Research On The Multi-access Technology In The Emergency System

Emergency Communication System acts as the important role in the city Emergency Command System during the event,big activity ect; The paper aims to discuss and analyse the wireless access methods, like WIFI,WIMAX,Microwave,GSM/CDMA,Comparing these access methods, to select the proper way in the emergency system;With the comparion between these methods, We hope to get the suitable application with these methods; Meanwhile, We focus on the issue how the heterogeneous networks like GSM/CDMA,WCDMA and other mian wireless system coexist in the combined emergency platform; By the detail anlysis of this issue and simulation study on interworking between WCDMA and PHS,WCDMA and WIMAX,WCDMA and TDSCDMA , We get the relevant result;As to the different technology in 3G system,like WCDMA,WIFI,We take a anlaysis and study about the handover and convergence technology in the different-architecture network.