Modified Efficient Handover mechanism For WiFi-WiMAX Heterogeneous Network Environment.

Abstract

The future wireless communication networks, heterogeneous network designing are very important and common
systems. In heterogeneous network, more than one wireless standard can exist so that end users having the freedom to choose
the connectivity based on application requirements and environmental conditions. The two main building blocks of
heterogeneous networks is IEEE 802.11 (called WiFi) and IEEE 802.16 (Called WiMax) due to their cost-effectiveness,
sustainability, and capability of supporting the high data rate in wireless communications. The integration and
interoperability of WiFi and WiMax networks is challenging tasks since from last decade. The WiFi standard provides the
connectivity with short communication range and less infrastructure support. The WiMax needs the specific infrastructure
and provides long communication range. Therefore designing handover decision method for WiFi-WiMax integration is
challenging task in order to achieve the less power consumption, QoS and QoE requirements. In this paper, we are
proposing efficient handover decision technique for WiFi-WiMax integration with goal of achieving, QoS, QoE as well as
guaranteed energy efficiency performance. We are proposing bandwidth management algorithm and energy management
algorithm. Based on these two algorithms proposed handover decision policy is designed to achieve the QoS, QoE and
energy efficiency.