Cabin Wireless Network Layout And Performance Analysis

At present,many foreign airlines have already arranged wireless network system in the cabin,and some domestic airlines have started to try.In the future,it is the general trend to use wireless network in the cabin.This paper is based on the research of Domestic large aircraft.The main research is to assign the AP in cabin to ensure that the passenger can watch 720 p video smoothly.This paper studies the AP performance.When studying the influence of node growth on AP performance,firstly,through theoretical analysis,it is concluded that node growth has little impact on AP performance in RTS/CTS mode.Then,the effect of node growth on AP performance is measured using AP working in 2.4 GHz band under 802.11 n protocol.This paper also studies the influence of channel interference on AP performance.The research method is through testing.This paper studies the path attenuation of signals in the cabin environment.This paper introduces the channel model under the 802.11 protocol.However,the cabin environment is complex,the general model is difficult to match the cabin environment.Therefore,this paper uses the simulation method to conduct auxiliary research.In this paper,CATIA was used to build the CAD model of the aircraft,and FEKO was used for electromagnetic simulation to calculate the path attenuation.In this paper,maximum SIR is used to establish the channel allocation model of the cabin,The interference factor is also discussed when establishing the channel allocation model,and finally the matrix model of channel allocation is established.In this paper,the simulated annealing algorithm is used to solve the channel assignment model,and the solution is measured in the passenger cabin.