A method for quantizing signal values of a signal received or to be transmitted via a radio interface including quantizing signal values that lie within a first value range according to a first quantization having a multiplicity of quantization steps wherein the quantization step width between two quantization steps differs from a linear quantization with the same number of quantization steps at most by the step width of the linear quantization with the same number of quantization steps; and quantizing signal values that lie within a second value range according to a second quantization having a multiplicity of quantization steps wherein the quantization step width between two quantization steps is larger than the quantization step width between two quantization steps of the first quantization.