A fault tolerant location management for MNANET

In an Ad-hoc network, mobile nodes disconnected intermittently. One of the biggest challenges in such network is design of routing protocols that tolerate the nodes disconnection. In this paper, we present a novel schema to perform fault tolerant location management named FTLM. With location management scheme, each source node in the network trusts a small subset of nodes, namely its location servers, and updates them with its new geographic location. Fault tolerance in our approach achieved by redundancy in number of location servers that store node´s positions. Same the Octopus we employ synchronized aggregation technique to decreasing location management overhead. In this technique the location of many nodes updated at many other nodes with only a single packet. Simulation results show that FTLM is more scalable than Octopus and some other location management methods, moreover it is highly fault tolerant in failure prone environments.