Lifetime Enhancement Using Fault Node Recovery Algorithm For Wireless ad-hoc Network

Wireless ad-hoc network contains many wireless nodes. Each node may have a low battery power. When energy of any node is exhausted, the failed nodes cannot relay the data to other nodes during transmission processing. It will cause wireless network leaks. Thus, the other nodes will be burdened with increased transmission processing. It is important to optimization research of replacement of nodes, node replacement cost reduction and reusing the routing paths when some of the nodes becomes nonfunctional. Fault node recovery (FNR) algorithm is used for enhancement of wireless network lifetime when some nodes are shut down. This algorithm is a combination of grade diffusion algorithm and genetic algorithm. It increases the number of active nodes and reduces the rate of data loss. We propose a three tier power management schemes in wireless networks to reduce power consumption. To do the same we introduce active, sleep semi-sleep methods. In active mode each node will use its full power and in semisleep it uses half of its energy and it will be in off for sleep mode. So combining these three methods the entire system will reduce the total network power consumption. KeywordsFault node recovery, directed diffusion , grade diffusion, active node, genetic algorithm, power management.