Method and system for triggering handoff of a call between networks
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United States of America Patent
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Jul 25, 2006
Grant Date -
Mar 17, 2005
app pub date -
Sep 12, 2003
filing date -
Sep 12, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
A method for handing off a call between networks includes monitoring a quality of a first link between a mobile station and a wireless local area network (WLAN) when the mobile station is actively connected with the WLAN on a call and monitoring a quality of a second link between the mobile station and a cellular network when the mobile station is actively connected with the WLAN on the call. The method also includes handing off the call from the WLAN to the cellular network when the quality of the first link is less than a handoff trigger threshold for a drop count duration and when the quality of the second link is greater than a minimum cellular link quality threshold.
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