{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9642120","patent":{"patent_number":"US-9642120","title":"Transmission method and apparatus in a wireless communication system in which a cell includes a plurality of subcells","assignee":null,"inventors":[],"filing_date":"2013-05-31T00:00:00.000Z","publication_date":"2017-05-02T00:00:00.000Z","cpc_codes":["H04W","H04B","H04B","H04L","H04L","H04L","H04L","H04L","H04W"],"num_claims":20,"abstract":"A transmission method and apparatus are provided for use in a wireless communication system in which a cell includes a plurality of sub-cells. A Transmission Point (TP) in the wireless communication system includes a transmitter configured to transmit a signal to each of the plurality of sub-cells through a plurality of antennas; a receiver configured to receive uplink control information from a User Equipment (UE) located within at least one of the plurality of sub-cells; and a controller configured to determine a virtual matrix for each of the plurality of sub-cells, to select a precoding matrix according to the virtual matrices of the plurality of sub-cells, to determine a cooperative transmission mode or a normal transmission mode, based on the received uplink control information, and to control the transmitter to perform downlink transmission on a sub-cell basis through the virtual matrices of the sub-cells according to the determined transmission mode."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Transmission method and apparatus in a wireless communication system in which a cell includes a plurality of subcells","description":"A transmission method and apparatus are provided for use in a wireless communication system in which a cell includes a plurality of sub-cells. A Transmission Point (TP) in the wireless communication s","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9642120","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-9642120","citation_suggestion":"Patentable. \"Transmission method and apparatus in a wireless communication system in which a cell includes a plurality of subcells\" (US-9642120). https://patentable.app/patents/US-9642120","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9642120","json":"https://patentable.app/api/llm-context/US-9642120","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T07:28:11.301Z"}