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This paper designs multiple channel scheduling algorithms for WDM PONs and OFDMA PONs to allocate upstream bandwidth resource to competing users. Simulation results demonstrate that the proposed algorithms obtain higher channel utilization.
We investigate optical network unit (ONU) grant scheduling techniques for multichannel Ethernet passive optical networks (EPONs), such as wavelength division multiplexed (WDM) EPONs. We take a scheduling theoretic approach to solving the grant scheduling problem. We introduce a two-layer structure of the scheduling problem and investigate techniques to be used at both layers. We present an extensive...
We proposed PON architecture for local area network and dynamic bandwidth allocation algorithm (DBA) for LAN traffic. We present the system implementation (called LAN-PON) as well as the performance of the proposed transmission scheme to illustrate its feasibility and benefits. From the simulation result, we have confirmed that our proposed system applying DBA algorithm can improve throughput and...
This study proposes a prediction-based fair wavelength and bandwidth allocation (PFWBA) scheme to enhance the differentiated services for WDM-EPON. The proposed PFWBA scheme is based on the dynamic wavelength allocation (DWA) and prediction-based fair excessive bandwidth allocation (PFEBA) which is our previous work. The DWA can operate in coordination with an unstable degree list of PFEBA to allocate...
Ethernet passive optical networks (EPON) are a cost-effective solution for the bottle-neck problem in the access network. An open issue for this technology is the bandwidth allocation over the upstream channel in order to provide differentiated services, fairness and efficiency. Several algorithms for dynamic bandwidth allocation in EPON have been proposed, but very few of them address the possibilities...
We work to solve the problem of efficient wavelength utilization in WDM EPON. This problem is highlighted because it plays an important role for the up-gradation of WDM EPON implemented in the access. In WDM EPON we have multiple channels available. Channel utilization is dependent on the supportability of the channel by ONUs. Each ONU want to transmit its data to OLT as soon as it is queued at the...
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