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    • 30. 发明申请
    • METHOD AND APPARATUS FOR REPORTING CHANNEL STATUS INFORMATION IN A WIRELESS COMMUNICATION SYSTEM
    • 用于在无线通信系统中报告信道状态信息的方法和装置
    • US20120294153A1
    • 2012-11-22
    • US13516965
    • 2010-12-28
    • In Ho LeeYoun Sun KimJin Kyu Han
    • In Ho LeeYoun Sun KimJin Kyu Han
    • H04W24/10
    • H04L5/0053H04B7/0626H04B7/0647H04L1/0026H04L1/0027H04L5/0048H04L5/005H04L5/0057H04W72/0413H04W72/0446H04W88/02H04W88/08
    • A base station in a downlink of a wireless communication system requires downlink channel status information of terminals to transmit link-adaptive transmission to the terminals. This channel status information is generated as a terminal receives a reference signal to be transmitted via the downlink, and fed back to the base station through a control channel of the uplink. Therefore, an increase in the transmission cycle of the reference signal and the feedback cycle of the channel status information may increase a difference between the channel status having been fed back from a terminal to the base station and the channel status at the point when data is actually transmitted to the terminal, thereby causing inefficient link-adaptive transmission and deteriorating the system performance. The present invention thus provides a method and apparatus for designing an uplink periodic feedback structure for reducing the channel status difference in case a reference signal for the estimation of a downlink channel status is transmitted over a prolonged cycle, and distributing a feedback overhead of terminals in terms of the system.
    • 无线通信系统的下行链路中的基站需要终端的下行链路信道状态信息来向终端发送链路自适应传输。 当终端接收到要通过下行链路发送的参考信号时,生成该信道状态信息,并通过上行链路的控制信道反馈给基站。 因此,参考信号的发送周期的增加和信道状态信息的反馈周期的增加可能增加已经从终端反馈到基站的信道状态与数据的时刻的信道状态之间的差异 实际发送到终端,从而导致低效的链路自适应传输和恶化的系统性能。 因此,本发明提供了一种用于设计用于在延迟的周期内传输用于估计下行链路信道状态的参考信号并且将终端的反馈开销分配在一起的信道状态差异的上行链路周期性反馈结构的方法和装置 系统条款。