Dynamic antenna inclination control method for a radiotelecommunication system

A dynamic antenna beam inclination control method for a radiotelecommunication system, notably of the cellular mobile radiotelephony system type, the radiotelecommunication system including a plurality of fixed base stations communicating with a plurality of mobile units, each of the base stations defining a cell and having a transmission and reception antenna whose beam covers a sector in which the mobile units can communicate with the base station, the antenna beam being able to be inclined so as to modify the sector covered, the method including:

• determining, a priori, an optimum inclination by determining an inclination of the antenna beam which is optimum in relation to the sector covered;
• estimating a cell load on the cell, at a given instant;
• estimating a load imbalance between cells by estimating, at the given instant, the load imbalance between the cell and the adjacent cells;
• determining an instantaneous inclination, at the given instant, as a function of the optimum inclination, the estimated cell load, and the estimated load imbalance;
• and
• controlling the inclination of the antenna beam based on the determined instantaneous inclination,
• wherein, when the estimated load imbalance decreases, the increase in the inclination of the antenna beam as a function of the estimated load is lessened.