An effective method for extending wireless sensor network lifetime is presented for redundancy nodes.Because most of the existing coverage protocols are based on the circular sensing model,this paper discusses how to ...An effective method for extending wireless sensor network lifetime is presented for redundancy nodes.Because most of the existing coverage protocols are based on the circular sensing model,this paper discusses how to combine consideration of coverage and connectivity main-tenance in a single effective scheduling when the sensing model is not circular.The least redundancy coverage strat-egy(LRCS)strategy takes the smallest redundant coverage as the criterion whose goal is to maximize the lifetime of the sensor network.The sensor nodes are divided into five statuses:the judgment status,the waiting status,the activity status,the dormancy status and the exhausted status.Simu-lations show that LRCS outperforms the coverage configu-ration protocol and is suitable for various situations.It ef-fectively reduces the number of active nodes and extends the lifetime of the sensor network.展开更多
基金supported by the National Natural Science Foundation of China(No.60241004)the National Basic Research Program of China(No.2003CB314801)the State Key Laboratory of Networking and Switching Technology.
文摘An effective method for extending wireless sensor network lifetime is presented for redundancy nodes.Because most of the existing coverage protocols are based on the circular sensing model,this paper discusses how to combine consideration of coverage and connectivity main-tenance in a single effective scheduling when the sensing model is not circular.The least redundancy coverage strat-egy(LRCS)strategy takes the smallest redundant coverage as the criterion whose goal is to maximize the lifetime of the sensor network.The sensor nodes are divided into five statuses:the judgment status,the waiting status,the activity status,the dormancy status and the exhausted status.Simu-lations show that LRCS outperforms the coverage configu-ration protocol and is suitable for various situations.It ef-fectively reduces the number of active nodes and extends the lifetime of the sensor network.
