Detecting rogue ONU, OLT and PON system

摘要

A method and apparatus of detecting a rogue optical network unit (ONU) is provided. An optical line terminal (OLT) detects an abnormal upstream transmission to determine a plurality of rogue ONU candidates, and transmits a sleep allow message instructing a transition to a sleep mode to each of the plurality of rogue ONU candidates. The OLT detects the rogue ONU among the plurality of rogue ONU candidates based on upstream transmissions from the plurality of rogue ONU candidates in the sleep mode. Since the detection of the rogue ONU is performed in the sleep mode, the remaining ONUs can transition from the sleep mode to the normal mode after the detection of the rogue ONU is completed, thereby making it possible to rapidly resume upstream communication.

主权项

1. A method of detecting a rogue optical network unit (ONU) in a passive optical network (PON), comprising:
configuring parameters for a sleep mode with a plurality of rogue ONU candidates based on an ONT management and control interface (OMCI); detecting an abnormal upstream transmission to determine the plurality of rogue ONU candidates; transmitting a sleep allow message instructing a transition to the sleep mode to each of the plurality of rogue ONU candidates; and detecting the rogue ONU among the plurality of rogue ONU candidates based on upstream transmissions from the plurality of rogue ONU candidates in the sleep mode, wherein the sleep mode includes a dozing mode in which a transmitter of each rogue ONU candidate is turned-on or turned-off and a cyclic sleep mode in which a transmitter and a receiver of each rogue ONU candidate are turned-on or turned-off.