{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8477867","patent":{"patent_number":"US-8477867","title":"Method and apparatus for cooperative MIMO transmission operation in multicell wireless network","assignee":null,"inventors":[],"filing_date":"2009-09-03T00:00:00.000Z","publication_date":"2013-07-02T00:00:00.000Z","cpc_codes":["H04B","H04B","H04B"],"num_claims":7,"abstract":"A method and apparatus of configuring a multi-cell precoding matrix for a multiple input multiple output (MIMO) operation in a wireless communication system in which a plurality of base stations participate in cooperative communication is provided. A multi-cell precoding matrix is configured using one or more single-cell precoding matrices, and wherein coefficients to be multiplied by the single-cell precoding matrices satisfy a condition in which the product between the multi-cell precoding matrix and a Hermitian matrix of the multi-cell precoding matrix is a unitary matrix. According to the embodiment of the present invention, it is not necessary for all base stations to perfectly know channel information. In addition, a feedback overhead is not high, and complexity is low."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and apparatus for cooperative MIMO transmission operation in multicell wireless network","description":"A method and apparatus of configuring a multi-cell precoding matrix for a multiple input multiple output (MIMO) operation in a wireless communication system in which a plurality of base stations parti","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8477867","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-8477867","citation_suggestion":"Patentable. \"Method and apparatus for cooperative MIMO transmission operation in multicell wireless network\" (US-8477867). https://patentable.app/patents/US-8477867","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8477867","json":"https://patentable.app/api/llm-context/US-8477867","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T07:46:31.151Z"}