Abstract: Provided is a communication system including: one or more wireless stations that perform wireless communication with one or more terminals; a plurality of distributed stations connected, directly or via another device, to the one or more wireless stations; a cooperation information collection unit that acquires, at a predetermined cycle, cooperation information indicating a state of communication between the plurality of distributed stations and the one or more terminals; an optical path switching control unit that controls switching of an optical path between the one or more wireless stations and the plurality of distributed stations when it is determined, on the basis of the cooperation information, that the switching of the optical path between the one or more wireless stations and the plurality of distributed stations is required; and a sleep control unit that causes each of the distributed stations that can sleep to transition to a sleep state after the switching of the optical path is performed.

Abstract: According to an aspect of the present invention, there is provided a signal transfer system that transfers a signal from one communication device to another communication device, the signal transfer system including an information acquisition unit that acquires network transfer information that is information regarding a traffic flow for each traffic flow from the one communication device to the other communication device; and a communication control unit that executes an adjustment process that is a process of reducing a waiting time for a frame on the basis of the network transfer information acquired by the information acquisition unit.

Abstract: A switching control apparatus calculates a traffic amount in a predetermined period of each first transmission apparatus that is a transmission apparatus of a predetermined layer on the basis of allocation of radio resources to a terminal that wirelessly transmits a signal to a lowermost transmission apparatus among a plurality of transfer apparatuses that constitute a communication network hierarchized into a plurality of layers and transfer a received signal to a layer next above. The switching control apparatus calculates a processing capability predicted to be required for each second transmission apparatus which is a transmission apparatus of a layer next above the first transmission apparatus on the basis of the traffic amount of the first transmission apparatus.

Abstract: Provided is a communication system comprising: at least one base station accommodating a wireless terminal; at least one transfer device which transfers, to a higher level, an uplink communication of the wireless terminal received via the base station; and a transfer device controller which controls the at least one transfer device, and the communication system further includes: an information acquisition unit for acquiring information regarding a wireless communication for each quality-of-service class between the base station and the wireless terminal; a rate determination unit for determining, for each of the quality-of-service classes, a shaping rate for traffic shaping such that a packet loss caused by congestion does not occur, on the basis of the information regarding the wireless communication for each quality-of-service class; and a communication control unit for executing, for each quality-of-service class, the traffic shaping at the higher level to the base station on the basis of the shaping rate

Abstract: A first transmission apparatus receives a data signal transmitted by a communication apparatus from a lower transmission apparatus sets the received data signal in a data unit, and transmits the data unit. A second transmission apparatus receives the data unit transmitted by the first transmission apparatus. An electric power controller calculates an arrival start timing that is a timing at which the data unit including a data signal transmitted from a communication apparatus starts to arrive at the second transmission apparatus on a basis of a code rate and a size of a data transmission block used when the communication apparatus transmits the data signal, and performs control such that a sleep state of a signal processor that performs processing on the data unit in the second transmission apparatus is ended before the arrival start timing.

Abstract: A control device includes an acquisition unit that acquires information from a distributed station that notifies the information related to one or more events occurred within a predetermined time period at a predetermined notification frequency, an information analysis unit that executes analysis processing on the information, a frequency derivation unit that derives an occurrence frequency of the information, a load derivation unit that derives a load of analysis processing of the information, and a frequency control unit that controls the predetermined notification frequency with a frequency lower than the occurrence frequency as an upper limit on the basis of at least one of an analysis result of the information, an occurrence frequency of the information, and a load of analysis processing of the information.

Abstract: A signal transfer system including a first signal transfer control device associated with a first network, and a second signal transfer control device associated with a second network connected to the first network via an intermediate node, in which the first signal transfer control device includes a first communication unit that transmits first schedule information at a predetermined notification cycle, and a second communication unit that transmits a trigger signal on the basis of a change amount of traffic of the first network, and the second signal transfer control device includes an acquisition unit that acquires the first schedule information at the predetermined notification cycle, a third communication unit that acquires the trigger signal, a change amount determination unit that, when the trigger signal is acquired, determines whether or not the change amount of traffic of the first network is equal to or greater than a threshold on the basis of the first schedule information, an information update u

Abstract: According to an aspect of the present invention, there is a wireless communication system including: a plurality of end wireless devices that include an antenna and transmit and receive signals to and from a wireless terminal which is a communication target; a plurality of transfer devices that transfer signals which are transmitted and received by the wireless terminal which is a communication target and the end wireless device; and a transfer management device that, in a case where communication status information indicating a status of communication between the wireless terminal and the end wireless devices is received, executes a transfer route control process of controlling paths between the plurality of transfer devices on the basis of the received communication status information, wherein the end wireless devices execute a switching process of controlling operations of the end wireless devices relating to communication between the end wireless devices and the wireless terminal on the basis of the commu

Abstract: A control device including a collection unit that acquires, at a predetermined cycle, cooperation information, which is information indicating a communication state between a communication system that includes a wireless station including an antenna and an allocation device that allocates a wavelength, and a terminal to be communicated, an analysis unit that analyzes the communication state in the communication system on the basis of the cooperation information, and an allocation control unit that controls execution of wavelength allocation by the allocation device on the basis of an analysis result of the analysis unit.

Abstract: A communication system including one or more base stations that accommodates wireless terminals, one or more transfer apparatuses that transfer uplink communication of the wireless terminal received via the base station to an upper side, and a transfer apparatus controller that controls the one or more transfer apparatuses includes an information acquisition unit that acquires information on wireless communication between the base station and the wireless terminal for each traffic flow, a rate determination unit that determines a shaping rate of the traffic shaping for each traffic flow, so that delay jitter in the base station is mitigated on an upper side with respect to the base station, on the basis of the information on the wireless communication for each traffic flow, and a communication control unit that executes traffic shaping on the upper side with respect to the base station on the basis of the shaping rate determined by the rate determination unit.

Abstract: The signal transfer device receives a periodically transmitted periodic signal and transfers the periodic signal in a reserved window. A control device that controls a signal transfer device includes a storage device configured to store reference information indicating a transmission amount and a transmission period of the periodic signals of each of a plurality of flows received by the signal transfer device. The control device further includes a processor that executes window setting processing based on the reference information. In the window setting processing, the control device sets a schedule of a plurality of windows for each of the plurality of flows in the signal transfer device based on the reference information, and instructs the signal transfer device to reserve the plurality of windows according to the schedule.

Abstract: A signal transfer device according to an embodiment receives a plurality of signals including an aperiodic signal having a higher priority than other signals, respectively holds the plurality of received signals by a plurality of buffers according to the priority, acquires signal information including at least one of a time at which the aperiodic signal is transmitted or received and a data length of the aperiodic signal, predicts a timing at which the aperiodic signal arrives at the buffer based on the acquired signal information, sets reservation of a period for transmitting the aperiodic signal with priority over other signals based on the predicted timing, controls the plurality of buffers to output the aperiodic signal with priority over other signals in the period in which the reservation is set, and transmits the signal output by the buffer.

Abstract: Provided are a communication control device, a communication control system, a communication control method, and a communication control program that make it difficult to reduce band utilization efficiency. In an OLT server 9b that is a communication control device, a transmission time storage unit 12 stores a transmission time of an optical signal between each ONU 3 and OLT 4. An optical transmission control unit 13 generates control information for controlling transmission start and transmission end of optical signals in each ONU 3. A failure detection suppression unit 15 calculates a first time at which the reception of the optical signal from an ONU 3p ends using control information and a transmission time.

Abstract: A user terminal 12-1 can wirelessly or preferentially connect to a router 14 to communicate with an upper network 18, and can communicate with another network 20 via a mobile line. An ONU 16 generates a disconnection notification in a case where congestion exceeding a reference is recognized in the PON communicating with the upper network 18, and generates a connection notification when the congestion is resolved. The router 14 stores the user terminal 12-1 that can communicate with another network 20 among the user terminals 12-1 to 12-4 being connected. In addition, the router 14 disconnects the connection with the user terminal 12-1 that can communicate with another network 20 when the disconnection notification is generated, and attempts reconnection with the user terminal 12-1 that has been disconnected when the connection notification is generated.

Abstract: A system for automatically painting the external wall of a building, in which a support is suspended from a hoist apparatus disposed on the roof of the building, and a painting apparatus is supported by the support in such a manner as to be movable horizontally. The painting apparatus includes a mechanism for advancing and retracting, in a direction normal to the wall surface, a painting hood having a spray gun disposed therein, a mechanism for swinging the hood laterally, and a frame formed of mounted on the peripheral edge of an opening of the hood which opposes the wall surface. When the painting is positioned opposite the wall surface, the frame is brought into close contact with the wall surface, thereby sealing the painting hood against the wall surface and preventing any scattering of paint mist. Since the painting hood has no rollers, it causes no degradation in the quality of the painted wall surface.

Abstract: The present invention discloses a method of continuously processing a ribbonlike material. The method is characterized by comprising a preliminary polishing step in which surface defects of a material pulled out from an uncoiler are removed and the surface of the material is semi-finished by abrasion in combination with electrolytic polishing, a final polishing step in which the surface of the material is mirror-finished by abrasion in combination with electrolytic polishing, a washing and drying step in which the material is washed and dried with extraneous matter on the surface of the material washingly removed, a surface inspection step in which the thus finished surface of the material is inspected as to surface roughness and defects, a surface protection step in which a protective film is applied to the finished surface of the material, and a press step in which the material is cut into a predetermined size.

Abstract: The present application discloses an equipment for continuously processing a band-shape material comprising transverse sliding shafts disposed on a base table, a basal board which freely slides transversely along said transverse sliding shafts, transverse-feeding means by which said basal board is quickly and/or slowly moved transversely, vertical sliding shafts disposed on said basal board, a tool of abrasion in combination with elctrolytic polishing which freely slides vertically along said vertical sliding shafts, vertical-feeding means by which said tool is moved vertically against said basal board and a polishing head which is disposed on said tool and composed of electrodes for electrolysis and abrasive matters for abrasion and by which continuously sent band-shape material is polished.