{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9642144","patent":{"patent_number":"US-9642144","title":"Method for transmitting and receiving data unit based on uplink multiple user multiple input multiple output transmission and apparatus for the same","assignee":null,"inventors":[],"filing_date":"2015-11-19T00:00:00.000Z","publication_date":"2017-05-02T00:00:00.000Z","cpc_codes":["H04L","H04B","H04B","H04B","H04L","H04W","H04W","H04L"],"num_claims":8,"abstract":"In an aspect, a method of receiving a data unit, performed by an Access Point (AP), in a Wireless LAN (WLAN) system is provided. The method includes transmitting a signal protection frame, the signal protection frame comprising a group ID field indicating a Multiple Input Multiple Output (MIMO) transmission STA group including a first station (STA) and a second STA; and, a spatial stream field indicating a number of spatial streams allocated to each of member STAs included in the MIMO transmission STA group; receiving a first preamble for a first data unit from the first STA; receiving a second preamble for a second data unit from the second STA; and simultaneously receiving the first data unit from the first STA and the second data unit from the second STA."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method for transmitting and receiving data unit based on uplink multiple user multiple input multiple output transmission and apparatus for the same","description":"In an aspect, a method of receiving a data unit, performed by an Access Point (AP), in a Wireless LAN (WLAN) system is provided. The method includes transmitting a signal protection frame, the signal ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9642144","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-9642144","citation_suggestion":"Patentable. \"Method for transmitting and receiving data unit based on uplink multiple user multiple input multiple output transmission and apparatus for the same\" (US-9642144). https://patentable.app/patents/US-9642144","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9642144","json":"https://patentable.app/api/llm-context/US-9642144","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T10:15:34.121Z"}