{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9686709","patent":{"patent_number":"US-9686709","title":"Method, apparatus and system for guaranteeing QoS of communication service in NAT scenario","assignee":null,"inventors":[],"filing_date":"2014-05-15T00:00:00.000Z","publication_date":"2017-06-20T00:00:00.000Z","cpc_codes":["H04W","H04L","H04L","H04L","H04L","H04L","H04L"],"num_claims":15,"abstract":"A method includes: when a user equipment initiates a communication request, controlling an A-BGF network element to generate proxy SDP information according to calling party SDP information, and replacing the calling party SDP information with the proxy SDP information to establish a connection between the user equipment and a called party; after a connection between both communication parties is successful, instructing a PCRF network element to perform QoS resource reservation; and receiving a NAT-translated-to IP address and a port of the user equipment from the A-BGF network element, and instructing the PCRF network element to update source address information for the QoS resource reservation to the NAT-translated-to IP address and the port of the user equipment. The present invention achieves QoS guarantee of a communication service in a NAT scenario without imposing any special interface requirement on the user equipment."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method, apparatus and system for guaranteeing QoS of communication service in NAT scenario","description":"A method includes: when a user equipment initiates a communication request, controlling an A-BGF network element to generate proxy SDP information according to calling party SDP information, and repla","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9686709","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-9686709","citation_suggestion":"Patentable. \"Method, apparatus and system for guaranteeing QoS of communication service in NAT scenario\" (US-9686709). https://patentable.app/patents/US-9686709","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9686709","json":"https://patentable.app/api/llm-context/US-9686709","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T07:14:41.432Z"}