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公开(公告)号：US11792667B2
公开(公告)日：2023-10-17
申请号：US17564495
申请日：2021-12-29
发明人： Wooram Shin , Kyeongpyo Kim , Young-Jo Ko , Kapseok Chang
CPC分类号： H04W24/08 , H04B1/69 , H04L5/0048 , H04W72/23
摘要： An operation method of a base station in a communication system may include: performing an operation for channel measurement between the base station and a terminal; determining a size of multiple spreading resource blocks configured in a second two-dimensional (2D) domain based on a result of the channel measurement; transmitting information indicating the size of the multiple spreading resource blocks to the terminal; and performing a communication procedure with the terminal based on the multiple spreading resource blocks having the size.
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公开(公告)号：US11363547B2
公开(公告)日：2022-06-14
申请号：US16114224
申请日：2018-08-28
发明人： Il Gyu Kim , Hyeong Geun Park , Young Jo Ko , Kapseok Chang , Hyo Seok Yi , Young Hoon Kim , Seung Chan Bang
摘要： 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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公开(公告)号：US11330540B2
公开(公告)日：2022-05-10
申请号：US16114224
申请日：2018-08-28
发明人： Il Gyu Kim , Hyeong Geun Park , Young Jo Ko , Kapseok Chang , Hyo Seok Yi , Young Hoon Kim , Seung Chan Bang
摘要： 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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公开(公告)号：US10039068B2
公开(公告)日：2018-07-31
申请号：US14702117
申请日：2015-05-01
发明人： Byung-Jae Kwak , Kapseok Chang , June-Koo Rhee , Junhyuk Kim
IPC分类号： H04W56/00 , H04L12/807 , H04L12/64
CPC分类号： H04W56/001 , H04L12/6418 , H04L47/27
摘要： A method of synchronization in a distributed wireless communication system and a terminal supporting the same are disclosed. A terminal increases its contention window value if it receives a synchronization signal within a synchronization slot. The terminal decreases its contention window value if it receives no synchronization signal within the synchronization slot. The terminal determines whether to transmit a synchronization signal or not by using the increased or decreased contention window value.
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5.发明授权公开(公告)号：US09699747B2
公开(公告)日：2017-07-04
申请号：US14852375
申请日：2015-09-11
发明人： Byung-Jae Kwak , Kapseok Chang , June-Koo Rhee , Junhyuk Kim , Kyounghye Kim
IPC分类号： H04J3/06 , H04W56/00 , H04L12/807 , H04W72/00
CPC分类号： H04W56/001 , H04L47/27 , H04W72/00
摘要： Disclosed is a synchronization method in a distributed wireless communication system and a terminal supporting the same. In a synchronization method, a terminal splits a synchronization period into a plurality of backoff slots and randomly selects a backoff counter using the contention window. Furthermore, the terminal checks whether a channel is idle during at least one of the plurality of backoff slots and changes the backoff counter based on a result of the check.
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公开(公告)号：US10972325B2
公开(公告)日：2021-04-06
申请号：US16685507
申请日：2019-11-15
发明人： Kapseok Chang , Wooyong Lee , Hyun-Kyu Chung
摘要： Disclosed is a technique related to a method and apparatus for generating a preamble and a data frame for wireless communication, and to a synchronization estimation method using the preamble. According to the technique, a method for generating a frame for wireless communication is disclosed, wherein the method comprises: a step of generating a modified sequence using a first base sequence for synchronization estimation; and a step of allocating the first base sequence and the modified sequence to the frequency domain of a first timeslot to generate a preamble. The modified sequence includes a complex conjugated sequence of the first base sequence or a sequence having a code different from that of the first base sequence.
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公开(公告)号：US20200084077A1
公开(公告)日：2020-03-12
申请号：US16685507
申请日：2019-11-15
发明人： Kapseok Chang , Wooyong Lee , Hyun-Kyu Chung
摘要： Disclosed is a technique related to a method and apparatus for generating a preamble and a data frame for wireless communication, and to a synchronization estimation method using the preamble. According to the technique, a method for generating a frame for wireless communication is disclosed, wherein the method comprises: a step of generating a modified sequence using a first base sequence for synchronization estimation; and a step of allocating the first base sequence and the modified sequence to the frequency domain of a first timeslot to generate a preamble. The modified sequence includes a complex conjugated sequence of the first base sequence or a sequence having a code different from that of the first base sequence.
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公开(公告)号：US09860864B2
公开(公告)日：2018-01-02
申请号：US14656169
申请日：2015-03-12
发明人： Byung-Jae Kwak , Kapseok Chang , June-Koo Rhee , Junhyuk Kim
CPC分类号： H04W56/0055 , H04W52/0209 , Y02D70/00
摘要： Disclosed herein are a method of performing synchronization in a distributed wireless communication system, and a terminal supporting the same. A distributed wireless communication system includes a plurality of networks. Time resources of each of a plurality of networks are divided into a synchronization slot, a discovery slot, a peering slot, and a data slot. A first terminal belonging to a first network determines whether a synchronization signal is received from a terminal belonging to a second network in the data slot of the first network. The first terminal detects whether it has met the second network that is out of synchronization with the first network if the synchronization signal is determined to have been received.
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公开(公告)号：US09265045B2
公开(公告)日：2016-02-16
申请号：US14463703
申请日：2014-08-20
发明人： Sung-Geun Jin , Kapseok Chang , Hyoung Jin Kwon , Woo Yong Lee , Hyun Kyu Chung
CPC分类号： H04W56/0065 , H04L65/4076 , H04W4/80 , H04W56/0075 , H04W72/0446 , H04W74/00 , H04W84/12 , H04W88/02
摘要： Disclosed is a method for adjusting a transmission time point of at least one second terminal in a wireless network by a first terminal. In the method for adjusting a transmission time point of a terminal, a transmission time point of the second terminal is set, a first frame including information regarding the transmission time point is transmitted to the second terminal, a first response frame transmitted according to the transmission time point from the second terminal is received, and the transmission time point is adjusted according to an arrival time of the first response frame.
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公开(公告)号：US11848807B2
公开(公告)日：2023-12-19
申请号：US17221464
申请日：2021-04-02
发明人： Kapseok Chang , Wooyong Lee , Hyun-Kyu Chung
CPC分类号： H04L27/261 , H04L27/2613 , H04L27/2692 , H04W56/0085 , H04W72/04 , H04W84/12
摘要： Disclosed is a technique related to a method and apparatus for generating a preamble and a data frame for wireless communication, and to a synchronization estimation method using the preamble. According to the technique, a method for generating a frame for wireless communication is disclosed, wherein the method comprises: a step of generating a modified sequence using a first base sequence for synchronization estimation; and a step of allocating the first base sequence and the modified sequence to the frequency domain of a first timeslot to generate a preamble. The modified sequence includes a complex conjugated sequence of the first base sequence or a sequence having a code different from that of the first base sequence.
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