公开(公告)号：US20130217429A1

公开(公告)日：2013-08-22

申请号：US13880963

申请日：2011-09-16

申请人： Ryota Kimura ,  Ryo Sawai

发明人： Ryota Kimura ,  Ryo Sawai

IPC分类号： H04W52/24

CPC分类号： H04W72/0453 ,  H04W16/14 ,  H04W52/243 ,  H04W52/244 ,  H04W52/367 ,  H04W72/0473 ,  H04W72/082

摘要： Provided is a communication control device including a communication unit configured to make communication with one or more secondary communication nodes operating a secondary system using at least one of a frequency channel allocated to a primary system and a frequency channel adjacent to the frequency channel, a determination unit configured to determine an upper limit number of secondary systems or secondary communication nodes to be allocated with transmission power, and a power allocation unit configured to allocate transmission power to each secondary system or each secondary communication node in each secondary system based on the determined upper limit number and the acceptable interference amount of the primary system.

摘要翻译： 提供一种通信控制装置，其包括通信单元，其被配置为使用分配给主系统的频率信道和与频率信道相邻的频率信道中的至少一个来与运行次系统的一个或多个次要通信节点进行通信， 被配置为确定要被分配有传输功率的次要系统或次要通信节点的上限数量的单元，以及功率分配单元，被配置为基于所确定的上位机向每个辅助系统或每个次要通信节点分配传输功率 限制数量和主要系统的可接受的干扰量。

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：US08391794B2

公开(公告)日：2013-03-05

申请号：US12849210

申请日：2010-08-03

申请人： Ryo Sawai ,  Ryota Kimura

发明人： Ryo Sawai ,  Ryota Kimura

IPC分类号： H04B17/00

CPC分类号： H04W52/16 ,  H04W52/325 ,  H04W52/50

摘要： There is provided a method of controlling communication of a second communication service making secondary usage of a spectrum assigned to a first communication service, with use of a communication device, including the steps of: receiving a radio signal transmitted for the first communication service in a first period on a time axis; determining a parameter value to be used for controlling communication of the second communication service based on the radio signal received in the first period; sensing a radio signal transmitted for the second communication service in a second period subsequent to the first period; and transmitting a beacon for the second communication service based on the parameter value in a third period subsequent to the second period when a radio signal for the second communication service is not detected in the second period.

摘要翻译： 提供了一种控制第二通信服务的通信的方法，其使用通信设备对分配给第一通信服务的频谱进行二次使用，包括以下步骤：接收以第一通信服务发送的无线电信号 时间轴上的第一个时期; 基于在所述第一周期中接收到的无线电信号，确定要用于控制所述第二通信服务的通信的参数值; 在所述第一周期之后的第二周期中感测为所述第二通信服务发送的无线电信号; 以及当在所述第二周期中没有检测到用于所述第二通信服务的无线电信号时，在所述第二周期之后的第三周期中，基于所述参数值，发送所述第二通信服务的信标。

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。

公开(公告)号：US20120309292A1

公开(公告)日：2012-12-06

申请号：US13579059

申请日：2011-01-25

申请人： Ryo Sawai

发明人： Ryo Sawai

IPC分类号： H04W72/00

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.

摘要翻译： 提供一种用于中小型基站的通信控制方法，包括以下步骤：接收从通信终端或大规模基站发送的无线信号; 通过分析无线电信号来获取通信终端或大规模基站的信息; 基于通信终端或大规模基站的信息，在多种类型的操作范围内选择一个操作范围; 以及根据从多种类型的操作范围中选择的操作范围与通信终端进行通信。

公开(公告)号：US20110316744A1

公开(公告)日：2011-12-29

申请号：US13203974

申请日：2010-02-09

申请人： Yuichi Morioka ,  Takushi Kunihiro ,  Kazuyuki Sakoda ,  Ryo Sawai

发明人： Yuichi Morioka ,  Takushi Kunihiro ,  Kazuyuki Sakoda ,  Ryo Sawai

IPC分类号： H04B7/00

CPC分类号： H04W72/046

摘要： By effectively utilizing the beam pattern used at the time of the last communication, a directional link can be efficiently established, thereby reducing overhead. When establishing a link, a communication apparatus 100 transmits a preparation frame by using the last used transmit beam pattern, thereby efficiently establishing a directional link and reducing overhead. Also, when establishing a link, the communication apparatus 100 uses the last used receive beam pattern to receive a preparation frame whose transmission timing is known, thereby efficiently establishing a directional link and reducing overhead.

摘要翻译： 通过有效利用上一次通信时使用的波束图案，可以有效地建立定向链路，从而降低开销。 当建立链路时，通信装置100通过使用最后使用的发送波束模式发送准备帧，从而有效地建立定向链路并减少开销。 此外，当建立链路时，通信装置100使用最后使用的接收波束模式来接收其发送定时已知的准备帧，从而有效地建立定向链路并减少开销。

公开(公告)号：US20110275322A1

公开(公告)日：2011-11-10

申请号：US13144738

申请日：2010-01-12

申请人： Ryo Sawai ,  Ryota Kimura

发明人： Ryo Sawai ,  Ryota Kimura

IPC分类号： H04W4/00

CPC分类号： H04W72/085 ,  H04W16/14

摘要： To start secondary use of a spectrum without causing an adverse effect on a communication service for primary usage, provided is a communication control method including the steps of acquiring data related to a communication environment surrounding a first communication device at the first communication device, determining that a second communication service using a part or whole of a spectrum assigned to a first communication service is available when the acquired data related to the communication environment satisfies a first condition, and permitting usage of the second communication service when the data related to the communication environment satisfies a second condition at the first communication device or a second communication device.

摘要翻译： 为了开始二次使用频谱而不对主要使用的通信服务造成不利影响，提供了一种通信控制方法，包括以下步骤：在第一通信设备处获取与围绕第一通信设备的通信环境有关的数据，确定 当与通信环境相关的获取的数据满足第一条件并且当与通信环境相关的数据允许使用第二通信服务时，使用分配给第一通信服务的频谱的一部分或全部的第二通信服务是可用的 在第一通信设备或第二通信设备处满足第二条件。

公开(公告)号：US20110034204A1

公开(公告)日：2011-02-10

申请号：US12844188

申请日：2010-07-27

申请人： Ryo Sawai ,  Ryota Kimura

发明人： Ryo Sawai ,  Ryota Kimura

IPC分类号： H04B7/00

CPC分类号： H04W52/283 ,  H04W4/02 ,  H04W16/14 ,  H04W52/243 ,  H04W52/247 ,  H04W52/346

摘要： There is provided a communication device including: a communication unit that receives a beacon for a second communication service making secondary usage of a spectrum assigned to a first communication service; and a control unit that controls a transmission power to be used for transmission of a radio signal of the second communication service from the communication unit based on location data included in the beacon and indicating a location of a transmission source node of the beacon and a location of an interfered node interfered by the second communication service.

摘要翻译： 提供了一种通信设备，包括：通信单元，其接收第二通信服务的信标，使得分配给第一通信服务的频谱的二次使用; 以及控制单元，其基于包括在所述信标中的位置数据来控制用于从所述通信单元发送所述第二通信服务的无线电信号的发送功率，并且指示所述信标的发送源节点的位置和位置 被第二通信业务干扰的干扰节点。