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: A target communication line defined as a congestion determination target and a client that transmits an ACK signal to a communication partner in a case where a signal is received from the communication partner are relayed to each other. It is determined whether a congestion occurs on a target communication line. A communication of the ACK signal is limited by a capture process that captures the signal communicated by the client in a case where determining that the congestion occurs on the target communication line.

Abstract: A terminal according to an aspect of the present disclosure includes: a memory storing a program; and one or more processors configured to execute the program to: receive, from a base station, a radio resource control message including information for configuring a periodicity of a physical uplink shared channel resource for a configured grant transmission; and transmit on a physical uplink shared channel resource, to the base station, information indicating that the terminal is not to use the physical uplink shared channel resource in the period of the configured grant transmission.

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 radio wave map provision device includes a radio wave map storage that stores a radio wave map. The radio wave map includes reference position information indicating a reference position, a communication speed with each external communication device at the reference position, and a connection probability indicating a probability of performing wireless communication with each external communication device at the reference position. The radio wave map provision device: receives the radio wave map request including request position information indicating a request position; obtains a lowest guaranteed speed and an estimated speed, at the reference position, based on the communication speed and the connection probability; and transmits a radio wave map reply including the connection probability, the lowest guaranteed speed, and the estimated speed, at the reference position corresponding to the request position information.

Abstract: A base station device communicates with a communication terminal device via a relay station device, which is located in a shielded space and performs a downstream communication with the communication terminal device located in the shielded space concurrently with an upstream communication with the base station device. The base station device includes: resource allocation unit allocating resources to be used in a communication between the relay station device and the base station device; a reuse requirement storage storing a reuse requirement, which is set based on a radio wave shielding ability of the shielded space; a reuse resource specifying unit specifying one or more reuse resources that satisfy the reuse requirement from the resources allocated by the resource allocation unit; and a transmission instruction unit instructing transmission of the reuse resources to the relay station device.

Abstract: A radio wave map generator device includes a receiving unit, a communication speed calculation unit, a connection probability calculation unit, and a storage unit. The receiving unit is configured to receive pieces of probe information each of which contains location information, propagation environment information, and external communication device identification information. The communication speed calculation unit is configured to calculate a first communication speed, and a second communication speed. The connection probability calculation unit is configured to calculate a first connection probability, and a second connection probability. The storage unit is configured to store the location information, external communication device identification information, the first communication speed, the second communication speed, the first connection probability, and the second connection probability.

Abstract: A data transmission device includes a wireless communication unit that wirelessly communicates with an external communication device, a travel route information acquirer that acquires a future travel route of a moving object, a travel route, a propagation environment information acquirer that acquires propagation environment information of a radio wave propagation path used in wireless communication, a speed information acquisition unit that acquires the moving speed of a moving object, and a converter that converts a relationship between the travel route and propagation environment information into a plurality of data slots each defined by the communication speed per unit time; a transmission instructor that instructs the wireless communication unit to transmit the data allocated to the data slot.

Abstract: A relay device includes: a storage unit storing a correspondence table that correlates header information with a relay resource, the relay resource implementing a communication request class defined based on the header information; a data acquisition unit acquiring the data transmitted from the transmission source device as acquired data; a relay resource determination unit determining a relay resource for the acquired data based on header information included in the acquired data and the correspondence table; and a data transmission unit transmitting the acquired data to the destination device using the relay resource determined by the relay resource determination unit.

Abstract: A target communication line defined as a congestion determination target and a client that transmits an ACK signal to a communication partner in a case where a signal is received from the communication partner are relayed to each other. It is determined whether a congestion occurs on a target communication line. A communication of the ACK signal is limited by a capture process that captures the signal communicated by the client in a case where determining that the congestion occurs on the target communication line.

Abstract: A communication device, which is capable of communicating through a first communication line and a second communication line different from one another, includes one or more processors configured to: communicate through the first communication line in a keeping state of data to be communicated; in a case where the second communication line is unavailable, limit a communication of the data through the first communication line corresponding to a movement of the communication device; and in response to the second communication line becoming available, communicate the data through the second communication line.

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.