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91. 发明申请

US20050276242A1 Base station, a mobile station, a radio communications system, and a radio transmission method using spread spectrum and chip repetition 有权
标题翻译：基站，移动台，无线电通信系统以及使用扩展频谱和码片重复的无线电传输方法
公开(公告)号：US20050276242A1
公开(公告)日：2005-12-15
申请号：US11071195
申请日：2005-03-04
申请人： Yoshikazu Goto , Hiroyuki Atarashi , Mamoru Sawahashi
发明人： Yoshikazu Goto , Hiroyuki Atarashi , Mamoru Sawahashi
IPC分类号： H04B1/7097 , H04J11/00 , H04J13/00 , H04L27/01 , H04W16/28 , H04W72/04 , H04W76/02 , H04B7/216
CPC分类号： H04B1/707 , H04B1/692 , H04B2201/70706 , H04B2201/709709
摘要： A base station, a mobile station, a radio communications system, and a radio transmission method are disclosed. The base station includes a control information determining unit configured to determine control information that includes a spreading factor, the number of chip repetitions, and a phase unique to the mobile station, based on at least one of information about the type of cell environments in which the mobile station is present, information about the number of mobile stations that are present in the cell, information about information rate required by the mobile station, information about a type of traffic, information about a radio parameter of the mobile station, information about a propagation path condition, and information about interference from an adjacent cell, and configured to transmit the spreading factor, the number of chip repetitions, and the unique phase of the mobile station that is determined to the mobile station.
摘要翻译：公开了一种基站，移动台，无线通信系统和无线传输方法。基站包括：控制信息确定单元，被配置为基于以下信息中的至少一个来确定包括扩展因子，码片重复次数和移动台唯一的相位的控制信息，其中，关于小区环境的类型的信息移动站存在，关于小区中存在的移动站的数量的信息，关于移动站所需的信息速率的信息，关于业务类型的信息，关于移动站的无线电参数的信息，关于移动站的信息传播路径条件和关于来自相邻小区的干扰的信息，并且被配置为发送确定给移动台的扩频因子，码片重复次数和移动台的唯一相位。

92. 发明申请

US20050088996A1 Wireless communications system and method using transmission timing control 失效
标题翻译：无线通信系统和方法采用传输定时控制
公开(公告)号：US20050088996A1
公开(公告)日：2005-04-28
申请号：US10959190
申请日：2004-10-07
申请人： Teruo Kawamura , Hiroyuki Atarashi , Mamoru Sawahashi
发明人： Teruo Kawamura , Hiroyuki Atarashi , Mamoru Sawahashi
IPC分类号： H04J13/00 , H04B1/7073 , H04B7/26 , H04W24/00 , H04W28/26 , H04W56/00 , H04W76/02 , H04W92/10 , H04B7/216
CPC分类号： H04W56/0045 , H04B2201/709709 , H04W24/00 , H04W28/26 , H04W92/10
摘要： A wireless communications system includes a base station and multiple mobile stations performing wireless communication with the base station in a DS-CDMA scheme. Each of the mobile stations has a transmission unit configured to transmit a timing difference detection packet to the base station, prior to transmitting packet data. The base station has a transmission timing control unit configured to detect a difference in signal receive timing from the mobile stations based on the timing difference detection packet, produce transmission timing control information for each of the mobile stations based on the detection result, and supply the transmission timing control information to each of the mobile stations to cause the mobile stations to adjust the transmission timing of the packet data.
摘要翻译：无线通信系统包括基站和在DS-CDMA方案中与基站进行无线通信的多个移动台。每个移动站具有发送单元，其被配置为在发送分组数据之前向基站发送定时差检测分组。基站具有发送定时控制部，其基于定时差检测分组来检测来自移动台的信号接收定时的差异，根据检测结果生成各个移动台的发送定时控制信息，向各个移动台发送定时控制信息，使移动台调整分组数据的发送定时。

93. 发明授权

US07826514B2 Radio transmitter-receiving apparatus and radio transmitting-receiving method for estimating noise and interference power in radio transmission using code spread 有权
标题翻译：无线电发射机接收设备和用于使用码扩展估计无线电传输中的噪声和干扰功率的无线电发射接收方法
公开(公告)号：US07826514B2
公开(公告)日：2010-11-02
申请号：US10526225
申请日：2004-04-26
申请人： Yoshikazu Kakura , Shousei Yoshida , Hiroyuki Atarashi , Noriyuki Maeda
发明人： Yoshikazu Kakura , Shousei Yoshida , Hiroyuki Atarashi , Noriyuki Maeda
IPC分类号： H04B1/00
CPC分类号： H04L5/026 , H04J11/0036 , H04J13/004 , H04L27/2613
摘要： A radio transmitter-receiver wherein a pilot symbol is used in the transmitter that has undergone M-chip spreading on the frequency axis and N-chip spreading on the time axis by a spreading code of M×N chip length (where M and N are any integers equal to or greater than 2), and in the receiver, a spreading code that is not used in spreading said pilot signal is used as a despreading code to despread a received signal and then estimate noise and interference power. The spreading code that is used to spread the pilot symbol and the despreading code that is used in despreading are assigned so as to be orthogonal even if only in N chips on the time axis.
摘要翻译：一种无线电发射机 - 接收机，其中在发射机中使用导频符号，该发射机在频率轴上经过M码片扩频，并在时间轴上以N×M码片长度的扩频码（其中M和N为任何整数等于或大于2），并且在接收机中，将不用于扩展所述导频信号的扩展码用作解扩码以对接收信号进行解扩，然后估计噪声和干扰功率。用于扩展导频符号的扩展码和解扩使用的解扩码被分配为正交，即使只在时间轴上的N个码片。

94. 发明授权

US07526041B2 Channel estimation circuit and channel estimation method 失效
标题翻译：信道估计电路和信道估计方法
公开(公告)号：US07526041B2
公开(公告)日：2009-04-28
申请号：US10554097
申请日：2004-04-26
申请人： Yoshikazu Kakura , Hiroyuki Atarashi , Noriyuki Maeda
发明人： Yoshikazu Kakura , Hiroyuki Atarashi , Noriyuki Maeda
IPC分类号： H04B15/00 , H04B1/69
CPC分类号： H04L25/0224
摘要： A channel estimation circuit of the present invention includes: a tentative channel estimation unit for performing channel estimation by making use of a received signal and outputting the result of estimation as a tentative channel estimation signal; a noise/interference power estimation unit for estimating noise and interference power by making use of the received signal and outputting the result of estimation as a noise/interference power estimation signal; a threshold decision unit for establishing a threshold signal by making use of the noise/interference power estimation signal to output the threshold signal; and an effective path detection unit for outputting, as a channel estimation signal, paths of the tentative channel estimation signal that remains after noise paths having powers smaller than the threshold signal have been removed.
摘要翻译：本发明的信道估计电路包括：临时信道估计单元，用于通过使用接收信号进行信道估计，并将估计结果作为暂时信道估计信号输出; 噪声/干扰功率估计单元，用于通过使用接收信号来估计噪声和干扰功率，并将估计结果作为噪声/干扰功率估计信号输出; 阈值判定单元，用于通过利用噪声/干扰功率估计信号建立阈值信号，以输出阈值信号; 以及有效路径检测单元，用于作为信道估计信号输出在具有小于阈值信号的功率的噪声路径之后保留的临时信道估计信号的路径。

95. 发明申请

US20060182167A1 Radio transmitter-receiving apparatus and radio transmitting-receiving method for estimating noise and interference power in radio tramission using code spread 有权
标题翻译：无线发射机接收装置和无线电发射接收方法，用于使用码扩展来估计无线电电路中的噪声和干扰功率
公开(公告)号：US20060182167A1
公开(公告)日：2006-08-17
申请号：US10526225
申请日：2004-04-26
申请人： Yoshikazu Kakura , Shousei Yoshida , Hiroyuki Atarashi , Noriyuki Maeda
发明人： Yoshikazu Kakura , Shousei Yoshida , Hiroyuki Atarashi , Noriyuki Maeda
IPC分类号： H04B1/707
CPC分类号： H04L5/026 , H04J11/0036 , H04J13/004 , H04L27/2613
摘要： A radio transmitter-receiver wherein a pilot symbol is used in the transmitter that has undergone M-chip spreading on the frequency axis and N-chip spreading on the time axis by a spreading code of M×N chip length (where M and N are any integers equal to or greater than 2), and in the receiver, a spreading code that is not used in spreading said pilot signal is used as a despreading code to despread a received signal and then estimate noise and interference power. The spreading code that is used to spread the pilot symbol and the despreading code that is used in despreading are assigned so as to be orthogonal even if only in N chips on the time axis.
摘要翻译：一种无线电发射机 - 接收机，其中在发射机中使用导频符号，该发射机在频率轴上经历了M码片扩频，并且在时间轴上通过M×N码片长度的扩展码（其中M和N是任何整数）进行N码片扩频等于或大于2），并且在接收机中，将不用于扩展所述导频信号的扩展码用作解扩码，以对接收信号进行解扩，然后估计噪声和干扰功率。用于扩展导频符号的扩展码和解扩使用的解扩码被分配为正交，即使只在时间轴上的N个码片。

96. 发明申请

US20060222119A1 Channel estimation circuit and channel estimation method 失效
标题翻译：信道估计电路和信道估计方法
公开(公告)号：US20060222119A1
公开(公告)日：2006-10-05
申请号：US10554097
申请日：2004-04-26
申请人： Yoshikazu Kakura , Hiroyuki Atarashi , Noriyuki Maeda
发明人： Yoshikazu Kakura , Hiroyuki Atarashi , Noriyuki Maeda
IPC分类号： H03D1/04
CPC分类号： H04L25/0224
摘要： A channel estimation circuit (101) of the present invention includes: a tentative channel estimation unit (102) for performing channel estimation by making use of a received signal and outputting the result of estimation as a tentative channel estimation signal; a noise/interference power estimation unit (103) for estimating noise and interference power by making use of the received signal and outputting the result of estimation as a noise/interference power estimation signal; a threshold decision unit (104) for establishing a threshold signal by making use of the noise/interference power estimation signal to output the threshold signal; and an effective path detection unit (105) for outputting, as a channel estimation signal, paths of the tentative channel estimation signal that remains after noise paths having powers smaller than the threshold signal have been removed.
摘要翻译：本发明的信道估计电路（101）包括：暂定信道估计单元（102），用于通过利用接收信号进行信道估计并输出估计结果作为暂时信道估计信号; 噪声/干扰功率估计单元，用于通过利用接收信号来估计噪声和干扰功率，并将估计结果作为噪声/干扰功率估计信号输出; 阈值判定单元，用于通过利用所述噪声/干扰功率估计信号建立阈值信号以输出所述阈值信号; 以及有效路径检测单元（105），用于作为信道估计信号输出在具有小于阈值信号的功率的噪声路径已经被去除之后剩余的暂时信道估计信号的路径。

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