{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9661625","patent":{"patent_number":"US-9661625","title":"Method and apparatus for transreceiving downlink signal by considering antenna port relationship in wireless communication system","assignee":null,"inventors":[],"filing_date":"2013-10-04T00:00:00.000Z","publication_date":"2017-05-23T00:00:00.000Z","cpc_codes":["H04W","H04B","H04B","H04B","H04B","H04L","H04L","H04L","H04L","H04L","H04L","H04L","H04L","H04W","H04W","H04W","H04W","H04L","H04L","H04L","H04L","H04W","H04W"],"num_claims":16,"abstract":"The present invention relates to a wireless communication system, and more specifically, disclosed are a method and an apparatus for transmitting or receiving a downlink signal by considering an antenna port relationship. A method for user equipment receiving a physical downlink shared channel (PDSCH) signal in the wireless communication system, according to one embodiment of the present invention, comprises the steps of: determining a start symbol index of the PDSCH from the downlink subframe; and receiving the PDSCH signal based on the start symbol index. When the DCI is comprised according to DCI format 1A, and the downlink subframe is a multicast broadcast single frequency network (MBSFN) subframe, the start symbol index can be determined depending on a PDSCH start symbol value which is included in a PDSCH resource element mapping and Quasi co-location indicator (PQI) that is established by an upper layer."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and apparatus for transreceiving downlink signal by considering antenna port relationship in wireless communication system","description":"The present invention relates to a wireless communication system, and more specifically, disclosed are a method and an apparatus for transmitting or receiving a downlink signal by considering an anten","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9661625","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-9661625","citation_suggestion":"Patentable. \"Method and apparatus for transreceiving downlink signal by considering antenna port relationship in wireless communication system\" (US-9661625). https://patentable.app/patents/US-9661625","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9661625","json":"https://patentable.app/api/llm-context/US-9661625","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T05:50:44.769Z"}