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公开(公告)号：US11438055B2
公开(公告)日：2022-09-06
申请号：US16933392
申请日：2020-07-20
Inventor： Inkyu Lee , Su Bin Eom
Abstract: Provided is a method where mobile relay performs bidirectional inter-terminal communication in wireless communication system. The method includes determining optimal values of predetermined variables for maximizing a transmission ratio for the bidirectional inter-terminal communication during a predetermined time segment using pieces of basic information of at least one of the mobile relay, a first terminal, or a second terminal, transmitting setting information on the optimal values to at least one of the first terminal and the second terminal, and performing the bidirectional inter-terminal communication on the basis of the optimal values. The predetermined variables include at least one of a position of the mobile relay, a speed of the mobile relay, acceleration of the mobile relay, a downlink transmission power of the mobile relay, an uplink transmission power of the first terminal, an uplink transmission power of the second terminal, or a transmission resource allocation ratio for uplink and downlink.
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2.发明申请公开(公告)号：US20220240198A1
公开(公告)日：2022-07-28
申请号：US17381351
申请日：2021-07-21
Inventor： Inkyu Lee , Sang Hyun Lee , Min Tae Kim
Abstract: The present disclosure relates to a method and an apparatus of controlling base station power in a distributive manner in a wireless communication system. A method according to an embodiment of the present disclosure may include determining ui indicating a turn-on or turn-off state of an i-th base station based on mutual message passing with an adjacent base station in the i-th base station among B base stations; determining xia indicating whether a signal is transmitted to an a-th terminal among N terminals from the i-th base station; and obtaining an optimized value of the ui and the xia which minimize total energy consumption consumed by the B base stations and simultaneously, maximize a data rate of the B base stations.
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公开(公告)号：US10211897B2
公开(公告)日：2019-02-19
申请号：US15661293
申请日：2017-07-27
Inventor： Inkyu Lee , Seokju Jang
IPC: H04L5/14 , H04B7/06 , H04B7/0413 , H04B7/08
Abstract: The present invention relates to a method for selecting transmitting and receiving antennas in a full-duplex MIMO system based on channel information. An embodiment of the present invention provides a method for selecting antennas in a full-duplex MIMO wireless communication system for communication between a first node and a second node. The method may include: calculating the number of transmitting antennas and the number of receiving antennas at a node i having an Ni number of antennas such that Nc has a maximum value, where Nc represents the number of all possible antenna set candidates, N is a natural number of 2 or higher with Ni being the sum of transmitting antennas and receiving antennas at said node i, and i is 1 or 2; and determining transmitting antennas and receiving antennas at node i in consideration of the transmission rate.
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公开(公告)号：US10063260B2
公开(公告)日：2018-08-28
申请号：US15638065
申请日：2017-06-29
Inventor： Chanhong Kim , Inkyu Lee , Hoon Lee , Ji Hwan Moon , Tae Seok Oh , Seok Ju Jang
CPC classification number: H03M13/2906 , H03M13/05 , H03M13/1137 , H04L1/0058 , H04L1/0606 , H04L1/0643 , H04L1/0681
Abstract: The present disclosure relates to a pre-5th-generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-generation (4G) communication system such as long term evolution (LTE). Disclosed are an apparatus and a method for a permutation of a block code in a wireless communication system. A method of operating a transmitting node in a wireless communication system includes: determining a permutation matrix according to a block code scheme; generating symbols corresponding to a plurality of antennas based on the block code scheme and the permutation matrix; and transmitting the symbols to a receiving node through the plurality of antennas. The permutation matrix is determined based on a number of blocks and an arrangement structure of the plurality of antennas, and the number of blocks comprises a number of sub-blocks within a code block corresponding to the permutation matrix.
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公开(公告)号：US09621233B2
公开(公告)日：2017-04-11
申请号：US14436442
申请日：2013-10-16
Inventor： Kwang Won Lee , Inkyu Lee , Min Ki An , Kil-Bom Lee
IPC: H04B15/00 , H04B7/024 , H04B7/0452 , H04W16/28 , H04L1/00
CPC classification number: H04B7/024 , H04B7/0452 , H04L1/0026 , H04L1/0033 , H04W16/28
Abstract: Provided are a method and apparatus for user equipment (UE) selection in a mobile communication system. The method may include: selecting the n−1th UE in multiple cells (n: constant ≧2); and selecting a UE with the maximum weighted sum rate (WSR) as the nth UE from among UEs belonging to the remaining cells excluding those cells containing the 1st to n−1th UEs. Hence, the scheduling function enabling suitable user equipment selection may further increase overall system throughput by providing additional gains in addition to beamforming, i.e. further reducing inter-cell interference and increasing signal strength toward a desired user equipment.
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Patent Agency Ranking
公开(公告)号：US11621591B2
公开(公告)日：2023-04-04
申请号：US17284867
申请日：2019-05-07
Inventor： Inkyu Lee , Seokju Jang
IPC: H02J50/23 , H02J50/40 , H04B17/336 , H04B7/06
Abstract: A beamforming method in a simultaneous wireless information and power transfer system and an apparatus therefor may derive a transmission signal transmitted to a plurality of information users and a plurality of energy users from a base station having an NT (here, NT is a natural number) number of antennas included in each cell, derive a SINR (Signal to Interference plus Noise Ratio) of an ith (here, i is a natural number) information user by using a noise power of the ith (here, i is a natural number) information user included in a mth (here, m is a natural number) cell, derive a harvested power of a jth (here, j is a natural number) energy user included in the mth (here, m is a natural number) cell, and perform beamforming by using a transmission signal power at the base station and a total harvested power of the plurality of energy users receiving a transmission signal from the base station. Accordingly, it is possible to improve the effect of minimizing the transmission power of the base station and maximizing the harvested power of the energy users while satisfying the QoS (Quality of Service) and transmission power limitation of the information users.
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公开(公告)号：US20180006666A1
公开(公告)日：2018-01-04
申请号：US15638065
申请日：2017-06-29
Inventor： Chanhong Kim , Inkyu Lee , Hoon Lee , Ji Hwan Moon , Tae Seok Oh , Seok Ju Jang
CPC classification number: H03M13/2906 , H03M13/05 , H03M13/1137 , H04L1/0058 , H04L1/0606 , H04L1/0643 , H04L1/0681
Abstract: The present disclosure relates to a pre-5th-generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-generation (4G) communication system such as long term evolution (LTE). Disclosed are an apparatus and a method for a permutation of a block code in a wireless communication system. A method of operating a transmitting node in a wireless communication system includes: determining a permutation matrix according to a block code scheme; generating symbols corresponding to a plurality of antennas based on the block code scheme and the permutation matrix; and transmitting the symbols to a receiving node through the plurality of antennas. The permutation matrix is determined based on a number of blocks and an arrangement structure of the plurality of antennas, and the number of blocks comprises a number of sub-blocks within a code block corresponding to the permutation matrix.
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公开(公告)号：US09660714B2
公开(公告)日：2017-05-23
申请号：US14304789
申请日：2014-06-13
Inventor： Inkyu Lee , Haewook Park , Changick Song
CPC classification number: H04B7/0639 , H04B7/0417 , H04B7/155
Abstract: One or more embodiments provide an apparatus and a method to estimate channel information even when channel information is not accurately known and design a relay filter based on the estimated information in a two-way relay system where a terminal having a single antenna and a relay exist. A relay apparatus of a two-way relay system includes a receiver, a controller, and a transmitter. The receiver receives a signal from at least one terminal. The controller estimates a channel between the terminals based on the received signal, and calculates a receiver matrix and a precoder. The transmitter transmits a signal precoded by the precoder.
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公开(公告)号：US10523302B2
公开(公告)日：2019-12-31
申请号：US15763002
申请日：2016-09-23
Inventor： Inkyu Lee , Jong-Ho Oh , Bong-Jin Kim , Tae-Yeong Kim , Min-Ki Ahn , Tae-Seok Oh , Seok-Ju Jang
IPC: H04B7/06 , H04B7/04 , H04B7/08 , H04B7/0491
Abstract: The present invention relates to a 5th-generation (5G) or pre-5G communication system which is provided for supporting a higher data transfer rate after a 4th-generation (4G) communication system such as a long term evolution (LTE). The present invention provides a method for selecting, by an access point (AP), a beam in a communication system supporting a beamforming scheme, the method comprising: a step of transmitting information which indicates whether or not a duplicated beacon transmission interval (BTI) is operated; and a step of performing a transmit sector sweep (TXSS) process at least twice during the duplicated BTI.
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10.发明授权公开(公告)号：US11722239B2
公开(公告)日：2023-08-08
申请号：US17290374
申请日：2019-05-21
Inventor： Inkyu Lee , Jihwan Moon
IPC: H04K3/00
CPC classification number: H04K3/65 , H04K3/825 , H04K2203/34
Abstract: A monitoring system using cooperative jamming and spoofing according to an embodiment of the present disclosure includes a spoofing relay to amplify and relay an illegal signal detected from an illegal transmitter according to a preset amplification coefficient, a cooperative jammer to transmit a jamming signal for changing the quality of a communication channel to an illegal receiver with a preset transmit power, and a monitor to calculate the amplification coefficient and the transmit power so that an information monitoring amount is maximum based on the illegal signal received from the spoofing relay.
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