{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9661478","patent":{"patent_number":"US-9661478","title":"Method and apparatus for implementing trunking group call service","assignee":null,"inventors":[],"filing_date":"2014-07-03T00:00:00.000Z","publication_date":"2017-05-23T00:00:00.000Z","cpc_codes":["H04W","H04W","H04W"],"num_claims":20,"abstract":"A method and an apparatus for implementing a group call service. A user equipment of the trunking group call service receives group configuration information and a downlink assignment message and/or an uplink grant message from an evolved cell. The user equipment saves the group configuration information and the downlink assignment message and/or the uplink grant message. If the user equipment is in a group receive state at different points of time, trunking group call service data is saved by sharing a downlink resource, indicated by the downlink assignment message, with another user equipment in the group in a semi-persistent scheduling manner according to the group configuration information."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and apparatus for implementing trunking group call service","description":"A method and an apparatus for implementing a group call service. A user equipment of the trunking group call service receives group configuration information and a downlink assignment message and/or a","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9661478","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-9661478","citation_suggestion":"Patentable. \"Method and apparatus for implementing trunking group call service\" (US-9661478). https://patentable.app/patents/US-9661478","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9661478","json":"https://patentable.app/api/llm-context/US-9661478","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T15:39:31.417Z"}