Abstract: A similarity calculation system calculating a distance between a first vector stored in a similarity calculation apparatus and a second vector entered from an input terminal wherein the similarity calculation apparatus transmits to the input terminal a ciphertext of each element of the first vector and a weighted distance table with respect to combinations of possible values of the elements of the first vector and the second vector, and the input terminal refers to the weighted distance table to calculate a ciphertext of element distances for all combinations of the value of a single element of the second vector and possible values of elements of the first vector, calculates the ciphertexts of the sum of the element distances for each element of the second vector using additive homomorphic encryption, and transmits the ciphertext of the sum to the similarity calculation apparatus.

Abstract: The present disclosure provides a system capable of rapidly communicating information. In the present disclosure, an information processing apparatus including a first communication module configured to use a cellular communication network and a second communication module configured to use a wireless communication network other than the cellular communication network performs a predetermined process related to communication performed by the first communication module when receiving first data via the second communication module.

Abstract: This disclosure reduces power consumption of a vehicle. An information processing apparatus of this disclosure acquires information on a remaining battery level of a vehicle. The information processing apparatus determines, for each of multiple types of processing executed by one or more electronic control units of the vehicle, an execution mode to be set after a running system of the vehicle stops, according to the remaining battery level.

Abstract: An information processing apparatus for controlling wireless communication performed by a vehicle, the information processing apparatus comprises a controller comprising at least one processor configured to perform, when detecting a predetermined access point, establish wireless connection with the predetermined access point, wherein the controller prevents wireless connection to the predetermined access point at least during a first period from when the vehicle stops until a predetermined timing comes.

Abstract: A wireless communication apparatus including a first communication module configured to use a first communication network that is a cellular communication network and a second communication module configured to use a second communication network that is a communication network other than the cellular communication network, determines which of the first communication network and the second communication network is to be used to perform communication, based on a sign of departure of a vehicle.

Abstract: An information processing apparatus comprises a controller comprising at least one processor configured to, when a vehicle is in a service area of a predetermined wireless access point, provide a service corresponding to an identifier of the wireless access point for a driver of the vehicle.

Abstract: The present disclosure in its one aspect provides a wireless communication apparatus comprising a communication module configured to perform wireless communication with an external network of a vehicle; and a first antenna connected to the communication module, wherein the wireless communication apparatus is mounted at a position close to a roof panel of the vehicle.

Abstract: A wireless communication apparatus comprises a communication module configured to perform wireless communication with a network outside a vehicle; and a first antenna connected to the communication module, wherein the wireless communication apparatus is mounted inside an instrument panel of the vehicle.

Abstract: An in-vehicle device includes: an information receiving portion configured to receive request information for an external server to request transmission of pieces of vehicle information via a communication network; an information collection portion configured to collect the pieces of vehicle information from devices in a vehicle based on the request information received by the information receiving portion; an information accumulation portion configured to accumulate, in a memory, the pieces of vehicle information collected by the information collection portion; and an information transmission portion configured to transmit the pieces of vehicle information accumulated in the memory to the external server, wherein, when a remaining capacity of the memory becomes smaller than a threshold, the information accumulation portion accumulates, in the memory, vehicle information with a high priority by removing vehicle information with a low priority from the pieces of vehicle information.

Abstract: A communications device provided in a vehicle having a plurality of functions involving communication includes: a communications portion configured to use a communications standard designated for each of the functions; and a controlling portion configured to determine whether the communications standard is to be restricted from being used by the communications portion or not, in accordance with a state of the vehicle.

Abstract: An in-vehicle device includes: an information receiving portion configured to receive request information for an external server to request transmission of pieces of vehicle information via a communication network; an information collection portion configured to collect the pieces of vehicle information from devices in a vehicle based on the request information received by the information receiving portion; an information accumulation portion configured to accumulate, in a memory, the pieces of vehicle information collected by the information collection portion; and an information transmission portion configured to transmit the pieces of vehicle information accumulated in the memory to the external server, wherein, when a remaining capacity of the memory becomes smaller than a threshold, the information accumulation portion accumulates, in the memory, vehicle information with a high priority by removing vehicle information with a low priority from the pieces of vehicle information.

Abstract: A traffic management server is configured to determine a base station at which a handover occurs to a base station having a slower maximum communication speed as an area boundary base station, determine a terminal located within a coverage of the area boundary base station, and instruct a control apparatus included in a mobile network to limit a maximum usable bandwidth of the determined terminal.

Abstract: Provided is a technique of finely performing congestion determination and congestion control on a cellular communication system employing a C-RAN architecture. An instruction is given to a control device to acquire location information of a terminal in a cell of a C-RAN using a first message between network nodes, acquire a congestion indicator of the cell of the C-RAN using a second message between the network nodes, determine the occurrence of congestion of the cell based on the congestion indicator, identify a terminal staying in a cell in which congestion is occurring based on the location information of the terminal, and limit a maximum usable bandwidth of the specified terminal.

Abstract: A traffic management server is configured to determine a base station at which a handover occurs to a base station having a slower maximum communication speed as an area boundary base station, determine a terminal located within a coverage of the area boundary base station, and instruct a control apparatus included in a mobile network to limit a maximum usable bandwidth of the determined terminal.

Abstract: A multi-hop relay wireless communication system provided with an AGW (2), a policy controller (3), a base station (4), one or more relay stations (6), and a mobile station (7) collects data path setting information into the AGW (2) after the establishment of the wireless links between the base station and the relay stations and between the relay stations and the mobile station, selects a relay station (6) which becomes the data path from the one or more relay stations by using the collected information, and sets the optimal path from the AGW (2) to the mobile station (7).

Abstract: To realize a handover in which a gateway connecting to the access networks using different protocols is an anchor. In a communication system, the gateway holds a service identifier management table for converting a service identifier of different kind with the protocol into a PDN identifier, and at the time of handover, specifies a session to be held with the user identifier and the PDN identifier, selects the same PDN connected to the movement source, and reassigns the same IP address that has been already assigned at the movement source.

Abstract: A multi-hop relay wireless communication system provided with an AGW (2), a policy controller (3), a base station (4), one or more relay stations (6), and a mobile station (7) collects data path setting information into the AGW (2) after the establishment of the wireless links between the base station and the relay stations and between the relay stations and the mobile station, selects a relay station (6) which becomes the data path from the one or more relay stations by using the collected information, and sets the optimal path from the AGW (2) to the mobile station (7).

Abstract: To realize a handover in which a gateway connecting to the access networks using different protocols is an anchor. In a communication system, the gateway holds a service identifier management table for converting a service identifier of different kind with the protocol into a PDN identifier, and at the time of handover, specifies a session to be held with the user identifier and the PDN identifier, selects the same PDN connected to the movement source, and reassigns the same IP address that has been already assigned at the movement source.

Abstract: A pump turbine includes a runner connected to a generator motor, a water discharge controller for adjusting the quantity of water passing through the runner and a governor for detecting a rotational speed of the runner and controlling the water discharge controller to get a predetermined rotational speed of the runner. Upon a load rejection which shuts off the generator motor from an electric power system, the governor is controlled to make a target speed value of the runner after a load rejection higher than a target speed value before the load rejection. The target speed value is a reference speed to be compared with actual speed so that the governor determines when or how to open or close a water discharge controller in response to a balance between the two speeds.

Abstract: An object of the present invention is to provide a pump turbine capable of improving the stability of the governor by fully lessening the influences by the S-characteristics even when the running point of the pump turbine is in the S-characteristics region.