公开(公告)号：US09215026B2

公开(公告)日：2015-12-15

申请号：US13519918

申请日：2011-01-05

申请人： Yoshihisa Kishiyama ,  Kazuaki Takeda ,  Yusuke Ohwatari

发明人： Yoshihisa Kishiyama ,  Kazuaki Takeda ,  Yusuke Ohwatari

IPC分类号： H04J11/00 ,  H04W24/10 ,  H04L5/00 ,  H04L25/02 ,  H04L27/26 ,  H04W28/04 ,  H04W48/08 ,  H04W88/02 ,  H04W88/08

CPC分类号： H04J11/0056 ,  H04J11/005 ,  H04J11/0053 ,  H04L5/0026 ,  H04L5/0028 ,  H04L5/0035 ,  H04L5/0051 ,  H04L5/0057 ,  H04L5/0073 ,  H04L5/0092 ,  H04L25/0226 ,  H04L27/2601 ,  H04W24/10 ,  H04W28/04 ,  H04W48/08 ,  H04W88/02 ,  H04W88/08

摘要： To provide a radio base station apparatus, mobile terminal device and wireless communication method for transmitting and receiving downlink channel quality measurement reference signals in consideration of orthogonalization among transmission antennas, orthogonalization among cells, and interference estimation of high accuracy, in a wireless communication method of the invention, a radio base station apparatus generates channel quality measurement reference signals, performs randomization processing on the channel quality measurement reference signals to be mutually non-orthogonal among at least a part of cells, and orthogonalizes the channel quality measurement reference signals among transmission antennas to transmit to a mobile terminal device together with control information, and the mobile terminal device receives a downlink signal including the control information and the channel quality measurement reference signal, extracts the channel quality measurement reference signal using the control information, and measures channel quality using the channel quality measurement reference signal.

摘要翻译： 为了提供一种无线基站装置，移动终端装置及无线通信方法，用于在发送天线之间的正交化，小区正交化和高精度的干扰估计之间发送和接收下行链路信道质量测量参考信号，以无线通信方式 本发明中，无线基站装置生成信道质量测量参考信号，对小区的至少一部分之间相互非正交的信道质量测量参考信号进行随机化处理，并使发送天线中的信道质量测量参考信号正交化 与控制信息一起发送到移动终端设备，并且移动终端设备接收包括控制信息和信道质量测量参考信号的下行链路信号，提取信道质量测量参考信号usin g控制信息，并使用信道质量测量参考信号测量信道质量。

公开(公告)号：US09167448B2

公开(公告)日：2015-10-20

申请号：US13883300

申请日：2011-11-07

申请人： Satoshi Nagata ,  Tetsushi Abe ,  Yusuke Ohwatari ,  Nobuhiko Miki

发明人： Satoshi Nagata ,  Tetsushi Abe ,  Yusuke Ohwatari ,  Nobuhiko Miki

IPC分类号： H04W28/04 ,  H04L1/00 ,  H04W84/04 ,  H04W24/02 ,  H04L1/18 ,  H04W24/10

CPC分类号： H04W24/02 ,  H04L1/0026 ,  H04L1/007 ,  H04L1/0077 ,  H04L1/1812 ,  H04W24/10 ,  H04W28/04 ,  H04W84/045

摘要： The present invention provides a mobile terminal apparatus, a base station apparatus, and a communication control method, which allow control suitable for interference reduction in a layered network such as HetNet, and which support a next-generation mobile communication system. A mobile terminal apparatus has a receiving section (103) that receives radio frames of a lower cell, in which a protected subframe, the transmission of which by a higher cell is suppressed, and a non-protected subframe, the transmission of which by the higher cell is not suppressed, coexist, a measurement section (112) that measures reception quality from reference signals multiplexed individually on the protected subframe and the non-protected subframe, a feedback information reduction section (114) that calculates a difference value between the reception quality of the protected subframe and the reception quality of the non-protected subframe, and a transmission section (103) that reports reception quality information of the protected subframe, and the difference value calculated in the feedback information reduction section (114), to a base station apparatus (20B).

摘要翻译： 本发明提供一种移动终端装置，基站装置和通信控制方法，其允许适用于诸如HetNet的分层网络中的干扰减少的控制，并且其支持下一代移动通信系统。 一种移动终端装置具有：接收部（103），其接收下位单元的无线帧，其中受保护的子帧（其被较高小区的传输被抑制）和非保护子帧， 较高的单元不被抑制，并存，用于根据在保护的子帧和非保护子帧上单独复用的参考信号来测量接收质量的测量部分（112），反馈信息减少部分（114），其计算接收之间的差值 保护子帧的质量和非保护子帧的接收质量，以及报告保护子帧的接收质量信息的发送部（103）以及反馈信息减少部（114）中计算出的差值。 基站装置（20B）。

公开(公告)号：US08731089B2

公开(公告)日：2014-05-20

申请号：US13020282

申请日：2011-02-03

申请人： Yusuke Ohwatari ,  Anass Benjebbour ,  Yukihiko Okumura

发明人： Yusuke Ohwatari ,  Anass Benjebbour ,  Yukihiko Okumura

IPC分类号： H04B1/00 ,  H04B15/00 ,  H04B7/02

CPC分类号： H04L5/0048 ,  H04L5/0035 ,  H04L5/0044 ,  H04L5/0058 ,  H04L5/0073 ,  H04L25/0224

摘要： The present invention provides a radio communication system which includes a plurality of radio base station apparatuses that transmit reference signals orthogonal to each other among a plurality of transmitting antennas and a mobile terminal apparatus that performs channel estimation based on the reference signals transmitted from the plurality of radio base station apparatuses, sets priority among a plurality of neighboring radio base station apparatuses and introduces a bias in the number of reference signals that can be allocated to each radio base station apparatus according to the priority from the radio resources shared among the plurality of neighboring radio base station apparatuses.

摘要翻译： 本发明提供一种无线通信系统，其包括：多个发送天线之间发送彼此正交的参考信号的多个无线基站装置;以及基于从多个发送天线发送的基准信号进行信道估计的移动终端装置 无线基站装置在多个相邻的无线基站装置之间设定优先级，从多个相邻的无线基站装置中共享的无线资源引入根据优先级分配给每个无线基站装置的参考信号的个数的偏移 无线基站装置。

公开(公告)号：US20130182648A1

公开(公告)日：2013-07-18

申请号：US13817358

申请日：2011-08-16

申请人： Tetsushi Abe ,  Nobuhiko Miki ,  Yusuke Ohwatari

发明人： Tetsushi Abe ,  Nobuhiko Miki ,  Yusuke Ohwatari

IPC分类号： H04W24/02

CPC分类号： H04W24/02 ,  H04B7/024 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0035 ,  H04L5/0048 ,  H04L5/0057 ,  H04L5/0073 ,  H04L5/0094 ,  H04W72/042

摘要： To provide a signaling method for enabling position information of muting resources to be signaled with a simplified configuration, base station apparatus and mobile terminal apparatus, the signaling method is characterized by having the steps of setting blank resources for a CSI-RS (Channel State Information-Reference Signal) that is a reference signal for downlink channel estimation, and transmitting a bitmap indicative of a position of the blank resources to a mobile terminal apparatus.

摘要翻译： 为了提供用简化配置，基站装置和移动终端装置发信号通知静音资源的位置信息的信令方法，该信令方法的特征在于具有以下步骤：为CSI-RS设置空白资源（信道状态信息 参考信号），其是用于下行链路信道估计的参考信号，并且将指示空白资源的位置的位图发送到移动终端设备。

公开(公告)号：US08326245B2

公开(公告)日：2012-12-04

申请号：US12431894

申请日：2009-04-29

申请人： Yusuke Ohwatari ,  Anass Benjebbour ,  Tomoyuki Ooya ,  Junichiro Hagiwara

发明人： Yusuke Ohwatari ,  Anass Benjebbour ,  Tomoyuki Ooya ,  Junichiro Hagiwara

IPC分类号： H04B1/04

摘要： A disclosed radio communication apparatus transmits a radio signal to multiple users via multiple transmit antenna groups at appropriate transmit power levels, each of the transmit antenna groups including one or more transmit antennas, the transmit antenna groups having respective transmit power constraints. The apparatus includes a precoding unit configured to perform precoding on signals modulated for individual users and generate transmit weights, an optimum transmit power calculation unit configured to receive the transmit weights from the precoding unit and use components of the transmit weights and respective transmit power limit values for the transmit antenna groups to calculate an initial value for a transmit power optimization problem for calculation of the appropriate transmit power levels for the users, and a transmission unit configured to transmit radio signals at the calculated transmit power levels.

公开(公告)号：US20110188540A1

公开(公告)日：2011-08-04

申请号：US13020282

申请日：2011-02-03

申请人： Yusuke Ohwatari ,  Anass Benjebbour ,  Yukihiko Okumura

发明人： Yusuke Ohwatari ,  Anass Benjebbour ,  Yukihiko Okumura

IPC分类号： H04B1/00 ,  H04B15/00

CPC分类号： H04L5/0048 ,  H04L5/0035 ,  H04L5/0044 ,  H04L5/0058 ,  H04L5/0073 ,  H04L25/0224

摘要： The present invention provides a radio communication system which includes a plurality of radio base station apparatuses that transmit reference signals orthogonal to each other among a plurality of transmitting antennas and a mobile terminal apparatus that performs channel estimation based on the reference signals transmitted from the plurality of radio base station apparatuses, sets priority among a plurality of neighboring radio base station apparatuses and introduces a bias in the number of reference signals that can be allocated to each radio base station apparatus according to the priority from the radio resources shared among the plurality of neighboring radio base station apparatuses.

摘要翻译： 本发明提供一种无线通信系统，其包括：多个发送天线之间发送彼此正交的参考信号的多个无线基站装置;以及基于从多个发送天线发送的基准信号进行信道估计的移动终端装置 无线基站装置在多个相邻的无线基站装置之间设定优先级，从多个相邻的无线基站装置中共享的无线资源引入根据优先级分配给每个无线基站装置的参考信号的个数的偏移 无线基站装置。

公开(公告)号：US20100272211A1

公开(公告)日：2010-10-28

申请号：US12763485

申请日：2010-04-20

申请人： Yusuke OHWATARI ,  Anass Benjebbour

发明人： Yusuke OHWATARI ,  Anass Benjebbour

IPC分类号： H04B7/02 ,  H04L27/00

CPC分类号： H04B7/0426 ,  H04B7/0465 ,  H04B7/0691 ,  H04W52/367 ,  H04W52/42 ,  H04W52/50

摘要： A disclosed radio communication method includes precoding modulated information signal sequences to calculate transmit weight information, setting initial transmit power based on prior information including the calculated transmit weight information, generating an objective function of a user channel capacity for a constrained optimization problem based on the transmit weight information and the initial transmit power, generating a new objective function by adding a barrier function to the objective function, using an initial temporary barrier parameter to initiate iteration of an optimization operation for the new objective function, setting an initial barrier parameter based on comparison between the current and previous outputs, calculating transmit power to optimize the new objective function in accordance with an interior point method based on the initial transmit power and the initial barrier parameter and allocating the calculated transmit power to the respective transmit antennas.

摘要翻译： 所公开的无线电通信方法包括预编码调制信息信号序列以计算发送权重信息，基于包括所计算的发送权重信息的先前信息来设置初始发送功率，基于所述发送权重信息生成约束优化问题的用户信道容量的目标函数 权重信息和初始发送功率，通过向目标函数添加屏障功能来生成新的目标函数，使用初始临时屏障参数来初始化新目标函数的优化操作的迭代，基于比较设置初始屏障参数 在当前和先前输出之间，根据基于初始发射功率和初始屏障参数的内点方法计算发射功率以优化新的目标函数，并将计算的发射功率分配给各个发射天线 如。

公开(公告)号：US09313774B2

公开(公告)日：2016-04-12

申请号：US13816749

申请日：2011-08-16

申请人： Tetsushi Abe ,  Nobuhiko Miki ,  Yusuke Ohwatari

发明人： Tetsushi Abe ,  Nobuhiko Miki ,  Yusuke Ohwatari

IPC分类号： H04W4/00 ,  H04W72/04 ,  H04L5/00

CPC分类号： H04W72/04 ,  H04L5/0048 ,  H04L5/0098

摘要： To signal CSI-RS location indexes indicative of CSI-RS location positions in a resource block with high efficiency, a signaling method of CSI-RS is characterized by having the steps of locating a CSI-RS that is a reference signal for downlink channel estimation in resources for CSI-RS reserved to transmit the CSI-RS, generating a CSI-RS location index indicative of a location position of the CSI-RS located in the resources for CSI-RS, in the CSI-RS location index an index pattern varies corresponding to the number of CSI-RS ports so that an index pattern of the relatively low number of CSI-RS ports is a subset of an index pattern of the relatively high number of CSI-RS ports, and transmitting the generated CSI-RS location index to a mobile terminal apparatus.

摘要翻译： 为了以高效率向资源块中发送指示CSI-RS位置位置的CSI-RS位置索引，CSI-RS的信令方法的特征在于具有以下步骤：定位作为下行链路信道估计的参考信号的CSI-RS 在用于发送CSI-RS的CSI-RS的资源中，在CSI-RS位置索引中生成指示位于CSI-RS资源中的CSI-RS的位置位置的CSI-RS位置索引，索引模式 相应于CSI-RS端口的数量变化，使得相对较少数量的CSI-RS端口的索引模式是相对较多数量的CSI-RS端口的索引模式的子集，并且发送所生成的CSI-RS 位置索引给移动终端设备。

公开(公告)号：US09179349B2

公开(公告)日：2015-11-03

申请号：US13883308

申请日：2011-11-07

申请人： Satoshi Nagata ,  Tetsushi Abe ,  Yusuke Ohwatari ,  Nobuhiko Miki

发明人： Satoshi Nagata ,  Tetsushi Abe ,  Yusuke Ohwatari ,  Nobuhiko Miki

IPC分类号： H04W72/08 ,  H04W24/10

CPC分类号： H04W24/10 ,  H04W72/085

摘要： The present invention provides a mobile terminal apparatus, a base station apparatus, and a communication control method, which allow control suitable for interference reduction in a layered network such as HetNet, and which support a next-generation mobile communication system. A mobile terminal apparatus has a receiving section (103) that receives radio frames of a pico cell, in which a protected subframe, the transmission of which by a macro cell is suppressed, and a non-protected subframe, the transmission of which by the macro cell is not suppressed, coexist, a measurement section (112) that measures reception quality from the reference signals multiplexed individually on the protected subframe and the non-protected subframe, and a transmission section (103) that notifies two types of reception quality information of the protected subframe and the non-protected subframe, measured in the measurement section (112), to a base station apparatus (20B).

摘要翻译： 本发明提供一种移动终端装置，基站装置和通信控制方法，其允许适用于诸如HetNet的分层网络中的干扰减少的控制，并且其支持下一代移动通信系统。 一种移动终端装置具有：接收部（103），其接收微小区的无线帧，在该无线帧中，由宏小区抑制其发送的受保护子帧，以及未受保护的子帧 宏小区不被抑制，共存，从被保护子帧和非保护子帧单独复用的参考信号测量接收质量的测量部分（112）和通知两种接收质量信息的发送部分（103） 在所述测量部分（112）中测量的所述被保护子帧和所述非保护子帧被发送到基站装置（20B）。

公开(公告)号：US20130294271A1

公开(公告)日：2013-11-07

申请号：US13883308

申请日：2011-11-07

申请人： Satoshi Nagata ,  Tetsushi Abe ,  Yusuke Ohwatari ,  Nobuhiko Miki

发明人： Satoshi Nagata ,  Tetsushi Abe ,  Yusuke Ohwatari ,  Nobuhiko Miki

IPC分类号： H04W24/10

CPC分类号： H04W24/10 ,  H04W72/085

摘要： The present invention provides a mobile terminal apparatus, a base station apparatus, and a communication control method, which allow control suitable for interference reduction in a layered network such as HetNet, and which support a next-generation mobile communication system. A mobile terminal apparatus has a receiving section (103) that receives radio frames of a pico cell, in which a protected subframe, the transmission of which by a macro cell is suppressed, and a non-protected subframe, the transmission of which by the macro cell is not suppressed, coexist, a measurement section (112) that measures reception quality from the reference signals multiplexed individually on the protected subframe and the non-protected subframe, and a transmission section (103) that notifies two types of reception quality information of the protected subframe and the non-protected subframe, measured in the measurement section (112), to a base station apparatus (20B).

摘要翻译： 本发明提供一种移动终端装置，基站装置和通信控制方法，其允许适用于诸如HetNet的分层网络中的干扰减少的控制，并且其支持下一代移动通信系统。 一种移动终端装置具有：接收部（103），其接收微小区的无线帧，在该无线帧中，由宏小区抑制其发送的受保护子帧，以及未受保护的子帧 宏小区不被抑制，共存，从被保护子帧和非保护子帧单独复用的参考信号测量接收质量的测量部分（112）和通知两种接收质量信息的发送部分（103） 在所述测量部分（112）中测量的所述被保护子帧和所述非保护子帧被发送到基站装置（20B）。