# US 2014/0153624 A1 · Noise ingress detection > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0153624 A1 - Document ID: US20140153624A1 - Status: Published application - Kind: A1 - Application number: 13/692,499 - Filed: 2012-12-03 - Published: 2014-06-05 - Earliest claimed: 2012-12-03 - Assignees: Comcast Cable Communications, LLC - Applicants: Comcast Cable Communications, LLC - Inventors: Lawrence Wolcott; Phillip Chang - Web page: https://patentgrep.com/patent/US20140153624A1 ## CPC - H04B 15/00: Suppression or limitation of noise or interference (by means associated with receiver H04B1/10) - H04L 12/2801: {Broadband local area networks} - H04B: TRANSMISSION - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract Methods and systems are provided for detection of noise ingress into a network. In an aspect, multiple access devices on the network are analyzed for noise ingress. In another aspect, using characterization data of components in the network and the detection of the noise at the access devices, the location of the noise ingress can be determined. ## Claims ### Claim 1 A method comprising: detecting a level of noise received at each of a plurality of devices connected to a network; determining, attenuation of a noise source received at each of the access devices for multiple possible locations of noise ingress in the network; and identifying, one of the multiple possible locations as a location where ingress of the noise source occurred based on the detected level of noise received at each of the plurality of devices and the determined attenuation of the noise source received at each of the plurality of devices for the multiple possible locations. ### Claim 2 (depends on 1) The method of claim 1, further comprising: detecting changes in network characterization data received from each of the plurality of devices, wherein the detecting of the level of noise is based on the detected changes, and wherein the network characterization data includes post-equalization filter coefficients for each of the plurality of devices. ### Claim 3 (depends on 1) The method of claim 1, further comprising: detecting changes in network characterization data received from each of the plurality of devices, wherein the detecting of the level of noise is based on the detected changes, and wherein the network characterization data includes frequency spectrum data of signals received by each of the plurality of devices. ### Claim 4 (depends on 1) The method of claim 1, wherein the multiple possible locations include a range of locations along the network. ### Claim 5 (depends on 1) The method of claim 1, wherein the multiple possible locations include geospatial locations of physical network components. ### Claim 6 (depends on 5) The method of claim 5, further comprising: displaying the identified location on a map that illustrates the geospatial locations of physical network components. ### Claim 7 (depends on 2) The method of claim 2, further comprising: receiving multiple iterations of the network characterization data from each of the plurality of devices over respective multiple iterations of time; detecting, for each of the plurality of devices, a difference between two of the iterations of the network characterization data; and comparing, for each of the plurality of devices, the detected difference to a predetermined threshold, wherein the detecting of changes in network characterization data received from each of the plurality of devices is based on the detected difference exceeding the predetermined threshold. ### Claim 8 (depends on 1) The method of claim 1, further comprising: identifying interconnection of network components in the network; identifying signal paths from the multiple possible locations of noise ingress to each of the plurality of devices based on the identified interconnection; retrieving signaling characteristics of one or more of the network components; and associating the retrieved signaling characteristics of the one or more network components to the identified signaling paths, wherein the determining of the attenuation of the noise source at each of the devices for multiple possible locations of noise ingress in the network is based on the associating. ### Claim 9 A method comprising: receiving multiple iterations of network characterization data, over respective multiple iterations of time, from each of a plurality of devices connected to a network; detecting, for each of the plurality of devices, a difference between two of the iterations of the network characterization data; and identifying a location of ingress into the network of a noise source based on the detected differences for each of the plurality of devices and based on locations of the devices in the network. ### Claim 10 (depends on 9) The method of claim 9, further comprising: detecting a level of noise received at each of a plurality of devices connected to the network based on the detected difference between the two iterations of the network characterization data; determining attenuation of the noise source at each of the devices for multiple possible locations of noise ingress in the network; and identifying the location of ingress from among one of the multiple possible locations based on the detected level of noise received and the determined attenuation of the noise source received at each of the plurality of devices. ### Claim 11 (depends on 10) The method of claim 10, wherein the multiple possible locations include a range of locations along the network. ### Claim 12 (depends on 10) The method of claim 10, wherein the multiple possible locations include geospatial locations of physical network components. ### Claim 13 (depends on 12) The method of claim 12, further comprising: displaying the identified location on a map that illustrates the geospatial locations of physical network components. ### Claim 14 (depends on 10) The method of claim 10, further comprising: identifying interconnection of network components in the network; identifying signal paths from the multiple possible locations of noise ingress to each of the plurality of devices based on the identified interconnection; retrieving signaling characteristics of one or more of the network components; and associating the retrieved signaling characteristics of the one or more network components to the identified signaling paths, wherein the determining of the attenuation of the noise source at each of the devices for multiple possible locations of noise ingress in the network is based on the associating. ### Claim 15 (depends on 9) The method of claim 9, wherein the network characterization data includes post-equalization filter coefficients for each of the plurality of devices. ### Claim 16 (depends on 9) The method of claim 9, wherein the network characterization data includes frequency spectrum data of signals received by each of the plurality of devices. ### Claim 17 One or more memory storing machine-readable instructions that when executed by one or more processors cause an apparatus to: retrieve signaling characteristics of one or more network components in a network; identify signal paths from multiple possible locations of ingress of a noise source to each of a plurality of devices connected to the network; associate the retrieved signaling characteristics of the one or more network components to the identified signaling paths; and determine attenuation of the noise source at each of the devices for the multiple possible locations of ingress in the network based on the associating; and store in the one or more memory the determined attenuation of the noise source at each of the devices for the multiple possible locations of ingress. ### Claim 18 (depends on 17) The one or more memory of claim 17, wherein the machine-readable instructions, when executed by the one or more processors, further cause the apparatus to: detect a level of noise received at each of the plurality of devices connected to the network; identify one of the multiple possible locations as a location where ingress of the noise source occurred based on the detected level of noise received at each of a plurality of devices and the stored attenuation of the noise source received for each of the plurality of devices for the multiple possible locations of ingress. ### Claim 19 (depends on 18) The one or more memory of claim 18, wherein the machine-readable instructions, when executed by the one or more processors, further cause the apparatus to: receive multiple iterations of network characterization data from each of the plurality of devices over respective multiple iterations of time; detect, for each of the plurality of devices, a difference between two of the iterations of the network characterization data, wherein the detecting of the level of noise received at each of a plurality of devices is based on the detected difference between the two iterations of the network characterization data. ### Claim 20 (depends on 19) The one or more memory of claim 19, wherein the network characterization data includes post-equalization filter coefficients for each of the one or more access devices. ### Claim 21 (depends on 1) The method of claim 1, wherein said plurality of devices is selected from among other devices connected to said network. ### Claim 22 (depends on 9) The method of claim 9, wherein said plurality of devices is selected from among other devices connected to said network. ### Claim 23 (depends on 17) The one or more memory of claim 17, wherein said plurality of devices is selected from among other devices connected to said network.