公开(公告)号：US20100315962A1

公开(公告)日：2010-12-16

申请号：US12521514

申请日：2007-12-27

申请人： Tomohiro Imai ,  Shozo Okasaka ,  Katsuhiko Hiramatsu

发明人： Tomohiro Imai ,  Shozo Okasaka ,  Katsuhiko Hiramatsu

IPC分类号： H04J3/14 ,  H04J3/00

CPC分类号： H04L5/0053 ,  H04B7/2615 ,  H04L1/0015 ,  H04L1/0029 ,  H04L5/0051 ,  H04L25/023

摘要： Provided is a base station device capable of reducing a DL-CSI feedback amount in a TDD type radio communication system in which a DL bandwidth is different from a UL bandwidth. In this device, a demultiplexing unit (133) separates an UL pilot, a DL-CQI, and a DL-CSI fed back from a plurality of UEs as communication partners; a channel estimation unit (134) performs channel sounding by using a UL pilot from a UE in which a DL channel and a UL channel are allocated by overlapping a part of the bandwidth so as to obtain UL-CSI; a control DL-CSI acquisition unit (135) performs interpolation of DL-CSI by using the DL-CSI of some RB contained in the bandwidth where the DL channel and the UL channel fed back from the UE are not overlapped; and a DL close loop control unit (104) combines the estimated UL-CSI and the interpolated DL-CSI so as to use them as DL-CSI for controlling the DL close loop.

摘要翻译： 提供一种能够减少DL带宽与UL带宽不同的TDD型无线通信系统中的DL-CSI反馈量的基站装置。 在该设备中，解复用单元（133）将从多个UE反馈的UL导频，DL-CQI和DL-CSI分离为通信伙伴; 信道估计单元（134）通过使用来自通过重叠一部分带宽来分配DL信道和UL信道的UE的UL导频来执行信道探测，以获得UL-CSI; 控制DL-CSI获取单元（135）通过使用包含在从UE反馈的DL信道和UL信道不重叠的带宽中的一些RB的DL-CSI来执行DL-CSI的内插; 并且DL闭环控制单元（104）将估计的UL-CSI和内插的DL-CSI组合，以便将它们用作用于控制DL闭环的DL-CSI。

公开(公告)号：US08902764B2

公开(公告)日：2014-12-02

申请号：US12521514

申请日：2007-12-27

申请人： Tomohiro Imai ,  Shozo Okasaka ,  Katsuhiko Hiramatsu

发明人： Tomohiro Imai ,  Shozo Okasaka ,  Katsuhiko Hiramatsu

IPC分类号： H04L5/00 ,  H04B7/26 ,  H04L1/00 ,  H04L25/02

CPC分类号： H04L5/0053 ,  H04B7/2615 ,  H04L1/0015 ,  H04L1/0029 ,  H04L5/0051 ,  H04L25/023

摘要： Provided is a base station device capable of reducing a DL-CSI feedback amount in a TDD type radio communication system in which a DL bandwidth is different from a UL bandwidth. In this device, a demultiplexing unit (133) separates an UL pilot, a DL-CQI, and a DL-CSI fed back from a plurality of UEs as communication partners; a channel estimation unit (134) performs channel sounding by using a UL pilot from a UE in which a DL channel and a UL channel are allocated by overlapping a part of the bandwidth so as to obtain UL-CSI; a control DL-CSI acquisition unit (135) performs interpolation of DL-CSI by using the DL-CSI of some RB contained in the bandwidth where the DL channel and the UL channel fed back from the UE are not overlapped; and a DL close loop control unit (104) combines the estimated UL-CSI and the interpolated DL-CSI so as to use them as DL-CSI for controlling the DL close loop.

摘要翻译： 提供一种能够减少DL带宽与UL带宽不同的TDD型无线通信系统中的DL-CSI反馈量的基站装置。 在该设备中，解复用单元（133）将从多个UE反馈的UL导频，DL-CQI和DL-CSI分离为通信伙伴; 信道估计单元（134）通过使用来自通过重叠一部分带宽来分配DL信道和UL信道的UE的UL导频来执行信道探测，以获得UL-CSI; 控制DL-CSI获取单元（135）通过使用包含在从UE反馈的DL信道和UL信道不重叠的带宽中的一些RB的DL-CSI来执行DL-CSI的内插; 并且DL闭环控制单元（104）将估计的UL-CSI和内插DL-CSI组合，以便将它们用作用于控制DL闭环的DL-CSI。

公开(公告)号：US08345562B2

公开(公告)日：2013-01-01

申请号：US11915847

申请日：2006-06-01

申请人： Masayuki Hoshino ,  Ryohei Kimura ,  Yasuaki Yuda ,  Tomohiro Imai ,  Kenichi Miyoshi ,  Katsuhiko Hiramatsu

发明人： Masayuki Hoshino ,  Ryohei Kimura ,  Yasuaki Yuda ,  Tomohiro Imai ,  Kenichi Miyoshi ,  Katsuhiko Hiramatsu

IPC分类号： H04J1/16

CPC分类号： H04L1/0061 ,  H04B7/0417 ,  H04B7/0632 ,  H04B7/0697 ,  H04L1/0002 ,  H04L1/0021 ,  H04L1/203

摘要： A spatial multiplex number controlling method and others wherein streams can be separated for each of receivers and the transmission efficiency can be improved. In a receiving apparatus, a PER is calculated from a history of CRC test results per stream multiplex number. A reception quality and an offset corresponding to the calculated PER are fed back to a transmitting apparatus. The transmitting apparatus assigns, based on the fed-back reception quality and offset, the streams, thereby controlling the stream multiplex number.

摘要翻译： 空间多路复用数控制方法等，其中可以为每个接收机分离流，并且可以提高传输效率。 在接收装置中，根据每个流多路复用数的CRC测试结果的历史来计算PER。 将与计算出的PER对应的接收质量和偏移反馈到发送装置。 发送装置基于反馈接收质量和偏移分配流，从而控制流多路复用数。

公开(公告)号：US08320828B2

公开(公告)日：2012-11-27

申请号：US12523280

申请日：2008-01-25

申请人： Tomohiro Imai ,  Masayuki Hoshino ,  Yasuaki Yuda ,  Katsuhiko Hiramatsu

发明人： Tomohiro Imai ,  Masayuki Hoshino ,  Yasuaki Yuda ,  Katsuhiko Hiramatsu

IPC分类号： H04B7/15

CPC分类号： H04B7/0417 ,  H04B7/0632 ,  H04L1/0003 ,  H04L1/06 ,  H04L1/1835 ,  H04L2001/0093 ,  H04W72/085

摘要： In a multiuser MIMO system, entire system throughput achieved during retransmission is significantly enhanced. When an interference signal addressed to another user equipment (UE2) 200b has been demodulated successfully, a user equipment (UE1) 200a holds the demodulated data pertaining to the interference signal, and feeds back ACK information about the UE2 and CQI information achieved after elimination of the interference signal to a radio base station (BS) 100. When the UE2 performs retransmission after ended in a receiving failure and when the UE1 has demodulated the interference signal addressed to the UE2 successfully, the BS changes the distribution of communication resources in such a way that communication resources for the UE2 become larger than those for the UE1. At the time of retransmission, the UE1 eliminates the interference signal from a newly-received signal by use of previously-held demodulated data pertaining to the interference signal, and the UE2 combines data pertaining to the desired signal held during previous receiving failure with data pertaining to the retransmitted signal by means of soft combining.

摘要翻译： 在多用户MIMO系统中，在重传期间实现的整个系统吞吐量显着增强。 当寻址到另一用户设备（UE2）200b的干扰信号已被成功解调时，用户设备（UE1）200a保存与干扰信号相关的解调数据，并且反馈关于UE2的ACK信息和消除后的CQI信息 对无线基站（BS）100的干扰信号。当UE2在接收到故障结束后进行重发时，并且当UE1成功地解调了寻址到UE2的干扰信号时，BS改变这样的通信资源的分配 UE2的通信资源变得大于UE1的通信资源的方式。 在重发时，UE1通过使用与干扰信号有关的先前保持的解调数据来消除来自新接收信号的干扰信号，并且UE2将与先前接收失败期间保持的期望信号有关的数据与属于 通过软组合到重发信号。

公开(公告)号：US20100075703A1

公开(公告)日：2010-03-25

申请号：US12523280

申请日：2008-01-25

申请人： Tomohiro Imai ,  Masayuki Hoshino ,  Yasuaki Yuda ,  Katsuhiko Hiramatsu

发明人： Tomohiro Imai ,  Masayuki Hoshino ,  Yasuaki Yuda ,  Katsuhiko Hiramatsu

IPC分类号： H04B15/00 ,  H04B1/04 ,  H04L1/08 ,  G06F11/14 ,  H04B1/10

CPC分类号： H04B7/0417 ,  H04B7/0632 ,  H04L1/0003 ,  H04L1/06 ,  H04L1/1835 ,  H04L2001/0093 ,  H04W72/085

摘要： In a multiuser MIMO system, entire system throughput achieved during retransmission is significantly enhanced. When an interference signal addressed to another user equipment (UE2) 200b has been demodulated successfully, a user equipment (UE1) 200a holds the demodulated data pertaining to the interference signal, and feeds back ACK information about the UE2 and CQI information achieved after elimination of the interference signal to a radio base station (BS) 100. When the UE2 performs retransmission after ended in a receiving failure and when the UE1 has demodulated the interference signal addressed to the UE2 successfully, the BS changes the distribution of communication resources in such a way that communication resources for the UE2 become larger than those for the UE1. At the time of retransmission, the UE1 eliminates the interference signal from a newly-received signal by use of previously-held demodulated data pertaining to the interference signal, and the UE2 combines data pertaining to the desired signal held during previous receiving failure with data pertaining to the retransmitted signal by means of soft combining.

摘要翻译： 在多用户MIMO系统中，在重传期间实现的整个系统吞吐量显着增强。 当寻址到另一用户设备（UE2）200b的干扰信号已被成功解调时，用户设备（UE1）200a保存与干扰信号相关的解调数据，并且反馈关于UE2的ACK信息和消除后的CQI信息 对无线基站（BS）100的干扰信号。当UE2在接收到故障结束后进行重发时，并且当UE1成功地解调了寻址到UE2的干扰信号时，BS改变这样的通信资源的分配 UE2的通信资源变得大于UE1的通信资源的方式。 在重发时，UE1通过使用与干扰信号有关的先前保持的解调数据来消除来自新接收信号的干扰信号，并且UE2将与先前接收失败期间保持的期望信号有关的数据与属于 通过软组合到重发信号。

公开(公告)号：US20100015927A1

公开(公告)日：2010-01-21

申请号：US12446911

申请日：2007-10-23

申请人： Yasuaki Yuda ,  Masayuki Hoshino ,  Katsuhiko Hiramatsu ,  Tomohiro Imai ,  Ryohei Kimura

发明人： Yasuaki Yuda ,  Masayuki Hoshino ,  Katsuhiko Hiramatsu ,  Tomohiro Imai ,  Ryohei Kimura

IPC分类号： H04B7/00 ,  H04L27/28

CPC分类号： H04B7/0617 ,  H04B7/0632 ,  H04B7/0695 ,  H04W16/28 ,  H04W24/10 ,  H04W72/02 ,  H04W72/046

摘要： 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, ST201 to ST205 measure CQI using one transmission beam selected from a plurality of transmission beams and a random pattern selected from a plurality of random patterns, for all the transmission beams and for all the combinations of the random patterns. ST206 selects the transmission beam and the random pattern having the maximum CQI among the measured CQI. ST207 transmits the transmission beam and the random pattern selected in ST206 as feedback information to a transmission device (100).

摘要翻译： 公开了一种能够抑制给予相邻小区的干扰的波动的无线电通信装置和无线电通信方法，同时即使当发送波束被切换时，也保持对本地小区的UE的波束增益。 根据该装置和方法，ST201〜ST205使用从多个发送波束中选择的一个发送波束和从多个随机模式中选择的随机模式，针对所有发送波束和随机模式的所有组合来测量CQI 。 ST206在所测量的CQI中选择发送波束和具有最大CQI的随机模式。 ST207将在ST206中选择的发送波束和随机模式作为反馈信息发送到发送装置（100）。

公开(公告)号：US20090268621A1

公开(公告)日：2009-10-29

申请号：US11915847

申请日：2006-06-01

申请人： Masayuki Hoshino ,  Ryohei Kimura ,  Yasuaki Yuda ,  Tomohiro Imai ,  Kenichi Miyoshi ,  Katsuhiko Hiramatsu

发明人： Masayuki Hoshino ,  Ryohei Kimura ,  Yasuaki Yuda ,  Tomohiro Imai ,  Kenichi Miyoshi ,  Katsuhiko Hiramatsu

IPC分类号： H04L12/26 ,  H04L27/28

CPC分类号： H04L1/0061 ,  H04B7/0417 ,  H04B7/0632 ,  H04B7/0697 ,  H04L1/0002 ,  H04L1/0021 ,  H04L1/203

摘要： A spatial multiplex number controlling method and others wherein streams can be separated for each of receivers and the transmission efficiency can be improved. In a receiving apparatus, a PER is calculated from a history of CRC test results per stream multiplex number. A reception quality and an offset corresponding to the calculated PER are fed hack to a transmitting apparatus. The transmitting apparatus assigns, based on the fed-back reception quality and offset, the streams, thereby controlling the stream multiplex number.

摘要翻译： 空间多路复用数控制方法等，其中可以为每个接收机分离流，并且可以提高传输效率。 在接收装置中，根据每个流多路复用数的CRC测试结果的历史来计算PER。 将接收质量和与计算出的PER相对应的偏移量馈送给发送装置。 发送装置基于反馈接收质量和偏移分配流，从而控制流多路复用数。

公开(公告)号：USRE44200E1

公开(公告)日：2013-05-07

申请号：US13444664

申请日：2006-03-13

申请人： Tomohiro Imai ,  Ayako Horiuchi ,  Akihiko Nishio ,  Kenichi Kuri ,  Hiroaki Morino

发明人： Tomohiro Imai ,  Ayako Horiuchi ,  Akihiko Nishio ,  Kenichi Kuri ,  Hiroaki Morino

IPC分类号： H04B15/00 ,  H04B7/15

CPC分类号： H04B7/15557 ,  H04B7/2606 ,  H04L1/0003 ,  H04L1/0009 ,  H04L2001/0092

摘要： A wireless communication system enabling multihop communication while maintaining the system throughput and preventing degradation of the user throughput. In the system, a BS (base station) determines the relaying method (whether an RS performs reproduction relay or nonreproduction relay) of the RS (relaying station) and the MCS of multihop communication according to the reception quality (the line quality among an MS2, the RS, and the BS) of the pilot for nonreproduction relay, the reception quality (the line quality between the RS and the BS) of the pilot 2 for reproduction relay, and the line quality (the line quality between the MS2 and the RS) measured at the RS. The determination result is transmitted as relay information to the RS and to the MS2 (a mobile station (2)) through the RS. The MS2 encodes and modulates the uplink data with the MCS based on the relay information and transmits the data to the RS. The RS relays the uplink data while selecting nonreproduction relay or reproduction relay according to the relay information.

摘要翻译： 一种能够实现多跳通信同时维持系统吞吐量并防止用户吞吐量恶化的无线通信系统。 在该系统中，BS（基站）根据接收质量（MS2中的线路质量）确定RS（中继站）的RS中继方法（RS是否执行再生中继或不再生中继） 用于非再生继电器的导频的RS，和BS），用于再现中继的导频2的接收质量（RS与BS之间的线路质量）和线路质量（MS2与 RS）。 确定结果通过RS作为中继信息发送到RS和MS2（移动台（2））。 MS2通过基于中继信息的MCS对上行数据进行编码和调制，并将数据发送给RS。 RS根据中继信息选择非再生继电器或再生继电器时中继上行数据。

公开(公告)号：US08064503B2

公开(公告)日：2011-11-22

申请号：US11576039

申请日：2005-09-26

申请人： Yasuaki Yuda ,  Tomohiro Imai ,  Kenichi Miyoshi

发明人： Yasuaki Yuda ,  Tomohiro Imai ,  Kenichi Miyoshi

IPC分类号： H04B1/38 ,  H04W4/00

CPC分类号： H04L27/2626 ,  H04B7/0615 ,  H04L27/2647

摘要： A multicarrier communication apparatus and the like wherein the arithmetic amount required for calculating a reception weight by which a multicarrier signal is to be multiplied is suppressed, while the reception characteristic for the multicarrier signal is improved. In the apparatus, a subcarrier transmission weight generating part (513) generates a transmission weight of each subcarrier, based on channel information of each subcarrier received from a channel information generating part (511) and a reception weight of each subcarrier group received from a subcarrier group reception weight generating part (512). The subcarrier transmission weight generating part (513) inputs the generated transmission weights of the respective subcarriers to the corresponding ones of multipliers (522).

摘要翻译： 在多载波信号的接收特性提高的情况下，抑制用于计算要乘以多载波信号的接收权重所需的算术量的多载波通信装置等。 在该装置中，副载波发送权重生成部（513）根据从信道信息生成部（511）接收到的各子载波的信道信息和从子载波接收到的各子载波组的接收权重，生成各副载波的发送权重 组接收权重生成部（512）。 子载波传输权重产生部分（513）将生成的各个子载波的传输权重输入到相应的乘法器（522）。

公开(公告)号：US08050619B2

公开(公告)日：2011-11-01

申请号：US12282331

申请日：2007-03-29

申请人： Ayako Horiuchi ,  Kenichi Miyoshi ,  Tomohiro Imai ,  Hiroaki Morino

发明人： Ayako Horiuchi ,  Kenichi Miyoshi ,  Tomohiro Imai ,  Hiroaki Morino

IPC分类号： H04B3/36

CPC分类号： H04B7/022 ,  H04B7/026 ,  H04B7/15592 ,  H04L1/0643 ,  H04L1/1887 ,  H04L2001/0097

摘要： Provided is a mobile communication system capable of obtaining a diversity effect even when a signal received by a relay station has an error in a corporate relay to which time space encoding is applied. In this mobile communication system, when S1 has no error and S2 has an error, a relay station (1) does not perform relay transmission at time t (Null) and relay-transmits S1* to a base station at time t+T. That is, in this case, the relay station (1) relay-transmits at time t+T only S1 to be transmitted at time t when no error is contained in either S1 or S2. Moreover, when S1 has an error and S2 has no error, the relay station (1) relay-transmits S2 at time t and does not perform relay transmission at time t+T (Null). That is, in this case, the relay station (1) relay-transmits only S2 to be transmitted at time t+T at time t if no error is contained in either S1 or S2.

摘要翻译： 提供了即使当中继站接收的信号在应用了时间空间编码的公司中继中具有错误时，也能够获得分集效应的移动通信系统。 在该移动通信系统中，当S1没有错误且S2有错误时，中继站（1）在时刻t（Null）不执行中继传输，并且在时刻t + T向基站中继发送S1 *。 也就是说，在这种情况下，中继站（1）在时刻t + T仅中继 - 在S1或S2中不包含错误的情况下，在时间t发送要发送的S1。 此外，当S1发生错误且S2没有错误时，中继站（1）在时刻t中继发送S2，在时刻t + T（Null）不进行中继发送。 也就是说，在这种情况下，如果在S1或S2中没有包含错误，则中继站（1）在时间t仅中继仅发送在时间t + T发送的S2。