Fast Inter-RAT Handover Estimation for Rapid Re-Authentication using Log Likelihood Ratio Weight Factored Distribution Technique in HetNet

摘要

Heterogeneous Wireless Networks are spectrum efficient and gives user the freedom of connectivity. Heterogeneous handover always had been a challenge for seamless roaming. Security aspects like authentication and re-authentication was a key factor in providing seamless connectivity. This paper brings a mathematical method of solving the handover decision in heterogeneous radio condition using rapid re-authentication mechanism. The proposed method uses Log Likelihood Ratio Weight Factored Distribution Algorithm (LLR-WFDA) to make wise decision for Fast Inter-RAT Handover Estimation. Novelty factor lies in implementing the algorithm at the access point and at user device level thus reducing multiple re-authentication mechanism across several network elements. This work helps service provider to offer spectrum efficient distribution of services like DVB-TH, MBMS and other multi-media services. Mathematical analysis and Simulation results have shown that multi-media serviced user was able to seamlessly connect to networks with low latency and improved quality of service. Compared to existing methods, the proposed algorithm has shown better results in reducing the authentication and re-authentication delays on a given network scenario.