Apparatus and method for selecting relay mode of relay station in multihop relay broadband wireless communication system
    41.
    发明申请
    Apparatus and method for selecting relay mode of relay station in multihop relay broadband wireless communication system 有权
    在多跳中继宽带无线通信系统中选择中继站中继模式的装置和方法

    公开(公告)号:US20070190934A1

    公开(公告)日:2007-08-16

    申请号:US11657415

    申请日:2007-01-24

    IPC分类号: H04B3/36

    CPC分类号: H04B7/15557

    摘要: A method for selecting a relay mode depending on channel status of relay links in a multihop relay broadband wireless communication system and a Relay Station (RS) apparatus for supporting the method. When signals are received from a Base Station (BS) and a Mobile Station (MS), channel status values (e.g., eigenvalue, mutual information, and probability error) of relay links (BS-RS link and RS-MS link) are estimated using the received signals. The estimated channel status values are compared with a preset reference value. According to a result of the comparison, the relay mode for relaying the received signals is selected. Accordingly, the reliability of the relayed signal can be enhanced and the capacity of the signal link can be increased.

    摘要翻译: 根据多跳中继宽带无线通信系统中的中继链路的信道状态和用于支持该方法的中继站(RS)装置,选择中继模式的方法。 当从基站(BS)和移动台(MS)接收到信号时,估计中继链路(BS-RS链路和RS-MS链路)的信道状态值(例如特征值,互信息和概率误差) 使用接收到的信号。 将估计的通道状态值与预设的参考值进行比较。 根据比较的结果,选择用于中继接收信号的中继模式。 因此,可以提高中继信号的可靠性,并且可以提高信号链路的容量。

    Apparatus and method for controlling transmission/reception power by measuring propagation delay and processing time in a wireless communication system
    42.
    发明申请
    Apparatus and method for controlling transmission/reception power by measuring propagation delay and processing time in a wireless communication system 审中-公开
    通过测量无线通信系统中的传播延迟和处理时间来控制发射/接收功率的装置和方法

    公开(公告)号:US20070097900A1

    公开(公告)日:2007-05-03

    申请号:US11588433

    申请日:2006-10-27

    IPC分类号: H04B7/185

    摘要: An apparatus and method for controlling power in a multi-hop relay broadband wireless communication system are provided. A BS sends a signal to an RS and an MS to estimate distances between the BS, the RS and the MS. Upon receipt of signals from the RS and the MS, the BS measures ToAs of the received signals and detects time information included in the received signals, and calculates propagation delays between the BS, the RS and the MS based on the ToAs and the time information. The BS estimates the distances between the BS, the RS and the MS using the propagation delays, and controls transmission power according to the estimated distances.

    摘要翻译: 提供了一种用于控制多跳中继宽带无线通信系统中的功率的装置和方法。 BS向RS和MS发送信号以估计BS,RS和MS之间的距离。 在接收到来自RS和MS的信号时,BS测量接收到的信号的ToAs并且检测包括在接收信号中的时间信息,并且基于ToAs和时间信息来计算BS,RS和MS之间的传播延迟 。 BS使用传播延迟估计BS,RS和MS之间的距离,并且根据估计的距离来控制发射功率。

    Apparatus and method for reducing pilot overhead in a wireless communication system
    48.
    发明申请
    Apparatus and method for reducing pilot overhead in a wireless communication system 审中-公开
    一种用于在无线通信系统中减少导频开销的装置和方法

    公开(公告)号:US20060291372A1

    公开(公告)日:2006-12-28

    申请号:US11474558

    申请日:2006-06-26

    IPC分类号: H04J11/00

    摘要: An apparatus and method for reducing pilot overhead in a broadband wireless communication system are provided. A data symbol mapper maps data symbols to be transmitted into subcarriers and detects values of the data symbols mapped into predefined subcarriers. A pilot generator determines masking codes for each pilot group by using the detected values of the data symbols and masks the determined masking codes into pilot symbols of the corresponding pilot group. A pilot symbol mapper maps the masked pilot symbols received from the pilot generator into subcarriers.

    摘要翻译: 提供了一种用于减少宽带无线通信系统中的导频开销的装置和方法。 数据符号映射器映射要发送到子载波中的数据符号,并且检测映射到预定子载波中的数据符号的值。 导频发生器通过使用检测到的数据符号的值来确定每个导频组的掩码,并将确定的掩码代码掩蔽成相应导频组的导频符号。 导频符号映射器将从导频发生器接收的屏蔽导频符号映射成子载波。

    Apparatus and method for data transmission by constellation combination in a communication system
    50.
    发明申请
    Apparatus and method for data transmission by constellation combination in a communication system 审中-公开
    在通信系统中通过星座组合进行数据传输的装置和方法

    公开(公告)号:US20060120481A1

    公开(公告)日:2006-06-08

    申请号:US11295065

    申请日:2005-12-06

    IPC分类号: H04L27/36

    摘要: Disclosed are an apparatus and a method for efficiently transmitting data by constellation combination in a communication system. The method includes encoding and interleaving transmission data according to a predetermined encoding scheme, and dividing an interleaved signal into at least one signal interval corresponding to at least one modulation scheme; and transmitting data obtained by modulating at least one divided signal interval according to a modulation scheme corresponding to the divided signal interval, the data satisfying a predetermined data rate setup in a system by applying a preset modulation scheme to each divided signal interval.

    摘要翻译: 公开了一种在通信系统中通过星座组合有效地发送数据的装置和方法。 该方法包括根据预定的编码方案对发送数据进行编码和交织,并且将交织的信号划分为与至少一个调制方案对应的至少一个信号间隔; 以及通过对每个划分的信号间隔应用预设的调制方案,发送通过根据对应于划分的信号间隔的调制方案调制至少一个划分的信号间隔获得的数据,所述数据满足系统中的预定数据速率设置。