公开(公告)号：US20160294673A1

公开(公告)日：2016-10-06

申请号：US15038143

申请日：2014-10-16

Applicant: NEC CORPORATION

Inventor： Yuta ASHIDA

IPC: H04L12/715 ,  H04L12/751 ,  H04L12/721

CPC classification number: H04L45/04 ,  H04L45/02 ,  H04L45/26

Abstract: A communication system includes: a plurality of control apparatuses 81 each for controlling packet transmission by one or more communication nodes connected to the control apparatus, by setting a packet processing rule in the communication nodes; and a network information combination apparatus 82 connected to the plurality of control apparatuses 81 and a computation apparatus for computing a packet processing rule across domains each of which indicates a range including one or more communication nodes controlled by a different one of the plurality of control apparatuses 81, and the network information combination apparatus 82 includes: a network information combination unit 83 for acquiring network information on a connection relationship between communication nodes controlled by each control apparatus 81 and combining a plurality of items of network information acquired from each control apparatus 81 based on boundary link information on a connection relationship at a boundary between the domains.

Abstract translation: 通信系统包括：多个控制装置81，用于通过在通信节点中设置分组处理规则来控制与控制装置连接的一个或多个通信节点的分组传输; 以及连接到多个控制装置81的网络信息组合装置82和用于计算横跨各个域的分组处理规则的计算装置，每个表示包括由多个控制装置中的不同的控制装置控制的一个或多个通信节点的范围 81，网络信息组合装置82包括：网络信息组合单元83，用于获取关于由各个控制装置81控制的通信节点之间的连接关系的网络信息，并且组合从每个控制装置81获取的多个网络信息项 关于域之间的边界处的连接关系的边界链接信息。

公开(公告)号：US20210118296A1

公开(公告)日：2021-04-22

申请号：US16463026

申请日：2017-11-17

Applicant: NEC Corporation

Inventor： Yuta ASHIDA ,  Itaru NISHIOKA

IPC: G08G1/13 ,  G08G1/01

Abstract: Provided are a traffic status estimation device and the like with which it is possible to estimate the traffic status with high precision even in a situation in which there are few sections with sensors installed therein and the vehicle travel history is inadequate. This traffic status estimation device includes: a traffic status estimation unit that estimates the traffic status in sections in which sensors are not installed on the basis of the similarity of the traffic status among sets comprising a plurality of time bands and a plurality of sections that include sections in which sensors are installed and sections in which sensors are not installed, and on the basis of the traffic status in the sections in which sensors are installed; and an output unit that outputs the traffic status estimated by the traffic status estimation unit.

公开(公告)号：US20190325743A1

公开(公告)日：2019-10-24

申请号：US16461925

申请日：2017-11-17

Applicant: NEC Corporation

Inventor： Itaru NISHIOKA ,  Yuta ASHIDA

IPC: G08G1/01

Abstract: The purpose of the present invention is to preserve quality of service which a toll road provides. Provided is a traffic control system 1, comprising a prediction unit 210 and a control unit 230. The prediction unit 210 predicts a traffic state on one path among a plurality of paths from a first point to a second point. If the predicted traffic state on the one path does not satisfy a prescribed service level, the control unit 230 controls quantities of apportionment of vehicles among the plurality of paths on the first point such that the traffic state on the one path satisfies the prescribed service level.

公开(公告)号：US20170111231A1

公开(公告)日：2017-04-20

申请号：US15338917

申请日：2016-10-31

Applicant: NEC Corporation

Inventor： Yuta ASHIDA ,  Toshio Koide

IPC: H04L12/24 ,  H04L29/08

CPC classification number: H04L41/12 ,  H04L41/04 ,  H04L45/00 ,  H04L69/324 ,  Y02D30/30

Abstract: A communications system includes: a first node device provided in a first network; a first controller controlling the first node device; a second node device provided in a second network and connected to the first node device; and a second controller controlling the second node device. The first controller sets the first node device with a processing rule according to which packets transferred between the first and second controllers are processed. The second controller sets the second node device with a processing rule according to which the packets are processed. The first and second controllers exchanges the packets each other through at least the first and second node devices.

公开(公告)号：US20220327394A1

公开(公告)日：2022-10-13

申请号：US17618098

申请日：2019-06-21

Applicant: NEC Corporation

Inventor： Yuta ASHIDA

IPC: G06N5/02

Abstract: A learning support apparatus 1 includes a feature pattern extraction unit 2 configured to extract a pattern of feature amounts that differentiates samples classified based on residuals using the classified samples and feature amounts used for learning a predictive model; and an error contribution calculation unit 3 configured to calculate an error contribution to a prediction error in the pattern of feature amounts using the extracted pattern of feature amounts and the residuals.

公开(公告)号：US20200219331A1

公开(公告)日：2020-07-09

申请号：US16633013

申请日：2018-06-27

Applicant: NEC CORPORATION

Inventor： Itaru NISHIOKA ,  Yuta ASHIDA ,  Michihiko YUSA ,  Takeshi NAKAJIMA

IPC: G07B15/06 ,  G08G1/01 ,  G06Q50/30

Abstract: According to the present invention, there is provided an information processing apparatus (30) of a second administrator, the apparatus including: a first obtainment unit (31) that obtains first information collected by a first information collection apparatus installed over a first road managed by a first administrator; a second obtainment unit (32) that obtains second information collected by a second information collection apparatus installed over a second road managed by the second administrator; and a notification unit (33) that notifies the first administrator of at least one of the first information and information detected on the basis of the first information.

公开(公告)号：US20190311615A1

公开(公告)日：2019-10-10

申请号：US16315215

申请日：2017-07-07

Applicant: NEC Corporation

Inventor： Yuta ASHIDA ,  Itaru NISHIOKA

IPC: G08G1/01 ,  G08G1/052 ,  G06N5/04

Abstract: A traffic control support system for accurately predicting, when an irregular event occurs, a traffic state and an influence of the event on the traffic state, is provided. The traffic control support system includes calculation means for calculating, based on a relation between a flow rate and a density of traffic and a predicted value of the density in a regular state in each of a plurality of locations, an estimated value of the density in each of one or more locations at a specific time after an event starting time representing a time at which an irregular event occurs in at least one of the plurality of locations, and display control means for displaying an influence of the irregular event on traffic in each of one or more locations, based on an estimated value of the density.

公开(公告)号：US20190033083A1

公开(公告)日：2019-01-31

申请号：US16073208

申请日：2016-03-30

Applicant: NEC Corporation

Inventor： Yuta ASHIDA ,  Itaru NISHIOKA

IPC: G01C21/34 ,  G01C21/36

Abstract: A route analysis device of the present invention is for analyzing a route from a departure location to a destination. This device includes: a traffic condition prediction unit (11) that, for each of multiple future times, predicts a traffic condition in each of multiple zones that exist from the departure location to the destination; an estimation unit (12) that selects one of the traffic conditions predicted for each of the future times in accordance with the elapsed time from when prediction was performed by the traffic condition prediction unit (11), and, using the selected traffic condition, estimates a travel time that corresponds to the elapsed time in each of the zones; and a route analysis unit (13) that, using the travel times estimated for the zones, calculates the smallest value of the travel time from the departure location to the destination.

公开(公告)号：US20160301595A1

公开(公告)日：2016-10-13

申请号：US15036867

申请日：2014-10-16

Applicant: NEC CORPORATION

Inventor： Yuta ASHIDA

IPC: H04L12/715 ,  H04L29/06

CPC classification number: H04L45/04 ,  H04L45/38 ,  H04L45/42 ,  H04L45/64 ,  H04L69/22

Abstract: A communication system includes: a plurality of control apparatuses 81 each for controlling packet transmission by one or more communication nodes connected to the control apparatus, by setting a packet processing rule in the communication nodes; and a network information combination apparatus 82 connected to the plurality of control apparatuses 81 and a computation apparatus for computing a packet processing rule across domains each of which indicates a range including one or more communication nodes controlled by a different one of the plurality of control apparatuses 81, wherein the network information combination apparatus 82 includes a packet processing rule conversion unit 83 for converting the packet processing rule computed by the computation apparatus, to decomposed packet processing rules each of which is a packet processing rule to be set in one or more communication nodes controlled by a different one of the plurality of control apparatuses 81.

Abstract translation: 通信系统包括：多个控制装置81，用于通过在通信节点中设置分组处理规则来控制与控制装置连接的一个或多个通信节点的分组传输; 以及连接到多个控制装置81的网络信息组合装置82和用于计算横跨各个域的分组处理规则的计算装置，每个表示包括由多个控制装置中的不同的控制装置控制的一个或多个通信节点的范围 81，其中，网络信息组合装置82包括用于将由计算装置计算的分组处理规则转换为分解处理规则转换单元83，分解处理规则，每个分组处理规则是要在一个或多个通信中设置的分组处理规则 由多个控制装置81中的不同控制装置控制的节点。

公开(公告)号：US20150381775A1

公开(公告)日：2015-12-31

申请号：US14763116

申请日：2014-02-12

Applicant: NEC CORPORATION

Inventor： Yuta ASHIDA

IPC: H04L29/06

CPC classification number: H04L69/22 ,  H04L12/4641 ,  H04L45/54 ,  H04L45/64

Abstract: A communication system including: a plurality of communication nodes that process received packets on the basis of a packet handling operation for processing packets; and a control apparatus that sets the packet handling operation in the plurality of communication nodes; wherein, in response to setting a first packet handling operation for changing header information of a packet(s) in a first communication node, the control apparatus sets a second packet handling operation for processing the packet(s) including the changed header information in a second communication node.

Abstract translation: 一种通信系统，包括：多个通信节点，其基于用于处理分组的分组处理操作来处理接收的分组; 以及控制装置，其在所述多个通信节点中设置所述分组处理操作; 其中，响应于设置用于改变第一通信节点中的分组的报头信息的第一分组处理操作，所述控制装置设置第二分组处理操作，用于处理包括所述更改的报头信息的分组 第二通信节点。