公开(公告)号：US20140023094A1

公开(公告)日：2014-01-23

申请号：US14035873

申请日：2013-09-24

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zihuan CHEN ,  Dafeng TIAN ,  Xiaodong LI ,  Qiao LIU

IPC: H04L27/00

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。

公开(公告)号：US20200229139A1

公开(公告)日：2020-07-16

申请号：US16831315

申请日：2020-03-26

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yingdong MA ,  Zhaojun HE ,  Xiaodong LI ,  Yong ZHANG ,  Yong GUO

IPC: H04W72/00 ,  H04W72/04

Abstract: A multi-beam polling based transmission method and apparatus, and a communications device and an electronic device readable storage medium based on the method are disclosed. An access point AP broadcasts a beacon message, where the beacon message is used to indicate duration of a beacon period; and sends a data packet that includes channel use duration to a station STA, where the channel use duration is used to indicate a target slot at which the AP communicates with the STA within a duration range of the beacon period, so that the AP can communicate with the STA at the target slot.

公开(公告)号：US20180249472A1

公开(公告)日：2018-08-30

申请号：US15963672

申请日：2018-04-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Qiao LIU ,  Xiaodong LI

IPC: H04W72/08

CPC classification number: H04W72/082 ,  H04B1/1081 ,  H04B1/123 ,  H04B1/525 ,  H04L25/0204 ,  H04L25/0328 ,  H04W28/04

Abstract: Embodiments of the present invention disclose a co-channel interference cancellation method and apparatus. 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.