{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9681326","patent":{"patent_number":"US-9681326","title":"Hybrid automatic repeat request (HARQ) mapping for carrier aggregation (CA)","assignee":null,"inventors":[],"filing_date":"2013-04-19T00:00:00.000Z","publication_date":"2017-06-13T00:00:00.000Z","cpc_codes":["H04W","H04W","H04B","H04J","H04J","H04J","H04L","H04L","H04L","H04L","H04L","H04L","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","H04W","H04W","H04W","H04W","H04W","H04W","H04W","H04W","H04W","H04W","H04W","H04W","H04W","H04W","H04W","H04W","H04L","H04W","H04W","H04W","H04W","H04W","H04W","H04W","H04W","H04W","H04W","H04W","H04W","H04W"],"num_claims":15,"abstract":"Technology for conditional hybrid automatic retransmission re-quest (HARQ) mapping for carrier aggregation (CA) is disclosed. One method can include a user equipment (UE) determining when a subframe for physical downlink shared channel (PDSCH) transmission is configured for downlink semi-persistent scheduling (SPS). The subframe configured for downlink SPS can generate a first condition. The UE can generate HARQ-ACK states for the first condition for a HARQ bundling window with discontinuous transmission (DTX) padding for a secondary HARQ bundling window size for a secondary cell (SCell) and a primary HARQ bundling window size for a primary cell (PCell). The UE can generate HARQ-ACK states for a second condition for the HARQ bundling window with DTX padding including a DTX padding exception. The second condition can include conditions not covered by the first condition. The DTC padding exception can generate a set of HARQ-ACK states to uniquely define each padded HARQ-ACK state."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Hybrid automatic repeat request (HARQ) mapping for carrier aggregation (CA)","description":"Technology for conditional hybrid automatic retransmission re-quest (HARQ) mapping for carrier aggregation (CA) is disclosed. One method can include a user equipment (UE) determining when a subframe f","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9681326","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-9681326","citation_suggestion":"Patentable. \"Hybrid automatic repeat request (HARQ) mapping for carrier aggregation (CA)\" (US-9681326). https://patentable.app/patents/US-9681326","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9681326","json":"https://patentable.app/api/llm-context/US-9681326","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T05:16:14.615Z"}