Nec Corporation

Nec C Orporation

Anan Sawabe

Takanori Iwai

Kosei Kobayashi

Hiroshi Yoshida

Yusuke Shinohara

Kousuke Nogami

Sweety Suman

A remote control system () according to the present disclosure includes: a delay jitter specification unit () configured to specify a delay jitter distribution in a network that performs communication with a mobile object serving as a target to be monitored; a degree-of-risk specification unit () configured to specify a degree of risk of the mobile object on the basis of the specified delay jitter distribution, and a state of the mobile object; and a control unit () configured to control the mobile object on the basis of the specified degree of risk.

Remote control apparatus, remote control method, and remote control system

In order to make it possible to control a delay jitter in packet transmission control, a packet control system () includes: an acquisition unit () that acquires a packet associated with a delay jitter which is requested; an enqueue unit () that enqueues the packet into a queue at a level which corresponds to the delay jitter associated with the packet among a plurality of queues which are classified into levels such that delay jitters are different for the respective levels; and a dequeue unit () that dequeues, in accordance with a dequeue timing specified for the queue, the packet which has been enqueued into the queue at the level corresponding to the delay jitter associated with the packet, and that sends the packet which has been dequeued to a network.

Packet control system, packet control method, and packet control apparatus

A remote monitoring system () according to the present disclosure includes: an observation unit () configured to observe traffic in a network that corresponds to a movement section where a mobile object moves, the mobile object serving as a target to be monitored; and a specification unit () configured to divide the movement section on the basis of the observed traffic, and specify a delay jitter distribution in each divided section.

Remote monitoring apparatus, remote monitoring method, and remote monitoring system

A priority control apparatus includes: load information acquisition part which acquires communication load information per priority at relay apparatus that controls allocation of communication resources relative to individual communication depending on a priority that is set for the individual communication between two or more communication apparatuses; communication quality acquisition part which acquires communication quality as to control target communication; and priority control part which calculates a first priority, with which communication quality as to the control target communication can satisfy a predetermined condition, by using a mathematical model that indicates a relationship between a piece of communication load information before a priority as to the control target communication is set as the first priority and a communication quality when the priority as to the control target communication concerned is set as the first priority, and which sets the calculated first priority as the priority of the control target communication concerned.

Priority control apparatus, priority control method, and non-transitory computer-readable storage medium storing program

In order to provide a communication control method that enables resolution of a distributed moving image to be changed, a communication apparatus includes a first estimation section, and a calculation section. The first estimation section estimates a first resolution of a distributed moving image, based on traffic of the distributed moving image. The calculation section calculates a first bit rate for distributing the distributed moving image at a second resolution, based on the first resolution. The communication apparatus may further include a control section that performs traffic control of the distributed moving image, based on the first bit rate. The first estimation section may estimate the first resolution by using statistical information on resolutions of a plurality of distributed moving images.

Communication control method, communication apparatus, and communication system

In order to enable stabilizing control of communication in a communication network, a system according to an aspect of the present disclosure includes: an obtaining means for obtaining work-related information related to human work in network operation; and a training means for training a machine learning based controller for controlling communication in a communication network, based on the work-related information.

System, method, and control apparatus

To perform flexible communication control according to variation in traffic so as to satisfy a plurality of QoS (Quality of Service) indexes. A communication apparatus () according to the present invention includes: a distribution unit () configured to distribute, based on a distribution rule for satisfying a plurality of different QoS indexes set in a plurality of queues (to), respectively, a received packet to any one of the plurality of queues; and an update unit () configured to update the distribution rule based on performance information of each of the plurality of queues, the performance information being calculated for the QoS index set in each of the queues.

Communication apparatus, communication control system, communication control method, and non-transitory computer-readable medium storing program for at least distribution of a packet to a queue and update of a distribution rule thereof

An estimating apparatus () according to the present invention includes a plurality of feature quantity calculating units (to) configured to implement processing of calculating, from a communication traffic, a differing feature quantity group for each of a plurality of types of control attributes relating to communication control, the plurality of feature quantity calculating units being each associated with each of the plurality of types of control attributes, a calculating unit () configured to calculate, with regard to each of two or more of the plurality of types of control attributes, each of the feature quantity groups from the communication traffic by use of the feature quantity calculating unit being associated with each of the control attributes, and an estimating unit () configured to estimate an attribute value of each of the two or more control attributes from each of the calculated feature quantity groups.

Estimating apparatus, system, method, and computer-readable medium, and learning apparatus, method, and computer-readable medium

A throughput division means () divides a throughput of a communication between a video delivery server configured to deliver, in a plurality of delivery modes, video data to a user terminal device used by a user and the user terminal device in a delivery period of the video data, according to a period of each delivery mode. A playback bit rate estimation means () estimates a playback bit rate of the video data, based on a throughput divided according to a period of the delivery mode. Thus, estimation precision of a video playback bit rate can be improved even when a video delivery server delivers video data in a plurality of delivery modes.

Video playback bit rate estimation device and method, non-transitory computer-readable medium containing program, and communication quality measurement device

A traffic analysis apparatus includes: a first means that estimates a state sequence from time-series data of communication traffic based on a hidden Markov model, and groups, into one group, a plurality of patterns with resembling state transitions in the state sequence to perform extraction of a state sequence, with taking the plurality of patterns grouped into one group as one state; and a second means that determines an application state corresponding to the time-series data based on the state sequence extracted by the first means and predetermined application characteristics.

Traffic analysis apparatus, system, method, and program

To realize real-time estimation when estimating the type and state of an application from time-series data of communication traffic. A communication traffic analyzing apparatus of the present invention has a state transition model generating unit configured to generate a probabilistic state transition model from time-series data of communication traffic, at each predetermined timing, a state transition model update unit configured to update a state transition model when a difference between the state transition models at two timings generated by the state transition model generating unit is greater than or equal to a predetermined difference and a communication state of network satisfies a predetermined condition, and an application type and state estimating unit configured to estimate a type and a state of an application using the updated state transition model.

Communication traffic analyzing apparatus, communication traffic analyzing method, program, and recording medium

A traffic analysis apparatus includes an information amount calculation part that calculates information amounts of a plurality of items of time series data relating to communication traffic and an input information selection part that selects at least one item of time series data based on the information amounts of the plurality of items of time series data.

Traffic analysis apparatus, method, and program

A communication system according to the present invention includes: a transmission-side apparatus that transmits a packet train composed of a plurality of estimation packets for estimating an available bandwidth; and a reception-side apparatus that receives the packet train, stores one or more lower-limit expansion ideal curves, one or more in-range ideal curves, and one or more upper-limit expansion ideal curves; calculates an actual amount of increase in delay occurring in the respective estimation packets based on a reception time of the estimation packet; selects an ideal curve most similar to the increase tendency of a delay indicated by the calculated amount of increase in delay, from among the lower-limit expansion ideal curve, the in-range ideal curve, and the upper-limit expansion ideal curve; and estimates the available bandwidth, based on a selection result on the ideal curve.

Communication system, available-bandwidth estimation method, and recording medium

In order to provide a communication session log analysis device allowing integration of communication session logs that makes it p to provide web session time with which quality of user experience can be evaluated with high precision, a communication session log analysis device according to the present invention that updates information relating to a web session includes: a web session integration means for integrating, when time elapsed from a start time of a reference communication session to a start time of one communication session is equal to or less than a threshold value, the one communication session into the same web session as the reference communication session, a threshold value setting means for setting the threshold value, based on a predetermined probability distribution, and a filtering means for extracting the web session determined as valid by statistical testing based on statistical information relating to a configuration of the web site.

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Tokyo, Japan

Anan Sawabe