Signaling of random access preamble parameters in wireless networks

    公开(公告)号:US10182454B2

    公开(公告)日:2019-01-15

    申请号:US15804967

    申请日:2017-11-06

    Abstract: User equipment (UE)-initiated accesses within a cellular network are optimized to account for cell size and to reduce signaling overhead. A fixed set of preamble parameter configurations for use across a complete range of cell sizes within the cellular network is established and stored within each UE. A UE located in a given cell receives a configuration number transmitted from a nodeB serving the cell, the configuration number being indicative of a size of the cell. The UE selects a preamble parameter configuration from the fixed set of preamble parameter configurations in response to the received configuration number and then transmits a preamble from the UE to the nodeB using the preamble parameter configuration indicated by the configuration number.

    TRANSMISSION OF ACK/NACK BITS AND THEIR EMBEDDING IN THE REFERENCE SIGNAL
    56.
    发明申请
    TRANSMISSION OF ACK/NACK BITS AND THEIR EMBEDDING IN THE REFERENCE SIGNAL 审中-公开
    ACK / NACK位的传输及其参考信号中的嵌入

    公开(公告)号:US20140029589A1

    公开(公告)日:2014-01-30

    申请号:US14037926

    申请日:2013-09-26

    Abstract: Transmitting a ACK/NACK response in a wireless cellular network by mapping the data value into a cyclic shifted version of a reference signal. A subframe is formed with a plurality of symbols with certain symbols designated as reference signal (RS) symbols. The receiver and transmitter both know when an ACK/NACK response is expected. If an ACK/NACK response is not expected, then an RS is inserted in the duration of symbols designated as RS symbols. If an ACK/NACK response is expected, then the ACK/NACK response is embedded in one or more of the symbols designated as RS symbols. The subframe is transmitted to a receiver, and the receiver can determine the ACK/NACK value in the RS symbol, if present, and also use the RS symbol for coherent demodulation of a CQI (channel quality indicator) or data.

    Abstract translation: 通过将数据值映射到参考信号的循环移位版本中,在无线蜂窝网络中发送ACK / NACK响应。 子帧由具有指定为参考信号(RS)符号的某些符号的多个符号形成。 接收机和发射机都知道何时预期ACK / NACK响应。 如果不期望ACK / NACK响应,则在指定为RS符号的符号的持续时间内插入RS。 如果期望ACK / NACK响应,则将ACK / NACK响应嵌入被指定为RS符号的一个或多个符号中。 子帧被发送到接收机,并且接收机可以确定RS符号中的ACK / NACK值(如果存在),并且还使用RS符号来进行CQI(信道质量指示符)或数据的相干解调。

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