{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9615279","patent":{"patent_number":"US-9615279","title":"Enhanced listen-before-talk (LBT) for unlicensed band operation with cell splitting","assignee":null,"inventors":[],"filing_date":"2015-06-16T00:00:00.000Z","publication_date":"2017-04-04T00:00:00.000Z","cpc_codes":["H04W","H04W","H04W","H04W","H04W"],"num_claims":25,"abstract":"Techniques of enhanced listen-before-talk (LBT) at an Evolved NodeB (eNB) are discussed. An example apparatus within an eNB implementing such techniques comprises a receiver circuit, processor, and transmitter circuit. The receiver circuit is configured to receive a set of signals over a selected frequency band. The processor is configured to determine a subset of the set via an energy detection metric; determine, for each signal of the subset, whether that signal comprises one of a plurality of Long Term Evolution (LTE) reference signals (RSs); and implement a back-off procedure in response to a determination that at least one signal of the subset does not comprise one of the plurality of LTE RSs. The transmitter is configured to transmit a transmission comprising a first RS of the plurality of LTE RSs in response to a determination that each signal of the subset comprises one of the plurality of LTE RSs."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Enhanced listen-before-talk (LBT) for unlicensed band operation with cell splitting","description":"Techniques of enhanced listen-before-talk (LBT) at an Evolved NodeB (eNB) are discussed. An example apparatus within an eNB implementing such techniques comprises a receiver circuit, processor, and tr","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9615279","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-9615279","citation_suggestion":"Patentable. \"Enhanced listen-before-talk (LBT) for unlicensed band operation with cell splitting\" (US-9615279). https://patentable.app/patents/US-9615279","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9615279","json":"https://patentable.app/api/llm-context/US-9615279","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T06:44:34.337Z"}