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公开(公告)号：US10129071B2
公开(公告)日：2018-11-13
申请号：US15809126
申请日：2017-11-10
Applicant: Huawei Technologies Co., Ltd.
Inventor： Xiaodong Li , Qiao Liu
Abstract: The present disclosure provides a symbol synchronization method and apparatus. By means of the symbol synchronization method and apparatus, a timing location is adjusted outside an adaptive loop. In addition, the adaptive loop proceeds to according to an original function of the adaptive loop. That is, the timing location is stabilized to an initial symbol-synchronization location, and the timing location is then further corrected and adjusted. Therefore, impact of an error of a timing location on symbol synchronization is eliminated by correcting the timing location, and positioning accuracy of a symbol-synchronization location is improved.
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Patent Agency Ranking
公开(公告)号：US09444664B2
公开(公告)日：2016-09-13
申请号：US14035873
申请日：2013-09-24
Applicant: Huawei Technologies Co., Ltd.
Inventor： Zihuan Chen , Dafeng Tian , Xiaodong Li , Qiao Liu
CPC classification number: H04L27/0014 , H04L25/0202 , H04L2027/004 , H04L2027/0067
Abstract: Embodiments of the present invention provide a method, includes: performing channel estimation on a signal of a current channel to obtain channel information of the current channel, performing calculation processing on the channel information obtained in current channel estimation and channel information obtained in previous channel estimation to obtain a phase difference of the current channel information, dividing the phase difference of the current channel information by a time interval between two times of channel estimation to obtain residual frequency offset information of the current channel, adding the residual frequency offset information of the current channel and frequency offset information which is of the channel and obtained in a previous calculation to obtain frequency offset information of the current channel, and outputting the frequency offset information of the current channel, so as to perform frequency offset correction on the signal of the channel according to the current frequency offset information.
Abstract translation: 本发明的实施例提供一种方法，包括：对当前信道的信号进行信道估计，以获得当前信道的信道信息，对在当前信道估计中获得的信道信息进行计算处理，并在先前信道估计中获得的信道信息 为了获得当前信道信息的相位差，将当前信道信息的相位差除以两次信道估计之间的时间间隔，以获得当前信道的剩余频率偏移信息，将当前信道的剩余频率偏移信息相加 通道和频率偏移信息，以获得当前通道的频率偏移信息，并输出当前通道的频率偏移信息，以便对通道的信号进行频率偏移校正 根据 当前频率偏移信息。
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13.发明授权Method, apparatus, and system for reducing power consumption on xDSL subscriber board 有权用于降低xDSL用户板功耗的方法，设备和系统公开(公告)号：US09065887B2
公开(公告)日：2015-06-23
申请号：US14082395
申请日：2013-11-18
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Liang Chen , Xiaodong Li , Fengbin Pan , Xueren Yang
CPC classification number: H04M3/007 , H04B3/32 , H04L12/28 , H04M3/2209 , H04M3/30 , H04M11/062
Abstract: A method for reducing power consumption on an xDSL subscriber board, includes: obtaining a maximum downlink service bandwidth, a downlink signal-to-noise ratio margin in line connection parameters of the user port, and transmission mode information in a line template bound to the user port; determining whether the downlink signal-to-noise ratio margin is larger than a preset value, if yes, reducing a maximum downlink nominal total transmission power; otherwise, configuring the maximum downlink nominal total transmission power as a downlink transmit power in line connection parameters of the current port; calculating a minimum undistorted power supply voltage required by a corresponding line driver of each registered user port under the current configuration of the bound template, comparing minimum undistorted power supply voltage values, to find the largest value; and controlling an output voltage of a power module of a line driver equaling to the largest value.
Abstract translation: 一种用于降低xDSL用户板上的功耗的方法，包括：获得最大下行链路业务带宽，用户端口的线路连接参数中的下行链路信噪比裕度以及绑定到该用户端口的线路模板中的传输模式信息 用户端口 确定下行链路信噪比裕度是否大于预设值，如果是，则降低最大下行标称总发射功率; 否则，将最大下行标称总发射功率配置为当前端口的线路连接参数中的下行发射功率; 计算在绑定模板的当前配置下每个注册用户端口的相应线路驱动器所需的最小未失真电源电压，比较最小未失真电源电压值，以找到最大值; 以及控制等于最大值的线路驱动器的功率模块的输出电压。
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公开(公告)号：US10952213B2
公开(公告)日：2021-03-16
申请号：US15686440
申请日：2017-08-25
Applicant: Huawei Technologies Co., Ltd.
Inventor： Hao Long , Dejun Li , Xiaodong Li , Maurizio Mattivi , Italo Busi
Abstract: A frequency allocation method includes receiving, by a control device, a frequency allocation message using a dedicated channel, wherein the frequency allocation message carries a node identifier and a received signal strength information for a frequency, and determining, according to the frequency allocation message, a station needing frequency allocation, and obtaining node information of each station in a network. The method further includes computing, according to the received signal strength information for the frequency of the station needing frequency allocation and further according to the node information of each station, an optimum working frequency of the station needing frequency allocation, and allocating the optimum working frequency to the station needing frequency allocation.
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公开(公告)号：US10440720B2
公开(公告)日：2019-10-08
申请号：US15963672
申请日：2018-04-26
Applicant: Huawei Technologies Co., Ltd.
Inventor： Qiao Liu , Xiaodong Li
Abstract: A co-channel interference cancellation method and apparatus are provided. The method includes: obtaining effective interference by filtering co-channel interference according to a preset interference strength threshold, and obtaining a plurality of effective interference subgroups by grouping the effective interference; obtaining a reference interference sub-signal corresponding to the effective interference subgroup, by delaying a reference interference signal according to a determined interference delay of each effective interference subgroup; after each reference interference sub-signal passes through a corresponding adaptive interference reconstruction filter, obtaining a reconstructed interference signal by overlaying each reference interference sub-signal; and performing a subtraction operation on a received signal and the reconstructed interference signal. In this way, spectrum consumption is greatly reduced, and implementation is simple.
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公开(公告)号：US20180091352A1
公开(公告)日：2018-03-29
申请号：US15809126
申请日：2017-11-10
Applicant: Huawei Technologies Co., Ltd.
Inventor： Xiaodong Li , Qiao Liu
CPC classification number: H04L27/2665 , H04L7/0029 , H04L27/00 , H04L27/0014 , H04L2027/0069
Abstract: The present disclosure provides a symbol synchronization method and apparatus. By means of the symbol synchronization method and apparatus, a timing location is adjusted outside an adaptive loop. In addition, the adaptive loop proceeds to according to an original function of the adaptive loop. That is, the timing location is stabilized to an initial symbol-synchronization location, and the timing location is then further corrected and adjusted. Therefore, impact of an error of a timing location on symbol synchronization is eliminated by correcting the timing location, and positioning accuracy of a symbol-synchronization location is improved.
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