{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11490426","patent":{"patent_number":"US-11490426","title":"Two-root preamble design for delay and frequency shift","assignee":null,"inventors":[],"filing_date":"2020-08-13T00:00:00.000Z","publication_date":"2022-11-01T00:00:00.000Z","cpc_codes":["H04L","H04J","H04L","H04L","H04L","H04L","H04L","H04L","H04W","H04J","H04L","H04L","H04L","H04L","H04W"],"num_claims":30,"abstract":"Methods, systems, and devices for wireless communications are described. A user equipment (UE) may communicate with a base station by initiating a random access procedure with a two-root preamble. The UE may receive, from the base station, control signaling that indicates a set of root preamble sequences. The UE may transmit, to the base station, a preamble signal that is generated based on a first root preamble sequence and a second root preamble sequence of the set of root preamble sequences. The UE may then monitor for a preamble response based on the preamble signal. In some cases, the base station may be a base station in a terrestrial network. In other cases, the base station may be a satellite in a non-terrestrial network (NTN)."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Two-root preamble design for delay and frequency shift","description":"Methods, systems, and devices for wireless communications are described. A user equipment (UE) may communicate with a base station by initiating a random access procedure with a two-root preamble. The","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11490426","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-11490426","citation_suggestion":"Patentable. \"Two-root preamble design for delay and frequency shift\" (US-11490426). https://patentable.app/patents/US-11490426","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11490426","json":"https://patentable.app/api/llm-context/US-11490426","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T21:25:18.218Z"}