Method and devices for filtering data packets in a transmission

Control entity for a communication network for initiating the association of a data packet with a packet bearer in a user equipment of the communication network, wherein the packet bearer is adapted to transmit the data packet to a communication entity in the communication network, and wherein the user equipment comprises at least one executing unit for executing one or more applications which create the data packet, a packet marking entity for marking at least one control field in the data packet and a transmission unit for setting up the packet bearer to the communication entity and for sending the data packet on the packet bearer, the control entity comprising an input/output unit for initiating an exchange of signaling information with the user equipment, a processing unit to initiate a first signaling to the user equipment of filter parameters for defining a packet filter, the filter parameters corresponding to a packet marking, and for initiating the establishment of the packet filter corresponding to the filter parameters for scanning data packets forwarded from the executing unit to the transmission unit in the user equipment, and to initiate the association of the packet filter with the packet bearer, the processing unit being furthermore adapted to initiate a second signaling of the packet marking to the user equipment to initiate a marking of the data packet with the signaled packet marking.

User equipment for a communication network, the user equipment being adapted to associate a data packet with a packet bearer being adapted to transmit the data packet to a communication entity in the communication network, wherein the communication network comprises at least one control entity adapted to initiate an exchange of signaling information with the user equipment, the user equipment comprising an executing unit for executing one or more applications which create the data packet;

• a transmission unit for establishing the packet bearer with the communication entity and sending the data packet on the packet bearer;
• a first receiving unit for receiving a first signaling of filter parameters for defining a packet filter, the filter parameters corresponding to a packet marking;
• a second receiving unit for receiving a second signaling of the packet marking from the control entity;
• a packet marking entity adapted to receive the signaled packet marking from the second receiving unit and for marking at least one control field in the data packet with the signaled packet marking;
• a packet filter corresponding to the filter parameters, the packet filter being adapted to scan data packets forwarded from the executing unit to the transmission unit, wherein the packet filter is associated with the packet bearer and to forward the data packet with the marking corresponding to the filter parameters on the associated packet bearer.