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    Method for transmitting a reference signal, method for determining phase noise and related apparatuses
    34.
    发明授权
    Method for transmitting a reference signal, method for determining phase noise and related apparatuses 有权

    公开(公告)号：US10659119B2

    公开(公告)日：2020-05-19

    申请号：US16475072

    申请日：2017-08-25

    Applicant: China Academy of Telecommunications Technology

    Inventor： Hui Li ,  Qiubin Gao ,  Xin Su ,  Tamrakar Rakesh ,  Runhua Chen ,  Qiuping Huang ,  Chuanjun Li ,  Mengjun Wang

    IPC: H04L27/26 ,  H04B7/0456 ,  H04L25/02

    Abstract: The present invention relates to the field of wireless communications, and in particular, to a method for transmitting a reference signal, a method for determining a phase noise, and related apparatuses, to resolve the problem in the prior art that different phase noises of different antenna units or antenna ports of a transmitter cannot be accurately estimated and compensated for. The method comprises: the transmitter respectively transmitting each precoded DMRS and PTRS to a receiver via respective corresponding antenna groups having a same phase noise, and when the receiver receives the PTRS, performing channel estimation based on each received PTRS, to determine phase changes caused by phase noises corresponding to different antenna groups. In this way, even if different antennas of a transmitter have different phase noises, phase changes caused by the different phase noises can still be accurately determined, so that all data transmitted by the different antenna groups can be accurately demodulated according to different phase changes.

    METHOD, DEVICE, AND SYSTEM FOR REPORTING CHANNEL QUALITY INDICATOR
    38.
    发明申请
    METHOD, DEVICE, AND SYSTEM FOR REPORTING CHANNEL QUALITY INDICATOR 有权
    报告渠道质量指标的方法，装置和系统

    公开(公告)号：US20140056272A1

    公开(公告)日：2014-02-27

    申请号：US14113216

    申请日：2012-10-26

    Applicant: China Academy of Telecommunications Technology

    Inventor： Qiubin Gao ,  Wenhong Chen ,  Hao Ni ,  Chun Luo ,  Hui Li ,  Shaohui Sun

    IPC: H04L5/00 ,  H04W24/02

    CPC classification number: H04L5/0035 ,  H04J11/0053 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0019 ,  H04L1/0026 ,  H04L1/0035 ,  H04L1/0077 ,  H04L1/20 ,  H04L5/0073 ,  H04L2001/0092 ,  H04W24/02 ,  H04W72/00 ,  H04W72/12

    Abstract: Disclosed are a method, device, and system for reporting a channel quality indicator (CQI), applicable in solving the problem in coordinated multipoint transmission technology of the incapability of a network side to execute accurately resource distribution and scheduling due to the incapability of the network side to have accurate knowledge of the interference that a terminal is being subjected to. The method is: on the basis of measurement reference signals transmitted by each device in a measurement collection, the terminal feeding back to a network side device an initial CQI of each device in the measurement collection; on the basis of the initial CQI of each device fed back by the terminal, and of channel matrix reference information fed back by the terminal, the network side device calculating a target CQI of the terminal. This allows the network side to learn accurately the interference that the terminal is being subjected to, thus allowing for accurate execution of terminal scheduling, resource distribution, and MCS selection, for effectively improved system throughput in coordinated multipoint transmission, and for improved system performance.

    Abstract translation: 公开了一种用于报告信道质量指示符（CQI）的方法，装置和系统，可用于解决由于网络不能正确地准确地执行资源分配和调度的网络侧无能力的协调多点传输技术中的问题 以准确了解终端受到的干扰。 该方法是：基于测量集合中的每个设备发送的测量参考信号，终端向网络侧设备反馈测量集合中每个设备的初始CQI; 基于由终端反馈的每个设备的初始CQI和由终端反馈的信道矩阵参考信息，网络侧设备计算终端的目标CQI。 这允许网络侧准确地了解终端所遭受的干扰，从而准确执行终端调度，资源分配和MCS选择，有效提高协同多点传输中的系统吞吐量，并提高系统性能。

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