Abubakar Muhammad Miyim, Kabira Umar and Ahmed Ibrahim Kiyawa1

Keywords: Vertical Handover; Fuzzy; Power Level; Bandwidth, Cost.

Abstract

Handover decision is one of the enhancement mechanisms that plays vital role in heterogeneous wireless networks. It has become necessary therefore, to consider mobility issues and Quality of Service (QoS) provisioning to users when designing handover algorithm for heterogeneous wireless networks. The proposal is an approach for selecting a network based fuzzy logic and derived by Analytic Hierarchy Process (AHP) method. The work considered Power Level, Cost and Bandwidth as metrics for reducing the handoff execution, while prolonging the battery life span of the mobile equipment. Consequently, a Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) method was used in ranking the networks availability, the result of which demonstrates improved system performance. It was evident that the method proposed when compared to other methods has demonstrated an edge over other methods with the highest relative standard deviation in terms of handoff priority and probability of minimizing handoff failure.