A method of signalling system information and a method of receiving system information are provided. The method of signalling system information includes broadcasting a piece of system information in a radio cell, the piece of system information indicating that a first portion of a frequency spectrum, the frequency spectrum being available for the radio cell, is assigned to a first radio mode, the piece of system information further indicating that a second portion of the frequency spectrum is assigned to a second radio mode, the second radio mode being different from the first radio mode. A radio base station is configured to perform the method of signalling system information. A radio communication terminal is configured to receive the broadcasted piece of system information.