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    TERMINAL SWITCHING METHOD, BASE STATION AND COMMUNICATION SYSTEM
    2.
    发明公开
    TERMINAL SWITCHING METHOD, BASE STATION AND COMMUNICATION SYSTEM 有权
    终端控制方法，基站和通信系统

    公开(公告)号：EP2432276A1

    公开(公告)日：2012-03-21

    申请号：EP10774865.9

    申请日：2010-05-07

    申请人： Mitsubishi Electric Corporation ,  NTT DOCOMO, INC.

    发明人： FUKUI, Noriyuki ,  MISHUKU, Tetsuya ,  YAJIMA, Tatsuro ,  OYANE, Hidehiko

    IPC分类号： H04W28/04 ,  H04L1/16 ,  H04L29/08

    CPC分类号： H04L1/0007 ,  H04L1/1803 ,  H04L1/187 ,  H04L1/1887 ,  H04L69/324

    摘要： A terminal switching method for switching terminals, in a communication system in which HARQ processing is performed, to which a base station grants a transmission permission, from a terminal A to a terminal B includes a step of notifying the terminal B of aborting of the transmission permission, a step of setting a time point at which an HARQ process whose state of the HARQ processing is a retransmission waiting state with the terminal A is performed as a virtual starting point, a step of setting a retransmission waiting window having a predetermined window length with the virtual starting point being regarded as its starting point, and a step of notifying the terminal B of the transmission permission when there is no HARQ process having the retransmission waiting state with the terminal A, wherein the virtual starting point setting and the window setting are repeated until there is no HARQ process having the retransmission waiting state with the terminal A.

    DATA COMMUNICATION METHOD AND MOBILE COMMUNICATION SYSTEM
    4.
    发明公开
    DATA COMMUNICATION METHOD AND MOBILE COMMUNICATION SYSTEM 有权
    数据通信方法和移动通信系统

    公开(公告)号：EP2068465A1

    公开(公告)日：2009-06-10

    申请号：EP06810540.2

    申请日：2006-09-26

    申请人： Mitsubishi Electric Corporation

    发明人： MOCHIZUKI, Mitsuru ,  MAEDA, Miho ,  IWANE, Yasushi ,  FUKUI, Noriyuki ,  MISHUKU, Tetsuya ,  TAKANO, Michiaki ,  FUJIE, Ryoichi ,  TANI, Shigenori ,  OKUBO, Akira ,  OZAKI, Keisuke

    IPC分类号： H04B7/26

    CPC分类号： H04W72/005 ,  H04L5/0023 ,  H04L5/006 ,  H04W4/06 ,  H04W24/00 ,  H04W24/04 ,  H04W36/0072 ,  H04W36/18 ,  H04W48/20 ,  H04W72/12 ,  H04W88/02 ,  H04W88/08

    摘要： Since OFDM (Orthogonal Frequency Division Multiplexing), which is a downlink access scheme used for an LTE (Long Term Evolution) communication system, is weak at interference, it is preferable that the number of base stations for transmitting the same E-MBMS (Evolved Multimedia Broadcast Multicast Service) data be not excessive.
    Thus, the mobile terminal performs: processing of obtaining measurement quality values by measuring reception quality of each base station; processing of deciding on whether the measurement quality value of a serving base station exceeds a certain receiving level; processing of adding measurement quality values of other base stations to the measurement quality value of the serving base station until the sum exceeds the certain receiving level; and processing of notifying the serving base station of the serving base station and other base stations as candidates for an active set for E-MBMS. This makes it possible to select as the active set for E-MBMS an appropriate number of base stations that make it compatible to maintain good reception quality and to prevent interference.

    摘要翻译： 由于作为用于LTE（长期演进）通信系统的下行链路接入方式的OFDM（Orthogonal Frequency Division Multiplexing：正交频分复用）干扰较弱，所以优选的是用于发送相同的E-MBMS（演进的 多媒体广播多播服务）数据不会过多。 因此，移动终端执行：通过测量每个基站的接收质量来获得测量质量值的处理; 处理确定服务基站的测量质量值是否超过特定接收电平的处理; 将所述其他基站的测量质量值添加到所述服务基站的所述测量质量值直到所述总和超过所述特定接收电平为止的处理; 以及将服务基站和其他基站的服务基站通知为用于E-MBMS的活动集的候选者的处理。 这使得有可能为E-MBMS选择适当数量的基站，使其兼容以保持良好的接收质量并防止干扰。

    MEDIA ACCESS CONTROL METHOD
    9.
    发明公开
    MEDIA ACCESS CONTROL METHOD 审中-公开
    媒体访问控制程序

    公开(公告)号：EP2073414A1

    公开(公告)日：2009-06-24

    申请号：EP06767525.6

    申请日：2006-06-28

    申请人： MITSUBISHI ELECTRIC CORPORATION

    发明人： KOGUCHI, Kazuumi ,  MISHUKU, Tetsuya

    IPC分类号： H04J3/16 ,  H04J3/00 ,  H04L12/28

    CPC分类号： H04J3/1682 ,  H04L12/403 ,  H04L12/66

    摘要： A media access control method, with a time division multiple access in a communication system that includes a master station (11) and a plurality of slave stations (1, 2, 3, ...) has been proposed. The master station (11) transmits a maximum requestable frequency band, and each of the slave stations requests a desired frequency band that does not exceed the maximum requestable frequency band and also starts creating transmission data corresponding to the desired frequency band. The master station (11) assigns the desired frequency band to each of the slave stations without reducing the desired frequency band. Finally, each of the slave stations transmits the created transmission data using the desired frequency band to the master station (11).