{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-10531292","patent":{"patent_number":"US-10531292","title":"Security context handling in 5G during idle mode","assignee":null,"inventors":[],"filing_date":"2018-12-28T00:00:00.000Z","publication_date":"2020-01-07T00:00:00.000Z","cpc_codes":["H04W","H04L","H04W","H04W","H04W","H04W","H04W","H04L","H04W"],"num_claims":26,"abstract":"The present disclosure relates to methods and apparatus for flexible, security context management during AMF changes. One aspect of the disclosure is a mechanism for achieving backward security during AMF changes in idle mode. Instead of passing the current NAS key to the target AMF, the source AMF derives a new NAS key, provides the new NAS key to the target AMF, along with a key change indication indicating that the NAS key has changed. The target AMF sends the key change indication to the user equipment."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Security context handling in 5G during idle mode","description":"The present disclosure relates to methods and apparatus for flexible, security context management during AMF changes. One aspect of the disclosure is a mechanism for achieving backward security during","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-10531292","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-10531292","citation_suggestion":"Patentable. \"Security context handling in 5G during idle mode\" (US-10531292). https://patentable.app/patents/US-10531292","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-10531292","json":"https://patentable.app/api/llm-context/US-10531292","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T19:15:08.687Z"}