{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11252781","patent":{"patent_number":"US-11252781","title":"UE and communication method thereof","assignee":null,"inventors":[],"filing_date":"2019-04-09T00:00:00.000Z","publication_date":"2022-02-15T00:00:00.000Z","cpc_codes":["H04M","H04W","H04L","H04L","H04L","H04L","H04M","H04W","H04W","H04W","H04M","H04M","H04W"],"num_claims":14,"abstract":"A User Equipment (UE) including a controller configured to perform, in a case of failure of a connection attempt for a first emergency call that uses a Packet Switched (PS) domain, a connection attempt for a second emergency call that uses the PS domain, a transmission and/or reception unit configured to receive a service reject message due to the failure of the connection attempt for the first emergency call, wherein the UE uses a first access network for the connection attempt for the first emergency call, and the UE uses a second access network for the connection attempt for the second emergency call. Accordingly, a user equipment, a core network apparatus, a control method to be performed by an IMS apparatus, and the like are provided for the user equipment to connect to a network suitable for an emergency call service in 5th generation (5G) mobile communication system, which is a next-generation mobile communication system."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"UE and communication method thereof","description":"A User Equipment (UE) including a controller configured to perform, in a case of failure of a connection attempt for a first emergency call that uses a Packet Switched (PS) domain, a connection attemp","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11252781","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-11252781","citation_suggestion":"Patentable. \"UE and communication method thereof\" (US-11252781). https://patentable.app/patents/US-11252781","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11252781","json":"https://patentable.app/api/llm-context/US-11252781","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T11:55:27.559Z"}