Performance Improvement of Two Scalable Location Services in MANET

Many of position-based routing protocols assume that a location service is available which provides location information on the nodes in the network. H2SaLAM uses a dynamic hierarchy between location servers. SHGRID using one hop chain technique has prevented decreasing of data delivery rate and it has increased the delay experienced by data packets. All of methods use location prediction method, near to destination. Our solutions decrease location update without loss of query success probability or throughput and even increase those. The algorithms are distributed and can keep scalability in scenarios of increasing nodes density and mobility. Totally simulation results show that our methods are effective.