Authentication based on blind signature and ring signature algorithms during vertical handover in heterogeneous wireless networks

In the present 4G era, with the help of vertical handover (VHO), mobility and handover management are handled effectively across heterogeneous network as seamless and ubiquitous connections. The decision making process of VHO selects the best optimal access point. The research proposes a three tier model for handover and proposes two authentication algorithms, based on blind and ring signature, used during execution of VHO. The VHO model is developed in such a way that multiple parameters are used in every stage which includes selection of candidate networks during discovery, mathematical based decision making and authenticated execution. The network system allows the connections to be switched fairly without break or loss of QoS by properly combining the handover execution with a fair authentication procedure. This reduces unfairness and repudiation coming from distrusted network users. Our proposed model ensures continuous quality service through VHO bringing the solution in terms of correctness and efficiency.