Algorithm for Vertical Handover based on GRA and User preference

Abstract

As of today, multiple heterogeneous wireless networks have been deployed across geography. This has become possible due to developments & growth in the areas of Information & Communication Technologies. Considering the simultaneous existence of multiple Radio Access Technologies (RATs), the problem pertaining to the selecting the best n/w, all the time & place, has become crucial. The smart mobile phone user, based on his requirements and priorities, should get latched to the best network among the available set of various candidate n/w. The issue of network selection can be resolved by effective Vertical Handover (VHO). The choice of the best network can be made by applying the multi attribute decision making technique called as Grey Relational Coefficient (GRC). This research paper presents an algorithm for network selection based on GRC. The scores of the networks are calculated basis GRC and then the handover is happens to the best network. The main criteria considered for network selection are RSS, bandwidth, cost & user velocity.