This dissertation presents a flexible recovery mechanism for node failures ( Multi-loss Flexible Recovery, MFR), which allows different nodes to be repaired can be connected to different numbers of survival nodes to complete the repair. 本文提出了一种基于弹性的节点修复机制(Multi-lossFlexibleRecovery,MFR),使得每个待修复节点可以连接不同数目的存活节点来完成修复。
The exploring model and corresponding state functions from the local node to the next hop will be established by the optimal exploration theory, so as to convert the optimal exploration problem into the local repair one. 基于最优搜索理论建立了链路失效时本地节点对下一跳节点的搜索模型并构造相应的状态方程,从而将最优搜索的数学问题转化为链路失效时本地节点对当前链路的修复问题。
On one hand, existing methods repair network organization errors caused by node or communication failures at the cost of high energy consumption. To address this issue, E-NORS, an energy-efficient network organization repair scheme based on adaptive working cycle, was proposed. 一方面,针对现有无线传感器网络在修复因节点变动、通信故障等原因导致的网络组织错误时功耗较高的缺点,提出了工作周期自适应的低功耗网络组织修复方法:E-NORS。
In the improved protocol, the node sends repair packets to the pre-nodes, making it switch to their backup routes to continue transmitting data, so it can reduce the overhead by avoiding flooding routing control packets. 该协议通过向上游节点发送修复包,使其切换到备份路由绕开局部中断的链路来继续传输数据,避免了泛洪路由控制包,从而降低路由开销。
However, low availability of storage nodes lead to the frequent node repair to guarantee the reliability of data. 然而,由于分布式存储系统中各个存储节点的可用性不高,为保证数据可靠性,系统会频繁的进行节点修复。