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11.发明授权公开(公告)号：US12231197B2
公开(公告)日：2025-02-18
申请号：US18132633
申请日：2023-04-10
Applicant: NEC Corporation
Inventor： Toshiki Takeuchi , Kazushi Muraoka
Abstract: A control device configured to predict prediction information based on in-operation time-series data with use of a learning device, the learning device being trained, during training, (i) with time-series data, using as training data, in which pieces of radio quality information of respective antennas that are disposed in a distributed manner and that perform wireless communications with a terminal device are arranged in time series, and (ii) with assignment information, using as training data, that includes information about the antenna assigned, from the training data, to the wireless communications after a predetermined length of time, wherein the in-operation time-series data being the time-series data acquired during operation, and the prediction information including information about the antenna to be assigned, from the in-operation time-series data, to the wireless communications after the predetermined length of time.
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公开(公告)号：US12058527B2
公开(公告)日：2024-08-06
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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13.发明公开公开(公告)号：US20230169401A1
公开(公告)日：2023-06-01
申请号：US17994672
申请日：2022-11-28
Applicant: NEC Corporation
Inventor： Toshiki Takeuchi
CPC classification number: G06N20/00 , G06K9/6223 , G06K9/6228 , G06K9/6256
Abstract: It is possible to improve recognition accuracy of an unknown transmission apparatus. A system inputs n pieces of first information (an unknown signal or a radio feature thereof), inputs the n pieces of first information to a supervised learning model that has been learned with respect to a known signal, and extracts n sample features. The system performs clustering processing on the n sample features. The system inputs m pieces of estimation target information to be estimated by an estimation apparatus that performs processing different from the clustering processing on the n unknown signals or radio features thereof, and acquires M pieces of estimation information. The system generates a relationship matrix indicating a relationship between a result classified into K groups by the clustering processing and the M pieces of estimation information.
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Patent Agency Ranking
公开(公告)号：US11350297B2
公开(公告)日：2022-05-31
申请号：US17082782
申请日：2020-10-28
Applicant: NEC CORPORATION
Inventor： Toshiki Takeuchi
Abstract: An appropriate time is set as an acquisition period during which a reception data sequence for extracting a frame feature value is acquired. A radio frame analysis system includes a transmission node number count unit that counts the number of transmission nodes from a reception data sequence, an acquisition period calculation unit that calculates an acquisition period based on a result of the counting by the transmission node number count unit, and a frame feature value extraction unit that extracts a frame feature value of each of the transmission nodes from the reception data sequence received in the acquisition period.
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15.发明授权公开(公告)号：US11930476B2
公开(公告)日：2024-03-12
申请号：US17284609
申请日：2019-10-09
Applicant: NEC Corporation
Inventor： Toshiki Takeuchi
Abstract: The present invention is designed to make it possible to draw proper associations, when integrating pieces of information estimated in individual sensors, by associating between objects sensed by a plurality of sensors. A sensor information integration system 101 includes a radio frame analyzing section 33 configured to analyze a radio frame transmitted from a first object, to extract the first attribute information, an image analyzing section 40 configured to analyze an image, in which a second object is sensed, to extract second attribute information, and an association judging section 21 configured to judge an association between the first object and the second object, using the first attribute information and the second attribute information.
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公开(公告)号：US11881970B2
公开(公告)日：2024-01-23
申请号：US17988951
申请日：2022-11-17
Applicant: NEC Corporation
Inventor： Kiyohiko Takahashi , Toshiki Takeuchi , Naoto Ishii
CPC classification number: H04L25/03019 , H04L27/265
Abstract: A signal detection unit detects, from a baseband signal of a received radio wave, two types of fixed signal sections that have different communication information and are present in sufficiently shorter time than a time period in which influence of fading fluctuates, and designate the detected two types of fixed signal sections as an information-1 section and an information-2 section. An information-1 section signal processing unit clips the information-1 section from the baseband signal, and performs Fourier transform on the clipped information-1 section. An information-2 section signal processing unit clips the information-2 section from the baseband signal, and performs Fourier transform on the clipped information-2 section. A feature value computation unit computes a feature value, based on an output of the information-1 section signal processing unit and an output of the information-2 section signal processing unit.
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公开(公告)号：US11877168B2
公开(公告)日：2024-01-16
申请号：US17512821
申请日：2021-10-28
Applicant: NEC Corporation
Inventor： Toshiki Takeuchi , Kohei Okada
CPC classification number: H04W24/08 , H04W40/246
Abstract: A radio frame analysis system includes: an analysis unit that analyzes a network configuration by performing clustering processing on a frame feature value; a distance calculation unit that calculates a distance between clusters obtained by the clustering processing; a reliability determination unit that determines reliability of a result of the clustering processing based on the distance between the clusters; an output unit that outputs a result of the analysis performed by the analysis unit; and an output timing change unit that changes a timing at which the output unit outputs the result of the analysis by changing the number of samples of the frame feature value required to output the result in accordance with the reliability.
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公开(公告)号：US11017367B2
公开(公告)日：2021-05-25
申请号：US15550447
申请日：2016-02-17
Applicant: NEC Corporation
Inventor： Toshiki Takeuchi
Abstract: A processing device allocates processing resources to a communication processing and an application processing and executes at least the communication processing and the application processing. The processing device includes: a communication interface and at least one processor that operates to execute a scheduling processing that allocates communication processing resources that are at least a part of the processing resources to the communication processing in a preferential manner and a billing processing that bills a user of the application processing according to a usage amount of processing resources used for the application processing. The application processing includes a non-priority application processing processable in a non-preferential manner. The scheduling processing is capable of allocating, when a load on the communication processing resources does not reach a predetermined threshold, the communication processing resources to the non-priority application processing. The billing processing bills for the non-priority application processing at a usage fee of the communication processing resources more inexpensive.
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