公开(公告)号：US11652707B2

公开(公告)日：2023-05-16

申请号：US17207214

申请日：2021-03-19

Applicant: Hitachi, Ltd.

Inventor： Masayuki Takase ,  Takaaki Suzuki ,  Nodoka Mimura ,  Junnosuke Wakai

IPC: H04L41/50 ,  H04L12/46 ,  H04L61/5007

CPC classification number: H04L41/50 ,  H04L12/46 ,  H04L61/5007

Abstract: Constructed is a network management system which manages, in an integrated manner, a first communication system, a second communication system and a third communication system passed through by packets that are sent and received via wireless communication between a first device and a second device. The network management system performs information setting to these communication systems for dividing a communication system group, which includes these communication systems, into a plurality of logical partitions each corresponding to a plurality of different service levels based on the management information of each of these communication systems. A logical partition corresponding to a service level with regard to each of the plurality of different service levels is a partition passed through by packets that are sent and received via wireless communication between the first device and the second device belonging to that service level.

公开(公告)号：US11507881B2

公开(公告)日：2022-11-22

申请号：US16644892

申请日：2018-08-13

Applicant: Hitachi, Ltd.

Inventor： Nodoka Mimura ,  Yuji Tsushima ,  Kozo Ikegami

IPC: G06F21/55 ,  G06N20/00 ,  G06N5/02

Abstract: An analysis apparatus comprises: a processor; and a storage device that stores a prediction model that predicts results for contributing factors of a group of events, wherein the processor executes: a prediction error calculation process in which, on the basis of a first prediction value attained by providing the prediction model with a first appearance frequency for contributing factors of a first event among the group of events, and results corresponding to the first appearance frequency, a prediction error of the first prediction value is calculated; and an error factor extraction process in which, on the basis of a correlation between a second appearance frequency for a contributing factor of a second event among the group of events and the prediction error calculated by the prediction error calculation process, an error factor of the prediction error is extracted from among the contributing factors of the first event.

公开(公告)号：US09420590B2

公开(公告)日：2016-08-16

申请号：US14447927

申请日：2014-07-31

Applicant: HITACHI, LTD.

Inventor： Masashi Yano ,  Nodoka Mimura ,  Naruhito Nakahara

IPC: H04B15/00 ,  H04W72/04 ,  H04W88/16 ,  H04W28/16

CPC classification number: H04W72/0486 ,  H04W28/16 ,  H04W88/16

Abstract: Appropriate bandwidths are allocated to base stations in response to variations in the arrangement of mobile terminals and according to the type of mobile terminals. Mobile gateways disposed between a plurality of base stations connecting a plurality of mobile terminals and a service network include a base station information acquiring unit that acquires communication capacities of the base stations; a mobile terminal information acquiring unit that acquires a communication capacity of each type of the mobile terminals; a communication bandwidth estimating unit that estimates the communication bandwidths of the base stations on the basis of the acquired communication capacities of the base stations and the acquired communication capacities of mobile terminals; and a communication bandwidth control unit that controls communication bandwidths corresponding to the base stations on the basis of the estimated communication bandwidth.

Abstract translation: 响应于移动终端的布置的变化以及根据移动终端的类型，将合适的带宽分配给基站。 设置在连接多个移动终端的多个基站与服务网络之间的移动网关包括获取基站的通信能力的基站信息获取单元， 移动终端信息获取单元，其获取每种类型的移动终端的通信容量; 通信带宽估计单元，其基于获取的基站的通信容量和所获取的移动终端的通信容量来估计基站的通信带宽; 以及通信带宽控制单元，其基于所估计的通信带宽来控制与所述基站相对应的通信带宽。

公开(公告)号：US12035212B2

公开(公告)日：2024-07-09

申请号：US17746428

申请日：2022-05-17

Applicant: Hitachi, Ltd.

Inventor： Takeshi Shibata ,  Nodoka Mimura

IPC: H04W4/50 ,  H04W24/02 ,  H04W88/08 ,  H04W88/18

CPC classification number: H04W4/50 ,  H04W24/02 ,  H04W88/08 ,  H04W88/18

Abstract: A wireless communication device including a network device, a wireless base station, and a server device includes: a plurality of surfaces that is a plurality of logical network sections; and a control device connected to the network device. The network device has: a plurality of first NW-IFs connected to the server device; and a second NW-IF connected to at least one of a network and wireless base station and connected to any one of the plurality of first NW-IFs. The server device has: a plurality of applications; a plurality of network settings; and a plurality of SV-IFs connected to the plurality of first NW-IFs. Each of the plurality of surfaces includes an application, network setting, SV-IF, and first NW-IF. The control device selects a surface conforming to conditions, and causes the network device to execute surface switching for connecting the second NW-IF to the first NW-IF in the selected surface.

公开(公告)号：US20220078158A1

公开(公告)日：2022-03-10

申请号：US17464873

申请日：2021-09-02

Applicant: Hitachi, Ltd.

Inventor： Nodoka Mimura ,  Masayuki Takase ,  Takeshi Shibata

IPC: H04L29/12

Abstract: A system includes a plurality of processing servers connected to a plurality of networks with different address systems. For each module that constitutes an application, a processing server at an arrangement destination of the module has tunneling transmission information. The tunneling transmission information is information representing a module address and a processing server address for each module. The processing server address is an address that follows an address system of a network to which the processing server is connected, while the module address is an address that follows an address system of a virtual network. The processing server specifies the processing server address of the processing server in which a module at a transmission destination of a packet is arranged from the tunneling transmission information, and transmits the packet based on the specified processing server address.

公开(公告)号：US11899799B2

公开(公告)日：2024-02-13

申请号：US17029840

申请日：2020-09-23

Applicant: Hitachi, Ltd.

Inventor： Jens Doenhoff ,  Nodoka Mimura ,  Yoshiaki Isobe

IPC: G06F21/57 ,  G06F8/65

CPC classification number: G06F21/577 ,  G06F8/65 ,  G06F21/572 ,  G06F2221/033

Abstract: A system performs an application update process based on security management information that is information including meta information for each of a plurality of security services. The application update process is a process for adding one or more security services including a security service that reduces the security risk of an application having a plurality of distributed microservices having a graph structure relationship to the application.

公开(公告)号：US09769265B2

公开(公告)日：2017-09-19

申请号：US14734299

申请日：2015-06-09

Applicant: Hitachi, Ltd.

Inventor： Masashi Yano ,  Tsutomu Hirao ,  Michitaka Okuno ,  Nodoka Mimura ,  Daisuke Ishii ,  Yuta Muto

IPC: G06F11/00 ,  H04L29/08

CPC classification number: H04L67/148 ,  H04L29/08639

Abstract: A communication system comprising computers and a management computer, wherein the computers include a communication control unit configured to control a communication using a session of a terminal. The communication control unit manages a database storing in a plurality of pieces of session information. The management computer includes property management information for managing a property of each of the plurality of pieces of session information. The session information migration control unit is configured to: detect a migration trigger of the plurality of pieces of session information stored in a first database; select the plurality of pieces of session information from the plurality of pieces of session information stored in the first database based on the property management information; determine a migration order for the selected plurality of pieces of session information based on the property of the each of the selected plurality of pieces of session information.