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    NETWORK TOPOLOGY STRUCTURE DETERMINING METHOD, DEVICE, AND SYSTEM
    5.
    发明公开
    NETWORK TOPOLOGY STRUCTURE DETERMINING METHOD, DEVICE, AND SYSTEM 审中-公开

    公开(公告)号：EP3648399A1

    公开(公告)日：2020-05-06

    申请号：EP17918815.6

    申请日：2017-07-26

    申请人： Huawei Technologies Co., Ltd.

    发明人： ZHANG, Xiaolong

    IPC分类号： H04L12/24 ,  H04M3/30 ,  H04B3/48

    摘要： Embodiments of this application provide a network topology determining method, apparatus, and system. The method includes: determining a length of a trunk cable based on a first time domain characteristic of an echo channel of a cable modem termination system CMTS; determining, based on a second time domain characteristic of an echo channel of each cable modem CM, a length of a drop cable connected to the trunk cable; determining a connection relationship between each CM and the trunk cable based on a signal to interference plus noise ratio SINR between any two of the CMs; and determining a topology of a network based on the length of the trunk cable, the length of the drop cable, and the connection relationship between each CM and the trunk cable. According to the embodiments of this application, the topology of the network can be simply and quickly determined.

    METHOD AND APPARATUS FOR REDUCING FEEDBACK OVERHEAD
    10.
    发明公开
    METHOD AND APPARATUS FOR REDUCING FEEDBACK OVERHEAD 审中-公开

    公开(公告)号：EP3402116A1

    公开(公告)日：2018-11-14

    申请号：EP18181017.7

    申请日：2010-02-01

    申请人： Huawei Technologies Co., Ltd.

    发明人： CENDRILLON, Raphael Jean ,  LONG, Guozhu

    IPC分类号： H04L5/00 ,  H04L25/02 ,  H04B3/32 ,  H04M3/00 ,  H04M3/30 ,  H04M3/22 ,  H04M3/34 ,  H04B17/24

    摘要： An apparatus comprising a receiver coupled to a digital subscriber line (DSL) between an exchange site and a customer premise equipment (CPE) and configured to send a feedback error message to train a precoder coupled to the exchange site, wherein the feedback error message comprises a plurality of error components and an indication of a quantity of bits per error component, a quantization accuracy per error component, or both. Included is a method comprising determining a range of error for a plurality of error components of a pilot signal; determining a quantity of bits for representing error such that a full error range is preserved, a quantization accuracy such that the full error range is represented by a fixed number of feedback bits, or both based on the range of error for the error components; and transmitting an error feedback signal that comprises the error components and indicates the quantity of bits, the quantization accuracy, or both.