Research On Networking Technology Of Green Virtualized Backhaul Network Based On Multi-operator Cooperation

With the development of information technology,the development of network virtualization technology has a very important position.This technology saves on usage costs,reduces expenses and ensures network security.Due to the rapid development of cellular networks,energy consumption is also increasing,so green energy supply not only saves costs but also reduces environmental pollution.In the future small cellular network,its backhaul link is very dense,resulting in a large energy consumption and resource infrastructure consumption,so operators can form a virtualized backhaul network,using other operators' infrastructure resources for data.Volume transfer,reducing resource consumption.There are energy providers and operators in such systems,which face storage issues for energy providers,pricing issues for operators,and how to form a virtualized backhaul network among operators.To solve these problems,this paper proposes a green virtualized small cell backhaul network model,which includes virtual operators,assembly operators and renewable energy suppliers,which form a three-stage Stackelberg game model.The virtual operator(VO)can forward the amount of data to the demanding operator using the backhaul network of some assembly operators(AOs).Among them,some backhaul nodes(ie,grid-connected nodes)of each assembly operator are considered to be powered by a renewable energy supplier(RPS).First,in order to meet the demand for random data in the wireless link,the virtual operator decides to pay the price of the service provided by the assembly operator,and the assembly operator decides the energy price to be paid to the RPS.In addition,each assembly operator should determine the amount of renewable energy that its off-grid nodes should retain and how much renewable energy should be stored per RPS.According to the description of the above network model,the virtual operator,the assembly operator and the renewable energy supplier form a three-stage Stackelberg game model.The model is analyzed by the reverse analysis method.The first step is to determine the energy storage value of the RPS equilibrium,the second step is to determine the equilibrium price share value of the assembly operator,and the third step is to determine the price value of the virtual operatorequilibrium,and finally make all the Participants find a balanced solution.The simulation results show that the proposed integrated green multi-hop backhaul system yields substantial gains for both operators and renewable energy suppliers compared with a non-virtualization backhaul network using conventional energy.The results also provides insights on how to manage cellular backhaul virtualization pricing and the cost of renewable energy for the design of green dense smell cell networks in future mobile networks.