{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9832746","patent":{"patent_number":"US-9832746","title":"Enhanced mechanism of uplink time alignment maintenance for inter-ENB carrier aggregation","assignee":null,"inventors":[],"filing_date":"2015-07-24T00:00:00.000Z","publication_date":"2017-11-28T00:00:00.000Z","cpc_codes":["H04W","H04L","H04L","H04W","H04L","H04L","H04L"],"num_claims":20,"abstract":"Apparatus and method are provided to configure two-tier identifiers for serving cells of a UE configured with inter-eNB carrier aggregation (CA). In one novel aspect, cell group identifiers are configured. The cell group identifier is a super set of one or more uplink group identifiers that are associated with serving cells served by the same base station. In one embodiment, different MAC entities are associated with different cell group identifiers. The UE performs uplink alignment, monitoring and management procedures linking to the cell group identifier. In another novel aspect, a group TAG, which is a super set identifier of one or more cell TAGs associated with serving cells served by the same base station, is configured. In one embodiment, the UE performs uplink alignment procedure based on the status of the group TAG, which is determined based on the status of the cell TAGs associated with the group TAG."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Enhanced mechanism of uplink time alignment maintenance for inter-ENB carrier aggregation","description":"Apparatus and method are provided to configure two-tier identifiers for serving cells of a UE configured with inter-eNB carrier aggregation (CA). In one novel aspect, cell group identifiers are config","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9832746","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-9832746","citation_suggestion":"Patentable. \"Enhanced mechanism of uplink time alignment maintenance for inter-ENB carrier aggregation\" (US-9832746). https://patentable.app/patents/US-9832746","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9832746","json":"https://patentable.app/api/llm-context/US-9832746","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T08:21:08.979Z"}