{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9756658","patent":{"patent_number":"US-9756658","title":"System and method for contention-free random access","assignee":null,"inventors":[],"filing_date":"2013-06-25T00:00:00.000Z","publication_date":"2017-09-05T00:00:00.000Z","cpc_codes":["H04W","H04W","H04W"],"num_claims":22,"abstract":"A method for initiating a random access includes generating a first downlink control information (DCI) including random access parameters and selecting a control channel from a first downlink control channel in common search space of a first subframe and a second downlink control channel in a data region of the first subframe. The method also includes mapping the first DCI to the control channel and transmitting, by a communications controller to a UE, symbols of the first subframe including the first DCI in the control channel. Additionally, the method includes receiving, by the communications controller from the UE, a random access waveform in accordance with the random access parameters and transmitting, by the communications controller to the UE, after receiving the random access waveform, a second subframe including a second DCI in a control channel of the second subframe, where the second DCI includes scheduling information for a random access response."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"System and method for contention-free random access","description":"A method for initiating a random access includes generating a first downlink control information (DCI) including random access parameters and selecting a control channel from a first downlink control ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9756658","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-9756658","citation_suggestion":"Patentable. \"System and method for contention-free random access\" (US-9756658). https://patentable.app/patents/US-9756658","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9756658","json":"https://patentable.app/api/llm-context/US-9756658","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T09:36:07.920Z"}