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1. 发明授权

US08229042B2 Orthogonal frequency division multiplexing demodulator 有权
标题翻译：正交频分复用解调器
公开(公告)号：US08229042B2
公开(公告)日：2012-07-24
申请号：US12575057
申请日：2009-10-07
申请人： Koichi Aratani , Hirotake Ishii , Dan Xu
发明人： Koichi Aratani , Hirotake Ishii , Dan Xu
IPC分类号： H04L27/06
CPC分类号： H04L27/2679 , H04L27/2662
摘要： An OFDM demodulator which does not require a reference signal for synchronization of carriers and can reduce influence of phase rotation by a propagation path when carrier synchronization is made. The OFDM demodulator performs Fourier transform plural times in 2 or more different operation ranges for the same OFDM symbol, calculates phases of sub carriers from the plural-time results of the Fourier transform, compares the calculated phases for each of the plural-time results of the Fourier transform and detects an error in frequency of reproduction carrier from the compared results.
摘要翻译： OFDM解调器，其不需要用于载波同步的参考信号，并且当进行载波同步时可以减少传播路径的相位旋转的影响。 OFDM解调器在相同的OFDM符号的2个以上的不同的操作范围内进行多次傅立叶变换，从傅里叶变换的多次结果中计算出副载波的相位，傅里叶变换并从比较结果检测再现载波的频率误差。

2. 发明授权

US08238286B2 Radio base station and radio mobile station 有权
标题翻译：无线电基站和无线电移动台
公开(公告)号：US08238286B2
公开(公告)日：2012-08-07
申请号：US12486095
申请日：2009-06-17
申请人： Hirotake Ishii , Koichi Aratani
发明人： Hirotake Ishii , Koichi Aratani
IPC分类号： H04B7/212
CPC分类号： H04L27/2655 , H04L27/2613 , H04L27/2626 , H04L27/2656 , H04L27/2662 , H04L27/2684
摘要： The base station transmits a synchronization signal that contains a pattern of repeated SYNC's generated by dividing FFT size by N wherein the pattern of repeated SYNC's is inverted in polarity for each of the SYNC's according to a code outputted from a code generating circuit. CP length is M/N of FFT size, and the number of divisions (M+N) of a symbol of the synchronization signal is brought into agreement with the code length L of Barker code. The mobile station detects the synchronization signal by using a first matched filter that has as many taps as (FFT size/N) stages, and uses a pattern of SYNC's generated by dividing FFT size by N as a tap coefficient, and a second matched filter that has as many taps as (M+N) stages and uses Barker code as a tap coefficient.
摘要翻译：基站发送同步信号，该同步信号包含通过将FFT大小除以N而产生的重复SYNC的模式，其中根据从代码产生电路输出的代码，重复SYNC的模式的极性针对每个SYNC反转。 CP长度是FFT大小的M / N，同步信号的符号的分割数（M + N）与Barker码的码长L一致。移动站通过使用具有（FFT大小/ N）级的抽头数量的第一匹配滤波器来检测同步信号，并且使用通过将FFT大小除以N而产生的SYNC的模式作为抽头系数，以及第二匹配滤波器它具有与（M + N）个阶段一样多的抽头，并且使用巴克码作为抽头系数。

3. 发明授权

US08462718B2 Resource assignment method and communication apparatus for wireless communication system 失效
标题翻译：无线通信系统的资源分配方法和通信装置
公开(公告)号：US08462718B2
公开(公告)日：2013-06-11
申请号：US12788509
申请日：2010-05-27
申请人： Satoshi Tamaki , Rintaro Katayama , Hirotake Ishii , Tomonori Yamamoto
发明人： Satoshi Tamaki , Rintaro Katayama , Hirotake Ishii , Tomonori Yamamoto
IPC分类号： H04W4/00
CPC分类号： H04W52/42 , H04W48/08 , H04W72/0453 , H04W92/20
摘要： Resources are assigned in units of resource blocks each composed of one or more subcarriers, inter-cell interference adjustment control information is notified to each other among base stations, a transmit power limitation on each of the resource blocks in a cell is decided based on the inter-cell interference adjustment control information; and the decision of the transmit power limitation is changed sequentially beginning at a resource block having a transmit power limitation different from the transmit power limitation on an adjacent resource block.
摘要翻译：资源以每个由一个或多个子载波组成的资源块为单位进行分配，小区间干扰调整控制信息在基站之间通知彼此，小区中的每个资源块的发射功率限制基于小区间干扰调整控制信息; 并且从具有与相邻资源块上的发射功率限制不同的发射功率限制的资源块开始依次改变发射功率限制的决定。

4. 发明申请

US20110244866A1 WIRELESS COMMUNICATION SYSTEM AND LOAD BALANCING AWARE HANDOVER METHOD THEREFOR 有权
标题翻译：无线通信系统和负载均衡转换方法
公开(公告)号：US20110244866A1
公开(公告)日：2011-10-06
申请号：US12985469
申请日：2011-01-06
申请人： Tomonori YAMAMOTO , Satoshi Tamaki , Rintaro Katayama , Hirotake Ishii
发明人： Tomonori YAMAMOTO , Satoshi Tamaki , Rintaro Katayama , Hirotake Ishii
IPC分类号： H04W36/24
CPC分类号： H04W36/22 , H04W36/04
摘要： An object of the invention is to provide a wireless communication system in which the load of each cell and interference between cells are taken into account. In a handover-candidate base station and a handover-source base station, parameters for interference-reducing scheduling and handover facilitating processing are adjusted based on the mutual load information. When the handover-candidate base station, to be used for load balancing, is a large-diameter cell, transmit power control and frequency scheduling are adjusted by taking account of the load state at a cell edge. When the handover-source base station has a small-diameter cell, the number of terminals to be handed over is adjusted by taking account of the load state of the handover-candidate base station. Thus, both of interference control and load balancing are achieved.
摘要翻译：本发明的目的是提供一种无线通信系统，其中考虑每个小区的负载和小区之间的干扰。在切换候选基站和切换源基站中，基于相互负载信息来调整用于减少干扰的调度和切换促进处理的参数。当用于负载均衡的切换候选基站是大直径小区时，通过考虑小区边缘处的负载状态来调整发射功率控制和频率调度。当切换源基站具有小直径小区时，通过考虑切换候选基站的负载状态来调整要切换的终端的数量。因此，实现了干扰控制和负载均衡。

5. 发明申请

US20110212744A1 TRANSMIT POWER CONTROL METHOD FOR RADIO COMMUNICATION SYSTEM AND RADIO BASE STATION DEVICE 失效
标题翻译：用于无线电通信系统和无线电基站的发射功率控制方法
公开(公告)号：US20110212744A1
公开(公告)日：2011-09-01
申请号：US12986377
申请日：2011-01-07
申请人： Rintaro KATAYAMA , Satoshi Tamaki , Tomonori Yamamoto , Hirotake Ishii , Shigenori Hayase
发明人： Rintaro KATAYAMA , Satoshi Tamaki , Tomonori Yamamoto , Hirotake Ishii , Shigenori Hayase
IPC分类号： H04W52/06
CPC分类号： H04W52/143 , H04W52/241 , H04W52/245
摘要： A communication device includes pilot signal sending part and transmit power control part and holds a criterion value indicating target channel quality for mobile stations within the area covered by the base station. It creates quality data from reports from one or plural mobile stations, stores the quality data, creates a first representative value indicating average channel quality for the mobile station(s) from the stored quality data, and changes the transmit power depending on the result of comparison between the first representative value and the criterion value. It creates a second representative value indicating distribution of low channel quality from the stored quality data and updates the criterion value depending on the result of comparison between the second representative value and the criterion value.
摘要翻译：通信设备包括导频信号发送部分和发射功率控制部分，并且保持指示由基站覆盖的区域内的移动台的目标信道质量的标准值。它从一个或多个移动站的报告创建质量数据，存储质量数据，从存储的质量数据创建指示移动站的平均信道质量的第一代表值，并且根据所存储的质量数据的结果来改变发送功率第一代表值与标准值之间的比较。它从存储的质量数据创建指示低通道质量的分布的第二代表值，并且根据第二代表值与标准值之间的比较结果来更新标准值。

6. 发明申请

US20060199550A1 Software defined radio and library configuration therefor 失效
标题翻译：软件定义的无线电和库配置
公开(公告)号：US20060199550A1
公开(公告)日：2006-09-07
申请号：US11349199
申请日：2006-02-08
申请人： Takashi Ishikawa , Manabu Kawabe , Katsuhiko Tsunehara , Hirotake Ishii
发明人： Takashi Ishikawa , Manabu Kawabe , Katsuhiko Tsunehara , Hirotake Ishii
IPC分类号： H04B1/40
CPC分类号： H04B1/0003 , H04B1/40
摘要： A radio communication apparatus having a radio modem for processing a signal in a radio frequency band, a signal processor for processing a base band of a transmission or reception signal, and a CPU for processing a protocol. The signal processor includes signal processing blocks implemented by programmable software. Each of the signal processing blocks processes a signal of reception signal data input from the radio modem or from a preceding stage of one of the signal processing blocks or a signal of transmission signal data input from the CPU or from the preceding stage of signal processing block on the basis of a control signal input together with the transmission signal data or the reception signal data. The control signal can include information required by all the signal processing blocks in a common format.
摘要翻译：一种无线电通信装置，具有用于处理无线电频带中的信号的无线电调制解调器，用于处理发送或接收信号的基带的信号处理器和用于处理协议的CPU。信号处理器包括由可编程软件实现的信号处理块。每个信号处理块处理从无线电调制解调器输入的接收信号数据的信号或从信号处理块中的一个输入的传输信号数据的信号或从信号处理块的前一级输入的传输信号数据的信号基于与发送信号数据或接收信号数据一起输入的控制信号。控制信号可以包括通用格式的所有信号处理块所需的信息。

7. 发明授权

US09161277B2 Mobility control method mitigating inter cell interference and base stations which adopt the method 有权
标题翻译：采用该方法的移动性控制方法减轻小区间干扰和基站
公开(公告)号：US09161277B2
公开(公告)日：2015-10-13
申请号：US13025275
申请日：2011-02-11
申请人： Tomonori Yamamoto , Satoshi Tamaki , Rintaro Katayama , Hirotake Ishii
发明人： Tomonori Yamamoto , Satoshi Tamaki , Rintaro Katayama , Hirotake Ishii
IPC分类号： H04W36/00 , H04W36/20
CPC分类号： H04W36/20 , H04W36/0083
摘要： Interference applied to neighbor cells during terminal handovers can be reduced in wireless communication systems containing base stations having different cell sizes. A serving cell makes handover judgment criteria easier based on pre-acquired cell size information on its own cell and cell size information of neighbor cells in order to facilitate terminal handovers from a base station with a large cell size to a base station with a small cell size. The serving cell finds evaluation function values based on the propagation state (e.g. reference signal received power) between the terminal and target cell, and the interference and load information exchanged between the base stations, and selects the terminal for handover by comparing the evaluation function value with the handover criteria value. The system selects a target cell having a good effect in lowering interference such as a cell with large reference signal received power acquired from a terminal, to serve as the handover destination.
摘要翻译：在包含具有不同小区大小的基站的无线通信系统中，可以减少在终端切换期间应用于相邻小区的干扰。为了便于从具有大小区大小的基站到具有小小区的基站的终端切换，服务小区基于对其自己的小区的预获取小区大小信息和相邻小区的小区大小信息来更容易地进行切换判断准则尺寸。服务小区基于终端与目标小区之间的传播状态（例如，参考信号接收功率）以及基站之间交换的干扰和负载信息来找到评估函数值，并通过比较评估函数值来选择切换终端具有切换标准值。该系统选择具有从终端获取的具有大的参考信号接收功率的小区等降低干扰效果的目标小区，作为切换目的地。

8. 发明授权

US08660049B2 Wireless communication system, base station and network control apparatus 失效
标题翻译：无线通信系统，基站和网络控制装置
公开(公告)号：US08660049B2
公开(公告)日：2014-02-25
申请号：US13015810
申请日：2011-01-28
申请人： Rintaro Katayama , Satoshi Tamaki , Tomonori Yamamoto , Hirotake Ishii
发明人： Rintaro Katayama , Satoshi Tamaki , Tomonori Yamamoto , Hirotake Ishii
IPC分类号： H04H20/71 , H04J3/26
CPC分类号： H04W72/005 , H04L5/0032 , H04L5/0035 , H04L5/0051 , H04L5/0053 , H04L5/0096
摘要： In a time slot in which a first base station for performing a multicast transmission executes the multicast transmission, a second base station which does not perform the multicast transmission does not perform a unicast data transmission. The time slot in which the first base station performs the multicast transmission is notified to the second base station from a multicast control apparatus for performing scheduling of the multicast transmission to the first base station. Information to receive the multicast transmission is notified from the second base station to a terminal connected to the second base station.
摘要翻译：在用于执行多播传输的第一基站执行多播传输的时隙中，不执行多播传输的第二基站不执行单播数据传输。第一基站执行组播发送的时隙从用于向第一基站进行组播传输的调度的组播控制装置通知给第二基站。从第二基站向连接到第二基站的终端通知接收组播传输的信息。

9. 发明授权

US08463272B2 Wireless communication system and load balancing aware handover method therefor 有权
标题翻译：无线通信系统及其负载平衡感知切换方法
公开(公告)号：US08463272B2
公开(公告)日：2013-06-11
申请号：US12985469
申请日：2011-01-06
申请人： Tomonori Yamamoto , Satoshi Tamaki , Rintaro Katayama , Hirotake Ishii
发明人： Tomonori Yamamoto , Satoshi Tamaki , Rintaro Katayama , Hirotake Ishii
IPC分类号： H04W36/00
CPC分类号： H04W36/22 , H04W36/04
摘要： An object of the invention is to provide a wireless communication system in which the load of each cell and interference between cells are taken into account. In a handover-candidate base station and a handover-source base station, parameters for interference-reducing scheduling and handover facilitating processing are adjusted based on the mutual load information. When the handover-candidate base station, to be used for load balancing, is a large-diameter cell, transmit power control and frequency scheduling are adjusted by taking account of the load state at a cell edge. When the handover-source base station has a small-diameter cell, the number of terminals to be handed over is adjusted by taking account of the load state of the handover-candidate base station. Thus, both of interference control and load balancing are achieved.
摘要翻译：本发明的目的是提供一种无线通信系统，其中考虑每个小区的负载和小区之间的干扰。在切换候选基站和切换源基站中，基于相互负载信息来调整用于减少干扰的调度和切换促进处理的参数。当用于负载均衡的切换候选基站是大直径小区时，通过考虑小区边缘处的负载状态来调整发射功率控制和频率调度。当切换源基站具有小直径小区时，通过考虑切换候选基站的负载状态来调整要切换的终端的数量。因此，实现了干扰控制和负载均衡。

10. 发明授权

US07346330B2 Software-defined radio apparatus 失效
标题翻译：软件定义无线电设备
公开(公告)号：US07346330B2
公开(公告)日：2008-03-18
申请号：US11218484
申请日：2005-09-06
申请人： Manabu Kawabe , Katsuhiko Tsunehara , Hirotake Ishii , Takashi Ishikawa
发明人： Manabu Kawabe , Katsuhiko Tsunehara , Hirotake Ishii , Takashi Ishikawa
IPC分类号： H04M3/00
CPC分类号： H04B1/0003 , H04B1/40
摘要： To simplify the configuration of functional modules in a software-defined radio apparatus, and facilitate the development of software. The functional modules have input and output terminals of a common configuration. Distributed timing control is performed so that the functional modules operate in their respective timings, and the functional modules have common input/output signals.
摘要翻译：为了简化软件定义的无线电设备中的功能模块的配置，并且便于开发软件。功能模块具有通用配置的输入和输出端子。执行分布式定时控制，使得功能模块在其各自的定时中操作，并且功能模块具有公共的输入/输出信号。

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