公开(公告)号：US08446812B2

公开(公告)日：2013-05-21

申请号：US13019493

申请日：2011-02-02

申请人： Seigo Nakao ,  Yasuhiro Tanaka ,  Nobuo Higashida

发明人： Seigo Nakao ,  Yasuhiro Tanaka ,  Nobuo Higashida

IPC分类号： H04J11/00 ,  H04W4/00

CPC分类号： H04L5/1438 ,  H04L1/0006 ,  H04L1/06 ,  H04L27/2608

摘要： A storage unit stores a preamble signal defined in a legacy system and a preamble signal defined in a MIMO system. A monitoring unit in a transmitting apparatus monitors the existence of any communication apparatus which is not compatible with the MIMO system but accepts the legacy system. A channel characteristics acquiring unit derives the characteristics of a radio channel between the transmitting apparatus and a receiving apparatus. A selector selects a packet format based on a monitoring result obtained by the monitoring unit. The selector also selects where to place LTS, based on the characteristics of wireless channel derived by the channel characteristics acquiring unit.

摘要翻译： 存储单元存储在传统系统中定义的前导信号和在MIMO系统中定义的前导信号。 发送装置中的监视单元监视与MIMO系统不兼容但是接受传统系统的任何通信装置的存在。 信道特征获取单元导出发送装置和接收装置之间的无线电信道的特性。 选择器基于由监视单元获得的监视结果来选择分组格式。 基于由信道特征获取单元导出的无线信道的特性，选择器还选择放置LTS的位置。

公开(公告)号：US08385255B2

公开(公告)日：2013-02-26

申请号：US11523023

申请日：2006-09-19

申请人： Yasuhiro Tanaka ,  Seigo Nakao

发明人： Yasuhiro Tanaka ,  Seigo Nakao

IPC分类号： H04B7/212

CPC分类号： H04B7/061 ,  H04B7/0671 ,  H04L1/0002 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0028 ,  H04L27/2601 ,  H04L27/2608 ,  H04L27/2613

摘要： Using as a reference a known signal assigned to one of a plurality of streams that constitute a packet signal, a control unit applies a cyclic timing shift to known signals assigned to the other streams so as to produce packet signals which are to be transmitted finally. While varying the amount of timing shift, the control unit produces a plurality of packet signals and appends an identification number, with which to uniquely identify each of the plurality of produced packet signals, to each of the packet signals. A baseband processing unit and the like transmit, as a transmission rate inquiry signal, a packet signal constituted by a plurality of streams where the amounts of timing shift are made to differ, and receive a response signal to which the same identification number is appended for the inquiry signal.

摘要翻译： 使用分配给构成分组信号的多个流中的一个的已知信号作为参考，控制单元对分配给其它流的已知信号应用循环定时偏移，以产生最终发送的分组信号。 在改变定时偏移量的同时，控制单元产生多个分组信号，并且附加一个标识号，用于将每个分组信号唯一地标识出多个产生的分组信号中的每一个信号。 基带处理单元等作为传输速率查询信号发送由定时移位量不同的多个流构成的分组信号，并接收与其相同的识别号码的响应信号， 查询信号。

公开(公告)号：US08054739B2

公开(公告)日：2011-11-08

申请号：US11167577

申请日：2005-06-28

申请人： Seigo Nakao ,  Yasuhiro Tanaka ,  Nobuo Higashida

发明人： Seigo Nakao ,  Yasuhiro Tanaka ,  Nobuo Higashida

IPC分类号： H04J3/16 ,  H04J11/00 ,  H04L12/413 ,  H04W4/00

CPC分类号： H04L5/1438 ,  H04L1/0006 ,  H04L1/06 ,  H04L27/2608

摘要： A storage unit stores a preamble signal defined in a legacy system and a preamble signal defined in a MIMO system. A monitoring unit in a transmitting apparatus monitors the existence of any communication apparatus which is not compatible with the MIMO system but accepts the legacy system. A channel characteristics acquiring unit derives the characteristics of a radio channel between the transmitting apparatus and a receiving apparatus. A selector selects a packet format based on a monitoring result obtained by the monitoring unit. The selector also selects where to place LTS, based on the characteristics of wireless channel derived by the channel characteristics acquiring unit.

摘要翻译： 存储单元存储在传统系统中定义的前导信号和在MIMO系统中定义的前导信号。 发送装置中的监视单元监视与MIMO系统不兼容但是接受传统系统的任何通信装置的存在。 信道特征获取单元导出发送装置和接收装置之间的无线电信道的特性。 选择器基于由监视单元获得的监视结果来选择分组格式。 基于由信道特征获取单元导出的无线信道的特性，选择器还选择放置LTS的位置。

公开(公告)号：US07907507B2

公开(公告)日：2011-03-15

申请号：US11167577

申请日：2005-06-28

申请人： Seigo Nakao ,  Yasuhiro Tanaka ,  Nobuo Higashida

发明人： Seigo Nakao ,  Yasuhiro Tanaka ,  Nobuo Higashida

IPC分类号： H04J3/16 ,  H04J11/00 ,  H04L12/413 ,  H04W4/00

摘要： A storage unit stores a preamble signal defined in a legacy system and a preamble signal defined in a MIMO system. A monitoring unit in a transmitting apparatus monitors the existence of any communication apparatus which is not compatible with the MIMO system but accepts the legacy system. A channel characteristics acquiring unit derives the characteristics of a radio channel between the transmitting apparatus and a receiving apparatus. A selector selects a packet format based on a monitoring result obtained by the monitoring unit. The selector also selects where to place LTS, based on the characteristics of wireless channel derived by the channel characteristics acquiring unit.

公开(公告)号：US07904116B2

公开(公告)日：2011-03-08

申请号：US11353140

申请日：2006-02-14

申请人： Yasuhiro Tanaka ,  Seigo Nakao

发明人： Yasuhiro Tanaka ,  Seigo Nakao

IPC分类号： H04M1/00 ,  H04B1/38

CPC分类号： H04B17/21

摘要： An examining unit examines the radio wave environments on at least one of a plurality of frequency channels usable in communications. Based on a result of examination by the examining unit, a selector selects a frequency channel to be used for communications. While using the channel selected by the selector, an execution unit transmits signals from a plurality of antennas to a terminal apparatus and performs calibration on the plurality of antennas by receiving signals from the terminal apparatus via the plurality of antennas.

摘要翻译： 检查单元检查可用于通信的多个频率信道中的至少一个上的无线电波环境。 基于检查单元的检查结果，选择器选择要用于通信的频道。 在使用由选择器选择的频道的同时，执行单元从多个天线向终端装置发送信号，并通过经由多个天线从终端装置接收信号，对多个天线进行校准。

公开(公告)号：US20060183504A1

公开(公告)日：2006-08-17

申请号：US11353140

申请日：2006-02-14

申请人： Yasuhiro Tanaka ,  Seigo Nakao

发明人： Yasuhiro Tanaka ,  Seigo Nakao

IPC分类号： H04B1/38

CPC分类号： H04B17/21

摘要： An examining unit examines the radio wave environments on at least one of a plurality of frequency channels usable in communications. Based on a result of examination by the examining unit, a selector selects a frequency channel to be used for communications. While using the channel selected by the selector, an execution unit transmits signals from a plurality of antennas to a terminal apparatus and performs calibration on the plurality of antennas by receiving signals from the terminal apparatus via the plurality of antennas.

摘要翻译： 检查单元检查可用于通信的多个频率信道中的至少一个上的无线电波环境。 基于检查单元的检查结果，选择器选择要用于通信的频道。 在使用由选择器选择的频道的同时，执行单元从多个天线向终端装置发送信号，并通过经由多个天线从终端装置接收信号，对多个天线进行校准。

公开(公告)号：US20050163264A1

公开(公告)日：2005-07-28

申请号：US11044086

申请日：2005-01-28

申请人： Seigo Nakao ,  Yasuhiro Tanaka

发明人： Seigo Nakao ,  Yasuhiro Tanaka

IPC分类号： H04J99/00 ,  H04B1/18 ,  H04J11/00 ,  H04L1/06 ,  H04L27/06 ,  H04L27/26

CPC分类号： H04B7/0691 ,  H04L27/2613 ,  H04L27/2656 ,  H04L27/2675

摘要： I delay units and Q delay units continuously delay values of in-phase component and quadrature component of an inputted first baseband received signal. I storage units and Q storage units store each component of a waveform of STS (Short Training Sequence) corresponding to a first transmitting antenna. Multipliers carry out multiplication in correlation processing. An adder adds up multiplication results outputted from the multipliers and then another adder adds up the addition result.

摘要翻译： I延迟单元和Q延迟单元连续地延迟输入的第一基带接收信号的同相分量和正交分量的值。 I存储单元和Q存储单元存储对应于第一发送天线的STS（短训练序列）的波形的每个分量。 乘数在相关处理中进行乘法。 加法器将从乘法器输出的相乘结果相加，然后另一加法器加上相加结果。

公开(公告)号：US20130022159A1

公开(公告)日：2013-01-24

申请号：US13566184

申请日：2012-08-03

申请人： Seigo Nakao ,  Yasuhiro Tanaka ,  Nobuo Higashida

发明人： Seigo Nakao ,  Yasuhiro Tanaka ,  Nobuo Higashida

IPC分类号： H04L27/08

CPC分类号： H04L5/1438 ,  H04B7/0689 ,  H04L1/0006 ,  H04L1/0079 ,  H04L1/06

摘要： A storage unit stores a preamble signal defined in a legacy system and a preamble signal defined in a MIMO system. A monitoring unit in a transmitting apparatus monitors the existence of any communication apparatus which is not compatible with the MIMO system but accepts the legacy system. A channel characteristics acquiring unit derives the characteristics of a radio channel between the transmitting apparatus and a receiving apparatus. A selector selects a packet format based on a monitoring result obtained by the monitoring unit. The selector also selects where to place LTS, based on the characteristics of wireless channel derived by the channel characteristics acquiring unit.

摘要翻译： 存储单元存储在传统系统中定义的前导信号和在MIMO系统中定义的前导信号。 发送装置中的监视单元监视与MIMO系统不兼容但是接受传统系统的任何通信装置的存在。 信道特征获取单元导出发送装置和接收装置之间的无线电信道的特性。 选择器基于由监视单元获得的监视结果来选择分组格式。 基于由信道特征获取单元导出的无线信道的特性，选择器还选择放置LTS的位置。

公开(公告)号：US08265055B2

公开(公告)日：2012-09-11

申请号：US11167585

申请日：2005-06-28

申请人： Seigo Nakao ,  Yasuhiro Tanaka ,  Nobuo Higashida

发明人： Seigo Nakao ,  Yasuhiro Tanaka ,  Nobuo Higashida

IPC分类号： H04J1/00

CPC分类号： H04L5/1438 ,  H04B7/0689 ,  H04L1/0006 ,  H04L1/0079 ,  H04L1/06

摘要： A storage unit stores a preamble signal defined in a legacy system and a preamble signal defined in a MIMO system. A monitoring unit in a transmitting apparatus monitors the existence of any communication apparatus which is not compatible with the MIMO system but accepts the legacy system. A channel characteristics acquiring unit derives the characteristics of a radio channel between the transmitting apparatus and a receiving apparatus. A selector selects a packet format based on a monitoring result obtained by the monitoring unit. The selector also selects where to place LTS, based on the characteristics of wireless channel derived by the channel characteristics acquiring unit.

公开(公告)号：US08064388B2

公开(公告)日：2011-11-22

申请号：US11521484

申请日：2006-09-15

申请人： Yasuhiro Tanaka ,  Seigo Nakao

发明人： Yasuhiro Tanaka ,  Seigo Nakao

IPC分类号： H04W4/00 ,  H04H20/71 ,  H04L12/28 ,  H04J3/26 ,  H04J3/24

CPC分类号： H04W28/06 ,  H04L5/023 ,  H04W72/04 ,  H04W72/1263

摘要： A control unit aggregates packets which are to be sent to one or more terminal apparatuses, and produces aggregated packets. The control unit divides a certain period into a plurality of partial periods, allots each of the plurality of partial periods to any of the plurality of terminal apparatuses and produces a control signal with which to convey an assignment condition to the terminal apparatus. In the case of an aggregated packet where the packets for the plurality of terminals are aggregated, a baseband processing unit and the like transmit the aggregated packet together with the control signal to the plurality of terminal apparatuses. In the case of an aggregated packet where the packets for a single terminal are aggregated, they transmit the aggregated packet to the plurality of terminal apparatuses, without sending the control signal.

摘要翻译： 控制单元聚合要发送到一个或多个终端设备的分组，并产生聚合分组。 控制单元将一定周期划分为多个部分周期，将多个部分周期中的每一个分配给多个终端装置中的任一个，并产生用于向终端装置传送分配条件的控制信号。 在聚合了多个终端的分组的聚合分组的情况下，基带处理单元等将该聚合分组与控制信号一起发送到多个终端装置。 在聚合了单个终端的分组的聚合分组的情况下，它们将聚合分组发送到多个终端装置，而不发送控制信号。