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公开(公告)号：US20210258081A1
公开(公告)日：2021-08-19
申请号：US16973589
申请日：2019-06-12
Applicant: NEC Corporation
Inventor： Taichi OHTSUJI
IPC: H04B15/00
Abstract: A transmission device identification system includes: one or more reception units; a feature output unit that outputs, for each of the one or more reception units, a feature of a reception signal of the reception unit, the feature being corrected based on a receiver characteristic of the reception unit; and an identification unit that identifies a transmission device that is a radio wave transmitting source based on the feature and a transmission radio wave feature, the transmission radio wave feature indicating a feature of a transmission radio wave for each transmission device.
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公开(公告)号：US20210250894A1
公开(公告)日：2021-08-12
申请号：US16973614
申请日：2019-06-12
Applicant: NEC Corporation
Inventor： Taichi OHTSUJI , Toshiki TAKEUCHI , Masaki KITSUNEZUKA
Abstract: A terminal number estimating system includes: a plurality of receivers that receive a wireless signal transmitted from a plurality of terminal devices by frequency-division multiple access; a Fourier transform unit that performs a discrete Fourier transform on each wireless signal received by the plurality of reception means and outputs a discrete Fourier coefficient; and a terminal number estimation unit that estimates a position of each terminal device by clustering a resource block of each wireless signal based on each discrete Fourier coefficient.
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3.发明申请公开(公告)号：US20210166536A1
公开(公告)日：2021-06-03
申请号：US17148747
申请日：2021-01-14
Applicant: NEC CORPORATION
Inventor： Taichi OHTSUJI , Kazushi Muraoka , Hiroaki Aminaka , Dai Kanetomo , Norio Yamagaki , Takashi Yoshinaga
IPC: G08B13/196 , G06T7/292 , G06K9/00 , G08B25/00
Abstract: A tracking support system includes a position calculating section connected with a plurality of cameras arranged in a predetermined monitoring area to transmit video images imaged by the plurality of cameras and configured to calculate a position of the tracking target based on the video images received from the plurality of cameras; a tracker selecting section configured to select a tracker to be instructed to track the tracking target, based on position information of the terminal received from the terminal and the calculated position of the tracking target; and an information transmitting section configured to transmit information of a distance between the tracking target and the terminal during the tracking of the tracking target to the terminal carried by the selected tracker.
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公开(公告)号：US20180199206A1
公开(公告)日：2018-07-12
申请号：US15740676
申请日：2016-03-11
Applicant: NEC Corporation
Inventor： Kazushi MURAOKA , Taichi OHTSUJI
CPC classification number: H04W16/14 , H04L5/0028 , H04L5/0048 , H04L5/0092 , H04W8/005 , H04W16/10 , H04W92/18
Abstract: A radio terminal (1) selects, from a resource pool in a discovery period, NTX sets of resource blocks for NTX transmissions of a discovery signal based on a first value n1 that is a resource value autonomously selected by the radio terminal (1) or is a parameter received from a base station (2). A frequency domain shift from a second resource block set used in (j−1)th transmission (j is an integer no less than 2) to a first resource block set used in j-th transmission of the discovery signal in the discovery period depends on at least one of the first value n1 and a frequency domain position of the second resource block set in the resource pool. It is thus, for example, possible to attenuate decline in reception quality of a discovery signal due to interference resulting from In-Band Emissions (IBE) when direct discovery of D2D communication is performed.
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公开(公告)号：US20180192458A1
公开(公告)日：2018-07-05
申请号：US15739407
申请日：2016-01-19
Applicant: NEC CORPORATION
Inventor： Hiroaki AMINAKA , Kazushi MURAOKA , Taichi OHTSUJI
CPC classification number: H04W76/14 , H04L67/16 , H04W8/005 , H04W36/03 , H04W36/30 , H04W76/23 , H04W84/22 , H04W88/04 , H04W92/18
Abstract: A D2D communication control apparatus (10) according to the present invention includes: a communication unit (11) configured to receive determination information that can be used to determine whether a plurality of radio terminals are capable of performing direct communication with another radio terminal; and a selection unit (12) configured to select, in a situation in which a first radio terminal included in the plurality of radio terminals is performing D2D communication with a relay radio terminal that performs cellular communication with a network, a radio terminal in which the determination information between the radio terminal and the relay radio terminal satisfies a predetermined condition among radio terminals capable of performing D2D communication with the first radio terminal, as a preliminary relay radio terminal.
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Patent Agency Ranking
6.发明公开公开(公告)号：US20240062637A1
公开(公告)日：2024-02-22
申请号：US18367833
申请日：2023-09-13
Applicant: NEC Corporation
Inventor： Taichi OHTSUJI , Kazushi MURAOKA , Hiroaki AMINAKA , Dai KANETOMO , Norio YAMAGAKI , Takashi YOSHINAGA
IPC: G08B13/196 , G08B25/00 , G06V20/52 , G06T7/292
CPC classification number: G08B13/19608 , G08B13/19613 , G08B13/19645 , G08B25/009 , G06V20/52 , G06T7/292 , G06T2207/30232
Abstract: A tracking support system includes a position calculating section connected with a plurality of cameras arranged in a predetermined monitoring area to transmit video images imaged by the plurality of cameras and configured to calculate a position of the tracking target based on the video images received from the plurality of cameras; a tracker selecting section configured to select a tracker to be instructed to track the tracking target, based on position information of the terminal received from the terminal and the calculated position of the tracking target; and an information transmitting section configured to transmit information of a distance between the tracking target and the terminal during the tracking of the tracking target to the terminal carried by the selected tracker.
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7.发明公开公开(公告)号：US20240005755A1
公开(公告)日：2024-01-04
申请号：US18368618
申请日：2023-09-15
Applicant: NEC Corporation
Inventor： Taichi OHTSUJI , Kazushi MURAOKA , Hiroaki AMINAKA , Dai KANETOMO , Norio YAMAGAKI , Takashi YOSHINAGA
IPC: G08B13/196 , G08B25/00 , G06V20/52 , G06T7/292
CPC classification number: G08B13/19608 , G08B13/19613 , G08B13/19645 , G06T2207/30232 , G06V20/52 , G06T7/292 , G08B25/009
Abstract: A tracking support system includes a position calculating section connected with a plurality of cameras arranged in a predetermined monitoring area to transmit video images imaged by the plurality of cameras and configured to calculate a position of the tracking target based on the video images received from the plurality of cameras; a tracker selecting section configured to select a tracker to be instructed to track the tracking target, based on position information of the terminal received from the terminal and the calculated position of the tracking target; and an information transmitting section configured to transmit information of a distance between the tracking target and the terminal during the tracking of the tracking target to the terminal carried by the selected tracker.
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8.发明公开公开(公告)号：US20230419799A1
公开(公告)日：2023-12-28
申请号：US18243893
申请日：2023-09-08
Applicant: NEC Corporation
Inventor： Taichi OHTSUJI , Kazushi MURAOKA , Hiroaki AMINAKA , Dai KANETOMO , Norio YAMAGAKI , Takashi YOSHINAGA
IPC: G08B13/196 , G08B25/00 , G06V20/52 , G06T7/292
CPC classification number: G08B13/19608 , G08B13/19613 , G08B13/19645 , G06T2207/30232 , G06V20/52 , G06T7/292 , G08B25/009
Abstract: A tracking support system includes a position calculating section connected with a plurality of cameras arranged in a predetermined monitoring area to transmit video images imaged by the plurality of cameras and configured to calculate a position of the tracking target based on the video images received from the plurality of cameras; a tracker selecting section configured to select a tracker to be instructed to track the tracking target, based on position information of the terminal received from the terminal and the calculated position of the tracking target; and an information transmitting section configured to transmit information of a distance between the tracking target and the terminal during the tracking of the tracking target to the terminal carried by the selected tracker.
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公开(公告)号：US20200008127A1
公开(公告)日：2020-01-02
申请号：US16465420
申请日：2017-06-27
Applicant: NEC CORPORATION
Inventor： Taichi OHTSUJI
Abstract: A relay terminal (2) transmits selection assistance information to a remote terminal (1). The selection assistance information includes a first information element transmitted from a base station (3) and received by the relay terminal (2). The first information element indicates at least one of: (a) a frequency band of the base station (3); a system bandwidth; downlink transmission power; UL/DL configuration; the number of cells provided to the relay terminal; a type of a cell; a RAT or a communication scheme used between the base station (3) and the relay terminal (2); and a name or identifier of a mobile operator providing the base station. This is thus, for example, possible to contribute to improving appropriateness of a relay selection.
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公开(公告)号：US20190036595A1
公开(公告)日：2019-01-31
申请号：US16071924
申请日：2016-12-15
Applicant: NEC CORPORATION
Inventor： Taichi OHTSUJI , Kazushi MURAOKA
Abstract: A relay selecting entity (1, 3, 5) is configured to select at least one specific relay terminal (2) suitable for a first remote terminal (1) from among one or more relay terminals (2) while considering the number of other remote terminals connected to or communicating with each relay terminal (2). Each specific relay terminal (2) relays traffic between the first remote terminal (1) and a base station (3) through a device-to-device (D2D) link (102) between the specific relay terminal (2) and the first remote terminal (1) and through a backhaul link (101) between the specific relay terminal and the base station.
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