{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-10505625","patent":{"patent_number":"US-10505625","title":"Method and device for transmitting ACK/NACK in TDD-based wireless communication system","assignee":null,"inventors":[],"filing_date":"2017-12-29T00:00:00.000Z","publication_date":"2019-12-10T00:00:00.000Z","cpc_codes":["H04B","H04L","H04L","H04L","H04L","H04L","H04L","H04L","H04L","H04L","H04L","H04W","H04L","H04L"],"num_claims":12,"abstract":"A method of transmitting an acknowledgement (ACK) or a negative-acknowledgement (NACK) in a wireless communication system based on Time Division Duplex (TDD) in which M downlink sub-frame(s) are associated with an uplink sub-frame, where M is equal to or greater than one (1), the method includes receiving, by a user equipment configured with a plurality of serving cells, at least one downlink block in the M downlink sub-frame(s); determining, by the user equipment, an ACK/NACK response for the at least one downlink block by using one of a plurality of mapping rules, wherein each of the plurality of mapping rules determines the ACK/NACK response based on M, wherein when an uplink grant comprising a downlink assignment index (DAI) field indicating a pre-determined index value is received by the user equipment, M is replaced by the pre-determined index value of the DAI field for determining the ACK/NACK response."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and device for transmitting ACK/NACK in TDD-based wireless communication system","description":"A method of transmitting an acknowledgement (ACK) or a negative-acknowledgement (NACK) in a wireless communication system based on Time Division Duplex (TDD) in which M downlink sub-frame(s) are assoc","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-10505625","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-10505625","citation_suggestion":"Patentable. \"Method and device for transmitting ACK/NACK in TDD-based wireless communication system\" (US-10505625). https://patentable.app/patents/US-10505625","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-10505625","json":"https://patentable.app/api/llm-context/US-10505625","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T05:56:21.552Z"}