{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9729588","patent":{"patent_number":"US-9729588","title":"SPI handling between UE and P-CSCF in an IMS network","assignee":null,"inventors":[],"filing_date":"2015-06-02T00:00:00.000Z","publication_date":"2017-08-08T00:00:00.000Z","cpc_codes":["H04L","H04L","H04L","H04L","H04L","H04L","H04W","H04W"],"num_claims":20,"abstract":"Managing Security Parameter Information (SPIs) to prevent race condition failures begins where a system negotiates SPIs along with associated expiration times, and re-negotiates new SPIs as necessary. The system prevents race conditions that would otherwise occur when both an old SPI and a new SPI are active at the same time. The system accomplishes this by managing the storage and deletion of old SPIs such that only active SPIs are stored on the system for use by a User Equipment (UE) or Proxy Call Session Control Function (P-CSCF)."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"SPI handling between UE and P-CSCF in an IMS network","description":"Managing Security Parameter Information (SPIs) to prevent race condition failures begins where a system negotiates SPIs along with associated expiration times, and re-negotiates new SPIs as necessary.","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9729588","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-9729588","citation_suggestion":"Patentable. \"SPI handling between UE and P-CSCF in an IMS network\" (US-9729588). https://patentable.app/patents/US-9729588","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9729588","json":"https://patentable.app/api/llm-context/US-9729588","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T05:59:41.069Z"}