{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9814030","patent":{"patent_number":"US-9814030","title":"Method and apparatus for transmitting or receiving reference signal in wireless communication system","assignee":null,"inventors":[],"filing_date":"2013-09-27T00:00:00.000Z","publication_date":"2017-11-07T00:00:00.000Z","cpc_codes":["H04L","H04B","H04B","H04L","H04L","H04L","H04W","H04W"],"num_claims":11,"abstract":"A method for transmitting a channel state information reference signal (CSI-RS) in a specific downlink subframe having an extended cyclic prefix (CP) in a wireless communication system according to an embodiment of the present invention includes: generating a CSI-RS sequence and mapping the CSI-RS sequence to CSI-RS complex-valued modulation symbols; and mapping the CSI-RS complex-valued modulation symbols to at least one pattern of a first CSI-RS pattern set composed of a plurality of CSI-RS patterns and a second CSI-RS pattern set composed of a plurality of CSI-RS patterns, the CSI-RS patterns being composed of REs to which CSI-RS complex-valued modulation symbols are mapped, wherein the second CSI-RS pattern set is available when 2 OFDM symbols are used for a physical downlink control channel in the downlink subframe or a specific downlink control information format is configured."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and apparatus for transmitting or receiving reference signal in wireless communication system","description":"A method for transmitting a channel state information reference signal (CSI-RS) in a specific downlink subframe having an extended cyclic prefix (CP) in a wireless communication system according to an","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9814030","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-9814030","citation_suggestion":"Patentable. \"Method and apparatus for transmitting or receiving reference signal in wireless communication system\" (US-9814030). https://patentable.app/patents/US-9814030","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9814030","json":"https://patentable.app/api/llm-context/US-9814030","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T07:17:41.504Z"}