The invention relates to a method for protecting a mobile communication network from performance impacts, wherein the mobile communication network comprises an access network and a core network, the access network comprising a plurality of radio cells and a plurality of base station entities, and the core network comprising a plurality of network nodes of the mobile communication network, wherein a user equipment is located in a radio cell of the plurality of radio cells, the radio cell being served by a base station entity of the plurality of base station entities, wherein the core network comprises a filter element, the filter element -- either providing a forwarding functionality, to the user equipment, of downlink data packets directed to the specific IP-address or to the specific range of IP-addresses of the user equipment, -- or providing an alternative treatment functionality of downlink data packets directed to the specific IP-address or to the specific range of IP-addresses of the user equipment, the application of the forwarding versus the alternative treatment functionality of the filter element being dependent on load conditions of the mobile communication network at a reception time of the downlink data packets at the core network, wherein at a given load condition of the mobile communication network in case of a particular downlink data packet directed to the user equipment, incoming to the core network, the particular downlink data packet is forwarded to the user equipment if at least one of the following conditions are met: -- the filter element comprises an information that the user equipment is in the activated state, -- a preceding downlink data packet, preceding the particular downlink data packet in time and being directed to the specific IP-address or to the specific range of IP- addresses of the user equipment, has been forwarded to the user equipment, wherein the preceding downlink data packet precedes the particular downlink data packet by less than a predetermined first time interval, -- a preceding uplink data packet, preceding the particular downlink data packet in time and being originating from the specific IP-address or from the specific range of IP- addresses of the user equipment, has been received, by the filter element, from the user equipment, wherein the preceding uplink data packet precedes the particular downlink data packet by less than a predetermined second time interval.
展开▼
