Discussion And Improvement Of Gear Algorithm In Wireless Sensor Network

Wireless sensor network( WSN) is a new and hot research area,which is highly interdisciplinary and can widely be used for civil and military applications, for monitoring,sensing,collecting and processing information of interested objects.,Although there are many invaluable applications for wireless sensor networks.there area lot of problems which must be handled and many challenges that must be solved.lt is a hottest and most difficult problem among research on sensor networks that how to efficiently use the nodes' stringent energy and geographic locations to correctly and quickly build a route to some destination area for data transmiting.and at the same time to achive longer network life-time by reducing nodes'enegy dissipationjn other words,research on enegy-eficient routing based on nodes'gepgraphic information, which should be applicable to wireless sensor network, is one of the most important and challenge able work for WSN.Based on the selection for next hop in packet forwarding,this thesis classified currently Popular routing protocols for wireless sensor network (WSN) into four categories which are flooding limitedly flooding routing,hierarchical routing, data-centric routing and location-based routing respevtively. And the paper also classified currently popular geographic routing schemes for WSN into three categories, according to the means used for communication hole's bypassing and nodes' state control, which are respectively limited flooding based scheme, traditional greedy forwarding based scheme,and greed forwarding with balance of enegy dissipation based scheme.In this paper, it has carried on showing to greed forwarding with balance of enegy dissipation based scheme.(GEAR algorithm),It has showed that GEAR can eficiently decrease energy consumption among a network and hence GEAR can also prolong network lifetime. But the identical node will possibly meet the identical hole once more in GEAE algorithm .Based on the analysis of the Gear algorithms, This article proposed one kind of improvement algorithm in view of this algorithm by changing the cost value of node itself, it avoid encountering the same hole agaia The result indicated after the improvement the GEAR algorithm advances the GEAR algorithm in the moderate energy consumption and in node transmission data grouping's quantity...