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    • 1. 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设备
    • WO2011081410A2
    • 2011-07-07
    • PCT/KR2010009427
    • 2010-12-28
    • SAMSUNG ELECTRONICS CO LTDLEE IN HOKIM YOUN SUNHAN JIN KYU
    • LEE IN HOKIM YOUN SUNHAN JIN KYU
    • H04J11/00H04W24/10
    • H04W24/10H04L25/0202
    • 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。 该信道状态信息是在终端接收经由下行链路发送的参考信号时生成的,并且通过上行链路的控制信道反馈给基站。 因此,参考信号的传输周期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当数据是 实际上传输到终端,从而导致低效的链路自适应传输并恶化系统性能。 因此,本发明提供了一种用于设计上行链路周期性反馈结构的方法和设备,用于在用于估计下行链路信道状态的参考信号在延长的周期上发送的情况下减少信道状态差异,并且将终端的反馈开销 系统条款。
    • 6. 发明申请
    • METHOD AND APPARATUS FOR SENDING AND RECEIVING CONTROL CHANNEL IN WIRELESS COMMUNICATION SYSTEM
    • 在无线通信系统中发送和接收控制信道的方法和设备
    • WO2010087685A3
    • 2010-11-11
    • PCT/KR2010000638
    • 2010-02-02
    • SAMSUNG ELECTRONICS CO LTDLEE IN HOHAN JIN KYULEE JU HOYU JAE CHON
    • LEE IN HOHAN JIN KYULEE JU HO
    • H04W48/12H04L27/26H04W88/08
    • H04L5/0053H04W72/0486H04W72/1289
    • In a wireless communication system a control channel is required in order to use limited resources effectively. However, the control channel resource is part of the system overhead, and thus reduces the data channel resource used for data transmission. In the long term evolution (LTE) system based on OFDM, one subframe the consists of fourteen OFDM symbols wherein a maximum of three OFDM symbols are used for the control channel resource and remaining eleven OFDM symbols are used for the data channel resource. Therefore, the quantity of energy that can be transmitted for the control channel resource is extremely limited compared to the data channel resource. For this reason, the coverage of the control channel becomes less than that of the data channel, and even if a user can successfully receive the data channel, reception failure of a control channel sometimes results in failure of data recovery. In the present invention, in order to expand the coverage of the control channel to at least the coverage of the data channel, the time resource of the transmission resource wherein the control channel is transmitted is expanded and allocated for sending and receiving the control channel. By way of methods for extending the time resource are provided a method wherein a plurality of subframes are used to transmit one control channel, and a method wherein a part of a data channel is used for the control channel.
    • 在无线通信系统中,需要控制信道以有效地使用有限的资源。 但是,控制信道资源是系统开销的一部分,因此减少了用于数据传输的数据信道资源。 在基于OFDM的长期演进(LTE)系统中,一个子帧由十四个OFDM符号组成,其中最多三个OFDM符号用于控制信道资源并且其余十一个OFDM符号用于数据信道资源。 因此,与数据信道资源相比,可以为控制信道资源传输的能量的数量非常有限。 由于这个原因,控制信道的覆盖范围变得小于数据信道的范围,并且即使用户能够成功接收数据信道,控制信道的接收失败有时也会导致数据恢复失败。 在本发明中,为了将控制信道的覆盖范围扩展到至少数据信道的覆盖范围,扩展并分配其中发送控制信道的传输资源的时间资源以用于发送和接收控制信道。 通过用于扩展时间资源的方法提供了一种方法,其中使用多个子帧来传送一个控制信道,以及其中将一部分数据信道用于控制信道的方法。
    • 10. 发明申请
    • METHOD AND APPARATUS FOR ALLOCATING BACKHAUL TRANSMISSION RESOURCE IN WIRELESS COMMUNICATION SYSTEM BASED ON RELAY
    • 基于继电器的无线通信系统中分配传输资源的方法与装置
    • WO2010104338A2
    • 2010-09-16
    • PCT/KR2010001519
    • 2010-03-11
    • SAMSUNG ELECTRONICS CO LTDLEE IN HOCHO JOON YOUNGHAN JIN KYULEE JU HO
    • LEE IN HOCHO JOON YOUNGHAN JIN KYULEE JU HO
    • H04W72/12H04W48/12H04W88/04
    • H04B7/15507H04B7/2606H04L2001/0097
    • In a relay based wireless communication system, a method for transmitting an uplink backhaul of a relay node includes obtaining scheduling information for an uplink backhaul sub-frame through a downlink backhaul control channel from a base station, and performing a rate matching and mapping of data by regarding at least one predefined symbol as a blank symbol. The predefined symbol is located at a front part or a rear part of the scheduled uplink backhaul sub-frame. The transmitting method further includes performing a multiplexing of the uplink backhaul sub-frame, and transmitting the multiplexed uplink backhaul sub-frame. This method can eliminate an overlap of transmission and reception timing in a relay node due to an RF transmission/reception switching time delay. Also, the method can make better use of wireless backhaul resources and minimize an influence on conventional systems by offering the compatibility with conventional uplink and downlink sub-frame structures.
    • 在基于中继的无线通信系统中,用于发送中继节点的上行回程的方法包括:通过来自基站的下行链路回程控制信道获取上行链路回程子帧的调度信息,并且执行数据的速率匹配和映射 通过将至少一个预定义符号作为空白符号。 预定义符号位于调度的上行回程子帧的前部或后部。 发送方法还包括执行上行链路回程子帧的复用,以及发送多路复用的上行回程子帧。 由于RF发送/接收切换时间延迟,该方法可以消除中继节点中的发送和接收定时的重叠。 此外,该方法可以通过提供与常规上行链路和下行链路子帧结构的兼容性,更好地利用无线回程资源并最小化对常规系统的影响。