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公开(公告)号：US20240430947A1
公开(公告)日：2024-12-26
申请号：US18752623
申请日：2024-06-24
Inventor： Chanho YOON , Cheulsoon KIM , Young Jo KO , Yong Sun KIM , Kapseok CHANG
IPC: H04W74/0833 , H04L27/26
Abstract: Proposed is an apparatus and method for increasing the reach area of a random access preamble and uplink data signals in a wireless communication system. An operation method of a transmitter in a wireless communication system may include a process of generating sequences for generating a physical random preamble channel (PRACH) signal, a process of converting the sequences in a frequency domain, a process of dividing the converted sequences into frequency source blocks (RB), a process of allocating the frequency resource blocks to different spatial layers, and a process of transmitting the PRACH signal on the basis of the frequency resource blocks allocated to the spatial layers.
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公开(公告)号：US20240243870A1
公开(公告)日：2024-07-18
申请号：US18398958
申请日：2024-04-04
Inventor： Woo Ram SHIN , Kyeong Pyo KIM , Young Jo KO , Kap Seok CHANG
CPC classification number: H04L5/005 , H04L25/0224
Abstract: A method of a terminal, for channel estimation in a communication system, may comprise: receiving configuration information of a block reference signal from a base station; receiving a modulated data channel including the block reference signal according to the configuration information; and demodulating the block reference signal in the received data channel to estimate a channel for resources in a two-dimensional domain, to which the block reference signal is allocated.
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公开(公告)号：US20220407594A1
公开(公告)日：2022-12-22
申请号：US17892024
申请日：2022-08-19
Inventor： Kap Seok CHANG , Il Gyu KIM , Hyeong Geun PARK , Young Jo KO , Hyo Seok Yl , Chan Bok JEONG , Young Hoon KIM , Seung Chan BANG
Abstract: The present application relates to a method of generating a downlink frame. The method of generating the downlink frame includes: generating a first short sequence and a second short sequence indicating cell group information; generating a first scrambling sequence and a second scrambling sequence determined by the primary synchronization signal; generating a third scrambling sequence determined by the first short sequence and a fourth scrambling sequence determined by the second short sequence; scrambling the short sequences with the respective scrambling sequences; and mapping the secondary synchronization signal that includes the first short sequence scrambled with the first scrambling sequence, the second short sequence scrambled with the second scrambling sequence and the third scrambling sequence, the second short sequence scrambled with the first scrambling sequence and the first short sequence scrambled by the second scrambling sequence and the fourth scrambling sequence to a frequency domain.
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公开(公告)号：US20220240203A1
公开(公告)日：2022-07-28
申请号：US17719398
申请日：2022-04-13
Inventor： Il Gyu KIM , Hyeong Geun PARK , Young Jo KO , Kapseok CHANG , Hyo Seok YI , Young Hoon KIM , Seung Chan BANG
Abstract: A method of searching a cell in a mobile station of a communication system in which a plurality of cells are grouped into a plurality of cell groups, each cell group including at least two cells, includes: detecting a primary synchronization signal and a secondary synchronization signal from a received signal; and identifying a cell based on a combination of the primary synchronization signal and the secondary synchronization signal. The secondary synchronization signal is related to the cell group to which the mobile station belongs and the primary synchronization signal is related to the cell to which the mobile station belongs within the cell group.
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35.发明申请公开(公告)号：US20220150974A1
公开(公告)日：2022-05-12
申请号：US17517526
申请日：2021-11-02
Inventor： Yong Sun KIM , Kap Seok CHANG , Young Jo KO
IPC: H04W74/08
Abstract: An operation method of a terminal in a communication system may comprise: receiving, from a first base station, information on preambles for random access; transmitting, to the first base station, a first message including a preamble selected based on the information on the preambles; receiving, from the first base station, a second message that is a response signal for the first message; transmitting, to the first base station, a third message requesting a preemptive use of the selected preamble during a first preemptive use period; and receiving, from the first base station, a fourth message allowing the preemptive use of the selected preamble during the first preemptive use period, and performing a random access procedure by using the selected preamble during the first preemptive use period.
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Patent Agency Ranking
公开(公告)号：US20220150873A1
公开(公告)日：2022-05-12
申请号：US17518455
申请日：2021-11-03
Inventor： Kap Seok CHANG , Yong Sun KIM , Young Jo KO
Abstract: An operation method of a terminal in a communication system may comprise: receiving, from a base station, information on a command period of a sub-frame, information on an action period of the sub-frame, and information on a report period of the sub-frame; receiving, from the base station, a command in the command period; performing an action according to the received command in the action period; and reporting, to the base station, a result according to the action in the report period.
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公开(公告)号：US20210037554A1
公开(公告)日：2021-02-04
申请号：US17043758
申请日：2019-04-04
Inventor： Cheul Soon KIM , Gi Yoon PARK , Seung Kwon BAEK , Young Jo KO
Abstract: A method and an apparatus for uplink transmission in a communication system. An operation method of a terminal includes: receiving, from a base station, first SFI information indicating n flexible symbol(s); receiving, from the base station, second SFI information re-indicating m symbol(s) of the n flexible symbol(s) as uplink (UL) symbol(s); and transmitting an SRS to the base station through the m symbol(s) re-indicated as a UL symbol among the n flexible symbol(s) indicated as a flexible symbol. Therefore, performance of the communication system can be improved.
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38.发明申请公开(公告)号：US20200383074A1
公开(公告)日：2020-12-03
申请号：US16884498
申请日：2020-05-27
Inventor： Kap Seok CHANG , Young Jo KO , Yong Sun KIM , Sang Ho LEE
IPC: H04W56/00
Abstract: Disclosed are a method and an apparatus for transmitting and receiving a synchronization signal in a communication system. According to an exemplary embodiment of the present disclosure, a method of transmitting a first synchronization signal, performed by a base station in the communication system, may comprise generating a base sequence; generating a modified sequence by inverting polarity of the base sequence; mapping the base sequence and the modified sequence to a first frequency region having a frequency higher than a center subcarrier and a second frequency region having a frequency lower the center subcarrier, so that the base sequence and the modified sequence are symmetric centering the center subcarrier located at a center frequency of a frequency domain of the synchronization signal; and transmitting the synchronization signal comprising the base sequence and the modified sequence to a terminal. Therefore, performance of the communication system can be improved.
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公开(公告)号：US20190140775A1
公开(公告)日：2019-05-09
申请号：US16094317
申请日：2017-05-18
Inventor： Chanho YOON , Young Jo KO , Seung-Kwon BAEK
Abstract: A terminal receives allocation of a unique first identifier of the terminal from a base station. The terminal generates first uplink data. The terminal applies interleaving based on the first identifier to the first uplink data to generate second uplink data.
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公开(公告)号：US20170142743A1
公开(公告)日：2017-05-18
申请号：US15317098
申请日：2016-04-29
Inventor： Chanho YOON , Young Jo KO , Seung-Kwon BAEK , Eunkyung KIM
CPC classification number: H04W72/1215 , H04L1/00 , H04L5/00 , H04L5/0048 , H04L27/26 , H04L27/2613 , H04W28/26 , H04W56/00 , H04W72/0446 , H04W74/0808 , H04W84/04
Abstract: There is provided a method for transmitting, by a transmitter, a signal through an unlicensed band channel. The transmitter transmits an initial signal through the unlicensed band channel to preoccupy the unlicensed band channel when the unlicensed band channel is in an idle status. The transmitter includes a first partial subframe transmitted after the initial signal in a frame burst depending to transmission timing of the initial signal. Further, the transmitter transmits the frame burst through the unlicensed band channel.
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