Patent ID: 8542998
Filing Date: 2013-09-24
Classification: H04L,H04Q,Y02D

Abstract:
1. A passive optical network system comprising at least one optical line terminal and a plurality of optical network units, the optical line terminal comprising: each of the optical network units comprising: wherein: the first controller of the optical line terminal calculating a first sleep time candidate based on a capacity of an unused area of the first queue buffer and the first link speed; the second controller of each of the optical network units calculating a second sleep time candidate based on a capacity of an unused area of the second queue buffer and the second link speed; either the first controller or the second controller comparing the first sleep time candidate and the second sleep time candidate for at least one of the optical network units and determining the smaller thereof as an actual sleep time; and the at least one of the optical network units being changed to a sleep mode during the determined actual sleep time.