PROJECT TITLE :

Decentralized SIEPON-based ONU-initiated Tx/TRx energy-efficiency mechanism in EPON

ABSTRACT:

An Ethernet passive optical network (EPON) has the smallest amount energy consumption among access network technologies and is the simplest candidate for improving energy consumption by time utilization. Current studies have proposed OLT-initiated schemes to flip off the transmitter/ receiver of an optical network unit (ONU) for a considerable time so as to achieve energy savings. During this paper, a replacement SIEPON-based ONU-initiated energy-saving mechanism is proposed in which the ONU calculates the transmitter (Tx) sleep duration based mostly on the present queue state and most boundary delay necessities and forwards it to the OLT; then, the OLT calculates the ONU???s receiver (Rx) sleep length and decides the ONU's sleeping mode in Tx or TRx sleep mode. Furthermore, the Sleep manager and Green DBA and TRx controller elements are proposed in the OLT and ONU architectures to additional exactly manage the energy-saving mechanism. Simulation results show that the proposed energy-saving mechanism considerably improves energy savings up to 47% and forty two% within the up- and downstream directions, respectively, and guarantees the QoS requirement in terms of mean packet delay, packet loss, throughput, and jitter. Moreover, the proposed energysaving mechanism has higher delay performance compared with the OLT-initiated energy-saving mechanism like upstream centric scheduling.