中文摘要：

与有线的固定环境相比,移动环境中的无线网络连接更加脆弱,移动主机可靠性更差,为提高移动计算系统的容错性能,研究并提出一个移动计算环境下支持移动节点迁移的故障检测算法。在基于互测比较和概率诊断的区内故障感知算法基础上,针对移动节点自由迁移导致的区内故障感知算法中移动主机（MH）漏检或故障恢复不彻底问题,引入条件检查和故障信息发布机制,提出支持移动节点迁移的移动计算环境下的故障检测算法。仿真实验表明：算法满足故障检测要求,能够适应动态的移动计算网络环境。

英文摘要：

Compared with the fixed environment of cable network,wireless network in mobile environment is much poor in connection and mobile hosts＇ reliability.In order to improve the fault-tolerance performance of the mobile computing system,a fault detection algorithm supporting the mobile node handoff in mobile computing environment is proposed.An in-the-cell fault-aware algorithm using mutual-test-comparison and probability diagnosis is introduced,in which there is the problem of the undetected rate of mobile host or incompletely recovery of faults caused by the randomly handoff of the mobile node.Aiming at this problem,by using the condition check scheme and fault information release method,a fault detection algorithm in mobile computing environment supporting the mobile node handoff is proposed.Simulation experiments show that the algorithm can meet the requirement of fault detection,and is suitable for the dynamic mobile computing network environment.