无线传感器网络事务提交协议研究

摘要

随着无线传感器网络的发展,其应用越来越广泛。为了提供可靠的服务质量并保证数据的一致性、有效性,这就需要无线传感器网络事务处理技术的研究。文中提出了一种适用于无线传感器网络的事务原子提交协议。此协议是对传统的2PC(Two Phase Commit,两阶段提交)协议的改进,为参与者提供了缓存机制,有效利用协调者的广播信息,降低能量消耗,在协调者和参与者中加入了定时器,定时器触发后会提供事务处理统一的出口(提交或撤销)。此外,还为协调者增加了心跳算法,提高了协议的可靠性。最后使用TOSSIM( TinyOS Simulator,TinyOS仿真器)进行实验,证明了其可行性。%With the development of wireless sensor networks,it is applied more widely. In order to provide reliable quality of service and ensure data consistency and validity,require study of wireless sensor network transaction processing technology. In this paper,present an atomic transaction commit protocol is suitable for wireless sensor networks. This protocol is the improvement of traditional 2PC ( Two Phase Commit) ,to provide participants with a caching mechanism for efficient use of radio coordinator information,reducing energy con-sumption,the coordinator and the participants joined the timer will provide a unified export transaction after the timer trigger ( committed or revoked) . Furthermore,increase the heart rate algorithms for coordinator to improve the reliability of the protocol. Finally,use TOSSIM ( TinyOS Simulator) to conduct experiments to prove its feasibility.