{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9712303","patent":{"patent_number":"US-9712303","title":"Grouping based reference signal transmission for massive MIMO scheme","assignee":null,"inventors":[],"filing_date":"2014-02-21T00:00:00.000Z","publication_date":"2017-07-18T00:00:00.000Z","cpc_codes":["H04L","H04B","H04L","H04L","H04L","H04W","H04L","H04L"],"num_claims":14,"abstract":"A reference signal transmission scheme is presented. A first user equipment (UE) receives first information identifying which uplink subframe of a plurality of subframes is enabled to transmit an uplink reference signal, and receives second information identifying a sequence used for the uplink reference signal from a base station. The first information is used to identify a different uplink subframe to a first UE group including the first UE and a second UE group other than the first UE group. The second information is determined to assign different orthogonal sequences to each of UEs of the first UE group. The first UE transmits the uplink reference signal to the base station at the uplink subframe identified by the first information using the sequence identified by the second information."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Grouping based reference signal transmission for massive MIMO scheme","description":"A reference signal transmission scheme is presented. A first user equipment (UE) receives first information identifying which uplink subframe of a plurality of subframes is enabled to transmit an upli","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9712303","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-9712303","citation_suggestion":"Patentable. \"Grouping based reference signal transmission for massive MIMO scheme\" (US-9712303). https://patentable.app/patents/US-9712303","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9712303","json":"https://patentable.app/api/llm-context/US-9712303","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T09:22:59.327Z"}