公开(公告)号：US20240168124A1

公开(公告)日：2024-05-23

申请号：US18552231

申请日：2021-03-24

申请人： NOKIA SOLUTIONS AND NETWORKS OY

发明人： Lei NIU

IPC分类号： G01S5/02 ,  G01S5/00 ,  H04B17/318

CPC分类号： G01S5/02525 ,  G01S5/0063 ,  H04B17/328

摘要： A method, apparatus and computer program is described comprising: collecting mobile communication fingerprint data for signals between a user device and a plurality of communication nodes of a mobile communication system; organising the collected data into a feature matrix, wherein the feature matrix includes a user device location associated with each set of fingerprint data; generating a binomial expression of the system based on the collected data; processing the binomial expression (e.g. using a factorisation machine) to generate a reduced dimension binomial expression model; and calculating gradients and updating parameters of the reduced dimensional binomial expression model based on said gradients.