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公开(公告)号：US11510214B2
公开(公告)日：2022-11-22
申请号：US17186245
申请日：2021-02-26
Inventor： Jung Sun Um , Bong-Su Kim , Igor Kim , Seung Keun Park
Abstract: A method of generating shared information includes determining an attenuation effect on transmission power of a new radio station due to a reception mask of an existing radio station, calculating an interference effect of the existing radio station due to the new radio station using the attenuation effect, determining a protection domain of the existing radio station according to the interference effect, and generating shared information to be used by the new radio station based on the protection domain, wherein the protection domain is a domain in which a frequency available to the new radio station is restricted.
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公开(公告)号：US11140690B2
公开(公告)日：2021-10-05
申请号：US15771362
申请日：2017-01-26
Inventor： Jung Sun Um , Hoiyoon Jung , Sungjin Yoo , Seung Keun Park
Abstract: A method for transmitting an uplink signal in an unlicensed band by a terminal is provided. The terminal receives first scheduling information that schedules one or more uplink subframes, from a base station in a first downlink subframe. The terminal receives second scheduling information that determines a transmission time point of the uplink signal, from the base station in a second downlink subframe after the first downlink subframe. The terminal transmits the uplink signal in a first uplink subframe corresponding to the transmission time point among the one or more uplink subframes.
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公开(公告)号：US11050506B2
公开(公告)日：2021-06-29
申请号：US16275096
申请日：2019-02-13
Inventor： Jung Sun Um , Igor Kim , Seung Keun Park , Hyeyeon Kwon , Yunbae Kim , Young Hwan Lee
Abstract: An apparatus for analyzing a frequency use status may obtain a candidate radio network temporary identifier (RNTI) using downlink control information (DCI), estimate an active RNTI from the candidate RNTI, and analyze a frequency use status using the active RNTI.
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公开(公告)号：US11044747B2
公开(公告)日：2021-06-22
申请号：US15770838
申请日：2017-02-03
Inventor： Jung Sun Um , Hoi Yoon Jung , Seung Keun Park , Sung Jin Yoo
Abstract: Disclosed is a method for scheduling an uplink transmission in a communication network. A terminal operation method comprises the steps of: detecting a control channel of a subframe #n transmitted from a base station; receiving an uplink grant from the control channel; and transmitting, to the base station, a plurality of subframes scheduled by the uplink grant. Thus, the performance of the communication network may be improved.
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公开(公告)号：US09814078B2
公开(公告)日：2017-11-07
申请号：US15065602
申请日：2016-03-09
Inventor： Seung Keun Park , Sungjin Yoo , Jung Sun Um , Hoiyoon Jung , Hyung Do Choi
CPC classification number: H04W74/085 , H04W84/12
Abstract: A wireless device of a communication system randomly selects a backoff counter at a contention window interval corresponding to a contention window size that is determined according to a backoff stage, attempts packet transmission, when the backoff counter becomes 0 while reducing the backoff counter, when a radio channel is in an idle status, and increases the contention window size while increasing the backoff stage by 1 according to a first predetermined condition. In this case, as the backoff stage increases, a contention window size has a concave down increasing form.
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Patent Agency Ranking
公开(公告)号：US10925085B2
公开(公告)日：2021-02-16
申请号：US15769897
申请日：2016-12-28
Inventor： Jung Sun Um , Hoiyoon Jung , Seung Keun Park , Sungjin Yoo
IPC: H04W72/14 , H04L5/00 , H04L27/26 , H04L27/00 , H04W72/12 , H04W16/14 , H04W72/04 , H04W84/12 , H04W74/08 , H04L25/02
Abstract: Disclosed herein is a method for transmitting, by a terminal, a sounding reference signal (SRS). The terminal receives a grant for uplink multiple subframes from a base station. The terminal determines a first subframe for an SRS transmission of the terminal among the uplink multiple subframes on the basis of SRS transmission position information received from the base station. Further, the terminal transmits the SRS in the first subframe.
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公开(公告)号：US09900889B2
公开(公告)日：2018-02-20
申请号：US14976276
申请日：2015-12-21
Inventor： Hoi Yoon Jung , Jung Sun Um , Byung Jang Jeong , Hyung Do Choi
CPC classification number: H04W72/0446 , H04L1/1812 , H04L5/0055 , H04L29/08306 , H04W4/70 , H04W72/02
Abstract: Disclosed is a method for allocating a resource of a terminal. The method includes: receiving downlink data from a base station; and allocating a resource for a device-to-device communication to a sub-frame by considering a hybrid ARQ (HARQ) transmission delay with respect to the received downlink data.
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公开(公告)号：US11985685B2
公开(公告)日：2024-05-14
申请号：US18111148
申请日：2023-02-17
Inventor： Jung Sun Um , Hoiyoon Jung , Seung Keun Park , Sungjin Yoo
IPC: H04W72/23 , H04L5/00 , H04L27/00 , H04L27/26 , H04W16/14 , H04W72/0446 , H04L25/02 , H04W74/0808 , H04W84/12
CPC classification number: H04W72/23 , H04L5/0048 , H04L5/005 , H04L5/0051 , H04L5/0053 , H04L27/0006 , H04L27/261 , H04W16/14 , H04W72/0446 , H04L5/0035 , H04L25/0224 , H04W74/0808 , H04W84/12
Abstract: Disclosed herein is a method for transmitting, by a terminal, a sounding reference signal (SRS). The terminal receives a grant for uplink multiple subframes from a base station. The terminal determines a first subframe for an SRS transmission of the terminal among the uplink multiple subframes on the basis of SRS transmission position information received from the base station. Further, the terminal transmits the SRS in the first subframe.
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公开(公告)号：US10932294B2
公开(公告)日：2021-02-23
申请号：US15565141
申请日：2016-03-15
Inventor： Jung Sun Um , Sung Jin Yoo , Hoi Yoon Jung , Seung Keun Park
Abstract: The present invention relates to a method for transmitting uplink data in a spectrum sharing wireless communication system wherein, in order to enhance uplink transmission efficiency in an LTE-U service, clear channel assessment (CCA) is performed on a user terminal so as to consider the hidden node problem, and channel occupation based on an uplink signal of another terminal is considered, wherein applied are: a method for generating and transmitting a random backoff counter value at a base station so that all terminals can equally use a channel connection parameter needed for transmitting an uplink subframe in an unlicensed band; and a downlink controlling method for scheduling an uplink multi-subframe.
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公开(公告)号：US10856328B2
公开(公告)日：2020-12-01
申请号：US15771490
申请日：2017-02-01
Inventor： Jung Sun Um , Hoi Yoon Jung , Seung Keun Park , Sung Jin Yoo
IPC: H04W74/08 , H04L5/00 , H04L27/00 , H04L27/26 , H04W16/14 , H04W48/10 , H04W72/10 , H04W72/12 , H04W84/12 , H04W72/04
Abstract: Disclosed is a method for communicating in a network supporting licensed and unlicensed bands. A terminal operation method comprises the steps of: detecting a control channel of a subframe #n transmitted from a base station; obtaining, from the control channel, a DCI for an uplink grant; executing channel sensing on the basis of channel connection-related information included in the DCI; and transmitting, to the base station, a subframe #(n+1) if the result of executing channel sensing is an idle state. Thus, the performance of the communication network may be improved.
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