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    • 6. 发明申请
    • MBMS DATA TRANSMISSION AND RECEIVING IN PACKET BASED ON CELLULAR SYSTEM
    • 基于蜂窝系统的分组数据传输和接收
    • US20090286468A1
    • 2009-11-19
    • US12468266
    • 2009-05-19
    • Jung-Im KIMYoung-Jo KOJae Heung KIMKyoung-Seok LEEByung-Han RYUSeung-Chan BANG
    • Jung-Im KIMYoung-Jo KOJae Heung KIMKyoung-Seok LEEByung-Han RYUSeung-Chan BANG
    • H04H20/71
    • H04L1/1816H04L1/0025H04L1/1887H04L2001/0093
    • Provided is a method for transmitting and receiving multimedia broadcast multicast service (MBMS) data in a packet based cellular system. The method for transmitting multimedia broadcast multicast service (MBMS) to a plurality of mobile stations in a packet based cellular system, includes the steps of: a) transmitting scheduling information of transmission data, b) hybrid automatic repeat request (HARQ) information, and a service group identifier (ID) for MBMS to the mobile stations through a MBMS dedicated control channel; b) transmitting information about a dedicated feedback channel of a mobile station and unique scrambling codes different by cells and mobile stations to the mobile stations; c) transmitting a MBMS data packet to the mobile station; d) transmitting radio resource information of data retransmitted using a downlink control signal to the mobile stations if negative acknowledgment (NACK) is received from at least one of the mobile stations; and e) transmitting the retransmitted data to the mobile stations.
    • 提供了一种在基于分组的蜂窝系统中发送和接收多媒体广播多播服务(MBMS)数据的方法。 在基于分组的蜂窝系统中向多个移动站发送多媒体广播组播服务(MBMS)的方法包括以下步骤:a)发送传输数据的调度信息,b)混合自动重传请求(HARQ)信息,以及 通过MBMS专用控制信道向移动台发送用于MBMS的业务组标识符(ID); b)向移动台发送关于移动台的专用反馈信道的信息和由小区和移动台不同的唯一扰码; c)向所述移动台发送MBMS数据分组; d)如果从所述移动站中的至少一个接收到否定确认(NACK),则向所述移动站发送使用下行链路控制信号重发的数据的无线资源信息; 以及e)将重传的数据发送到移动站。
    • 7. 发明申请
    • METHOD FOR TRANSMITTING DEDICATED REFERENCE SIGNAL, AND METHOD FOR RECEIVING DEDICATED REFERENCE SIGNAL
    • 用于发送专用参考信号的方法,以及用于接收专用参考信号的方法
    • US20100285810A1
    • 2010-11-11
    • US12769215
    • 2010-04-28
    • Young-Jo KOJae Young AHNBangwon SEO
    • Young-Jo KOJae Young AHNBangwon SEO
    • H04W72/12
    • H04B7/0452H04B7/022H04B7/024H04B7/0639H04L5/0023H04L5/0051H04W72/1231
    • Provided are a method of transmitting a dedicated reference signal (DRS), a method of receiving a DRS, and a feedback method of a terminal. The method of transmitting a DRS includes determining a DRS transmitting resource for at least one terminal which is a target of transmission, and transmitting the DRS using the determined transmission resource and notifying the terminal of information about layer used by the terminal. The method of receiving a DRS includes determining a DRS receiving resource, receiving information about layer used by a terminal from a serving cell base station, and receiving the DRS for the terminal using the determined reception resource and the information about layer. Accordingly, a terminal can find the position and sequence of its DRS. In particular, in the case of multi-user multiple input multiple output (MU-MIMO) or joint scheduling, it is possible to prevent or remove signal interference using the DRS of another terminal.
    • 提供了发送专用参考信号(DRS),接收DRS的方法和终端的反馈方法的方法。 发送DRS的方法包括确定作为传输对象的至少一个终端的DRS发送资源,以及使用所确定的传输资源发送DRS,并向终端通知关于终端使用的层的信息。 接收DRS的方法包括确定DRS接收资源,从服务小区基站接收终端使用的层的信息,以及使用所确定的接收资源和关于层的信息来接收终端的DRS。 因此,终端可以找到其DRS的位置和顺序。 特别地,在多用户多输入多输出(MU-MIMO)或联合调度的情况下,可以使用另一终端的DRS来防止或消除信号干扰。