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:
Dec. 09, 2014
Filed:
Mar. 18, 2012
Vachaspati P. Kompella, Cupertino, CA (US);
Satyam Sinha, Sunnyvale, CA (US);
Sathyender Nelakonda, Saratoga, CA (US);
Praveen Vasant Muley, Mountain View, CA (US);
Vachaspati P. Kompella, Cupertino, CA (US);
Satyam Sinha, Sunnyvale, CA (US);
Sathyender Nelakonda, Saratoga, CA (US);
Praveen Vasant Muley, Mountain View, CA (US);
Alcatel Lucent, Boulogne-Billancourt, FR;
Abstract
A method, system and apparatus for managing a backup service gateway (SGW) associated with a primary SGW, the backup SGW periodically receiving from the primary SGW at least a portion of corresponding UE session state information and in response to a failure of the primary SGW, assuming management of IP addresses and paths associated with the primary SGW, and in response to receiving control or data plane traffic associated with a UE, generating a Downlink Data Notification (DDN) message adapted to inform an MME that the UE is in a live state.