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    • 45. 发明公开
    • PRECODING METHOD, BASE STATION AND USER EQUIPMENT
    • VORCODIERUNGSVERFAHREN,BASISSTATION UNDBENUTZERGERÄT
    • EP2816751A1
    • 2014-12-24
    • EP12870616.5
    • 2012-12-24
    • Huawei Technologies Co., Ltd
    • YAN, HuaCHEN, Lei
    • H04L1/00
    • H04B7/0456H04B7/0452H04B7/0665H04L25/03343H04L25/03898H04L25/4975H04W24/02
    • Embodiments of the present invention provide a precoding method, a base station and a user equipment, relate to a communication field, may select a nonlinear precoding solution adaptively, and improve a system performance. The precoding method comprises: a base station acquires predetermined parameter(s) of at least one user equipment; calculates the acquired predetermined parameter(s) to obtain a calculation performance index; selects a target precoding solution according to the calculation performance index; precodes data information of all the user equipment(s) according to the target precoding solution; if the target precoding solution is a nonlinear precoding solution, sends the data information and indication signalling indicating information of the nonlinear precoding solution to each user equipment; and the user equipment receives the data information and the indication signalling which are sent by the base station; selects a receiver according to a receiver type obtained according to the indication signalling; and detects the received data information using the selected receiver. The embodiments of the present invention are used for precoding in an MIMO system.
    • 本发明的实施例提供了一种与通信领域相关的预编码方法,基站和用户设备,可以自适应地选择非线性预编码解决方案,并提高系统性能。 预编码方法包括:基站获取至少一个用户设备的预定参数; 计算所获取的预定参数以获得计算性能指标; 根据计算性能指标选择目标预编码解; 根据目标预编码解决方案对所有用户设备的数据信息进行预编码; 如果目标预编码解决方案是非线性预编码解决方案,则将数据信息和指示信号指示给每个用户设备的非线性预编码解决方案的信息; 并且用户设备接收由基站发送的数据信息和指示信令; 根据指示信令获得的接收机类型选择接收机; 并使用所选择的接收机检测接收的数据信息。 本发明的实施例用于MIMO系统中的预编码。
    • 50. 发明公开
    • METHOD AND ARRANGEMENT IN A WIRELESS COMMUNICATION SYSTEM
    • 无线通信系统中的方法和安排
    • EP2567465A1
    • 2013-03-13
    • EP10727168.6
    • 2010-05-04
    • Telefonaktiebolaget LM Ericsson (publ)
    • RAHMAN, Muhammad ImadurSUN, FanASTELY, David
    • H04B7/04H04B7/06
    • H04B7/0417H04B7/0465H04B7/0617H04B7/0626H04B7/0639H04B7/0665
    • Method and arrangement in a base station for sending data to a user equipment. The base station comprises an instance of a codebook, corresponding to another instance of the codebook comprised in the user equipment. The method comprises obtaining channel state information from a signal received from the user equipment, estimating a channel to be used for transmitting data to the user equipment, calculating a precoder, based on the obtained channel state information. Further is comprised the steps of selecting a precoding index from the codebook based on the calculated precoder, or selecting a precoding index received from the user equipment, precoding data to be transmitted to the user equipment using the calculated precoder and transmitting the precoded data, a non-user dedicated reference signal and the precoding index on the estimated channel to the user equipment. Further, corresponding method and arrangement in a user equipment are described.
    • 用于向用户设备发送数据的基站中的方法和装置。 基站包括码本的实例,对应于包括在用户设备中的码本的另一个实例。 该方法包括从从用户设备接收的信号中获得信道状态信息,估计将被用于向用户设备发送数据的信道,基于所获得的信道状态信息来计算预编码器。 进一步包括以下步骤:基于所计算的预编码器从码本选择预编码索引或者选择从用户设备接收的预编码索引;使用计算出的预编码器对要发送到用户设备的数据进行预编码并发送预编码数据; 非用户专用参考信号和估计信道上的预编码索引发送到用户设备。 此外,描述了用户设备中的对应方法和布置。