P. After the transmission of the test signal, the process goes to the step 106 and a reception signal ACK to be sent from an opposite station is awaited for a prescribed time. When the ACK is not received within a prescribed time, the process goes to the step 107 and the transmission scheduled power P is incremented by PI and the process returns to the step 104. In the case the ACK is received within a prescribed time, the process enters the step 108 and the transmission data body is sent on the transmission scheduled power P.</p> |
