Optimal Allocation Of Multidimensional Resource In Wireless Powered Communication Network

In the course of the development of modern wireless technology,the problem of limited battery life has been always existed.In order to solve this demand,the radio frequency wireless energy transmission technology(WET RF-enabled)was invented.An important application of RF wireless energy transmission technology WET is wireless powered communication(Wireless Powered,Communication,WPC).Based on the above technology,a communication network architecture called wireless powered communication network(Wireless Powered Communication Network,WPCN)had been propose,in this architecture the wireless devices use the harvested energy to transmit information.However,most researchers do not do more theoretical research on the system stability of WPCN communication system.Therefore,this paper proposes a dual queue model based on WPCN,through the optimization algorithm to dynamically adjust the dual queue stability and achieve the goal of the optimization of WPCN system.In order to meet the needs of sustainable and order of the whole communication system,a new generation of communication protocol based on the above architecture has been proposed.One of the most widely used protocols is the Harvest Then Transmit Protocol HTT(Protocol),which is the most widely used protocol.In this paper,based on the full understanding of the status of the communication protocol at home and abroad,by combining the improved HTT protocol proposed in this paper,we optimize the allocation of resources management,the system operation efficiency,system life,transmission capacity and throughput effectively.The main research work is as follows:1)The utility optimization of concurrent communication system based on HTT protocol and TDMA mode.We provides a new wireless communication way between the wireless devices,which is based on the original HTT protocol,to coordinate the various devices by combining HTT and TDMA technology(Time Division Multiple Access,TDMA),so as to avoid the signal interference between different wireless communication equipment,improve the quality of communication and security system capacity increases,then we apply the protocol based on double queue model to WPCN.The problem of System utility maximization is studied in this paper under the long time average,according to Lyapunov optimization technology to implement the time allocated,the sensor node's original rate control,energy consumption control and reasonable distribution system of the three resources distributed optimization,making the system utility function optimization and ensure the stability of the queue system.2)The optimization of system utility of parallel information transmission of multi user based on HTT protocol.In order to shorten the time of information interaction between the wireless devices,we using the way of parallel information transmission of multi user on HTT protocol's UL process,this way also bring information interference problem.Because of the existence of interference,makes the problem become a nonconvex problem,this paper uses the method of first-order Taylor series approximation and successive convex approximation to solve the non-convex problem,combined it with the Lyapunov optimization technique then put forward DAL(Double Approximation with Lyapunov optimization Algorithm)algorithm,which is a good solution to the problem,to achieve a reasonable allocation of time slice allocation control,sensor node primary rate control,energy consumption,it achieves the optimization goal of system utility.