{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11252618","patent":{"patent_number":"US-11252618","title":"Radio terminal and base station capable of handover without performing RACH handover","assignee":null,"inventors":[],"filing_date":"2020-08-04T00:00:00.000Z","publication_date":"2022-02-15T00:00:00.000Z","cpc_codes":["H04W","H04J","H04W","H04W","H04W","H04W"],"num_claims":3,"abstract":"User equipment, apparatus and method perform dual connectivity with a first base station acting as a master base station and a second base station acting as a secondary base station, transmit to the master base station capability information indicating that the user equipment supports a function of skipping a random access procedure, and receive from the master base station, a message instructing to change the secondary base station from the second base station to a third base station. The message includes information indicating that random access procedure for the third base station is skipped and an including an uplink grant indicating radio resources allocated by the third base station and a timing advance (TA) value to be applied to an uplink transmission to the third base station. The user equipment transmits the uplink transmission to the third base station by using the uplink radio resources indicated by the uplink grant."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Radio terminal and base station capable of handover without performing RACH handover","description":"User equipment, apparatus and method perform dual connectivity with a first base station acting as a master base station and a second base station acting as a secondary base station, transmit to the m","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11252618","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-11252618","citation_suggestion":"Patentable. \"Radio terminal and base station capable of handover without performing RACH handover\" (US-11252618). https://patentable.app/patents/US-11252618","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11252618","json":"https://patentable.app/api/llm-context/US-11252618","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T16:57:15.216Z"}