{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8503368","patent":{"patent_number":"US-8503368","title":"Macro-network location determination, local-oscillator stabilization, and frame-start synchronization based on nearby FM radio signals","assignee":null,"inventors":[],"filing_date":"2011-02-08T00:00:00.000Z","publication_date":"2013-08-06T00:00:00.000Z","cpc_codes":["H04W","G01S","G01S","G01S","H04B","H04W","H04W","H04W"],"num_claims":17,"abstract":"Exemplary methods and systems may generally be implemented to allow a macro-network base station without access to a GPS reference signal to provide some or all of the functionality for which existing macro-network base stations typically rely on GPS. In a first aspect, an exemplary macro-network base station may determine its location using a location-determination technique that is based upon the angles of arrival of FM radio signals from nearby FM stations. In a second aspect, an exemplary macro-network base station may stabilize its local oscillator by phase-locking its local oscillator to an FM radio signal, and periodically adjusting its local oscillator to account for phase drift of the FM radio signal. And in a third aspect, an exemplary macro-network base station may synchronize its frame-start timing with a nearby base station using a frame-start timing signal that the base station has synchronized to frame transmissions from the nearby base station during a setup routine."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Macro-network location determination, local-oscillator stabilization, and frame-start synchronization based on nearby FM radio signals","description":"Exemplary methods and systems may generally be implemented to allow a macro-network base station without access to a GPS reference signal to provide some or all of the functionality for which existing","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8503368","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-8503368","citation_suggestion":"Patentable. \"Macro-network location determination, local-oscillator stabilization, and frame-start synchronization based on nearby FM radio signals\" (US-8503368). https://patentable.app/patents/US-8503368","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8503368","json":"https://patentable.app/api/llm-context/US-8503368","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T15:36:43.106Z"}