{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9668283","patent":{"patent_number":"US-9668283","title":"Collision detection and backoff window adaptation for multiuser MIMO transmission","assignee":null,"inventors":[],"filing_date":"2011-04-29T00:00:00.000Z","publication_date":"2017-05-30T00:00:00.000Z","cpc_codes":["H04W","H04B","H04L","H04W","H04L","H04W"],"num_claims":50,"abstract":"Certain aspects of the present disclosure generally apply to a wireless local area network (WLAN) where an access point (AP) has data to send to multiple stations (STAs). By using the Downlink Spatial Division Multiple Access (DL-SDMA) technique, the AP may send data at the same time towards multiple STAs. Certain aspects of the present disclosure provide techniques and apparatuses for detecting that a multiuser multiple-input multiple-output (MU-MIMO) transmission has suffered a collision and to adapting a contention window (CW) size for a backoff counter applied to a subsequent MU-MIMO transmission."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Collision detection and backoff window adaptation for multiuser MIMO transmission","description":"Certain aspects of the present disclosure generally apply to a wireless local area network (WLAN) where an access point (AP) has data to send to multiple stations (STAs). By using the Downlink Spatial","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9668283","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-9668283","citation_suggestion":"Patentable. \"Collision detection and backoff window adaptation for multiuser MIMO transmission\" (US-9668283). https://patentable.app/patents/US-9668283","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9668283","json":"https://patentable.app/api/llm-context/US-9668283","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T13:34:49.001Z"}