Abstract: The present invention relates to automatic update of a neighbour relation table of a base station. In particular, the present invention relates to a method, a computer program product, and a user terminal for automatically updating a neighbour relation table of a base station, and to a base station and a radio communication system. The base station (2) broadcasts a broadcast message to user terminals (4) served by said base station (2). An instruction for switching user terminals in idle mode to a not idle mode is inserted into the broadcast message. User terminals in idle mode receiving said broadcast message from their serving base station are able to extract said instruction from the broadcast message.