标题：Cost Efficient Power Allocation, User Association and Energy Management in H-Cran with Hybrid Energy Sources
作者：Lin, Peng ;Ma, Piming ;Ma, Yanbo ;Han, Wencong
作者机构：[Lin, Peng ;Ma, Piming ;Ma, Yanbo ;Han, Wencong ] Shandong University, Qingdao, Shandong; 266237, China
会议名称：11th International Conference on Wireless Communications and Signal Processing, WCSP 2019
会议日期：23 October 2019 through 25 October 2019
来源：2019 11th International Conference on Wireless Communications and Signal Processing, WCSP 2019
关键词：convex optimization; cost efficiency; energy harvesting; H-CRAN; resource allocation
摘要：In this paper, to mitigate the consumption of grid power, we investigate the hybrid energy supply scheme of heterogeneous cloud radio access network (H-CRAN), where remote radio heads (RRHs) are powered by both energy harvesting technology and conventional grid while macro base station is solely powered by grid. It is helpful for RRHs to cooperate in energy sharing when a part of them is energy sufficient, while the other is not. Specifically, the joint power allocation, user association and energy management problem in downlink of H-CRAN system that maximizes the cost efficiency (CE) of system is studied. Under the constraints of minimum data rate requirements of user equipments and maximum cost limitation of system, a mixed-integer nonlinear programming problem is formulated, which can be reformulated to an equivalent convex feasibility problem and solved by Lagrange dual decomposition methods. Numerical results demonstrate that optimal resource allocation and energy management are done and higher CE is achieved. © 2019 IEEE.