Research on System Application of Network Wireless Transmission Technology Based on Computer SDN

This paper first introduces the use of SDN technology to realize the bidirectional network structure of NGB-W. And the function of each level is analyzed in detail. On this basis, it is proposed to use OpenFlow technology to manage SDN in the bidirectional network of NGB-W. On this basis, a wireless communication system using SDN technology to realize DDoS protection is introduced. Finally, the simulation platform of the fusion network is established by using NS-3 simulation software. The article compares and evaluates the simulation results in various cases. Through simulation verification, the method proposed in this paper can effectively reduce and improve network congestion, reduce network delay, and improve saturated throughput.