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篇目详细内容 |
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【篇名】 |
QoS-aware dynamic bandwidth allocation algorithm for Gigabit-capable PONS |
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【刊名】 |
Frontiers of Electrical and Electronic Engineering in China |
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【刊名缩写】 |
Front. Electr. Electron. Eng. China |
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【ISSN】 |
1673-3460 |
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【EISSN】 |
1673-3584 |
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【DOI】 |
10.1007/s11460-007-0047-2 |
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【出版社】 |
Higher Education Press and Springer-Verlag |
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【出版年】 |
2007 |
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【卷期】 |
2
卷3期 |
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【页码】 |
255-259
页,共
5
页 |
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【作者】 |
WANG Xin;
ZHAO Yang;
GU Wanyi;
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【关键词】 |
access network; dynamic bandwidth allocation; GPON; quality-of-service (QoS); fair allocation; simulation and modeling |
【摘要】 |
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The Gigabit-capable passive optical network (GPON) technology is being considered as a promising solution for the next-generation broadband access network. Since the network topology of the GPON is point-to-multipoint, a media access control called dynamic bandwidth allocation (DBA) algorithm is an important factor for determining the performance of the GPON. In this paper, we propose a new DBA algorithm to effectively and fairly allocate bandwidths among end users. This DBA algorithm supports differentiated services—a crucial requirement for a converged broadband access network with heterogeneous traffic. In this article we first reviewed the signaling and configuration of the DBA, and then proposed a new DBA scheme that implemented QoS-based priority for this need to maximally satisfy the requirements of all optical network units (ONUs) and provide differentiated services. Analyses and simulation results show that the new algorithm can improve the bandwidth utilization and realize the fairness for both different ONUs and services. |
