| 公平高效支持QoS的EPON动态带宽分配算法设计原则研究 |
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| 引用本文： | 甘苹.公平高效支持QoS的EPON动态带宽分配算法设计原则研究[J].重庆三峡学院学报,2009,25(3):36-41. |
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| 作者姓名： | 甘苹 |
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| 作者单位： | 复旦大学通信科学与工程系,上海,200433;上海应用技术学院计算机科学与信息工程系,上海,200235 |
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| 摘 要： | 以太无源光网的DBA算法应当高效、公平，并保证服务质量。分析了影响链路利用率的各种因素，提出避免DBA延时、消除时隙末损耗等4项提高链路利用率的原则。同时给出了针对性措施，比如分组交织，基于帧边界授权。遵循这些原则，链路效率能够超过96％。按照SLA带宽比例，面向用户授权带宽能够实现用户间公平。为保证服务质量，应当采取区分服务模型，实行闸门式优先级队列调度方式，选取适当长度的轮询周期。
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| 关 键 词： | 以太无源光网 动态带宽分配 服务等级协约 服务质量 公平性 |
Designing Principles of Fair Dynamic Bandwidth Allocation Scheme for QoS over Ethernet PONs |
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| GAN Ping.Designing Principles of Fair Dynamic Bandwidth Allocation Scheme for QoS over Ethernet PONs[J].JOurnal of Chongqing Three Gorges University,2009,25(3):36-41. |
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| Authors: | GAN Ping |
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| Institution: | 1.Department of Communication Science and Engineering;Fudan University;Shanghai 200433;China;2.Department of Computer Science and Information Engineering;Shanghai Institute of Technology;Shanghai 200235;China |
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| Abstract: | In Ethernet passive optical networks,a good dynamic bandwidth allocation(DBA) scheme is expected to support quality-of-service and be efficient and fair.All factors concerning link utilization are studied,thus four principles are proposed to boost link utilization.Practical methods complying with these principles are also presented,such as interleaved transmission,granting based on threshold-reporting.DBA realizing these principles can achieve optimal link utilization higher than 96%.It is suggested that DB... |
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| Keywords: | Ethernet passive optical networks dynamic bandwidth allocation quality-of-service service level agreement: fairness |
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