{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11277717","patent":{"patent_number":"US-11277717","title":"Mobile terminating call retry logic for multiple radio access technology types","assignee":null,"inventors":[],"filing_date":"2019-11-25T00:00:00.000Z","publication_date":"2022-03-15T00:00:00.000Z","cpc_codes":["H04W","H04W","H04L","H04L","H04L","H04L","H04W","H04W","H04W","H04W","H04W"],"num_claims":20,"abstract":"An Internet Protocol Multimedia Subsystem (IMS) application server can initially attempt to route a terminating call invite to a user equipment (UE) via a packet-switched (PS) domain radio access network (RAN). However, if that initial attempt fails, the application server can follow either a PS retry option to reattempt routing the terminating call invite via a PS-domain RAN, or a circuit-switched (CS) retry option to instead reattempt routing the terminating call invite via a CS-domain RAN. In some examples, if Home Subscriber Server (HSS) data indicates that the UE is connected to a Long-Term Evolution (LTE) RAN and that CS-domain location information for the UE is older than a threshold, the application server can enable the PS retry option. However, if the UE is connected to an LTE RAN but the CS-domain location information is more recent than the threshold, the application server can instead enable the CS retry option."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Mobile terminating call retry logic for multiple radio access technology types","description":"An Internet Protocol Multimedia Subsystem (IMS) application server can initially attempt to route a terminating call invite to a user equipment (UE) via a packet-switched (PS) domain radio access netw","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11277717","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-11277717","citation_suggestion":"Patentable. \"Mobile terminating call retry logic for multiple radio access technology types\" (US-11277717). https://patentable.app/patents/US-11277717","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11277717","json":"https://patentable.app/api/llm-context/US-11277717","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T01:16:03.443Z"}