公开(公告)号：US07889758B2

公开(公告)日：2011-02-15

申请号：US11209739

申请日：2005-08-24

Applicant: Lei Li ,  Zhisheng Niu ,  Takashi Yano ,  Shiro Tanabe ,  Satoshi Tamaki

Inventor： Lei Li ,  Zhisheng Niu ,  Takashi Yano ,  Shiro Tanabe ,  Satoshi Tamaki

IPC: H04J3/00 ,  H04J11/00

CPC classification number: H04B7/0417 ,  H04B7/0452 ,  H04B7/0626 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0017 ,  H04L1/06 ,  H04L5/0023 ,  H04L5/0037 ,  H04L5/0046 ,  H04L5/0051 ,  H04L5/006 ,  H04L5/0075 ,  H04L5/0094 ,  H04L25/0204 ,  H04L25/0228 ,  H04L27/0008 ,  H04L27/0012 ,  H04W72/044 ,  H04W72/048

Abstract: A subchannel scheduling method in a multi-user MIMO-OFDM environment modifies proportional fairness scheduling specifications and maximizes a system throughput under conditions that a minimum data transmission rate required by a multimedia user be ensured. In a method for allocating subchannels in a wireless network, plural users are subscribed in the wireless network, a base station has NT transmission antennas, a user i has NR reception antennas, a network capacity determined by the NT transmission antennas and K subcarrier groups is divided into K transmission subchannel groups, and a network bandwidth determined by the NT transmission antennas is divided into the K subchannel groups. The base station sequentially allocates channels to the users on the basis of a proportional value of a data transmission rate supported to each user and an average throughput of each user in a predetermined time and a service quality required by each user.

Abstract translation: 在多用户MIMO-OFDM环境中的子信道调度方法修改比例公平调度规范，并在确保多媒体用户所要求的最小数据传输速率的条件下最大化系统吞吐量。 在无线网络中分配子信道的方法中，在无线网络中订阅多个用户，基站具有NT个发送天线，用户i具有NR个接收天线，由NT个发送天线确定的网络容量，K个子载波组为 划分为K个传输子信道组，由NT个发送天线确定的网络带宽分为K个子信道组。 基站根据每个用户支持的数据传输速率的比例值和每个用户在预定时间内的平均吞吐量以及每个用户所需的服务质量，顺序地向用户分配信道。

公开(公告)号：US07801236B2

公开(公告)日：2010-09-21

申请号：US11028938

申请日：2005-01-05

Applicant: Satoshi Tamaki ,  Takashi Yano ,  Toshiyuki Saito ,  Seishi Hanaoka

Inventor： Satoshi Tamaki ,  Takashi Yano ,  Toshiyuki Saito ,  Seishi Hanaoka

IPC: H04B7/02

CPC classification number: H04L1/0009 ,  H04L1/0003 ,  H04L1/0021 ,  H04L5/0046 ,  H04L5/006 ,  H04L27/0008

Abstract: A transmitter station and receiver station have common maximum number of transmission bits per symbol of each subcarrier and information of encoding types to be selected. The transmitter station selects the modulation type from the propagation path quality of each subcarrier, executes encoding with the encoding type corresponding to the number of bits for communication with the selected modulation type, distributes the maximum number of transmission bits per symbol of each subcarrier by dividing the code, and transmits the data through modulation of only the number of bits for communication with the selected modulation type among distributed bits in each subcarrier. The receiver station executes demodulation by selecting the modulation type used for demodulation from the propagation path quality, summarizes the demodulation result with addition of reception of the signal having a zero degree of likeliness for the number of wanted bits, and executes decoding to the result of demodulation.

Abstract translation: 发射机站和接收站具有每个子载波的每个符号的公共最大传输比特数和要选择的编码类型的信息。 发射机站根据每个子载波的传播路径质量选择调制类型，以与用于与选择的调制类型进行通信的比特数对应的编码类型执行编码，通过划分每个子​​载波的每个码元的最大传输比特数 代码，并且通过仅调制每个子载波中的分布位中的与选择的调制类型通信的比特数来发送数据。 接收站通过从传播路径质量中选择用于解调的调制类型来执行解调，通过添加对所需位数的零度可能性的信号的接收来总结解调结果，并执行解码结果 解调。

公开(公告)号：US07769081B2

公开(公告)日：2010-08-03

申请号：US11896082

申请日：2007-08-30

Applicant: Takashi Yano ,  Satoshi Tamaki

Inventor： Takashi Yano ,  Satoshi Tamaki

IPC: H04B17/02 ,  H04Q7/20

CPC classification number: H04W52/243 ,  H04W52/242 ,  H04W52/247 ,  H04W52/50

Abstract: Transmission power relative to a propagation path having a variation in gain is controlled to increase communication channel capacity, and a data rate is controlled in accordance with the variation of the increased communication channel capacity. In order to increase the communication channel capacity, the transmission power is determined so that the sum of noise power (=received noise power/propagation path gain) converted into one at a transmitter and the transmission power becomes constant. As a result, contrary to the background art, the transmission power is controlled to be reduced when the propagation path gain decreases and to be increased when the propagation path gain increases.

Abstract translation: 控制相对于具有增益变化的传播路径的传输功率以增加通信信道容量，并且根据增加的通信信道容量的变化来控制数据速率。 为了增加通信信道容量，确定发送功率，使得在发射机处转换为一个的发送功率和发送功率的噪声功率（=接收噪声功率/传播路径增益）之和变得恒定。 结果，与背景技术相反，当传播路径增益减小时，传输功率被控制为减小，并且当传播路径增益增加时传输功率被增加。

公开(公告)号：US20080144594A1

公开(公告)日：2008-06-19

申请号：US12068681

申请日：2008-02-11

Applicant: Takashi Yano ,  Satoshi Tamaki ,  Seishi Hanaoka ,  Takeshi Kato

Inventor： Takashi Yano ,  Satoshi Tamaki ,  Seishi Hanaoka ,  Takeshi Kato

IPC: H04B7/216

CPC classification number: H04B7/0617 ,  H04B7/0615 ,  H04B7/0669 ,  H04B7/0848 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/005 ,  H04L1/0061 ,  H04L1/0066 ,  H04L1/06 ,  H04L1/16 ,  H04L1/1845 ,  H04L2001/0096 ,  H04W16/28

Abstract: This invention provides a mobile communication system which expanded the operation limitation of the heretofore adopted mobile communication systems and improved the spectrum efficiency greatly. A data transmission method for use in the mobile communication system of the present invention includes means for channel pluralizing by which to expand the Shannon limit and means for interference reduction by which to expand the interference limit. More specifically, a transmitting module comprises M units of modulators and L units of transmitting antennas, generates L units of signals by multiplying M units of modulated signals by a complex matrix consisting of M×L units of elements, and transmits the L units of signals from the L units of transmitting antennas.

公开(公告)号：US07356004B2

公开(公告)日：2008-04-08

申请号：US10636696

申请日：2003-08-08

Applicant: Takashi Yano ,  Satoshi Tamaki ,  Seishi Hanaoka ,  Takeshi Kato

Inventor： Takashi Yano ,  Satoshi Tamaki ,  Seishi Hanaoka ,  Takeshi Kato

IPC: H04Q7/00 ,  H04B7/08 ,  H04M1/00

CPC classification number: H04B7/0617 ,  H04B7/0615 ,  H04B7/0669 ,  H04B7/0848 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/005 ,  H04L1/0061 ,  H04L1/0066 ,  H04L1/06 ,  H04L1/16 ,  H04L1/1845 ,  H04L2001/0096 ,  H04W16/28

Abstract: This invention provides a mobile communication system which expanded the operation limitation of the heretofore adopted mobile communication systems and improved the spectrum efficiency greatly. A data transmission method for use in the mobile communication system of the present invention includes means for channel pluralizing by which to expand the Shannon limit and means for interference reduction by which to expand the interference limit. More specifically, a transmitting module comprises M units of modulators and L units of transmitting antennas, generates L units of signals by multiplying M units of modulated signals by a complex matrix consisting of M×L units of elements, and transmits the L units of signals from the L units of transmitting antennas.

Abstract translation: 本发明提供一种移动通信系统，其扩展了迄今采用的移动通信系统的操作限制，并大大提高了频谱效率。 在本发明的移动通信系统中使用的数据传输方法包括用于扩展香农限制的信道多路化装置和用于扩大干扰限制的干扰减少装置。 更具体地，发送模块包括M个调制器和L个发送天线单元，通过将M个调制信号乘以由MxL个单元组成的复数矩阵，生成L个单位的信号，并将来自 L单位发射天线。

公开(公告)号：US20060165190A1

公开(公告)日：2006-07-27

申请号：US11066185

申请日：2005-02-25

Applicant: Satoshi Tamaki ,  Takashi Yano ,  Seishi Hanaoka ,  Toshiyuki Saito

Inventor： Satoshi Tamaki ,  Takashi Yano ,  Seishi Hanaoka ,  Toshiyuki Saito

IPC: H04L5/12

CPC classification number: H04L1/1671 ,  H04L1/0003 ,  H04L1/0023 ,  H04L1/1812

Abstract: In a radio communication system, transmitter and receiver stations share information on a maximum number of bits communicated per symbol. The transmitter station encodes a signal with sufficient error correcting capabilities to create a codeword. The transmitter station allocates the bits from the codeword to each symbol, modulates the symbols using a modulation type which processes symbols each having a number of bits equal to or smaller than the maximum number of bits per symbol, and transmits the modulated symbols. The receiver station demodulates the symbols using a modulation type which processes a larger number of bits per symbol as the transmission path quality is higher from among modulation types which process symbols having a number of bits equal to or smaller than the maximum number of bits per symbol.

Abstract translation: 在无线电通信系统中，发射机和接收机站共享关于每个符号传送的最大比特数的信息。 发射机站对具有足够纠错能力的信号进行编码以产生码字。 发送站从码字分配每个符号的比特，使用调制类型对符号进行调制，该调制类型处理每个符号的数目等于或小于每个符号的最大比特数的符号，并发送调制符号。 接收站使用调制类型来解调符号，因为随着传输路径质量越高，处理具有等于或小于每个符号的最大比特数的比特数的符号的调制类型中，每个符号处理较大数量的比特 。

公开(公告)号：US20050143092A1

公开(公告)日：2005-06-30

申请号：US11017135

申请日：2004-12-21

Applicant: Tsuyoshi Tamaki ,  Takashi Yano ,  Satoshi Tamaki ,  Ryouichi Tanaka

Inventor： Tsuyoshi Tamaki ,  Takashi Yano ,  Satoshi Tamaki ,  Ryouichi Tanaka

IPC: G01S5/10 ,  H04W64/00 ,  H04Q7/20

CPC classification number: H04W64/00

Abstract: To provide a positioning system, a positioning method, and a positioning server, which are capable of improving accuracy in detection of a position. In a positioning system, three or more access points connected to a terminal station by wireless communication are connected to a positioning server through a network, the access points transmit, to the positioning server, information regarding times of having received a signal transmitted from any one of the access points or the terminal station, and the positioning server measures a position of the terminal station based on the information regarding the times, the information having been received from the access points. In the positioning system, the access points select a communication method for maximizing a strength of the signal received from the terminal station and receive the signal from the terminal station, and the positioning server measures the position of the terminal station based on the information regarding the times, the information having been received from the access points.

Abstract translation: 提供能够提高位置检测精度的定位系统，定位方法和定位服务器。 在定位系统中，通过无线通信连接到终端站的三个或更多个接入点通过网络连接到定位服务器，接入点向定位服务器发送关于接收到从任何一个发送的信号的时间的信息 的接入点或终端站，并且定位服务器根据关于时间的信息来测量终端站的位置，该信息已从接入点接收。 在定位系统中，接入点选择用于使从终端接收的信号的强度最大化并从终端接收信号的通信方法，并且定位服务器基于关于终端的信息来测量终端的位置 时间，从接入点接收到的信息。

公开(公告)号：US08355456B2

公开(公告)日：2013-01-15

申请号：US12836149

申请日：2010-07-14

Applicant: Satoshi Tamaki ,  Takashi Yano ,  Koki Uwano

Inventor： Satoshi Tamaki ,  Takashi Yano ,  Koki Uwano

IPC: H04K1/10

CPC classification number: H04L27/2626 ,  H04L25/03828 ,  H04L27/2647 ,  H04L27/2665

Abstract: A signal frequency of an interface signal between a baseband unit and a remote radio unit is decreased by downsampling, and the strain of the signal caused by downsampling is compensated for each subcarrier before an IFFT during transmission, and after FFT during reception.

Abstract translation: 通过下采样来降低基带单元和远程无线单元之间的接口信号的信号频率，并且在发送期间的IFFT之前和接收期间的FFT之后，针对每个子载波对由下采样引起的信号的应变进行补偿。

公开(公告)号：US20100255872A1

公开(公告)日：2010-10-07

申请号：US12820555

申请日：2010-06-22

Applicant: Takashi Yano ,  Satoshi Tamaki

Inventor： Takashi Yano ,  Satoshi Tamaki

IPC: H04W52/04

CPC classification number: H04W52/243 ,  H04W52/242 ,  H04W52/247 ,  H04W52/50

Abstract: Transmission power relative to a propagation path having a variation in gain is controlled to increase communication channel capacity, and a data rate is controlled in accordance with the variation of the increased communication channel capacity. In order to increase the communication channel capacity, the transmission power is determined so that the sum of noise power (=received noise power/propagation path gain) converted into one at a transmitter and the transmission power becomes constant. As a result, contrary to the background art, the transmission power is controlled to be reduced when the propagation path gain decreases and to be increased when the propagation path gain increases.

Abstract translation: 控制相对于具有增益变化的传播路径的传输功率以增加通信信道容量，并且根据增加的通信信道容量的变化来控制数据速率。 为了增加通信信道容量，确定发送功率，使得在发射机处转换为一个的发送功率和发送功率的噪声功率（=接收噪声功率/传播路径增益）之和变得恒定。 结果，与背景技术相反，当传播路径增益减小时，传输功率被控制为减小，并且当传播路径增益增加时传输功率被增加。

公开(公告)号：US07555269B2

公开(公告)日：2009-06-30

申请号：US11333199

申请日：2006-01-18

Applicant: Satoshi Tamaki ,  Takashi Yano ,  Seishi Hanaoka ,  Toshiyuki Saito

Inventor： Satoshi Tamaki ,  Takashi Yano ,  Seishi Hanaoka ,  Toshiyuki Saito

IPC: H04B1/02 ,  H04L27/00

CPC classification number: H04L1/0003 ,  H04L1/0007 ,  H04L1/1812

Abstract: A radio communication system for enabling control of a modulation scheme following variation in the propagation channel and control of a coding rate in a small amount of delay and arithmetic operation. In order to attain the object explained above, a transmitter station and a receiver station use in common the information of the maximum number of bits used for communication of each symbol. The transmitter station generates codeword by previously encoding the communication signal with the code having sufficient error correcting capability, assigns, to each symbol, the codeword to result in the maximum number of bits per symbol, and modulates and transmits the bits using the modulation scheme in which the number of bits per symbol is equal to or less than the maximum number of bits per symbol. Meanwhile, the receiver station demodulates, for each symbol, the bits with the modulation scheme, in which the number of bits per symbol is larger as the propagation channel quality is higher, among the modulation schemes in which the number of bits per symbol is less than the maximum number of bits per symbol and summarizes the demodulation results and executes the decoding process by adding the signal of zero likelihood to restore the shortage when the total sum of the number of bits per symbol in the modulation scheme used for the demodulation becomes equal to or larger than the predetermined value.

Abstract translation: 一种无线电通信系统，用于在传播信道变化之后进行调制方式的控制，并且在少量的延迟和算术运算中控制编码率。 为了实现上述目的，发送站和接收站共同使用用于每个符号通信的最大位数的信息。 发射机站通过预先编码具有足够纠错能力的码的通信信号生成码字，向每个符号分配码字以产生每个码元的最大比特数，并使用调制方案调制和发送比特 每个符号的比特数等于或小于每个符号的最大比特数。 同时，对于每个符号，接收机站在每个符号的比特数较少的调制方案中，针对每个符号解调具有调制方案的比特，其中每个符号的比特数随传播信道质量越高越大 而不是每个符号的最大比特数，并且总结了解调结果，并且当用于解调的调制方案中的每个符号的比特数的总和变得相等时，通过添加零似然度的信号来恢复缺陷来执行解码处理 达到或大于预定值。