| Patent application number | Description | Published |
|---|
| 20080268782 | Receiving device and communication system - A receiving device and a communication system wherein the frequency usage efficiency is raised to improve the communication throughput. The receiving device comprises a receiving unit that receives multicarrier signals in which a plurality of subcarriers are divided into a plurality of subcarrier blocks (frequency blocks) each including at least one subcarrier and in which signals to be transmitted to receiving devices are allocated on a subcarrier block basis; an estimating unit that estimates, for each of the subcarrier blocks, quality values indicative of the reception statuses of the signals allocated to the plurality of subcarrier blocks; and a notifying unit that notifies a transmitting device of information indicative of a high quality subcarrier block having a high quality value in the quality values, a quality value in the high quality subcarrier block, and an interval of the subcarrier blocks having the quality value of which a difference from the quality value in the high-quality subcarrier block falls within a predetermined threshold value. | 10-30-2008 |
| 20080293398 | TRANSMISSION PROCESSING METHOD IN MOBILE COMMUNICATIONS SYSTEM AND BASE STATION - In a case where multiple kinds of frames having different lengths (Ngi_s and Ngi_l) of guard intervals inserted before the head of the effective data, the length of the guard intervals are adjusted in such a manner that at least the position of a part of the effective data is are apart from frame timing by the same amount. Thereby, on the receiving end, it is always possible to perform reception processing such as FFT processing in an appropriate time division at a fixed timing, without causing sample deviation of the effective data. | 11-27-2008 |
| 20090131070 | WIRELESS COMMUNICATION SYSTEM, BASE STATION DEVICE AND MOBILE STATION DEVICE - A wireless communication system comprises a mobile station and a base station, which use a plurality of communication channels and a pilot channel corresponding to at least one of the communication channels. The base station has a transmitting unit that employs at least one of the communication channels as a priority channel and transmits channel information of this priority channel and the other channels by use of a communication channel other than the pilot channel. The mobile station has a determining unit that determines a reception level of the pilot channel; an acquiring unit that acquires the channel information transmitted via the communication channel other than the pilot channel; and a deciding unit that decides, as an available communication channel, at least one of the communication channels based on both the channel information acquired by the acquiring unit and the reception level determined by the determining unit. | 05-21-2009 |
| 20090204864 | TRANSMISSION CONTROLLING METHOD, SENDER APPARATUS AND RECEIVER APPARATUS FOR WIRELESS COMMUNICATION SYSTEM - In a wireless communication system, a sender apparatus sends a data block, for each of a plurality of stream data, with data block identification information, which does not conflict between stream data, annexed, and a reception apparatus performs a re-sending synthesis process for a data block received already and a re-sending data block to which the same data block identification information is individually annexed based on the data block identification information annexed to the received data block. Consequently, also in a case wherein the number of transmission streams between the sender apparatus and the reception apparatus is varied (reduced), the matching property of the data block which is a re-sending synthesis target can be maintained and communication can be continued normally. | 08-13-2009 |
| 20090296667 | Communication Method In Mobile Communication System, And Mobile Station And Base Station In The Same System - A scheduling method for transmitting an uplink signal from a mobile station to a base station comprises transmitting the uplink signal in a first scheduling mode in which the mobile station can transmit the uplink data without permission of the base station if an uplink communication state between the base station and the mobile station is higher than or equal to a predetermined quality; and transmitting the uplink signal in a second scheduling mode in which the permission is necessary for the mobile station transmitting the uplink data if the uplink communication state is lower than the predetermined quality. | 12-03-2009 |
| 20100124299 | METHOD FOR MIMO DECODING, APPARATUS FOR MIMO DECODING, AND MIMO RECEIVER - There is provided a method for MIMO decoding, based on a channel estimated value between a plurality of transmitting antennas and a plurality of receiving antennas, a received signal received by the plurality of receiving antennas, including: in obtaining a unitary matrix Q and a triangular matrix R through QR decomposition of a channel estimated value matrix H, creating the triangular matrix R such that a sum of scalars of non-diagonal elements of the triangular matrix R is the minimum; and estimating a signal transmitted from the plurality of transmitting antennas through the use of the created triangular matrix R, the unitary matrix Q, and the received signal received by the plurality of receiving antennas. | 05-20-2010 |
| 20100220681 | CONTROL CHANNEL INFORMATION TRANSMISSION METHOD, AND BASE STATION AND TERMINAL USING THE SAME METHOD - A method for transmitting a control channel information to perform an adaptive coding and modulation comprising performing error correction coding at a predetermined coding rate for the control channel information; modulating according to a predetermined modulation scheme and transmitting the error correction coded control channel information; and further, prior to the modulation, performing code decimation or code repetition of the error correction coded signal, according to whether or not Multi Input Multi Output is applied. | 09-02-2010 |
| 20100284362 | Communication Method In Mobile Communication System, And Mobile Station And Base Station In The Same System - The present method adds uplink data to a transmission request sent to the base station from the mobile station for obtaining permission for data transmission, or to a channel establishment request sent from the mobile station to the base station for establishing a channel in order to send the transmission request therethrough. This makes it possible to suppress delay caused by negotiation prior to actual uplink data transmission as much as possible, thereby realizing efficient uplink data transmission, that is, improved throughput of uplink communication. | 11-11-2010 |
| 20110092166 | Radio Channel Control Method And Receiving Apparatus - A radio channel control method for controlling, in a radio communication system having a transmitter and a receiver, a radio channel from the transmitter toward the receiver. The method includes receiving a signal transmitted from the transmitter by the receiver, measuring reception quality of the signal, generating information which indicates increment or decrement of the reception quality, and controlling a modulation or coding for the radio channel based on the information. | 04-21-2011 |
| 20110111702 | Radio Channel Control Method And Receiving Apparatus - A radio channel control method for controlling, in a radio communication system having a transmitter and a receiver, a radio channel from the transmitter toward the receiver. The method includes receiving a signal transmitted from the transmitter by the receiver, measuring reception quality of the signal, generating information which indicates increment or decrement of the reception quality, and controlling a modulation or coding for the radio channel based on the information. | 05-12-2011 |
| 20110117857 | Radio Channel Control Method And Receiving Apparatus - A radio channel control method for controlling, in a radio communication system having a transmitter and a receiver, a radio channel from the transmitter toward the receiver. The method includes receiving a signal transmitted from the transmitter by the receiver, measuring reception quality of the signal, generating information which indicates increment or decrement of the reception quality, and controlling a modulation or coding for the radio channel based on the information. | 05-19-2011 |
| 20110136440 | Radio Channel Control Method And Receiving Apparatus - A radio channel control method for controlling, in a radio communication system having a transmitter and a receiver, a radio channel from the transmitter toward the receiver. The method includes receiving a signal transmitted from the transmitter by the receiver, measuring reception quality of the signal, generating information which indicates increment or decrement of the reception quality, and controlling a modulation or coding for the radio channel based on the information. | 06-09-2011 |
| 20110143681 | Radio Channel Control Method And Receiving Apparatus - A radio channel control method for controlling, in a radio communication system having a transmitter and a receiver, a radio channel from the transmitter toward the receiver. The method includes receiving a signal transmitted from the transmitter by the receiver, measuring reception quality of the signal, generating information which indicates increment or decrement of the reception quality, and controlling a modulation or coding for the radio channel based on the information. | 06-16-2011 |
| 20110165852 | Radio Channel Control Method And Receiving Apparatus - A radio channel control method for controlling, in a radio communication system having a transmitter and a receiver, a radio channel from the transmitter toward the receiver. The method includes receiving a signal transmitted from the transmitter by the receiver, measuring reception quality of the signal, generating information which indicates increment or decrement of the reception quality, and controlling a modulation or coding for the radio channel based on the information. | 07-07-2011 |
