Method and apparatus for congestion mitigation

A method for performing congestion mitigation in a mobile communication network, comprising a core network and a radio access network (RAN), said RAN comprising a wireless base station being an access point that can be commonly shared among multiple user equipments (UE), said core network being a network that is operated by a network operator and comprising a packet gateway (PGW) which comprises a policy and charging enforcement function (PCEF) module, and further a policy and charging rules function (PCRF) module which is separate from said PGW, said method comprising the steps of: detecting a congestion status in said RAN, providing by said PCRF module one or more congestion mitigation policies which respectively define a plurality of congestion mitigation measures to execute in case of a congestion to said PCEF, receiving and storing said one or more congestion mitigation policies at the PCEF, wherein the method is characterized by notifying said PCEF about said congestion status by said RAN, receiving said congestion status notification at said PCEF, wherein said one or more congestion mitigation policies provided to the PCEF by said PCRF module comprising congestion mitigation measures, said method further comprising: determining based on said plurality of congestion mitigation measures by said PCEF a congestion mitigation measure according to said congestion status notification and executing said determined congestion mitigation measure to thereby enforce said one or more congestion mitigation policies.