Apparatus, system and method for determining a geographical location of a portable communication device
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United States of America Patent
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Jan 24, 2012
Grant Date -
Oct 23, 2008
app pub date -
Apr 19, 2007
filing date -
Apr 19, 2007
priority date (Note) -
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Abstract
A wireless access point receives a reverse link (RL) wireless wide area network (WWAN) signals from a wireless communication device and forwards wireless local area network (WLAN) location information related to the received RL WWAN signal to a position determining entity (PDE). The PDE uses the WLAN location information and, in some cases, other location information to determine the geographical location of the wireless communication device. The WLAN location information is any information that at least assists the PDE in determining the geographical location of the wireless communication device and may include any combination of data related to signal strength of the WWAN RL signal, a propagation time of WWAN RL signal, a distance between the access point and the wireless access point, a geographical location of the access point, and/or a geographical location of the wireless communication device.
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