公开(公告)号：US10924195B2

公开(公告)日：2021-02-16

申请号：US15633825

申请日：2017-06-27

申请人： Polaris Wireless, Inc. ,  Alma Mater Studiorum—Università di Bologna

发明人： Jonathan Shiao-En Lu ,  Vittorio Degli-Esposti ,  Enrico Maria Vitucci

IPC分类号： H04B17/391

摘要： A system and method for ray launching in electromagnetic wave propagation modeling. A data-processing system receives a dataset that is representative of a plurality of structures within an environment. The plurality of structures is defined in the dataset as having a plurality of surfaces. The system then partitions each surface in the plurality of surfaces into a plurality of tiles. The system pre-computes whether i) the reference point of each corresponding tile in each plurality of tiles of each surface is visible or not from ii) the reference point of each possible spawning tile in each other plurality of tiles. The system then projects a first set of ray tubes based on the pre-computed visibility. The system evaluates the incidence of bounced ray tubes at a predetermined receive point within the environment and then presents a propagation result that is based on the evaluated incidence of the bounced ray tubes.

公开(公告)号：US11368813B2

公开(公告)日：2022-06-21

申请号：US16939040

申请日：2020-07-26

申请人： Polaris Wireless, Inc.

发明人： Jonathan Shiao-En Lu

IPC分类号： H04W24/00 ,  H04W4/029 ,  H04W24/10 ,  G01S5/02 ,  H04B17/318 ,  H04W52/24 ,  H04W64/00 ,  G01S11/06 ,  G01S5/00 ,  H04W4/02 ,  H04W48/16

摘要： A location engine uses the empirical measurements made by a scouting wireless terminal (i) to discover the existence of a reference radio within a geographic region; (ii) to generate an estimate of the location of the newly-discovered reference radio, and (iii) to generate an estimate of the transmission power of the downlink control channel radio signal transmitted by the newly-discovered reference radio. The location engine then uses: (i) the estimate of the location of the newly-discovered reference radio, and (ii) the estimate of the transmission power of the downlink control channel radio signal transmitted by the newly-discovered reference radio, and (iii) measurements, made by a user wireless terminal, of the power of each of the downlink control channel radio signals transmitted by each of the reference radios to generate an estimate of the location of the user wireless terminal.