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    • 61. 发明授权
    • Transmitting device, receiving device, and method used in mobile communication system employing OFDM
    • 使用OFDM的移动通信系统中使用的发送设备,接收设备和方法
    • US08265043B2
    • 2012-09-11
    • US12521208
    • 2007-12-27
    • Yoshihisa KishiyamaKenichi HiguchiMamoru Sawahashi
    • Yoshihisa KishiyamaKenichi HiguchiMamoru Sawahashi
    • H04J3/00
    • H04L27/2613H04L5/0044H04L5/0051H04L5/0058H04W52/325H04W52/346
    • A transmitting device includes a transmission signal generating unit configured to generate a transmission signal by inverse-Fourier-transforming reference signals and data signals mapped to subcarriers and a transmitting unit configured to wirelessly transmit the transmission signal. In the transmitting device, a total power level allocated to signals to be transmitted in a time slot is equal to a total power level allocated to signals to be transmitted in any other time slot, and a power density per unit bandwidth of the reference signals is greater than a power density per unit bandwidth of the data signals. This configuration makes it possible to equalize the total transmission power level of all time slots and thereby to improve the power amplification efficiency. Also, with this configuration, since the reference signals are transmitted with a higher power than that for other signals, it is possible to improve the accuracy of channel estimation.
    • 发送装置包括发送信号生成单元,被配置为通过对映射到子载波的参考信号和数据信号进行逆傅立叶变换来产生发送信号,以及发送单元,被配置为无线发送发送信号。 在发送装置中,分配给时隙中要发送的信号的总功率电平等于分配给在任何其他时隙中发送的信号的总功率电平,并且参考信号的每单位带宽的功率密度为 大于数据信号的每单位带宽的功率密度。 该配置使得可以使所有时隙的总发送功率电平均衡,从而提高功率放大效率。 此外,利用这种配置,由于以比其他信号更高的功率发送参考信号,因此可以提高信道估计的精度。
    • 64. 发明授权
    • Base station and communication system
    • 基站和通信系统
    • US07912030B2
    • 2011-03-22
    • US12064541
    • 2006-08-21
    • Teruo KawamuraYoshihisa KishiyamaKenichi HiguchiMamoru Sawahashi
    • Teruo KawamuraYoshihisa KishiyamaKenichi HiguchiMamoru Sawahashi
    • H04J13/00
    • H04J13/00H04J13/18H04L1/0003H04L5/0023H04L5/005H04L5/023H04W56/0045H04W72/04H04W92/10
    • A base station includes: a first reception timing detecting unit configured to detect a reception timing of a packet received from a first mobile station of multiple mobile stations which is situated in a first sector; a second reception timing detecting unit configured to detect a reception timing of a packet received from a second mobile station of the multiple mobile stations which is situated in a second sector; a transmission timing determining unit configured to determine transmission timings of signals transmitted from the first mobile station and the second mobile station based on the reception timings detected by the first reception timing detecting unit and the second reception timing detecting unit; a control information generating unit configured to generate transmission timing control information for the first mobile station and the second mobile station based on the transmission timings; and a radio resource allocating unit configured to allocate orthogonal radio resources to the first mobile station and the second mobile station.
    • 基站包括:第一接收定时检测单元,被配置为检测从位于第一扇区中的多个移动站的第一移动站接收的分组的接收定时; 第二接收定时检测单元,被配置为检测从位于第二扇区中的多个移动站的第二移动台接收的分组的接收定时; 发送定时确定单元,被配置为基于由所述第一接收定时检测单元和所述第二接收定时检测单元检测到的接收定时来确定从所述第一移动台和所述第二移动台发送的信号的发送定时; 控制信息生成单元,其基于所述发送定时生成所述第一移动台和所述第二移动台的发送定时控制信息; 以及无线资源分配单元,被配置为向所述第一移动站和所述第二移动站分配正交无线资源。
    • 66. 发明申请
    • RADIO BASE STATION USED IN MOBILE COMMUNICATION SYSTEM
    • 无线电台站用于移动通信系统
    • US20100118825A1
    • 2010-05-13
    • US12438113
    • 2007-08-13
    • Teruo KawamuraYoshihisa KishiyamaKenichi HiguchiMamoru Sawahashi
    • Teruo KawamuraYoshihisa KishiyamaKenichi HiguchiMamoru Sawahashi
    • H04W72/12
    • H04W72/1268H04L5/0007H04L5/0053H04L5/0091H04W72/04H04W72/1289
    • A disclosed radio base station is used in a mobile communication system employing a single carrier scheme for uplink and includes a scheduler configured to allocate radio resources such that a first control channel accompanying an uplink data channel is transmitted using the same frequency band allocated to the uplink data channel and a second control channel, which is to be transmitted regardless of presence or absence of the uplink data channel, is transmitted using a dedicated frequency band reserved for the second control channel if no frequency band is allocated to the uplink data channel; and a reporting unit configured to report scheduling information indicating the allocation results to a user device. The scheduler is configured not to allocate the radio resources to the uplink data channel of the user device in a unit transmission period reserved for transmission of the second control channel of the user device.
    • 所公开的无线电基站用于采用用于上行链路的单载波方案的移动通信系统,并且包括调度器,其被配置为分配无线电资源,使得使用分配给上行链路的相同频带来发送伴随上行链路数据信道的第一控制信道 如果没有频带被分配给上行链路数据信道,则使用为第二控制信道预留的专用频带来发送数据信道和第二控制信道,无论存在或不存在上行链路数据信道,都将发送第二控制信道; 以及报告单元,被配置为将指示分配结果的调度信息报告给用户设备。 调度器被配置为在为用户设备的第二控制信道的传输保留的单元发送周期中不将无线电资源分配给用户设备的上行链路数据信道。