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1. 发明申请

US20100260284A1 PILOT TRANSMISSION METHOD, MIMO TRANSMISSION DEVICE, AND MIMO RECEPTION DEVICE 审中-公开
标题翻译：导频传输方法，MIMO传输设备和MIMO接收设备
公开(公告)号：US20100260284A1
公开(公告)日：2010-10-14
申请号：US12742894
申请日：2008-12-09
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： H04L27/00
CPC分类号： H04B7/0671 , H04L27/2601 , H04L27/2607
摘要： Provided is a MIMO transmission device which can effectively perform a pilot transmission by using a surplus sample generated in a pilot symbol while maintaining the pilot separation accuracy at a reception side. The MIMO transmission device (100) transmits a pilot symbol as follows. That is, in a first pilot transmission symbol section, a transmission section of a pilot signal transmitted from a first transmission antenna is partially overlapped by a pilot transmission section of a second transmission antenna. In a second pilot transmission symbol section, a pilot transmission section of the first transmission antenna is partially overlapped by a pilot transmission section of a third antenna. Among the pilot signals transmitted from the first antenna, the interference portions overlapped by transmission pilot signals from other antennas are different between the first pilot transmission symbol section and the second pilot transmission symbol section.
摘要翻译：提供一种MIMO传输装置，其可以通过在导频符号中生成的剩余采样同时在接收侧保持导频分离精度来有效地执行导频发送。 MIMO发送装置（100）如下发送导频符号。也就是说，在第一导频发送符号部分中，从第一发送天线发送的导频信号的发送部分由第二发送天线的导频发送部分重叠。在第二导频发送符号部分中，第一发送天线的导频发送部分由第三天线的导频发送部分重叠。在从第一天线发送的导频信号中，与来自其他天线的发送导频信号重叠的干扰部分在第一导频传输符号部分和第二导频传输符号部分之间是不同的。

2. 发明申请

US20100254485A1 PILOT TRANSMISSION METHOD, MIMO TRANSMISSION DEVICE, AND MIMO RECEPTION DEVICE 审中-公开
标题翻译：导频传输方法，MIMO传输设备和MIMO接收设备
公开(公告)号：US20100254485A1
公开(公告)日：2010-10-07
申请号：US12746750
申请日：2008-12-12
申请人： Isamu Yoshii , Atsushi Sumasu , Tomohiro Imai , Hidenori Kayama , Hidenori Matsuo , Yoshiko Saito , Seigo Nakao , Shinsuke Takaoka
发明人： Isamu Yoshii , Atsushi Sumasu , Tomohiro Imai , Hidenori Kayama , Hidenori Matsuo , Yoshiko Saito , Seigo Nakao , Shinsuke Takaoka
IPC分类号： H04L27/00
CPC分类号： H04B7/0671 , H04B7/0413 , H04B7/0613 , H04B7/0684 , H04B7/10
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 communicates with the MIMO transmission device. The MIMO transmission device (100) includes phase adjustment units (130-1, 130-2) which are controlled by a pilot transmission control unit (170) to multiply parallel pilot signals by a phase adjustment coefficient group so as to adjust the pilot signal transmission timing. The pilot transmission control unit (170) differentiates the order of the transmitting antennas in accordance with the pilot transmission timing between an even-number subcarrier group and an odd-number subcarrier group. At a reception side, a path not influenced by the inter-path interference is extracted for each of the combinations of the transmitting antennas and the subcarrier groups. A channel estimation value is calculated according to the extracted path so as to improve the channel estimation accuracy.
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传输装置和与MIMO传输装置进行通信的MIMO接收装置。 MIMO传输设备（100）包括由导频传输控制单元（170）控制以将并行导频信号乘以相位调整系数组的相位调整单元（130-1,130-2），以便调整导频信号传输时机。导频传输控制单元根据偶数子载波组和奇数子载波组之间的导频发送定时来区分发送天线的顺序。在接收侧，针对发送天线和子载波组的每个组合提取不受路径间干扰影响的路径。根据提取的路径计算信道估计值，以提高信道估计精度。

3. 发明申请

US20100284487A1 WIRELESS TRANSMISSION DEVICE AND WIRELESS TRANSMISSION METHOD 审中-公开
标题翻译：无线传输设备和无线传输方法
公开(公告)号：US20100284487A1
公开(公告)日：2010-11-11
申请号：US12812449
申请日：2009-01-14
申请人： Atsushi Sumasu , Isamu Yoshii , Tomohiro Imai , Daichi Imamura , Seigo Nakao
发明人： Atsushi Sumasu , Isamu Yoshii , Tomohiro Imai , Daichi Imamura , Seigo Nakao
IPC分类号： H04L27/00
CPC分类号： H04J11/0083 , H04B7/068
摘要： A wireless transmission method for improving the reception characteristic of a preamble. The wireless transmission method allows the patterns of subcarriers (transmitting antenna Tx1: 1, 2, 3, 5, 6, 7, 8, . . . , transmitting antenna Tx2: 4, 9, 10, 12, 13, 14, . . . ) in which preamble sequences are continuously arranged to be changed in a frequency direction. With this, the preamble sequences can be arranged at random subcarrier intervals and, when the autocorrelation values of the preamble sequences are obtained in a time domain, the peak value of the sidelobe becomes small, thereby making it possible to prevent a timing detection error.
摘要翻译：一种用于改善前导码的接收特性的无线传输方法。无线发送方法允许子载波的模式（发送天线Tx1：1,2,3,5,6,7,8 ...，发送天线Tx2：4,9,10,12,13,14，...，14。），其中前导序列被连续地布置成在频率方向上改变。由此，能够以随机子载波间隔配置前导码序列，在时域中获得前导码序列的自相关值时，旁瓣的峰值变小，能够防止定时检测错误。

4. 发明申请

US20110222525A1 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：US20110222525A1
公开(公告)日：2011-09-15
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： H04J1/00
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. 发明申请

US20100222003A1 RADIO COMMUNICATION SYSTEM, RADIO BASE STATION DEVICE, AND TRANSMISSION CONTROL METHOD 有权
标题翻译：无线电通信系统，无线基站设备和传输控制方法
公开(公告)号：US20100222003A1
公开(公告)日：2010-09-02
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： H04B15/00
CPC分类号： H04W72/082 , H04L5/0032 , H04W52/243 , H04W72/0413
摘要： It is possible to provide a transmission control method, a radio communication system, and a radio base station device which can reduce the time required until an inter-cell interference is reduced so as to improve the system throughput. A base station (200) includes: an FFT unit (210) which receives an interference report transmitted by using a common radio resource common to adjacent cells from a plurality of radio terminals (100) existing in different adjacent cells; and an adaptive FFR processing unit (230) which controls adaptive FFR processing in a downstream line of the local cell according to the reception interference report. Thus, by receiving an interference report directly from the radio terminals (100) existing in adjacent cells, it is possible to modify the transmission mode by considering the interference state in the adjacent cells. This eliminates the need of sending a report on a transmission mode modification which has been conventionally sent between adjacent base stations (200). This reduces the signaling required in the system, which improves the system throughput.
摘要翻译：可以提供一种传输控制方法，无线电通信系统和无线电基站装置，其可以减少小区间干扰减少所需的时间，从而提高系统吞吐量。基站（200）包括：FFT单元（210），其接收通过使用来自存在于不同相邻小区中的多个无线终端（100）的相邻小区共用的公共无线资源来发送的干扰报告; 以及根据接收干扰报告来控制本地小区的下游线路中的自适应FFR处理的自适应FFR处理单元（230）。因此，通过直接从相邻小区中存在的无线终端（100）接收干扰报告，可以通过考虑相邻小区中的干扰状态来修改发送模式。这消除了发送关于传统上在相邻基站（200）之间发送的传输模式修改的报告的需要。这减少了系统中所需的信令，这提高了系统吞吐量。

6. 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。

7. 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。

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

US06993343B2 Base station device and wireless communication method 失效
公开(公告)号：US06993343B2
公开(公告)日：2006-01-31
申请号：US10111260
申请日：2001-08-27
申请人： Isamu Yoshii , Osamu Kato , Kenichi Miyoshi , Atsushi Sumasu
发明人： Isamu Yoshii , Osamu Kato , Kenichi Miyoshi , Atsushi Sumasu
IPC分类号： H04Q7/20 , H04L12/26
CPC分类号： H04W28/22 , H04L1/0003 , H04L1/0009 , H04L1/0025 , H04L1/0034 , H04L1/16 , H04L1/18 , H04W72/06 , H04W72/1231 , H04W72/1247 , H04W88/08 , H04W88/181 , Y02D70/164
摘要： A DRC signal detecting section 113 demodulates a signal outputted from a despreading section 112 and detects a DRC signal; a transmitted-ratio calculating section 101 calculates the ratio of an amount of transmitted data to the total amount of data; an assigning section 102 decides the assignment of communication resources to each communication terminal based on the DRC signal which is detected by DRC signal detecting section 113 and the transmitted-ratio which is calculated by transmitted-ratio calculating section 101.

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