Smart Bandwidth Reduction and Redistribution Allocation Algorithm to Enhance Performance of Overloaded ONUs in WDM NG-EPON

In today's modern world, data demands increase continuously with technological advancements. It is very important to manage the limited resource (bandwidth) in an efficient way in a passive optical network (PON). As next generation Ethernet passive optical networks (NG-EPONs) have the merit of cost-effectiveness, enhanced security, and energy efficiency it is a leading choice for global connectivity. In this paper, we propose an algorithm namely smart bandwidth reduction and redistribution allocation (SBRRA) algorithm for allocating bandwidth efficiently especially for overloaded ONUs while maintaining a high level of quality of service (QoS) of a network. We have analyzed the performances of the proposed SBRRA algorithm with existing bandwidth allocation algorithms like premier dynamic bandwidth allocation (PDBA) and fixed bandwidth allocation (FBA). We have compared the network performance of our system with existing systems on the basis of average packet delay, throughput, and allocated bandwidth under different traffic load scenarios. Simulation results indicate that the proposed SBRRA algorithm achieved 2.33ms delay by allocating 15.84Gbps bandwidth at 100 percent offered load and performs better than the existing systems and can meet the future demands of the network subscribers efficiently in NG-EPON.