CAJ | 학술논문

在无线传感器网络（ WSNs）中提出的许多路由算法因其真实应用场景下存在大量单向链路而使其性能大幅降低，甚至无法正常工作。对此如何在WSNs中实现准确、高效能单向链路故障检测成为一个重要的研究课题。针对这种情况提出了一种基于Hello报文的单向链路故障检测（ ALFD-H）算法，该算法充分利用WSNs组成的苯环网络模型，由苯环中心节点发起周期检测信号来完成单向链路故障检测。通过苯环中心节点处理故障单向链路来控制报文数量降低网络资源的消耗，并且提高了网络的连通性和可扩展性。通过NS2仿真实验结果表明：ALFD-H相较传统检测算法采用了苯环网络模型，减少了用于故障检测的能量消耗，从而大大延长了节点的工作时间和网络的生命周期。
재무선전감기망락（ WSNs）중제출적허다로유산법인기진실응용장경하존재대량단향련로이사기성능대폭강저，심지무법정상공작。대차여하재WSNs중실현준학、고효능단향련로고장검측성위일개중요적연구과제。침대저충정황제출료일충기우Hello보문적단향련로고장검측（ ALFD-H）산법，해산법충분이용WSNs조성적분배망락모형，유분배중심절점발기주기검측신호래완성단향련로고장검측。통과분배중심절점처리고장단향련로래공제보문수량강저망락자원적소모，병차제고료망락적련통성화가확전성。통과NS2방진실험결과표명：ALFD-H상교전통검측산법채용료분배망락모형，감소료용우고장검측적능량소모，종이대대연장료절점적공작시간화망락적생명주기。
As there is a lot of unidirectional link in real scenarios,many routing algorithm which is proposed in wireless sensor networks( WSNs)has low performance or even can not work. How to achieve accurate and efficient communication in WSNs with unidirectional link failure becomes an important research topic. With this purpose, propose an effective fault detection algorithm asymmetric link failure detection based on Hello( ALFD-H ). This algorithm takes advantage of a benzene ring network model composed of a mobile node,the central node initiates by the benzene ring to complete the cycle detection signal to detect link failures. This algorithm controls the number of packets and reduces the consumption of network resources by benzene central node processing the faulty link result in improving the connectivity and scalability of the network. By NS2 simulation,results show that the lifetime of the network to be longer with ALFD-H algorithm to detect the benzene ring structure compared to traditional fault detection algorithm,reduces energy consumption for the fault detection,thereby greatly extending the working hours of the nodes and the network life cycle.