FAULT OPTICAL NETWORK UNIT DETECTION METHOD USING DATA TRANSMISSION ERROR DETECTION IN A GPON FOR USING PHY IN GPON OLT WHICH SUPPORTS AN NSR ONU AND A TRAFFIC MONITORING FUNCTION IN A MAC LAYER

摘要

PURPOSE: A fault optical network unit detection method using data transmission error detection in a GPON(Gigabit-capable Passive Optical Network) is provided to detect a fault ONU(Optical Network Unit) using detection of a generated data transmission error when light of the ONU connected to an OLT(Optical Line Terminal) is transmitted in the GPON.;CONSTITUTION: A MAC(Medium Access Control) layer monitors traffic by using a GEM(GPON Encapsulation Method) header of a GTC(GPON Transmission Convergence) frame. The MAC layer finds an ONT(Optical Network Terminal) which data is not delivered. The MAC layer assigns an upstream bandwidth of the ONT with other method which is not round-robin. The MAC layer detects a fault ONT.;COPYRIGHT KIPO 2013;[Reference numerals] (AA) Communication error; (BB) Example of normal operation