| 一种细粒度的区分服务及QoS映射优化研究 |
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| 引用本文： | 朱海萍,李增智,陈妍.一种细粒度的区分服务及QoS映射优化研究[J].小型微型计算机系统,2007,28(12):2125-2128. |
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| 作者姓名： | 朱海萍 李增智 陈妍 |
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| 作者单位： | 西安交通大学,计算机系统结构与网络研究所,陕西,西安,710049 |
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| 基金项目： | 国家自然科学基金;西安交通大学校科研和教改项目 |
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| 摘 要： | 针对传统区分服务模型服务等级分类有限,结合策略管理的优势,提出了基于策略的细粒度区分服务概念,给出了不同类型区分服务的通用描述形式,提出了基于遗传算法的细粒度服务优化算法.当系统资源不足以满足多媒体流的传输要求或者用户需要细粒度的区分服务质量时,通过启用遗传算法对PHB进行组合优化,能够在较少的代数内求得满足用户QoS要求的最优解,实验表明该算法可行.
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| 关 键 词： | 策略管理 细粒度 区分服务 QoS映射 |
| 文章编号： | 1000-1220（2007）12-2125-04 |
| 收稿时间： | 2006-08-29 |
| 修稿时间： | 2006年8月29日 |
Optimized QoS Mapping Mechanism Based on Fine Granularity Diffserv |
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| ZHU Hai-ping,LI Zeng-zhi,CHEN Yan.Optimized QoS Mapping Mechanism Based on Fine Granularity Diffserv[J].Mini-micro Systems,2007,28(12):2125-2128. |
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| Authors: | ZHU Hai-ping LI Zeng-zhi CHEN Yan |
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| Abstract: | Present DiffServ can only provide rough granularity QoS guaranteed for clients since limited PHB classification.In this paper,a policy based fine granularity DiffServ mechanism as well as Universal Expression of Differentiated Service is proposed.The core idea of fine granularity differentiated service is that we can obtain different Per Domain Behavior(PDB) by composing multiple Per Hop Behaviors(PHB) in the path they passed.Then a GAs based Optimized PHB composition algorithm is designed.The algorithm is suitable for the cases such that system resources can not meet the requirements of multimedia stream transmission or the user need fine granularity QoS.The results show that the near global optimal solution can be easily and quickly obtained by this method. |
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| Keywords: | policy based management fine granularity Diffserv QoS mapping |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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