Impact of Femtocell backhaul limitation on performance of Macro-Femto HetNet
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This thesis is a techno-economical study which focuses on addressing the exponentially rising data capacity demand through network densification. The study is based on the two popular deployment strategies; Macrocellular networks and Macro-Femto heterogeneous networks, deployed in a suburban type environment with modern houses. The main aim of the dissertation is to investigate the impact of network densification on capacity, energy- and cost-efficiency of the network, while considering different femtocell backhaul connectivity limitations. The network performance is evaluated for both indoor and outdoor scenarios. A comparative analysis between the macrocellular and macro-femto network is done by increasing the density of the macrocells, femtocells and the operating frequency spectrum. The capacity is enhanced by increasing the density of the cell sites in the network but operators want to generate profit and want to adopt a cost effective solution to cater the problems. The results show that increasing the density of low-cost, low-powered femtocell access points (FAPs) in the network can solve the problem of 1000x future data capacity demand while keeping the CAPEX and OPEX of the network relatively lower than legacy pure macrocellular deployments. The deployment of the FAPs both in indoor and outdoor environments enhances the network capacity. This study helped in providing results, understanding and insight of both technical and techno-economical aspects of different mobile network deployment and densification solutions. Furthermore, the outcome of the thesis will give some guidelines for network vendors and mobile operators in evolving their network in future.