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    • 42. 发明申请
    • RADIO COMMUNICATION SYSTEM, RADIO COMMUNICATION DEVICE, AND CHANNEL CORRELATION MATRIX DECISION METHOD
    • 无线电通信系统,无线电通信设备和信道相关矩阵决策方法
    • US20090185634A1
    • 2009-07-23
    • US12280677
    • 2007-02-28
    • Masayuki HoshinoKenichi MiyoshiYasuaki YudaKatsuhiko HiramatsuRyohei Kimura
    • Masayuki HoshinoKenichi MiyoshiYasuaki YudaKatsuhiko HiramatsuRyohei Kimura
    • H04B7/02H04L27/06
    • H04B7/0626H04B7/0417H04B7/0434H04B7/063H04B7/0689
    • It is possible to prevent lowering of a throughput of a radio communication system even when propagation path environments of an uplink line and downlink line are asymmetric. A maximum proper value calculation unit (115) calculates a maximum proper value from a channel matrix. A maximum proper value comparison unit (116) compares the maximum proper value with a maximum proper value of the downlink line reported separately from a base station. According to the comparison result obtained by the maximum proper value comparison unit (116), a proper mode initiative instruction unit (117) decides to pass the proper mode initiative to a communication partner or to the local device. When the initiative is to be passed to the local device, this fact is reported to a proper bam correction unit (118). When the proper beam correction unit (118) gets the proper mode initiative, the proper beam correction unit (118) corrects the correlation matrix by using the proper values of both of the downlink line and the uplink line and instructs a directivity forming unit (103) to form a proper beam according to the correlation matrix after the correction.
    • 即使上行链路和下行链路的传播路径环境不对称,也可以防止无线通信系统的吞吐量的降低。 最大适当值计算单元(115)从信道矩阵计算最大适当值。 最大适当值比较单元(116)将最大适当值与从基站分开报告的下行线路的最大适当值进行比较。 根据由最大适当值比较单元(116)获得的比较结果,正确的模式主动指示单元(117)决定将适当的模式主动通过通信对方或本地设备。 当该举措传递给本地设备时,这一事实报告给适当的巴姆纠正单位(118)。 当正确的光束校正单元(118)获得适当的模式主动时,适当的光束校正单元(118)通过使用下行链路线路和上行链路线路的适当值来校正相关矩阵,并且指示方向性形成单元(103 )根据校正后的相关矩阵形成适当的波束。
    • 43. 发明授权
    • Communication terminal apparatus and base station apparatus
    • 通信终端装置和基站装置
    • US07460880B2
    • 2008-12-02
    • US11341430
    • 2006-01-30
    • Kenichi MiyoshiTakahisa AoyamaToyoki UeOsamu KatoKatsuhiko HiramatsuAtsushi Sumasu
    • Kenichi MiyoshiTakahisa AoyamaToyoki UeOsamu KatoKatsuhiko HiramatsuAtsushi Sumasu
    • H04B7/00
    • H04W52/265H04W52/24H04W52/241H04W52/246H04W52/262H04W52/267H04W52/367
    • An allocation section 101 in a base station apparatus of the present invention sets the transmission rate of a transmit signal for a communication terminal apparatus based on a DRC signal transmitted from that communication terminal apparatus. A power margin information detector 117 detects power margin information from a demodulated signal generated by a demodulator 115, and, using that power margin information, a power setting section 118 makes a setting so as to give the minimum transmission power value at which received signal characteristics in each communication terminal apparatus meet the desired quality. Using the set transmission power value, the base station apparatus transmits a transmit signal of the set transmission rate to a communication terminal apparatus. By this means it is possible to suppress interference to a communication terminal apparatus that performs adaptive modulation communication with another base station apparatus and a communication terminal apparatus that performs adaptive modulation communication with the local base station apparatus at the same time.
    • 本发明的基站装置中的分配部101基于从该通信终端装置发送的DRC信号来设定通信终端装置的发送信号的发送速度。 功率余量信息检测器117从解调器115产生的解调信号中检测功率余量信息,并且使用该功率余量信息,功率设定部118进行设定,以便给出接收信号特性 在每个通信终端设备中满足期望的质量。 使用设定的发送功率值,基站装置向通信终端装置发送所设定的发送速率的发送信号。 通过这种方式,可以抑制对与本地基站装置同时执行自适应调制通信的另一基站装置和通信终端装置进行自适应调制通信的通信终端装置的干扰。
    • 45. 发明授权
    • Relay station, mobile station, and relay transmission method in mobile communication system
    • 移动通信系统中的中继站,移动台和中继传输方式
    • US08265551B2
    • 2012-09-11
    • US12669148
    • 2008-07-18
    • Yoshiko SaitoTakashi AramakiKenichi MiyoshiKatsuhiko HiramatsuHidetoshi SuzukiJun Hirano
    • Yoshiko SaitoTakashi AramakiKenichi MiyoshiKatsuhiko HiramatsuHidetoshi SuzukiJun Hirano
    • H04Q7/20
    • H04W16/26H04B7/15507H04W16/24H04W48/08H04W84/047
    • Provided is a mobile communication system which includes a plurality of RAT (Radio Access Technology) and can eliminate the need of a control channel for reporting RAT information so as to prevent congestion or shortage of the control channel capacity. In the mobile communication system, an LTE relay station (30) has a cover area (31) identical to a cover area (21) owned by a WLAN host station (20) and relays/transmits the signal received from an LTE base station (10) to a mobile station (40) in the cover area (31). The LTE relay station (30) adds to the signal received from the LTE base station (10), one of the offsets: a frequency offset, a time offset, and a power offset as information indicating that the mobile station (40) which receives a relay signal from the local station is located in the cover area (21) of WLAN and transmits the signal after offset addition to the mobile station (40) located in the cover area (31) (i.e., the cover area (21)).
    • 提供了包括多个RAT(无线电接入技术)的移动通信系统,并且可以消除用于报告RAT信息的控制信道的需要,以防止控制信道容量的拥塞或不足。 在移动通信系统中,LTE中继站(30)具有与WLAN主站(20)拥有的覆盖区域(21)相同的覆盖区域(31),并且中继/发送从LTE基站接收的信号 10)到覆盖区域(31)中的移动站(40)。 LTE中继站(30)将从LTE基站(10)接收到的信号中的一个相加,作为指示接收到的移动站(40)的信息的偏移中的一个:频率偏移,时间偏移和功率偏移 来自本地站的中继信号位于WLAN的覆盖区域(21)中,并且将偏移相加后的信号发送到位于覆盖区域(31)(即,覆盖区域(21))中的移动站(40) 。
    • 48. 发明授权
    • Radio base station apparatus and communication terminal
    • 无线基站装置和通信终端
    • US07298692B2
    • 2007-11-20
    • US10312870
    • 2002-05-13
    • Katsuhiko HiramatsuKenichi MiyoshiAtsushi Sumasu
    • Katsuhiko HiramatsuKenichi MiyoshiAtsushi Sumasu
    • H04J11/00
    • H04L27/2607H04B1/692H04L5/026H04L5/1484H04L25/0216H04L27/2605H04L27/364
    • MS receives a downlink signal transmitted based on a guard interval determined using a delay profile with high accuracy generated based on a CDMA uplink signal, and performs Fourier Transform processing on a preamble portion of the downlink signal to demodulate. Transmission parameters (guard interval, subcarrier frequency interval and the number of subcarriers) contained in the preamble portion are extracted and output to Fourier Transform section 303. The section 303 performs Fourier Transform processing on a data portion based on the extracted transmission parameters. Demodulation section 304 demodulates signals subjected to the Fourier Transform processing to output as received data. It is thereby possible to generate the delay profile with high accuracy to determine the guard interval, and to ensure transmission quality while improving the spectral efficiency.
    • MS接收基于使用基于CDMA上行链路信号生成的具有高精度的延迟分布确定的保护间隔发送的下行链路信号,并对下行链路信号的前导部分执行傅立叶变换处理以进行解调。 包含在前置码部分中的传输参数(保护间隔,子载波频率间隔和子载波数)被提取并被输出到傅里叶变换部分303。 部分303基于提取的传输参数对数据部分执行付里叶变换处理。 解调部分304解调经过傅里叶变换处理的信号作为接收数据输出。 从而可以高精度地产生延迟分布,以确定保护间隔,并且在提高频谱效率的同时确保传输质量。