Patent ID: 6405020
Filing Date: 2002-06-11
Classification: H04L

Abstract:
A method for voice transmission via a radio interface in a digital radio communication system including a base station connected to a base station controller, and a radio station located in a radio coverage area of the base station, the method comprising:transmitting a signal via a radio interface between a radio station and a base station; determining, from the signal, an initial characteristic value relating to transmission conditions of the radio interface; storing the characteristic value in a storage device for providing a stored characteristic value; performing, with a voice and channel codec, a voice and channel coding at a transmitter side for a voice transmission; controlling the voice and channel coding at the transmitter side by taking into account a currently determined characteristic value and the initially determined stored characteristic value; determining further characteristic values relating to the transmission conditions between the base station and further radio stations located in the radio coverage area of the base station; storing the further characteristic values in the storage device for providing stored further characteristic values; and taking into account the initially determined stored further characteristic values and currently determined further characteristic values for controlling the voice and channel coding at the transmitter side for the voice transmission between the base station and the radio station.