Method for controlling data flow associated with a communications node

This invention relates to a method for controlling data flow associated with a communications node; more specifically a communications node that services a wireless communications system. A communications node admits the receive data message to the buffer memory if the receive arriving message falls within the capacity range of a class of the receive data messages and if the buffer memory is not congested. A state detector detects if the buffer memory is congested by evaluating the occupancy rate of the buffer memory, or otherwise. The capacity range determines the utilization of buffer memory by a particular class of data messages, which may be defined in accordance with an estimated economic value rating of the data messages.