{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9820020","patent":{"patent_number":"US-9820020","title":"Grooming method and device for packet optical transport network","assignee":null,"inventors":[],"filing_date":"2014-04-16T00:00:00.000Z","publication_date":"2017-11-14T00:00:00.000Z","cpc_codes":["H04J","H04L","H04Q","H04Q","H04Q","H04Q"],"num_claims":14,"abstract":"A grooming method and apparatus for a packet optical transport network are disclosed. The method includes: according to an arrangement order of various services, planning a path from a service source node to a service target node in an ith service in a topology set graph; when the path includes a wavelength link in a physical link, removing the wavelength link, and establishing a virtual link between a link source node and a link target node of the removed wavelength link; updating capacities of various links in the path; calculating a weight of a newly established virtual link, and adding the newly established virtual link and the corresponding weight to the topology set graph; and planning a path from a service source node to a service target node in an i+1th service in the topology set graph, until all services are finished."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Grooming method and device for packet optical transport network","description":"A grooming method and apparatus for a packet optical transport network are disclosed. The method includes: according to an arrangement order of various services, planning a path from a service source ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9820020","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-9820020","citation_suggestion":"Patentable. \"Grooming method and device for packet optical transport network\" (US-9820020). https://patentable.app/patents/US-9820020","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9820020","json":"https://patentable.app/api/llm-context/US-9820020","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T07:18:35.430Z"}