Resource Allocation for Green Cloud Radio Access Networks With Hybrid Energy Supplies
Resource Allocation for Green Cloud Radio Access Networks With Hybrid Energy Supplies
复制标题
具有混合能源供应的绿色云无线电接入网络的资源分配
DOI:
10.1109/tvt.2017.2754273
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发表时间:
2017-09
影响因子:
6.8
通讯作者:
Zhang Yaoxue
中科院分区:
文献类型:
--
作者:
Zhang Deyu;Chen Zhigang;Cai Lin X.;Zhou Haibo;Duan Sijing;Ren Ju;Shen Xuemin;Zhang Yaoxue
In this paper, we study sustainable resource allocation for cloud radio access networks (CRANs) powered by hybrid energy supplies (HES). Specifically, the central unit (CU) in the CRANs distributes data to a set of radio units (RUs) powered by both on-grid energy and energy harvested from green sources, and allocates channels to the selected RUs for downlink transmissions. We formulate an optimization problem to maximize the net gain of the system which is the difference between the user utility gain and on-grid energy costs, taking into consideration the stochastic nature of energy harvesting process, time-varying on-grid energy price, and dynamic wireless channel conditions. A resource allocation framework is developed to decompose the formulated problem into three subproblems, i.e., the hybrid energy management, data requesting, and channel and power allocation. Based on the solutions of the subproblems, we propose a net gain-optimal resource allocation (GRA) algorithm to maximize the net gain while stabilizing the data buffers and ensuring the sustainability of batteries. Performance analysis demonstrates that the GRA algorithm can achieve close-to-optimal net gain with bounded data buffer and battery capacity. Extensive simulations validate the analysis and demonstrate that GRA algorithm outperforms other algorithms in terms of the net gain and delay performance.
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影响因子:
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作者:
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通讯作者:
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影响因子:
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影响因子:
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通讯作者:
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影响因子:
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通讯作者:
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