Patent ID: 8493860
Filing Date: 2013-07-23
Classification: H04L,H04W

Abstract:
1. A method for detection and notification of congestion in a radio access transport network including one or more radio network controllers coupled to one or more radio base stations, comprising: monitoring data packet flows, each data packet flow associated with a mobile radio terminal communication and being controlled in the radio access transport network by one or more corresponding flow control entities, for congestion in the radio access transport network; detecting a congestion area in the radio access transport network being used by a group of multiple monitored data packet flows grouped based on delay values or packet loss values associated with the data packet flows in the group, wherein the detected congestion area is a congested communications link in the radio access transport network, a congested radio network controller, or a congested radio base station being used by the group of multiple monitored data packet flows; communicating congestion notification information to the flow control entities corresponding to the group of multiple monitored data packet flows that use the detected congestion area so that one or more of the informed flow control entities may take a flow control action based on the congestion notification information.