Modified Efficient Handover Mechanism for WiFi-WiMAX Heterogeneous Network Environment

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. The simulation results shows that proposed method outperforms the state-of-art methods.