1
Rashidus S Mia, Robert J Anderson: Sparsed U-TDOA wireless location networks. TruePosition, Woodcock Washburn, August 14, 2012: US08242959 (141 worldwide citation)

In an overlay, U-TDOA-based, Wireless Location System, LMUs typically co-located with BTSs, are used to collect radio signaling both in the forward and reverse channels. Techniques are used to compensate for sparse LMU deployments where sections of the U-TDOA service area are uplink demodulation or ...


2
Jeffrey F Bull, Rashidus S Mia, Robert J Anderson, Matthew L Ward: Emergency wireless location system including a location determining receiver. TruePosition, Woodcock Washburn, December 7, 2010: US07848733 (34 worldwide citation)

A wireless location system may include geolocation of a wireless device connected to Voice-over-Internet-Protocol (VoIP) adapter. The VoIP adapter may include a wireless transceiver or a wireless location determining receiver that facilitates the location of a wireless device connected to the VoIP a ...


3
Robert J Anderson, Rashidus S Mia, Matthew L Ward: Femto-cell location by direct methods. TruePosition, Woodcock Washburn, May 15, 2012: US08180368 (16 worldwide citation)

Illustrative embodiments of the inventive subject matter described herein include, but are not limited to, the following: a femto-cell device, methods for use by a wireless location system (WLS) in locating a femto-cell device, and a wireless location system having certain features relating to the l ...


4
Pete A Boyer, Ronald LeFever, Rashidus S Mia, Robert J Anderson: Hybrid GNSS and TDOA wireless location system. TruePosition, Woodcock Washburn, November 15, 2011: US08059028 (15 worldwide citation)

A method and apparatus for position determination is provided using measurements from both Global Positioning System (GPS) receivers and terrestrial-based Uplink Time Difference of Arrival (UTDOA) receivers. The method involves the transformation of downlink satellite measurements into equivalent UT ...


5
Rashidus S Mia, Robert J Anderson, Matthew L Ward: Emergency wireless location system including a wireless transceiver. TruePosition, Woodcock Washburn, August 30, 2011: US08010079 (12 worldwide citation)

A wireless location system may include geolocation of a wireless device connected to Voice-over-Internet-Protocol (VoIP) adapter. The VoIP adapter may include a wireless transceiver or a wireless location determining receiver that facilitates the location of a wireless device connected to the VoIP a ...


6
Rashidus S Mia, Robert J Anderson, Matthew L Ward: Femto-cell location by proxy methods. TruePosition, Woodcock Washburn, June 12, 2012: US08200239 (11 worldwide citation)

Location of small, consumer deployed femto-cells cannot be determined by the usual site survey methods. Location of attached mobiles allows for a proxy location of the femto-cell that can then be used for wireless network planning including the provisioning of a calculated default emergency services ...


7
Ronald LeFever, Rashidus S Mia, Robert J Anderson: Detection of time of arrival of CDMA signals in a wireless location system. TruePosition, Woodcock Washburn, February 23, 2010: US07667649 (9 worldwide citation)

In a Wireless Location System (WLS) deployed in connection with a CDMA-based wireless communications system, Location Measurement Units are used to collect multi-path corrupted radio signaling for use in time difference of arrival (TDOA) and hybrid positioning methods. Signal processing techniques a ...


8
Rashidus S Mia, Robert J Anderson: Use of radio access technology diversity for location. TruePosition, Woodcock Washburn, July 5, 2011: US07974627 (8 worldwide citation)

Various aspects are disclosed herein for determining a location estimate for multi-mode mobile devices using measurements from one or more radio access technologies and providing a combined location solution. Using the multiple radio access technology capability of the wireless communications system ...


9
Ronald LeFever, Rashidus S Mia, Robert J Anderson: Variable coherence integration for the location of weak signals. TruePosition, Woodcock Washburn, April 12, 2011: US07924224 (7 worldwide citation)

In a network-based Wireless Location System (WLS), geographically distributed Location Measurement Units (LMUs) must be able to detect and use reverse channel (mobile to network) signals across multiple BTS coverage areas. By using Matched Replica correlation processing with the local and reference ...


10
Pete A Boyer, Rashidus S Mia, Edward Joseph Segall: Method for position estimation using generalized error distributions. TruePosition, Woodcock Washburn, March 20, 2012: US08138976 (7 worldwide citation)

A method for improving the results of radio location systems that incorporate weighted least squares optimization generalizes the weighted least squares method by using maximum a posteriori (MAP) probability metrics to incorporate characteristics of the specific positioning problem (e.g., UTDOA). We ...