Abstract: In the coal mine underground mobile target location system,designing a wireless communications solution which has great ability to identify concurrent can effectively reduce the leakage read rate and improve system reliability,so as to improve system performance of coal mine mobile target location system.Combining with performance requirements of the mine positioning system,revolving around the leakage read rate of tags in the mine position system,on the basis of analyzing the wireless communications technology for positioning system and its influence on leakage read rate,the paper designed the "time slicing schedule" method to reduce the leakage read rate,and calculated the wireless collision probability and leakage read rate by mathematical modeling and probabilitycalculation.