Patent application number | Description | Published |
20090003485 | Mimo Transmitting Apparatus And Mimo Transmitting Method - A MIMO transmitting apparatus wherein a low power consumption and a high performance can be achieved by taking the influence of variation in communication distance into account. In this apparatus, a low power consumption design part ( | 01-01-2009 |
20090010353 | Multi-Antenna Communication Method and Multi-Antenna Communicaton Apparatus - A multi-antenna communication method capable of improving the retransmission performance in a multi-antenna transmission. In this method, firstly, the reception quality of a substream to be retransmitted is acquired (Step | 01-08-2009 |
20090028259 | MIMO TRANSMITTING APPARATUS, AND DATA RETRANSMITTING METHOD IN MIMO SYSTEM - MIMO transmitting apparatus wherein data to be retransmitted and data to be transmitted anew are rearranged, thereby using HARQ technique to improve the reliability of the system transmission, while increasing the system throughput and improving the efficiency of the whole data transmission. In this apparatus, a retransmittal data selecting means ( | 01-29-2009 |
20090028263 | MIMO COMMUNICATION APPARATUS AND DATA RETRANSMISSION METHOD - A MIMO communication apparatus wherein HARQ technique is utilized, in a MIMO system, to simplify feedback information and hence reduce the amount of information to be transmitted, thereby saving the transmission resources of the system, while improving the efficiency of data transmission. Additionally, this MIMO communication apparatus has a simple structure, while being capable of performing a reliable data retransmission. This MIMO communication apparatus comprises means (buffer | 01-29-2009 |
20090034586 | TRANSMISSION SYSTEM, TRANSMISSION METHOD, RECEPTION SYSTEM, AND RECEPTION METHOD - First normalizing means ( | 02-05-2009 |
20090044065 | RETRANSMITTING METHOD, RADIO RECEIVING APPARATUS, AND MULTIANTENNA RADIO COMMUNICATION SYSTEM - A retransmitting method, a radio receiving apparatus and a multiantenna communication system that are capable of improving the system throughput. According to this method, the receiving apparatus determines whether a received substream has an error and hence a retransmittal is necessary ( | 02-12-2009 |
20090046806 | WIRELESS COMMUNICATION METHOD IN MULTIANTENNA COMMUNICATION SYSTEM - A wireless communication method in which use of the HERQ technique brings about an improved throughput of data transmission. In this method, if the number of retransmissions n is equal or below an upper limit value (ST | 02-19-2009 |
20090052354 | TIME-SPACE BLOCK PRECODING METHOD IN MULTI-USER DOWN LINK - There is provided a down link multi-user time-space code precoding method including: a step (S | 02-26-2009 |
20090052560 | TRANSMISSION METHOD AND TRANSMISSION APPARATUS USED IN MULTIANTENNA WIRELESS COMMUNICATION SYSTEM - A transmission bit and transmission power distributing method that can reduce the arithmetic amount in a multiantenna-input/multiantenna-output (MIMO) wireless communication system. This method comprises steps of calculating a signal-to-interference-noise ratio (SINR) gain after MIMO detection of each of transport substreams (S | 02-26-2009 |
20090080546 | LIMITATION FEEDBACK METHOD FOR MULTIANTENNA SYSTEM, CHANNEL PARAMETER GENERATING METHOD, AND WIRELESS RECEIVER - A channel parameter generating method realizing limited feedback of a MIMO system. In this method, a channel parameter of a MIMO channel fed from a wireless receiver back to a wireless transmitter is generated. Channel estimation is carried out by using a signal received through a MIMO channel, the ranks of the space domain correlation matrix and the time domain correlation matrix of the MIMO channel are derived from the channel matrix obtained by the channel estimation, an operation to decrease the number of dimensions of the column of the estimated channel matrix is carried out if the rank of the derived space domain correlation matrix is smaller than that of the derived time domain correlation matrix, thereby a channel parameter is obtained, an operation to decrease the number of dimensions of the row of the estimated channel matrix is carried out if the rank of the derived time domain correlation matrix is smaller than that of the derived space domain correlation matrix, and a channel parameter is obtained. | 03-26-2009 |
20090122887 | CARRIER ALLOCATION METHOD IN MULTI CELL ORTHOGONAL FREQUENCY DIVISION MULTIPLE ACCESS SYSTEM - Provided is a carrier allocation method in a multi cell OFDMA system capable of improving the system capacity and the bit error rate performance. The method includes a step (S | 05-14-2009 |
20090147866 | COMMUNICATION APPARATUS, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD - A communication apparatus capable of improving the spectrum usage rate of a system, especially, the spectrum usage rate in connection with both a fast fading and a channel estimation error as compared with the conventional sub-band adaptive method, while reducing the degree of the difficulty in achieving the adaptation, and further reducing the feedback overhead. In this apparatus, a sub-band group AMC parameter selecting part ( | 06-11-2009 |
20090180567 | TRANSMISSION DEVICE, MIMO COMMUNICATION SYSTEM, AND TRANSMISSION DIVERSITY METHOD - Provided are a transmission device and a transmission diversity method, which can suppress degradation of a transmission diversity performance even under the circumstances having a space correlation, in the case of performing a transmission diversity MIMO communication. The transmission device comprises an orthogonal conversion unit ( | 07-16-2009 |
20090190684 | WIRELESS COMMUNICATION METHOD, RADIO RECEIVING APPARATUS, RADIO TRANSMITTING APPARATUS, AND WIRELESS COMMUNICATION SYSTEM - A wireless communication system capable of achieving adaptive STTD (Space-time Transmit Diversity). In this system, a receiving apparatus uses a channel estimation to calculate SINR (Signal to Interference and Noise Ratio) of each of substreams in all the combinations of transmission antennas and also calculate the performance of the whole system in all the combinations of transmission antennas, thereby deciding a particular combination, which provides the best performance of the whole system, and obtaining a parameter for antenna selection. The SINR of each substream in the decided particular combination is used to decide an AMC parameter. A transmitting apparatus performs STTD and AMC based on the AMC parameter fed back from the receiving apparatus, and further selects, based on the antenna selection parameter fed back from the receiving apparatus, a particular combination of transmission antennas for performing a transmission. | 07-30-2009 |
20090252236 | RETRANSMITTING METHOD AND TRANSMITTING METHOD IN MULTI-ANTENNA TRANSMISSION - A transmitting apparatus capable of enhancing the certainty of data transmission of MIMO system, improving the system throughput, and providing a retransmission technique adaptive to the multi-antenna transmission. In this apparatus, a serial/parallel converting part ( | 10-08-2009 |
20090268836 | MULTI-PILOT GENERATION METHOD AND DETECTION METHOD IN MULTI-ANTENNA COMMUNICATION SYSTEM - Provided are a multi-pilot generation method and a detection method in a multi-antenna communication system. In the method, a transmission side superimposes a first preamble sequence and a third preamble sequence to generate a second preamble sequence, which is subjected to serial/parallel conversion before the first preamble sequence and the second preamble sequence are successively transmitted from a plurality of antennas by time division. A reception side receives the first preamble sequence and the second preamble sequence by a plurality of antennas, separates the third preamble sequence from the second preamble sequence by a spatial division process, and performs a pilot correlation process by using the first preamble sequence and the separated third preamble sequence. | 10-29-2009 |
20110267973 | COMMUNICATION APPARATUS AND METHOD FOR REPORTING RECEPTION QUALITY - A communication apparatus wherein in a case of reporting a reception quality measured for each of a plurality of subbands, even if the band is widened, the degradation in transmission efficiency can be avoided. In this apparatus, an antenna ( | 11-03-2011 |
20110296283 | WIRELESS COMMUNICATION APPARATUS - Disclosed is an encoding processing apparatus in which reception precision characteristics are improved by specially adapting puncture processing in respect of the code words for each encoding system. A puncture section ( | 12-01-2011 |
20110296285 | WIRELESS COMMUNICATION APPARATUS - Disclosed is a wireless communication apparatus in which reception precision characteristics are improved, by specially adapting the modulating processing in respect of the code words for each encoding system. A wireless communication apparatus ( | 12-01-2011 |
20120322506 | SMALL BASE STATION APPARATUS AND METHOD OF ASSIGNING SUBBANDS - Provided is a small base station apparatus (HeNB), wherein interference between the HeNB and an MeNB can be inhibited, without any exchange of information between the HeNB and the MeNB. In the HeNB ( | 12-20-2012 |
20130003716 | COMPACT BASE STATION APPARATUS AND FRAME TIMING DIFFERENCE INFORMATION ACQUIRING METHOD - Provided is a compact base station apparatus (HeNB) whereby frame timing can precisely be synchronized between HeNB and MeNB, thereby suppressing the interference in an upstream channel. In HeNB ( | 01-03-2013 |
20130148620 | NETWORK MANAGEMENT DEVICE, BASE STATION DEVICE AND NETWORK MANAGEMENT METHOD - Provided is a network management device capable of suppressing interference of a preamble between cells while securing a predetermined resource. An FGW ( | 06-13-2013 |
20130231090 | SMALL-SIZED BASE STATION, MONITORING DEVICE, AND INSTALLATION LOCATION MANAGEMENT METHOD FOR SMALL-SIZED BASE STATION - A small-sized base station for which the installation location can be restricted to an appropriate range and can be appropriately managed. A small-sized base station ( | 09-05-2013 |
20130242872 | MONITORING DEVICE, AND INSTALLATION POSITION MANAGEMENT METHOD FOR SMALL-SIZED BASE STATION - A monitoring device ( | 09-19-2013 |
20130279419 | BASE STATION DEVICE AND TRANSMITTING METHOD - The present invention provides a base station device capable of improving the throughput of a whole network by minimizing interference between respective base stations. In a communication system including a plurality of base stations, which transmit a signal by using any of a plurality of different ABS patterns which are sub frame ABS patterns represented by the combination of a transmission sub frame for transmitting a signal and a non-transmission sub frame for suspending the transmission of the signal, a determining unit ( | 10-24-2013 |
20130288696 | SERVER APPARATUS, SMALL BASE-STATION APPARATUS, AND INTERFERENCE CONTROL METHOD - Provided are a server apparatus and an interference control method, wherein interference between cells is inhibited, and a drop in throughput of the entire network is also inhibited. An ABS configuration determining unit ( | 10-31-2013 |