A Service Selection Approach Based on Availability-Aware in Mobile Ad Hoc Networks  

移动自组织网络下一种基于可用性感知的服务选择方法(英文)

作　　者：孙其博 王文彬 邹华 杨放春 

机构地区：[1]State Key Laboratory of Networking and Switching Technology,Beijing University of Posts and Telecommunications

出　　处：《China Communications》2011年第1期87-94,共8页中国通信（英文版）

基　　金：supported in part by the National Key Basic Research Program of China(Grant Nos.2009CB320406and2009CB320504);Foundation for Innovative Research Groups of the National Natural Science Foundation of China(Grant No.60821001);National Natural Science Foundation of China(Grant No.61070206)

摘　　要：Service composition is considered to be an effective way for resource sharing and node collaboration in Mobile Ad hoc NETworks (MANETs) environment.In order to improve the reliability and shorten the response time of composite services,this paper first analyzes the node environments and network environments that affect the component services' availability,and then proposes an Environment-aware Quantitative Evaluation Model for Service Availability (EQEM-SA).In addition,based on EQEM-SA,a service field concept is proposed as well as the availability attenuation equation,where the availability value is considered as the field strength.Then the service selection approach based on service field model is presented.The effectiveness of the proposed approach is illustrated and compared with related references,and the results of experimental evaluations indicate that our approach significantly reduces the failure rate and shortens the service delay.Service composition is considered to be an effective way for resource sharing and node collaboration in Mobile Ad hoc NETworks （MANETs） environment. In order to improve the reliability and shorten the response time of composite services, this paper first analyzes the node environments and network environments that affect the component services＇ availability, and then proposes an Envi- ronment-aware Quantitative Evaluation Model for Service Availability （EQEM-SA）. In addition, based on EQEM-SA, a service field concept is proposed as well as the availability attenuation equation, where the availability value is considered as the field strength. Then the service selection approach based on service field model is presented. The effective- ness of the proposed approach is illustrated and compared with related references, and the results of experimental evaluations indicate that our approach significantly reduces the failure rate and shortens the service delay.

关 键 词：MANETS AVAILABILITY service field service selection 

分 类 号：TN929.5[电子电信—通信与信息系统]