{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9806869","patent":{"patent_number":"US-9806869","title":"Apparatus and method for transitting channel quality indicator and acknowledgement signals in SC-FDMA communication systems","assignee":null,"inventors":[],"filing_date":"2016-11-21T00:00:00.000Z","publication_date":"2017-10-31T00:00:00.000Z","cpc_codes":["H04L","H04J","H04L","H04L","H04L","H04L","H04W","H04W"],"num_claims":20,"abstract":"A method and apparatus are provided for transmitting one or more positive or negative acknowledgement (ACK/NACK) bits in response to data reception in a single-carrier frequency division multiple access (SC-FDMA) communication system. The method includes, if the one or more ACK/NACK bits are one bit, applying a first code to a first symbol, if the acknowledgement bit is NACK, and applying a second code to the first symbol, if the acknowledgement bit is ACK; if the one or more ACK/NACK bits are two bits, applying quadrature phase shift keying (QPSK) modulation to the first symbol based on a value of the two ACK/NACK bits; if no ACK/NACK bit exists, applying the first code to the first symbol; and transmitting the first symbol and a second symbol in a slot."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Apparatus and method for transitting channel quality indicator and acknowledgement signals in SC-FDMA communication systems","description":"A method and apparatus are provided for transmitting one or more positive or negative acknowledgement (ACK/NACK) bits in response to data reception in a single-carrier frequency division multiple acce","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9806869","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-9806869","citation_suggestion":"Patentable. \"Apparatus and method for transitting channel quality indicator and acknowledgement signals in SC-FDMA communication systems\" (US-9806869). https://patentable.app/patents/US-9806869","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9806869","json":"https://patentable.app/api/llm-context/US-9806869","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T05:18:01.518Z"}