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Katsuhiko Hiramatsu
Katsuhiko Hiramatsu, Leuven BG
| Patent application number | Description | Published |
|---|---|---|
| 20100041413 | RADIO BASE STATION DEVICE, RADIO TERMINAL DEVICE, AND RADIO COMMUNICATION SYSTEM - It is possible to provide a radio communication system, a radio base station device, and a radio terminal device capable of reducing the power consumption in a radio terminal device without thinning pilot signals used for measuring upstream line quality. In the radio base station device ( | 02-18-2010 |
| 20100061359 | RADIO COMMUNICATION BASE STATION DEVICE AND RADIO COMMUNICATION METHOD - Provided is a radio communication base station device capable of suppressing degradation of a signal error ratio characteristic for a mobile station in the vicinity of the cell center when a plurality of signals whose transmission power is to be controlled are frequency-multiplexed or code-multiplexed. In the device ( | 03-11-2010 |
| 20100093304 | WIRELESS COMMUNICATION DEVICE AND EMERGENCY SIGNAL TRANSMISSION METHOD - Provided is a wireless communication device which can transmit an emergency signal without deteriorating data transmission efficiency. In the device, a modulating section ( | 04-15-2010 |
| 20100113007 | WIRELESS COMMUNICATION BASE STATION APPARATUS, WIRELESS COMMUNICATION MOBILE STATION APPARATUS, AND METHOD FOR MAPPING RESPONSE SIGNAL IN ARQ - In ARQ where a plurality of mobile stations share and use a single channel for response signals (ACK/HACK signals), a wireless communication base station apparatus can prevent failure of the ARQ control. In this apparatus, a CRC part ( | 05-06-2010 |
| 20100325520 | RADIO COMMUNICATION DEVICE AND REPETITION METHOD - Provided is a radio communication device which can obtain the maximum improvement effect of the error rate characteristic by repletion when an LDPC code is used as an error correction code. In this device, an LDPC encoding unit ( | 12-23-2010 |
| 20110075760 | RADIO TRANSMISSION DEVICE AND RADIO COMMUNICATION METHOD - It is possible to provide a radio transmission device and a radio communication method which can reduce inter-sequence interference and reduce the circuit size and the calculation amount even when RS is transmitted with different transmission bandwidths. Sequence length decision units ( | 03-31-2011 |
Katsuhiko Hiramatsu, Kadoma-Shi JP
| Patent application number | Description | Published |
|---|---|---|
| 20100195702 | RADIO COMMUNICATION DEVICE AND RESPONSE SIGNAL SPREADING METHOD - A radio communication device capable of randomizing both inter-cell interference and intra-cell interference. In this device, a spreading section ( | 08-05-2010 |
| 20110032888 | RADIO COMMUNICATION DEVICE AND RADIO COMMUNICATION METHOD - Provided is a radio communication device which can prevent interference between SRS and PUCCH when the PUCCH transmission bandwidth fluctuates and suppress degradation of CQI estimation accuracy by the band where no SRS is transmitted. The device includes: an SRS code generation unit ( | 02-10-2011 |
Katsuhiko Hiramatsu, Leuven JP
| Patent application number | Description | Published |
|---|---|---|
| 20100197223 | RELAY STATION, MOBILE STATION, AND RELAY TRANSMISSION METHOD IN MOBILE COMMUNICATION SYSTEM - Provided is a mobile communication system which includes a plurality of RAT (Radio Access Technology) and can eliminate the need of a control channel for reporting RAT information so as to prevent congestion or shortage of the control channel capacity. In the mobile communication system, an LTE relay station ( | 08-05-2010 |
| 20100266060 | RADIO COMMUNICATION DEVICE AND METHOD FOR DETERMINING DELAY AMOUNT OF CDD - A radio communication device capable of obtaining the frequency diversity effect when a CDD is used for the open-loop transmission. A CDD control information determination section ( | 10-21-2010 |
Katsuhiko Hiramatsu, Yokosuka-Shi JP
| Patent application number | Description | Published |
|---|---|---|
| 20080261545 | COMMUNICATION TERMINAL APPARATUS AND BASE STATION APPARATUS - An allocation section | 10-23-2008 |
| 20090270043 | MOBILE COMMUNICATION SYSTEM - A mobile communication system which is capable of, when carrying out mobile communication using a shared channel, increasing in efficiency of transmission timing of the data transmission rate request value to prevent wasteful power consumption and hence reduce power consumption. A mobile station apparatus of the mobile communication system measures CIR of the received signal from a base station apparatus at a CIR measuring section, and decides the data transmission rate request value corresponding to the measured CIR value at a rate request value deciding section. Also, it detects an error of the received signal at a CRC section, and, when no error is found, calculates a difference between the average data transmission rate from a base station apparatus and the data transmission request value at a rate request value transmission controlling section. Then, it transmits the data transmission rate request value to the base station apparatus only when the obtained difference is larger than a threshold value. | 10-29-2009 |
| 20100097998 | BASE STATION APPARATUS AND COMMUNICATION METHOD - In order to reduce interference between cells through hopping and use frequencies in a good propagation situation, a scheduler section | 04-22-2010 |
Katsuhiko Hiramatsu, Leuver BE
| Patent application number | Description | Published |
|---|---|---|
| 20090323641 | RADIO COMMUNICATION MOBILE STATION DEVICE AND MCS SELECTION METHOD - Provided is a radio communication mobile station device capable of preventing a transmission delay when a transmission data amount is increased in a radio communication system where persistent scheduling is performed. In this device, an MCS selection unit ( | 12-31-2009 |