{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-10470212","patent":{"patent_number":"US-10470212","title":"Method, apparatus, and system for channel access in unlicensed band","assignee":null,"inventors":[],"filing_date":"2018-04-23T00:00:00.000Z","publication_date":"2019-11-05T00:00:00.000Z","cpc_codes":["H04W","H04L","H04L","H04L","H04W","H04W","H04W","H04W"],"num_claims":16,"abstract":"The present invention relates to a method, an apparatus and a system for adjusting a contention window size for performing channel access. In particular, the present invention provides a method comprising: receiving a plurality of hybrid automatic repeat request acknowledgment (HARQ-ACK) responses for downlink transmission(s) in a reference subframe of the specific cell; setting a contention window size for a transmission in the specific cell; selecting a random number N within the contention window size; and performing, when a channel of the specific cell is idle for at least N slot periods, a downlink transmission on the channel, wherein the setting a contention window size comprises: increasing the contention window size to a next higher allowed value and maintaining the increased value when a ratio of negative acknowledgement (NACK) among the plurality of HARQ-ACK responses is equal to or more than a reference value, and setting the contention window size to a minimum value when the ratio of the NACK among the plurality of HARQ-ACK responses is less than the reference value, and an apparatus and a system therefor."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method, apparatus, and system for channel access in unlicensed band","description":"The present invention relates to a method, an apparatus and a system for adjusting a contention window size for performing channel access. In particular, the present invention provides a method compri","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-10470212","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-10470212","citation_suggestion":"Patentable. \"Method, apparatus, and system for channel access in unlicensed band\" (US-10470212). https://patentable.app/patents/US-10470212","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-10470212","json":"https://patentable.app/api/llm-context/US-10470212","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T19:52:23.782Z"}