Presently

it is the common method for the analysis of network coverage and user behavior based on administrative region or base station.However

the range of administrative region is too large to analysis of the problem.And the point of base station is narrowly

it is hard to describe the problem of the continuous coverage of the mobile network consequently.For this reason

the grid is the other method that is raised in this paper.The analytical method of grid is described in more detail

also

in the paper

it is discussed how to use the method of grid to planning and optimizing the mobile network at the first stage of TD-SCDMA sixth.