{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9730221","patent":{"patent_number":"US-9730221","title":"Radio communication system, base station device, mobile station device, and random access method","assignee":null,"inventors":[],"filing_date":"2014-04-23T00:00:00.000Z","publication_date":"2017-08-08T00:00:00.000Z","cpc_codes":["H04W","H04L","H04W","H04W","H04W"],"num_claims":2,"abstract":"A mobile station (MS) performs a first random access procedure using a dedicated preamble for non-contention based random access on a first available random access channel (RACH) of a plurality of RACHs in time domain within a period that the dedicated preamble is valid. In addition, the MS performs a second random access procedure using the dedicated preamble for non-contention based random access on the first available RACH after the predetermined time window has expired in a case that a random access response to the transmitted preamble is not received within a predetermined time window monitoring for the random access response. The MS also transmits the dedicated preamble on a RACH allowed to transmit by the BS, where any one of the RACHs in frequency domain is allowed to be transmitted by the BS over a period of time that the plurality of RACHs are allocated to a single carrier."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Radio communication system, base station device, mobile station device, and random access method","description":"A mobile station (MS) performs a first random access procedure using a dedicated preamble for non-contention based random access on a first available random access channel (RACH) of a plurality of RAC","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9730221","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-9730221","citation_suggestion":"Patentable. \"Radio communication system, base station device, mobile station device, and random access method\" (US-9730221). https://patentable.app/patents/US-9730221","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9730221","json":"https://patentable.app/api/llm-context/US-9730221","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T11:15:36.944Z"}