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公开(公告)号：US20180139684A1
公开(公告)日：2018-05-17
申请号：US15572683
申请日：2016-01-21
Applicant: NEC Corporation
Inventor： Hiroaki AMINAKA , Kazushi MURAOKA , Taichi OHTSUJI
Abstract: A wireless terminal apparatus (2) is configured, before the wireless terminal apparatus (2) is requested by another wireless terminal (1) or a D2D controller (5) to start a relay operation between the other wireless terminal (1) and the cellular network (3, 4), to hold connection information necessary to allow the other wireless terminal (1) to communicate with the cellular network (3, 4) or with a node (7) in an external network (6) via the relay operation performed by the wireless terminal apparatus (2). It is thus, for example, possible to contribute to reducing latency from when a mobile relay is requested to start a relay operation until the relay operation can be started.
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12.发明公开公开(公告)号：US20230419798A1
公开(公告)日：2023-12-28
申请号：US18243884
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 , 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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公开(公告)号：US20220182840A1
公开(公告)日：2022-06-09
申请号：US17542665
申请日：2021-12-06
Applicant: NEC Corporation
Inventor： Taichi OHTSUJI , Toshiki TAKEUCHI , Hiroyuki AKIBA
Abstract: A transmission apparatus recognition apparatus includes a storage unit that stores K sets of template feature groups for estimating K (an integer of 2 or more) kinds of information indicative of a transmission apparatus, a degree-of-similarity calculation unit that generates an i (an integer of 1 to K)-th sample feature from a radio feature, and calculates an i-th degree-of-similarity group, based on the i-th sample feature and an i-th set of the template feature group, a summed degree-of-similarity calculation unit that calculates a summed degree of similarity by summing K degrees of similarity by using an i-th weighting factor with respect to 1 to K of i, and an estimation unit that estimates that K information pieces, which are correlated in advance with calculation sources of K degrees of similarity having the summed degree of similarity that is highest, are information indicative of the transmission apparatus.
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公开(公告)号：US20220129767A1
公开(公告)日：2022-04-28
申请号：US17436214
申请日：2020-02-17
Applicant: NEC Corporation
Inventor： Taichi OHTSUJI , Toshiki TAKEUCHI , Tatsuya ABE
Abstract: Provided is a transmitter identifying apparatus configured to receive signals from terminals, extract a feature from the received signal, learn a first feature of the signal that is known as a signal received from a terminal to be discriminated, generate a first classifier for discriminating the terminal to be discriminated, input to the first classifier a second feature of the signal that is unknown whether the signal is received from the terminal to be discriminated, calculate a likelihood distribution representing likelihood for each terminal, analyze the likelihood distribution, determine whether to apply a tentative label to the second feature, and apply the tentative label to the second feature, based on a result of the analysis.
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公开(公告)号：US20210105584A1
公开(公告)日：2021-04-08
申请号：US16606307
申请日：2018-01-18
Applicant: NEC Corporation
Inventor： Taichi OHTSUJI , Kazushi MURAOKA
Abstract: Radio terminals (1A, 1B, 1C) each receive a broadcast/multicast signal (220) from a cellular communication network (10). The representative terminal (1A) receives response messages from the respective neighboring radio terminals (1B, 1C) via D2D communication (231, 232). Each response message is generated based on reception of the broadcast/multicast signal (220) by each neighboring radio terminal (1B, 1C). The representative terminal (1A) generates a representative response message and transmits it to the cellular communication network (10) or another node (7) via uplink transmission (240). It is thus, for example, possible to contribute to improving efficiency of transmission by radio terminals of response messages related to a broadcast/multicast service.
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Patent Agency Ranking
公开(公告)号：US20190029029A1
公开(公告)日：2019-01-24
申请号：US16072205
申请日：2016-12-15
Applicant: NEC CORPORATION
Inventor： Taichi OHTSUJI , Hiroaki AMINAKA , Kazushi MURAOKA
CPC classification number: H04W72/0406 , H04L5/00 , H04L5/0048 , H04L5/0053 , H04W4/023 , H04W72/042 , H04W76/27 , H04W88/04 , H04W92/18
Abstract: A network apparatus (2) transmits, to at least one of a D2D transmitting terminal (1A) and a D2D reception terminal (1B), a first control signal (501) including an indication indicating which of first and second D2D transmission modes is activated. The first D2D transmission mode conforms to a first resource pattern that is repeated every first time period. The second D2D transmission mode conforms to a second resource pattern that is repeated every second time period, the second time period being the same as or different from the first time period. The second resource pattern is defined so as to allow low-latency transmission. In an example, the second resource pattern does not include a control channel subframe pool that is used for transmission of D2D control information indicating resource allocation for data transmission.
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公开(公告)号：US20180159616A1
公开(公告)日：2018-06-07
申请号：US15736165
申请日：2016-02-10
Applicant: NEC Corporation
Inventor： Hiroaki AMINAKA , Kazushi MURAOKA , Taichi OHTSUJI
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 each of a plurality of radio terminals is capable of performing device-to-device (D2D) communication with another radio terminal; and a selection unit (12) configured to select, using the determination information between radio terminals that may operate as relay radio terminals, a candidate for a relay radio terminal that relays the communication between one of the plurality of radio terminals and a network, the relay radio terminal candidate transmitting a response signal in response to a first discovery signal transmitted from one of the radio terminals by performing D2D communication with the one of the plurality of radio terminals and performing cellular communication with the network.
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18.发明公开公开(公告)号：US20240005754A1
公开(公告)日：2024-01-04
申请号：US18367586
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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19.发明申请公开(公告)号：US20230092448A1
公开(公告)日：2023-03-23
申请号：US17801313
申请日：2020-12-21
Applicant: NEC Corporation
Inventor： Umihiko ITO , Kenji KOUNO , Toshiki TAKEUCHI , Jun SAKAI , Taichi OHTSUJI
IPC: H04W24/08 , H04B17/309
Abstract: An abnormality detection apparatus according to an example embodiment includes a reception unit for receiving radio waves, a feature amount extraction unit for extracting a plurality of feature amounts in a predetermined frequency band from the received radio waves, a recording unit for recording the plurality of extracted feature amounts and the frequency band in association with each other, and a processing unit for acquiring a plurality of feature amounts in a predetermined range from the plurality of accumulated feature amounts, determining whether or not the acquired feature amounts fall within a preset normal range, and generating, based on a result of the determination, an abnormality determination mask, threshold values for the plurality of feature amounts, in order to detect an abnormality of the radio waves being set in the abnormality determination mask.
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公开(公告)号：US20220345230A1
公开(公告)日：2022-10-27
申请号：US17637116
申请日：2019-10-08
Applicant: NEC Corporation
Inventor： Taichi OHTSUJI
Abstract: The present invention improves efficiency of operator's work by automating template registration of an unregistered transmission apparatus. A transmission apparatus recognition apparatus includes a receiving unit, a recognition unit, and a template feature registration unit. The receiving unit receives a signal wirelessly transmitted from a transmission apparatus. The recognition unit calculates a degree of similarity between a sample feature generated from a received signal received by the receiving unit and template features registered in advance, compares the degree of similarity with recognition threshold value, and thereby recognizes the transmission apparatus. The template feature registration unit generates a template feature from a sample feature that failed to be recognized by the recognition unit.
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