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1. 发明授权

US09226301B2 System and method to shorten the time taken to improve inter-cell interference mitigation performance using adaptive fractional frequency reuse 有权
$System and method to shorten the time taken to improve inter-cell interference mitigation performance using adaptive fractional frequency reuse$
标题翻译：使用自适应分数频率重用来缩短提高小区间干扰减轻性能所花费的时间的系统和方法
公开(公告)号：US09226301B2
公开(公告)日：2015-12-29
申请号：US12678099
申请日：2008-09-25
申请人： Isamu Yoshii , Atsushi Sumasu , Tomohiro Imai , Naoya Yosoku , Hidenori Kayama
发明人： Isamu Yoshii , Atsushi Sumasu , Tomohiro Imai , Naoya Yosoku , Hidenori Kayama
IPC分类号： H04W72/08 , H04W72/04 , H04W52/24 , H04L5/00
CPC分类号： H04W72/082 , H04L5/0032 , H04W52/243 , H04W72/0413
摘要： A wireless base station apparatus includes an interference report receiver configured to receive interference reports transmitted on a shared radio resource from a plurality of wireless terminals that are present in a plurality of adjacent cells that are adjacent to a target cell, the shared radio resource being comprised of a plurality of carriers and being shared between the plurality of adjacent cells, and an adaptive fractional frequency reuse controller configured to control adaptive fractional frequency reuse processing in a downlink of the target cell, based on the received interference reports showing a downlink reception quality, wherein the interference reports are transmitted using selected carriers from the plurality of carriers by the plurality of wireless terminals, based on the downlink reception quality.
摘要翻译：无线基站装置包括：干扰报告接收器，被配置为从存在于与目标小区相邻的多个相邻小区中的多个无线终端接收在共享无线资源上发送的干扰报告，所述共享无线资源包括并且在多个相邻小区之间共享，以及自适应分数频率重用控制器，被配置为基于接收到的示出下行链路接收质量的干扰报告来控制目标小区的下行链路中的自适应分数频率重用处理，其中，所述干扰报告基于所述下行链路接收质量，由所述多个无线终端从所述多个载波中使用所选择的载波来发送。

2. 发明授权

US08902764B2 Base station device, terminal device, and closed loop control method 有权
标题翻译：基站装置，终端装置和闭环控制方法
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。

3. 发明授权

US08422941B2 Radio communication method 有权
标题翻译：无线电通信方式
公开(公告)号：US08422941B2
公开(公告)日：2013-04-16
申请号：US13452542
申请日：2012-04-20
申请人： Akihiko Nishio , Yasuaki Yuda , Tomohiro Imai
发明人： Akihiko Nishio , Yasuaki Yuda , Tomohiro Imai
IPC分类号： H04B7/14 , H04B3/36
CPC分类号： H04B7/15542 , H04L5/0007 , H04L5/0032 , H04L5/0048 , H04L25/0226 , H04W16/14 , H04W48/08 , H04W88/04
摘要： A wireless communication method and the like for improving the system throughput. The wireless communication method is used in a mobile communication system having a base station apparatus, a relay station apparatus and a mobile station apparatus #1. In a first transmission step, a first transport signal, which includes data addressed to MS #1, is transmitted from BS to RS. In a second transmission step, a second transport signal, which includes a pilot generated by BS, is transmitted from BS. Simultaneously, in the second transmission step, a relay signal, which includes the data addressed to MS #1 and also includes a pilot that is generated by RS and that has a particular orthogonal relationship with the pilot generated by BS, is transmitted from RS to MS #1.
摘要翻译：一种用于提高系统吞吐量的无线通信方法等。无线通信方法用于具有基站装置，中继站装置和移动台装置＃1的移动通信系统。在第一传输步骤中，包括寻址到MS＃1的数据的第一传输信号从BS发送到RS。在第二传输步骤中，从BS发送包括由BS产生的导频的第二传输信号。同时，在第二发送步骤中，包括寻址到MS＃1的数据并且还包括由RS生成并与由BS产生的导频具有特定正交关系的导频的中继信号从RS发送到 MS＃1。

4. 发明授权

US08391245B2 Terminal device, base station device, and frequency resource allocation method 有权
标题翻译：终端设备，基站设备和频率资源分配方法
公开(公告)号：US08391245B2
公开(公告)日：2013-03-05
申请号：US12672253
申请日：2008-08-08
申请人： Takaaki Kishigami , Atsushi Sumasu , Isamu Yoshii , Tomohiro Imai
发明人： Takaaki Kishigami , Atsushi Sumasu , Isamu Yoshii , Tomohiro Imai
IPC分类号： H04W4/00
CPC分类号： H04W16/12 , H04B17/382 , H04J11/005 , H04L5/0005 , H04L5/0037 , H04L5/006 , H04L5/0062 , H04L5/0094 , H04W72/082
摘要： It is possible to realize reduction of inter-cell interference by an adaptive FFR with a low delay. A terminal (200) includes: an interference condition detection unit (209) which detects an interference condition of other cell to the local cell; a cell identification unit (210) which acquires signals for cell identification of each base station; and a sub-band selection unit (211) which selects a sub-band used for the downstream line transmission to the local station according to the interference condition detected by the interference condition detection unit (209) and the signals for cell identification of each base station obtained by the cell identification unit (210). Thus, the terminal (200) can autonomously select a small sub-band of inter-cell interference and to realize reduction of the inter-cell interference by the adaptive FFR with a low delay.
摘要翻译：可以通过具有低延迟的自适应FFR来实现小区间干扰的降低。终端（200）包括：干扰状况检测单元（209），其检测其他小区对本地小区的干扰状况; 小区识别单元，其获取每个基站的小区识别信号; 以及根据由干扰条件检测单元（209）检测到的干扰条件和每个基站的小区识别信号，选择用于到本地站的下行线路传输的子带的子带选择单元（211）由小区识别单元（210）获得的站。因此，终端（200）可以自主地选择小区间小区间干扰，并以低延迟实现自适应FFR的小区间干扰减少。

5. 发明授权

US08065579B2 Retransmission control scheme and wireless communication apparatus 有权
标题翻译：重传控制方案和无线通信装置
公开(公告)号：US08065579B2
公开(公告)日：2011-11-22
申请号：US11816885
申请日：2006-02-27
申请人： Masayuki Hoshino , Ryohei Kimura , Yasuaki Yuda , Tomohiro Imai , Kenichi Miyoshi
发明人： Masayuki Hoshino , Ryohei Kimura , Yasuaki Yuda , Tomohiro Imai , Kenichi Miyoshi
IPC分类号： G08C25/02 , H04L1/18
CPC分类号： H04L1/1893 , H04L1/0001 , H04L1/0013 , H04L1/0015 , H04L1/0026 , H04L1/0071 , H04L1/06 , H04L1/1819 , H04L1/1825 , H04L1/1845 , H04L25/0222
摘要： A retransmission control scheme and a wireless communication apparatus wherein the efficiency of retransmission control is enhanced to further improve the system throughput. In this wireless communication apparatus (100), an error occurrence factor addressing part (140) receives information related to the error occurrence factor of a transmitted packet or information related to the schemes of forming or transmitting a retransmittal packet corresponding to that error occurrence factor, and switches, based on the received information, the schemes of forming or transmitting the retransmittal packet. In this way, the schemes of forming or transmitting the retransmittal packet can be switched in accordance with the error occurrence factor of the transmitted packet. At the end of receiving the retransmittal packet, therefore, the performing of a decoding processor the like in accordance with that scheme of forming or transmitting can enhance the efficiency of the retransmission control. As a result, the system throughput can be improved.
摘要翻译：一种重传控制方案和一种无线通信装置，其中提高了重传控制的效率以进一步提高系统吞吐量。在该无线通信装置（100）中，错误发生因子寻址部（140）接收与所发送的分组的错误发生因子相关的信息或与形成或发送对应于该错误发生因子的重传分组的方案有关的信息，并且基于所接收的信息来切换形成或发送重传分组的方案。以这种方式，可以根据发送的分组的错误发生因素来切换形成或发送重传分组的方案。因此，在接收到重传分组的结束时，根据该形成或发送方案执行解码处理器等可以提高重传控制的效率。结果，可以提高系统吞吐量。

6. 发明申请

US20110165835A1 RADIO COMMUNICATION METHOD, RELAY STATION DEVICE, AND RADIO RECEIVER DEVICE 有权
标题翻译：无线电通信方法，中继站设备和无线接收设备
公开(公告)号：US20110165835A1
公开(公告)日：2011-07-07
申请号：US13046376
申请日：2011-03-11
申请人： Ayako HORIUCHI , Kenichi Kuri , Kenichi Miyoshi , Akihiko Nishio , Tomohiro Imai
发明人： Ayako HORIUCHI , Kenichi Kuri , Kenichi Miyoshi , Akihiko Nishio , Tomohiro Imai
IPC分类号： H04B7/14
CPC分类号： H04L1/18 , H04B7/15557 , H04L2001/0097
摘要： Provided is a radio communication method or the like for making compatible an improvement in error rate characteristics and a reduction in delay. The radio communication method is used in a mobile communication system including a mobile station, a relay station and a base station. A transmitted signal containing a signal addressed to the base station is transmitted at first from the mobile station to the relay station. A non-reproduced relay signal obtained in the relay station from the transmitted signal is transmitted from the relay station to the base station. On the basis of the reception result of the non-reproduced relay signal at the base station, a re-transmission request of the transmitted signal is transmitted from the base station. A reproduced relay signal, as obtained from the transmitted signal in the relay station, is transmitted from the relay station to the base station in accordance with the re-transmission request transmitted from the base station.
摘要翻译：提供了一种用于使兼容的错误率特性的改善和延迟的减少的无线电通信方法等。无线电通信方法用于包括移动台，中继站和基站的移动通信系统。首先从移动台向中继站发送包含寻址到基站的信号的发送信号。在中继站从所发送的信号获得的非再生中继信号从中继站发送到基站。基于基站的未再生中继信号的接收结果，从基站发送发送信号的重发请求。根据从基站发送的重传请求，从中继站向基站发送从中继站中的发送信号获得的再生中继信号。

7. 发明授权

US07929988B2 Radio reception apparatus and radio reception method 有权
标题翻译：无线接收装置和无线接收方法
公开(公告)号：US07929988B2
公开(公告)日：2011-04-19
申请号：US11816824
申请日：2006-02-20
申请人： Ayako Horiuchi , Kenichi Kuri , Kenichi Miyoshi , Akihiko Nishio , Tomohiro Imai
发明人： Ayako Horiuchi , Kenichi Kuri , Kenichi Miyoshi , Akihiko Nishio , Tomohiro Imai
IPC分类号： H04M1/00
CPC分类号： H04L1/18 , H04B7/15557 , H04L2001/0097
摘要： Provided is a radio communication method or the like for making compatible an improvement in error rate characteristics and a reduction in delay. The radio communication method is used in a mobile communication system (1) including a mobile station (10), a relay station (20) and a base station (30). A transmitted signal containing a signal addressed to the base station (30) is transmitted at first from the mobile station (10) to the relay station (20). A non-reproduced relay signal obtained in the relay station (20) from the transmitted signal is transmitted from the relay station (20) to the base station (30). On the basis of the reception result of the non-reproduced relay signal at the base station (30), a re-transmission request of the transmitted signal is transmitted from the base station (30). A reproduced relay signal, as obtained from the transmitted signal in the relay station (20), is transmitted from the relay station (20) to the base station (30) in accordance with the re-transmission request transmitted from the base station (30).
摘要翻译：提供了一种用于使兼容的错误率特性的改善和延迟的减少的无线电通信方法等。无线电通信方法用于包括移动台（10），中继站（20）和基站（30）的移动通信系统（1）中。首先从移动台（10）向中继站（20）发送包含寻址到基站（30）的信号的发送信号。从所述中继站（20）向所述基站（30）发送从所述发送信号在所述中继站（20）中获得的未再生的中继信号。基于在基站（30）处的未再生的中继信号的接收结果，从基站（30）发送发送的信号的再发送请求。根据从基站（30）发送的再发送请求，从中继站（20）向基站（30）发送从中继站（20）中的发送信号获得的再生中继信号，）。

8. 发明申请

US20100272034A1 BASE STATION DEVICE, MOBILE STATION DEVICE, COMMUNICATION SYSTEM, CHANNEL ESTIMATION METHOD, TRANSMISSION ANTENNA DETECTION METHOD, AND PROGRAM 审中-公开
标题翻译：基站设备，移动站设备，通信系统，信道估计方法，传输天线检测方法和程序
公开(公告)号：US20100272034A1
公开(公告)日：2010-10-28
申请号：US12679891
申请日：2008-09-26
申请人： Tomohiro Imai , Atsushi Sumasu , Isamu Yoshii
发明人： Tomohiro Imai , Atsushi Sumasu , Isamu Yoshii
IPC分类号： H04W72/04 , H04K1/10 , H04B1/38
CPC分类号： H04B1/7083 , H04B1/70735 , H04J11/0069 , H04L5/0023 , H04L5/0048 , H04L5/0053 , H04L25/0204 , H04L25/0226 , H04L25/03343 , H04L27/2613 , H04L27/2655 , H04L2025/03414 , H04L2025/03426
摘要： It is possible to provide a base station device, a mobile station device, a communication system, a channel estimation method, a transmission antenna detection method, and a program which can employ PVS as the SCH transmission diversity method and avoid a side lobe to improve the adjacent cell search performance. When employing the PVS on the frequency axis of the SCH in these, different precoding weights are applied between sub carrier groups so as to correlate a plurality of PSC sequences to a precoding weight matrix and identify the PSC sequence. Moreover, the number of sub carriers to be allocated to sub carrier groups is correlated to the number of transmission antennas so as to detect periodicity of the self-correlation characteristic of a reception SCH signal, thereby identifying the number of transmission antennas.
摘要翻译：可以提供一种基站装置，移动站装置，通信系统，信道估计方法，发送天线检测方法以及可以使用PVS作为SCH发送分集方法的程序，并且避免旁瓣改善相邻小区搜索性能。当在其中在SCH的频率轴上使用PVS时，在子载波组之间应用不同的预编码权重，以便将多个PSC序列与预编码权重矩阵相关联并且识别PSC序列。此外，分配给子载波组的子载波的数量与发送天线的数量相关，以便检测接收SCH信号的自相关特性的周期性，从而识别发送天线的数量。

9. 发明申请

US20100260235A1 PILOT TRANSMISSION METHOD, MIMO TRANSMISSION DEVICE, MIMO RECEPTION DEVICE WHICH PERFORMS COMMUNICATION WITH MIMO TRANSMISSION DEVICE 审中-公开
标题翻译：导频传输方法，MIMO传输设备，MIMO接收设备，其利用MIMO传输设备进行通信
公开(公告)号：US20100260235A1
公开(公告)日：2010-10-14
申请号：US12746466
申请日：2008-12-10
申请人： Isamu Yoshii , Atsushi Sumasu , Tomohiro Imai , Hidenori Kayama
发明人： Isamu Yoshii , Atsushi Sumasu , Tomohiro Imai , Hidenori Kayama
IPC分类号： H04B1/707
CPC分类号： H04L5/0048 , H04B7/0671 , H04L5/0023 , H04L23/02 , H04L25/0226
摘要： It is possible to provide a novel pilot transmission method which can calculate an accurate channel estimation value, a MIMO transmission device using the pilot transmission method, and a MIMO reception device which performs communication with the MIMO transmission device. The MIMO transmission device (100) includes a cyclic shift processing unit (150) which cyclically shifts a first pilot signal sequence spread by a spread code 1 and second pilot signal sequence spread by a spread code 2 with different shift amounts. The first pilot signal sequence and the second pilot signal sequence which have been cyclically shifted are transmitted from different transmitting antennas at the same pilot transmission symbol section. Thus, by changing the shift amount of the cyclic shift process executed on each pilot signal sequence spread by the respective spread codes, it is possible to improve the pilot separation accuracy at a reception side. This enables more accurate calculation of a channel estimation value.
摘要翻译：可以提供一种可以计算准确的信道估计值的新型导频传输方法，使用导频传输方法的MIMO传输装置，以及与MIMO传输装置进行通信的MIMO接收装置。 MIMO传输装置（100）包括循环移位处理单元（150），循环移位处理单元（150），循环移位由扩频码扩展的第一导频信号序列和以扩频码扩展的第二导频信号序列。已经循环移位的第一导频信号序列和第二导频信号序列在相同的导频传输符号部分从不同的发射天线发射。因此，通过改变对各扩频码扩频的每个导频信号序列执行的循环移位处理的移位量，可以提高接收端的导频分离精度。这使得能够更准确地计算信道估计值。

10. 发明授权

US07729443B2 Wireless communication apparatus and wireless communication method 有权
标题翻译：无线通信装置和无线通信方法
公开(公告)号：US07729443B2
公开(公告)日：2010-06-01
申请号：US11722831
申请日：2005-12-26
申请人： Masaru Fukuoka , Sadaki Futagi , Daichi Imamura , Tomohiro Imai
发明人： Masaru Fukuoka , Sadaki Futagi , Daichi Imamura , Tomohiro Imai
IPC分类号： H04L27/00 , H04L23/00
CPC分类号： H04B7/02 , H04L1/0071 , H04L1/04 , H04L1/08 , H04L5/0007 , H04L5/0044 , H04L5/0048 , H04L5/0058 , H04L25/0204 , H04L25/0232
摘要： A wireless communication method of repetition system and the like for ensuring that when the same data symbols are combined, a diversity gain is achieved. In a step (ST 420), a data symbol placing part (105) decides destination places of respective replicated data symbols (S1-S4) such that the same data symbols are not placed at destination place numbers (7,8) of data symbols that exhibit poor channel estimation precisions. In a step (ST 430), the data symbol placing part (105) places, in accordance with the decision in the foregoing step (ST 420), the four data symbols (S1-S4), which are received from a repetition part (102), in one frame received from a channel estimation error predicting part (104).
摘要翻译：一种用于确保当相同的数据符号被组合时的重复系统等的无线通信方法，实现了分集增益。在步骤（ST 420）中，数据符号放置部（105）决定各个复制数据符号（S1-S4）的目的地位置，使得相同的数据符号不被放置在数据符号的目的地地点号码（7,8）表现出较差的信道估计精度。在步骤（ST430）中，数据符号放置部（105）根据上述步骤（ST420）的判定，设置从重复部分接收的四个数据符号（S1〜S4） 102），在从信道估计误差预测部（104）接收的一帧中。

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