Abstract: Provided is an optical transmission system including: an optical transmission apparatus; an optical reception apparatus; a communication device that is a delay measurement target; and a transmission device that transmits a signal between the optical reception apparatus and the communication device, in which the optical transmission apparatus includes a main signal transfer unit that transmits a main signal, the transmission device transmits, to the optical reception apparatus, a first main signal transmitted from the optical transmission apparatus and transmitted via the communication device and a second main signal transmitted from the optical transmission apparatus and not transmitted via the communication device, and the optical reception apparatus includes a reception processing unit that measures a delay occurring in the communication device by using the first main signal and the second main signal transmitted from the transmission device.

Abstract: In a wireless communication system, a base station device communicates with a terminal device via any relay device (reconfigurable intelligent surface). The base station device stores a CSI when passing through the relay device in association with the object arrangement information. When the current object arrangement information is similar to the stored past object arrangement information, the base station device determines a relay device to be used at the present time on the basis of each CSI stored in association with the past object arrangement information. According to this, it is possible to reduce overhead for acquiring the CSI, and simultaneously execute the use determination of the plurality of reconfigurable intelligent surfaces, by re-using the CSI.

Abstract: An optical phase shifter in which a phase shift amount is kept constant in a wide wavelength region is provided. One aspect is the optical phase shifter constituting of two waveguides of a basic width, and configured so that two lights propagating through each waveguide have a phase difference, including a different type waveguide arranged in at least one of the two waveguides and having a waveguide width different from the basic width, and a configuration of the different type waveguide and a parameter of the two waveguides and different type waveguide are optimized.

Abstract: The present disclosure is a base station system S that connects each of base station functional units that provides each of radio schemes and each of antenna units in each of provision areas via an optical fiber section, the base station system including passive light functional units disposed between each of base station functional units and each of antenna unit and including each downlink signal output port to which each downlink signal wavelength is allocated and each uplink signal output port to which each uplink signal wavelength is allocated and an optical switch disposed between each of the antenna units and the passive light functional units, accommodates some of each of the radio schemes, and switches to which one of the provision areas the some of the radio schemes are provided.

Abstract: A reflection unit of a relay apparatus includes a plurality of reflection elements capable of applying independent phase shifts to an incoming wave from a transmission point. The reflection unit estimates a distance between the relay apparatus and a reception point based on terminal information transmitted from the reception point. The number of divisions for grouping the plurality of reflection elements is determined based on the distance. The plurality of reflection elements are grouped into one or more reflection element groups according to the division number. The position of the reception point is estimated based on the terminal information. Each of the reflection element is applied a phase weight so that each of the reflection element groups generates a beam toward the position of a reception point.

Abstract: A radio parameter control method is performed by a control device that includes a memory and a processor, for a plurality of base stations constituting a radio network. The method includes: collecting radio environment information in the radio network and communication quality information for each communication area provided by each of the base stations; determining whether to perform radio parameter control based on the communication quality information; calculating a radio parameter for at least one of the base stations based on the radio environment information in a case where it is determined that the radio parameter control is to be performed; and setting the calculated radio parameter in said at least one of the base stations.

Abstract: A road boundary detection device is a road boundary detection device that acquires a set of lines corresponding to a road boundary from point cloud data as road boundary information. The road boundary detection device includes: a candidate point detection unit that detects each point of road boundary candidates corresponding to candidates of a road boundary from the point cloud data; a candidate point clustering unit that clusters each point of the road boundary candidates; an adjacent cluster reduction unit that reduces a cluster from a distribution of points in clusters in an adjacency relationship by using a predetermined cluster reduction method; a line fitting unit that fits one or more straight lines or curved lines to one or more of the clusters and output fitted lines as road boundary candidates; a line connecting unit that connects some of the fitted lines by using a predetermined analysis method; and an information output unit that outputs a calculated line as the road boundary information.

Abstract: A work terminal (10) notifies a remote terminal (20) of a cooperation display ID of a local UI component that is a UI component corresponding to a UI component displayed on the work terminal (10) and is displayed on the remote terminal (20). The remote terminal (20) then displays a local UI component corresponding to the cooperation display ID of the local UI component received from the work terminal (10). Subsequently, in a case where input information is input to the displayed local UI component, the remote terminal (20) transmits the input information to the work terminal (10). The work terminal (10) then reflects the input information on the UI component corresponding to the local UI component.

Abstract: A wireless communication system includes one or more communication devices located in a communication target area, and a relay device mountable on a moving body, in which the relay device includes a timing control unit that generates a transmission permission signal that is a signal representing transmission permission of an uplink signal, and a first transmission unit that transmits the transmission permission signal to the communication target area by a beam. The communication device includes a reception unit that obtains the transmission permission signal from the relay device, a transmission control unit that determines an earlier transmission timing as an elevation angle of the relay device viewed from the communication device is larger on a basis of the transmission permission signal, and a second transmission unit that transmits the uplink signal to the relay device at the transmission timing.

Abstract: A wireless communication system includes: a communication control device; and a plurality of wireless base station devices capable of forming a plurality of beams and transmitting signals, the communication control device including: an estimation unit configured to estimate whether or not a range of a first beam emitted by a first wireless base station device among the plurality of wireless base station devices is correlated with a range of a second beam emitted by a second wireless base station device different from the first wireless base station device; and a use prohibition unit configured to prohibit the first wireless base station device from using the first beam or prohibit the second wireless base station device from using the second beam in a case where the estimation unit estimates that the range of the first beam is correlated with the range of the second beam.

Abstract: In a light receiving element, a first semiconductor layer that is formed on the upper surface of a substrate and is formed with a semiconductor of a first conductivity type, a light absorbing layer formed with a semiconductor, a second semiconductor layer formed with a semiconductor of a second conductivity type, a first electrode that is formed in contact with the second semiconductor layer, is formed with a metal, and functions as a reflective film, and a second electrode formed on the first semiconductor layer are formed in a vertical direction on the upper surface of the substrate. In the light receiving element, a slope that is neither perpendicular nor parallel to the substrate plane is formed on the substrate, and incident light that has perpendicularly entered the slope is made to enter the light absorbing layer obliquely with respect to the vertical direction.

Abstract: An object of the present invention is to provide an optical fiber testing device and an optical fiber testing method capable of acquiring both unidirectional crosstalk and bidirectional crosstalk of an uncoupled multicore fiber in a short time and with a little man-hour.

Abstract: A filter setting device (20) includes a shared filter DB (21) having a shared filter information table (211) in which information of each shared filter is recorded and a shared filter application destination table (212) in which a transfer device of an application destination of each shared filter is recorded; a shared filter creation unit (22) for determining new creation of a shared filter or diversion of an existing shared filter by referring to a shared filter information table (211) and a shared filter application destination table (212) on the basis of an instruction of a host server (10), in the L3 transfer technology; and a configuration input unit (23) for generating a configuration on the basis of a determination result of the shared filter creation unit (22), and setting a shared filter to be shared among a plurality of IF in a transfer device (30).

Abstract: An imaging element, includes a pixel array in which a plurality of pixels including photoelectric conversion elements are arranged in a two-dimensional array, and an optical element array in which optical elements composed of a plurality of columnar structure bodies arranged opposite to a pixel array and guiding incident light to a corresponding photoelectric conversion element are arranged in a two-dimensional array, wherein the plurality of columnar structure bodies are formed in a width having a phase characteristic for guiding light to a photoelectric conversion element directly below a columnar structure body in accordance with an incident angle of the incident light of each columnar structure body when viewed in a plan view and are formed at a same height when viewed in a side view.

Abstract: Provided is an open-ear acoustic signal output device worn on both ears, including a first signal output unit that outputs a first output signal for outputting a first monophonic acoustic signal from a first acoustic signal output unit worn on one ear, and a second signal output unit that outputs a second output signal for outputting a second monophonic acoustic signal from a second acoustic signal output unit worn on another ear.

Abstract: An extraction unit (22) extracts a pattern that is a set of frequent actions or states from a plurality of pieces of flow line information indicating transitions of actions or states for each user, an unnecessary pattern exclusion unit (23) excludes a pattern in which the last action or state of the pattern does not correspond to a purpose of analysis among the extracted patterns, and a judgement unit (24) judges a pattern in which an appearance frequency in a flow line DB (20) is equal to or more than a threshold value for each of the extracted patterns as the analysis target pattern.

Abstract: A base station according to an embodiment includes first and second wireless signal processing units, and a link management unit. The link management unit establishes a multi-link with a terminal apparatus by using the first and second wireless signal processing units, and sets an anchor link to be used in transmission and reception of control information regarding an operation of the multi-link. The link management unit transmits a first wireless frame requesting change of the anchor link by using the first wireless signal processing unit set to the anchor link, and changes the anchor link from the first wireless signal processing unit to the second wireless signal processing unit if either the first wireless signal processing unit or the second wireless signal processing unit receives a positive response from the terminal apparatus after the first wireless frame is transmitted.

Abstract: A wireless communication system according to one embodiment: collects terminal position information indicating a position of each of a plurality of terminals, power intensity information indicating an intensity of received power, and residual amount information indicating a residual amount of stored power of a storage battery of each of the terminals; calculates allocated power with respect to each of the terminals of the base station based on the collected terminal position information, the power intensity information, and the residual amount information; calculates a parameter that optimizes bandwidth allocation and power use efficiency with respect to each of the terminals of the base station so as to minimize power consumption while raising the power use efficiency of the entire system; and controls use efficiency of transmitted power of an RF signal transmitted by each of the base stations to each of the terminals according to the parameter.

Abstract: A detection device (10) learns a machine learning model (typing characteristic model) so as to minimize an abnormality degree of a user himself/herself with respect to typing by machine learning (for example, unsupervised machine learning) using free typing of the user himself/herself. Thereafter, the detection device (10) calculates a typing abnormality degree of a detection target by using the machine learning model after learning, judges that the typing is performed by a person other than the user himself/herself, and detects abnormality when the calculated abnormality degree exceeds a predetermined threshold value.

Abstract: A delay time measurement server calculates a video display delay time representing the latency from video transmission to display on a client monitor. The server encodes a specific video, such as a countdown or moving symbol, and transmits it to the monitor. A user provides an input upon observing the specific video, which generates a signal. The server measures the elapsed time between transmitting the video and receiving the generated signal. The server determines the video display delay time based on this elapsed time, accounting for the user's reaction time and network command latency.