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Device-to-device (D2D) communications facilitate promising solutions for service optimization and spectrum/capacity efficiency in the Third-Generation Partnership Project (3GPP) networks. A key enabler for D2D communications and proximity services (ProSe) is the device discovery process. Currently, many aggressive peer discovery methods discussed in 3GPP could induce high energy consumption. Therefore,...
In this paper, we consider the use of heterogeneous networks with close integration between the cells, using dual connectivity and fiber optic backhaul. The energy efficiency of such a network is evaluated in comparison with some of the existing traffic offloading mechanisms. We try to enhance the mechanisms taking the system energy efficiency, and user quality of experience based on the offloaded traffic...
In this paper, we present a novel small cell activation mechanism for heterogeneous networks, which considers the energy saving gains obtained based on the amount of traffic load offloaded from the macro cell to small cells, while avoiding UE QoS degradation. The main idea is to offload traffic to small cells in energy saving mode, only when there is significant energy saving gains achievable from...
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