US 12,007,496 B2
Method, apparatus and computer readable storage medium for establishing precise location of a terminal in wireless communication with base stations
Hsuan-Yi Wu, New Taipei (TW); Wen-Rong Wu, Hsinchu (TW); Wei-Han Hsiao, Hsinchu (TW); and Mykola Servetnyk, Hsinchu (TW)
Assigned to HON LIN TECHNOLOGY CO., LTD., Taipei (TW)
Filed by HON LIN TECHNOLOGY CO., LTD., Taipei (TW)
Filed on Jan. 5, 2022, as Appl. No. 17/568,838.
Claims priority of application No. 110148984 (TW), filed on Dec. 27, 2021.
Prior Publication US 2023/0204709 A1, Jun. 29, 2023
Int. Cl. G01S 5/02 (2010.01); G01S 5/10 (2006.01); H04W 4/02 (2018.01); H04W 4/021 (2018.01)
CPC G01S 5/0268 (2013.01) [G01S 5/10 (2013.01); H04W 4/021 (2013.01); H04W 4/023 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A method of establishing location of a mobile terminal, the method comprising:
obtaining indoor environmental information;
receiving a set of data, from a base station, of the mobile terminal;
determining, based on the indoor environmental information and the set of data of the mobile terminal, a line that contains a two-dimensional (2D) planar projection point of the base station, a 2D planar projection point of the mobile terminal, and a scatterer corresponding to the base station;
obtaining positional information of the scatterer, by applying a constraint that the scatterer must be located on the line; and
estimating positional information of the mobile terminal based on the positional information of the base station, the set of data, and the positional information of the scatterer, wherein the positional information of the mobile terminal is estimated by applying a constrained iterative weighted least-squares method.