Research On Networking Protocols For Next-generation New Network Structures

With the development of wireless communication networks and mobile Internet technologies rapidly,distributed satellite networks,dense UAV networks,and car networking,as the important parts of next-generation wireless communication networks,have presented a layered and heterogeneous new network structure.In this hierarchical structure,different nodes exhibit completely different transmission characteristics.According to these different transmission characteristics,the network presents the unique characteristic of a combination of centralized and distributed.At present,in the research on the next generation network,the research on the new network system and characteristic are still in its infancy.Therefore,in order to meet the higher demands of users on the next-generation new network in the network structure,network performance,and service transmission process,it's necessary to research a new networking technology suitable for a centralized and distributed combined network.Therefore,this paper studies the network architecture of the Center-controlled Multi-hop Wireless Network(CMW)based on the new network structure characteristics of the combination of centralization and distribution in the next generation.According to the characteristics of hierarchical heterogeneity,the framework designed a network protocol with separated control plane and business plane,and realized a "centralized management and distributed transmission" management and control system.The management and control system can effectively solve the problems of complex structure and difficult control of traditional distributed network systems;the use of technology that separates the control plane from the business plane can greatly reduce routing overhead,and combined with the principle of cross-layer optimization,it can effectively control Network resources,improve network throughput,solve the problem of low network efficiency,and ensure the quality of service at the receiving end.The content of this article are follows:1.Aiming at the problems to the complex structure of the existing distributed network and the difficulty of operation and management,this paper studies the network architecture of the Center-controlled Multi-hop Wireless Network based on the characteristics of combining centrality and distribution in the next-generation hierarchical and heterogeneous network.And in this network,the central control node can manage and control the distributed multi-hop network.2.Proposed the network protocol and MAC protocol with separate control and business planes,realized "centralized management and distributed transmission" of a Center-controlled Multi-hop Wireless Network.Based on the central control node's management and control of the entire network,the topology discovery,reachable path set search algorithm,and path minimum interference algorithm are proposed on the control plane of the network protocol.The reachable path set search algorithm calculates multiple paths with small to large path hops for the source and destination nodes;the path minimum interference calculation is based on the reachable path set search algorithm for each pair of source and destination nodes.A path with the least interference with other source and destination nodes.3.Aiming at the problems and challenges in the transmission of large-capacity services,a Cross Layer Optimization Algorithm(CLOA)combining path selection and resource allocation was proposed.In this algorithm,in order to manage resources accurately,a CLOA that combines TDMA-based path selection and resource allocation is proposed,and a matching frame structure is designed for this algorithm.For the transmission of large-capacity services,the central control node uses the reachable path set search algorithm and the path minimum interference algorithm to select the path,and then allocates time slots for the selected path according to the TDMA frame structure,thereby ensuring the availability of resources.4.Used the OPNET simulation platform to build a comprehensive simulation system,gave the design ideas and specific implementation methods of the simulation framework.The computer simulations verified the correctness of the network structure,networking protocols and algorithms proposed in this article.