US Patent 11398967 Leakage detection on hybrid fiber-coaxial (HFC) access networks

A method for signal leakage detection includes initializing a leakage probe by providing information about a tone to a plurality of nodes of a network, instructing a first modem connected to a first one of the nodes to generate the tone, instructing a set of the nodes to listen for the tone outside of the network according to the information about the tone, receiving, from the set of nodes, information about a plurality of detections of the tone outside of the network associated with a leakage of the tone from the network, and determining a location of the leakage of the tone from the network using the information about the detections of the tone.