Patent application number | Description | Published |
20100183099 | Reception Control Method and Wireless Communication Apparatus - When receiving a signal from the antenna # | 07-22-2010 |
20100266078 | RADIO COMMUNICATION DEVICE, AND RECEPTION QUALITY ESTIMATION METHOD - A radio base station | 10-21-2010 |
20100285766 | RECEPTION DEVICE, RADIO COMMUNICATION TERMINAL, RADIO BASE STATION, AND RECEPTION METHOD - A reception device | 11-11-2010 |
20100285811 | Communication Method and Radio Communication Terminal - Even when being located at cell edge in a multiband mobile communication system, a radio communication terminal, is allowed to stably execute cell search so as to easily establish a connection with a radio base station. The radio communication terminal according to the present invention includes: a first determination unit | 11-11-2010 |
20100329375 | WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION APPARATUS AND WIRELESS COMMUNICATION METHOD - A channel estimation unit | 12-30-2010 |
20110002237 | WIRELESS COMMUNICATION SYSTEM, TRANSMISSION APPARATUS AND COMMUNICATION CONTROL METHOD - Provided is a transmission device comprising a transmission weight generating unit for generating a plurality of transmission weights, a communication quality acquiring unit for acquiring a value indicating the communication quality of each of unique paths, and a transmission weight determining unit for selecting such one of the transmission weights generated by the transmission weight generating unit that the difference of the values indicating the communication qualities acquired by the communication quality acquiring unit between the individual unique paths is at or lower than a predetermined value and that the sum of all the communication qualities of the unique paths becomes the maximum. | 01-06-2011 |
20110007833 | WIRELESS COMMUNICATION SYSTEM, TRANSMISSION APPARATUS AND COMMUNICATION CONTROL METHOD - Provided are a transmission weight generation unit for generating a plurality of transmission weights, a communication quality obtain unit for obtaining information on communication quality of each eigenpath, and a transmission weight determination unit, when a transmission apparatus performs transmission via a plurality of paths, for determining a transmission weight which maximizes communication quality of a path with the lowest communication quality among the plurality of paths. | 01-13-2011 |
20110051617 | WIRELESS COMMUNICATION SYSTEM, TRANSMISSION APPARATUS AND COMMUNICATION CONTROL METHOD - A transmission weight generation unit generates a plurality of transmission weights, while a communication quality obtain unit obtains a value indicating communication quality of each eigenpath. A transmission control unit, if reducing a size of a packet, controls to transmit the packet by dividing it into a plurality of eigenpaths and selects a transmission weight such that respective communication qualities of the eigenpaths become equivalent. The transmission control unit, if not reducing the size of the packet, controls to generate a plurality of packets and to transmit the packets by the eigenpaths and selects a transmission weight which maximizes overall communication quality of the plurality of eigenpath. A transmission weight policy determination unit obtains a type of the packet at transmission of the packet and determines whether to reduce the size of the packet. | 03-03-2011 |
20110176630 | WIRELESS COMMUNICATION APPARATUS AND WIRELESS COMMUNICATION METHOD - Provided is a wireless communication apparatus which prevents deterioration of communication characteristics because of a transmission weight of a greatest common factor and enhances the communication characteristics of feedback MIMO. A wireless communication apparatus having a plurality of antennas includes a reception unit for obtaining channel state information of channels of signals received from another wireless communication apparatus, a channel state information calculation unit for calculating an average value of the channel state information, selecting channels having the channel state information equal to or higher than a threshold based on the average value and calculating representative channel state information of the predetermined frequency band overall from the channel state information of the selected channels, a transmission weight selection unit for selecting a transmission weight based on the representative channel state information, and a transmission unit for transmitting identification information of the transmission weight to the another wireless communication apparatus. | 07-21-2011 |
20110177788 | WIRELESS COMMUNICATION APPARATUS AND WIRELESS COMMUNICATION METHOD - Provided is a wireless communication apparatus, which enhances communication characteristics of feedback MIMO by switching transmission weight selection processing based on a channel state to select a suitable transmission weight with a small calculation load. A wireless communication apparatus has a plurality of antennas, and includes a reception unit for receiving signals of channels included in a predetermined frequency band from another wireless communication apparatus and for obtaining channel state information of the channels, a determination unit for determining a variation in the channel state information, a channel state information calculation unit for calculating an average value of all of the channel state information included in the predetermined frequency band as representative channel state information of the predetermined frequency band overall if there is no variation in the channel state information, a transmission weight selection unit for selecting a transmission weight based on the representative channel state information calculated, and a transmission unit for transmitting identification information of the transmission weight to the another wireless communication apparatus. | 07-21-2011 |
20110261893 | WIRELESS COMMUNICATION APPARATUS AND WIRELESS COMMUNICATION METHOD - Provided is a wireless communication apparatus which prevents deterioration of a communication characteristics because of a transmission weight of a highest common factor and enhances the communication characteristics of feedback MIMO. A wireless communication apparatus having a plurality of antennas includes a reception unit for receiving signals of channels in a predetermined frequency band from another wireless communication apparatus and obtaining channel state information of the channels, a channel state information calculation unit for calculating a weighted average of the channel state information as representative channel state information of the predetermined frequency band overall based on power of the channel state information, a transmission weight selection unit for selecting a transmission weight based on the representative channel state information, and a transmission unit for transmitting identification information of the transmission weight to the another wireless communication apparatus. | 10-27-2011 |
20130201968 | RADIO COMMUNICATION SYSTEM, HIGH-POWER BASE STATION, LOW-POWER BASE STATION, AND COMMUNICATION CONTROL METHOD - A radio communication system | 08-08-2013 |
20130210445 | RADIO COMMUNICATION SYSTEM, HIGH-POWER BASE STATION, LOW-POWER BASE STATION, AND COMMUNICATION CONTROL METHOD - A radio communication system | 08-15-2013 |
20150043546 | RADIO COMMUNICATION SYSTEM, HIGH-POWER BASE STATION, LOW-POWER BASE STATION, AND COMMUNICATION CONTROL METHOD - A radio communication system | 02-12-2015 |