Tokyo, Japan
Tokyo, Japan

NEC Corporation is a Japanese multinational provider of information technology services and products, with its headquarters in Minato, Tokyo, Japan. NEC provides information technology and network solutions to business enterprises, communications services providers and to government agencies. The company was known as the Nippon Electric Company, Limited, before rebranding in 1983 as just NEC. Its NEC Semiconductors business unit was one of the worldwide top 20 semiconductor sales leaders before merging it with Renesas Electronics. NEC is a member of the Sumitomo Group. Wikipedia.


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A sign of the landslide disaster is easily detected. A model learning unit (120) of an anomaly detection device (100) learns a relational expression between vibration strengths at frequencies based on a time series of frequency characteristics of a vibration strength detected during a learning period by a vibration sensor placed on a monitoring target. The anomaly detection unit (140) learns a relational expression between vibration strengths at frequencies based on a time series of frequency characteristics of a vibration strength detected during a new period by the vibration sensor. Then, the anomaly detection unit (140) determines whether or not there is an anomaly in the monitoring target based on a relational expression related to a new frequency, which is different from the relational expression learned during the learning period.


The antenna device includes an antenna unit (110) mounted so that its direction is adjustable, a motor-driven unit (124, 125) that changes a direction of the antenna unit (110), a camera (130) fixed so that its direction relative to the antenna unit (110) does not change, and a direction adjustment control unit (200) that supplies a drive signal to the motor-driven unit (124, 125) and adjusts the direction of the antenna unit (110). The direction adjustment control unit (200) performs feedback control to return the direction of the antenna unit (110) back to an initial direction based on an image taken by the camera (130). It is thereby possible to maintain the communication quality even when a mechanical vibration occurs in a structure on which an antenna device is mounted.


A technique making it possible to perform flexible virtual machine control is provided. A server according to the present invention is characterized by including: a first means capable of operating a plurality of network functions executed by a network node on a plurality of virtual machines corresponding respectively to the network functions; and a second means capable of forwarding a received signal to a virtual machine that operates a network function corresponding to the received signal, wherein the first means is capable of controlling a resource to allocate to the virtual machine corresponding to the network function, depending on a type of the network function.


This storage battery unit (10), comprising: a battery stack (30) in which a plurality of battery modules (20) are stacked; and a housing (50) for accommodating the battery stack; wherein the housing (50) comprises a battery cover (51) for covering at least a part of the battery stack, the battery cover including a seamless cup portion (51 a, 51 b), and wherein the battery cover (51) is in thermally contact with the battery stack (30).


Patent
NEC Corp | Date: 2017-04-05

A battery system includes a battery, a control section that controls the battery to charge electric power supplied from the electrical grid and to discharge electric power to the electrical grid; and a system controller. The system controller controls the control section such that the battery system operates in a first mode where electric power that is generated by a pre-designated distributed electric power source associated with the electrical grid is supplied preferentially to a users load or in a second mode where electric power that is charged in the battery is supplied preferentially to the users load.


A packet processing device provided with: an action table that includes actions that define packet processing details; a storage unit that holds a rule table that includes rules for retrieving actions that apply to packets; a rule control unit that updates the rules included in the rule table; and a packet processing unit that uses the rule table to retrieve from the action table actions that apply to a received packet and that processes the packet in accordance with the retrieved actions and also accumulates pointers for the retrieved actions. After accumulating pointers, the packet processing unit determines whether the rule table has been updated by the rule control unit and, when the rule table has not been updated, in accordance with the accumulated pointers extracts from the action table actions that apply to the received packet. The present invention increases the speed with which packet processing is performed by a packet processing unit that is implemented by software.


The objective of the invention is to provide an enriched method for suppressing transmissions of inquiry messages of flow entry. A communication apparatus comprises: a packet reception notification unit that, upon reception of predetermined packets, transmits, to a predetermined control apparatus, packet reception notifications indicating the receptions of the packets; and a packet monitor unit that receives, from the packet reception notification unit, a designated packet having been designated in advance among the predetermined packets and that, if a status value included in the designated packet satisfies a predetermined condition, inhibits the transmission of the packet reception notification to the control apparatus.


A control apparatus (1) is configured to automatically update a neighbour relation table (40, 131) of a source cell (10A). The control apparatus (1) is further configured to add, to the neighbour relation table (40, 131), a new entry (41) indicating a neighbour-cell relation from the source cell (10A) to another cell (10B) different from both the source cell (10A) and a target cell (10C) of a handover from the source cell (10A), in response to receiving a first message (S105) that is issued when a radio terminal (2) that has experienced a failure involving disconnection of a radio link connection in the source cell (10A) or in the target cell (10C) attempts to re-establish the radio link connection to the other cell (10B). This contributes to updating the neighbour-cell relations in response to detection of a handover failure.


In order to set optimal wireless parameters, a wireless base station includes: a wireless parameter control unit (402) configured to determine whether it is necessary to perform wireless parameter optimization in an own wireless base station; and a determination unit (404) configured to determine whether another wireless base station performs wireless parameter optimization in the another wireless base station when the wireless parameter control unit determines that it is necessary to perform the wireless parameter optimization. The wireless parameter control unit (402) performs wireless parameter optimization in the own wireless base station when the determination unit determines that the another wireless base station does not perform wireless parameter optimization in the another wireless base station. The wireless parameter control unit cancels to perform wireless parameter optimization in the own wireless base station when the determination unit determines that the another wireless base station performs wireless parameter optimization in the another wireless base station.


The present application relates to a radio base station as a handover source in a mobile communication system, and to a handover control method for a radio base station as a handover source, wherein a measurement report message is received from a mobile station wherein the measurement report message includes information on a received power of a reference signal between the mobile station and a radio base station as the handover target which is measured by the mobile station; it is decided whether the mobile station is to be handed over from the radio base station as the handover source to the radio base station as the handover target, based on the measurement report message from the mobile station, and context information necessary for communication with the mobile station is transmitted to the radio base station as the handover target after the decision that the mobile station is to be handed over from the radio base station as the handover source to the radio base station as the handover target, wherein the context information includes the information on the received power of a reference signal.

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