西安邮电学院通信工程系,西安,710061
网络首发:2009-10-10,
纸质出版:2009
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赵季红 1, 曲桦 2, 3, 等. Ad Hoc网络中基于链路故障的路由修复机制[J]. 西安交通大学学报, 2009,43(10):47-51.
A New Route Repair Mechanism Based on Failures for Ad Hoc Networks[J]. 2009, 43(10): 47-51.
针对已有的Ad Hoc网络中路由修复算法未考虑节点状态的不确定性、以单一节点作为路由查找目的地、恢复效率低等局限性
提出了一种基于链路故障的路由修复机制.该机制不是简单地认为移动节点自始至终都处于工作状态
而是每个修复节点将下游节点的状态变化所导致的路由失效作为选择路由修复策略的依据.根据状态变化分析了链路断开的原因
包括节点间相对移动、节点故障和节点关闭
从而选择不同的节点作为RREQ消息的目的节点.修复节点采用多目的地址的RREQ消息进行广播.通过数学分析和仿真表明
在不同的节点故障情况下
所提机制的平均路由建立时间可降低13%左右
平均控制开销可减小18%
这显示出机制具有更好的适应实际网络的能力.
Focusing on the limitations of the existing route repair algorithm for ad hoc networks
such as without considering the nondeterminacy of the node state
setting a single node as the routing destination
and low repair efficiency
a new route repair mechanism is presented based on link failures. The mechanism doesn't always regard the moving node at working state. The status changes of downstream nodes from the repairing node are used as the basis of choosing route repair schemes. The causes of link breaks such as mobility between nodes
node failures and node power-off are analyzed according to the change of node status
and different nodes are selected as destinations for RREQ. RREQ with multiple destinations is broadcasted by the repairing node. Mathematical analysis and simulations are carried out to evaluate the network performance. Results under different node failure circumstances show that the average route setup time of the proposed mechanism is reduced by 13%
the control overhead ratio is decreased by 18%
and that the proposed mechanism is well applicable to real networks.
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延长实时无线传感器网络生命周期的能量平衡路由.西安交通大学学报,2007,41(10):1137-1141.
基于随机密钥预分布模型的安全定向扩散协议.西安交通大学学报,2007,41(12):1423-1426.
无线传感器网络低时延能量均衡安全路由.西安交通大学学报,2008,42(2):161-165.
多输入多输出的异构无线传感器网络时分多址调度算法.西安交通大学学报,2008,42(11):1402-1407.
双心音媒体接入协议中的隐藏节点问题及其改进.西安交通大学学报,2008,42(12):1459-1463.
面向信誉的自组网节点合作方法.西安交通大学学报,2009,43(8):17-21.
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