Multiple pass location processor

Details Multiple pass location processor Multiple pass location processor

2005-03-29

2005-03-29

Phan, Dao (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Directive

Position indicating

C342S463000

Reexamination Certificate

active

06873290

ABSTRACT:
A multiple pass location processing method, for use in a wireless location system (WLS), comprises identifying a received transmission as requiring multiple pass location processing whereby the WLS produces a first, lower quality location estimate and then subsequently produces a second, higher quality location estimate. The WLS then produces the first location estimate and provides it to a first location application, and then produces the second location estimate. The second location estimate may be a more accurate estimate than the first location estimate and/or of a higher confidence than the first location estimate. This method is suitable, but not limited, for use in connection with locating a wireless transmitter involved in an emergency services call and routing the call to a call center.

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