A method and system are provided for monitoring adjacent cells in a mobile radio
telephone system, in which a mobile station located in a cell of a mobile radio
telephone system receives, for purposes of monitoring adjacent cells, transmits
signals coded with different cell-specific codes from base stations of adjacent
cells and codes and evaluates these in accordance with the respective cell-specific
codes, wherein at least the base station currently responsible for the mobile station
transmits a signaling information item which informs the mobile station of the
codes to be used in the monitoring of adjacent cells and/or of the codes not to
be used in monitoring adjacent cells, and the mobile station, in monitoring adjacent
cells, only decodes and evaluates the transmit signals of the adjacent cells coded
with a code which can be used for the monitoring of adjacent cells in accordance
with the signaling information.