{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9692554","patent":{"patent_number":"US-9692554","title":"Power line communication operating frequency band selection apparatus, systems and methods","assignee":null,"inventors":[],"filing_date":"2015-10-16T00:00:00.000Z","publication_date":"2017-06-27T00:00:00.000Z","cpc_codes":["H04B","H04L","H04L","H04L","H04L"],"num_claims":20,"abstract":"A band of interest is divided into band segments. A scan frame is sent by a transmitter at a transmitting PLC node across each band segment. A receiver at a receiving node scans the band segments, listening for the scan frame. Upon detecting a scan frame, the receiving node measures the signal quality of each OFDM subcarrier modulated with symbols from the scan frame. The subcarrier signal quality values are stored in a table. Upon completion of the scan process, the table contains a signal quality value for each subcarrier within the band of interest. The table is then analyzed to find an operating band consisting of subcarriers with a highest average signal quality or a band that results in greater than a pre-determined minimum signal quality. The invented methods and embodiments may operate periodically to readjust the operating band configuration in the presence of electromagnetic interference including time-variant interference."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Power line communication operating frequency band selection apparatus, systems and methods","description":"A band of interest is divided into band segments. A scan frame is sent by a transmitter at a transmitting PLC node across each band segment. A receiver at a receiving node scans the band segments, lis","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9692554","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-9692554","citation_suggestion":"Patentable. \"Power line communication operating frequency band selection apparatus, systems and methods\" (US-9692554). https://patentable.app/patents/US-9692554","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9692554","json":"https://patentable.app/api/llm-context/US-9692554","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T15:06:11.969Z"}