{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8521193","patent":{"patent_number":"US-8521193","title":"Energy-efficient positioning system for smartphone using cell-id sequence matching","assignee":null,"inventors":[],"filing_date":"2011-11-11T00:00:00.000Z","publication_date":"2013-08-27T00:00:00.000Z","cpc_codes":["G01S","G01C","H04W"],"num_claims":8,"abstract":"A method for navigation based on a cellid-aided positioning system includes: determining, at a cellid-aided positioning system-compatible device, that a user has moved through a sequence of cellids, wherein moving through a sequence of cellids comprises moving from a first region corresponding to a first cellid to a second region corresponding to a second cellid; accessing previously stored route information corresponding to the sequence of cellids, wherein the previously stored route information includes previously recorded sequences of cellids and global positioning system (GPS) information; estimating a current position of the user based on the previously stored route information; and displaying the current position of the user."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Energy-efficient positioning system for smartphone using cell-id sequence matching","description":"A method for navigation based on a cellid-aided positioning system includes: determining, at a cellid-aided positioning system-compatible device, that a user has moved through a sequence of cellids, w","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8521193","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-8521193","citation_suggestion":"Patentable. \"Energy-efficient positioning system for smartphone using cell-id sequence matching\" (US-8521193). https://patentable.app/patents/US-8521193","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8521193","json":"https://patentable.app/api/llm-context/US-8521193","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T19:52:20.393Z"}