1. A method of data traffic congestion management, comprising: receiving data packets; placing at least a portion of the received packets in a queue buffer; measuring load of queue buffer to extract at least one queue parameter Q; providing the at least at least one queue parameter to an AQM; calculating p′ as a proportional and integral control function on the Q parameter and a target Q parameter, wherein p′ is p 0.5 and p is the probability that a received packet will be dropped or marked; determining whether to apply a drop decision or mark decision to a received packet; and determining, if applying a drop decision, whether to drop a received packet by a drop probability that is proportional with p′ 2 .