An array of base band processors cooperating for sharing processing power in managing and controlling user equipment traffic in a small cellular communication base station (Femtocell). The base band processors array comprises: a master base band processor; and a plurality of slave base band processors, wherein each base band processor comprise a processing unit, a first layer engine, and communication, control and interface modules providing scalability support functionality, and wherein the processing unit and the first layer engine are arranged in cooperation to manage and control user equipment traffic in the cellular communication base station, and wherein the scalability support functionality is arranged to enable coherent and aligned cooperation between the master base band processor and the plurality of slave base band processors connected thereto. Advantageously the array of base band processors may achieve tight control over base station power consumption, increased range and adjustable number of supported users.