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    • 42. 发明申请
    • RADIO TRANSMITTING APPARATUS AND RADIO TRANSMITTING METHOD
    • 无线电发射装置和无线电发射方法
    • US20100002671A1
    • 2010-01-07
    • US12376002
    • 2007-08-02
    • Takashi IwaiSadaki FutagiDaichi ImamuraAtsushi MatsumotoYoshihiko Ogawa
    • Takashi IwaiSadaki FutagiDaichi ImamuraAtsushi MatsumotoYoshihiko Ogawa
    • H04B7/216
    • H04W56/005H04J13/0074H04J13/10H04W8/26H04W74/0866
    • A radio transmitting apparatus and a radio transmitting method wherein the interference between codes can be reduced and the degradation of preamble detection capability can be prevented. According to these apparatus and method, a signature table storing part (103) that stores a table including a plurality of signatures obtained by classifying the magnitudes of propagation loss levels into levels in accordance with the distances from a base station, associating preamble detection window widths with those levels as classified, and by circularly shifting the pattern of a detection window signature #n corresponding to a signature #n to generate a signature #n+1. A signature selecting part (104) selects, based on the magnitude of a propagation loss level outputted by a propagation loss level determining part (102), one of the corresponding signatures from the signature table storing part (103) at random. A RACH signal generating part (105) uses the selected signature to generate a RACH signal.
    • 一种无线电发送装置和无线电发送方法,其中可以减少代码之间的干扰,并且可以防止前导码检测能力的劣化。 根据这些装置和方法,一种签名表存储部分(103),其存储包括根据与基站的距离将传播损耗级别的大小分级为等级而获得的多个签名的表,将前同步码检测窗宽度 通过循环移位与签名#n对应的检测窗签名#n的图案,生成签名#n + 1。 签名选择部(104)基于由传播损耗等级确定部(102)输出的传播损耗等级的大小,从签名表存储部(103)中随机选择一个对应的签名。 RACH信号生成部(105)使用所选择的签名来生成RACH信号。
    • 48. 发明申请
    • RADIO TRANSMISSION DEVICE AND RADIO COMMUNICATION METHOD
    • 无线传输设备和无线电通信方法
    • US20110075760A1
    • 2011-03-31
    • US12672256
    • 2008-08-07
    • Yoshihiko OgawaDaichi ImamuraTakashi IwaiKatsuhiko HiramatsuTomofumi TakataAtsushi Matsumoto
    • Yoshihiko OgawaDaichi ImamuraTakashi IwaiKatsuhiko HiramatsuTomofumi TakataAtsushi Matsumoto
    • H04L25/49
    • H04W72/0453H04J1/02H04J13/0055H04J13/22
    • It is possible to provide a radio transmission device and a radio communication method which can reduce inter-sequence interference and reduce the circuit size and the calculation amount even when RS is transmitted with different transmission bandwidths. Sequence length decision units (105) and (164) hold a correspondence in which one basic sequence length is set for a plurality of transmission bandwidths. The sequence length decision units (105) and (164) acquire transmission bandwidth information and decide a sequence length corresponding to the acquired transmission bandwidth information. Here, it is decided which of the cyclic extension process or the transaction process is to be executed on a ZC sequence according to the sizes of the acquired transmission bandwidth information and the basic sequence length. Then, a difference between the transmission bandwidth and the basic sequence length, i.e., the number of possible cyclic extension/truncation symbols is obtained.
    • 即使在以不同的发送带宽发送RS的情况下,也能够提供能够减少序列间干扰并减小电路尺寸和计算量的无线发送装置和无线通信方法。 顺序长度决定单元(105)和(164)保持对多个传输带宽设置一个基本序列长度的对应关系。 序列长度决定单元(105)和(164)获取传输带宽信息并确定与获取的传输带宽信息相对应的序列长度。 这里,根据获取的传输带宽信息和基本序列长度的大小,确定在ZC序列上执行循环扩展处理或事务处理中的哪一个。 然后,获得传输带宽和基本序列长度之间的差异,即可能的循环扩展/截断符号的数量。