基于可再生能量协作的雾无线接入网络资源分配

针对雾无线接入网络(Fog Radio Access Network,F-RAN)中能耗开销巨大的问题,提出了一种基于能量收集(Energy Harvesting,EH)约束的资源分配算法,从联合模式选择与功率分配两个方面进行了研究.首先建立传输模型和能量采集模型,根据功率约束和电费支出约束建立最优化问题;再使用分枝定界法对通信模式进行选择,利用吞吐量注水法对不同传输模式下的发射功率进行分配.仿真结果表明,提出的基于可再生能量协作的F-RAN的吞吐量和电网能量效率均高于传统F-RAN,具有经济和环境双重效益.

Resource allocation in fog radio access network based on renewable energy cooperation

To solve the problem of substantial energy consumption in fog radio access network(F-RAN),a resource allocation algorithm based on energy harvesting constraint is proposed by achieving joint mode selection and power allocation.First,the transmission model and energy collection model are established,and the optimization problem is established according to the constraint of power allocation and energy cost.Then,the selection of the communication mode is investigated by the branch and bound algorithm.The transmission power of different transmission modes is allocated by the throughput water-filling method.Simulation results show that the throughput and grid energy efficiency of the proposed F-RAN based on renewable energy cooperation are higher than those of traditional F-RAN,and it has economic and environmental benefits.