Technique to facilitate location determination of wireless...

Details Technique to facilitate location determination of wireless... Technique to facilitate location determination of wireless...

2006-03-21

2006-03-21

Young, W. R. (Department: 2685)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

C455S404200, C455S457000

Reexamination Certificate

active

07016692

ABSTRACT:
A channel for location estimation based on a wireless data communication from a mobile station is selected based on one or more of signal duration, variability and power level/signal-to-noise ratio of at least a portion of the wireless signals transmitted on the selected channel by the mobile station under the applicable configuration. Acceptable channels reducing location estimation error over alternatives include the access channel for Short Message Service (SMS) systems, the reverse pilot channel or the enhanced access channel for IS2000 systems, and the reverse link traffic channel for 1×EV-DO or 1×EV-DV systems. Location estimation is performed on wireless data communications on the selected channel.

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