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1.发明申请公开(公告)号：US20210105334A1
公开(公告)日：2021-04-08
申请号：US16842375
申请日：2020-04-07
Inventor： Wan Choi , Dongyeon Ko , Junil Choi
IPC: H04L29/08
Abstract: Disclosed are an electronic device and an operating method thereof. The electronic device and operating method are configured to detect the number for splitting one piece of content and allowing a plurality of edge nodes to split and store at least some of packets split from the content based on the number. Detecting the number may be performed based on an average amount of storage of the edge nodes for the content.
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2.发明授权公开(公告)号：US11936502B2
公开(公告)日：2024-03-19
申请号：US17919425
申请日：2021-04-16
Inventor： Yongyun Choi , Hwanjin Kim , Chulhee Jang , Junil Choi
CPC classification number: H04L25/0204 , H04L25/0222 , H04W64/006
Abstract: Disclosed is a method for estimating a channel of a terminal by a base station in a wireless communication system supporting multiple antennas, the method comprising the steps of: estimating a moving speed of the terminal on the basis of a first channel value acquired at a current time point and a second channel value acquired at a previous time point; determining, on the basis of the estimated moving speed, a complexity degree corresponding to the number of channel values for multiple time points including the current time point; and estimating a channel of the terminal at a next time point on the basis of the determined complexity degree.
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3.发明授权公开(公告)号：US11870872B2
公开(公告)日：2024-01-09
申请号：US16842375
申请日：2020-04-07
Inventor： Wan Choi , Dongyeon Ko , Junil Choi
IPC: H04L67/568
CPC classification number: H04L67/568
Abstract: Disclosed are an electronic device and an operating method thereof. The electronic device and operating method are configured to detect the number for splitting one piece of content and allowing a plurality of edge nodes to split and store at least some of packets split from the content based on the number. Detecting the number may be performed based on an average amount of storage of the edge nodes for the content.
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公开(公告)号：US20220353116A1
公开(公告)日：2022-11-03
申请号：US17529362
申请日：2021-11-18
Inventor： Junil Choi , Jihoon Cha
Abstract: A method for detecting on-off keying symbols includes receiving, by each of distributed Rx nodes, a pilot signal for a pilot symbol transmitted from a transmitter, the distributed Rx nodes constituting the wireless body area communication network, obtaining, by each of the Rx nodes, a reference value using the received pilot signal, transmitting, by each of the Rx nodes, received data signal to a fusion center when the data signal for the on-off keying symbol transmitted from the transmitter is received by each of the Rx nodes, calculating, by the fusion center, a weight of the on-off keying symbol for each of the Rx nodes using the reference value obtained from each of the Rx nodes and the received data signal, and detecting, by the fusion center, the on-off keying symbol transmitted from the transmitter using the weight of the on-off keying symbol calculated for each of the Rx nodes.
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公开(公告)号：US11201694B2
公开(公告)日：2021-12-14
申请号：US16878826
申请日：2020-05-20
Inventor： Wan Choi , Jinkyu Lee , Junil Choi
Abstract: A method and apparatus for optimizing average bit error probability via a deep multi-armed bandit in an orthogonal-frequency division multiplexing and index modulation system for low power communication are proposed. The method proposed in the present invention comprises: detecting BPSK symbols and subcarriers among all subcarriers; defining a combination of selected subcarriers as a subcarrier selection pattern; selecting the subcarrier selection pattern through learning to minimize the average bit error probability for all combinations of selected subcarriers; and updating a learning parameter of the subcarrier selection pattern selected through learning.
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Patent Agency Ranking
公开(公告)号：US12040833B2
公开(公告)日：2024-07-16
申请号：US17578538
申请日：2022-01-19
Inventor： Junil Choi , Geonho Han , Hyuckjin Choi , Beomsoo Ko
IPC: H04B10/116 , H04B10/532 , H04B10/61 , H04J14/06
CPC classification number: H04B10/116 , H04B10/532 , H04B10/6151 , H04J14/06
Abstract: A method and an apparatus for polarization multiplexing and encoding in a visible light communication system based on a gold nanoparticle are provided. A method for encoding in a receiver using a polarizing characteristic in a visible light communication system based on a gold nanoparticle, which is performed by a computer device, includes splitting a receive signal into left circular polarization light and right circular polarization light by allowing the receive signal to pass through a linear polarizer and estimating a phase retardation difference, and detecting a transmit symbol by estimating the phase retardation difference.
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7.发明授权公开(公告)号：US11855730B2
公开(公告)日：2023-12-26
申请号：US17703379
申请日：2022-03-24
Inventor： Yongyun Choi , Chulhee Jang , Hyeongtaek Lee , Junil Choi , Hwanjin Kim
CPC classification number: H04B7/0634 , H04B7/086 , H04L5/0048 , H04W72/23 , H04W72/54
Abstract: The disclosure relates to a 5th generation (5G) or pre-5G communication system for supporting a higher data rate after a 4th generation (4G) communication systems such as long term evolution (LTE). The disclosure is for reconstructing a downlink channel in a wireless communication system. An operation method for a base station is provided. The operation method includes the steps of transmitting downlink reference signals (RSs) to a terminal, receiving an indication of a first channel matrix estimated by the terminal and at least one uplink RS; estimating a second channel matrix on the basis of the at least one uplink RS, and on the basis of the first channel matrix and the second channel matrix, reconstructing channel information to be used for data transmission.
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公开(公告)号：US20230095744A1
公开(公告)日：2023-03-30
申请号：US17578538
申请日：2022-01-19
Inventor： Junil Choi , Geonho Han , Hyuckjin Choi , Beomsoo Ko
IPC: H04B10/116 , H04B10/532 , H04J14/06 , H04B10/61
Abstract: A method and an apparatus for polarization multiplexing and encoding in a visible light communication system based on a gold nanoparticle are provided. A method for encoding in a receiver using a polarizing characteristic in a visible light communication system based on a gold nanoparticle, which is performed by a computer device, includes splitting a receive signal into left circular polarization light and right circular polarization light by allowing the receive signal to pass through a linear polarizer and estimating a phase retardation difference, and detecting a transmit symbol by estimating the phase retardation difference.
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公开(公告)号：US11563606B2
公开(公告)日：2023-01-24
申请号：US17529362
申请日：2021-11-18
Inventor： Junil Choi , Jihoon Cha
Abstract: A method for detecting on-off keying symbols includes receiving, by each of distributed Rx nodes, a pilot signal for a pilot symbol transmitted from a transmitter, the distributed Rx nodes constituting the wireless body area communication network, obtaining, by each of the Rx nodes, a reference value using the received pilot signal, transmitting, by each of the Rx nodes, received data signal to a fusion center when the data signal for the on-off keying symbol transmitted from the transmitter is received by each of the Rx nodes, calculating, by the fusion center, a weight of the on-off keying symbol for each of the Rx nodes using the reference value obtained from each of the Rx nodes and the received data signal, and detecting, by the fusion center, the on-off keying symbol transmitted from the transmitter using the weight of the on-off keying symbol calculated for each of the Rx nodes.
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10.发明授权公开(公告)号：US11515928B2
公开(公告)日：2022-11-29
申请号：US17178515
申请日：2021-02-18
Inventor： Junil Choi , Hyesang Cho
IPC: H04B7/06 , H04B7/145 , H04B7/0426
Abstract: An integrated beamforming method using intelligent reflecting surface (IRS) element allocation and a system thereof are disclosed. The integrated beamforming method includes allocating passive elements of an intelligent reflecting surface (IRS) to each of receivers, setting phase shifts of the IRS where the passive elements are allocated to each of the receivers, and performing transmit beamforming using the set phase shifts of the IRS.
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