Abstract: A device for user datagram protocol packet processing on network elements in a network, a radio access network comprising such a device and a method for user datagram protocol packet processing on network elements in a network, wherein a predetermined limited range of user datagram protocol port numbers is provided. It is determined, when a user datagram protocol packet arrives, whether a user datagram protocol port number associated with the user datagram protocol packet falls within the limited range of a user datagram protocol port numbers, and a mapping table is searched, if the associated user datagram protocol port number falls within the limited range of user datagram protocol port numbers, or the user datagram protocol packet is discarded or forwarded to an internet protocol means for further processing, if the associated user datagram protocol port number does not fall within the limited range of user datagram protocol numbers.

Abstract: A transmitter and other features of a communication system include means for determining power of a signal to be pre-distorted for quantizing the power in a predetermined way and for selecting a corresponding power interval. The transmitter and other features also include means for deriving parameters defining a linear curve segment of the selected power interval are disclosed. The transmitter and other features also include means for calculating a gain factor by using the parameters defining the linear curve segment of the selected power interval and means for obtaining a pre-distorted signal.