Research On The Networking Technology Of The 5^th Generation Mobile Communication System

With the entry of wireless communication technology into the 5G era,the networking technology and the cell structure are complicated and diversified.The widespread deployment of low-power base stations,the coexistence of multiple access technology and the application of multiple enhanced technology in the network are all effect the operation and organization of the network.At the same time,users of wireless networks require increasingly high quality of service and network performance,the network must meet the various requirements of users in order to protect the user's quality experience,so as to ensure loyalty of customers and reduce the loss of users.In order to reduce the human intervention,to maximize the efficiency of network operation and maintenance,to achieve higher speed data transmission and more efficient use of the spectrum,the future cell networking scheme will be in the form of a dynamic structure of heterogeneous network which deployed ultra-dense low-power base stations which is adapt to the requirements of users and distribution of access and networking process modular approach.In this paper,firstly,the key technologies and application scenarios of the 5G cell network are studied.Secondly,the scheme of the residential area network proposed in the literature and patent are analyzed in detail,and the application of the enhanced technology in the networking schemes are analyzed and summarized,including the networking scheme based on eICIC,SON,CoMP and so on and studying how to combine the networking technology and enhanced technology.Thirdly,two dynamic networking schemes in the UDN system and HetNet system respectively are proposed.The main contents of the paper are summarized as follows:(1)A user-centric networking scheme for constructing downlink dynamic cells based on CoMP joint transmission and resource allocation in a ultra-dense network(UDN)system is proposed.The topology of the cell will be determined according to the user's location and user's QoS(Quality of Service)rate speed requirements and dynamic changes.The scheme consists of two parts:the selection of the served antenna units of the access users and the resource allocation in the frequency domain.Simulation results show that this scheme not only guarantees the QoS requirements of user terminals,increases the system throughput,but also reduce the calculated overhead according to the networking information buffer table.(2)A dual-loop networking scheme for dynamic cell selection based on network mode selection and low-power antennas node(LPAN)clustering for two-tier heterogeneous network(HetNet).The network is composed of macro base stations,and the LPANs.The scheme collects the location information,the QoS requirement,the channel quality indicator(CQI)information of the access terminal in the service area through the software defined network controller(SDN-C),and through a series of resources calculated analysis to determine the service users of the macro base stations,LPAN and radio resource allocation model.The simulation results show that the scheme can dynamically construct the cell according to the related information of the access terminal and form a dynamic network of the cell,increase the system throughput,and achieve relatively good performance of system spectral efficiency when the ultra-dense deployment of low-power antenna nodes.