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计算机工程 ›› 2014, Vol. 40 ›› Issue (12): 1-5. doi: 10.3969/j.issn.1000-3428.2014.12.001

所属专题: 云计算专题

• 云计算专题 • 上一篇    下一篇

基于OpenFlow的流媒体云服务迁移方法

战立松,奚宏生,王子磊   

  1. 中国科学技术大学自动化系网络传播系统与控制联合实验室,合肥 230027
  • 收稿日期:2014-04-11 修回日期:2014-05-06 出版日期:2014-12-15 发布日期:2015-01-16
  • 作者简介:战立松(1987-),男,硕士研究生,主研方向:云计算,未来网络;奚宏生,教授;王子磊,副教授。
  • 基金资助:

    国家自然科学基金资助项目“三网融合业务接入系统的分析、建模与调控”(61233003)。

OpenFlow-based Service Migration Method for Streaming Media Cloud

ZHAN Lisong,XI Hongsheng,WANG Zilei   

  1. Joint Laboratory of Network Communication System and Control,Department of Automation, University of Science and Technology of China,Hefei 230027,China
  • Received:2014-04-11 Revised:2014-05-06 Online:2014-12-15 Published:2015-01-16

摘要:

传统基于应用层中间件或代理的服务迁移技术容易造成单点故障且扩展性差,并且流媒体的交互性和长会话特性使其难以实现对用户透明。为此,提出一种基于OpenFlow的流媒体云服务迁移方法。通过在网络层进行流媒体云迁移实现对用户的服务透明,同时针对网络层的服务迁移代价问题,提出一种基于用户请求预测的迁移策略,在提升系统容量的同时优化服务迁移数。实验结果表明,该迁移策略可有效地提高服务请求接受率,进而增强系统服务能力。

关键词: 流媒体, 云计算, OpenFlow技术, 软件定义网络, 服务迁移, 请求预测

Abstract:

Traditional migration techniques based on a middleware or a proxy at the application layer are likely to cause a single point of failure and have poor scalability,and it is difficult for them to be transparent to users because of the features of streaming media interaction and long session.Aiming at the problems,this paper proposes an OpenFlow-based service migration method for streaming media cloud.The method implements service migration at the network layer which is transparent to users.In the meantime,in view of the cost of service migration at the network layer,this paper proposes a request prediction-based migration strategy which can improve the system capacity while optimize the quantities of service migration.Experimental results show that the strategy can effectively increase the acceptance rate of requests,thus improve the service capability of the system.

Key words: streaming media, cloud computing, OpenFlow technology, Software Defined Network(SDN), service migration, request prediction

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