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:
Sep. 08, 2015
Filed:
Nov. 20, 2007
Edward Grinshpun, Freehold, NJ (US);
Chung-zin Liu, Naperville, IL (US);
Simon S. Ou, Naperville, IL (US);
Lily H. Zhu, Parsippany, NJ (US);
Edward Grinshpun, Freehold, NJ (US);
Chung-Zin Liu, Naperville, IL (US);
Simon S. Ou, Naperville, IL (US);
Lily H. Zhu, Parsippany, NJ (US);
Alcatel Lucent, Boulogne-Billancourt, FR;
Abstract
The present invention provides methods of inter-technology handoff of a multi-mode mobile unit in a packet-switched communication system. One embodiment of the method includes establishing a call from a first application layer client in the first mobile unit using a first wireless communication link that operates according to a first wireless access technology. The method also includes sending, in response to detecting changing conditions of the first wireless communication link, a request to form a conference call including the first application layer client and inviting a second application layer client in the first mobile unit to join the conference call. The second application layer client uses a second wireless communication link that operates according to a second wireless access technology. The method further includes handing off the call from the first application layer client to the second application layer client.