4G emergency communication support was an important piece in controlling infl uenza COVID-19. The study attempted to digitize the geo-graphical location of each customer unit

and designed a new method to calculate the potential 4G cells covered each target area quickly

based on "rough picking of distance ＆ choiceness of direction". It was shown from verifi cation and test that the new method not only ensures the accuracy

but also greatly simplifi es the redundancy

compared with the traditional method. It was conducive to improving the accuracy and effi ciency of communication support work. It was helpful to improve the accuracy and effi ciency of communication support work.