The invention relates to a method, by a Policy and Charging Rules Function, PCRF (100), of a mobile communications network, to control a signalling of congestion information of mobile entities at a plurality of Radio Access Network Congestion Awareness Functions, RCAFs (200), which monitor which mobile entities are affected by congestion in a radio access network (10) of the mobile communications network, the method comprising the steps of receiving, from one of the RCAFs, an indication that one of the mobile entities is affected by congestion, storing said one RCAF from which the indication is received as the current RCAF for said one mobile entity, receiving, from another RCAF, an indication that said one mobile entity is affected by congestion, and indicating, in response to the indication received from said another RCAF, to the current RCAF to release a context for said one mobile entity.