{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9806784","patent":{"patent_number":"US-9806784","title":"Sub-band feedback for beamforming on downlink multiple user MIMO configurations","assignee":null,"inventors":[],"filing_date":"2016-01-28T00:00:00.000Z","publication_date":"2017-10-31T00:00:00.000Z","cpc_codes":["H04B","H04B","H04B","H04L","H04L","H04L","H04L","H04W"],"num_claims":22,"abstract":"A method in a communication network includes an access point, using a multiple input multiple output antenna configuration, sending out a sounding packet to a plurality of client stations. The client stations determine a channel estimation of the sounding packet, but only a channel estimation of a portion of the entire sounding packet to avoid processing the entire packet. The resulting partial estimation is sent to the access point for using in transmit beamforming. In other examples, the client station sends a reverse link sounding packet over a portion a channel having a bandwidth less than the sounding packet, and from this the access point determines partial channel estimations and transmit beamforming conditions."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Sub-band feedback for beamforming on downlink multiple user MIMO configurations","description":"A method in a communication network includes an access point, using a multiple input multiple output antenna configuration, sending out a sounding packet to a plurality of client stations. The client ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9806784","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-9806784","citation_suggestion":"Patentable. \"Sub-band feedback for beamforming on downlink multiple user MIMO configurations\" (US-9806784). https://patentable.app/patents/US-9806784","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9806784","json":"https://patentable.app/api/llm-context/US-9806784","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T14:50:50.695Z"}