Telcordia Technologies, Inc.

Kddi Corporation

Funchun Joseph Lin

Tsunehiko Chiba

Ashutosh Dutta

Subir Das

Akira Idoue

Abhrajit Ghosh

Hidetoshi Yokota

Kyriakos Manousakis

Dana Chee

Shih-wei Li

A mechanism by which handoff delay can be minimized while not compromising the IMS/MMD security and also protecting the media if required by certain applications is presented. One proactive method includes proactive authentication. Another proactive method includes proactive security association, such as transferring SA keys from old proxy to new proxy, or transferring keys through serving signal entities. Reactive methods include transferring SA keys from old proxy to new proxy, using either push or pull technology. Other reactive methods include transferring keys through serving signal entities using either push or pull technology.

P-CSCF fast handoff for IMS/MMS architecture

Growing community of inventors

Morris Plains, NJ, United States of America

Funchun Joseph Lin