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公开(公告)号：US20210385703A1
公开(公告)日：2021-12-09
申请号：US17338575
申请日：2021-06-03
Inventor： Hyun Seo PARK , Yun Joo KIM , Eunkyung KIM , Tae Joong KIM , An Seok LEE , Yu Ro LEE , Heesoo LEE
IPC: H04W36/00
Abstract: Disclosed are a method and an apparatus for enhanced conditional handover (CHO). An operation method of a base station may comprise: receiving a measurement report message from a terminal; transmitting a CHO request message to one or more candidate target cells; receiving a CHO request ACK message from the one or more candidate target cells; and transmitting an RRC reconfiguration message including CHO status report configuration information to the terminal, wherein the CHO status report configuration information requests transmission of information for determining a target cell to which terminal is likely to be handed over among the one or more candidate target cells.
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公开(公告)号：US20210159794A1
公开(公告)日：2021-05-27
申请号：US16902349
申请日：2020-06-16
Inventor： Young Kyun CHO , Heon Kook KWON , Kwang Seon KIM , Tae Joong KIM , Kwangchun LEE , Jung Nam LEE , Jae Ho JUNG
IPC: H02M3/158
Abstract: A direct current-to-direct current (DC-DC) converter providing multiple operation modes includes a buck power stage configured to lower an input voltage, a boost power stage configured to increase the input voltage, and a multi-mode controller configured to control the buck power stage and the boost power stage, wherein the multi-mode controller is configured to generate a signal to control the buck power stage and the boost power stage according to the input voltage and an output voltage, and control the buck power stage and the boost power stage using the signal.
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公开(公告)号：US20210036613A1
公开(公告)日：2021-02-04
申请号：US16939567
申请日：2020-07-27
Inventor： Young Kyun CHO , Tae Joong KIM , Kwang Chun LEE , Jung Nam LEE , Jae Ho JUNG
Abstract: 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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14.发明申请公开(公告)号：US20190028938A1
公开(公告)日：2019-01-24
申请号：US16040926
申请日：2018-07-20
Inventor： Hyun Seo PARK , Eun Kyung KIM , Tae Joong KIM , An Seok LEE , Yu Ro LEE , Hyun LEE , Hee Soo LEE
CPC classification number: H04W36/0058 , H04W36/00837 , H04W36/30
Abstract: An operation method of a terminal includes receiving configuration information from a serving base station; measuring channel states of the serving base station and a target base station; when a difference between received signal strengths of the serving base station and the target base station is not less than a handover preparation offset, determining that a handover preparation event has occurred and transmitting a measurement report message to the serving base station; and when the difference is equal to or greater than a handover execution offset, determining that a handover execution event has occurred and transmitting a handover indication message informing of execution of a handover to the target base station. The channel state is normal state, abnormal state, or RLF state, and the configuration information indicates a different handover preparation offset and a different handover execution event according to the channel state.
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15.发明申请公开(公告)号：US20180278380A1
公开(公告)日：2018-09-27
申请号：US15934001
申请日：2018-03-23
Inventor： Cheul Soon KIM , Min Hyun KIM , Ji Hyung KIM , Sung Hyun MOON , Ju Ho PARK , Jung Hoon LEE , Tae Joong KIM
CPC classification number: H04L1/1861 , H04L1/08 , H04L1/1671 , H04L1/1812 , H04L1/1854 , H04L1/1858 , H04L5/001 , H04L5/0051 , H04L5/0055 , H04L5/0064 , H04L5/0091 , H04W72/0413
Abstract: 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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Patent Agency Ranking
公开(公告)号：US20180124859A1
公开(公告)日：2018-05-03
申请号：US15800835
申请日：2017-11-01
Inventor： Seung Kwon CHO , Seok Ki KIM , Won Ik KIM , Eun Kyung KIM , Jae Heung KIM , Jae Su SONG , Sung Pil SHIN , Sei Yun SHIN , Mi Young YUN , Soo Jung JUNG , Yun Hee CHO , Tae Joong KIM , Seung Kwon BAEK
CPC classification number: H04W76/12 , H04W8/26 , H04W28/021 , H04W36/0009 , H04W40/246 , H04W56/0025 , H04W84/18 , H04W88/08
Abstract: An operation method of a first communication node, which controls a plurality of communication nodes included in a mobile xhaul network supporting mobility, may comprise performing an attach procedure between the first communication node and a second communication node among the plurality of communication nodes; configuring a path for communications between the second communication node and a third communication node for which attach procedure has been completed among the plurality of communication nodes; and supporting communications of the second communication node and the third communication node using the configured path.
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17.发明申请公开(公告)号：US20140126611A1
公开(公告)日：2014-05-08
申请号：US14047435
申请日：2013-10-07
Inventor： Seung Chan BANG , Jae Ryong SHIM , Ki Chul HAN , Jung Im KIM , Tae Joong KIM
IPC: H04B1/7097
CPC classification number: H04B1/7097 , H04J13/0048 , H04J13/102 , H04J2013/0037
Abstract: An orthogonal complex spreading method for a multichannel and an apparatus thereof are disclosed. The method includes the steps of complex-summing αn1WM,n1Xn1 which is obtained by multiplying an orthogonal Hadamard sequence WM,n1 by a first data Xn1 of a n-th block and αn2WM,n2Xn2 which is obtained by multiplying an orthogonal Hadamard sequence W1,n2 by a second data Xn2 of a n-th block; complex-multiplying αn1WM,n1Xn1+jαn2WM,n2Xn2 which is summed in the complex type and WM,n3+jPWM,n4 of the complex type using a complex multiplier and outputting as an in-phase information and quadrature phase information; and summing only in-phase information outputted from a plurality of blocks and only quadrature phase information outputted therefrom and spreading the same using a spreading code.
Abstract translation: 公开了一种用于多通道的正交复扩展方法及其装置。 该方法包括以下步骤：通过将正交哈达玛序列WM，n1乘以第n个块的第一数据Xn1和αn2WM，通过将正交哈达马列序列W1相乘得到的n2Xn2获得的αn1WM，n1Xn1， n2由第n个块的第二数据Xn2; 使用复数乘法器复合乘以αn1WM，n1Xn1 +jαn2WM，n2Xn2，其以复数类型和WM，n3 + jPWM，n4求和并作为同相信息和正交相位信息输出; 并且仅从多个块输出的同相信息和仅输出的正交相位信息相加，并使用扩展码进行扩展。
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公开(公告)号：US20220030476A1
公开(公告)日：2022-01-27
申请号：US17384703
申请日：2021-07-23
Inventor： Hyun Seo PARK , Yun Joo KIM , Eunkyung KIM , Tae Joong KIM , An Seok LEE , Yu Ro LEE , Heesoo LEE
Abstract: 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：US20210007036A1
公开(公告)日：2021-01-07
申请号：US16916792
申请日：2020-06-30
Inventor： Hyun Seo PARK , Yun Joo KIM , Eunkyung KIM , Tae Joong KIM , An Seok LEE , Yu Ro LEE , Sung Cheol CHANG
Abstract: An operation method of a terminal in a communication system, according to the present disclosure, may comprise performing measurement on a source base station and neighbor base stations, and identifying a state of a radio link established between the terminal and the source base station; predicting a probability of a handover failure based on the state of the radio link and a measurement result according to the measurement; when it is predicted that the handover is to fail, identifying whether a handover command message is received from the source base station; and when the handover command message is not received, performing cell selection for radio connection re-establishment.
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公开(公告)号：US20190223057A1
公开(公告)日：2019-07-18
申请号：US16244450
申请日：2019-01-10
Inventor： Hyun Seo PARK , Eun Kyung KIM , Tae Joong KIM , An Seok LEE , Yu Ro LEE , Hyun LEE , Heesoo LEE
CPC classification number: H04W36/0016 , H04W36/0085 , H04W36/08 , H04W36/26 , H04W36/38 , H04W76/19 , H04W76/27
Abstract: An operation method of a terminal in a communication system includes transmitting a measurement report message of each of one or more neighbor base stations to a source base station, the one or more neighbor base stations satisfying a handover (HO) preparation event; receiving, from the source base station, a conditional HO command message of each of at least one of neighbor base stations among the one or more neighbor base stations; determining a target base station based on priority of a neighbor base station which satisfies a HO execution event among the at least one of neighbor base stations; and performing a handover with the target base station.
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