Patent ID: 7649842

Claim:
A method of selective dormant data session reactivation in a radio access network, comprising: calculating an activation rate threshold as a function of a first plurality of packets received over a first time interval, wherein the first plurality of packets are coupled to reactivate at least one dormant mobile station and wherein the first plurality of packets are received by a packet control function that communicates the plurality of packets between the at least one dormant mobile station and a Packet Data Serving Node; buffering by the packet control function a second plurality of packets received in a second time interval, wherein each of the second plurality of packets has a destination IP address coupled to reactivate the at least one dormant mobile station; comparing by the packet control function an arrival rate of the second plurality of packets in the second time interval to the activation rate threshold; if the arrival rate exceeds the activation rate threshold, the packet control function: separating the second plurality of packets into a plurality of source IP groups according to their respective source IP addresses; discarding a one of the plurality of source IP groups having a highest number of the second plurality of packets; iteratively performing the following steps until arrival rate is below the activation rate threshold: comparing the arrival rate of the second plurality of packets in the second time interval without the one of the plurality of source IP groups, to the activation rate threshold; and if the arrival rate of the second plurality of packets in the second time interval without the one of the plurality of source IP groups exceeds the activation rate threshold, discarding a one of the plurality of source IP groups having a next highest number of the second plurality of packets.