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:
Jan. 20, 2009
Filed:
Jul. 07, 2003
Kazuhiro Shitama, Chiba, JP;
Kuniaki Kurihara, Tokyo, JP;
Kazuhiro Shitama, Chiba, JP;
Kuniaki Kurihara, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
An apparatus and method that being capable of implementing uninterrupted communication during performing a handover process by a mobile node are provided. A mobile node transmits a handover start message containing address information of a destination access point, to a switch as a data forwarding controller, and the switch adds an entry to a MAC learning table based on the address contained in the message. The switch forwards packets addressed to the mobile node to a current access point of the mobile node as well as to its destination access point in parallel based on the entries in the MAC learning table. The mobile node can receive data packets at once upon connection to the new access point after having performed a handover.