Seamless Vertical Handover for 4G Wireless Networks

A user in 4G network needs to have a seamless vertical handover so as to backward compatible with 3G and 2G wireless networks. In the existing methods the handover is performed based on user policies at each time and by using the neural network model. This is an issue for the handover based on the time needed to take the handover and the reduction in traffic-carrying capacity. To overcome these limitations, an algorithm TAHDM has been developed where the decision is made by using the context information from the mobile node, networks and the user as well as the RSS. In this paper, a new vertical handover algorithm is developed based on the TAHDM algorithm to improve the parameters supported for vertical handover. Here the parameters handoff latency and the network load balancing are included in the algorithm to provide the seamless service to the user.