| 摘要 |
PROBLEM TO BE SOLVED: To provide the communication method by which efficient communication is more easily conducted while suppressing increase in power consumption. SOLUTION: A transmission station integrates number of negative acknowledgement signals (NAK) returned from each reception station (S31). A data transmission carrier level is decreased when the integrated NAK number does not reach a prescribed value and the NAK number is still zero (S32, 33, 34). However, even when the integrated NAK number does not reach a prescribed value but the NAK number is not zero, a current carrier level is maintained. On the other hand, when the integrated NAK number reaches a prescribed value or over, the data transmission carrier level is increased (S32, 35). |
