There is provided a method of data over a radio interface in a radio communication network based on a protocol layers model, the model comprising an IP layer on which IP packets are handled, wherein before the transmission of a determined IP packet, the method comprises: determining whether the IP packet is compressible under a predetermined condition and. if the IP packet is compressible under the predetermined condition, performing a compression of the IP packet. There are also provided a user equipment (UE) and a node adapted to perform the steps of a method according to the invention.