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1. 发明授权

US08660227B2 Radio communication system, receiver, and transmitter 有权
标题翻译：无线电通信系统，接收机和发射机
公开(公告)号：US08660227B2
公开(公告)日：2014-02-25
申请号：US12737629
申请日：2009-07-30
申请人： Fumio Suzuki , Shoji Hatano , Noritoshi Hino , Masahito Taneda , Yoshimisa Kimura , Koichi Moriya
发明人： Fumio Suzuki , Shoji Hatano , Noritoshi Hino , Masahito Taneda , Yoshimisa Kimura , Koichi Moriya
IPC分类号： H04L7/00
CPC分类号： H04W56/00 , H04L7/10 , H04W52/0229 , Y02D70/00
摘要： A radio communication system has a transmitter and a receiver that transmits and receives, respectively, synchronization signals. The transmitter has a multiple-synchronization-signal generation section configured to generate the synchronization signals, a radio circuit configured to transmit the synchronization signals in a predetermined transmission cycle from a start time of the predetermined transmission cycle and with an interval shorter than the predetermined transmission cycle, and a synchronization signal sequence number generation section configured to assign a sequence number to each of the synchronization signals. The receiver has a synchronization signal detection section configured to detect any one of the synchronization signals transmitted by the transmitter, and has a clock error correction section configured to correct an error of a reference clock based on the sequence number assigned by the synchronization signal sequence number generation section to the synchronization signal detected by the synchronization signal detection section.
摘要翻译：无线电通信系统具有分别发送和接收同步信号的发射机和接收机。发射机具有多个同步信号产生部分，被配置为产生同步信号，无线电电路被配置为从预定传输周期的开始时间以预定传输周期发射同步信号，并且间隔小于预定传输以及同步信号序列号生成部，被配置为向每个同步信号分配序列号。接收机具有同步信号检测部，其被配置为检测由发送器发送的同步信号中的任一个，并且具有时钟误差校正部，被配置为基于由同步信号序列号分配的序列号校正参考时钟的误差由同步信号检测部检测到的同步信号。

2. 发明申请

US20110182371A1 RADIO COMMUNICATION SYSTEM, RECEIVER, AND TRANSMITTER 有权
标题翻译：无线电通信系统，接收机和发射机
公开(公告)号：US20110182371A1
公开(公告)日：2011-07-28
申请号：US12737629
申请日：2009-07-30
申请人： Fumio Suzuki , Shoji Hatano , Noritoshi Hino , Masahito Taneda , Yoshimisa Kimura , Koichi Moriya
发明人： Fumio Suzuki , Shoji Hatano , Noritoshi Hino , Masahito Taneda , Yoshimisa Kimura , Koichi Moriya
IPC分类号： H04L27/00
CPC分类号： H04W56/00 , H04L7/10 , H04W52/0229 , Y02D70/00
摘要： Provided are a radio communication system, a receiver, and a transmitter, which are capable of reducing an operation time period of a reception circuit of the receiver and achieving reduction in power consumption even if there is a clock error between the transmitter and the receiver. In a case of a conventional method illustrated in FIG. 1(A), the receiver is operated earlier by a time period (Tm), to thereby achieve synchronization before the clock error of the receiver exceeds the time period (Tm). This requires an extended reception time period for achieving clock synchronization, which therefore prevents the receiver from reducing its power consumption. In view of this, according to the present invention, as illustrated in FIG. 1(B), a synchronization signal is continuously transmitted from the transmitter a plurality of times in a short period of time, and the receiver receives only one of the continuously-transmitted synchronization signals. With this, the receiver can achieve synchronization of a reference clock by starting a reception operation earlier only by a time period (Tm′) (Tm′≦Tm).
摘要翻译：提供一种无线电通信系统，接收机和发射机，其能够减少接收机的接收电路的操作时间段，并且即使在发射机和接收机之间存在时钟误差也能实现功率消耗的降低。在图1所示的常规方法的情况下，如图1（A）所示，接收机较早地运行时间（Tm），从而在接收机的时钟误差超过时间段（Tm）之前实现同步。这需要用于实现时钟同步的扩展接收时间段，从而防止接收机降低其功耗。鉴于此，根据本发明，如图1所示，如图1（B）所示，在短时间内多次从发送器连续发送同步信号，接收机仅接收连续发送的同步信号之一。由此，接收器可以通过仅通过时间段（Tm'）（Tm'＆nlE; Tm）开始接收操作来实现参考时钟的同步。

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