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1.发明申请公开(公告)号：US20180262255A1
公开(公告)日：2018-09-13
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 , H04B7/08 , H04B7/0491
CPC classification number: H04B7/0695 , H04B7/0491 , H04B7/0617 , H04B7/088
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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2.发明申请公开(公告)号：US20170201999A1
公开(公告)日：2017-07-13
申请号：US15314437
申请日：2015-04-30
Inventor： Jiwon KANG , Inkyu LEE , Sangrim LEE
IPC: H04W72/08 , H04L5/00 , H04B7/0456
CPC classification number: H04W72/085 , H04B7/0456 , H04B7/06 , H04B7/0617 , H04L5/006 , Y02D70/00 , Y02D70/1224 , Y02D70/1242 , Y02D70/1262 , Y02D70/1264 , Y02D70/142 , Y02D70/146 , Y02D70/444
Abstract: Disclosed is a signal transmission method. The signal transmission method includes the steps of: setting a default value for generating a beamforming vector to be used for precoding; performing a calculation process of an outer layer for determining whether an accuracy of an energy efficiency satisfies a first threshold value range during a dual layer calculation process for maximizing an energy efficiency of a base station; performing a calculation process of an inner layer for calculating a predetermined second threshold value on which deterministic equivalence of a channel gain matrix coverage; generating a beamforming vector on the basis of values used in the calculation process of the outer layer and the calculation process of the inner layer, when the accuracy of the energy efficiency satisfies the first threshold value range in the calculation process of the outer layer; generating a transmission signal using the beamforming vector; and transmitting the generated transmission signal.
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3.发明公开公开(公告)号：US20230216554A1
公开(公告)日：2023-07-06
申请号：US17752095
申请日：2022-05-24
Inventor： Inkyu LEE , ZHILIN FU , Ji Hwan MOON , Sang Won HWANG
IPC: H04B7/0456 , H04B7/06
CPC classification number: H04B7/0456 , H04B7/0639 , H04B7/0626
Abstract: The present disclosure relates to design of a line panel codebook and a method and an apparatus for transmission and reception based on it in a wireless communication system. A method in which a transmitter transmits a precoded signal to a receiver in a wireless communication system according to an embodiment of the present disclosure may include determining one or more codewords and a panel phase factor for each of a plurality of line panels equipped with the transmitter; precoding data which will be transmitted to the receiver based on the determined one or more codewords and a panel phase factor; and transmitting the precoded signal to the receiver.
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4.发明申请公开(公告)号：US20210250068A1
公开(公告)日：2021-08-12
申请号：US16933467
申请日：2020-07-20
Inventor： Inkyu LEE , Jeong Hyeon JANG
IPC: H04B7/0456 , H04B7/06 , G06F17/18 , G06N3/08 , G06N3/04
Abstract: Provided is a feedback method in a wireless communication system according to an embodiment of the present disclosure. The method includes enabling a receiver to acquire a reception signal vector including a channel component and a noise component, enabling the receiver to generate feedback information by performing one or more of the following on the reception signal vector: processing through one or more first layers; processing through a second layer, and processing through a quantization layer, and enabling the receiver to transmit the feedback information to a transmitter. In the feedback method, the quantization includes stochastic binarization.
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公开(公告)号：US20190159222A1
公开(公告)日：2019-05-23
申请号：US16040897
申请日：2018-07-20
Inventor： Inkyu LEE , Jihwan MOON
IPC: H04W72/12 , H04B7/0417 , H04B7/06 , H04B7/0426 , H04W52/34
Abstract: The present invention relates to a method for allocating transfer times of a low degree of complexity for improving physical-layer security in a wireless powered communication network. A method for allocating transfer times in a wireless powered communication network according to an embodiment of the invention can provide a low-complexity method of allocating transfer times that enables physical-layer security in a secure wireless powered communication network (WPCN) using an energy harvesting jammer, and this method can be utilized to establish an energy harvesting communication system that is efficient in terms of information security.
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Patent Agency Ranking
公开(公告)号：US20180131422A1
公开(公告)日：2018-05-10
申请号：US15661293
申请日：2017-07-27
Inventor： Inkyu LEE , Seokju JANG
IPC: H04B7/06 , H04B7/0413 , H04B7/08 , H04L5/14
CPC classification number: H04B7/0608 , H04B7/0413 , H04B7/0691 , H04B7/0805 , H04B7/0874 , H04L5/14
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：US20250039862A1
公开(公告)日：2025-01-30
申请号：US18912933
申请日：2024-10-11
Inventor： Hyungtae KWON , Inkyu LEE , Hongju LEE , Sangeon KIM , Seunghyun MIN
IPC: H04W72/121 , H04W72/542
Abstract: A resource block scheduling method and an electronic device performing the method are disclosed. An electronic device according to various embodiments may comprise: at least one processor, comprising processing circuitry, and a memory electrically connected to at least one processor and storing instructions executable by the processor, wherein at least one processor, individually and/or collectively, is configured to execute the instructions and to:
based on channel quality information indexes (CQIs) relating to a plurality of terminals, acquire achievable rates based on resource blocks being allocated to the plurality of terminals; and input the achievable rates to a trained neural network model to output a schedule for allocation of the resource blocks to the plurality of terminals, and the neural network model is configured to be trained to collect the training CQIs relating to the plurality of terminals, acquire, based on the training CQIs, training achievable rates based on the resource blocks being allocated to the plurality of terminals, and output the schedule, in which the sum of the rates for the plurality of terminals is maximized and fairness indexes for the plurality of terminals satisfy a configured fairness condition, using the input training achievable rates.-
公开(公告)号：US20210409146A1
公开(公告)日：2021-12-30
申请号：US17290374
申请日：2019-05-21
Inventor： Inkyu LEE , Jihwan MOON
IPC: H04K3/00
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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公开(公告)号：US20210399588A1
公开(公告)日：2021-12-23
申请号：US17284867
申请日：2019-05-07
Inventor： Inkyu LEE , Seokju JANG
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：US20250038835A1
公开(公告)日：2025-01-30
申请号：US18785746
申请日：2024-07-26
Inventor： Inkyu LEE , Young-Min JEON , ZHILIN FU
IPC: H04B7/185
Abstract: The present disclosure relates to a method of determining satellite orbital positions and routing for a Low Earth Orbit (LEO) satellite network, and the method calculates a communication throughput in each of a link between the transmitting base station and a satellite deployed on the first orbit, a link between satellites deployed on the first and second orbits, and a link between a satellite deployed on the second orbit and the receiving base station, and calculating a communication throughput in an entire link between the transmitting base station and the receiving base station on the basis of the communication throughput in each link, determines satellite orbital position variables and routing variables for maximizing the communication throughput in the entire link, and determines deployment of satellites on the first and second orbits on the basis of the satellite orbit position variables and routing variables.
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