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    • 2. 发明授权
    • Signal transmission method and frame structure adopted in a TDD system
    • TDD系统中采用的信号传输方法和帧结构
    • US09001707B2
    • 2015-04-07
    • US12674336
    • 2008-10-23
    • Bo DaiShuqiang XiaPeng HaoChunli LiangGuanghui YuLiujun HuBin Yu
    • Bo DaiShuqiang XiaPeng HaoChunli LiangGuanghui YuLiujun HuBin Yu
    • H04J3/00H04B7/26H04L27/26H04L27/28H04W48/12
    • H04B7/2656H04L27/2602H04W48/12
    • A signal transmission method in a Time Division Duplex (TDD) system is disclosed. The method comprises following steps: within a time length of a half-frame of a radio frame, base station transmits signal on a downlink special time slot, thereafter does not transmit signal on a Guard Period (GP), and then receives signal on an uplink special time slot; all time lengths of other uplink or downlink normal time slots for transmitting signal are equal; the total time length of the downlink special time slot, the guard period and the uplink special time slot is integer times of the time length of an uplink or downlink normal time slot. In addition, a frame structure adopted in the TDD system which corresponds to the method is disclosed. The present invention makes it flexible to set the duration of the GP and it is guaranteed that, even if a synchronization signal adopts power promotion, it will not bring great interference to uplink reception of other base stations; in addition, the utilization efficiency of the system is improved.
    • 公开了时分双工(TDD)系统中的信号传输方法。 该方法包括以下步骤:在无线帧的半帧的时间长度内,基站在下行专用时隙发送信号,之后不在保护周期(GP)上发送信号,然后在 上行专用时隙; 用于发送信号的其他上行链路或下行链路正常时隙的所有时间长度相等; 下行专用时隙的总时间长度,保护周期和上行专用时隙是上行链路或下行链路正常时隙的时间长度的整数倍。 另外,公开了对应于该方法的TDD系统采用的帧结构。 本发明灵活设置GP的持续时间,并且保证即使同步信号采用功率提升,也不会对其他基站的上行接收带来很大的干扰; 此外,系统的利用效率得到提高。
    • 6. 发明申请
    • METHOD AND DEVICE FOR MAPPING THE INITIAL LOCATION OF DOWNLINK PILOT
    • 用于映射下行导航的初始位置的方法和装置
    • US20110002317A1
    • 2011-01-06
    • US12865079
    • 2008-07-04
    • Bo DaiShuqiang XiaGuanghui YuPeng HaoChunli Liang
    • Bo DaiShuqiang XiaGuanghui YuPeng HaoChunli Liang
    • H04W4/00
    • H04L5/0037H04L5/0023H04L5/0048
    • A mapping method for the initial location of the downlink pilot comprises the following steps: acquiring a cell sequence number; mapping the cell sequence number to k; and setting an initial location of a downlink pilot on a first antenna as the Kth sub-carrier. A mapping device for the initial location of the downlink pilot comprising: an acquiring module for acquiring a cell sequence number, a mapping module for mapping the cell sequence number to k and a setting module for setting an initial location of a downlink pilot on a first antenna as the Kth sub-carrier. The mapping method and the mapping device make each cell acquire the specific location of pilot, so that all functions of the system can be realized conveniently.
    • 用于下行链路导频的初始位置的映射方法包括以下步骤:获取小区序列号; 将细胞序列号映射到k; 以及将第一天线上的下行链路导频的初始位置设置为第K个子载波。 一种用于所述下行链路导频的初始位置的映射设备,包括:获取单元序列号的模块,用于将所述小区序列号映射到k的映射模块,以及用于在第一模式中设置下行链路导频的初始位置的设置模块 天线作为第K个子载波。 映射方法和映射设备使得每个小区获取导频的特定位置,从而可以方便地实现系统的所有功能。
    • 8. 发明授权
    • Method for transmitting the PDCCH signal
    • PDCCH信号的发送方法
    • US09215730B2
    • 2015-12-15
    • US12995928
    • 2008-12-10
    • Bo DaiPeng HaoShuqiang XiaGuanghui YuChunli Liang
    • Bo DaiPeng HaoShuqiang XiaGuanghui YuChunli Liang
    • H04J11/00H04W4/00H04W72/14H04W72/12
    • H04W72/14H04W72/1289
    • The present invention provides a method for transmitting a PDCCH (physical downlink control channel) signal, when the number of available resource blocks of the downlink bandwidth in a radio frame is less than or equal to k, 2 symbols are fixedly used to transmit the physical downlink control channel, wherein k is a natural number. The present invention further provides another method for transmitting a PDCCH signal. In a TDD Long Term Evolution system, when the number of available resource blocks of the downlink bandwidth in a radio frame is less than or equal to k and the uplink/downlink switching period is 10 ms, the transmitting end selects 2, 3 or 4 symbols to transmit the PDCCH signal in subframe 6. With the transmission method of the PDCCH signal provided in the present invention, the utilization efficiency of the system resources and the transmission performance of PDCCH can be improved.
    • 本发明提供一种发送PDCCH(物理下行链路控制信道)信号的方法,当无线帧中的下行链路带宽的可用资源块的数量小于或等于k时,2个符号被固定地用于发送物理 下行链路控制信道,其中k是自然数。 本发明还提供了另一种用于发送PDCCH信号的方法。 在TDD长期演进系统中,当无线帧中下行链路带宽的可用资源块的数量小于或等于k且上行/下行切换周期为10ms时,发送端选择2,3或4 在子帧6中发送PDCCH信号的符号。利用本发明提供的PDCCH信号的发送方法,可以提高系统资源的利用效率和PDCCH的传输性能。