Improving Manets Qos Services using Dynamic Topology and Spectrum Sharing in Cognitive Radio-Manets

MANETs is the best wireless network and helps for unlimited mobility without depending on other infrastructure. The mobile network is a challenging task for maintaining quality of service, protective routing and dependable communication. The purpose model with QOS routing is to select a secure optimal route from starting to ending and have to satisfy two or more QOS constrains. In MANETs the Cognitive Radio technology is the top layer in mobile ad hoc networks. The role of CR is to control the topology in Cognitive Radio-MANETs. In existing system there is no fixed topology because of the interference, multi path propagation mobility. So, in proposed system to do network function properly we enhanced the efficient scheduling techniques and topology with ant colony optimization techniques. The QOS service is processed in heterogeneous networks. The algorithm such as cognitive radio spectrum sharing algorithm, and Hungarian algorithm are used to evaluate the data rate and spectrum utilization. The experimental results are performance detect spectrum utilization and increase the data rates. The simulation result is implemented in NS-2 shows better performance in throughput and data rates.