The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 08, 2017
Filed:
Jun. 02, 2015
Applicant:
T-mobile U.s.a., Inc., Bellevue, WA (US);
Inventors:
Kalyan Kalepu, Sammamish, WA (US);
Shujaur Mufti, Snoqualmie, WA (US);
Assignee:
T-Mobile USA, Inc., Bellevue, WA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04W 4/00 (2009.01); H04J 1/00 (2006.01); H04L 29/06 (2006.01); H04W 12/08 (2009.01);
U.S. Cl.
CPC ...
H04L 65/40 (2013.01); H04L 63/108 (2013.01); H04L 63/205 (2013.01); H04L 65/1016 (2013.01); H04L 65/1073 (2013.01); H04W 12/08 (2013.01);
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).