公开(公告)号：US08300725B2

公开(公告)日：2012-10-30

申请号：US12377362

申请日：2007-11-29

申请人： Takaaki Kishigami ,  Hidenori Kayama

发明人： Takaaki Kishigami ,  Hidenori Kayama

IPC分类号： H04L27/00

CPC分类号： H04L25/0232 ,  H04L5/0023 ,  H04L5/0048

摘要： It is possible to provide a radio reception device, a radio transmission device, a radio reception method, and a radio transmission method which can improve the channel estimation accuracy and the reception quality. The radio reception device (200) includes: reception units (203, 204) which receive a data sequence added by a reference signal for channel estimation of a spatial propagation path at a predetermined interval; demodulation units (205, 206) which demodulate the data sequence; a channel estimation unit (208) which estimates a propagation path fluctuation state according to the reference signal in the data sequence and outputs a channel estimation value obtained by interpolating or extrapolating the data sequence; and a decoding processing unit (210) which decodes the data sequence by using the interpolated or extrapolated channel estimation value.

摘要翻译： 可以提供能够提高信道估计精度和接收质量的无线接收装置，无线发送装置，无线接收方法以及无线发送方法。 无线电接收装置（200）包括：接收单元（203,204），其以预定间隔接收由参考信号添加的用于信道估计的空间传播路径的数据序列; 解调单元（205,206），其解调所述数据序列; 信道估计单元，根据数据序列中的参考信号估计传播路径波动状态，并输出通过内插或外推数据序列获得的信道估计值; 以及解码处理单元，其通过使用内插或外插的信道估计值对数据序列进行解码。

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。

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。

公开(公告)号：US20080057994A1

公开(公告)日：2008-03-06

申请号：US11575017

申请日：2005-06-22

申请人： Jinsong Duan ,  Hidenori Kayama

发明人： Jinsong Duan ,  Hidenori Kayama

IPC分类号： H04B7/005

CPC分类号： H04W52/48 ,  H04W52/146 ,  H04W52/40

摘要： A mobile station device for selecting a TPC command to improve the transmission quality of a packet in an upstream circuit more reliably, so that it reduces the re-transmission in the upstream circuit to improve a sector throughput. In this mobile station device, a demodulate unit (210) outputs a received signal of each base station device to an error correction decode unit (220) and a TPC command select unit (240). The error correction decode unit (220) outputs an ACK/NACK of each base station device to a data re-transmission control unit (230) and the TPC command select unit (240). The TPC command select unit (240) selects the TPC command of the highest priority on the basis of the information of the ACK/NACK. A transmission power control unit (280) determines the transmission power according to the contents of the TPC command of the highest priority. Moreover, the transmission power control unit (280) determines the transmission power by an or-of-down method, in case a plurality of TPC commands of the highest priority are outputted from the TPC command select unit (240).

摘要翻译： 一种用于选择TPC命令以更可靠地提高上游电路中的分组的传输质量的移动站设备，从而减少了上游电路中的重传以提高扇区吞吐量。 在该移动站装置中，解调部（210）将每个基站装置的接收信号输出到纠错解码部（220）和TPC指令选择部（240）。 纠错解码单元（220）将每个基站装置的ACK / NACK输出到数据再发送控制单元（230）和TPC指令选择单元（240）。 TPC命令选择单元（240）基于ACK / NACK的信息选择最高优先级的TPC命令。 发送功率控制单元（280）根据具有最高优先级的TPC命令的内容确定发送功率。 此外，发送功率控制单元（280）在从TPC命令选择单元（240）输出多个最高优先级的TPC命令的情况下，通过降档方式确定发送功率。

公开(公告)号：US20080057963A1

公开(公告)日：2008-03-06

申请号：US11575037

申请日：2005-09-01

申请人： Hidenori Kayama ,  Jinsong Duan

发明人： Hidenori Kayama ,  Jinsong Duan

IPC分类号： H04Q7/20

CPC分类号： H04L1/0034 ,  H04L1/0002 ,  H04L1/0007 ,  H04L1/0009 ,  H04L1/0015 ,  H04L1/0025 ,  H04L1/1867 ,  H04L2001/0093

摘要： A mobile station apparatus selects an appropriate one of transmission rate instruction commands received from base station apparatuses to reduce the interference of the whole system and improve the sector throughput. In this mobile station apparatus (200), a demodulating section (210) outputs a received signal of each base station apparatus to an error correction decoding section (220), which then outputs the ACK/NACK and instruction command of each base station apparatus to a transmission rate control section (240), which then selects, based on the ACK/NACK information, from among the instruction commands received from the base station apparatuses, the instruction command that should be employed on a priority basis during an actual transmission rate control and that is received from a base station apparatus having a highest priority.

摘要翻译： 移动站装置选择从基站装置接收的适当的一个传输速率指令命令，以减少整个系统的干扰并提高扇区吞吐量。 在该移动台装置（200）中，解调部（210）将每个基站装置的接收信号输出到误差校正解码部（220），然后将纠错解码部（220）输出到各基站装置的ACK / NACK指令指令 传输速率控制部分（240），其根据ACK / NACK信息从基站装置接收的指令命令中选择在实际传输速率控制期间应优先采用的指令命令 并且从具有最高优先级的基站装置接收。

公开(公告)号：US20090052392A1

公开(公告)日：2009-02-26

申请号：US11816166

申请日：2006-01-19

申请人： Atsushi Sumasu ,  Hidenori Kayama ,  Hiroki Haga ,  Masayuki Hoshino ,  Katsuyoshi Naka ,  Junya Yamazaki ,  Ryohei Kimura

发明人： Atsushi Sumasu ,  Hidenori Kayama ,  Hiroki Haga ,  Masayuki Hoshino ,  Katsuyoshi Naka ,  Junya Yamazaki ,  Ryohei Kimura

IPC分类号： H04W36/02

CPC分类号： H04L1/1887 ,  H04W36/02

摘要： A base station, a mobile station and a retransmission control method for enabling communication to be more efficiently performed. In a communication system comprising a base station (100) and a mobile station (200), a time period required for the retransmission of a transport packet to complete is determined, and a retransmission control is performed, based on the required time period, to change the order of executing the retransmission of the transport packet and a handover. In this way, when it is estimated that the retransmission will complete soon, the retransmission is caused to complete in a handover source system, thereby avoiding waste of communication resources used in the preceding transmission and retransmission processes. When it is estimated that the retransmission will continue for a while, the communication resources used in the preceding transmission and retransmission processes are wasted, but a more appropriate MCS can be assigned, in a handover destination system, so as to perform a retransmission, thereby enabling communication to be efficiently performed.

摘要翻译： 基站，移动站和重发控制方法，能够更有效地进行通信。 在包括基站（100）和移动站（200）的通信系统中，确定传输分组完成重传所需的时间段，并根据所需时间进行重发控制， 改变执行传输分组的重传的顺序和切换。 以这种方式，当估计重传将很快完成时，在切换源系统中重新发送完成，从而避免浪费在前面的传输和重传过程中使用的通信资源。 当估计重传将持续一段时间时，在先前的传输和重传过程中使用的通信资源被浪费，但是在切换目的地系统中可以分配更适合的MCS以便执行重传，由此 使得能够有效地执行通信。

公开(公告)号：US20070298825A1

公开(公告)日：2007-12-27

申请号：US11577340

申请日：2005-09-28

申请人： Hidenori Kayama ,  Jinsong Duan

发明人： Hidenori Kayama ,  Jinsong Duan

IPC分类号： H04B7/005 ,  H04Q7/30

CPC分类号： H04W28/22 ,  H04W52/267

摘要： There are provided a base station device, a mobile station device, and a transmission rate control method capable of appropriately controlling the transmission rate. In the base station device (100), an upstream scheduling unit (150) calculates a desired transmission power reduction ratio of a mobile station device whose transmission power is to be reduced among the mobile stations devices in which upstream packet communication is in progress and which is in the soft handover state, and transmits the desired transmission power reduction ratio. Thus, the mobile station device (300) which receives the desired transmission power reduction ratio can get a direct index concerning the transmission power reduction and it can select an appropriate transmission power and an appropriate transmission rate for it. Moreover, the base station device (100) can rapidly make an adjustment to an appropriate reception power level since the mobile station device (300) rapidly makes an adjustment to an appropriate transmission power according to the desired transmission power reduction ratio. That is, it is possible to realize a base station device, a mobile station device, and a transmission rate control method capable of performing an appropriate transmission rate control.

摘要翻译： 提供了能够适当地控制传输速率的基站装置，移动站装置和传输速率控制方法。 在基站装置（100）中，上行调度部（150）在上行分组通信正在进行的移动台装置中计算要发送功率降低的移动台装置的期望的发送功率减少率， 处于软切换状态，并且发送期望的发送功率减少率。 因此，接收到期望的发送功率减少率的移动站装置（300）可以获得关于发送功率降低的直接指标，并且可以选择合适的发送功率和适当的发送速率。 此外，由于移动站装置（300）根据期望的发送功率降低率快速地对适当的发送功率进行调整，因此基站装置（100）能够快速地对适当的接收功率电平进行调整。 也就是说，可以实现能够执行适当的传输速率控制的基站设备，移动站设备和传输速率控制方法。

公开(公告)号：US06577617B1

公开(公告)日：2003-06-10

申请号：US09359127

申请日：1999-07-23

申请人： Toyoki Ue ,  Hidenori Kayama ,  Osamu Kato ,  Kazuyuki Miya ,  Mitsuru Uesugi ,  Takashi Kitade

发明人： Toyoki Ue ,  Hidenori Kayama ,  Osamu Kato ,  Kazuyuki Miya ,  Mitsuru Uesugi ,  Takashi Kitade

IPC分类号： H04B7212

CPC分类号： H04W52/10 ,  H04B7/0608 ,  H04B7/061 ,  H04B7/2618 ,  H04W52/42

摘要： The present invention carries out transmission/reception of broadcast channels using only the last downlink slot of subframes using signals having a TDMA structure according to a CDMA/TDD system, and thus flexibly handles various services and avoids problems of interference in self-operated services in particular. The base station communication apparatus repeatedly transmits information contained in broadcast channels by the number of times corresponding to the time-sharing number and appropriately allots uplink and downlink slots, thus making the most of the features of uplink open-loop transmission power control and base station transmission diversity.

摘要翻译： 本发明仅利用具有根据CDMA / TDD系统的具有TDMA结构的信号的子帧的最后一个下行链路时隙进行广播信道的发送/接收，从而灵活地处理各种业务，并避免自身业务中的干扰问题 特定。 基站通信装置将包含在广播信道中的信息重复发送到与分时号相对应的次数，并适当地分配上行链路和下行链路时隙，从而充分利用上行链路开环发射功率控制和基站的特征 传输多样性。

公开(公告)号：US08711804B2

公开(公告)日：2014-04-29

申请号：US11816166

申请日：2006-01-19

申请人： Atsushi Sumasu ,  Hidenori Kayama ,  Hiroki Haga ,  Masayuki Hoshino ,  Katsuyoshi Naka ,  Junya Yamazaki ,  Ryohei Kimura

发明人： Atsushi Sumasu ,  Hidenori Kayama ,  Hiroki Haga ,  Masayuki Hoshino ,  Katsuyoshi Naka ,  Junya Yamazaki ,  Ryohei Kimura

IPC分类号： H04W36/02

CPC分类号： H04L1/1887 ,  H04W36/02

摘要： A base station, a mobile station and a retransmission control method for enabling communication to be more efficiently performed. In a communication system comprising a base station (100) and a mobile station (200), a time period required for the retransmission of a transport packet to complete is determined, and a retransmission control is performed, based on the required time period, to change the order of executing the retransmission of the transport packet and a handover. In this way, when it is estimated that the retransmission will complete soon, the retransmission is caused to complete in a handover source system, thereby avoiding waste of communication resources used in the preceding transmission and retransmission processes. When it is estimated that the retransmission will continue for a while, the communication resources used in the preceding transmission and retransmission processes are wasted, but a more appropriate MCS can be assigned, in a handover destination system, so as to perform a retransmission, thereby enabling communication to be efficiently performed.

摘要翻译： 基站，移动站和重发控制方法，能够更有效地进行通信。 在包括基站（100）和移动站（200）的通信系统中，确定传输分组完成重传所需的时间段，并根据所需时间进行重发控制， 改变执行传输分组的重传的顺序和切换。 以这种方式，当估计重传将很快完成时，在切换源系统中重新发送完成，从而避免浪费在前面的传输和重传过程中使用的通信资源。 当估计重传将持续一段时间时，在先前的传输和重传过程中使用的通信资源被浪费，但是在切换目的地系统中可以分配更适合的MCS以便执行重传，由此 使得能够有效地执行通信。

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。