Optimal Service Distribution in WSN Service System Subject to Data Security Constraints

Sensors

Zhao Wu¹  Naixue Xiong²  Yannong Huang¹ 

[1] School of Mathematics and Computer Science, Hubei University of Arts and Science, Xiangyang 441053, China; E-Mails:;School of Computer Science, Colorado Technical University, Colorado Springs, CO 80907, USA

关键词: wireless sensor networks;    data security;    services composition;    reliability optimization;    task partition;    universal generating function;    genetic algorithm;   

DOI  :  10.3390/s140814180

来源: mdpi

【 摘 要 】

Services composition technology provides a flexible approach to building Wireless Sensor Network (WSN) Service Applications (WSA) in a service oriented tasking system for WSN. Maintaining the data security of WSA is one of the most important goals in sensor network research. In this paper, we consider a WSN service oriented tasking system in which the WSN Services Broker (WSB), as the resource management center, can map the service request from user into a set of atom-services (AS) and send them to some independent sensor nodes (SN) for parallel execution. The distribution of ASs among these SNs affects the data security as well as the reliability and performance of WSA because these SNs can be of different and independent specifications. By the optimal service partition into the ASs and their distribution among SNs, the WSB can provide the maximum possible service reliability and/or expected performance subject to data security constraints. This paper proposes an algorithm of optimal service partition and distribution based on the universal generating function (UGF) and the genetic algorithm (GA) approach. The experimental analysis is presented to demonstrate the feasibility of the suggested algorithm.

【 授权许可】

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