Some methods of RSSI filtering in wireless sensor networks

Wireless sensor network is an emerging technology,which has a wide range of applications,but the wireless sensor networks based on the received signal strength indicator(RSSI)application need to filter the multi-RSSI values of the same node received by network. In order to have a comprehensive understanding of RSSI filtering,several filtering ways are introduced. The principles and characteristics of each filtering method are summarized in detail. Finally,it is pointed out that the fil tering effect,algorithm complexity,node energy consumption and other factors should be weighed to select a filtering method or a hybrid filtering method mixed with more algorithms.