Analyzing Comprehensive QoS with Security Constraints for Services Composition Applications in Wireless Sensor Networks

Sensors

Naixue Xiong¹  Zhao Wu¹  Yannong Huang¹ 

[1] School of Mathematics and Computer Science, Hubei University of Arts and Science, Xiangyang 441053, China; E-Mails:

关键词: wireless sensor networks;    quality of service;    security constraint;    services composition;    universal generating function;   

DOI  :  10.3390/s141222706

来源: mdpi

【 摘 要 】

Services composition is fundamental to software development in multi-service wireless sensor networks (WSNs). The quality of service (QoS) of services composition applications (SCAs) are confronted with severe challenges due to the open, dynamic, and complex natures of WSNs. Most previous research separated various QoS indices into different fields and studied them individually due to the computational complexity. This approach ignores the mutual influence between these QoS indices, and leads to a non-comprehensive and inaccurate analysis result. The universal generating function (UGF) shows the speediness and precision in QoS analysis. However, only one QoS index at a time can be analyzed by the classic UGF. In order to efficiently analyze the comprehensive QoS of SCAs, this paper proposes an improved UGF technique—vector universal generating function (VUGF)—which considers the relationship between multiple QoS indices, including security, and can simultaneously analyze multiple QoS indices. The numerical examples demonstrate that it can be used for the evaluation of the comprehensive QoS of SCAs subjected to the security constraint in WSNs. Therefore, it can be effectively applied to the optimal design of multi-service WSNs.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.