| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a communication method which can prevent the occurrence of collision to prevent the deterioration in performance even when the number of connected communication apparatuses increases and which can define the maximum delay of transmission to set the priority. <P>SOLUTION: When transmitting data to a PLC modem 100Ty, a PLC model 100Tx starts transmission in common timing in which all the PLC modems can perform transmission (S11). An ID number of a common ID is added to a data frame at such a time, and this ID number is detected by a master PLC modem 100M. The master PLC modem 100M assigns an individual ID to the PLC modem 100Tx and notifies it by a control frame (S30). The PLC modem 100Tx sets the notified individual ID and performs subsequent data frame transmission in timing corresponding to the notified individual ID (S41). <P>COPYRIGHT: (C)2009,JPO&INPIT |
