Abstract
The next-generation Ethernet passive optical network (NG-EPON) is basically classified into two architectures on the basis of the wavelength sharing by the optical network units (ONUs). The single scheduling domain (SSD) and multi-scheduling domain (MSD) EPON are the two different design architectures for NG-EPON. A vital task in NG-EPON is to design dynamic wavelength bandwidth allocation (DWBA) algorithms that can meet the future demands of the network subscribers. A number of DWBA algorithms have been designed for time and wavelength division multiplex (TWDM) EPON. The existing DWBA algorithms for TWDM-EPON could be used in MSD-EPON by making necessary parametric changes. The design and implementation of new DWBA algorithms for MSD-EPON are still required specifically. In this paper, we have proposed a quality of service (QoS)-based DWBA algorithm for NG-EPON. We have comparatively analyzed our proposed DWBA with the existing algorithms like earlier finished time (EFT), weighted bipartite matching (WBM), and earlier finished time with void filling (EFT-VF). The results show that our proposed DWBA algorithm performs better as compared to EFT, WBM, and EFT-VF on the basis of average packet delay and average completion time for NG-EPON.
Highlights
The requirement for high-speed data services is increasing exponentially, and the current trend shows that the global IP data traffic will reach hundreds of exabytes by 2021 [1]
dynamic wavelength bandwidth allocation (DWBA) is an important functionality in next-generation Ethernet passive optical network (NG-Ethernet PON (EPON)) that closely arbitrates the upstream transmission between different optical network units (ONUs) on the multiple available bandwidth channels
We have proposed an algorithm for NG-EPON that can meet the future bandwidth demands of the users in an efficient way
Summary
The requirement for high-speed data services is increasing exponentially, and the current trend shows that the global IP data traffic will reach hundreds of exabytes by 2021 [1]. Ethernet PON (EPON) as one of the PON technologies has been reported to be a promising and leading solution for local access networks. One gigabit EPON could not meet the growth in bandwidth demands because of its limited channel capacity. The IEEE 802.3ca Task Force is working on the standardization of NG-EPON; which can meet future access network requirements and expectations [3,4]. NG-EPON is the technology that can manage to provide a huge bandwidth and/or channel capacity distribution, a broader coverage reporting area, and accelerate the data transfer speed [5]
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