{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9641651","patent":{"patent_number":"US-9641651","title":"Backward compatible L-LTF design for implementation friendly preamble","assignee":null,"inventors":[],"filing_date":"2015-02-25T00:00:00.000Z","publication_date":"2017-05-02T00:00:00.000Z","cpc_codes":["H04L","H04L","H04L","H04L","H04L","H04L","H04L"],"num_claims":20,"abstract":"A backward compatible L-LTF design that can provide control information in addition to channel estimation information in conjunction with Wi-Fi communication techniques. A wireless transmission may be received by a wireless device. The wireless transmission may include a physical layer (PHY) preamble and PHY data. The PHY preamble may include a field that has a training sequence configured for channel estimation and control information. The control information may be determined by the wireless device, and the wireless device may configure reception parameters for the wireless transmission based on the control information."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Backward compatible L-LTF design for implementation friendly preamble","description":"A backward compatible L-LTF design that can provide control information in addition to channel estimation information in conjunction with Wi-Fi communication techniques. A wireless transmission may be","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9641651","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-9641651","citation_suggestion":"Patentable. \"Backward compatible L-LTF design for implementation friendly preamble\" (US-9641651). https://patentable.app/patents/US-9641651","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9641651","json":"https://patentable.app/api/llm-context/US-9641651","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T04:32:13.090Z"}