COMMUNICATION SYSTEM, STATION-SIDE OPTICAL LINE TERMINATING APPARATUS, USER-SIDE OPTICAL LINE TERMINATING APPARATUS, CONTROL APPARATUS, AND COMMUNICATION METHOD

摘要

AN OPTICAL COMMUNICATION SYSTEM THAT CONNECTS A PLURALITY OF USER-SIDE OPTICAL LINE TERMINATING APPARATUSES (10-1 TO 10-N)(HEREINAFTER REFERRED TO AS ONUs) TO A STATION-SIDE OPTICAL LINE TERMINATING APPARATUS (1) (HEREINAFTER REFERRED TO AS OLT) USING A COMMON OPTICAL FIBER (30), WHEREIN THE ONU (10-1 TO 10-N) (10-1) AS AT LEAST A PART OF THE ONUs (10-1 TO 10-N) INCLUDES A TRANSCEIVER (14) HAVING A POWER SAVING FUNCTION FOR SUSPENDING A TRANSMITTING UNIT (141) WHILE SUPPLYING ELECTRIC POWER TO A RECEIVING UNIT (142) AND A CONTROL APPARATUS (11) THAT TRANSMITS SUPPORT INFORMATION OF THE POWER SAVING FUNCTION TO THE OLT (1) VIA THE TRANSCEIVER (14), AND THE OLT (1) INCLUDES A CONTROL APPARATUS (2) THAT GENERATES TRANSMISSION ALLOWANCE INFORMATION OF UPSTREAM COMMUNICATION BASED ON THE SUPPORT INFORMATION OF THE POWER SAVING FUNCTION AND A TRANSCEIVER (5) THAT RECEIVES THE SUPPORT INFORMATION OF THE POWER SAVING FUNCTION AND TRANSMITS THE TRANSMISSION ALLOWANCE INFORMATION TO THE ONU (10-1 TO 10-N).