{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9680621","patent":{"patent_number":"US-9680621","title":"MU-MIMO acknowledgement protocol efficiency","assignee":null,"inventors":[],"filing_date":"2014-04-08T00:00:00.000Z","publication_date":"2017-06-13T00:00:00.000Z","cpc_codes":["H04L","H04B","H04B","H04B","H04L","H04L","H04L"],"num_claims":20,"abstract":"A method for improving multiple-user (MU) multiple-input-multiple-output (MIMO) acknowledge (ACK) protocol efficiency includes: receiving a sounding frame from a device, sending a feedback response, which includes quantized channel state information (CSI) to the device, receiving an MU physical-layer protocol data unit (PPDU) frame from the device, and in response to receiving the MU PPDU frame, sending an ACK frame to the device without receiving a polling frame prior to the ACK frame."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"MU-MIMO acknowledgement protocol efficiency","description":"A method for improving multiple-user (MU) multiple-input-multiple-output (MIMO) acknowledge (ACK) protocol efficiency includes: receiving a sounding frame from a device, sending a feedback response, w","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9680621","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-9680621","citation_suggestion":"Patentable. \"MU-MIMO acknowledgement protocol efficiency\" (US-9680621). https://patentable.app/patents/US-9680621","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9680621","json":"https://patentable.app/api/llm-context/US-9680621","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T09:41:10.115Z"}