{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9807718","patent":{"patent_number":"US-9807718","title":"Secondary cell synchronization for carrier aggregation","assignee":null,"inventors":[],"filing_date":"2013-09-25T00:00:00.000Z","publication_date":"2017-10-31T00:00:00.000Z","cpc_codes":["H04W","H04L","H04L","H04W"],"num_claims":34,"abstract":"A carrier aggregation application method is provided of attaining time synchronization to a secondary cell for a wireless communication device usable in a cellular communication network. The method comprises, if a time reference of the secondary cell is unknown to the wireless communication device: setting a preliminary time reference of the secondary cell to equal a time reference of a primary cell of the carrier aggregation application; performing a synchronization signal based detection of the time reference of the secondary cell based on the preliminary time reference and one or more synchronization signals transmitted in the secondary cell; performing preliminary time reference based channel state measurements of the secondary cell based on the preliminary time reference and one or more reference signals transmitted in the secondary cell; setting, based on the synchronization signal based detection, a value of a channel quality indicator to either a nominal value or a value based on the preliminary time reference based channel state measurements; and transmitting a channel state information report comprising the channel quality indicator to the cellular communication network. An arrangement for a wireless communication device usable in a cellular communication network, adapted to attain time synchronization to a secondary cell of a carrier aggregation application is also disclosed. A modem comprising the arrangement and wireless communication device comprising the arrangement are also disclosed."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Secondary cell synchronization for carrier aggregation","description":"A carrier aggregation application method is provided of attaining time synchronization to a secondary cell for a wireless communication device usable in a cellular communication network. The method co","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9807718","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-9807718","citation_suggestion":"Patentable. \"Secondary cell synchronization for carrier aggregation\" (US-9807718). https://patentable.app/patents/US-9807718","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9807718","json":"https://patentable.app/api/llm-context/US-9807718","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T07:20:09.794Z"}