{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9629036","patent":{"patent_number":"US-9629036","title":"Method and apparatus for performing handover using packet data convergence protocol (PDCP) reordering in mobile communication system","assignee":null,"inventors":[],"filing_date":"2013-11-19T00:00:00.000Z","publication_date":"2017-04-18T00:00:00.000Z","cpc_codes":["H04L","H04W","H04W","H04W"],"num_claims":16,"abstract":"Improving communication efficiency in handover re-establishing an ARQ entity in a mobile communication system is disclosed. The method includes transmitting first Packet Data Convergence Protocol (PDCP) Packet Data Units (PDUs) correctly received from the source cell, together with a special indication requiring reordering of the first PDCP PDUs, from a Radio Link Control (RLC) receiving buffer to a PDCP receiving entity when a handover command message from a source cell to a target cell is received; buffering the first PDCP PDUs in a PDCP PDU reordering buffer by the PDCP receiving entity in response to the special indication; and when a second PDCP PDU is received from the target cell through a new RLC receiving entity for the target cell, outputting third PDCP PDUs up to a PDCP PDU before a first missing PDCP PDU having a sequence number higher than that of the second PDCP PDU from the PDCP reordering buffer. In the method, a PDCP entity performs reordering, thereby improving efficiency of communication."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and apparatus for performing handover using packet data convergence protocol (PDCP) reordering in mobile communication system","description":"Improving communication efficiency in handover re-establishing an ARQ entity in a mobile communication system is disclosed. The method includes transmitting first Packet Data Convergence Protocol (PDC","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9629036","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-9629036","citation_suggestion":"Patentable. \"Method and apparatus for performing handover using packet data convergence protocol (PDCP) reordering in mobile communication system\" (US-9629036). https://patentable.app/patents/US-9629036","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9629036","json":"https://patentable.app/api/llm-context/US-9629036","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T08:00:16.558Z"}