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:
May. 29, 2012
Filed:
Mar. 23, 2007
Ryoji Kato, Kanagawa, JP;
Shinta Sugimoto, Kanagawa, JP;
Toshikane Oda, Tokyo, JP;
Telefonaktibolaget L M Ericsson (Publ), Stockholm, SE;
Abstract
A method and apparatus for routing communications traffic in a Proxy Mobile IP communications network. A Mobile Node is attached to a first Proxy Mobile Agent, and an optimized route is established between the Mobile Node and a Corresponding Node via the first Proxy Mobile Agent. When the Mobile Node subsequently attaches to a second Proxy Mobile Agent, a determination is made that the Mobile Node is no longer attached to the first Proxy Mobile Agent. As a result of the determination a request is sent from the first Proxy Mobile Agent to the Corresponding Node to cancel the route optimization. In one embodiment, packets from the Corresponding Node are bi-cast from the Proxy Mobile Agent to the Home Agent and the Mobile Node. The Proxy Mobile Agent determines that the Mobile Node is no longer attached to if packets are not returned from the Home Agent.