Abstract: A terminal device has a processor and is used in a wireless communication system. The processor determines a value pertaining to a stop time of a transmission process. When the terminal device receives a first signal indicating a UL grant and then receives a second signal indicating an instruction to stop the uplink transmission, the processor counts an elapsed time since the reception of the second signal. The processor performs the uplink transmission based on the first signal when the terminal device receives a third signal indicating a restart of the uplink transmission before the elapsed time reaches the determined value. The processor performs the uplink transmission based on a grant indicated by a fourth signal when the terminal device receives the fourth signal after the elapsed time reaches the determined value, the fourth signal indicating a grant of the uplink transmission.

Abstract: Travelling corresponding to characteristics of autonomous driving can be performed. An autonomous driving control device 3 mounted on a vehicle and controlling autonomous driving, includes a storage unit 32 that stores map data 32a, a route extraction unit 311 that extracts a plurality of routes from an origin O to a destination D based on the map data 32a, a determination unit 312 that determines whether or not to change to another route in response to a situation of an intersection when the vehicle approaches the intersection while the vehicle is traveling in one route of the routes extracted by the route extraction unit 311, and an autonomous driving control unit 313 that controls autonomous driving based on the determination of the determination unit 312.

Abstract: A wireless communications system includes a first relay apparatus connected to a first communications network; a second relay apparatus connected to a second communications network different from the first communications network; a second terminal configured to communicate with a first terminal via the second relay apparatus; and a wireless communications apparatus configured to perform handover of the second terminal, the wireless communications apparatus, when performing handover of the second terminal, disconnects communication via the second relay apparatus and performs the handover by a path change of the first relay apparatus when the communication via the second relay apparatus passes through the second communications network, the wireless communications apparatus performing the handover through a path change of the second relay apparatus without disconnecting the communication via the second relay apparatus when the communication via the second relay apparatus does not pass through the second communic

Abstract: A communication control device, includes a terminal information acquisition unit which acquires terminal-related information including communication service information relating to a communication service executed, and network information relating to a network, a selection unit which selects, among a plurality of combinations of networks each of which can be used by each of a plurality of communication services, a combination of networks having a smallest total communication cost to be charged for each of the plurality of communication services in each of the plurality combinations of networks, on the basis of the terminal-related information, and network-related information including communication cost information, and communication bandwidth information, and a network control unit which executes a network control such that the networks used respectively by each of the plurality of communication services are the selected combination of networks.

Abstract: A communication control device including a memory and a processor coupled to the memory and the processor configured to select a radio access technology among from a first radio access technology and second radio access technology based on utilization efficiency, a first load factor and a second load factor, the utilization efficiency depending on a packet length of a packet used in communication between a terminal device and a first wireless communication device by using a first radio access technology or between the terminal device and a second wireless communication device by using a second radio access technology, the first load factor indicating a load of radio resources corresponding to the first radio access technology, the second load factor indicating a load of radio resources corresponding to the second radio access technology, and cause the terminal device to execute communication by using the selected radio access technology.

Abstract: Travelling corresponding to characteristics of autonomous driving can be performed. An autonomous driving control device 3 mounted on a vehicle and controlling autonomous driving, includes a storage unit 32 that stores map data 32a, a route extraction unit 311 that extracts a plurality of routes from an origin O to a destination D based on the map data 32a, a determination unit 312 that determines whether or not to change to another route in response to a situation of an intersection when the vehicle approaches the intersection while the vehicle is traveling in one route of the routes extracted by the route extraction unit 311, and an autonomous driving control unit 313 that controls autonomous driving based on the determination of the determination unit 312.

Abstract: A communication control device, includes a terminal information acquisition unit which acquires terminal-related information including communication service information relating to a communication service executed, and network information relating to a network, a selection unit which selects, among a plurality of combinations of networks each of which can be used by each of a plurality of communication services, a combination of networks having a smallest total communication cost to be charged for each of the plurality of communication services in each of the plurality combinations of networks, on the basis of the terminal-related information, and network-related information including communication cost information, and communication bandwidth information, and a network control unit which executes a network control such that the networks used respectively by each of the plurality of communication services are the selected combination of networks.

Abstract: The communication device of a carrier aggregation system includes a propagation delay amount estimation unit and a network-side interface. The propagation delay amount estimation unit receives from the first base station a terminal list of user equipment that exists within a coverage area range of the second base station and to which a cell that is uplink-synchronized with the primary cell is allocated, and information of an uplink pilot signal in the primary cell. With respect to the terminal list, the propagation delay amount estimation unit sniffs the uplink pilot signal that is transmitted to the first base station. According to the uplink pilot signal in the primary cell and a reception timing that the communication device itself which configures the second base station retains, the propagation delay amount estimation unit estimates a propagation delay amount between the primary cell and the secondary cell and an uplink-timing correction amount.

Abstract: A base station including: an antenna configured to wirelessly communicate with a terminal that is able to communicate with the base station and another base station in parallel, the other base station being selected from a plurality of other base stations, and a processor configured to select the other base station based on a plurality of at least one parameter, each at least one parameter being associated with each period during which the terminal stays in each cell formed by each of the plurality of other base stations.

Abstract: A scheduling method by a scheduling device, the scheduling method including: receiving a first signal including a plurality of first reference signals from a terminal, the plurality of first reference signals being time multiplexed and having a same frequency, estimating a frequency deviation of the first signal based on the plurality of first reference signals of the first signal, transmitting a second signal to the terminal based on the frequency deviation, the second signal instructing the terminal to transmit a third signal in which the plurality of first reference signals and a second reference signal are time multiplexed in a specified period and have a same frequency.

Abstract: A frequency deviation is to be estimated in a wireless communication system in which a control data transmission channel and a user data transmission channel are allocated to different frequency bands. An estimation result using a reference signal for modulation in the user data control channel and an estimation result using a reference signal for estimating channel quality may be combined, according to an estimation result using a reference signal for modulation in the control data transmission channel, in order to modify the allocation period of the reference signal for estimating channel quality depending on the estimation result.

Abstract: A mobile station which is provided with a switching unit which switches whether a mobile station should acquire, from a base station, a timing correction amount of an uplink transmission timing determined based on a downlink reception timing, and an uplink transmission timing determining unit which, when not acquiring the timing correction amount from the base station, sets the timing correction amount to zero or determines it in accordance with a value of a variable which is included in broadcast information transmitted by the base station.

Abstract: A frequency deviation is to be estimated in a wireless communication system in which a control data transmission channel and a user data transmission channel are allocated to different frequency bands. An estimation result using a reference signal for modulation in the user data control channel and an estimation result using a reference signal for estimating channel quality may be combined, according to an estimation result using a reference signal for modulation in the control data transmission channel, in order to modify the allocation period of the reference signal for estimating channel quality depending on the estimation result.

Abstract: A cognitive radio system includes cognitive radio apparatuses and a management server via a network. The cognitive radio apparatus includes a terminal communication part selecting a communication protocol, a communication quality acquisition part acquiring a communication quality including a current location of the selected protocol, and a communication quality notification part notifying the server of the information. The server includes a server communication part communicating with the apparatus, a communication quality collecting part collecting the information, a communication quality managing part recording and managing the information, and an area communication condition providing part providing the information to the apparatus.