Patent application number | Description | Published |
20100015927 | RADIO COMMUNICATION DEVICE AND RADIO COMMUNICATION METHOD - Disclosed are a radio communication device and a radio communication method capable of suppressing fluctuations of interference given to an adjacent cell while maintaining a beam gain to a UE of a local cell even when a transmission beam is switched. According to the device and the method, ST | 01-21-2010 |
20100061475 | RE-TRANSMISSION IN A MIMO COMMUNICATION SYSTEM - A method for re-transmission in a multiple-input multiple-output (MIMO) communication system, the method comprising: performing spatial mapping of one or more retransmitted data streams and one or more newly transmitted data streams, wherein the spatial mapping comprises switching bits between the re-transmission data streams and the new transmission data streams. | 03-11-2010 |
20100111228 | RADIO COMMUNICATION APPARATUS AND RADIO COMMUNICATION METHOD - Provided is a wireless communication apparatus wherein channel estimation accuracy is improved while keeping the position of each bit in a frame, even when a modulation system having a large modulation multiple value is used for a data symbol. In the wireless communication apparatus ( | 05-06-2010 |
20100192037 | RADIO COMMUNICATION APPARATUS AND REDUNDANCY VERSION TRANSMISSION CONTROL METHOD - Optimal error rate performance can always be obtained and the number of retransmissions can be minimized in IR-type HARQ using an LDPC code as an error correction code. An LDPC encoding section | 07-29-2010 |
20100290383 | RETRANSMISSION METHOD, BASE STATION, AND USER DEVICE IN MULTICAST SYSTEM - Disclosed are a retransmission method, a base station, and a user device in a multicast system. In order to reduce uplink signaling resource, a new MNI (Multiple NACK Indicator) message is added to an uplink common feedback channel in an existing E-MBMS system. The MNI message enables decision of an XOR retransmission group which satisfies the XOR retransmission condition. As compared to a conventional XOR retransmission, the number of uplink signalings does not depend on the number of receivers. That is, when a plenty of receptions are present, it is possible to significantly reduce uplink signalings. | 11-18-2010 |
20100290548 | WIRELESS COMMUNICATION APPARATUS, WIRELESS COMMUNICATION SYSTEM AND WIRELESS COMMUNICATION METHOD - When power scaling is applied to multi-user MIMO, a reduction in transmission rate is suppressed and transmission efficiency is improved. When signals are transmitted through spatial multiplexing from a wireless base station | 11-18-2010 |
20110096761 | COMMUNICATION DEVICE, BASE STATION, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD - There are provided a communication device, a base station, a communication system, and a communication method that make it possible to yield a diversity effect by cooperative relay without involvement of disproportionateness in data received by an eNB even when one of parties has unsuccessfully exchanged data. After received an ACK signal from a repeater | 04-28-2011 |
20110096877 | WIRELESS RECEIVER AND FEEDBACK METHOD - Disclosed is a wireless receiver and feedback method for reducing the amount of CQI feedback in a MIMO channel. A channel estimation unit ( | 04-28-2011 |
20110098004 | WIRELESS COMMUNICATION DEVICE AND QUANTIZATION METHOD - Provided is a wireless communication device which can improve the notification accuracy of the channel state information (CSI) without straining the feedback circuit. In this device, a channel estimator ( | 04-28-2011 |
20110105016 | RELAY STATION IN MOBILE COMMUNICATION SYSTEM, MOBILE STATION, AND RELAY TRANSMISSION METHOD - Provided is a mobile communication system capable of eliminating the use of a control channel for transmitting specific area information and suppressing the overhead caused by a frequency change process for a mobile station to receive the specific area information. In the mobile communication system, a relay station ( | 05-05-2011 |