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    • 51. 发明授权
    • Retransmission control scheme and wireless communication apparatus
    • 重传控制方案和无线通信装置
    • US08065579B2
    • 2011-11-22
    • US11816885
    • 2006-02-27
    • Masayuki HoshinoRyohei KimuraYasuaki YudaTomohiro ImaiKenichi Miyoshi
    • Masayuki HoshinoRyohei KimuraYasuaki YudaTomohiro ImaiKenichi Miyoshi
    • G08C25/02H04L1/18
    • H04L1/1893H04L1/0001H04L1/0013H04L1/0015H04L1/0026H04L1/0071H04L1/06H04L1/1819H04L1/1825H04L1/1845H04L25/0222
    • A retransmission control scheme and a wireless communication apparatus wherein the efficiency of retransmission control is enhanced to further improve the system throughput. In this wireless communication apparatus (100), an error occurrence factor addressing part (140) receives information related to the error occurrence factor of a transmitted packet or information related to the schemes of forming or transmitting a retransmittal packet corresponding to that error occurrence factor, and switches, based on the received information, the schemes of forming or transmitting the retransmittal packet. In this way, the schemes of forming or transmitting the retransmittal packet can be switched in accordance with the error occurrence factor of the transmitted packet. At the end of receiving the retransmittal packet, therefore, the performing of a decoding processor the like in accordance with that scheme of forming or transmitting can enhance the efficiency of the retransmission control. As a result, the system throughput can be improved.
    • 一种重传控制方案和一种无线通信装置,其中提高了重传控制的效率以进一步提高系统吞吐量。 在该无线通信装置(100)中,错误发生因子寻址部(140)接收与所发送的分组的错误发生因子相关的信息或与形成或发送对应于该错误发生因子的重传分组的方案有关的信息, 并且基于所接收的信息来切换形成或发送重传分组的方案。 以这种方式,可以根据发送的分组的错误发生因素来切换形成或发送重传分组的方案。 因此,在接收到重传分组的结束时,根据该形成或发送方案执行解码处理器等可以提高重传控制的效率。 结果,可以提高系统吞吐量。
    • 55. 发明申请
    • Wireless Communication Apparatus and Wireless Communication Method
    • 无线通信装置和无线通信方法
    • US20080304658A1
    • 2008-12-11
    • US11658256
    • 2005-07-07
    • Yasuaki YudaTomohiro ImaiKenichi Miyoshi
    • Yasuaki YudaTomohiro ImaiKenichi Miyoshi
    • H04L9/06
    • H04L63/06H04B7/043H04L9/0875H04L2209/34H04L2209/80H04L2463/061
    • An inventive wireless communication apparatus that, in a wireless communication system to which a secret key scheme is applied, can generate a secret key, which is different from a secret key generated by a third party, even if a wireless signal is intercepted by the third part having an approximate propagation path environment to a receiving wireless communication apparatus. In the inventive apparatus, an eigenvalue selecting part (317) of a secret key generating part (207) selects a maximum one of MIMO channel eigenvalues received from an eigenvalue detecting part (206) and inputs the selected maximum eigenvalue to a quantizing part (327). The quantizing part (327) quantizes the magnitude of the maximum eigenvalue received from the eigenvalue selecting part (317) to produce and input a quantized data to a key generating part (337). The key generating part (337) uses a predetermined scheme to generate a secret key from the quantized data received from the quantizing part (327), and inputs the generated secret key to a control part or the like not shown.
    • 一种创造性的无线通信装置,在应用了秘密密钥方案的无线通信系统中,即使无线信号被第三方拦截,也可以生成与第三方生成的秘密密钥不同的秘密密钥 部分具有到接收无线通信装置的近似传播路径环境。 在本发明的装置中,秘密密钥生成部(207)的特征值选择部(317)选择从特征值检测部(206)接收到的最大一个MIMO信道特征值,并将所选择的最大特征值输入到量化部(327 )。 量化部分(327)量化从特征值选择部分(317)接收的最大特征值的幅度,以产生量化数据并将其输入到密钥产生部分(337)。 密钥产生部分(337)使用预定方案从量化部分(327)接收到的量化数据生成秘密密钥,并将生成的秘密密钥输入到未示出的控制部分等。
    • 56. 发明申请
    • TRANSMITTING APPARATUS, RECEIVING APPARATUS AND TRANSMISSION POWER CONTROL METHOD
    • 发射装置,接收装置和传输功率控制方法
    • US20090227211A1
    • 2009-09-10
    • US11915724
    • 2006-05-30
    • Masayuki HoshinoRyohei KimuraYasuaki YudaTomohiro ImaiKenichi Miyoshi
    • Masayuki HoshinoRyohei KimuraYasuaki YudaTomohiro ImaiKenichi Miyoshi
    • H04B7/00H04B1/04
    • H04W52/247H04W52/262
    • A transmitting apparatus, a receiving apparatus and a transmission power control method wherein even in a case of performing a transmission power control of multi-valued modulated symbols, the degradation of reception characteristic and that of network usage efficiency can be avoided. A power control instructing part (204) adjusts, based on an encoding rate and a modulation scheme in a case of applying a power control value, which maximizes the MIMO channel capacity, to each stream, the power control value of a stream, which is the most likely to be affected by a power estimation error, into a reference value, and then applies the adjustment value used for that adjustment to the other streams, that is, the streams that are not likely to be affected by the power estimation error. A power control part (205) performs a transmission power control in accordance with the power control value as adjusted by the power control instructing part (204).
    • 一种发送装置,接收装置和发送功率控制方法,其中即使在执行多值调制符号的发送功率控制的情况下,也可以避免接收特性的劣化和网络使用效率的劣化。 功率控制指示部(204)根据编码率和调制方式,对每个流施加使MIMO信道容量最大化的功率控制值,将流的功率控制值,即 最有可能受功率估计误差影响的参考值,然后将用于该调整的调整值应用于其他流,即不太可能受功率估计误差影响的流。 功率控制部(205)根据由功率控制指示部(204)调节的功率控制值进行发送功率控制。
    • 57. 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。
    • 58. 发明申请
    • Multicarrier Communication Apparatus and Multicarrier Communication Method
    • 多载波通信装置和多载波通信方法
    • US20070263736A1
    • 2007-11-15
    • US11576039
    • 2005-09-26
    • Yasuaki YudaTomohiro ImaiKenichi Miyoshi
    • Yasuaki YudaTomohiro ImaiKenichi Miyoshi
    • H04L27/28
    • H04L27/2626H04B7/0615H04L27/2647
    • A multicarrier communication apparatus and the like wherein the arithmetic amount required for calculating a reception weight by which a multicarrier signal is to be multiplied is suppressed, while the reception characteristic for the multicarrier signal is improved. In the apparatus, a subcarrier transmission weight generating part (513) generates a transmission weight of each subcarrier, based on channel information of each subcarrier received froma channel information generating part (511) and a reception weight of each subcarrier group received from a subcarrier group reception weight generating part (512). The subcarrier transmission weight generating part (513) inputs the generated transmission weights of the respective subcarriers to the corresponding ones of multipliers (522).
    • 在多载波信号的接收特性提高的情况下,抑制用于计算要乘以多载波信号的接收权重所需的算术量的多载波通信装置等。 在该装置中,子载波发送权重生成部(513)根据从信道信息生成部(511)接收到的各副载波的信道信息和从副载波组接收到的各子载波组的接收权重,生成各副载波的发送权重 接收重量产生部分(512)。 子载波传输权重产生部分(513)将生成的各个子载波的传输权重输入到相应的乘法器(522)。