{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9781578","patent":{"patent_number":"US-9781578","title":"Space division multiple access for wireless LAN, and channel estimation for the same","assignee":null,"inventors":[],"filing_date":"2017-01-03T00:00:00.000Z","publication_date":"2017-10-03T00:00:00.000Z","cpc_codes":["H04W","H04B","H04L","H04L","H04L","H04L","H04L","H04W","H04W","H04W","H04W"],"num_claims":8,"abstract":"A method of transmitting data in a wireless local access network, the method comprising: transmitting, by an access point, a downlink management frame to a plurality of recipients, the downlink management frame including information about a group address indicating a station group to which the plurality of recipients belongs; transmitting, by the access point, a data frame to the plurality of recipients, the data frame including the group address and a plurality of Aggregate-Medium Access Control (MAC) Protocol Data Units (A-MPDUs) for the plurality of recipients, wherein each of the plurality of A-MPDUs includes at least one MPDU for a corresponding one of the plurality of recipients, and wherein each of the plurality of A-MPDUs further includes zero or more padding bits so that all of the plurality of A-MPDUs have the same transmission time corresponding to a transmission time of a longest A-MPDU among the plurality of A-MPDUs."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Space division multiple access for wireless LAN, and channel estimation for the same","description":"A method of transmitting data in a wireless local access network, the method comprising: transmitting, by an access point, a downlink management frame to a plurality of recipients, the downlink manage","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9781578","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-9781578","citation_suggestion":"Patentable. \"Space division multiple access for wireless LAN, and channel estimation for the same\" (US-9781578). https://patentable.app/patents/US-9781578","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9781578","json":"https://patentable.app/api/llm-context/US-9781578","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T13:17:51.660Z"}