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. 15, 2009
Filed:
Feb. 05, 2007
Lewis J. Milton, Glencoe, IL (US);
Shahab M. Sayeedi, Naperville, IL (US);
Xiang Xu, Jiangsu, CN;
Motorola Inc., Schaumburg, IL (US);
Abstract
A communication system utilizes an interface terminating at a base station (BS) of a circuit services network and a wireless packet data node in a packet data network and DOS over DBM signaling between the BS and an access terminal (AT), thereby permitting the communication system to tunnel SIP messaging between the AT and an IMS network via the BS and a packet data node and to tunnel HRPD traffic channel information and an HRPD identifier from the packet data network to the AT via the BS. Thus, a handoff of a voice call involving the AT may be initiated from the circuit services network to the packet data networking prior to the AT establishing a call dialogue with the packet data network.