Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2005-05-03
2005-05-03
Hudspeth, David (Department: 2681)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S439000, C370S331000
Reexamination Certificate
active
06889045
ABSTRACT:
The present invention provides a method and apparatus that enables handover of a mobile station between a cellular network and a wireless network without control intervention from the cellular network and independent of employed air interface technology. The signaling and control of a switch, for example SS7 messaging, is not required to achieve the handovers implemented by the present invention. In particular, a call is connected (504) between a mobile station (202) and a remote station (204) through a media gateway (210). The media gateway is connected to the mobile station via a first connection line and to the remote station via a second connection line. Next, a communication directed to a predetermined number by the mobile station is received (520) or, in the alternative, a connection signal that includes a call header is sent to the mobile station. A third connection line between the media gateway and the mobile station is then established (524). Thereafter, communication between the media gateway and the mobile station is handed-over (526, 528) from the first connection line to the third connection line.
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Favila Angel
Labun Nicholas
Pan Shaowei
Zhang Jinzhong
Hudspeth David
Motorola Inc.
Smith S.
Watanabe Hisashi D.
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