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公开(公告)号：US11240133B2
公开(公告)日：2022-02-01
申请号：US16629834
申请日：2018-07-11
Applicant: NEC CORPORATION
Inventor： Yoshiaki Nishikawa
IPC: H04L12/26
Abstract: A communication quality evaluation device includes: a storage unit configured to store permission relationship information indicating a relationship between a plurality of first objective indicators indicating communication quality, and use continuation possibility information indicating whether a user will continue use in the case of each of the first objective indicators; an indicator acquisition unit configured to acquire a second objective indicator at a point in time at which the communication quality evaluation device makes a determination; and a permission determination unit configured to determine, using the second objective indicator acquired by the indicator acquisition unit and with reference to the permission relationship information stored in the storage unit, whether the user will continue use on the basis of the result of the referencing.
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公开(公告)号：US12009879B2
公开(公告)日：2024-06-11
申请号：US17747047
申请日：2022-05-18
Applicant: NEC Corporation
Inventor： Yoshiaki Nishikawa
IPC: H04B17/345 , H04B1/10 , H04B17/391
CPC classification number: H04B17/345 , H04B1/1027 , H04B17/391
Abstract: An example of an object of the present disclosure is to provide an interference detection apparatus, an interference detection method, and a non-transitory computer-readable medium that allow a user to determine a priority of interference to be dealt with in communication. The interference detection apparatus according to an example embodiment includes at least one memory configured to store an instruction, and at least one processor configured to execute the instruction. The processor is further configured to learn a signal state model by using a learning signal in a communication signal, acquire a detection target signal in the communication signal, detect interference in the detection target signal, and calculate a severity of interference in the detection target signal by using the detection target signal, a detection result of the interference, and the learned signal state model.
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公开(公告)号：US10298508B2
公开(公告)日：2019-05-21
申请号：US15306170
申请日：2015-05-11
Applicant: NEC Corporation
Inventor： Yoshiaki Nishikawa
IPC: H04L12/26 , H04L12/835
Abstract: A communication system includes: a transmission unit configured to transmit each of a plurality of measurement packets at a predetermined transmission interval; a reception unit configured to receive the plurality of measurement packets which have passed through a predetermined network for a predetermined number of times; and an available bandwidth estimation unit configured to calculate a cumulative value of a queuing delay by using reception time information indicating temporal information about reception of the measurement packets and transmission time information indicating temporal information about transmission of the measurement packets, and estimate an available bandwidth of the network by using the calculated cumulative value of the queuing delay.
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Patent Agency Ranking
公开(公告)号：US12027884B2
公开(公告)日：2024-07-02
申请号：US17978365
申请日：2022-11-01
Applicant: NEC Corporation
Inventor： Yoshiaki Nishikawa
Abstract: An example object of the present disclosure is to provide an information processing device that is capable of generating a received power distribution around a shield or an obstacle. The information processing device according to the present disclosure includes a detection unit configured to detect presence of an obstacle by using a measurement value of received power measured by a measurement device that receives a wireless radio wave, an estimation unit configured to estimate a change in received power in a predetermined area before detecting presence of the obstacle and after detecting presence of the obstacle, and an updating unit configured to update a first received power distribution in the predetermined area being stored in a storage device, which is generated based on the measurement value before detecting presence of the obstacle, by using the change in received power.
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5.发明授权公开(公告)号：US11290852B2
公开(公告)日：2022-03-29
申请号：US17128605
申请日：2020-12-21
Applicant: NEC CORPORATION
Inventor： Yoshiaki Nishikawa
IPC: H04W4/029
Abstract: An estimation unit 32 estimates, from each of acquired first time-series data pieces, a state of a radio field intensity at a position of an apparatus 10 that corresponds to each of the first time-series data pieces. The estimation unit 32 estimates, from second time-series data, a state of the radio field intensity at a position of an apparatus 20. An estimation unit 33 estimates a state of the radio field intensity at each point in a target space by using the position of each apparatus 10 and the state of the radio field intensity thereof. An estimation unit 34 compares the state at each point with the state at the position of the apparatus 20 and thereby estimates the position of the apparatus 20. An estimation unit 35 estimates a position state of the apparatus 20 based on time-series data of the position of the apparatus 20.
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公开(公告)号：US09565009B2
公开(公告)日：2017-02-07
申请号：US14404274
申请日：2013-04-17
Applicant: NEC Corporation
Inventor： Yoshiaki Nishikawa
CPC classification number: H04L5/0058 , H04L1/08 , H04L69/16
Abstract: A communication apparatus includes: a transmission unit including a narrow interval data transmission unit which transmits a predetermined plurality of sets of data at an interval narrower than a predetermined interval, upon receipt of a narrow interval data transmission instruction; and a reception unit including: a transmission data reception unit which receives data of an application of a communication partner, and issuing a notification each time the data is received; a data transmission interval reception unit which receives a time interval of data transmission from the communication partner; a data non-arrival detection unit which considers data not to be arrived, in the case where the notification has not been issued from the transmission data reception unit for a predetermined time period longer than the time interval received by the data transmission interval reception unit; and a narrow interval data transmission instruction unit which transmits a narrow interval data transmission instruction to the communication partner, when the data non-arrival detection unit considers data not to be arrived.
Abstract translation: 通信装置包括：发送单元，其包括窄间隔数据发送单元，其在接收到窄间隔数据发送指令时，以比预定间隔窄的间隔发送预定的多组数据; 以及接收单元，包括：发送数据接收单元，其接收通信对方的应用的数据，并在每次接收到数据时发出通知; 数据发送间隔接收单元，其从通信对方接收数据发送的时间间隔; 在从数据发送间隔接收单元接收到的时间间隔更长的预定时间段内没有从发送数据接收单元发出通知的情况下，考虑未被到达的数据的数据未到达检测单元; 以及窄数据间隔数据发送指示单元，当数据未到达检测单元认为数据不到达时，将窄间隔数据发送指令发送给通信对方。
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公开(公告)号：US10171366B2
公开(公告)日：2019-01-01
申请号：US14916656
申请日：2014-09-11
Applicant: NEC Corporation
Inventor： Yoshiaki Nishikawa
IPC: H04L12/841 , H04L1/18 , H04L12/801
Abstract: In order to enable retransmission control without imposing heavy load on a transmitter/receiver device and a network, a communication device includes: a transmission data generation unit that outputs, as transmission data, communication data for which an increase in transmission delay is to be reduced; a retransmission confirmation data generation unit that outputs, after the transmission data is output, retransmission confirmation data a predetermined number of times at a first transmission interval; and a communication interface that assigns order information indicating a transmission order, to each of the transmission data and the retransmission confirmation data, and transmits, after the transmission data is transmitted, the retransmission confirmation data.
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公开(公告)号：US20150146636A1
公开(公告)日：2015-05-28
申请号：US14404274
申请日：2013-04-17
Applicant: NEC Corporation
Inventor： Yoshiaki Nishikawa
CPC classification number: H04L5/0058 , H04L1/08 , H04L69/16
Abstract: A communication apparatus includes: a transmission unit including a narrow interval data transmission unit which transmits a predetermined plurality of sets of data at an interval narrower than a predetermined interval, upon receipt of a narrow interval data transmission instruction; and a reception unit including: a transmission data reception unit which receives data of an application of a communication partner, and issuing a notification each time the data is received; a data transmission interval reception unit which receives a time interval of data transmission from the communication partner; a data non-arrival detection unit which considers data not to be arrived, in the case where the notification has not been issued from the transmission data reception unit for a predetermined time period longer than the time interval received by the data transmission interval reception unit; and a narrow interval data transmission instruction unit which transmits a narrow interval data transmission instruction to the communication partner, when the data non-arrival detection unit considers data not to be arrived.
Abstract translation: 通信装置包括：发送单元，其包括窄间隔数据发送单元，其在接收到窄间隔数据发送指令时，以比预定间隔窄的间隔发送预定的多组数据; 以及接收单元，包括：发送数据接收单元，其接收通信对方的应用的数据，并在每次接收到数据时发出通知; 数据发送间隔接收单元，其从通信对方接收数据发送的时间间隔; 在从数据发送间隔接收单元接收到的时间间隔更长的预定时间段内没有从发送数据接收单元发出通知的情况下，考虑未被到达的数据的数据未到达检测单元; 以及窄数据间隔数据发送指示单元，当数据未到达检测单元认为数据不到达时，将窄间隔数据发送指令发送给通信对方。
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