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1.发明授权公开(公告)号：US11202270B2
公开(公告)日：2021-12-14
申请号：US16771406
申请日：2018-12-13
发明人： Bongjin Kim , Daehoon Kim , Taekyoung Kim , Jongho Oh
摘要： The present disclosure relates to a communication technique that fuses, with IoT technology, a 5G communication system for supporting higher data transmission rates than 4G systems, and a system thereof. The present disclosure can be applied to intelligent services (such as smart home, smart building, smart city, smart car, or connected car, health care, digital education, retail business, security and safety-related services, etc.) on the basis of 5G communication technology and IoT-related technology. The present disclosure relates to a method and an apparatus for performing synchronization using previous synchronization information where the previous synchronization information may be information about synchronization that is lost when the terminal turns off a radio frequency module to enter a low power mode.
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2.发明授权公开(公告)号：US10177941B2
公开(公告)日：2019-01-08
申请号：US15418624
申请日：2017-01-27
发明人： Jongho Oh , Hyoungjin Lim , Jaewon Kim , Hyunkyu Yu , Hyunil Yoo , Kyungwhoon Cheun , Jisung Oh , Kilsik Ha
摘要： Provided are a method and apparatus for estimating and correcting the phase error in 5G or pre-5G communication systems providing much higher data rates compared to existing 4G communication systems including LTE systems. The existing phase error estimation scheme using a cyclic prefix in the time domain may fail to prevent performance degradation due to inter-carrier interference. In the present invention, it is possible to enhance reception performance of the receiver by estimating and correcting the phase error multiple times within a symbol using a time domain signal and by reducing the influence of inter-carrier interference.
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公开(公告)号：US11374643B2
公开(公告)日：2022-06-28
申请号：US16954044
申请日：2019-01-31
发明人： Daehoon Kim , Bongjin Kim , Taekyoung Kim , Jongho Oh , Hyoungjin Lim , Jungju Kim , Eungkuk Nam , Joosung Park , Wonjun Hwang
IPC分类号： H04B7/08
摘要： The present disclosure relates to a communication technique for converging IoT technology with a 5G communication system for supporting a higher data transmission rate beyond a 4G system, and a system therefor. The present disclosure may be applied to an intelligent service (for example, a smart home, a smart building, a smart city, a smart car or connected car, health care, digital education, retail business, a security and safety-related service, etc.) on the basis of 5G communication technology and IoT-related technology. A communication method of a terminal of a mobile communication system, according to one embodiment of the present specification, comprises the steps of: acquiring moving speed information of a terminal; determining a reception beam candidate group on the basis of the moving speed information; and determining a reception beam, in the reception beam candidate group, for receiving a signal.
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公开(公告)号：US11013013B2
公开(公告)日：2021-05-18
申请号：US15103820
申请日：2014-12-11
发明人： Jongho Oh , Ohyun Jo , Sungrok Yoon , Kilsik Ha
IPC分类号： H04W72/08 , H04B7/06 , H04B7/0408 , H04W72/04
摘要： The present invention relates to a method and a device for selecting a beam in a wireless communication system which uses a plurality of antennas such as an array antenna. A method according to one embodiment of the present invention is a method for selecting a transmission beam in a transmission device of a wireless communication device comprising a transmission device having a plurality of transmission array antennas, and a receiving device having receiving array antennas in the same number as the number of transmission array antennas, and the method comprises the steps of: determining antenna pairs by measuring the transmission rate of each of the receiving array antennas of the receiving device, individually for each array antenna; determining the number of transmission array antennas and individual transmission-array-antenna modes so as to transmit data according to the service requirements of data whose transmission is required, when data transmission is required; and transmitting data through the determined transmission array antennas.
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公开(公告)号：US10931482B2
公开(公告)日：2021-02-23
申请号：US16747409
申请日：2020-01-20
发明人： Jongho Oh , Soon Chan Kwon , Daehoon Kim , Taeyeong Kim , Jungmin Yoon
摘要： 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). The present invention relates to a method and apparatus for channel estimation in a wireless communication system. A method for operating a transmitter comprises the operations of: transmitting a first reference signal through a first antenna; and transmitting a second reference signal through a second antenna, wherein the first reference signal includes a first Golay sequence, and the second reference signal includes a second Golay sequence.
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6.发明申请公开(公告)号：US20170214518A1
公开(公告)日：2017-07-27
申请号：US15418624
申请日：2017-01-27
发明人： Jongho Oh , Hyoungjin Lim , Jaewon Kim , Hyunkyu Yu , Hyunil Yoo , Kyungwhoon Cheun , Jisung Oh , Kilsik Ha
CPC分类号： H04L25/03012 , H04L25/0214 , H04L25/022 , H04L25/0228 , H04L27/3872
摘要： Provided are a method and apparatus for estimating and correcting the phase error in 5G or pre-5G communication systems providing much higher data rates compared to existing 4G communication systems including LTE systems. The existing phase error estimation scheme using a cyclic prefix in the time domain may fail to prevent performance degradation due to inter-carrier interference. In the present invention, it is possible to enhance reception performance of the receiver by estimating and correcting the phase error multiple times within a symbol using a time domain signal and by reducing the influence of inter-carrier interference.
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公开(公告)号：US11477801B2
公开(公告)日：2022-10-18
申请号：US17085269
申请日：2020-10-30
发明人： Hyoungjin Lim , Jongho Oh , Wonjun Hwang
IPC分类号： H04W72/12
摘要： A pre-5th-Generation (5G) or 5G communication system for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE) is provided. The device of a radio unit (RU) of a base station in a wireless communication system includes at least one transceiver and at least one processor coupled to the at least one transceiver, wherein the at least one processor is configured to receive a first control message including a section extension field from a digital unit (DU) via a fronthaul interface, identify additional information based on the section extension field, and acquire a beamforming weight based on the additional information, wherein the first control message is configured to schedule a terminal in a control plane.
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公开(公告)号：US11438912B2
公开(公告)日：2022-09-06
申请号：US17085269
申请日：2020-10-30
发明人： Hyoungjin Lim , Jongho Oh , Wonjun Hwang
IPC分类号： H04W72/12
摘要： A pre-5th-Generation (5G) or 5G communication system for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE) is provided. The device of a radio unit (RU) of a base station in a wireless communication system includes at least one transceiver and at least one processor coupled to the at least one transceiver, wherein the at least one processor is configured to receive a first control message including a section extension field from a digital unit (DU) via a fronthaul interface, identify additional information based on the section extension field, and acquire a beamforming weight based on the additional information, wherein the first control message is configured to schedule a terminal in a control plane.
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公开(公告)号：US10763928B2
公开(公告)日：2020-09-01
申请号：US15568631
申请日：2016-04-15
发明人： Jongho Oh , Sunheui Ryoo , Jungmin Yoon , Jung Ju Kim , Donghwi Roh , Sungrok Yoon , Ohyun Jo
摘要： The present invention relates to techniques for a sensor network, machine-to-machine (M2M) communication, machine-type communication (MTC) and internet of things (IoT). The present invention may be applied to said technique-based intelligent services (such as smart home, smart building, smart city, smart or connected car, health care, digital education, retail business, and services associated with security and safety). A transmission apparatus of a wireless communication system according to an embodiment of the present invention comprises: a transmission unit for transmitting a compressed beacon frame by means of a plurality of transmission beams; a receiving unit for receiving information for the optimal transmission beam from among the plurality of transmission beams; and a control unit for controlling beamforming by means of a beam received from a terminal, wherein the data and header are compressed into a single frame in the compressed beacon frame.
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公开(公告)号：US20180091262A1
公开(公告)日：2018-03-29
申请号：US15710257
申请日：2017-09-20
发明人： Doyoung Jung , Sungrok Yoon , Eunyoung Seo , Jongho Oh , Suyoung Park
CPC分类号： H04L1/1812 , H04L1/0006 , H04L1/06 , H04L1/1825 , H04L1/1845 , H04L1/1887 , H04L1/1893 , H04L1/201 , H04W72/0413
摘要： There is provided a method of retransmission for a base station in a wireless communication system supporting beamforming. The method includes transmitting data at least once using a first beam; detecting a link disconnection within a retransmission request interval at the media access control (MAC) layer; determining, when a link disconnection is detected, a second beam; and retransmitting the data using the second beam.
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