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:
Mar. 22, 2016
Filed:
Nov. 06, 2009
Hong Cheng, Singapore, SG;
Tien Ming Benjamin Koh, Singapore, SG;
Xia LI, Singapore, SG;
Takako Hori, Kanagawa, JP;
Hong Cheng, Singapore, SG;
Tien Ming Benjamin Koh, Singapore, SG;
Xia Li, Singapore, SG;
Takako Hori, Kanagawa, JP;
PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA, Torrance, CA (US);
Abstract
The invention discloses a technique to adequately control a handover of a user terminal in a data communication network and to decrease the number of signalings. According to this technique, when address of a user terminal (UE ()) is not changed after a handover, UE () transmits a session update signaling message to carry out update processing of application session to P-CSCF 1 () corresponding to a location before the handover via P-CSCF 2 () corresponding to a location after the handover. P-CSCF 1 () transfers a session update signaling message to S-CSCF/AS () by using setup of signaling relating to UE () before the handover. At S-CSCF/AS (), the application session is updated by using registration information of UE () before the handover.