Route maintenance in set routing using FLT for mobile wireless sensor networks

The goal of wireless sensor networks is the maximum data gathering. Factors like energy, memory, bandwidth and processing capability affects the characteristics of the network which implies in reduced data collection. To avoid the reduction in data collection, mobile sensor nodes are used. They cover large area in short time and these networks are called as mobile wireless sensor networks (MWSN). In MWSN, set routing is used as one of the routing method for maximum data collection. In which the entire network is divided into many sets. This routing algorithm is applied for each set with the consideration that there is no node failure in the network. Here this work shows that how a new route is discovered if a node fails in a set using the Foldable Lookup Table (FLT) method. Also FLT method is compared with the routing table developed by fuzzy variables. Simulation is performed with OMNET++ simulator. Result shows the effectiveness of node failure in terms of delay and packet drops and how the route is maintained during node failure is shown with respect to delay.