{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9681419","patent":{"patent_number":"US-9681419","title":"Seamless and resource efficient roaming for group call services on broadcast/multicast networks","assignee":null,"inventors":[],"filing_date":"2014-09-15T00:00:00.000Z","publication_date":"2017-06-13T00:00:00.000Z","cpc_codes":["H04W","H04M","H04W","H04W","H04W","H04W","H04W","H04W"],"num_claims":41,"abstract":"Various aspects and embodiments may provide seamless and resource efficient roaming for group call services on broadcast/multicast networks. In particular, upon a user equipment (UE) roaming or detecting an imminent move from a current Public Land Mobile Network (PLMN) to a Visited PLMN (VPLMN), an application server in a Home PLMN associated with the UE may determine whether to establish a multicast bearer in the VPLMN if the UE has pre-registered for group call services in the VPLMN and provide the UE with information about bearers that will support the group call services in the VPLMN. For example, the multicast bearer may be established in the VPLMN if a number of users actively participating in the VPLMN exceeds a threshold, or the group call services may alternatively be supported over unicast service only if the number of actively participating users in the VPLMN is below the threshold."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Seamless and resource efficient roaming for group call services on broadcast/multicast networks","description":"Various aspects and embodiments may provide seamless and resource efficient roaming for group call services on broadcast/multicast networks. In particular, upon a user equipment (UE) roaming or detect","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9681419","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-9681419","citation_suggestion":"Patentable. \"Seamless and resource efficient roaming for group call services on broadcast/multicast networks\" (US-9681419). https://patentable.app/patents/US-9681419","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9681419","json":"https://patentable.app/api/llm-context/US-9681419","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T12:47:22.852Z"}