Abstract: A wireless communication apparatus for transmitting data to a plurality of terminals in conformity with a predetermined wireless communication standard, comprises a controller configured to execute: successively broadcast-transmitting a plurality of data blocks; broadcast-transmitting first notification data as a notification for causing a first terminal receiving at least a part of the plurality of data blocks to declare that there is an unsuccessfully received data block after completion of the transmission of the plurality of data blocks; and retransmitting, if second notification data indicating the unsuccessfully received data block is received as a response to the first notification data from one or more of the first terminal, the data block indicated by the second notification data.

Abstract: Provided are a communication device and a communication method for reducing a processing load at the time of receiving or transmitting data. A communication device according to an embodiment includes: a receiver that receives a connection request for transmitting data for an application, and receives the data after receiving the connection request; and a processor that notifies the application of the reception of the connection request after the data is received.

Abstract: A disclosure is provided to suppress a load of transmission processing or reception processing in a case where data pieces of a plurality of applications are transmitted or received in a single packet. A transmission device of the discloser comprises: a first writer configured to read, from a transmission buffer configured to store first data related to a first application, the first data, and to write the first data that is read to a first memory region; and a packet generator configured to read, in a case where a transmission request of second data related to a second application is generated after the first data is written to the first memory region, the first data in the first memory region, and to generate a packet containing the first data and the second data.

Abstract: Provided are a communication device and a communication method for reducing a processing load at the time of receiving or transmitting data. A communication device according to an embodiment includes: a receiver that receives a connection request for transmitting data for an application, and receives the data after receiving the connection request; and a processor that notifies the application of the reception of the connection request after the data is received.

Abstract: In communication between a moving body and an external device, one of a plurality of communication modes is selected, and transmission target data are transmitted from the moving body to the external device based on the selected communication mode. The plurality of communication modes include: a line selection mode that selects one of communication lines available to the moving body and transmits the transmission target data by using the selected one communication line; and a redundant transmission mode that transmits same packets of the transmission target data in parallel by concurrently using multiple communication lines available to the moving body. In the mode selection process, whether reliable communication is necessary is determined based on an environment in which the moving body is placed. The redundant transmission mode is selected when the reliable communication is necessary, while the line selection mode is selected when the reliable communication is not necessary.

Abstract: Each of information processing apparatuses generates a local model by performing machine learning of a global model using local data. Each of the information processing apparatuses calculates an evaluation value according to an evaluation index. The information processing apparatuses exchange the calculated evaluation values by proximity communication. Each of the information processing apparatuses determines whether the evaluation value of the information processing apparatus has a high evaluation or not based on a result of comparison between the evaluation value and evaluation values of the other information processing apparatuses. At least one of the information processing apparatuses that has determined that the evaluation value has the high evaluation transmits local model information indicating the generated local model to a server apparatus.

Abstract: A wireless communication device includes: a storage device that stores information indicating a correspondence between an identifier and a priority that are used in data transmission; and one or more processors configured to acquire data for transmission, identify the priority of the data for transmission acquired by the one or more processors, based on the identifier of the data for transmission and the information stored in the storage device, determine, based on the priority identified by the one or more processors, a wireless communication service to be used to transmit the data for transmission, among a plurality of wireless communication services that have different communication costs and different real-time performances of transmission, respectively, and transmit the data for transmission by using the wireless communication service that is determined.

Abstract: According to one embodiment, a communication device includes: acquisition circuitry including a plurality of data acquirers configured to acquire data for transmission; processing circuitry configured to determine consecutive first sequence numbers for a plurality of pieces of the data acquired by the plurality of data acquirers, and to generate a plurality of packets that include the data acquired by the plurality of data acquirers and the first sequence numbers determined for the plurality of pieces of the data; and transmitting circuitry configured to transmit the plurality of packets wherein the packet includes an identifier that identifies the data acquirer having acquired the data in the packet or an identifier that identifies an application corresponding to the data in the packet.

Abstract: A communication device installed on a moving body includes: multiple types of communication interfaces configured to perform communications based on multiple types of communication methods, respectively; multiple types of queues associated with the multiple types of communication interfaces, respectively; and a communication controller provided between at least one application and the multiple types of queues. Each communication interface is configured to transmit a packet stored in an associated queue among the multiple types of queues to an external device. The communication controller is configured to: receive a transmission packet to be transmitted to the external device from the at least one application; identify a communication requirement for each transmission packet; select at least one selection queue for each transmission packet among the multiple types of queues according to the communication requirement; and store the transmission packet in the at least one selection queue.

Abstract: A wireless communication device includes: a storage device that stores information indicating a correspondence between an identifier and a priority that are used in data transmission; and one or more processors configured to acquire data for transmission, identify the priority of the data for transmission acquired by the one or more processors, based on the identifier of the data for transmission and the information stored in the storage device, determine, based on the priority identified by the one or more processors, a wireless communication service to be used to transmit the data for transmission, among a plurality of wireless communication services that have different communication costs and different real-time performances of transmission, respectively, and transmit the data for transmission by using the wireless communication service that is determined.

Abstract: A radio communication system in which a master node collects data acquired by a plurality of sensor nodes. The master node transmits, to the plurality of sensor nodes, a data transmission request including held data information that is information related to data already held by the master node. The sensor node transmits, to the master node, data not held by the master node on the basis of the held data information, and transfers the data transmission request to another sensor node.

Abstract: A wireless communication device has: wireless communication unit; calculation unit for calculating an evaluation value based on an opportunity for communication with the access providing device; transmission unit for transmitting the evaluation value to the other wireless communication device; acquisition unit for acquiring an evaluation value for the other wireless communication device; and communication control unit. When the other wireless communication device has more opportunities for communication than the wireless communication device does, the communication control unit preferably transmits uplink information, but when the other wireless communication device has less opportunity for communication than the wireless communication device does, the communication control unit preferably transmits downlink information.

Abstract: A method for relaying packets transmitted from a mobile terminal to an external network using a radio access network including a plurality of base stations, and a core network including a control node, a quality management node, and gateways connected to the external network, the method performs a first establishment step in which the control node establishes a transfer path for the packets transmitted from the mobile terminal by communicating with a first gateway; a decision step in which the quality management node decides to perform data offloading for a predetermined packet; a notification step in which the control node transmits a switching notification to the effect that the transfer path is switched to a second gateway to the base station to which the mobile terminal is connected; and a second establishment step in which the control node requests establishment of the transfer path to the second gateway.

Abstract: A wireless terminal includes: an intercept mode evaluation unit configured to evaluate a congestion state of wireless resources, based on a communication state of other terminals intercepted during executing an intercept mode, which is a mode of intercepting communication by the other terminal; and a transmission mode execution unit configured to execute a transmission mode, in which the wireless terminal performs transmission and reception, without executing the intercept mode when the intercept mode evaluation unit evaluates that an off-time has set in.

Abstract: An in-vehicle device includes: a first communicator for inter-vehicle communication; a second communicator for communication with a predetermined transmission destination; and a storage configured to store first information pieces and a list including respective identification information pieces of the first information pieces; and a controller.

Abstract: A wireless terminal includes: an intercept mode evaluation unit configured to evaluate a congestion state of wireless resources, based on a communication state of other terminals intercepted during executing an intercept mode, which is a mode of intercepting communication by the other terminal; and a transmission mode execution unit configured to execute a transmission mode, in which the wireless terminal performs transmission and reception, without executing the intercept mode when the intercept mode evaluation unit evaluates that an off-time has set in.

Abstract: A data transmission device that transmits data to another node, the data transmission device including: data storing unit for storing data; summary information storing unit for classifying data stored in the data storing unit into prescribed groups and for storing summary information that represents the number of pieces of data for each group; receiving unit for receiving summary information from the other node; selecting unit for selecting data to be transmitted based on the summary information received from the other node; and transmitting unit for transmitting the data selected by the selecting unit. The selecting unit favorably preferentially selects data included in a group with a smaller number of pieces of data based on the summary information received from the other node. Due to such a configuration, information with a high possibility of not being possessed by a communication partner can be selected and transmitted in a data sharing system.

Abstract: An information request describing an attribute of necessary data is distributed from a center server to a mobile terminal via an edge server; the mobile terminal transmits data, which is requested in the information request, to the edge server; the edge server notifies the center server to the effect that the data, which is requested in the information request, has been acquired; the center server distributes, with respect to data acquired by the edge server from the mobile terminal, non-necessity information indicating that collection of the data is unnecessary to the edge server and to the mobile terminal via the edge server; and when the mobile terminal receives the non-necessity information, the mobile terminal suspends acquisition of data, of which collection is deemed unnecessary in the non-necessity information, and, when the data is stored, discards the data.

Abstract: An apparatus which transfers information transmitted from a master node or addressed to the master node, comprises a generation unit that generates an assessment value representing logical proximity to the master node; a transmit unit that sends/receives the assessment value to/from other apparatuses; and a communication unit that, when this apparatus is an apparatus that is logically closest to the master node within a communication range, transmit information having the master node as a transmission source to other apparatuses or receive information addressed to the master node from the other apparatuses; otherwise, transmit information addressed to the master node to the logically closest apparatus or receive information having the master node as a transmission source from the logically closest apparatus.

Abstract: An in-vehicle device includes: a first communicator for inter-vehicle communication; a second communicator for communication with a predetermined transmission destination; and a storage configured to store first information pieces and a list including respective identification information pieces of the first information pieces; and a controller.