Method of seamless roaming between wireless local area...

Details Method of seamless roaming between wireless local area... Method of seamless roaming between wireless local area...

2003-10-17

2010-11-16

Eng, George (Department: 2617)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

C455S432100, C370S338000

Reexamination Certificate

active

07835751

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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