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    • 1. 发明授权
    • Wireless base station, mobile station, radio communication system, and radio communication method
    • 无线基站,移动台,无线通信系统,无线通信方式
    • US07961677B2
    • 2011-06-14
    • US12062111
    • 2008-04-03
    • Hideaki TakahashiNoriyuki MaedaShunji MiuraHiromitsu Asakura
    • Hideaki TakahashiNoriyuki MaedaShunji MiuraHiromitsu Asakura
    • H04W4/00H04W72/00H04B7/208H04L12/56H03D1/04
    • H04L5/0053H04L5/0007H04L5/0037H04L5/0048H04L5/0058
    • The object of the present invention is to achieve reduction of interference between cells and improvement of maximum throughput so as to improve spectrum efficiency. A wireless base station which transmits a radio signal between itself and a plurality of mobile stations by means of OFDMA includes: a multiplexing part for generating user data; a channel assignment control part for selecting a plurality sets of sub-carriers among a plurality of sub-carriers so as to constitute a radio frame containing sub-channels assigned to each of the plurality sets of sub-carriers and for setting in the radio frame the user data and control data by means of orthogonal frequency division multiplexing; and a transmission part for transmitting a radio signal containing the radio frame; where, the channel assignment control part is constituted so that the radio frame is divided into 2 zones for the control and user data and all the sub-channels in the zone for control data are divided into groups for each of sectors; the control data is allocated on the corresponding divided groups; and the user data is allocated on all the sub-channels in the zone for user data.
    • 本发明的目的是实现小区之间的干扰减少和最大吞吐量的提高,从而提高频谱效率。 一种通过OFDMA在其自身与多个移动台之间发送无线电信号的无线基站包括:用于生成用户数据的复用部分; 信道分配控制部分,用于在多个子载波中选择多个子载波组,以构成包含分配给多个副载波中的每一个子载波的子信道的无线电帧,并用于在无线帧中进行设置 用户数据和控制数据通过正交频分复用; 以及发送部,用于发送包含无线帧的无线信号; 其中,信道分配控制部分被构成为使得无线电帧被划分为用于控制的用户数据和用户数据的2个区域,并且用于控制数据的区域中的所有子信道被划分为每个扇区的组; 控制数据分配在相应的分组上; 并且用户数据被分配在用于用户数据的区域中的所有子信道上。
    • 2. 发明申请
    • WIRELESS BASE STATION, MOBILE STATION, RADIO COMMUNICATION SYSTEM, AND RADIO COMMUNICATION METHOD
    • 无线基站,移动站,无线电通信系统和无线电通信方法
    • US20080247356A1
    • 2008-10-09
    • US12062111
    • 2008-04-03
    • Hideaki TAKAHASHINoriyuki MaedaShunji MiuraHiromitsu Asakura
    • Hideaki TAKAHASHINoriyuki MaedaShunji MiuraHiromitsu Asakura
    • H04Q7/00
    • H04L5/0053H04L5/0007H04L5/0037H04L5/0048H04L5/0058
    • The object of the present invention is to achieve reduction of interference between cells and improvement of maximum throughput so as to improve spectrum efficiency. A wireless base station which transmits a radio signal between itself and a plurality of mobile stations by means of OFDMA includes: a multiplexing part for generating user data; a channel assignment control part for selecting a plurality sets of sub-carriers among a plurality of sub-carriers so as to constitute a radio frame containing sub-channels assigned to each of the plurality sets of sub-carriers and for setting in the radio frame the user data and control data by means of orthogonal frequency division multiplexing; and a transmission part for transmitting a radio signal containing the radio frame; where, the channel assignment control part is constituted so that the radio frame is divided into 2 zones for the control and user data and all the sub-channels in the zone for control data are divided into groups for each of sectors; the control data is allocated on the corresponding divided groups; and the user data is allocated on all the sub-channels in the zone for user data.
    • 本发明的目的是实现小区之间的干扰减少和最大吞吐量的提高,从而提高频谱效率。 一种通过OFDMA在其自身与多个移动台之间发送无线电信号的无线基站包括:用于生成用户数据的复用部分; 信道分配控制部分,用于在多个子载波中选择多个子载波组,以构成包含分配给多个副载波中的每一个子载波的子信道的无线电帧,并用于在无线帧中进行设置 用户数据和控制数据通过正交频分复用; 以及发送部,用于发送包含无线帧的无线信号; 其中,信道分配控制部分被构成为使得无线电帧被划分为用于控制的用户数据和用户数据的2个区域,并且用于控制数据的区域中的所有子信道被划分为每个扇区的组; 控制数据分配在相应的分组上; 并且用户数据被分配在用于用户数据的区域中的所有子信道上。
    • 7. 发明授权
    • Wireless station, interference avoidance method, and system for interference avoidance
    • 无线站,干扰避免方法,以及避免干扰的系统
    • US08948068B2
    • 2015-02-03
    • US13350079
    • 2012-01-13
    • Hiroki HaradaHiromasa FujiiShunji MiuraHidetoshi Kayama
    • Hiroki HaradaHiromasa FujiiShunji MiuraHidetoshi Kayama
    • H04W72/04H04W72/08H04W16/14H04W72/12
    • H04W72/082H04W16/14H04W72/0406H04W72/085H04W72/1215
    • A wireless station in a second communication system, with at least a portion of a first frequency band used in a first communication system and a portion of a second frequency band used in the second communication system being shared or neighboring, the wireless station including a waveform characteristic quantity extracting unit that extracts a waveform characteristic quantity which shows a statistical characteristic of a signal received from the first communication system; a communication parameter determining unit that determines communication parameters to be used for the wireless station in the second communication system depending on a determination result of whether the extracted waveform characteristic quantity is of a predetermined waveform characteristic quantity for reducing an interference; and a transmission and reception unit that transmits and receives a wireless communication signal in the second communication system in accordance with the determined communication parameters.
    • 第二通信系统中的无线站,其中在第一通信系统中使用的第一频带的至少一部分和在第二通信系统中使用的第二频带的一部分是共享的或相邻的,所述无线站包括波形 特征量提取单元,其提取表示从第一通信系统接收的信号的统计特性的波形特征量; 通信参数确定单元,根据所提取的波形特征量是否是用于减少干扰的预定波形特征量的确定结果,确定第二通信系统中用于无线站的通信参数; 以及发送和接收单元,其根据确定的通信参数在第二通信系统中发送和接收无线通信信号。
    • 8. 发明授权
    • Radio communication method and radio base station
    • 无线电通信方式和无线基站
    • US08521174B2
    • 2013-08-27
    • US13332909
    • 2011-12-21
    • Hiromasa FujiiHiroto YasudaHiroki HaradaShunji MiuraTomoyuki Ohya
    • Hiromasa FujiiHiroto YasudaHiroki HaradaShunji MiuraTomoyuki Ohya
    • H04W88/02
    • H04W72/0406H04W16/32H04W92/20
    • When a frequency band is shared between a large cell system having a large cell base station and a small cell system having a small cell base station, the large cell base station dynamically controls dedicated resources for the large cell base station and shared resources for both the large cell base station and the small cell base station based on predetermined information, broadcasts allocation information of dedicated resources for the large cell base station and shared resources for both the large cell base station and the small cell base station, to the small cell base station belonging to the own cell, and the small cell base station belongs to at least one large cell base station and determines resource assignment in the own cell based on the resource allocation information broadcast from the large cell base station.
    • 当在具有大小区基站的大小区系统与具有小小区基站的小小区系统之间共享频带时,大小区基站动态地控制大小区基站的专用资源和用于两者的共享资源 基于预定信息的大小区基站和小小区基站,向大小区基站广播用于大小区基站的专用资源的分配信息以及大小区基站和小小区基站的共享资源到小小区基站 属于自己的小区,小小区基站属于至少一个大小区基站,并且基于从大小区基站广播的资源分配信息来确定自身小区中的资源分配。
    • 10. 发明授权
    • Signal detection apparatus and signal detection method
    • 信号检测装置及信号检测方法
    • US08706045B2
    • 2014-04-22
    • US13272573
    • 2011-10-13
    • Hiroki HaradaHiromasa FujiiShunji Miura
    • Hiroki HaradaHiromasa FujiiShunji Miura
    • H04B17/00
    • H04L27/0006H04L5/0007H04L5/0032
    • A signal detection apparatus includes: a unit configured to select a particular detection target signal from among plural candidates of detection target signals; a unit configured to calculate a cyclic autocorrelation value at a center coordinate point specified by at least a cyclic parameter and a shift parameter of the particular detection target signal; a unit configured to calculate a cyclic autocorrelation value of each of (L−1) coordinate points belonging to a common area that is used commonly for different detection target signals; a unit configured to calculate a test statistic of the particular detection target signal; and a unit configured to determine presence or absence of the particular detection target signal according to a comparison result between the test statistic and a threshold, wherein the test statistic is calculated by using the cyclic autocorrelation value in each of the (L−1) coordinate points belonging to the common area.
    • 信号检测装置包括:被配置为从多个检测目标信号候选中选择特定检测目标信号的单元; 被配置为计算由所述特定检测目标信号的至少循环参数和移位参数指定的中心坐标点处的循环自相关值; 被配置为计算属于共同区域的(L-1)个坐标点中的每一个的循环自相关值的单元,所述公共区域被共同用于不同的检测目标信号; 被配置为计算特定检测目标信号的检验统计量的单元; 以及单元,被配置为根据测试统计量和阈值之间的比较结果来确定特定检测目标信号的存在或不存在,其中通过使用(L-1)坐标中的每一个中的循环自相关值来计算测试统计量 点属于公共区域。