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公开(公告)号：US11621791B2
公开(公告)日：2023-04-04
申请号：US17333910
申请日：2021-05-28
Inventor： Ju-Il Jeon , Young-Su Cho , Myung-In Ji
IPC: H04B17/391 , H04W72/0453 , H04B7/06 , H04B17/27 , H04L5/00
Abstract: Disclosed herein are an apparatus and method for precise positioning based on deep learning. The method performed by the apparatus includes setting a collection location and a collection environment, collecting wireless signal data based on the collection location and the collection environment, generating a magnitude map image for training from the wireless signal data, and generating a positioning DB model by learning the image characteristics of the magnitude map image for training through deep-learning-based training.
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Patent Agency Ranking
公开(公告)号：US10390179B2
公开(公告)日：2019-08-20
申请号：US15674939
申请日：2017-08-11
Inventor： Myung-In Ji , Young-Su Cho , Joo-Young Kim , Ju-Il Jeon , Sang-Joon Park
Abstract: Disclosed herein are a user-participation data selection apparatus and method for updating a positioning infrastructure DB. The user user-participation data selection apparatus includes a data communication unit for transmitting and receiving user-participation data, a movement path reconstruction unit for reconstructing an entire information movement path corresponding to the user-participation data using all information included in the user-participation data, a reliability calculation unit for calculating reliability corresponding to the entire information movement path, and a data selection unit for selecting update-use data for updating a positioning infrastructure DB based on the reliability.
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公开(公告)号：US09843644B2
公开(公告)日：2017-12-12
申请号：US15225139
申请日：2016-08-01
Inventor： Young-Su Cho , Joo-Young Kim , Ju-Il Jeon , Myung-In Ji
CPC classification number: H04L67/22 , H04L43/08 , H04L43/0876 , H04L67/16 , H04W4/02
Abstract: A user participation-based measurement information utilization system and a user participation-based measurement information utilization server and method. The user participation-based measurement information utilization server includes a measurement information collection unit for collecting user measurement information corresponding to at least one of sensor information and wireless communication heterogeneous infrastructure measurement information from a terminal of a user, on which a measurement information utilization application is installed, a pattern update unit for updating a user pattern corresponding to the user in a measurement information correlation database (DB) in accordance with the user measurement information based on a time at which the user measurement information is collected, and a service provision unit for providing measurement information utilization service to the user based on one or more similar patterns having a correlation with the user pattern among multiple patterns included in a measurement information list.
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公开(公告)号：US11803580B2
公开(公告)日：2023-10-31
申请号：US17529939
申请日：2021-11-18
Inventor： Young-Su Cho , Ju-Il Jeon , Myung-In Ji
CPC classification number: G06F16/334 , G06N20/00 , H04W4/029
Abstract: Disclosed herein are an apparatus and method for positioning of uncollected points based on machine learning using matching wireless communication infrastructure points. The apparatus includes memory in which at least one program according to an embodiment is recorded and a processor for executing the program. The program may compare collected data acquired from wireless communication infrastructure with positioning data measured by a positioning target terminal and thereby extract matching feature points; create a fingerprint database of global grid cells, including uncollected points, for the extracted feature points in real time; and estimate the optimal composite location of the positioning target terminal based on the created fingerprint database.
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公开(公告)号：US10885071B2
公开(公告)日：2021-01-05
申请号：US15154280
申请日：2016-05-13
Inventor： Joo-Young Kim , Myung-In Ji , Ju-Il Jeon , Young-Su Cho
Abstract: An apparatus for creating a link-type grid fingerprint database includes a collected data processing unit for receiving positioning resource information collected from a link, which represents a path along which a pedestrian can move in an indoor space, and storing the positioning resource information in a collection DB, and a database creation unit for creating a link-type fingerprint database based on the positioning resource information and information about the link, stored in the collection DB, and storing the created link-type grid fingerprint database in a positioning DB.
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6.发明授权公开(公告)号：US10123176B2
公开(公告)日：2018-11-06
申请号：US15401585
申请日：2017-01-09
Inventor： Young-Su Cho , Joo-Young Kim , Ju-Il Jeon , Myung-In Ji
Abstract: Disclosed herein are a location estimation apparatus and method using a combination of different positioning resources. The location estimation apparatus includes a motion model generation unit for generating a motion model corresponding to a state variable of a terminal based on a current time, a weight calculation unit for extracting a dynamic location database (DB) from a location DB based on multiple pieces of measurement information received from the terminal, and calculating a weight proportional to a likelihood of the multiple pieces of measurement information based on the dynamic location DB, and a location estimation unit for estimating a location and direction of the terminal by applying the weight to at least one sample value corresponding to the motion model.
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