Abstract: A specification unit (15b) specifies a path of traffic on the basis of past flow information. A determination unit (15c) determines a network device on the specified path for traffic related to a designated event.

Abstract: A communication system is a communication system comprising one or more control apparatuses and one or more user apparatuses, a first user apparatus or first control apparatus responds with a second control signal to a first control signal transmitted from a second user apparatus or second control apparatus, and the second user apparatus or second control apparatus determines whether a signal path including sections between the first user apparatus or first control apparatus and the second user apparatus or second control apparatus is normal, on the basis of the second control signal used in the response.

Abstract: An acoustic signal output device includes first and second signal output units disposed on right- and left-ear sides of temples of glasses. The first and second signal output units respectively output signals for causing first and second acoustic signal output units worn on different ears to output monophonic acoustic signals. An attenuation characteristic of the first monophonic acoustic signal between predetermined first and second points, the second point being farther from the first acoustic signal output unit, is controlled so that an attenuation rate is equal to or less than a predetermined value smaller than an attenuation rate caused by air propagation, or an attenuation amount is equal to or greater than a predetermined value larger than an attenuation amount caused by air propagation.

Abstract: A base station including: an information acquisition unit configured to acquire control information regarding communication with one or more terminals for each traffic flow exchanged between the one or more terminals and an upper device; and a control unit configured to generate a dedicated optical path in any section to the upper device in a case where it is determined that the dedicated optical path for transferring a specific traffic flow is necessary on a basis of the control information acquired for the each traffic flow.

Abstract: An access point of an embodiment includes a plurality of wireless signal processing units and a management unit. The management unit establishes a plurality of links by using the plurality of wireless signal processing units, and allocates a service period that gives priority to transmission and reception of low-latency traffic to each of the plurality of links in an allocation pattern in which no break of the service period occurs in switching of the service period among the plurality of links.

Abstract: An optical communication system includes: a master station device; and a slave station device configured to perform transmission and reception of a radio signal via an antenna. Based on a reception strength of a radio signal in each of a plurality of the slave station devices, the master station device generates control information for controlling transmission operation of the radio signal performed in the slave station device, and transmits, to the slave station device, an optical signal including an analog main signal and a digital signal including the generated control information. The slave station device acquires the control information from the digital signal included in the optical signal received from the master station device, and switches a content of the transmission operation of the radio signal in accordance with the acquired control information.

Abstract: An optical transmission system includes an optical transmitter and an optical receiver. The optical transmitter includes an operation mode control unit that sets one of a first operation mode for generating a signal of a low symbol rate and a second operation mode for generating a signal of a high symbol rate, and a transmission signal generation unit that generates a transmission signal according to the operation mode. The optical receiver includes an optical coherent receiver, a digital signal processing unit, and a reception data demodulation unit.

Abstract: According to the present disclosure, there is provided a transmission control device including: a function of calculating, in a plurality of data sources, a satisfaction level with a data transfer requirement for each data source; and a function of performing transmission control of the plurality of data sources so that a sum of the satisfaction levels of the plurality of data sources becomes larger.

Abstract: A communication system includes: an optical switch provided in a signal path connecting a first communication device to a second communication device; a splitting/switching unit disposed outside of the optical switch, configured to split or switch an optical signal transmitted from the first communication device and passed via the optical switch, configured to split the optical signal to the second communication device and the control unit when the optical signal is split, and configured to be switched toward the second communication device or the control unit when the optical signal is switched; and the control unit configured to terminate the optical signal from the splitting/switching unit and execute transmission confirmation of the signal path.

Abstract: The present disclosure relates to a wireless relay device and a wireless relay method for relaying a carrier wave transmitted by a radio signal from an upper-level radio station. The present disclosure is a wireless relay device that relays a carrier wave transmitted by a radio signal from an upper-level radio station, and is configured to execute modulation system conversion processing of converting a modulation system of the carrier wave into a modulation system having a lower multi-value number; and bandwidth conversion processing of expanding a frequency band of the carrier wave so that transmission capacities of the carrier wave become equal before and after the modulation system conversion processing.

Abstract: To cause a user of earphones capable of simultaneously hearing an ambient sound and an information sound to distinguish the information sound from the ambient sound. Therefore, an information presentation apparatus according to a first aspect of the disclosed technology includes a signal processor that converts an information sound into an identifiable signal. The identifiable signal is a signal obtained by subjecting the information sound to stereophonic sound processing or a signal obtained by changing a tone of the information sound. Furthermore, an information presentation apparatus according to a second aspect of the disclosed technology includes a signal processor and a peripheral device. The signal processor generates distinguishing information from the information sound. The peripheral device operates according to the distinguishing information, or displays the distinguishing information.

Abstract: An analog RoF system includes a master station device and a slave station device configured to perform transmission and reception of a radio signal through an antenna. The master station device generates control information that is used to control a transmission operation and a reception operation of the radio signal, and transmits an optical signal that includes an analog main signal and a first digital signal including the generated control information, to the slave station device through an optical fiber. The slave station device acquires the control information from the first digital signal included in the optical signal that has been received from the master station device through the optical fiber, and performs a switching process between the transmission operation and the reception operation of the radio signal through the antenna, based on the acquired control information.

Abstract: This propagation loss estimation method includes creating an outdoor 3D CAD model; extracting a profile of a piece of data concerning a terrain and a clutter between the base station and the terminal from the outdoor 3D CAD model; calculating a virtual diffraction edge based on the base station, the terminal, and the profile; and calculating a diffraction loss for radio waves passing through the virtual diffraction edge. Furthermore, the virtual diffraction edge is an intersection of a straight line whose slope is a maximum when the base station is set to be a starting point and each point of the profile is set to be an ending point and a straight line whose slope is a maximum when the terminal is set to be a starting point and each point of the profile is set to be an ending point.

Abstract: An extraction unit (21) extracts a common page transition pattern for each of a completion flow line reaching an action or a state indicating completion and a withdrawal flow line withdrawing without reaching the action or the state indicating the completion from a plurality of pieces of flow line information indicating transition of the action or the state for each user, a conversion unit (22) creates a matrix in which presence or absence of appearance for each pattern is stored from the pattern for each user, performs dimension compression for the matrix, and converts the matrix into latent variables for each user, a creation unit (25) creates a decision tree for classifying the completion flow line and the withdrawal flow line on the basis of the latent variable for each user, and a visualization unit (29) visualizes information related to the classification of the completion flow line and the withdrawal flow line on the basis of the decision tree.

Abstract: One aspect of the present invention is an antenna device including N (N is an integer of 3 or more) antenna elements that receive a sound wave or a radio wave, in which the antenna elements are arranged at positions where a steering vector corresponding to an incidence angle ? of a certain sound wave or radio wave and a steering vector corresponding to an incidence angle ?_d (?_d is ??/2 to +?/2) of another sound wave or radio wave are not primary dependent on each other.

Abstract: One aspect of the present invention is an information processing device including a function achieved by software executed in a virtual environment to which virtual hardware resources including an accelerator are allocated and an orchestrator, in which: the orchestrator allocates a transfer source memory area and a transfer destination memory area for cooperation target data between the functions; and the function includes a control unit that rewrites an address of the transfer source memory area or transfer destination memory area which is referred to when a function of an own virtual environment performs data cooperation with a function of another virtual environment to an address of the transfer source memory area or transfer destination memory area allocated by the orchestrator.

Abstract: A signal processing resource switching device includes a function proxy execution unit configured to accept a “function name?argument” from an application unit and notify the application of argument data of a function when the function is executed or ended by a calculation resource, an accelerator failure detection unit configured to detect a failure of an accelerator, and an offload destination calculation resource determination unit configured to determine an unfailed and available resource among the calculation resources, and the function proxy execution unit performs offloading on the resource determined by the offload destination calculation resource determination unit.

Abstract: An embodiment is a phase adjustment circuit includes a sine wave output circuit, a first multiplier, a second multiplier, and an adder. The sine wave output circuit is configured to output two sine wave signals of a fixed phase difference. The first multiplier is configured to multiply an amplitude of a first sine wave signal output from the sine wave output circuit by a first variable to generate a first output signal. The second multiplier is configured to multiply an amplitude of a second sine wave signal output from the sine wave output circuit by a second variable to generate a second output signal. The adder is configured to add the first output signal from the first multiplier and the second output signal from the second multiplier.

Abstract: A wireless communication system according to an embodiment includes: a plurality of access points that perform wireless communication with wireless terminals; and a centralized control device that centrally controls each of the access points and relay devices, and the centralized control device calculates a ratio of a transmittable traffic volume to an accommodated traffic volume based on an allocated channel and bandwidth as a utility function, sets a value corresponding to a transmittable traffic volume of a higher-level device in a relay configuration as an accommodated traffic volume of a lower-level device on the basis of each of the calculated utility functions, and performs control to change the channel and the bandwidth of each of the plurality of access points and the plurality of relay devices such that a sum of the utility functions calculated after setting the accommodated traffic volume is maximized.

Abstract: An object of the present invention is to provide a control system, a control method, a controller, and a program capable of guaranteeing a band allocated to each traffic flow while following a maximum throughput of a wireless network which changes from moment to moment. The control system according to the present invention includes a terminal and an access point that transmit packets to each other via the wireless network, a telemetry apparatus that ascertains a maximum throughput of the wireless network, and a controller that performs transmission control on the terminal and the access point, and the controller determines the band control value for each traffic flow on the basis of the maximum throughput notified of by the telemetry apparatus and the required band for each traffic flow notified of by at least the terminal, and notifies the terminal and the access point of the band control value.