Method of seamless roaming between wireless local area networks and cellular carrier networks
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United States of America Patent
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Nov 16, 2010
Issued Date -
N/A
app pub date -
Oct 17, 2003
filing date -
Oct 18, 2002
priority date (Note) -
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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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