| 具有QoS保证的流媒体业务服务组合算法* |
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| 引用本文： | 嵇智辉,倪宏,匡振国.具有QoS保证的流媒体业务服务组合算法*[J].计算机应用研究,2009,26(10):3867-3870. |
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| 作者姓名： | 嵇智辉 倪宏 匡振国 |
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| 作者单位： | 1. 中国科学院,研究生院,北京,100039;中国科学院,声学研究所,国家网络新媒体工程技术研究中心,北京,100190
2. 中国科学院,声学研究所,国家网络新媒体工程技术研究中心,北京,100190 |
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| 基金项目： | 国家“863”计划资助项目(2008AA01A317) |
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| 摘 要： | 针对采用服务组合方式实现流媒体业务提供过程中的服务路径选择问题，从物理资源和逻辑资源两个角度出发，选择时延、带宽、丢包率和服务实例可用服务能力作为参数，建立了多约束归一化线性模型；同时，根据模型特点，采用线性整数规划迭代求解，提高了处理效率。仿真实验证明，该模型和算法能够有效地保障业务服务质量，并具备良好的负载均衡效果。
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| 关 键 词： | 流媒体 服务路径 归一化线性模型 服务质量 负载均衡 |
QoS-based stream media service composition algorithm |
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| JI Zhi-hui,NI Hong,KUANG Zhen-guo.QoS-based stream media service composition algorithm[J].Application Research of Computers,2009,26(10):3867-3870. |
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| Authors: | JI Zhi-hui NI Hong KUANG Zhen-guo |
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| Affiliation: | (1.School of Graduate, Chinese Academy of Sciences, Beijing 100039, China; 2.National Network New Media Engineering Research Center, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China) |
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| Abstract: | Focus on the scenario that service composition took place to provide stream media service, presented a novel ser-vice routing algorithm. It took delay, bandwidth, package loss rate and service access ability as its metrics, and transfered multiple constraints to linear constraints, and then be resolved using linear programming. The simulation results show that it not only solves the problem of quality of service, but also keeps the load balancing among service instances. |
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| Keywords: | stream media service routing normalize linear model quality of service load balancing |
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