Abstract: A vehicle include a first wheel and a second wheel, a steering circuit configured to steer at least one of the first wheel and the second wheel, and a wireless communication circuit configured to wirelessly communicate with the first vehicle and the second vehicle. When the wireless communication circuit receives a scheduled route of the first vehicle from the first vehicle while the vehicle is traveling on a first scheduled route, and determines that a possibility of a collision with the first vehicle is equal to or greater than a certain value based on the first scheduled route and the scheduled route of the first vehicle. The vehicle creates a second scheduled route different from the first scheduled route, starts traveling on the second scheduled route, and transmits the scheduled route of the first vehicle and the second scheduled route to the second vehicle.

Abstract: A vehicle communicating with first and second wireless communication terminal and second wireless communication terminals includes a manual driving mode and an autonomous driving mode. In the manual driving mode, when a predetermined relationship with the first wireless communication terminal is established, manual driving by the occupant is possible, and when the predetermined relationship with the first wireless communication terminal is not established, the manual driving is impossible, and when the predetermined relationship with the first wireless communication terminal is established, transition to the manual driving mode is possible.

Abstract: Provided are an interference-control method and femto base station whereby inter-cell interference between a femtocell and a macrocell is decreased without a loss in throughput or coverage of the femto base station. A nearby-macro-terminal detection unit (306) in the femto base station (103) detects whether there are any macro terminals (102) within communication range of the femto base station (103) that are not registered with the femto base station (103). If a macro terminal (102) is detected, an interference-control unit (307) controls interference by either decreasing the total transmission power of the femto base station (103) or allocating, to femto terminals (104) registered with the femto base station (103), frequencies that differ from the frequency used by the macro base station (101).

Abstract: Provided is an interference control method that, in the case where a macro terminal does not exist close to the femtocell terminal, improves the coverage performance and bit rate of femtocell terminals, and also prevent deterioration in the performance of femtocell base stations, femtocell terminals, or macro terminals. In this method, the macro terminals (102, 103) will transmit, when the difference value between the RSRQs of the femtocell base stations (104) and the RSRQ of a macro base station (101) is greater than a prescribed threshold value, a request to start an interference control, the difference value, and identification information of the femtocell base station (104), to the macro base station (101). The macro base station (101) will transmit, on the basis of the request, the difference value, and identification information, an interference-control start-up request signaling to the femtocell base station (104) specified by the identification information.

Abstract: Disclosed are a wireless communication base station and a total transmission power regulating method that reduce interference to macrocell users near a femtocell and interference to neighboring femtocell users near the femtocell in a balanced manner, while ensuring throughput of the femtocell users. A reception power measuring unit (214) measures the reception power of a CPICH. A cell type discriminating unit (216) judges whether the received signal is a signal from a macro base station or a signal from a femto base station. When a signal from a macro base station is received, a total downlink transmission power setting unit (217) executes a first-stage interference regulation based on the strongest CPICH reception power value and calculates a tentative value for the total downlink transmission power of a femto base station (110).

Abstract: A radio communication apparatus and an associated method are provided. The apparatus includes a receiving unit configured to receive first data and second data, which are transmitted from a plurality of antennas for spatial-multiplexing using a plurality of blocks, into which a plurality of consecutive subcarriers in a frequency domain are divided. The apparatus further includes a calculating unit configured to calculate a first absolute CQI value per each of the blocks for the first data and a second absolute CQI value per each of the blocks for the second data, and calculate a relative value of the second absolute CQI value with respect to the first absolute CQI value, per each of the blocks. The apparatus still further includes a transmitting unit configured to transmit the first absolute CQI value and the relative value of the second absolute CQI value in the same block.

Abstract: Provided are an interference-control method and femto base station whereby inter-cell interference between a femtocell and a macrocell is decreased without a loss in throughput or coverage of the femto base station. A nearby-macro-terminal detection unit (306) in the femto base station (103) detects whether there are any macro terminals (102) within communication range of the femto base station (103) that are not registered with the femto base station (103). If a macro terminal (102) is detected, an interference-control unit (307) controls interference by either decreasing the total transmission power of the femto base station (103) or allocating, to femto terminals (104) registered with the femto base station (103), frequencies that differ from the frequency used by the macro base station (101) .

Abstract: Provided is an interference control method that, in the case where a macro terminal does not exist close to the femtocell terminal, improves the coverage performance and bit rate of femtocell terminals, and also prevent deterioration in the performance of femtocell base stations, femtocell terminals, or macro terminals. In this method, the macro terminals (102, 103) will transmit, when the difference value between the RSRQs of the femtocell base stations (104) and the RSRQ of a macro base station (101) is greater than a prescribed threshold value, a request to start an interference control, the difference value, and identification information of the femtocell base station (104), to the macro base station (101). The macro base station (101) will transmit, on the basis of the request, the difference value, and identification information, an interference-control start-up request signaling to the femtocell base station (104) specified by the identification information.

Abstract: A radio communication apparatus and an associated method are provided. The apparatus includes a receiving unit configured to receive first data and second data, which are transmitted from a plurality of antennas for spatial-multiplexing using a plurality of blocks, into which a plurality of consecutive subcarriers in a frequency domain are divided. The apparatus further includes a calculating unit configured to calculate a first absolute CQI value per each of the blocks for the first data and a second absolute CQI value per each of the blocks for the second data, and calculate a relative value of the second absolute CQI value with respect to the first absolute CQI value, per each of the blocks. The apparatus still further includes a transmitting unit configured to transmit the first absolute CQI value and the relative value of the second absolute CQI value in the same block.

Abstract: A mobile terminal device for performing multi-carrier communication with a base station device can improve communication quality while reducing the data amount without lowering accuracy of feedback information.

Abstract: A mobile terminal device for performing multi-carrier communication with a base station device can improve communication quality while reducing the data amount without lowering accuracy of feedback information.

Abstract: A radio communication apparatus and an associated method are provided. The apparatus includes a receiving unit configured to receive first data and second data, which are transmitted from a plurality of antennas for spatial-multiplexing using a plurality of blocks, into which a plurality of consecutive subcarriers in a frequency domain are divided. The apparatus further includes a calculating unit configured to calculate a first absolute CQI value per each of the blocks for the first data and a second absolute CQI value per each of the blocks for the second data, and calculate a relative value of the second absolute CQI value with respect to the first absolute CQI value, per each of the blocks. The apparatus still further includes a transmitting unit configured to transmit the first absolute CQI value and the relative value of the second absolute CQI value in the same block.

Abstract: A mobile terminal device for performing multi-carrier communication with a base station device can improve communication quality while reducing the data amount without lowering accuracy of feedback information.

Abstract: Disclosed are a wireless communication base station and a total transmission power regulating method that reduce interference to macrocell users near a femtocell and interference to neighboring femtocell users near the femtocell in a balanced manner, while ensuring throughput of the femtocell users. A reception power measuring unit (214) measures the reception power of a CPICH. A cell type discriminating unit (216) judges whether the received signal is a signal from a macro base station or a signal from a femto base station. When a signal from a macro base station is received, a total downlink transmission power setting unit (217) executes a first-stage interference regulation based on the strongest CPICH reception power value and calculates a tentative value for the total downlink transmission power of a femto base station (110).

Abstract: A communication terminal apparatus that can eliminate the waste of reception quality report, suppress the interference of an upstream network, perform an optimum assignment using a scheduling, prevent the loss of resources, and ensure the fairness of transmission assignment using the scheduling. In this apparatus, a reception quality determining part (110) uses a pilot signal, which is included in a received signal, to determine the reception quality for each of subcarrier blocks. A CQI generating part (111) generates CQIs each of which is the information indicative of a result of the determination by the reception quality determining part (110). A sorting part (112) sorts the CQIs in descending or ascending order of the reception quality.

Abstract: A radio communication apparatus and an associated method are provided. The apparatus includes a receiving unit configured to receive first data and second data, which are transmitted from a plurality of antennas for spatial-multiplexing using a plurality of blocks, into which a plurality of consecutive subcarriers in a frequency domain are divided. The apparatus further includes a calculating unit configured to calculate a first absolute CQI value per each of the blocks for the first data and a second absolute CQI value per each of the blocks for the second data, and calculate a relative value of the second absolute CQI value with respect to the first absolute CQI value, per each of the blocks. The apparatus still further includes a transmitting unit configured to transmit the first absolute CQI value and the relative value of the second absolute CQI value in the same block.

Abstract: A radio communication apparatus and an associated method are provided. The apparatus includes a receiving unit configured to receive first data and second data, which are transmitted from a plurality of antennas for spatial-multiplexing using a plurality of blocks, into which a plurality of consecutive subcarriers in a frequency domain are divided. The apparatus further includes a calculating unit configured to calculate a first absolute CQI value per each of the blocks for the first data and a second absolute CQI value per each of the blocks for the second data, and calculate a relative value of the second absolute CQI value with respect to the first absolute CQI value, per each of the blocks. The apparatus still further includes a transmitting unit configured to transmit the first absolute CQI value and the relative value of the second absolute CQI value in the same block.

Abstract: A mobile device, a base station device, and a transmission rate control method for preventing the reception power at all the base station devices of an active set from exceeding an RoT threshold and preventing an excessive load. A transmission rate command acquiring section (304) of the mobile station device (300) acquires transmission rate commands transmitted from the base station devices (100a to 100c) from a received signal. A transmission rate determining section (305) determines the transmission rate of the uplink channel according to the transmission rate command. A DOWN monitoring section (306) monitors the transmission rate command from the base station devices (100b, 100c) of a non-primary cell and monitors the amount of “DOWN”. The DOWN monitoring section (306) judges that the load is heavy in a base station device where the amount of “DOWN” is large.

Abstract: A mobile terminal device for performing multi-carrier communication with a base station device can improve communication quality while reducing the data amount without lowering accuracy of feedback information.

Abstract: A transmission apparatus capable of preventing both degrading of the error rate characteristic and deterioration of throughput caused by repeated retransmissions. In the apparatus, arrangement determination section 103 determines in an initial transmission to perform general constellation mapping, and determines in a retransmission to vary a constellation mapping position or vary a bit arrangement of each symbol according to the number of retransmissions. Data interchanging section 105 interchanges transmission data for each bit on a symbol basis to be in a bit arrangement determined by arrangement determining section 103. Mapper section 106 configures (maps) the transmission data input from data interchanging section 105 in each symbol to be mapped in the constellation mapping position determined in arrangement determining section 103.