{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9717078","patent":{"patent_number":"US-9717078","title":"Method and apparatus for deactivating secondary carriers in mobile communication system using carrier aggregation","assignee":null,"inventors":[],"filing_date":"2015-01-15T00:00:00.000Z","publication_date":"2017-07-25T00:00:00.000Z","cpc_codes":["H04W","H04L","H04L","H04L","H04L","H04L","H04L","H04L","H04L","H04L","H04L","H04L","H04L","H04W","H04W","H04W","H04W","H04W","H04W","H04W","H04W","H04W","H04W","H04W","H04W","H04W","H04W","H04W","H04W","H04W","H04W","H04W","H04W","H04W","H04W","H04W","H04W","H04W","H04W","H04W","H04L","H04L","H04W","H04W","H04W","H04W","H04W","H04W","H04W","H04W","H04W","H04W"],"num_claims":20,"abstract":"A method and an apparatus in a mobile communication system are provided. The method by a terminal in a mobile communication system includes receiving first information for activating a secondary cell (SCell) from a base station, activating the SCell based on the first information, starting a timer associated with the SCell, restarting, if second information for the activated SCell is received from the base station, the timer associated with the SCell, and if the timer expires, applying by the terminal, one or more corresponding actions for deactivating the SCell no later than in a predefined subframe. The one or more corresponding actions include at least one of preventing from transmitting a sounding reference signal (SRS) on the SCell, and preventing from reporting at least one of a channel quality indicator (CQI), a precoding matrix index (PMI), a rank indicator (RI), and a precoder type indicator (PTI) for the SCell"},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and apparatus for deactivating secondary carriers in mobile communication system using carrier aggregation","description":"A method and an apparatus in a mobile communication system are provided. The method by a terminal in a mobile communication system includes receiving first information for activating a secondary cell ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9717078","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-9717078","citation_suggestion":"Patentable. \"Method and apparatus for deactivating secondary carriers in mobile communication system using carrier aggregation\" (US-9717078). https://patentable.app/patents/US-9717078","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9717078","json":"https://patentable.app/api/llm-context/US-9717078","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T12:48:43.256Z"}