Research On Wi-Fi Co-Frequency Interference In High-density Environment And Network Optimization

With the development of the application of the Internet of things,the wireless data services are growingrapidly.The demand for short-range wireless communication devices is increasingand most of these devices work in public ISM bands,such as campuses,shopping malls,airports,and other areas.Most wireless network users do not have strong awareness of network planning when setting up wireless Local Area Networks.Wi-Fi free attenuation and obstacle attenuation have not received enough attention,and they also ignore the impact of WiFi free attenuation and obstacle attenuation on the quality of WiFi networks.In the highdensity wireless environment where there is a large number of applications,and the channel competition is fierce,radio spectrum resources are becoming increasingly tight.And at the same time,QOS(Quality of Service)of networks is also declining rapidly,which affect the user experience seriously.In a high-density environment,co-channel interference will greatly spread to the mobile terminals of neighboring nodes and external networks,becoming a key factor that affecting the quality of the network.The high-density Wi-Fi network environment will become an urgent network problem to solve in the near future.Therefore,how to improve the quality of the Wi-Fi network,reduce the impact caused by the same frequency interference,improve the user experience and build a healthy Wi-Fi structure system will become a new problem.This article will elaborate the problems that Wireless Local Area Networkswill face in the future,starting with the 802.11 protocol analysis of Wi-Fi networksto presenting optimization solutions for wireless Local Area Networks from the aspects of wireless communication methods,Wi-Fi attenuation,network architecture,and transmission principles.Through experiments,the Wi-Fi network environment under high-density environment is tested and optimized,the optimal proximity distance of Wi-Fi nodes under high-density environment is calculated,and the optimization scheme of Wi-Fi network under specific environment is proposed.Based on a large number of scientific experiments and professional equipment,this article presents a corresponding Wi-Fi network optimization plan after deeply understanding the environmental changes of Wi-Fi networks in different situations.The proposal of these solutions can greatly improve the quality of Wi-Fi networks,and provide a certain reference for the effective sharing of space resources in the common frequency bands.It also helps to make contributions to the reduction of spectrum resources and build a healthy Wi-Fi network environment.