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1.发明授权公开(公告)号：US10728905B2
公开(公告)日：2020-07-28
申请号：US16395980
申请日：2019-04-26
发明人： Sang Min Lee , Tak Ki Yu , Yung Soo Kim
摘要： A method for mitigating interference at a small base station in a hierarchical cell structure is provided. In the method, the small base station checks a sub-frame allocated to macro user equipment by using a downlink signal received from a macro base station when an interference candidate user equipment list is received. The interference candidate user equipment list contains information on the macro user equipment adjacent to a femto cell controlled by the small base station. Then the small base station allocates other sub-frame to femto user equipment located in the femto cell by avoiding the sub-frame allocated to the macro user equipment.
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2.发明授权公开(公告)号：US11382053B2
公开(公告)日：2022-07-05
申请号：US16758177
申请日：2018-10-24
发明人： Yung Soo Kim
IPC分类号： H04W56/00 , H04L43/0864 , H04W24/08
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). An operating method of a base station in a wireless communication system includes: transmitting, to at least one node, information related to a transmission time for time synchronization of a wireless backhaul signal and a wireless access signal related to the base station; receiving, from the at least one node, at least one signal transmitted in accordance with the transmission time; and removing, from the at least one signal, interference between the wireless backhaul signal and the wireless access signal. The at least one signal includes the wireless backhaul signal and/or the wireless access signal.
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3.发明授权公开(公告)号：US09860904B2
公开(公告)日：2018-01-02
申请号：US15344984
申请日：2016-11-07
发明人： Sang Min Lee , Tak Ki Yu , Yung Soo Kim
CPC分类号： H04W72/082 , H04W16/32 , H04W24/08 , H04W72/042 , H04W72/0433 , H04W72/0446 , H04W88/08
摘要： A method for mitigating interference at a small base station in a hierarchical cell structure is provided. In the method, the small base station checks a sub-frame allocated to macro user equipment by using a downlink signal received from a macro base station when an interference candidate user equipment list is received. The interference candidate user equipment list contains information on the macro user equipment adjacent to a femto cell controlled by the small base station. Then the small base station allocates other sub-frame to femto user equipment located in the femto cell by avoiding the sub-frame allocated to the macro user equipment.
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4.发明授权公开(公告)号：US10278191B2
公开(公告)日：2019-04-30
申请号：US15852358
申请日：2017-12-22
发明人： Sang Min Lee , Tak Ki Yu , Yung Soo Kim
摘要： A method for mitigating interference at a small base station in a hierarchical cell structure is provided. In the method, the small base station checks a sub-frame allocated to macro user equipment by using a downlink signal received from a macro base station when an interference candidate user equipment list is received. The interference candidate user equipment list contains information on the macro user equipment adjacent to a femto cell controlled by the small base station. Then the small base station allocates other sub-frame to femto user equipment located in the femto cell by avoiding the sub-frame allocated to the macro user equipment.
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5.发明授权公开(公告)号：US09614594B2
公开(公告)日：2017-04-04
申请号：US13677660
申请日：2012-11-15
发明人： Yung Soo Kim
IPC分类号： H04W4/00 , H04B7/0408 , H04L5/00 , H04B7/06 , H04B7/0417
CPC分类号： H04B7/0408 , H04B7/0417 , H04B7/0456 , H04B7/0617 , H04B7/0691 , H04L5/0023 , H04L5/0042 , H04W72/10
摘要： A method for transmitting a signal in a multi-antenna system is provided. The method includes designating an analog beam to a plurality of generated modulation symbol sequences corresponding to a plurality of antenna ports, for each antenna port of the plurality, multiplexing signals, to which a beam is designated by the beam assignment, to a plurality of beam groups each having the same antenna beam combination, mapping beam group signals generated by the beam multiplexing, to at least one Orthogonal Frequency Division Multiplexing (OFDM) symbol and time and frequency resources, generating OFDM symbol signals corresponding to one or more antenna beams by OFDM-converting the beam group signals according to the resource mapping, converting the OFDM symbol signals into analog Radio Frequency (RF) signals, and transmitting the analog RF signals via a plurality of antenna elements by carrying the analog RF signals on associated antenna beams by analog beamforming.
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6.发明授权公开(公告)号：US10469137B2
公开(公告)日：2019-11-05
申请号：US15435843
申请日：2017-02-17
发明人： Yung Soo Kim
IPC分类号： H04B7/0408 , H04B7/0456 , H04L5/00 , H04B7/06 , H04W72/10 , H04B7/0417
摘要： A method for transmitting a signal in a multi-antenna system is provided. The method includes designating an analog beam to a plurality of generated modulation symbol sequences corresponding to a plurality of antenna ports, for each antenna port of the plurality, multiplexing signals, to which a beam is designated by the beam assignment, to a plurality of beam groups each having the same antenna beam combination, mapping beam group signals generated by the beam multiplexing, to at least one Orthogonal Frequency Division Multiplexing (OFDM) symbol and time and frequency resources, generating OFDM symbol signals corresponding to one or more antenna beams by OFDM-converting the beam group signals according to the resource mapping, converting the OFDM symbol signals into analog Radio Frequency (RF) signals, and transmitting the analog RF signals via a plurality of antenna elements by carrying the analog RF signals on associated antenna beams by analog beamforming.
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7.发明授权公开(公告)号：US11122579B2
公开(公告)日：2021-09-14
申请号：US16939827
申请日：2020-07-27
发明人： Sang Min Lee , Tak Ki Yu , Yung Soo Kim
摘要： A method for mitigating interference at a small base station in a hierarchical cell structure is provided. In the method, the small base station checks a sub-frame allocated to macro user equipment by using a downlink signal received from a macro base station when an interference candidate user equipment list is received. The interference candidate user equipment list contains information on the macro user equipment adjacent to a femto cell controlled by the small base station. Then the small base station allocates other sub-frame to femto user equipment located in the femto cell by avoiding the sub-frame allocated to the macro user equipment.
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8.发明授权公开(公告)号：US09491771B2
公开(公告)日：2016-11-08
申请号：US13891567
申请日：2013-05-10
发明人： Sang Min Lee , Tak Ki Yu , Yung Soo Kim
CPC分类号： H04W72/082 , H04W16/32 , H04W24/08 , H04W72/042 , H04W72/0433 , H04W72/0446 , H04W88/08
摘要： A method for mitigating interference at a small base station in a hierarchical cell structure is provided. In the method, the small base station checks a sub-frame allocated to macro user equipment by using a downlink signal received from a macro base station when an interference candidate user equipment list is received. The interference candidate user equipment list contains information on the macro user equipment adjacent to a femto cell controlled by the small base station. Then the small base station allocates other sub-frame to femto user equipment located in the femto cell by avoiding the sub-frame allocated to the macro user equipment.
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