{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9735971","patent":{"patent_number":"US-9735971","title":"High-availability, scalable policy and charging control systems, and methods therefor","assignee":null,"inventors":[],"filing_date":"2012-09-17T00:00:00.000Z","publication_date":"2017-08-15T00:00:00.000Z","cpc_codes":["H04L","H04L","H04M","H04L"],"num_claims":14,"abstract":"In a method carried out by a first and second policy and charging rules functions (PCRF) (201, 202), the first PCRF receives (s10), from a policy and charging enforcement function (PCEF) (100), an IP-CAN session establishment indication, determines (s20) first policy decision information, causes (s30) a database (300) accessible by both PCRFs to store, in association with a session identifier, session information comprising the session data and the first policy decision information; and provides (s40), to the PCEF, the first policy decision information. Later, the second PCRF receives (s50), from the PCEF, a session modification indication, obtains (s60) therefrom the session identifier, retrieves (s70), from the database, the session information, determines (s80) second policy decision information; causes (s90) the database to store session information comprising the modified session data and second policy decision information; and provides (s100), to the PCEF, the second policy decision information. The invention also relates to a system putting into practice such method."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"High-availability, scalable policy and charging control systems, and methods therefor","description":"In a method carried out by a first and second policy and charging rules functions (PCRF) (201, 202), the first PCRF receives (s10), from a policy and charging enforcement function (PCEF) (100), an IP-","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9735971","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-9735971","citation_suggestion":"Patentable. \"High-availability, scalable policy and charging control systems, and methods therefor\" (US-9735971). https://patentable.app/patents/US-9735971","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9735971","json":"https://patentable.app/api/llm-context/US-9735971","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T09:14:54.831Z"}