| 摘要 |
PURPOSE:To transmit data having high priority with short delay by weighting the mean values of the probability of immediate data transmission and/or waiting time according to the priority of data. CONSTITUTION:A signal from the terminal device 1 of a station S is sent to an optical mixer 29 through an interface 22, optical transmission and reception part 23, and transmitting fiber 251 and distributed nuiformly by the mixer 29 to receiving fibers 261, 262-, and sent to optical transmission and reception parts 23 of respective stations. A signal from a station S is sent to the mixer 29 through a fiber 252. Thus, signals from the respective stations are distributed to the respective stations through the mixer 29. Through this processing, a station with higher priority increases the probability of random numbers for transmission and decreases the mean value of waiting time and a station with lower priority, on the other hand, decreases the probability and increases the mean value of the waiting time. |
