{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9843497","patent":{"patent_number":"US-9843497","title":"Method and device for long-term storage of cross-domain path information","assignee":null,"inventors":[],"filing_date":"2014-02-28T00:00:00.000Z","publication_date":"2017-12-12T00:00:00.000Z","cpc_codes":["H04L","H04L","H04L","H04L"],"num_claims":10,"abstract":"A method and device for long-term storage of cross-domain path information are provided. The method is applied on a stateless PCE. In the method, a first PCE computes a path; a path head node sends, to the first PCE, query information for querying intra-domain path information of the first domain corresponding to a first PATH-KEY, generates, on the basis of a query result returned by the first PCE, a third PATH-KEY having a unique identifier and corresponding to the intra-domain path information of the first domain and stores the third PATH-KEY; the path head node sends, to a head node in a second domain, an inter-domain path establishment signalling comprising the third PATH-KEY and a second PATH-KEY, to make the head node in the second domain send, to a second PCE, query information for querying intra-domain path information of the second domain corresponding to the second PATH-KEY, generate, on the basis of a query result returned by the second PCE, a fourth PATH-KEY having a unique identifier and corresponding to the intra-domain path information of the second domain, and store the fourth PATH-KEY; and, the path head node modifies information of the path from the path head node to the path tail node on the basis of a reverse signalling returned by the path tail node and comprising the third PATH-KEY and the fourth PATH-KEY."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and device for long-term storage of cross-domain path information","description":"A method and device for long-term storage of cross-domain path information are provided. The method is applied on a stateless PCE. In the method, a first PCE computes a path; a path head node sends, t","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9843497","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-9843497","citation_suggestion":"Patentable. \"Method and device for long-term storage of cross-domain path information\" (US-9843497). https://patentable.app/patents/US-9843497","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9843497","json":"https://patentable.app/api/llm-context/US-9843497","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T16:29:40.742Z"}