SPI handling between UE and P-CSCF in an IMS network

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United States of America Patent

PATENT NO 9729588
SERIAL NO

14729025

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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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).

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Patent Owner(s)

  • T-MOBILE USA, INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kalepu, Kalyan Sammamish, US 10 31
Mufti, Shujaur Snoqualmie, US 70 382

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