The present invention relates to a centralized power allocation method in a wireless telecommunication system comprising at least a first couple of terminals, consisting of a first transmitting terminal and a first receiving terminal, and a second couple of terminals, consisting of a second transmitting terminal and a second receiving terminal. A control node partitions the interference diagram between the communication of the first couple and the communication of the second couple, into different areas, each area being associated to a type of processing of the interference. The control node calculates the minimum power curve for each communication in each said area. The power values to be allocated are given by the coordinates of the point of intersection of both curves in said diagram.