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公开(公告)号：US11871287B2
公开(公告)日：2024-01-09
申请号：US17384703
申请日：2021-07-23
发明人： Hyun Seo Park , Yun Joo Kim , Eunkyung Kim , Tae Joong Kim , An Seok Lee , Yu Ro Lee , Heesoo Lee
CPC分类号： H04W36/0058 , H04W36/08
摘要： A handover method of a first terminal in a wireless communication system may comprise: transmitting a first measurement report message to a first cell that is a primary cell (PCell); receiving, from the first cell, one or more first configuration messages for one or more target cells determined according to the first measurement report message; adding each of the one or more target cells as a candidate PCell based on the one or more first configuration messages; and performing data transmission and reception with at least one cell among the first cell and the one or more candidate PCells.
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公开(公告)号：US11039357B2
公开(公告)日：2021-06-15
申请号：US15984159
申请日：2018-05-18
发明人： Hyun Seo Park , Hyun Lee , Tae Joong Kim , Hee Soo Lee , Yu Ro Lee , Eun Kyung Kim , An Seok Lee
摘要： An operation method of a terminal, for a handover in a mobile communication system, may comprise performing measurement on beams of a target base station, and transmitting a measurement result of at least one beam of the target base station to a source base station; receiving, from the source base station, a handover command message including information on at least one RACH resource for the at least one beam; transmitting a handover indication message including information on at least one random access target beam having an order of channel conditions determined based on a latest measurement to the source base station and to the target base station through the source base station; and determining an optimal beam among the at least one random access target beam, and transmitting a RACH to the target base station through a RACH resource allocated to the optimal beam.
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3.发明授权公开(公告)号：US10749640B2
公开(公告)日：2020-08-18
申请号：US15934001
申请日：2018-03-23
发明人： Cheul Soon Kim , Min Hyun Kim , Ji Hyung Kim , Sung Hyun Moon , Ju Ho Park , Jung Hoon Lee , Tae Joong Kim
摘要： An operation method of a terminal in a communication system may comprise receiving a downlink data channel from a base station in a slot # n or a slot # (n−l); receiving a slot format indicator (SFI) indicating a format of a slot # (n+k) in which an uplink control information (UCI) is to be transmitted, from the base station in the slot # n; and transmitting the UCI including a hybrid automatic repeat request (HARQ) response for the downlink data channel to the base station in the slot # (n+k). Here, each of n and k may be an integer equal to or greater than 0, and l may be an integer equal to or greater than 1.
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公开(公告)号：US09661574B2
公开(公告)日：2017-05-23
申请号：US14305946
申请日：2014-06-16
发明人： Tae Joong Kim , Hyun Soon Nam
IPC分类号： H04W52/02
CPC分类号： H04W52/0225 , Y02D70/142 , Y02D70/144 , Y02D70/22
摘要： Provided are a method and system for providing a sleep state in a device accessible to a wired or wireless network. Provided are a method and a system, which dynamically determine the optimal parameter in a sleep state depending on a network characteristic in providing the sleep state to a network-accessible terminal, and thus reduce the period of an active state of the network-accessible terminal, thereby considerably decreasing power consumption. Provided are a method and a system, which do not unnecessarily use a clock in an active state by selecting the optimal clock according to a purpose of transiting from the sleep state to the active state, and thus reduce the period of the active state of the network-accessible terminal, thereby considerably decreasing power consumption.
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公开(公告)号：US12022522B2
公开(公告)日：2024-06-25
申请号：US17422218
申请日：2020-02-10
发明人： Jung Hoon Lee , Jae Heung Kim , Cheul Soon Kim , Tae Joong Kim , Sung Hyun Moon
IPC分类号： H04W74/0833 , H04W16/14 , H04W56/00
CPC分类号： H04W74/0833 , H04W16/14 , H04W56/00
摘要： An operation method of a terminal that receives a DRS in a mobile communication system operating in an unlicensed spectrum includes: receiving an SS/PBCH block included in the DRS; checking at least one monitoring occasion for a PDCCH for receiving RMSI on the basis of a PBCH included in the SS/PBCH; monitoring the at least one monitoring occasion and detecting the PDCCH for receiving the RMSI; and receiving a PDSCH including the RMSI on the basis of the detected PDCCH, wherein the at least one monitoring occasion is set to at least one symbol among symbols in front of the PDSCH and symbols behind the PDSCH. Accordingly, the DRS and data may be reliably transmitted and received in the mobile communication system operating in the unlicensed spectrum.
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公开(公告)号：US11930534B2
公开(公告)日：2024-03-12
申请号：US16963747
申请日：2019-04-10
发明人： Eunkyung Kim , Tae Joong Kim , Hyun Seo Park , An Seok Lee , Yu Ro Lee , Hyun Lee
CPC分类号： H04W74/0833 , H04L1/18
摘要： Disclosed are a method and a device for low latency communication in a communication system. An operation method of a base station comprises the steps of: transmitting first scheduling information of data units, transmitted through A sections in subframe #n, to a terminal through a first control channel in subframe #n; transmitting the data units to the terminal through the A sections; and transmitting second scheduling information of data unit(s), transmitted through B section(s) in subframe #(n+k) following subframe #n, to the terminal through a second control channel in subframe #(n+k). Therefore, the performance of the communication system can be improved.
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公开(公告)号：US11206592B2
公开(公告)日：2021-12-21
申请号：US16848383
申请日：2020-04-14
发明人： Hyun Seo Park , Yun Joo Kim , Eunkyung Kim , Tae Joong Kim , An Seok Lee , Yu Ro Lee , Sung Cheol Chang
摘要： An operation method of a terminal performing handover in a mobile communication system may comprise transmitting packet data convergence protocol (PDCP) downlink reception status information of the terminal and information on a target base station to a source base station; receiving downlink data from a user plane function (UPF) via the source base station based on a first tunnel configured between the source base station and the UPF; receiving downlink data from the UPF via the target base station based on a second tunnel configured by the UPF between the target base station and the UPF by using the PDCP downlink reception status information and the information on the target base station, which are transferred from the source base station; and discarding duplicated-received protocol data units (PDUs) from the source base station and the target base station, and reordering remaining PDUs.
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公开(公告)号：US11139937B2
公开(公告)日：2021-10-05
申请号：US16475828
申请日：2018-01-04
发明人： Cheul Soon Kim , Jun Hwan Lee , Jung Hoon Lee , Ji Hyung Kim , Sung Hyun Moon , Ju Ho Park , Tae Joong Kim , Min Hyun Kim
摘要： The present invention relates to an uplink control information transmission method and device which can improve channel estimation performance of a base station. A terminal operation method for transmitting uplink control information to a base station, according to an embodiment of the present invention, comprises the steps of: receiving, from the base station, resource location information for transmission of a UCI channel; mapping UCI to at least one symbol on the basis of the resource location information, and mapping a reference signal in consideration of frequency selectivity characteristics and time selectivity characteristics of a wireless channel; and transmitting, to the base station, a subframe including the at least one symbol.
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公开(公告)号：US10999035B2
公开(公告)日：2021-05-04
申请号：US16204212
申请日：2018-11-29
发明人： Heesoo Lee , Eun Kyung Kim , Tae Joong Kim , Hyun Seo Park , An Seok Lee , Yu Ro Lee , Hyun Lee
IPC分类号： H04L5/00 , H04B7/0413 , H04B17/336 , H04W72/04
摘要： An operation method of a terminal in a non-orthogonal multiple access (NOMA) based communication system includes receiving information on a NOMA resource sequence allocated by a base station from the base station; and transmitting data to the base station by using a NOMA resource indicated by the information on the NOMA resource sequence in each data symbol or each data symbol group. Also, the NOMA resource sequence may indicate at least one NOMA resource in a NOMA resource set.
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公开(公告)号：US11290014B2
公开(公告)日：2022-03-29
申请号：US16939567
申请日：2020-07-27
发明人： Young Kyun Cho , Tae Joong Kim , Kwang Chun Lee , Jung Nam Lee , Jae Ho Jung
摘要： A boost direct current-to-direct current (DC-DC) converter using a delta-sigma modulator (DSM), the boost DC-DC converter may comprise a boost driving circuit outputting an output voltage to output terminals by boosting an input voltage, a resistance distribution circuit outputting a feedback voltage by distributing the output voltage of the boost driving circuit, a compensator outputting a compensated feedback voltage by compensating for the feedback voltage outputted by the resistance distribution circuit based on a reference voltage, a delta-sigma modulator outputting a digital signal by modulating the compensated feedback voltage and a duty controller outputting a duty control signal for controlling a switching duty of the boost driving circuit by receiving the output of the delta-sigma modulator.
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