Abstract: A communication device controls a first communication flow performed by a first terminal and a second communication flow performed by a second terminal. Both of the first communication flow and the second communication flow pass through a sharing section, and the second communication flow has a higher priority than a priority of the first communication flow. The communication device acquires a communication delay in the sharing section; acquires a rated delay of the second communication flow, the rated delay is a communication delay allowed to the second communication flow; and limits input of data from the first communication flow and the second communication flow to the sharing section based on a comparison result between the communication delay of the sharing section and the rated delay.

Abstract: A redundant communication apparatus includes a determining unit and a transmitting unit. The determining unit determines an upper limit of a redundancy level when transmission waiting data in a transmission apparatus is made redundant and transmitted, based on a data quantity of the transmission waiting data and a communication speed of a communication line between a reception apparatus that is a transmission destination of the transmission waiting data and the transmission apparatus. The transmitting unit causes the transmission waiting data to be made redundant at a redundancy level that is equal to or less than the upper limit determined by the determining unit and transmits the data to the reception apparatus via the communication line.

Abstract: In a bandwidth estimation device, a measurement unit measures a measurement time from reception by a receiver of a first packet of a packet train including a plurality of packets that are sequentially transmitted from a transmitter via a communication line to reception by the receiver of a last packet of the packet train, An estimation validity determination unit compares the measurement time with a threshold time predefined based on performance of the receiver or characteristics of the communication line to determine whether a valid estimate of an available bandwidth of the communication line can be made. In response to the estimation validity determination unit determining that a valid estimate of the available bandwidth can be made, an estimation unit estimates the available bandwidth of the communication line based on an amount of data in the packet train and the measurement time.

Abstract: A communication device includes a first clock, a communication unit, a delay time acquiring unit, a selection unit, and a correction unit. The communication unit is configured to receive first packets from an outside communication device including a second clock and transmit second packets to the outside communication device. The delay time acquiring unit is configured to a first delay time and a second delay time. The selection unit is configured to select one of the first packet and the second packet as a target packet. The correction unit is configured to calculate a correction value based on a first minimum delay time or a second minimum delay time, and correct the delay time of the target packet using the correction value.

Abstract: A base station device includes: a beamforming setting information obtaining unit obtaining a plurality of beamforming setting information; a positioning reference signal generation unit generating a plurality of positioning reference signals using each of the plurality of beamforming setting information; a schedule information obtaining unit obtaining schedule information indicating a transmission schedule of the plurality of the positioning reference signals; and a transmission unit transmitting each of the plurality of positioning reference signals based on the schedule information.

Abstract: An information intermediating apparatus in an information transaction system including an information providing apparatus, an information acquiring apparatus and the information intermediating apparatus connected to a communication network, includes: a first receiver that receives second information, of first and second information necessary for restoring transaction object information, and first feature information indicating a feature of the first information; a second receiver that receives second feature information from the information acquiring apparatus, the second feature information being calculated from the first information transmitted to the information acquiring apparatus from the information providing apparatus; a feature information determination unit that determines whether an identity is present between the first feature information and the second feature information; and a transmitter that transmits the second information to the information acquiring apparatus, when the feature information d

Abstract: A communication terminal device includes a first communication unit that is configured to communicate with another communication terminal device by a first communication method; and a second communication unit that is configured to communicate with the other communication terminal device by a second communication method that is different from the first communication method. The first communication unit is configured to exchange connection information necessary for the second communication unit to start communication with the other communication terminal device before the second communication unit starts the communication.

Abstract: A data processor for transferring or maintaining a data sample, includes: a table management unit that manages a data value table that relates a data type of the data sample, usage attribute information defined by a pair of at least one attribute type and a value concerning a utilization form, and information for defining a value index; and a prioritizing unit that defines the value index for the data sample based on the data value table, the value index belonging to a specific data type and associated with the usage attribute information, and sets a priority of the transferring or the maintaining of the data sample using the value index.

Abstract: A terminal apparatus mounted on a movable body is provided to communicate with an external communication apparatus outside the movable body. The terminal apparatus includes an antenna, and a communicator device. The antenna includes a plurality of antenna elements to be arranged along a traveling direction of the movable body. The communicator device is configured to communicate with the external communication apparatus using a communicating antenna element that is at least one of the plurality of antenna elements. The communicating antenna element is selected from the plurality of antenna elements so as to belong to a specified region. The specified region is defined by propagation environment information of an electric wave propagation path of a signal transmitted to and received from the external communication apparatus.

Abstract: A mobile system communication apparatus is configured to perform a selection of either (i) transmitting a transmission data with a present communication characteristic or (ii) transmitting the transmission data with an advantageous communication characteristic that is more advantageous than the present communication characteristic, from a result of comparison between a target communication quality and a predicted communication quality that is predicted when communicating with the advantageous communication characteristic based on (i) a predicted position of a mobile communication apparatus and a correspondence relationship between a position and a communication characteristic used by the mobile communication apparatus.

Abstract: A moving body communication system includes: a plurality of user apparatuses each used on a moving body; and a server that is configured to distribute, to at least one of the user apparatuses as a requester, commonly used data as data used commonly by the plurality of the user apparatuses, based on a request from the at least one of the user apparatuses. The user apparatus as the requester is configured to execute processing for acquisition of the commonly used data from an already-acquiring apparatus positioned around the requester via a narrow-area communication in response to that acquirability of the commonly used data via the narrow-area communication is notified as a response from the server to a distribution request.

Abstract: A vehicle communication system includes: a vehicle communication apparatus for a vehicle; a management apparatus that manages a wireless resource; and a request transmitter that transmits a resource allocation request to the management apparatus for requesting allocation of a location resource and the wireless resource by time. The vehicle communication apparatus includes: a vehicle transmitter, a vehicle receiver, and a vehicle communication controller that corresponds to a vehicle processer, and controls the vehicle transmitter and the vehicle receiver. The management apparatus includes: a management apparatus receiver that receives the resource allocation request, an allocator that corresponds to a management processer, and allocates the location resource and the wireless resource by time, and a management apparatus transmitter that transmits an allocation result of the allocator.

Abstract: A vehicle communication device for use in a vehicle includes a data acquisition unit for acquiring captured images as travel data; a data generator for generating transmission data from the travel data for transmission to a data center; and a data transmitter transmitting the transmission data generated by the data generator to the data center. When there is a plurality of different travel data types, the data generator can increase the priority of any of the travel data types based on a data center necessity level, and prioritize the transmission of the transmission data generated from prioritized travel data.

Abstract: A data delivery system includes: a server for obtaining a first query requesting data from a user device. The first query includes data requirements for data requested by the user device. The data delivery system also includes a data providing terminal for providing terminal data to the server, as either the user-requested data or as data from which the user-requested data is derivable. The data delivery system enables the user device to obtain the user-requested data. The server includes: a first query obtainer for obtaining the first query from the user device; a second query determiner for determining a second query by using attributes that enable the data providing terminal to identify the terminal provided data; and a server transmitter for transmitting the second query to the data providing terminal.

Abstract: A travel plan generation device generates a travel plan including a recommended route for a travel of a driving support vehicle. The drive support vehicle is a vehicle that (i) performs a driving support for the vehicle by performing a positioning to identify a position of the vehicle using an autonomous sensor attached to the vehicle and (ii) performs the driving support based on information obtained by a communication resource. The travel plan generation device stores a communication resource map indicating a correspondence relationship between a point and a communication resource amount that is an amount of the communication resource estimated to be available for communication at the point. The travel plan generation device stores a positioning accuracy map indicating a correspondence relationship between a point and a positioning accuracy estimated when the autonomous sensor performs the positioning of the vehicle at the point.

Abstract: A communication controller is provided for controlling a wireless communication device disposed in a vehicle to transport data to a target device. The communication controller includes a searcher, a cost computer, a path determiner, and a communication control section. The searcher detects the current position of the vehicle, determines a travel plan of the vehicle, and searches for one or more transport paths for transporting data to the target device. The cost computer calculates a transport cost for each of the transport paths. The path determiner determines the lowest transport cost, selects the transport path, and determines the transmission conditions. The communication control section transmits the data to the target device when the transmission conditions are satisfied.

Abstract: A data collection system includes: a communication terminal in each vehicle having a storage processor storing specific sensing information in a storage device and a vehicle-side communication unit; and a data center including a data center-side communication unit and a data center-side storage. The vehicle-side communication unit sequentially transmits vehicle information including a vehicle position to the data center. The data center-side communication unit transmits a transmission request of object information as the specific sensing information to an object vehicle, which is one of the vehicles approximately at a traveling position specified based on the vehicle position. The vehicle-side communication unit transmits the object information to the data center.

Abstract: A vehicle communication system includes: a vehicle communication apparatus for a vehicle; a management apparatus that manages a wireless resource; and a request transmitter that transmits a resource allocation request to the management apparatus for requesting allocation of a location resource and the wireless resource by time. The vehicle communication apparatus includes: a vehicle transmitter, a vehicle receiver, and a vehicle communication controller that corresponds to a vehicle processer, and controls the vehicle transmitter and the vehicle receiver. The management apparatus includes: a management apparatus receiver that receives the resource allocation request, an allocator that corresponds to a management processer, and allocates the location resource and the wireless resource by time, and a management apparatus transmitter that transmits an allocation result of the allocator.

Abstract: A moving body communication system includes: a plurality of user apparatuses each used on a moving body; and a server that is configured to distribute, to at least one of the user apparatuses as a requester, commonly used data as data used commonly by the plurality of the user apparatuses, based on a request from the at least one of the user apparatuses. The user apparatus as the requester is configured to execute processing for acquisition of the commonly used data from an already-acquiring apparatus positioned around the requester via a narrow-area communication in response to that acquirability of the commonly used data via the narrow-area communication is notified as a response from the server to a distribution request.

Abstract: A ledger management system includes multiple ledger management devices communicably connected to each other. The ledger management devices have a same distributed ledger. Each ledger management device includes the distributed ledger, an agreement determination unit, and a ledger storage unit. The distributed ledger stores ledger information, including specific information specific to a previous ledger information and present vehicle information obtained from a vehicle, that is generated by one of the ledger management devices. The agreement determination unit determines whether the ledger information generated by the one of the ledger management devices satisfies an agreement rule. The ledger storage unit stores the ledger information in the distributed ledger when the ledger information satisfies the agreement rule, and does not store the ledger information in the distributed ledger when the ledger information does not satisfy the agreement rule.