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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：US11696222B2
公开(公告)日：2023-07-04
申请号：US17313984
申请日：2021-05-06
Inventor： Sung Hyun Hwang , Igor Kim , Seung Keun Park
Abstract: A method and a device for searching for an access point in a wireless LAN are disclosed. An operating method of a station comprising a PCR and a WUR comprises the steps of: allowing the WUR operating in a wake up state to receive a WUR beacon frame from an access point; shifting an operating state of the PCR from a sleep state to the wake up state, when the WUR beacon frame is received; and allowing the PCR operating in the wake up state to communicate with the access point. Therefore, the performance of a communication system can be improved.
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公开(公告)号：US11172448B2
公开(公告)日：2021-11-09
申请号：US16612329
申请日：2018-05-08
Inventor： Sung Hyun Hwang , Seung Keun Park , Yong Ho Kim
Abstract: An operation method of a communication node for supporting a low power mode in a wireless LAN is disclosed. A method for operating an access point comprises: a step of transmitting a CTS frame to protect transmission of a wake-up packet, a step of transmitting the wake-up packet to wake up a station including PCR and WURx; and a step of transmitting a data frame to the station. Therefore, the performance of the communication system can be improved.
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公开(公告)号：US11153818B2
公开(公告)日：2021-10-19
申请号：US16341857
申请日：2017-10-12
Inventor： Sung Hyun Hwang , Igor Kim , Seung Keun Park
IPC: H04W52/04 , H04W52/02 , H04L5/00 , H04L12/24 , H04W12/069 , H04W84/12 , H04W88/08 , H04W12/73 , H04W12/76
Abstract: Disclosed are a method and an apparatus for initial negotiation in a wireless LAN. An operating method of a station in a communication system comprises the steps of: generating a probe request frame including WUR capability information of the station which supports a WUR mode; transmitting the probe request frame; and receiving a probe response frame from an access point having received the probe request frame. Therefore, the performance of the communication system can be improved.
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公开(公告)号：US11032758B2
公开(公告)日：2021-06-08
申请号：US16331123
申请日：2017-09-06
Inventor： Sung Hyun Hwang , Igor Kim , Seung Keun Park
Abstract: A method and a device for searching for an access point in a wireless LAN are disclosed. An operating method of a station comprising a PCR and a WUR comprises the steps of: allowing the WUR operating in a wake up state to receive a WUR beacon frame from an access point; shifting an operating state of the PCR from a sleep state to the wake up state, when the WUR beacon frame is received; and allowing the PCR operating in the wake up state to communicate with the access point. Therefore, the performance of a communication system can be improved.
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Patent Agency Ranking
26.发明授权公开(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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28.发明授权公开(公告)号：US10727979B2
公开(公告)日：2020-07-28
申请号：US15234121
申请日：2016-08-11
Inventor： Jung Sun Um , Hoi Yoon Jung , Sung Jin Yoo , Seung Keun Park
Abstract: Disclosed are operation methods of a communication node in a network supporting licensed and unlicensed bands. An operation method of a user equipment (UE) may comprises receiving, from a base station, a physical downlink control channel (PDCCH) including downlink control information (DCI) in a subframe n−1 of an unlicensed band; decoding the DCI using a common radio network temporary identifier (RNTI); and identifying the number of symbols of the subframe n−1 or a subframe n based on the decoded DCI. Therefore, a performance of the network can be enhanced.
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公开(公告)号：US10701752B2
公开(公告)日：2020-06-30
申请号：US15562005
申请日：2016-01-28
Inventor： Jung Sun Um , Kyu Min Kang , Seung Keun Park , Jae Cheol Park , Sung Jin Yoo , Dong Hun Lee , Hoi Yoon Jung , Su Na Choi , Sung Hyun Hwang
Abstract: The present invention relates to a device and method for allocating a coexistence resource in an unlicensed band. The device according to the present invention comprises: a frame configuration unit for configuring a subframe in which data and a reference signal for a channel in an unlicensed band are allocated, and allocating a part of the symbols of the subframe as a coexistence resource; a signal detection unit for detecting a signal of another LTE system or Wi-Fi system during a transmission idle period where the coexistence resource is allocated; and a transmission processing unit which, when the signal of another system is detected during the transmission idle period, does not occupy a resource for the next subframe, and when the occupation of the coexistence resource by the another system has ended, occupies the resource for the next subframe.
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公开(公告)号：US09906246B2
公开(公告)日：2018-02-27
申请号：US15356397
申请日：2016-11-18
Inventor： Kyu Min Kang , Seung Keun Park , Jae Cheol Park
CPC classification number: H04B1/1027 , H04L27/265 , H04W24/08
Abstract: The present disclosure provides apparatuses or methods for detecting a PIM generation point, which can enhance the accuracy of the PIM generation point detection up to a level of 10 centimeters, and thus enable rapid replacement or maintenance of a disfunctional element causing the PIM by installing and controlling a time delay module in an output end of a reference signal (or, a PIM signal) for detection of the PIM generation point.
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