{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-10505779","patent":{"patent_number":"US-10505779","title":"Method and apparatus for obtaining downlink channel information and network side device","assignee":null,"inventors":[],"filing_date":"2017-07-28T00:00:00.000Z","publication_date":"2019-12-10T00:00:00.000Z","cpc_codes":["H04L","H04B","H04L","H04W","H04B","H04B","H04B"],"num_claims":14,"abstract":"This application provides a method for obtaining downlink channel information. The method includes: performing precoding weighting on M CSI-RSs of each of N sub-cycles, where each sub-cycle is a quantity of measurement pilot subframes for bearing and transmitting the M CSI-RSs; sending the M weighted CSI-RSs to UE; receiving M PMIs and M CQIs that are sent by the UE and that correspond to the M CSI-RSs, where the M PMIs and the M CQIs are obtained by the UE by separately measuring the M weighted CSI-RSs based on a set a rank 1 precoding codebooks corresponding to the predetermined antenna quantity; obtaining M signal-to-noise ratios of a downlink channel of the UE according to the M CQIs; obtaining M equivalent codebooks according to the M PMIs and weights of the precoding weighting; and obtaining a covariance matrix according to the M signal-to-noise ratios and the M equivalent codebooks."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and apparatus for obtaining downlink channel information and network side device","description":"This application provides a method for obtaining downlink channel information. The method includes: performing precoding weighting on M CSI-RSs of each of N sub-cycles, where each sub-cycle is a quant","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-10505779","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-10505779","citation_suggestion":"Patentable. \"Method and apparatus for obtaining downlink channel information and network side device\" (US-10505779). https://patentable.app/patents/US-10505779","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-10505779","json":"https://patentable.app/api/llm-context/US-10505779","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T15:34:17.862Z"}