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1.发明申请公开(公告)号：US20210185537A1
公开(公告)日：2021-06-17
申请号：US17124634
申请日：2020-12-17
Inventor： Yongdae KIM , Hojoon YANG , Sangwook BAE , Mincheol SON , Hongil KIM , Song Min KIM
IPC: H04W12/122 , H04W12/106 , H04W72/04 , H04W56/00 , H04L29/06
Abstract: A physical signal overshadowing attack method for an LTE broadcast message and a system thereof are provided. The method includes identifying physical configuration information of user equipment (UE) which is an attack target and manipulating a physical downlink shared channel (PDSCH), a physical downlink control channel (PDCCH), and a physical control format indicator channel (PCFICH) for subframes of the LTE broadcast message transmitted to the UE to form a subframe for attack, synchronizing a time domain and a frequency domain of the subframe for attack depending on the LTE broadcast message, and injecting the synchronized subframe for attack into legitimate subframes of the LTE broadcast message transmitted to the UE and transmitting the injected subframes.
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2.发明公开公开(公告)号：US20230177291A1
公开(公告)日：2023-06-08
申请号：US18073149
申请日：2022-12-01
Inventor： Song Min KIM , Kangmin Bae , Namjo Ahn
IPC: G06K7/10
CPC classification number: G06K7/10366
Abstract: A communication device includes an interrogator configured to output interrogation signals including consecutive unit chirp signals that change from a first frequency to a second frequency, and a backscatter tag configured to receive the interrogation signals and frequency-modulate the interrogation signals to generate and provide tag signals, wherein the interrogator is further configured to receive the tag signals and demodulate the tag signals.
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公开(公告)号：US20240333575A1
公开(公告)日：2024-10-03
申请号：US18733894
申请日：2024-06-05
Inventor： Jin Hwan JUNG , Song Min KIM , Ji Hoon RYOO , Yung YI
Abstract: A gateway includes a modulation scheme conversion device, which includes a backscattering tag and a tag signal generation unit configured to provide a tag signal to the backscattering tag. The modulation scheme conversion device multiplies a radio signal, which has been modulated with a first modulation scheme, and the tag signal to produce a multiplied signal and to reshape the multiplied signal using a second modulation scheme to produce a reshaped signal and backscatters the reshaped signal. The signal, which is reshaped with the second modulation scheme and backscattered, is provided to a receiver of second modulation scheme signals and then provided to the Internet.
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Patent Agency Ranking
公开(公告)号：US20220311454A1
公开(公告)日：2022-09-29
申请号：US17286729
申请日：2020-08-03
Inventor： Woo Jae JEONG , Song Min KIM , Jin Hwan JUNG , Seok Won YANG , Yung YI
Abstract: A wireless device driving method includes hiding a header emulated with a second protocol in a payload of a packet defined with a first protocol and transmitting the emulated header at a transmission side, receiving the emulated header and an ambient signal at a reception side, and decoding the ambient signal according to the second protocol to obtain a bit sequence.
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5.发明公开公开(公告)号：US20240153244A1
公开(公告)日：2024-05-09
申请号：US18088374
申请日：2022-12-23
Inventor： Song Min KIM , Seung Woo SHIM , Hyeon Ho SHIN
CPC classification number: G06V10/7715 , G06V10/62 , H04N7/183 , H04N23/65 , H04N23/72 , H04N23/73 , H04N23/741 , G06V10/774
Abstract: There is provided a low-resolution imaging apparatus configured to form and transmit a low-resolution image of an object. The low-resolution imaging apparatus includes: a low-resolution camera configured to form the low-resolution image of the object; a microcontroller including an analog-to-digital convertor (ADC) that converts the low-resolution image into a digital image; an energy harvesting module configured to provide power to the low-resolution camera and the microcontroller; and a radio frequency identification (RFID) unit configured to transmit the digital-converted low-resolution image.
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6.发明公开公开(公告)号：US20240142596A1
公开(公告)日：2024-05-02
申请号：US18501592
申请日：2023-11-03
Inventor： Kang Min BAE , Hankyeol MOON , Song Min KIM
CPC classification number: G01S13/34 , G01S13/325 , G01S13/758 , G01S13/825 , G01S2013/0263
Abstract: Provided are a tag, interrogator, and system for performing position measurement based on backscatter in a millimeter-wave band. In detail, provided is a tag including a planar Van Atta array antenna, a frequency-shift keying (FSK) modulator connected to the planar Van Atta array antenna, and at least one bias circuit connected to the FSK modulator, wherein the FSK modulator is configured to, based on an interrogation signal being received by the planar Van Atta array antenna, modulate the interrogation signal based on a control signal supplied through the at least one bias circuit, and output the modulated interrogation signal in a direction from which the interrogation signal is received, through the planar Van Atta array antenna.
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公开(公告)号：US20230179258A1
公开(公告)日：2023-06-08
申请号：US18072322
申请日：2022-11-30
Inventor： Song Min KIM , Kang Min BAE , Nam Jo AHN
IPC: H04B5/00
CPC classification number: H04B5/0062
Abstract: Provided is a communication device. The communication device includes an interrogator configured to output an interrogation signal in which unit chirp signals that vary from a first frequency to a second frequency are continuous, and backscatter tags configured to receive the interrogation signal and each provide a tag signal formed by frequency modulation on the interrogation signal, wherein the interrogator receives the tag signals and demodulates the tag signals.
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公开(公告)号：US20230013763A1
公开(公告)日：2023-01-19
申请号：US17763496
申请日：2020-08-03
Inventor： Jin Hwan JUNG , Song Min KIM , Ji Hoon RYOO , Yung YI
Abstract: A modulation scheme conversion device includes: a backscattering tag to which a tag signal is provided; and a tag signal forming unit for forming a tag signal. The modulation scheme conversion device multiplies a radio signal, which has been modulated in a first modulation scheme, and a tag signal, and reconfigures the multiplied signal by using a second modulation scheme, so as to backscatter the reconfigured signal, wherein the reconfiguration is performed in a physical (PHY) layer.
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