Adaptive service configuration approach for quality of service management in ubiquitous computing environments

作者：Zhang, Yong^*; Zhang, Shen sheng; Han, Song qiao

来源：Journal of Zhejiang University-Science A(Applied Physics & Engineering), 2009, 10(7): 964-975.

DOI：10.1631/jzus.A0820422

• Service configuration
• Ubiquitous computing (UbiComp)
• Quality of service (QoS)
• Fuzzy logic control

Mobility and resource-limitedness pose challenging issues to service configuration for quality of service (QoS) management in ubiquitous computing environments. Previous configuration approaches, such as static resource reservation, dynamic resource allocation and single service composition are not valid in the environments. In this study, we present an adaptive service configuration approach. Firstly, we reduce the dynamic configuration process to a control model which aims to achieve the variation of critical QoS on minimal level with less resource cost. Secondly, to deal with different QoS variations, we design two configuration strategies-service chain reconfiguration and QoS parameter adjustment-and implement them based on fuzzy logic control theory. Finally, a configuration algorithm is developed to flexibly employ the two configuration strategies in tune with the error of critical QoS in configuration process. The results of simulation experiments suggest that our approach outperforms existing configuration approaches in both QoS improvement and resource utilization.

• 出版日期2009-7
• 单位上海交通大学