Perception Of Wireless Mesh Network Interference And Simulation Of Routing Protocols

With the development of4G and LET, wireless network plays a more and more important role in The Things Networking and The Wireless City. Wireless Mesh network (WMN) as a new type of wireless networking technology get a lot of public attention. Routing plays an important role in network performance. So from the research of routing, especially the multi-path routing research has the vital significance. So doing routing research especially the research of multipath routing, has the very vital significance. However there are still some defects in the multipath routing, such as not taking into account Shared wireless medium and channel multiplexing transmission between paths which caused by interference and other issues. Based on multipath routing technology and combining with the WMN this paper aimed at the problem of routing interference. To describe the interference of the network layer through the interface queue length And reaction the overall situation of interference with the congestion of interface queue length.Based on the interference model, the measurement and related research both with the simulation analysis of the packet loss formation reasons, found that the cache interface queue lost package IFQ occupies most of the lost package. So to control the interface queue length can effectively improve the performance of network. And it is rationality that reaction the existence of the interference in the network transmission with the interface queue congestion condition. By selecting the whole path interface of the light congestion degree to transmission data can alleviate the network congestion problems, so as to achieve the purpose of reduce overall network interference. This paper put the routing interference problem as the interface queue congestion perception and control problem. And put forward the IWM interference model based on path integral length and present queue service window loss model M/M/n/n/m based on the packet loss ratio to describe the network’s overall interference.Later, according to the above method this paper implemented the IWM routing protocol based on the AOMDV routing protocol with the IWM interference model.The experiment proved that it is rationally to express the network interference situation with the congestion interface queue length. That’s means, the greater the interface queue congestioned the more serious the interference happened. In the analysis of the simulation parameters this paper proposed the two evaluation index of interference innovatively:the routing response to congestion RRD and congestion packet loss ratio EFQLR. The experiment results prove that the IWM routing protocol improved the disturbance sensitivity against AOMDV routing protocol and the perception of interference take effect...