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    • 44. 发明申请
    • RADIO COMMUNICATION MOBILE STATION APPARATUS AND RADIO COMMUNICATION METHOD
    • 无线电通信移动站装置和无线电通信方法
    • US20090161650A1
    • 2009-06-25
    • US12293530
    • 2007-03-20
    • Daichi ImamuraSadaki FutagiAtsushi MatsumotoTakashi IwaiTomohumi Takata
    • Daichi ImamuraSadaki FutagiAtsushi MatsumotoTakashi IwaiTomohumi Takata
    • H04B7/216
    • H04W74/0833H04J13/0059H04J13/0066H04J13/16H04J13/22H04L5/0091H04W72/042
    • Provided is a mobile station capable of effectively reporting control information in RACH. In the mobile station, a signature selection unit (111) selects one of different code sequences as a signature according to inputted control information and a modulation unit (112) modulates a signature (code sequence). In a table provided in the signature selection unit (111), for control information ‘000’, CAZAC sequence #1 as a basic code sequence and a derived code sequence of shifts 0 to 7 derived from the CAZAC sequence #1 are set while being correlated to each other. The derived code sequence of shifts 0 to 7 of the CAZAC sequence #1 respectively correspond to signatures #1 to #8. Moreover, for control information ‘001’, CAZAC sequence #2 as a basic code sequence and a derived code sequence of shifts 0 to 7 derived from CAZAC sequence #2 are set while being correlated to each other. The derived code sequence of shifts 0 to 7 of the CAZAC sequence #2 respectively correspond to the signatures #9 to #16.
    • 提供能够有效地报告RACH中的控制信息的移动站。 在移动站中,签名选择部(111)根据输入的控制信息选择不同的代码序列之一作为签名,调制部(112)调制签名(代码序列)。 在签名选择部(111)中设置的表中,对于控制信息'000',作为基本代码序列的CAZAC序列#1和从CAZAC序列#1导出的移位0〜7的导出代码序列被设定为 相互关联。 CAZAC序列#1的移位0到7的导出代码序列分别对应于签名#1到#8。 此外,对于控制信息“001”,作为基本代码序列的CAZAC序列#2和从CAZAC序列#2导出的移位0〜7的导出代码序列被设定为彼此相关。 CAZAC序列#2的移位0到7的导出代码序列分别对应于签名#9至#16。
    • 46. 发明申请
    • WIRELESS COMMUNICATION METHOD, BASE STATION APPARATUS AND MOBILE STATION APPARATUS
    • 无线通信方法,基站装置和移动站装置
    • US20090046604A1
    • 2009-02-19
    • US11813582
    • 2006-01-11
    • Atsushi MatsumotoSadaki FutagiKenichi MiyoshiDaichi ImamuraAkihiko Nishio
    • Atsushi MatsumotoSadaki FutagiKenichi MiyoshiDaichi ImamuraAkihiko Nishio
    • H04J3/00H04L7/00
    • H04L5/1469H04L5/023H04L27/2646H04L27/2655
    • A wireless communication method for improving the transmission efficiency in an upstream communication in OFDMA-TDD system or the like. An upstream transmission timing control part (108), which employs this method, controls, based on the OFDMA-TDD scheme, the transmission timings of a mobile station (#p) and a mobile station (#M) communicating with a base station (100). The upstream transmission timing control part (108) acquires information about the propagation delay times τp and τM of the mobile station (#p) and mobile station (#M). When the propagation delay time τp is shorter than the propagation delay time τM, the upstream transmission timing control part (108) decides the transmission timings of the mobile station (#p) and mobile station (#M) such that the timing at which the base station (100) starts receiving symbols from the mobile station (#p) in an upstream section is earlier, by αp times an OFDM symbol length (L) (where αp is a natural number), than the timing at which the base station (100) starts receiving symbols from the mobile station (#M) in the same section.
    • 一种用于在OFDMA-TDD系统中提高上行通信中的传输效率的无线通信方法等。 使用该方法的上行发送定时控制部(108)基于OFDMA-TDD方式,控制与基站通信的移动台(#p)和移动台(#M)的发送定时 100)。 上游发送定时控制部(108)获取关于移动台(#p)和移动台(#M)的传播延迟时间taup和tauM的信息。 当传播延迟时间taup比传播延迟时间ττ短时,上游发送定时控制部(108)决定移动台(#p)和移动台(#M)的发送定时, 基站(100)开始在上游部分中从移动站(#p)开始接收符号的时间早于基站的时间(alphap是自然数) (100)开始从同一部分的移动台(#M)接收符号。