Traffic-prediction-assisted dynamic bandwidth assignment for hybrid optical wireless networks
Computer Networks: The International Journal of Computer and Telecommunications Networking
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Ethernet Passive Optical Network (EPON) and Worldwide Interoperability for Microwave Access (WiMAX) are two promising broadband access technologies for next-generation wired and wireless access network. The integrated architecture of complementary EPON and WiMAX technologies combine the benefits of optical fiber capacity and wireless network mobility. In this paper, we propose a dynamic bandwidth allocation (DBA) and scheduling scheme for the integrated architecture in the access network to support quality of service (QoS). Combining the medium access control (MAC) of both IEEE 802.3ah and IEEE 802.16, the proposed QoS-based Dynamic Bandwidth Allocation (QDBA) for EPON can offer efficient operation and minimize the packet delay. Furthermore, the proposed queue-based scheduling scheme for base station can provide call admission control to serve classified traffic. The simulation results demonstrate that the proposed scheme enhances performance in terms of drop probability, average queue length and average end-to-end packet delay, respectively.