| 主权项 |
1. A device for identifying a location of noise in a network, the device comprising:
an acquiring unit connected to the network, the network being a tree-like structure having an upper-level device at a highest level of the network, one or more second devices at one or more middle levels of the network, the one or more second devices including two or more second devices at a same middle level, and a plurality of first devices at a lowest level of the network, the acquiring unit to acquire amplitude fluctuations in signals transmitted from the first devices via at least one second device to the upper-level device; and a detecting unit to:
detect a noise-generating device that is transmitting signals containing noise on the basis of the amplitude fluctuations in signals acquired by the acquiring unit,detect whether the noise-generating device is downstream from a particular one of the second devices,determine a non-event probability for each of the first devices, the non-event probability being a probability of an absence of noise being generated by a first device,determine an event probability for each of the two or more second devices at the same middle level, the event probability being a probability of noise being included in signals transmitted from a second device, wherein an event probability for a particular second device is determined as a product of non-event probabilities of all of the first devices connected to the particular second device, anddetect a particular second device of the two or more second devices at the same middle level as a noise-generating device when the particular second device has a highest event probability of the two or more second devices at the same level. |
