A survey of dynamic bandwidth allocation algorithms for Ethernet Passive Optical Networks |
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Authors: | Jun Zheng Hussein T Mouftah |
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Affiliation: | aSchool of Information Science and Engineering, Southeast University, Nanjing, Jiangsu 210096, China;bSchool of Information Technology and Engineering, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada |
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Abstract: | Ethernet Passive Optical Network (EPON) has been widely considered as a promising technology for implementing the FTTx solutions to the “last mile” bandwidth bottleneck problem. Bandwidth allocation is one of the critical issues in the design of EPON systems. In an EPON system, multiple optical network units (ONUs) share a common upstream channel for data transmission. To efficiently utilize the limited bandwidth of the upstream channel, an EPON system must dynamically allocate the upstream bandwidth among multiple ONUs based on the instantaneous bandwidth demands and quality of service requirements of end users. This paper introduces the fundamental concepts on EPONs, discusses the major issues related to bandwidth allocation in EPON systems, and presents a survey of the state-of-the-art dynamic bandwidth allocation (DBA) algorithms for EPONs. |
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Keywords: | Dynamic bandwidth allocation Ethernet Passive Optical Network |
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