A network node for a lighting network, the node is at least one of: a light sensor; a motion sensor; lighting means; a control device; or an operating device for the lighting means; and includes means for measuring the signal quality or signal strength of the wireless connection to all wirelessly connected further nodes, storage means configured to store connection information e.g. based on the signal quality or signal strength together with an identifier for the associated wirelessly connected further node(s), and means for wirelessly forwarding the connection information to another node, wherein the network node is configured to receive at least one test pattern and/or to re-send the test pattern, the test pattern including the network node's identifier, e.g. the MAC address.