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In this paper, we address the problem of power consumption minimization in Heterogeneous networks (HetNets) of China Mobile by implementing dynamic base stations (BSs) switching operation. Particularly, considering the minimal rate requirements of users as well as the realistic power consumption model of BSs, we formulate the problem as an integer linear programming which is NP-complete. Then, to...
As energy saving becomes a major concern in LTE, we propose a novel energy saving approach with interference reduction enhancement in LTE. Firstly, new power model is introduced in energy saving gain analysis. Then three categories of symbol level PA shutdown schemes are analyzed and their performance is also evaluated quantitatively. In the end, a comprehensive strategy is proposed, simulation results...
In this paper, we address the energy conservation problem with the quality of service (QoS) requirements taken into account for the physical downlink shared channel (PDSCH) in LTE/LTE-Advanced networks. By jointly allocating the modulation and coding schemes (MCS), resource blocks (RB), and power, we first propose a standards-compliant QoS-oriented power control algorithm (SQPC) for realistic systems...
In this paper, by jointly considering subchannels, power, and Modulation and Coding Scheme (MCS) allocation, we address the sum-rate maximization problem in OFDMA downlink systems. We formulate the problem as an integer linear programming (ILP), which maximizes the system sum-rate subject to the minimum rate requirements of users and total transmit power constraint of base station. To solve the formulation...
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