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    • 1. 发明授权
    • Method and apparatus for data transmission with control over access to a transmission medium
    • 用于通过对传输介质的访问进行控制的数据传输的方法和装置
    • US06625162B2
    • 2003-09-23
    • US09208404
    • 1998-12-10
    • Toshihiko MyojoTetsuo KandaKazuo Moritomo
    • Toshihiko MyojoTetsuo KandaKazuo Moritomo
    • H04L12413
    • H04W74/0816
    • In a communication system including plural communication apparatuses that communicate each other using a single communication path, the state of the communication path is detected for communication. If the communication path is busy, a first control method is performed for controlling access to the communication path using a back off time selected at random. A second control method secures the communication path by transmitting and receiving the predetermined signal at transmission of a signal so as to control access to the communication path. In accordance with the kind of the signal to be transmitted, the first or the second control method is selected for communication. Thus, plural communication apparatuses can perform efficient communication.
    • 在包括使用单个通信路径相互通信的多个通信装置的通信系统中,检测通信路径的状态进行通信。 如果通信路径正忙,则执行第一控制方法,以便使用随机选择的退出时间控制对通信路径的访问。 第二控制方法通过在发送信号时发送和接收预定信号来确保通信路径,以便控制对通信路径的访问。 根据要发送的信号的种类,选择第一或第二控制方法进行通信。 因此,多个通信装置能够进行有效的通信。
    • 5. 发明授权
    • Diffusion code generating method for spread spectrum communication
    • 用于扩频通信的扩散码生成方法
    • US5537396A
    • 1996-07-16
    • US247937
    • 1994-05-24
    • Tetsuo KandaKatsuo SaitoToshihiko MyojoIchiro KatoNorihiro MochizukiHidetada Nago
    • Tetsuo KandaKatsuo SaitoToshihiko MyojoIchiro KatoNorihiro MochizukiHidetada Nago
    • H04J13/00H04B1/7075H04J13/02
    • H04B1/707H04B1/709
    • A diffusion code generating method for a code division multiplex communication by a spread spectrum system is provided. A receiving apparatus according to the above method receives the signal which was multiplexed by using a plurality of sets of diffusion codes and comprises: a generator to generate a sync code and a plurality of sets of diffusion codes other than the sync code; a correlator to obtain a correlation between a reception signal and the sync code generated from the generator; and a receiver to receive the reception signal on the basis of the plurality of sets of diffusion codes generated from the generator. The generator generates the sync code in a manner such that the cross-correlation values are set to very small values at positions near a code sync point or are enough smaller than the autocorrelation peak of the sync code or are set to very small values at both of or either one of the positions before and after the code sync point.
    • 提供了一种扩频码生成方法,用于通过扩频系统进行码分复用通信。 根据上述方法的接收装置接收通过使用多组扩散码复用的信号,并且包括:生成器,用于生成除同步码之外的同步码和多组扩散码; 相关器,用于获得从发生器产生的接收信号和同步码之间的相关性; 以及接收器,其基于从发电机产生的多组扩散码接收接收信号。 发生器以这样的方式生成同步码,使得互相关值在码同步点附近的位置被设置为非常小的值,或者足够小于同步码的自相关峰值,或者被设置为非常小的值 或者在代码同步点之前和之后的任一个位置。
    • 9. 发明授权
    • Apparatus and methods for conducting full-duplex wireless communication with a communication partner
    • 与通信伙伴进行全双工无线通信的装置和方法
    • US08917637B2
    • 2014-12-23
    • US13255083
    • 2010-02-05
    • Tetsuo KandaTadashi Eguchi
    • Tetsuo KandaTadashi Eguchi
    • H04B7/00H04B7/04H04W16/28
    • H04B7/0408H04W16/28
    • A wireless communication apparatus that conducts full-duplex wireless communication with a communication partner using a transmitting antenna and a receiving antenna is provided. The apparatus includes a transmitting unit configured to transmit a signal via the transmitting antenna using a first frequency channel, a receiving unit configured to receive a signal via the receiving antenna using a second frequency channel different from the first frequency channel, and a control unit configured to control beam angle of directionality of at least one of the transmitting antenna and the receiving antenna, so that a direction of a communication path of a signal which the transmitting unit transmits and the communication partner receives, and a direction of a communication path of a signal which the communication partner transmits and the receiving unit receives, differ from each other.
    • 提供一种使用发送天线和接收天线与通信对方进行全双工无线通信的无线通信装置。 该装置包括:发送单元,被配置为使用第一频率信道经由发送天线发送信号;接收单元,被配置为使用不同于第一频率信道的第二频率信道经由接收天线接收信号;以及控制单元, 以控制发射天线和接收天线中的至少一个的方向性的波束角,使得发送单元发送的信号和通信对方接收的信号的通信路径的方向以及通信对方的通信路径的方向 通信伙伴发送的信号和接收单元接收的信号彼此不同。
    • 10. 发明申请
    • WIRELESS COMMUNICATION APPARATUS, CONTROLLING METHOD THEREOF, AND PROGRAM
    • 无线通信设备,其控制方法和程序
    • US20110317595A1
    • 2011-12-29
    • US13255083
    • 2010-02-05
    • Tetsuo KandaTadashi Eguchi
    • Tetsuo KandaTadashi Eguchi
    • H04W4/00
    • H04B7/0408H04W16/28
    • A wireless communication apparatus that conducts full-duplex wireless communication with a communication partner using a transmitting antenna and a receiving antenna is provided. The apparatus includes a transmitting unit configured to transmit a signal via the transmitting antenna using a first frequency channel, a receiving unit configured to receive a signal via the receiving antenna using a second frequency channel different from the first frequency channel, and a control unit configured to control beam angle of directionality of at least one of the transmitting antenna and the receiving antenna, so that direction of a communication path of a signal which the transmitting unit transmits and the communication party receives, and direction of a communication path of a signal which the communication party transmits and the receiving unit receives, differ from each other.
    • 提供一种使用发送天线和接收天线与通信对方进行全双工无线通信的无线通信装置。 该装置包括:发送单元,被配置为使用第一频率信道经由发送天线发送信号;接收单元,被配置为使用不同于第一频率信道的第二频率信道经由接收天线接收信号;以及控制单元, 以控制发射天线和接收天线中的至少一个的方向性的波束角,使得发送单元发送的信号和通信方接收的信号的通信路径的方向以及信号的通信路径的方向 通信方发送和接收单元接收,彼此不同。