Patent application number | Description | Published |
20090196363 | RADIO COMMUNICATIONS APPARATUS AND COMMUNICATION METHOD - A radio communications apparatus transmitting data using multiple antennas is disclosed that includes a data link layer control information generation part configured to generate multiple data link layer control information items from generated data link layer control information; a data unit generation part configured to generate multiple data units to be transmitted through the corresponding antennas, based on the data link layer control information items generated by the data link layer control information generation part, so that the data units include the data link layer control information items; and a physical layer processing part configured to perform adaptive modulation and coding on the data units. | 08-06-2009 |
20090232122 | Radio Base Station, Radio Terminal and Radio Communication Method - Date that is to be transmitted from transmitting antennas in each of a plurality of resource blocks, obtained by dividing a radio resource, used for communication with a radio terminal is multiplied by weigh information. A group of plural pieces of the weight information associated with resource blocks to be transmitted per unit time is controlled. | 09-17-2009 |
20100118840 | PILOT ARRANGEMENT METHOD IN MOBILE RADIO COMMUNICATION SYSTEM AND TRANSMITTER/RECEIVER ADOPTING SAME - A pilot arrangement method in a mobile radio communication system by which, in order to avoid a problem that poor CQI accuracy affects the scheduling of channel arrangement to cause the throughput to be deteriorated, a working frequency band is divided into a plurality of predetermined bands and time division multiplexing is performed. A known pilot symbol is inserted into the predetermined frequency bands at predetermined reference intervals. Furthermore, the known pilot symbol is inserted into at least one of the predetermined frequency bands at smaller intervals than the predetermined reference intervals and arranged. | 05-13-2010 |
20100220685 | PILOT ARRANGEMENT METHOD IN MOBILE RADIO COMMUNICATION SYSTEM AND TRANSMITTER/RECEIVER ADOPTING SAME - A pilot arrangement method in a mobile communication system in which a working frequency band is divided into a plurality of predetermined bands, and time division multiplexing is performed, the method comprising, inserting a known pilot symbol into the plurality of predetermined frequency bands at a predetermined reference interval; and inserting to arrange the known pilot symbol into at least one of the plurality of predetermined frequency bands at a smaller interval than the predetermined reference interval, wherein a pattern inserting the known pilot symbol into a at least the one of the plurality of predetermined frequency bands at the smaller interval is changed according to a predetermined pattern. | 09-02-2010 |
20110078530 | TRANSMITTING APPARATUS, RECEIVING APPARATUS AND INFORMATION COMMUNICATION METHOD - A wireless communication system in which retransmission is performed between a transmitting apparatus and a receiving apparatus, whereby the transmitting apparatus includes, a first transmitting unit to transmit first data to the receiving apparatus and retransmission controlling unit to perform transmission of second data, the data part of which is same as that of the first data, without waiting for a feedback signal from receiving apparatus regarding the first data, and to wait for a feedback signal from the receiving apparatus regarding the second data, and the receiving apparatus includes, a second transmitting unit to transmit the feedback signal regarding the second data to the transmitting apparatus. | 03-31-2011 |
20110281605 | WIRELESS COMMUNICATION DEVICE AND WIRELESS COMMUNICATION METHOD - The present invention relates to a wireless communication device performing communications by using a radio frame containing a control channel and a data channel, the wireless communication device comprises of a structuring unit that allocates a first part of the control channel adjacent to the data channel in the radio frame, and allocates a second part of the control channel, which denotes different control information from the first part, to the data channel so as to be inserted between data of the data channel and a transmission unit that transmits the radio frame including the data channel and the control channel. | 11-17-2011 |
20120033609 | RELAY APPARATUS, TRANSMITTING APPARATUS, COMMUNICATION SYSTEM, RECEIVING APPARATUS, AND COMMUNICATION METHOD - In a communication system that further includes a receiving apparatus and a transmitting apparatus that after a given period that starts after transmission of a wireless signal to the receiving apparatus, receives delivery confirmation information concerning the wireless signal, a relay apparatus includes a receiver that receives and decodes the wireless signal transmitted by the transmitting apparatus; a determiner that determines whether the decoded wireless signal is subject to relay; a notifier that, if the determiner determines that the wireless signal is subject to relay, notifies the transmitting apparatus of relay information indicating that the wireless signal is to be regenerated and relayed; and a transmitter that transmits to the receiving apparatus, the wireless signal that has been determined to be subject to relay. | 02-09-2012 |
20130012217 | MOBILE WIRELESS COMMUNICATION SYSTEM INCLUDING RADIO RELAY TRANSMISSION FUNCTION - A radio base station apparatus includes a determining unit that dynamically determines, based on both quality information and traffic information, collected for each of a first link used for direct communication between a first radio terminal and the base station apparatus, a second link used for direct communication between a second radio terminal and a fixed radio relay apparatus, and a third link used for relay transmission between the base station apparatus and the relay apparatus, of sub-frames in a radio frame as radio resources, a number of sub-frames to be allocated to the each of the first, second and third links and an allocation timing therefor; and a notifying unit that notifies the relay apparatus of allocation information including the number of sub-frames to be allocated to the third link used for the relay transmission and the timing therefor in a period of at least once in the frame. | 01-10-2013 |
20130182646 | WIRELESS COMMUNICATION DEVICE AND WIRELESS COMMUNICATION METHOD - A wireless communication system including a transmitting and receiving device that performs communications with the transmitting device, using a radio frame containing control information and data, wherein the transmitting device includes: a first generating unit that generates first control information able to be estimated by the receiving device; a second generating unit that generates second control information used for control of communication from the receiving device to the transmitting device and unable to be estimated by the receiving device; a multiplexing unit that multiplexes the control and data information so that the first control information is allocated in the control information and the second control information is allocated in the data in the radio frame; a transmitting unit a signal multiplexed by the multiplexing unit; the receiving device includes a receiving unit that receives the signal wherein the second control information is allocated in the data from the transmitting device. | 07-18-2013 |
20130329710 | PILOT ARRANGEMENT METHOD IN MOBILE RADIO COMMUNICATION SYSTEM AND TRANSMITTER/RECEIVER ADOPTING SAME - A mobile communication system in which a working frequency band is divided into a plurality of predetermined frequency bands, and time division multiplexing is performed, the mobile communication system includes a base station to insert a known pilot symbol into the plurality of predetermined frequency bands at a predetermined reference interval, and to insert to arrange the known pilot symbol into at least one of the plurality of predetermined bands at a smaller interval than the predetermined reference interval, wherein a frequency band in which the known pilot symbol is inserted at a smaller interval than the predetermined reference interval is to be set cyclically in time; and a mobile terminal to receive the known pilot symbol transmitted from the base station. | 12-12-2013 |
20140204880 | WIRELESS COMMUNICATION SYSTEM AND WIRELESS COMMUNICATION METHOD - A wireless communication system including a base station and a plurality of terminals, the wireless communication system uses a frame including a plurality of sub-frames, the sub-frames including a plurality of data symbols and guard intervals between the data symbols, each sub-frame being transmitted every frame period, and a different guard interval length being available for each sub-frame; configured to insert a guard interval of a fixed length between each of the data symbols in a specified sub-frame of the frame; a placement information determination section configured to determine placement information pertaining to a placement of a sub-frame to which guard intervals different in length from the guard interval of the fixed length are to be applied; and configured to multiplex the placement information determined by the placement information determination section into a transmission; wherein the plurality of terminals is notified of information containing the placement information. | 07-24-2014 |