| Patent application number | Description | Published |
|---|
| 20090103645 | DIGITAL MOBILE COMMUNICATION SYSTEM AND TRANSMISSION/RECEPTION METHOD THEREOF - A radio communication system in which a transmission station performs window function processing on a transmission symbol to which cyclic prefixes have been attached for each specified number of samples, then transmits the signal, and a receiving station extracts and demodulates effective signal portions from the received signal, wherein the transmission station uses a control channel to notify the receiving station of window width N | 04-23-2009 |
| 20090175374 | Multiple-Input Multiple-Output Transmission System - In a multiple-input multiple-output transmission system (MIMO system), a receive station detects whether or not there is an error in each data stream, estimates the state of the propagation path of each transmit antenna and reports, to the transmitting side, re-transmission necessary/unnecessary information, for every data stream, created based upon whether or not there is an error, and the state of the propagation path of each transmit antenna. A transmit station decides a transmit antenna that transmits a data stream requiring re-transmission, based upon the reported state of the propagation path of each transmit antenna, and re-transmits the data stream requiring re-transmission from the transmit antenna decided. | 07-09-2009 |
| 20110013585 | PILOT SIGNAL TRANSMISSION METHOD AND MOBILE COMMUNICATION SYSTEM - A method of transmitting pilot signals for channel compensation in a mobile communication system is disclosed. In the disclosed method, a first pilot signal and a second pilot signal are time-division multiplexed together with a data signal of a user into a time-division multiplexed signal which data signal is assigned a certain bandwidth; the time-division multiplexed signal is frequency-division multiplexed together with time division multiplexed signals of other users when wirelessly transmitted; and the first pilot signal is assigned a bandwidth larger than the bandwidth of the data signal and the second pilot signal is assigned a bandwidth smaller than the bandwidth of the data signal. | 01-20-2011 |
| 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 |
| 20110271162 | TRANSMITTER DEVICE, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD - In a communication system, a transmitter device transmits data to a receiver device for performing error-correcting decoding processing by combining received data and retransmitted data. The transmitter device selects one of a first set of schemes of an M number of modulation and coding schemes as a modulation and coding scheme (MCS) of first data according to communication quality information obtained from the receiver device when the first data is initially transmitted, and selects one of a second set of schemes of an N number of MCSs (N| 11-03-2011 | |
| 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 |
| 20120045986 | WIRELESS COMMUNICATION SYSTEM, RELAY STATION, RECEIVER STATION, AND WIRELESS COMMUNICATION METHOD - A relay station that includes a receiver that receives, from a transmitter station, a signal in which known data used for propagation path estimation is assigned to a first region determined by a combination of a frequency domain and a time domain and predetermined data is assigned to a second region that is different from the first region. The relay station also includes a processor that performs processing for generating a signal in which the known data is assigned to the second region in the signal received by the receiver, and a transmitter that transmits the signal generated by the processor. | 02-23-2012 |
| 20120046043 | WIRELESS COMMUNICATION SYSTEM, RECEIVER STATION, AND WIRELESS COMMUNICATION METHOD - A wireless communication system includes a transmitter station and a receiver station capable of performing wireless communication via a relay station. The relay station includes a receiver that receives the signals transmitted by the transmitter station. The relay station also includes a signal processor that performs predetermined signal processing on the signals received by the receiver, and eliminates the later one of two same signals received by the receiver. The relay station further includes a transmitter that transmits the earlier one of the two same signals to the receiver station after the signal processing performed by the signal processor. | 02-23-2012 |
| 20120058730 | MODULATION SWITCHING METHOD, TRANSMISSION STATION, AND RECEIVING STATION - A modulation switching method performed in a radio communication system is disclosed. In the method, difference information between the first channel quality information fed back from the receiving station and second channel quality information used to determine a modulation method is generated and is sent as control information is sent to the receiving station, with the transmission station. Switch information from the difference information received as the control information and third channel quality information being previous information in the receiving station are acquired, and data signal is demodulated based on the switch information, with the receiving station. | 03-08-2012 |
| 20120063523 | COMMUNICATION SYSTEM, INFORMATION TRANSMISSION METHOD, CODE SETTING METHOD, BASE STATION, AND MOBILE STATION - A communication system includes a communication station that converts a value information into a code value based on a corresponding relationship in which a difference between a first value information and a second value information is set to any value equal to or greater than two, where the second value information corresponds to a code value where an error occurs in one bit of the code value corresponding to the first value information. | 03-15-2012 |
