Network-aware service composition in mobile environment

In the mobile environment, users will use mobile devices to enjoy different services, such as surfing the Internet, shopping online, or paying bills. And the network latency will greatly affect the performance of services, which influences the users using experience at the same time. Many service selection methods have treated network latency as QoS, but they do not consider the issue of user's mobility that resulting inconstantly changing of latency when existing information transmission between the user and services in mobile environment. So it is meaningful to take it into consideration to select globally optimal service to solve the practical problem. In this paper, we consider the user's movement, estimate the network latency by Euclidean distance, and propose a service composition algorithm in mobile environment to provide the best service scheme with the basic idea of dynamic programming. Finally, we make experiments by changing different factors and obtain lower latency compared with the traditional method; reflecting service composition algorithm in mobile environment can better adapt to the user's mobility and uncertain times of interaction between the user and services. Copyright (C) 2016 John Wiley & Sons, Ltd.