Geographic routing based on link quality in wireless sensor network
Dai Kao-zhu, Qianping Wang · Jisuanji gongcheng yu sheji · 2011
The traditional greedy geographic routing is usually select neighbor node which distance to the destination node is closer than itself as the next hop node.This routing algorithm to find the minimum hop may choose the link that is poor quality of data transmission,resulting in the low rate of packet delivery,and poor reliability of data transmission.To solve this problem,a geographic routing protocols based on EWMA link quality estimation algorthm is presented by summing up the existing geographic routing algorthm.In the algorithm,node evaluate link quality with neighbor nodes use periodic broadcast package,and exchange geographic information.For-warding node selects the neighbor node which to destination node closer and the link quality better as the next hop node,effectively reduce data packet loss and improve the reliability of data transmission.