Research On Joint Design Method Of Carrier Aggregation And COMP In Mobile Micro Basestation Scenarios In HETNET Networks

With the rapid development of mobile terminal intelligent devices and mobile Internet,the data traffic business presents an explosive growth.It puts forward,more capacity,coverage,user fairness and energy efficiency for the existing wireless communication network.As the inevitable trend of the development of the traditional cellular network,Hetnet network technology is a hot topic in the academic field.Hetnet network deploys a large number of low power stations in traditional cellular networks to provide hot area traffic diversion and improve the access volume of the entire network.It alleviates the throughput problem of the traditional cellular network and provides better quality of service for the users.The introduction of mobile low power base station in Hetnet network will provide seamless network coverage for users and further improve the quality of user service.However,the introduction of Hetnet network technology has also brought about a series of problems such as high cost,complex interference and high energy consumption.How to solve the above problems is the key point of Hetnet technologies research.This dissertation focuses on the study of joint wavelet aggregation and CoMP design methods for mobile micro-base station scenario in Hetnet,including the overview of carrier aggregation and multipoint coordinated transmission technologies,and summarizes the problems existing in Hetnet with mobile micro-base station deployment.Proposed solutions and recommendations based on carrier aggregation and multipoint coordinated transmission technology.In the first chapter,the paper introduces the background of the research,the research status of carrier aggregation and multipoint coordinated transmission in Hetnet,and summarizes the deficiencies in previous work.In the second chapter,this paper describes in detail the type,implementation scheme,deployment scenario and research status of carrier aggregation,and discusses the basic principles of multi-point coordinated transmission,various mechanisms of downlink cooperative transmission,and the research status of multiple points.Summary and induction.This paper first put forward in the third chapter for Hetnet mobile station scene resource allocation scheme of carrier hybrid genetic particle swarm method based aggregate realizes dynamic resource allocation according to the power limit of base station,user QoS requirements and user information carrier aggregation ability,the resource allocation and power allocation scheme into chromosome genetic information and particle position information,the original problem is transformed into a limited allocation request.The simulation shows that the method can improve the fairness of user while improving the system throughput.In the fourth chapter,this paper proposes a method for collaborative CoMP carrier aggregation and set selection and subcarrier allocation based on mobile base station deployment in Hetnet,making full use of the carrier aggregation in frequency domain diversity gain and CoMP diversity gain in the airspace.The location and speed information of mobile base station is determined by combining the location method of AOA and TDOA,and then the JP CoMP cooperation set selection is carrier out,according to the user-centered adaptive distributed clustering criterion.Finally,the sub-carrier allocation is allocation minimization.The simulation results show that the proposed method can effectively improve the throughput of the system,the average throughput of the mobile base station and the system energy efficiency.