{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9756523","patent":{"patent_number":"US-9756523","title":"Enhanced mechanism of uplink time alignment maintenance for inter-eNB carrier aggregation","assignee":null,"inventors":[],"filing_date":"2015-07-21T00:00:00.000Z","publication_date":"2017-09-05T00:00:00.000Z","cpc_codes":["H04W","H04W","H04W"],"num_claims":22,"abstract":"Apparatus and method are provided to enhance buffer status report (BSR) to multiple schedulers with inter base station carrier aggregation. In one novel aspect, the UE calculates a buffer size value, detects a BSR trigger event, selects one or more base stations (BSs) to send the BSR reports and generates the BSR reports for the selected one or more BSs. In one embodiment, one BS is selected based on predefined criteria. In other embodiments, multiple base stations are selected. In one embodiment, the same contents for BSR are generated. In another embodiment, different BSR reports are generated for different base stations from which the UE receives UL grants. In one novel aspect, the UE calculates a buffer size value and determines if a budget BSR triggering criteria is satisfied. The UE triggers budget BSR procedure by sending a budget BSR report to a selected base station based on predefined thresholds."},"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 enhance buffer status report (BSR) to multiple schedulers with inter base station carrier aggregation. In one novel aspect, the UE calculates a buffer size value, ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9756523","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-9756523","citation_suggestion":"Patentable. \"Enhanced mechanism of uplink time alignment maintenance for inter-eNB carrier aggregation\" (US-9756523). https://patentable.app/patents/US-9756523","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9756523","json":"https://patentable.app/api/llm-context/US-9756523","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T10:33:45.193Z"}