At&t Mobility II LLC

At&t Intellectual Property I, LP

Richard Warburton Davis

Stalin Fernando Albanes

Liaqat Ali

John Mark Dammrose

Lizbet Gonzalez

William S Morris, Iv

Juan Zermeno

Debbie Knittel

An enhanced wireless home phone (WHP) component for use in an emergency call service network is presented herein. A method can include in response to determining that address information representing an address corresponding to a subscriber identity associated with a wireless service has been included in a data store corresponding to an emergency telecommunication service, determining whether a location of a wireless communication device associated with the subscriber identity satisfies a defined condition with respect to a distance of the wireless communication device from the address; and in response to determining that the location of the wireless communication device satisfies the defined condition, and in response to determining that a communication corresponding to the emergency telecommunication service has been received from the wireless communication device, sending the address information directed to a public safety answering point device.

Enhanced wireless home phone for an emergency call service network

Propagation delay offsets of wireless signals are compensated. Compensation is accomplished through determination of an effective wireless signal propagation delay that accounts for signal path delay and propagation delay over the air. Such determination is based at least in part on statistical analysis of accurate location estimates of reference positions throughout a coverage sector or cell, and location estimates of the reference positions generated through time-of-flight (TOF) measurements of wireless signals. Determination of propagation or signal path delay offset also is attained iteratively based at least in part on reference location estimates and TOF location estimates. High-accuracy location estimates such as those obtained through global navigation satellite systems are employed as reference location estimates. Position of probes or wireless beacons, deployed throughout a sector or cell, also are employed as reference locations. Compensation of propagation delay offset improves accuracy of conventional TOF location estimates and radio network performance.

Compensation of propagation delays of wireless signals

System(s) and method(s) for compensation of propagation delay offsets of wireless signals. Compensation is accomplished through determination of an effective wireless signal propagation delay that accounts for signal path delay and propagation delay over the air. Such determination is based at least in part on statistical analysis of accurate location estimates of reference positions throughout a coverage sector or cell, and location estimates of the reference positions generated through time-of-flight (TOF) measurements of wireless signals. Determination of propagation or signal path delay offset also is attained iteratively based at least in part on reference location estimates and TOF location estimates. High-accuracy location estimates such as those obtained through global navigation satellite systems are employed as reference location estimates. Position of probes or wireless beacons, deployed throughout a sector or cell, also are employed as reference locations. Compensation of propagation delay offset improves accuracy of conventional TOF location estimates and radio network performance.

Propagation time for a target signal path is determined by detecting and processing a plurality of unknown signals received at two locations. A third location is established, such that the propagation time between the third location and one of the two locations is known, and the signal path between the third location and the other of the two locations is the target signal path. The two locations are monitored for any signals that may be detected. Signals received at the two locations are processed to determine which signals have a common source, and of the signals having a common source, the signal having the greatest delay between times of reception at the two locations is selected. The selected signal is used to determine the propagation time between the two locations.

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Seattle, WA, United States of America

Richard Warburton Davis