公开(公告)号：US09730084B2

公开(公告)日：2017-08-08

申请号：US13579059

申请日：2011-01-25

申请人： Ryo Sawai

发明人： Ryo Sawai

IPC分类号： H04B5/00 ,  H04W24/02 ,  H04W84/10 ,  H04W88/08 ,  H04W16/32 ,  H04W84/04

CPC分类号： H04W24/02 ,  H04W16/32 ,  H04W84/045 ,  H04W84/047 ,  H04W84/105 ,  H04W88/08

摘要： Provided is a communication control method for use in a small-or-medium-scale base station including the steps of: receiving a radio signal transmitted from a communication terminal or a large-scale base station; acquiring information of the communication terminal or the large-scale base station by analyzing the radio signal; selecting one operation range among a plurality of types of operation ranges based on the information of the communication terminal or the large-scale base station; and communicating with the communication terminal in accordance with the operation range selected from among the plurality of types of operation ranges.

公开(公告)号：US20150230243A1

公开(公告)日：2015-08-13

申请号：US14696941

申请日：2015-04-27

申请人： Ryo Sawai

发明人： Ryo Sawai

IPC分类号： H04W72/04 ,  H04W16/14 ,  H04W24/02

CPC分类号： H04W76/16 ,  H04W8/22 ,  H04W16/14 ,  H04W24/02 ,  H04W48/08 ,  H04W48/16 ,  H04W64/00 ,  H04W72/04 ,  H04W72/0433 ,  H04W72/0453 ,  H04W88/12

摘要： Provided is a communication control device controlling communication of multiple secondary usage nodes providing second communication services using a part of a frequency band assigned to a first communication service, including a communication unit receiving service area information for estimating service areas of the second communication services provided by the secondary usage nodes and access technique information indicating radio access techniques usable by the secondary usage nodes, a storage unit storing information on the service area and access technique received by the communication unit, an estimation unit estimating service areas of multiple second communication services, and a control unit notifying a secondary usage node providing one of the multiple second communication services of a radio access technique or a channel recommended to the at least one second communication service on the basis of a location relationship between the service areas estimated by the estimation unit and the access technique information.

摘要翻译： 提供一种通信控制装置，其控制使用分配给第一通信服务的频带的一部分来提供第二通信服务的多个次要使用节点的通信，所述通信控制装置包括：通信单元，接收用于估计由第二通信服务提供的第二通信服务的服务区域 第二使用节点和指示由次要使用节点可用的无线电接入技术的接入技术信息，存储关于服务区域的信息和由通信单元接收的接入技术的存储单元，估计多个第二通信服务的服务区域的估计单元，以及 控制单元，根据估计的服务区域之间的位置关系通知提供无线接入技术的多个第二通信业务之一或推荐给所述至少一个第二通信业务的信道的二次使用节点 单元和访问技术信息。

公开(公告)号：US09078243B2

公开(公告)日：2015-07-07

申请号：US13807898

申请日：2011-06-15

申请人： Ryo Sawai

发明人： Ryo Sawai

IPC分类号： H04W72/04 ,  H04W16/14 ,  H04W8/22 ,  H04W48/08 ,  H04W48/16 ,  H04W64/00

CPC分类号： H04W76/16 ,  H04W8/22 ,  H04W16/14 ,  H04W24/02 ,  H04W48/08 ,  H04W48/16 ,  H04W64/00 ,  H04W72/04 ,  H04W72/0433 ,  H04W72/0453 ,  H04W88/12

摘要： Provided is a communication control device controlling communication of multiple secondary usage nodes providing second communication services using a part of a frequency band assigned to a first communication service, including a communication unit receiving service area information for estimating service areas of the second communication services provided by the secondary usage nodes and access technique information indicating radio access techniques usable by the secondary usage nodes, a storage unit storing information on the service area and access technique received by the communication unit, an estimation unit estimating service areas of multiple second communication services, and a control unit notifying a secondary usage node providing one of the multiple second communication services of a radio access technique or a channel recommended to the at least one second communication service on the basis of a location relationship between the service areas estimated by the estimation unit and the access technique information.

摘要翻译： 提供一种通信控制装置，其控制使用分配给第一通信服务的频带的一部分来提供第二通信服务的多个次要使用节点的通信，所述通信控制装置包括：通信单元，接收用于估计由第二通信服务提供的第二通信服务的服务区域 第二使用节点和指示由次要使用节点可用的无线电接入技术的接入技术信息，存储关于服务区域的信息和由通信单元接收的接入技术的存储单元，估计多个第二通信服务的服务区域的估计单元，以及 控制单元，根据估计的服务区域之间的位置关系通知提供无线接入技术的多个第二通信业务之一或推荐给所述至少一个第二通信业务的信道的二次使用节点 单元和访问技术信息。

公开(公告)号：US09060367B2

公开(公告)日：2015-06-16

申请号：US13983324

申请日：2012-03-07

申请人： Ryo Sawai

发明人： Ryo Sawai

IPC分类号： H04W72/04 ,  H04W28/08 ,  H04W16/14 ,  H04W28/04 ,  H04W28/18 ,  H04W64/00

CPC分类号： H04W72/0453 ,  H04W16/14 ,  H04W28/08 ,  H04W28/18 ,  H04W52/243 ,  H04W64/006 ,  H04W72/082

摘要： There is provided a communication control apparatus including a parameter acquisition unit that acquires parameters to calculate coverage of secondary systems from a secondary usage node operating the secondary systems on a frequency channel allocated to a primary system, a calculation unit that calculates the coverage of the secondary systems using the parameters acquired by the parameter acquisition unit, and an interference control unit that notifies a detection node that detects neighboring secondary systems of the secondary systems, of coverage information representing the coverage of the secondary systems calculated by the calculation unit.

摘要翻译： 提供了一种通信控制装置，包括参数获取单元，该参数获取单元从分配给主系统的频率信道上获取从辅助系统的次要使用节点计算二次系统的覆盖范围的参数;计算单元，其计算二次 使用由参数获取单元获取的参数的系统;以及干扰控制单元，其向检测节点通知检测到次级系统的相邻二级系统的覆盖信息，所述覆盖信息表示由所述计算单元计算的所述辅助系统的覆盖范围。

公开(公告)号：US08897260B2

公开(公告)日：2014-11-25

申请号：US13503037

申请日：2010-10-21

申请人： Hiroaki Takano ,  Yuichi Morioka ,  Ryo Sawai

发明人： Hiroaki Takano ,  Yuichi Morioka ,  Ryo Sawai

IPC分类号： H04W4/00 ,  H04W36/00 ,  H04W36/28

CPC分类号： H04W36/0088 ,  H04W36/08 ,  H04W36/28 ,  H04W36/30 ,  H04W36/38 ,  H04W88/08

摘要： A base station includes a radio communication unit that establishes communication with a mobile communication terminal using a plurality of component carriers. The base station further includes a determination unit that determines a handover factor. The base station also includes a control unit allocates to the mobile communication terminal a measurement time interval for at least one component carrier from the plurality of component carriers according to the handover factor. A channel quality of the at least one component carrier of another base station is measured during the measurement time interval.

摘要翻译： 基站包括使用多个分量载波与移动通信终端建立通信的无线电通信单元。 基站还包括确定切换因子的确定单元。 基站还包括控制单元，根据切换因子，从移动通信终端向多个分量载波分配至少一个分量载波的测量时间间隔。 在测量时间间隔期间测量另一基站的至少一个分量载波的信道质量。

公开(公告)号：US08755325B2

公开(公告)日：2014-06-17

申请号：US13496560

申请日：2010-08-03

申请人： Ryo Sawai

发明人： Ryo Sawai

IPC分类号： H04W4/00 ,  H04B7/14 ,  H04W36/00

CPC分类号： H04W16/26 ,  H04B7/15542 ,  H04B7/2606 ,  H04L1/0026 ,  H04L1/06 ,  H04L2001/0097 ,  H04W24/00 ,  H04W28/04 ,  H04W84/047

摘要： Provided is a communication system including a relay device that relays communication between a base station and a communication terminal, and a management server, the management server including a receiving unit that receives from each base station information about a communication terminal belonging to the base station and about the relay device, and a determination unit that determines, on the basis of the information received from each base station by the receiving unit, a relay device that is performing communication interfering with communication in an adjacent cell. When the relay device is determined as a relay device that is performing communication interfering with the communication in the adjacent cell, the relay device determines an interference avoidance control and executes the determined interference avoidance control.

摘要翻译： 提供一种通信系统，包括中继基站和通信终端之间的通信的中继装置和管理服务器，所述管理服务器包括接收单元，所述接收单元从各基站接收关于属于所述基站的通信终端的信息，以及 关于中继装置，以及确定单元，其基于由接收单元从每个基站接收的信息，确定正在进行干扰相邻小区中的通信的通信的中继装置。 当中继装置被确定为进行干扰相邻小区中的通信的通信的中继装置时，中继装置确定干扰避免控制并执行所确定的干扰避免控制。

公开(公告)号：USRE44320E1

公开(公告)日：2013-06-25

申请号：US13326024

申请日：2011-12-14

申请人： Ryo Sawai

发明人： Ryo Sawai

IPC分类号： H04L1/02 ,  H04L7/00 ,  H04B7/00

CPC分类号： H04L1/0003 ,  H04L1/0002 ,  H04L1/0017 ,  H04L1/0687

摘要： In order to transmit a large amount of data in series at a time with a MIMO communication scheme while avoiding deterioration of decoding characteristics due to change over time by a channel matrix, a wireless communication system uses an open-loop type and a closed-loop type of MIMO communication modes in combination and switches to the open-loop MIMO communication mode in response to the information that the amount of data to be transmitted at a time has exceeded a predetermined amount of bits or a predetermined transmission time during data transmission under the closed-loop MIMO communication mode. By discontinuing useless closed-loop MIMO communication and switching to the open-loop MIMO communication mode that is better than Zero-forcing, the decoding characteristics are prevented from simply becoming deteriorated.

公开(公告)号：US08379763B2

公开(公告)日：2013-02-19

申请号：US12565336

申请日：2009-09-23

申请人： Ryo Sawai

发明人： Ryo Sawai

IPC分类号： H04L27/00 ,  H04L27/28

CPC分类号： H04L27/2675 ,  H04L25/0204 ,  H04L25/0226 ,  H04L25/0236 ,  H04L27/2657

摘要： A wireless communication device includes: a channel matrix estimating unit estimating a channel matrix including channel response elements between antennas; a phase error estimating unit estimating a phase error in a received signal on the basis of a decoding result of encoded and transmitted information symbols of a preamble of a received packet; and a waveform equalizing unit equalizing a waveform of data symbols of the received packet using the channel matrix. Original channel response elements are derived by removing an error of an estimated channel value due to the phase error estimated by the phase error estimating unit from the channel response elements of the channel matrix supplied from the channel matrix estimating unit, and the waveform equalizing unit equalizes the waveform of the data symbols using the channel matrix including the original channel response elements.

摘要翻译： 无线通信装置包括：信道矩阵估计单元，估计包括天线之间的信道响应元素的信道矩阵; 相位误差估计单元，基于接收到的分组的前导码的编码和发送的信息符号的解码结果来估计接收信号中的相位误差; 以及波形均衡单元，使用信道矩阵对接收到的分组的数据符号的波形进行均衡。 通过从由信道矩阵估计单元提供的信道矩阵的信道响应元素中消除由相位误差估计单元估计的相位误差导致的估计信道值的误差，导出原始信道响应元素，波形均衡单元相等 使用包括原始信道响应元素的信道矩阵的数据符号的波形。

公开(公告)号：US08359530B2

公开(公告)日：2013-01-22

申请号：US12565209

申请日：2009-09-23

申请人： Ryo Sawai ,  Shinichi Kuroda

发明人： Ryo Sawai ,  Shinichi Kuroda

IPC分类号： G06F7/02 ,  H03M13/00

CPC分类号： H04L27/2675 ,  H04L27/2613 ,  H04L27/2655

摘要： A wireless communication apparatus that includes a first format detecting unit detecting a format by executing signal processing on a preamble of a received packet before decoding, an estimating unit using the preamble to carry out multiple types of estimations, and a decoding unit decoding the received packet in accordance with the detected format based on the estimations. The apparatus further includes a second format detecting unit detecting the format of the received packet based on decoded control information in the preamble of the received packet, an error detection determination unit, when the format detected by the first format detecting unit differs from the format detected by the second format detecting unit, determining that the format detected by the first format detecting unit is an error, and a control unit controlling operations of the estimating unit and the decoding unit based on a determined result.

摘要翻译： 一种无线通信装置，包括第一格式检测单元，其通过对解码之前的接收分组的前导码执行信号处理来检测格式，使用所述前同步码执行多种类型的估计的估计单元，以及对接收到的分组进行解码的解码单元 根据检测到的格式，基于估计。 该装置还包括：第二格式检测单元，基于接收到的分组的前导码中的解码控制信息，检测接收到的分组的格式;错误检测确定单元，当由第一格式检测单元检测到的格式与检测到的格式不同时 通过第二格式检测单元确定由第一格式检测单元检测到的格式是错误，以及控制单元，基于确定的结果来控制估计单元和解码单元的操作。

公开(公告)号：US20120322388A1

公开(公告)日：2012-12-20

申请号：US13580989

申请日：2011-02-21

申请人： Ryo Sawai

发明人： Ryo Sawai

IPC分类号： H04B17/00

CPC分类号： H04W16/28 ,  H04B7/0617 ,  H04B7/086 ,  H04W52/244 ,  H04W52/42 ,  H04W72/1215 ,  H04W72/1231

摘要： Provided is a communication control method including: determining whether or not reception quality of a second reception device satisfies a predetermined reference in a communication system including a first transmission device, a first reception device, a second transmission device secondarily using a frequency having been assigned to the first transmission device, and the second reception device; and, when it is determined that the reception quality of the second reception device does not satisfy the predetermined reference, additionally performing reception beam steering by the first reception device, beam steering by the first transmission device, reception beam steering by the second reception device, or transmission beam steering by the second transmission device in a predetermined order.

摘要翻译： 提供一种通信控制方法，包括：在包括第一传输设备，第一接收设备，第二传输设备的通信系统中，确定第二接收设备的接收质量是否满足预定的参考，其次要地使用被分配给 第一发送装置和第二接收装置; 并且当确定所述第二接收装置的接收质量不满足所述预定参考时，另外执行由所述第一接收装置进行的接收波束转向，由所述第一发送装置进行的波束转向，由所述第二接收装置进行的接收波束的转向， 或由第二传输装置以预定顺序进行的传输波束转向。