US 11,754,660 B2
Offline radio maps for crowdsourced GNSS rescue areas
Petri Rauhala, Tampere (FI); Lauri Aarne Johannes Wirola, Tampere (FI); and Marko Luomi, Tampere (FI)
Assigned to HERE GLOBAL B.V., Eindhoven (NL)
Filed by HERE GLOBAL B.V., Eindhoven (NL)
Filed on Dec. 3, 2021, as Appl. No. 17/541,723.
Prior Publication US 2023/0176166 A1, Jun. 8, 2023
Int. Cl. G01S 19/48 (2010.01); G01S 5/00 (2006.01); G01S 5/02 (2010.01); G01S 19/17 (2010.01)
CPC G01S 5/013 (2020.05) [G01S 5/011 (2020.05); G01S 5/012 (2020.05); G01S 5/02521 (2020.05); G01S 5/02523 (2020.05); G01S 5/02526 (2020.05); G01S 19/17 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
receiving, by at least one positioning server from a plurality of mobile devices, information indicating a plurality of Global Navigation Satellite System (GNSS) rescue areas, wherein each respective GNSS rescue area of the plurality of GNSS rescue areas corresponds to a respective geographic area visited by a respective one of the plurality of mobile devices in which (i) at least one GNSS-based position estimate is or was unavailable and (ii) the respective mobile device had demand for positioning data of at least a pre-defined accuracy level;
generating, by the at least one positioning server, a GNSS rescue map representing radio data for the plurality of GNSS rescue areas; and
transmitting, by the at least one positioning server to a first mobile device, an offline radio map representing a subset of the GNSS rescue map, to provide radio data for at least one of the plurality of GNSS rescue areas or portion thereof in accordance with the subset.