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可再生能源供电的蜂窝网络相关研究已经成为绿色无线网络热点研究内容之一.针对可再生能源供电异构蜂窝网络场景,提出了一种基于拓扑势的用户接入算法,实现基站间能量均衡与负载均衡的折中.定义用户与基站间拓扑势,综合考虑用户业务量、用户与基站间信道容量、基站可用能量,衡量基站对用户的吸引程度;将基站所接入用户拓扑势总和定义为基站效用值,并给出了基站间效用公平的用户接入最优化问题;提出了一种迭代方法求解最优化问题,通过用户与基站间信息交互与迭代更新完成用户接入基站选择,均衡基站间能量与负载.仿真结果表明,所提算法在保证基站间负载均衡的同时充分利用了基站收集的可再生能源,实现了基站间能量均衡.
Researches on cellular networks powered by renewable energy have become one of the hot topics in green wireless networks.Aiming at renewable energy-powered heterogeneous cellular networks, a topology-based user access algorithm is proposed to achieve energy balance between base stations and The trade-off between load balancing and user load, defining the topological potential between users and base stations, taking into account the user traffic, the channel capacity between users and base stations, the available energy of base stations, and the degree of attraction of users to base stations; Base station utility value, and gives the user access optimization problem of fairness between base stations. An iterative method is proposed to solve the optimization problem. The user access base station selection is completed through information exchange and iterative updating between user and base station, The simulation results show that the proposed algorithm makes full use of the renewable energy collected by the base station while ensuring the load balance among base stations and achieves the energy balance among base stations.