中文摘要：

网络作为云服务向终端用户交付的载体,其性能对云服务质量起着至关重要的作用.基于网络微积分理论提出一种面向云服务的网络参数模型,得到云服务交付过程中端到端时延和数据积压上界的定量数学解析式.用于分析云服务类型、网络服务速率、流量分配方式以及路径数对端到端时延和数据积压上界的影响.数值实验结果表明所提出的网络参数建模分析方法在云服务交付时能够为用户提供性能保障,验证了模型和解析式的有效性.

英文摘要：

As the carrier of cloud service delivery,network performance plays a significant role in cloud service provisioning.In this paper,we develop an analytical model for cloud service provisioning based on network calculus.Then,the quantitive expressions with regard to the end-to-end delay and backlog upper bounds are obtained.Also,the impact of cloud service type,network service rate,flow distribution,and number of path on end-to-end delay and backlog upper bounds are discussed through the quantitive expressions.Finally,the numerical experiments show that the model developed in this paper can guarantee the performance to the different types of cloud service delivery,which in turn validates the correctness and effectiveness of that model.