A circuit and a method for operating a node in a radio network, whereby nodes of the same radio network have a common network ID and each node individually is assigned a node ID, wherein during the reception of a current packet by a receiving circuit of the node, an address contained in the packet is determined, wherein reception of the current packet is continued when the determined address agrees with the network ID of the node and the node ID of the node, and wherein during reception of the current packet, the reception of the current packet is terminated and the receiving circuit is controlled based on a case decision, when the determined address does not agree with the network ID of the node or the node ID of the node.