-
公开(公告)号：US09867071B2
公开(公告)日：2018-01-09
申请号：US14750556
申请日：2015-06-25
Inventor： Sung Jin Yoo , Jung Sun Um , Byung Jang Jeong , Sung Hyun Hwang
CPC classification number: H04W24/08 , H04L1/00 , H04L1/08 , H04W72/0453
Abstract: A wireless communication method may include performing, by a first system, channel monitoring of a first band, detecting a second system that uses the first band, determining whether the first system is to be used in preference to the second system, and allocating a radio resource of the first band to the first system based on whether the first system is to be used in preference to the second system.
-
公开(公告)号：US12066526B2
公开(公告)日：2024-08-20
申请号：US17557831
申请日：2021-12-21
Inventor： Hyung Ju Kim , Sung Jin Yoo , Byung Jang Jeong , Woo Jin Byun , In Kui Cho
CPC classification number: G01S13/882 , G01S7/418 , G01S13/003 , G01S13/424
Abstract: A method for calculating an altitude of a target through an apparatus for calculating an altitude of the target, which comprises a plurality of MIMO radar virtual antennas, may comprise: receiving electromagnetic waves reflected from the target through a pair of virtual antennas classified into an upper antenna and a lower antenna and alternately arranged in two columns linearly; obtaining range information and phase information of the target from the pair of virtual antennas by analyzing the electromagnetic waves; and calculating altitude information of the target from position information of the pair of virtual antennas, and the range information and the phase information.
-
公开(公告)号：US11044747B2
公开(公告)日：2021-06-22
申请号：US15770838
申请日：2017-02-03
Inventor： Jung Sun Um , Hoi Yoon Jung , Seung Keun Park , Sung Jin Yoo
Abstract: Disclosed is a method for scheduling an uplink transmission in a communication network. A terminal operation method comprises the steps of: detecting a control channel of a subframe #n transmitted from a base station; receiving an uplink grant from the control channel; and transmitting, to the base station, a plurality of subframes scheduled by the uplink grant. Thus, the performance of the communication network may be improved.
-
4.发明授权Method of communicating between base station and terminal based on interference alignment in multi-cell multi-user multiple-input multiple-output (MIMO) interference channel and method and apparatus of communication using interference alignment and block successive interference pre-cancellation in multi-user multiple-input multiple-output interference channel 有权基于多小区多用户多输入多输出（MIMO）干扰信道中的干扰对准的基站和终端之间的通信方法以及在多用户中使用干扰对准和块连续干扰预取消的通信方法和装置 多输入多输出干扰信道公开(公告)号：US09236922B2
公开(公告)日：2016-01-12
申请号：US13845760
申请日：2013-03-18
Inventor： Jae Hyun Park , Sung Jin Yoo , Myung Sun Song , Byung Jang Jeong , Jae Ick Choi
CPC classification number: H04B7/0456
Abstract: A communication method of a base station and a terminal based on interference alignment in a multi-cell multi-user multiple-input multiple-output (MIMO) interference channel and a method and apparatus of communication using interference alignment and block successive interference pre-cancellation in a multi-user MIMO interference channel. The base station may determine a precoding matrix to maximize a signal to interference and noise ratio (SINR) and a signal to leakage and noise ratio (SLNR) in the interference channel, and a terminal communicating with the base station may determine a decoding matrix to align interference. The transmitter including a multicell interference channel may calculate a rotation matrix for interference alignment, identify effective symbol vectors using the rotation matrix, and generate a transmit signal of a target transmitter to pre-cancel interference corresponding to a transmit signal of a neighboring transmitter.
Abstract translation: 基于多小区多用户多输入多输出（MIMO）干扰信道中的干扰对准的基站和终端的通信方法以及使用干扰对准和块连续干扰预取消的通信的方法和装置 在多用户MIMO干扰信道中。 基站可以确定预编码矩阵以使干扰信道中的信号与干扰和噪声比（SINR）以及信号与泄漏和噪声比（SLNR）最大化，并且与基站通信的终端可以确定解码矩阵 对准干扰。 包括多小区干扰信道的发射机可以计算用于干扰对准的旋转矩阵，使用旋转矩阵识别有效符号向量，并且生成目标发射机的发射信号以预先抵消与相邻发射机的发射信号相对应的干扰。
-
公开(公告)号：US11567184B2
公开(公告)日：2023-01-31
申请号：US16550086
申请日：2019-08-23
Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , PUKYONG NATIONAL UNIVERSITY INDUSTRY-UNIVERSITY COOPERATION FOUNDATION
Inventor： Sung Hyun Hwang , Woo Jin Byun , Sung Jin Yoo , Jae Hyun Park
IPC: G01S13/58 , G01S13/93 , G01S7/35 , G01S13/931
Abstract: An operation method performed by an apparatus for detecting multiple targets may comprise transmitting first signals using Mt transmit antennas included in the apparatus; receiving the first signals reflected by the multiple targets through Mr receive antennas included in the apparatus; generating a first function for estimating a velocity and an azimuth of each of the multiple targets using the first signals and the reflected first signals; estimating a velocity and an azimuth that maximize a result of the first function as a velocity and an azimuth of a first target closest to the apparatus among the multiple targets; generating a second function by cancelling interference caused by the first target from the first function; and estimating a velocity and an azimuth that maximize a result of the second function as a velocity and an azimuth of a second target among the multiple targets.
-
Patent Agency Ranking
公开(公告)号：US10932294B2
公开(公告)日：2021-02-23
申请号：US15565141
申请日：2016-03-15
Inventor： Jung Sun Um , Sung Jin Yoo , Hoi Yoon Jung , Seung Keun Park
Abstract: The present invention relates to a method for transmitting uplink data in a spectrum sharing wireless communication system wherein, in order to enhance uplink transmission efficiency in an LTE-U service, clear channel assessment (CCA) is performed on a user terminal so as to consider the hidden node problem, and channel occupation based on an uplink signal of another terminal is considered, wherein applied are: a method for generating and transmitting a random backoff counter value at a base station so that all terminals can equally use a channel connection parameter needed for transmitting an uplink subframe in an unlicensed band; and a downlink controlling method for scheduling an uplink multi-subframe.
-
公开(公告)号：US10856328B2
公开(公告)日：2020-12-01
申请号：US15771490
申请日：2017-02-01
Inventor： Jung Sun Um , Hoi Yoon Jung , Seung Keun Park , Sung Jin Yoo
IPC: H04W74/08 , H04L5/00 , H04L27/00 , H04L27/26 , H04W16/14 , H04W48/10 , H04W72/10 , H04W72/12 , H04W84/12 , H04W72/04
Abstract: Disclosed is a method for communicating in a network supporting licensed and unlicensed bands. A terminal operation method comprises the steps of: detecting a control channel of a subframe #n transmitted from a base station; obtaining, from the control channel, a DCI for an uplink grant; executing channel sensing on the basis of channel connection-related information included in the DCI; and transmitting, to the base station, a subframe #(n+1) if the result of executing channel sensing is an idle state. Thus, the performance of the communication network may be improved.
-
8.发明授权公开(公告)号：US10727979B2
公开(公告)日：2020-07-28
申请号：US15234121
申请日：2016-08-11
Inventor： Jung Sun Um , Hoi Yoon Jung , Sung Jin Yoo , Seung Keun Park
Abstract: Disclosed are operation methods of a communication node in a network supporting licensed and unlicensed bands. An operation method of a user equipment (UE) may comprises receiving, from a base station, a physical downlink control channel (PDCCH) including downlink control information (DCI) in a subframe n−1 of an unlicensed band; decoding the DCI using a common radio network temporary identifier (RNTI); and identifying the number of symbols of the subframe n−1 or a subframe n based on the decoded DCI. Therefore, a performance of the network can be enhanced.
-
公开(公告)号：US10701752B2
公开(公告)日：2020-06-30
申请号：US15562005
申请日：2016-01-28
Inventor： Jung Sun Um , Kyu Min Kang , Seung Keun Park , Jae Cheol Park , Sung Jin Yoo , Dong Hun Lee , Hoi Yoon Jung , Su Na Choi , Sung Hyun Hwang
Abstract: The present invention relates to a device and method for allocating a coexistence resource in an unlicensed band. The device according to the present invention comprises: a frame configuration unit for configuring a subframe in which data and a reference signal for a channel in an unlicensed band are allocated, and allocating a part of the symbols of the subframe as a coexistence resource; a signal detection unit for detecting a signal of another LTE system or Wi-Fi system during a transmission idle period where the coexistence resource is allocated; and a transmission processing unit which, when the signal of another system is detected during the transmission idle period, does not occupy a resource for the next subframe, and when the occupation of the coexistence resource by the another system has ended, occupies the resource for the next subframe.
-
公开(公告)号：US11134444B2
公开(公告)日：2021-09-28
申请号：US16506831
申请日：2019-07-09
Inventor： Sung Hyun Hwang , Kyu Min Kang , Sung Jin Yoo , Su Na Choi , Jae Cheol Park , Yong Ho Kim
Abstract: Disclosed are a low-power communication method and a low-power communication apparatus in a communication system. A low-power station may comprise a processor; a memory storing at least one instruction executable by the processor; a receiver for receiving a WUR PPDU according to the at least one instruction; and a transceiver for transmitting and receiving a legacy PPDU according to the at least one instruction, and the at least one instruction may be configured to cause the receiver to receive a WUR wake-up frame from the access point in an on-duration within a WUR duty cycle period; when the WUR wake-up frame is received, cause the processor to transmit a first signal requesting wake-up to the transceiver; and when the first signal is received, cause the transceiver to transition from a sleep state to a wake-up state at a TWT configured between the access point and the low-power station.
-
-
-
-
-
-
-
-
-
Search Results
16
records
(took 0.017 seconds)
