A method of optimizing the quality of a cellular network which includes at least one iteration, each iteration including a step of estimating at least one local performance indicator at a plurality of points of the cellular network as a function of parameters of the cellular network; a step of estimating a global quality level of the cellular network for the parameters on the basis of a local quality level as estimated at each of the points and for the parameters, the local quality level depending exclusively on the local performance indicators, the parameters being modified so long as the global quality level can be improved; and a step of storing the parameters corresponding to the global quality level.