Abstract: The invention relates to a device, system and method a method for applying a certain Quality of Service (QoS) to a data stream (31a–31c, 32a–32b, 33a) of an application (31–33) communicating data over a sockets connection. The method comprises providing a uniquely identifiable identifier (UID, Stream Type) the application (31–33) or to the data stream (31a–31c, 32a–32b, 33a) from or to the application, and associating said identifier (UID, Stream Type) with a particular QoS in order to apply the particular QoS to the particular application (31–33) or to the particular data stream (31a–31c, 32a–32b, 33a), which application or data stream is identified by the identifier.

Abstract: A method to control the PDP context of a data packet and a mobile station to realise the method. The mobile station comprises a control element, which controls the classification of a data packet to be sent to a PDP context on basis of a first and a second identifier. The first identifier indicates the application that has created the data packet and the second identifier indicates a separate data flow of the application. The classification process is simplified and thus better suited to a mobile station with limited performance capacity.

Abstract: The invention relates to a device, system and method a method for applying a certain Quality of Service (QoS) to a data stream (31a-31c, 32a-32b, 33a) of an application (31-33) communicating data over a sockets connection. The method comprises providing a uniquely identifiable identifier (UID, Stream Type) the application (31-33) or to the data stream (31a-31c, 32a-32b, 33a) from or to the application, and associating said identifier (UID, Stream Type) with a particular QoS in order to apply the particular QoS to the particular application (31-33) or to the particular data stream (31a-31c, 32a-32b, 33a), which application or data stream is identified by the identifier.