Nowadays the deployment of Femtocell has become a promising solution to improve indoor coverage and high data rates for wireless communication. Femtocell is a short-range, low-power and low-cost cellular access point. It is integrated into the coverage area of Macrocell in an unplanned manner. The seamless switching between Macrocell and Femtocell is a major challenge of wireless networks, which is performed by the Handover procedure that can guarantee an efficient Handover of user equipment from/to or between Femtocell and offer an effective Handover management in cellular network. In this paper, we present the major issues of mobility management for the integrated Femtocell-Macrocell network. We propose a novel Handover decision algorithm in Femtocell networks. Unlike the existing algorithm, our proposed algorithm is based on multiple Handover decision parameters. We present a comparative study of the main decision parameters, key features and performance evaluation of Handover decision algorithm. The simulation results show the importance of the integration of Femtocell in the area of Macrocell and the performance improvement of our proposed algorithm.