基于电力包的MEC服务器直流供能方法

DC power supply method for an MEC server based on a power packet

针对泛在电力物联网中移动边缘计算(Mobile Edge Computing, MEC)服务器因处理用户的业务请求而产生的能耗,提出一种基于电力包的MEC服务器直流供能方法。传统的供能方法一般利用电网进行,该方法在用户的业务请求量低时会耗费不必要的电能。所提方法基于传输损耗及电力包路由器最大可传输容量,建立以各MEC服务器的满意度最大化为目标函数的优化模型,并进行分步求解,利用一对多匹配博弈以及改进的NSGA-II算法分别解决了路由分配和能量分配问题。最后根据求解得到的时隙个数,可再生能源产生相应的电力包,进而电力包路由器基于其地址将电力包转发至MEC服务器。仿真结果验证了所提模型和方法的可行性和优越性,实现了精准供能,节省了电能。

This paper examines the energy consumption,caused by processing user service requests,of a Mobile Edge Computing(MEC)server in the ubiquitous electric Internet of Things(IOT).A DC power supply method for the MEC server based on a power packet is proposed.The traditional energy supply method is generally performed by the power grid,and this consumes unnecessary power when the user service request level is low.The proposed method is based on the transmission loss and the maximum transferable capacity of a power packet router.An optimization model of the target function of the MEC server satisfaction maximization is established,and then it is solved step by step.The routing distribution and energy distribution problems are solved by a one-to-many matching game and the improved NSGA-II algorithm respectively.Finally,according to the number of time slots obtained by the solution,the renewable energy source generates a corresponding power packet,then the power packet router forwards the power packet to the MEC server based on its address.The simulation results verify the feasibility and superiority of the proposed model and method,realizing precise energy supply and saving electricity.