Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2010-09-01
2011-10-18
Miller, Brandon (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S411000, C455S436000
Reexamination Certificate
active
08041360
ABSTRACT:
A scheme that enables seamless roaming between the WLAN and the cellular carrier network by enabling a user that originates a call in the WLAN and happens to go outside the range of the WLAN to automatically switch over to the cellular carrier network without losing connection with the other party. This solution assumes that the mobile device has the capability to operate in at least two modes that include the WLAN mode and one of the cellular carrier modes, such as the GSM, IS-95 CDMA, IS-136 TDMA, and iDEN.
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Ibe Oliver C.
Zeng Jianyu
Kraasten Bros. Fund B.V. LLC
McDonnell Boehnen & Hulbert & Berghoff LLP
Miller Brandon
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