| 高效公平的EPON DBA算法设计原则 |
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| 引用本文： | 甘苹. 高效公平的EPON DBA算法设计原则[J]. 上海应用技术学院学报：自然科学版, 2008, 8(4) |
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| 作者姓名： | 甘苹 |
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| 作者单位： | 上海应用技术学院计算机科学与信息工程系 |
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| 摘 要： | EPON系统的动态带宽分配要求达到较高的带宽利用率,同时保证各类业务的服务质量及公平性。在分析带宽利用率的影响因素的基础上,提出三条提高带宽利用率的DBA算法设计原则:轮询周期尽可能长,消除信道闲置,避免授权时隙末的空闲。EPON中存在三种层次的公平性,保证用户间的公平性在我国具有重要的现实意义。各用户获得的带宽与他们的SLA带宽成比例应该是DBA算法设计的一个原则。采用两级结构的DBA机制,为用户的各优先级业务按SLA协议带宽比例分别授权,采用DiffServ模型,可以实现支持QoS的同时保证用户之间和优先级业务之间的公平性。
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| 关 键 词： | 以太无源光网 动态带宽分配 带宽利用率 公平性 |
Design Principles of Fair Dynamic Bandwidth Allocation Algorithm with High Efficiency |
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| GAN Ping. Design Principles of Fair Dynamic Bandwidth Allocation Algorithm with High Efficiency[J]. Journal of Shanghai Institute of Technology: Natural Science, 2008, 8(4) |
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| Authors: | GAN Ping |
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| Affiliation: | GAN Ping(Department of Computer Science , Information Engineering,Shanghai Institute of Technology,Shanghai 200235,China) |
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| Abstract: | An ideal dynamic bandwidth allocation scheme must be efficient and fair and supports QoS.On the base of studying all factors determining link utilization,three principles are proposed to boost link utilization.They are keeping the cycle length as long as possible,avoiding idle stage of the uplink during the DBA running,removing unused slot remainder.Practical measures complying with these principles are also presented,such as interleaved transmission,granting based on frame-boundary-report.Fairness in EPON ... |
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| Keywords: | SLA |
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