Patent ID: 9167323
Filing Date: 2015-10-20
Classification: H04J,H04Q

Abstract:
1. A method for updating ranging results of Optical Network Units (ONUs) by an Optical Line Terminal (OLT), comprising: distributing an acquired ranging difference to all the ONUs by the OLT; and implementing updating of ranging result of a current ONU itself by the current ONU according to the acquired ranging difference; wherein the ranging difference comprises a round trip delay ranging difference RTD under the condition that the ONU is in a ranging state after protection switching is triggered, distributing the RTD wherein when the primary channel is switched to the standby channel, the process of implementing updating of the ranging result of the current ONU itself according to the RTD when the standby channel is switched to the primary channel, the process of implementing updating of the ranging result of the current ONU itself according to the RTD