US 12,082,147 B2
Line of sight (LoS)/non-line of sight (NLoS) point identification in wireless communication networks using artificial intelligence
Rubayet Shafin, Allen, TX (US); Vishnu Vardhan Ratnam, Plano, TX (US); Hao Chen, Allen, TX (US); Yan Xin, Princeton, NJ (US); and Jianzhong Zhang, Plano, TX (US)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Aug. 27, 2021, as Appl. No. 17/460,022.
Claims priority of provisional application 63/080,400, filed on Sep. 18, 2020.
Prior Publication US 2022/0095267 A1, Mar. 24, 2022
Int. Cl. H04W 64/00 (2009.01); G01S 5/02 (2010.01); G06N 20/00 (2019.01); H04W 24/10 (2009.01)
CPC H04W 64/006 (2013.01) [G01S 5/0218 (2020.05); G06N 20/00 (2019.01); H04W 24/10 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for performing line-of-sight (LoS)/non-line-of-sight (NLoS) filtering, comprising:
collecting, by a base station, from at least one user equipment (UE) operating within a coverage area of the base station, a plurality of measurement reports from the at least one UE, wherein each measurement report of the plurality of measurement reports comprises a measured value of a signal parameter and location information of the at least one UE;
selecting, by the base station, a random forest LoS/NLOS classification model from among multiple LoS/NLOS classification models based on a topography of the coverage area of the base station;
training, by the base station, the selected random forest LoS/NLOS classification model on the plurality of measurement reports by generating multiple decision trees based on randomly selected subsets of a set of input parameters and polling across the decision trees to identify predictive features, wherein the randomly selected subsets of input parameters correspond to parameters contained in the measurement reports;
obtaining, by the base station, a new measurement report from a UE operating at a first location within the coverage area of the base station; and
passing, by the base station, the new measurement report from the UE to the trained random forest LoS/NLOS classification model to obtain a LoS/NLOS classification of the first location of the UE.