As the real user measurement data

Drive Test（DT） data takes advantage of wireless linear network evaluation

especially in the subway scene that the running line is fixed and the cell handover relationship is fi xed. Because of no GPS

it must be recorded some information such as stop name by hand in the subway. Based on the DT data and time stamp of arrival and departure

a new method of DT data coverage presentation in the subway scene is presented innovatively. It can intuitively display the wireless network coverage problem for the subway line segment

and provides reference for the wireless network optimization of the subway network.