US 12,265,171 B2
Mobile signal based building footprints
Shawn Spooner, Beaverton, OR (US); and Chen Chen, Lake Oswego, OR (US)
Assigned to Billups LLC, Lake Oswego, OR (US)
Filed by BILLUPS, INC., Lake Oswego, OR (US)
Filed on Jan. 24, 2024, as Appl. No. 18/421,391.
Application 18/421,391 is a continuation of application No. 17/951,717, filed on Sep. 23, 2022, granted, now 11,914,065.
Application 17/951,717 is a continuation of application No. 16/714,115, filed on Dec. 13, 2019, granted, now 11,486,960, issued on Nov. 1, 2022.
Prior Publication US 2024/0159860 A1, May 16, 2024
Int. Cl. G01S 5/14 (2006.01); G01S 5/02 (2010.01); H04W 4/02 (2018.01); H04W 4/029 (2018.01); H04W 4/33 (2018.01); H04W 8/08 (2009.01); H04W 64/00 (2009.01)
CPC G01S 5/145 (2013.01) [G01S 5/0273 (2013.01); H04W 4/023 (2013.01); H04W 4/029 (2018.02); H04W 4/33 (2018.02); H04W 8/08 (2013.01); H04W 64/003 (2013.01); H04W 64/006 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system comprising:
a model datastore configured to store a spatial processing model; and
spatial processing circuitry configured to:
obtain a position accuracy for a mobile device at multiple instants in time;
based on the position accuracy of the mobile device at the multiple instants in time, determine a change in the position accuracy of the mobile device;
receive place data characterizing a target building in an environment of the mobile device; and
estimate a building footprint for the target building by applying the spatial processing model to the change in the position accuracy of the mobile device and to the place data,
where the spatial processing model is configured to infer a distance change of the mobile device relative to the target building based on the change in the position accuracy.