{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9673880","patent":{"patent_number":"US-9673880","title":"Pilot signal transmission method, channel estimation method, and apparatus and system","assignee":null,"inventors":[],"filing_date":"2014-06-02T00:00:00.000Z","publication_date":"2017-06-06T00:00:00.000Z","cpc_codes":["H04B","H04B","H04B","H04L","H04L","H04L","H04W","H04B","H04L"],"num_claims":19,"abstract":"A pilot signal transmission method, a channel estimation method, and an apparatus are provided, and the method for a pilot signal transmission includes: transmitting a pilot signal 1 CPICH1 over a first antenna, and transmitting a pilot signal 2 CPICH2 over a second antenna; transmitting a pilot signal CPICHk1 over a k1th antenna; and when it is determined that a terminal of a first category in the MIMO system is scheduled, transmitting a pilot signal CPICHk2 over the k1th antenna. Interference caused by a pilot signal to a traditional terminal is better reduced, performance of the traditional terminal is ensured while the terminal of the first category properly works in the MIMO system, and power consumption for transmitting a pilot signal is effectively reduced."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Pilot signal transmission method, channel estimation method, and apparatus and system","description":"A pilot signal transmission method, a channel estimation method, and an apparatus are provided, and the method for a pilot signal transmission includes: transmitting a pilot signal 1 CPICH1 over a fir","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9673880","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-9673880","citation_suggestion":"Patentable. \"Pilot signal transmission method, channel estimation method, and apparatus and system\" (US-9673880). https://patentable.app/patents/US-9673880","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9673880","json":"https://patentable.app/api/llm-context/US-9673880","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T07:21:14.870Z"}