{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9705575","patent":{"patent_number":"US-9705575","title":"Advanced feedback and reference signal transmissions for MIMO wireless communication systems","assignee":null,"inventors":[],"filing_date":"2016-04-12T00:00:00.000Z","publication_date":"2017-07-11T00:00:00.000Z","cpc_codes":["H04B","H04B","H04B","H04B","H04B","H04B"],"num_claims":20,"abstract":"A user equipment (UE) capable of communicating with a base station includes a transceiver configured to receive a signal comprising a CSI process configuration, wherein the CSI process configuration comprises a plurality of CSI-RS resource configurations to identify CSI-RS resources, and a controller configured to derive a first PMI index, i11 utilizing a first non-precoded CSI-RS on a first non-precoded CSI-RS resource, derive a second PMI index, i12 utilizing a second non-precoded CSI-RS on a second non-precoded CSI-RS resource, derive a third PMI index, i2 utilizing a beamformed CSI-RS on a beamformed CSI-RS resource, and cause the transceiver to transmit a CSI feedback comprising the three PMI indices i11, i12 and i2 to the base station. A base station capable of communicating with UE a transmitter configured to transmit a signal comprising a CSI process configuration, wherein the CSI process configuration comprises a plurality of CSI-RS resource configurations."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Advanced feedback and reference signal transmissions for MIMO wireless communication systems","description":"A user equipment (UE) capable of communicating with a base station includes a transceiver configured to receive a signal comprising a CSI process configuration, wherein the CSI process configuration c","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9705575","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-9705575","citation_suggestion":"Patentable. \"Advanced feedback and reference signal transmissions for MIMO wireless communication systems\" (US-9705575). https://patentable.app/patents/US-9705575","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9705575","json":"https://patentable.app/api/llm-context/US-9705575","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T06:36:00.000Z"}