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21. 发明授权

US07929592B1 Channel estimation device and method, demodulation device and method, and fading frequency decision device and method 有权
标题翻译：信道估计装置及方法，解调装置及方法，衰落频率决策装置及方法
公开(公告)号：US07929592B1
公开(公告)日：2011-04-19
申请号：US09701705
申请日：2000-03-31
申请人： Yukihiko Okumura , Hidehiro Ando , Masafumi Usuda , Yoshihiro Ishikawa , Seizo Onoe
发明人： Yukihiko Okumura , Hidehiro Ando , Masafumi Usuda , Yoshihiro Ishikawa , Seizo Onoe
IPC分类号： H04B1/69 , H04B1/707
CPC分类号： H04L25/0234 , H04B1/707 , H04B1/7115 , H04B2201/70701 , H04L25/0228
摘要： A channel estimation value of data symbols of a data channel is calculated by weighting and averaging pilot symbols in a parallel time multiplexing method. Also, a channel estimation value of data symbols during each data symbol interval is calculated by dividing data symbols in a slot into a plurality of data symbol intervals, selecting pilot symbols suitable for calculation of a channel estimation value of data symbols during each data symbol interval and weighting and averaging that pilot symbols. Also, a fading frequency is detected based on an inner product value of pilot symbols. Weighting factors are changed based on the detected fading frequency. Also, a channel estimation value is calculated by weighting and averaging pilot signals using a plurality of weighting sequences. The calculated channel estimation value is used to demodulate received data.
摘要翻译：通过并行时间复用方法对导频符号进行加权和平均来计算数据信道的数据符号的信道估计值。此外，通过将时隙中的数据符号划分为多个数据符号间隔来计算每个数据符号间隔期间的数据符号的信道估计值，在每个数据符号间隔期间选择适合于计算数据符号的信道估计值的导频符号并对该导频符号进行加权和平均。此外，基于导频符号的内积值来检测衰落频率。加权因子根据检测到的衰落频率而改变。此外，通过使用多个加权序列对导频信号进行加权和平均来计算信道估计值。所计算的信道估计值用于解调接收的数据。

22. 发明申请

US20100219884A1 TRANSMITTER, RECEIVER, POWER AMPLIFICATION METHOD, AND SIGNAL DEMODULATION METHOD 审中-公开
标题翻译：发射机，接收机，功率放大方法和信号解调方法
公开(公告)号：US20100219884A1
公开(公告)日：2010-09-02
申请号：US12714771
申请日：2010-03-01
申请人： Hiromasa Fujii , Takahiro Asai , Yukihiko Okumura , Shigeru Tomisato , Masaharu Hata
发明人： Hiromasa Fujii , Takahiro Asai , Yukihiko Okumura , Shigeru Tomisato , Masaharu Hata
IPC分类号： G06G7/12
CPC分类号： H04L27/2624 , H04L27/2626 , H04L27/2647
摘要： There is provided a transmitter including a nonlinear input-output conversion characteristic control unit configured to determine a nonlinear input-output conversion characteristic for converting a signal depending on a usage status of a frequency band; an amplitude control unit configured to convert an amplitude of the signal based on the determined nonlinear input-output conversion characteristic; and a transmission power amplification unit configured to amplify power of the signal with the converted amplitude. There is also provided a transmitter including a nonlinear input-output conversion characteristic control unit configured to determine a nonlinear input-output conversion characteristic for converting a signal depending on a usage status of a frequency band; plural transmission power amplification units having different nonlinear input-output conversion characteristics; and a selecting unit configured to select one of the plural transmission power amplification units based on the determined nonlinear input-output conversion characteristic.
摘要翻译：提供了一种发射机，包括：非线性输入 - 输出转换特性控制单元，被配置为根据频带的使用状态确定用于转换信号的非线性输入 - 输出转换特性; 幅度控制单元，被配置为基于所确定的非线性输入 - 输出转换特性来转换所述信号的幅度; 以及发送功率放大单元，被配置为以转换的幅度放大所述信号的功率。还提供了一种发射机，包括：非线性输入 - 输出转换特性控制单元，被配置为根据频带的使用状态确定用于转换信号的非线性输入 - 输出转换特性; 具有不同非线性输入输出转换特性的多个发送功率放大单元; 以及选择单元，被配置为基于所确定的非线性输入 - 输出转换特性来选择所述多个发送功率放大单元中的一个。

23. 发明申请

US20090291688A1 MOBILE TERMINAL AND METHOD USED IN THE SAME 有权
标题翻译：移动终端及其使用方法
公开(公告)号：US20090291688A1
公开(公告)日：2009-11-26
申请号：US12463744
申请日：2009-05-11
申请人： Naoki UEHARA , Yukihiko Okumura , Hidetoshi Ebara
发明人： Naoki UEHARA , Yukihiko Okumura , Hidetoshi Ebara
IPC分类号： H04W36/00
CPC分类号： H04W36/30 , H04J11/0086 , H04W36/32 , H04W88/02
摘要： A mobile terminal used in a cellular mobile communication system is disclosed. The mobile terminal includes a measuring unit configured to measure reception levels of received signals; an averaging unit configured to average the measured reception levels based on a forgetting factor; a cell reselection unit configured to reselect a cell based on the averaged reception level; and a factor determining unit configured to determine the forgetting factor according to parameters sent from a network.
摘要翻译：公开了一种在蜂窝移动通信系统中使用的移动终端。移动终端包括：测量单元，被配置为测量接收信号的接收电平; 平均单元，被配置为基于遗忘因子来平均所测量的接收电平; 小区重选单元，被配置为基于所述平均接收电平重新选择小区; 以及因素确定单元，被配置为根据从网络发送的参数来确定遗忘因子。

24. 发明授权

US07277721B2 Transmission power control apparatus and method in a mobile communication system, mobile station, and communication apparatus 有权
标题翻译：移动通信系统，移动台以及通信装置中的发送功率控制装置及方法
公开(公告)号：US07277721B2
公开(公告)日：2007-10-02
申请号：US10380768
申请日：2002-07-23
申请人： Yukihiko Okumura , Shinsuke Ogawa
发明人： Yukihiko Okumura , Shinsuke Ogawa
IPC分类号： H04B7/00
CPC分类号： H04W52/40 , H04W52/08 , H04W52/10 , H04W52/12 , H04W52/241 , H04W52/50
摘要： A transmission power control device is provided that includes: a transmission loss calculator that calculates a transmission loss in the electric wave transmission path between a mobile station and each base station; and a transmission power control information determiner that determines which transmission power control information is to be used in a transmission power control operation at the mobile station, based on transmission power control information transmitted from each base station to the mobile station and the transmission loss in the transmission path between the mobile station and each base station calculated by the transmission loss calculator. This transmission power control device may further include an autonomous controller that increases transmission power from a current value in accordance with predetermined characteristics, regardless of transmission power control information from another communication device, when reception signal quality has become lower than a predetermined quality level. With this structure, after synchronization with a signal from the base station is established at the mobile station, the transmission power is controlled to increase from the initial value in accordance with the predetermined characteristics, regardless of the transmission power control information transmitted from the base station.
摘要翻译：提供了一种传输功率控制装置，包括：传输损耗计算器，其计算移动站和每个基站之间的电波传输路径中的传输损耗; 以及发送功率控制信息确定器，其基于从每个基站向移动台发送的发送功率控制信息，确定在移动台的发送功率控制操作中要使用哪个发送功率控制信息，以及发送功率控制信息的发送功率控制信息由传输损耗计算器计算的移动站与每个基站之间的传输路径。该发送功率控制装置还可以包括：当接收信号质量低于预定质量水平时，与来自另一通信装置的发送功率控制信息无关，根据预定特性，从当前值增加发送功率的自主控制器。利用这种结构，在与基站的信号同步之后，在移动站建立起来，不管基站发送的发送功率控制信息如何，发送功率被控制为根据预定特性从初始值增加。

25. 发明申请

US20070173280A1 Transmission power control apparatus and control method thereof 审中-公开
标题翻译：发射功率控制装置及其控制方法
公开(公告)号：US20070173280A1
公开(公告)日：2007-07-26
申请号：US11727281
申请日：2007-03-26
申请人： Natsuhiko Nakayauchi , Norio Tomiyoshi , Osamu Yamano , Yukihiko Okumura
发明人： Natsuhiko Nakayauchi , Norio Tomiyoshi , Osamu Yamano , Yukihiko Okumura
IPC分类号： H04B7/00 , H04Q7/20
CPC分类号： H04W52/241 , H04W52/12
摘要： A receiving side compares measured quality of received data with target quality and performs variable control of a target SIR, as well as, compares that target SIR with measured SIR and transmits transmission-power information (TPC information) that is created based on the comparison result to a transmitting side, then the transmitting side performs control of the transmission power based on that transmission power control information. Furthermore, the receiving side monitors whether the transmission power has reached a limit, and stops update of the target SIR when the transmission power has reached the limit. Also, when the communication environment changes and it becomes possible to perform transmission power control, the receiving side restarts variable control of the target SIR.
摘要翻译：接收侧将接收到的数据的质量与目标质量进行比较，并执行目标SIR的可变控制，并且将目标SIR与测量的SIR进行比较，并且发送基于比较结果创建的发送功率信息（TPC信息）然后发送侧基于该发送功率控制信息进行发送功率的控制。此外，接收侧监视发送功率是否达到限制，并且当发送功率达到极限时，停止目标SIR的更新。此外，当通信环境改变并且可以执行发送功率控制时，接收侧重新开始目标SIR的可变控制。

26. 发明授权

US07142529B2 Data multiplexing method and data multiplexer, and data transmitting method and data transmitter 有权
公开(公告)号：US07142529B2
公开(公告)日：2006-11-28
申请号：US11226195
申请日：2005-09-15
申请人： Yukihiko Okumura , Hidehiro Ando
发明人： Yukihiko Okumura , Hidehiro Ando
IPC分类号： H04J3/06
CPC分类号： H04L1/0071 , H03M13/271 , H03M13/2789 , H03M13/2792 , H04L1/004 , H04L1/0041 , H04L1/0078 , H04L25/023 , H04L27/20 , H04L27/22
摘要： An effective data multiplexing method wherein an error correction ability is exerted at the maximum so that data transmission quality is improved and a data transmitting method in which an interleaving process applicable to data transmission using interpolation pilot signal is performed are provided. The data multiplexing method includes the steps of: coding input data for each input channel; multiplexing said data which is coded; performing an interleaving process on said data which is multiplexed; and outputting said data. In the data transmitting method, when an interleaving process is performed, an interleaver is used in which the number of columns of the interleaver is twice as many as the number of slots of a frame.

27. 发明授权

US07139243B2 Data transmission method, data transmission system, transmitter and receiver 有权
公开(公告)号：US07139243B2
公开(公告)日：2006-11-21
申请号：US09998601
申请日：2001-11-16
申请人： Yukihiko Okumura
发明人： Yukihiko Okumura
IPC分类号： G01R31/08 , H04B7/00 , H04B1/44
CPC分类号： H04L1/0071 , H04L1/0046 , H04L1/0054 , H04L1/0061 , H04L1/0075
摘要： A data transmission method etc. is provided. At a transmitting side, if a frame contains transmission data, frame data containing the transmission data and a calculated error-detecting code is generated. If the frame contains no transmission data, frame data containing neither transmission data nor an error-detecting code is generated. At a receiving side, one or more final bit positions of the frame data are assumed in the frame, transmission data and an error-detecting code are assumed in the frame, and the error-detecting code of the assumed transmission data is calculated. If there is a position where the assumed error-detecting code matches the error-detecting code calculated based on the assumed transmission data, it is decided that the position is the final bit position. Otherwise, it is decided that the frame contains no transmission data or that the received frame data contains an error.

28. 发明授权

US06944468B2 Transmit power control method and transmit power control system suitable to mobile communications 有权
标题翻译：发射功率控制方法和发射功率控制系统适用于移动通信
公开(公告)号：US06944468B2
公开(公告)日：2005-09-13
申请号：US10183452
申请日：2002-06-28
申请人： Yukihiko Okumura
发明人： Yukihiko Okumura
IPC分类号： H04B1/04 , H04B7/005 , H04B7/26 , H04J13/00 , H04W52/04 , H04W52/12 , H04W52/20 , H04W52/36 , H04W52/44 , H04B7/00
CPC分类号： H04W52/12 , H04W52/20 , H04W52/36 , H04W52/44
摘要： A transmit power control method and system used in radio communications between a transmitting station and a receiving station is provided. The method and system employ a so-called double closed-loop control technique, and target signal quality is updated so that data quality received at the receiving station satisfies prescribed target data quality. When data are transmitted discontinuously, first target signal quality updated immediately before an idle period is held, and second target signal quality higher than the first target signal quality is set when data transmission resumes immediately after the idle period. The transmit power of the transmitting station is regulated so that signal quality at the receiving station satisfies the second target signal quality when the data transmission resumes.
摘要翻译：提供了一种在发送站和接收站之间的无线电通信中使用的发射功率控制方法和系统。该方法和系统采用所谓的双闭环控制技术，更新目标信号质量，使得在接收站接收的数据质量满足规定的目标数据质量。当数据不连续发送时，在空闲期间之前立即更新的第一目标信号质量被保持，并且当在空闲周期之后立即恢复数据传输时，设置高于第一目标信号质量的第二目标信号质量。调节发送站的发送功率，使数据发送恢复时接收站的信号质量满足第二目标信号质量。

29. 发明授权

US08787279B2 Radio communication system, centralized station, control station apparatus, radio base station and coordinated transmission method for determining an assignment of cluster patterns 有权
标题翻译：无线电通信系统，集中站，控制站装置，无线基站以及用于确定集群模式分配的协调传输方法
公开(公告)号：US08787279B2
公开(公告)日：2014-07-22
申请号：US13191645
申请日：2011-07-27
申请人： Anass Benjebbour , Yukihiko Okumura , Yusuke Ohwatari
发明人： Anass Benjebbour , Yukihiko Okumura , Yusuke Ohwatari
IPC分类号： H04W28/04
CPC分类号： H04W16/12 , H04W16/10 , H04W16/28
摘要： The radio communication system of the present invention is provided with a cluster pattern determining section that determines the assignment of each cluster pattern to each cluster so as to suppress inter-cluster interference with other neighboring clusters less than or equal to a predetermined value, the cluster pattern is defining a directional pattern of which directional beams emitted from the respective radio base stations face each other for each identical frequency block between neighboring sectors in a cluster composed of neighboring cells, the each cluster pattern being in different combinations of directional patterns and frequency blocks.
摘要翻译：本发明的无线电通信系统具有：群集模式确定部，其确定每个群集模式对每个群集的分配，以便抑制与小于或等于预定值的其他相邻群的簇间干扰;群集模式定义了从各个无线电基站发射的定向波束对于由相邻小区组成的群集中的相邻扇区之间的每个相同频率块彼此面对的方向模式，每个簇模式处于方向模式和频率块的不同组合。

30. 发明申请

US20130176979A1 RADIO COMMUNICATION CONTROL METHOD, RADIO COMMUNICATION SYSTEM, RADIO BASE STATION, AND MOBILE TERMINAL 审中-公开
标题翻译：无线电通信控制方法，无线电通信系统，无线基站和移动终端
公开(公告)号：US20130176979A1
公开(公告)日：2013-07-11
申请号：US13822087
申请日：2011-09-01
申请人： Yusuke Ohwatari , Nobuhiko Miki , Tetsushi Abe , Yukihiko Okumura
发明人： Yusuke Ohwatari , Nobuhiko Miki , Tetsushi Abe , Yukihiko Okumura
IPC分类号： H04W72/04
CPC分类号： H04W72/046 , H04B7/024 , H04B7/0617 , H04B7/0634
摘要： In each Mobile terminal, channel impulse characteristics from radio base stations to the mobile terminal is calculated. In a radio communication system, under the assumption that each of the mobile terminals performs optimum receiving beamforming in order to receive a data signal from a radio base station that actually sends the data signal to the mobile terminal, optimum receiving beamforming characteristics are estimated for each mobile terminal. Each of radio base stations that share optimum receiving beamforming characteristics calculates precoding characteristics for each mobile terminal according to the optimum receiving beamforming characteristics such that main beams are directed to mobile terminals to which the radio base station sends data signals and null beams are directed to mobile terminals to which the radio base station does not send data signals.
摘要翻译：在每个移动终端中，计算从无线基站到移动终端的信道脉冲特性。在无线电通信系统中，在每个移动终端执行最佳接收波束成形以便从实际发送数据信号的移动终端接收来自无线电基站的数据信号的假设下，假定每个移动终端。共享最佳接收波束形成特性的每个无线电基站根据最佳的接收波束成形特性来计算每个移动终端的预编码特性，使得主波束被引导到无线电基站发送数据信号的移动终端，空波束被引导到移动无线基站不发送数据信号的终端。

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