{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9749107","patent":{"patent_number":"US-9749107","title":"Method and base station for transmitting downstream link data, and method and user device for receiving downstream link data","assignee":null,"inventors":[],"filing_date":"2016-09-19T00:00:00.000Z","publication_date":"2017-08-29T00:00:00.000Z","cpc_codes":["H04L","H04J","H04J","H04J","H04L","H04L","H04L","H04L","H04L","H04L","H04L","H04W","H04B","H04J","H04J","H04L","H04W","H04W"],"num_claims":16,"abstract":"The present invention relates to a method and apparatus which transmit/receive at least one demodulation reference signal by using a CDM group and/or a transmission rank of a user device that have been used to transmit the at least one demodulation reference signal for the user device, an OCC that has been used to spread the demodulation reference signal, etc. Also, the present invention relates to a method and apparatus which change an antenna port for transmitting the demodulation reference signal by using NDI for a disabled transmission block."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and base station for transmitting downstream link data, and method and user device for receiving downstream link data","description":"The present invention relates to a method and apparatus which transmit/receive at least one demodulation reference signal by using a CDM group and/or a transmission rank of a user device that have bee","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9749107","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-9749107","citation_suggestion":"Patentable. \"Method and base station for transmitting downstream link data, and method and user device for receiving downstream link data\" (US-9749107). https://patentable.app/patents/US-9749107","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9749107","json":"https://patentable.app/api/llm-context/US-9749107","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T04:10:46.122Z"}