公开(公告)号：US10728260B2

公开(公告)日：2020-07-28

申请号：US16360917

申请日：2019-03-21

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hui Zhao ,  Feng Qian ,  Wenhui Li ,  Zhijian Sun

IPC: H04L29/06 ,  H04L12/721 ,  H04L12/823 ,  H04L12/70

Abstract: A Slow Protocol packet processing method and a related apparatus, where the method includes receiving, by a network device, a first Slow Protocol packet, determining, based on port information of a port of the network device receiving the first Slow Protocol packet, that a negotiation process is already completed between the network device and the transmit end device, querying, based on device information of the transmit end device carried in the first Slow Protocol packet, whether a device information base stored by the network device in the negotiation process includes the device information of the transmit end device, and identifying the first Slow Protocol packet as a valid packet in response to a result that the device information base includes the device information of the transmit end device.

公开(公告)号：US11038898B2

公开(公告)日：2021-06-15

申请号：US16899177

申请日：2020-06-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hui Zhao ,  Feng Qian ,  Wenhui Li ,  Zhijian Sun

IPC: H04L29/06 ,  H04L12/721 ,  H04L12/823 ,  H04L12/70

Abstract: A Slow Protocol packet processing method includes receiving, by a network device, a first Slow Protocol packet, determining, based on port information of a port of the network device receiving the first Slow Protocol packet, that a negotiation process is already completed between the network device and the transmit end device, querying, based on device information of the transmit end device carried in the first Slow Protocol packet, whether a device information base stored by the network device in the negotiation process includes the device information of the transmit end device, and identifying the first Slow Protocol packet as a valid packet in response to a result that the device information base includes the device information of the transmit end device.

公开(公告)号：US20200304520A1

公开(公告)日：2020-09-24

申请号：US16899177

申请日：2020-06-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hui Zhao ,  Feng Qian ,  Wenhui Li ,  Zhijian Sun

IPC: H04L29/06 ,  H04L12/721 ,  H04L12/823

Abstract: A Slow Protocol packet processing method includes receiving, by a network device, a first Slow Protocol packet, determining, based on port information of a port of the network device receiving the first Slow Protocol packet, that a negotiation process is already completed between the network device and the transmit end device, querying, based on device information of the transmit end device carried in the first Slow Protocol packet, whether a device information base stored by the network device in the negotiation process includes the device information of the transmit end device, and identifying the first Slow Protocol packet as a valid packet in response to a result that the device information base includes the device information of the transmit end device.

公开(公告)号：US11258666B2

公开(公告)日：2022-02-22

申请号：US16727596

申请日：2019-12-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Bo Song ,  Feng Qian ,  Hui Zhao ,  Chong Wang

IPC: H04L12/24 ,  H04L41/0893 ,  H04L45/24

Abstract: A method, a device, and a system for implementing a multiplexer (mux) machine, where the method includes setting a mux machine on a first aggregation port to be in a PROTECT_WAITING state, when the mux machine is in the PROTECT_WAITING state, determining that the first aggregation port is not in a collecting and distributing state, and sending, to a second network device, a first Link Aggregation Control Protocol Data Unit (LACPDU) packet that is used to notify that the first aggregation port is in the collecting and distributing state, and when a second LACPDU packet that is from the second network device and indicating that a second aggregation port is in the collecting and distributing state is received, switching a status of the mux machine from the PROTECT_WAITING state to a COLLECTING_DISTRIBUTING state, and setting the first aggregation port to be in the collecting and distributing state.

公开(公告)号：US20190222584A1

公开(公告)日：2019-07-18

申请号：US16360917

申请日：2019-03-21

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hui Zhao ,  Feng Qian ,  Wenhui Li ,  Zhijian Sun

IPC: H04L29/06 ,  H04L12/823 ,  H04L12/721

Abstract: A Slow Protocol packet processing method and a related apparatus, where the method includes receiving, by a network device, a first Slow Protocol packet, determining, based on port information of a port of the network device receiving the first Slow Protocol packet, that a negotiation process is already completed between the network device and the transmit end device, querying, based on device information of the transmit end device carried in the first Slow Protocol packet, whether a device information base stored by the network device in the negotiation process includes the device information of the transmit end device, and identifying the first Slow Protocol packet as a valid packet in response to a result that the device information base includes the device information of the transmit end device.

公开(公告)号：US10187243B2

公开(公告)日：2019-01-22

申请号：US15165583

申请日：2016-05-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wei Zhu ,  Yunbao Zeng ,  Hui Zhao ,  Long Zhao

IPC: G01R31/08 ,  H04L27/26 ,  H04B3/54 ,  H04L5/22

Abstract: The present invention discloses a preamble sequence generating method and device, which are used to avoid a problem, caused by damages to a preamble sequence resulting from interference in an NB-PLC system, that it is difficult for a receive end to correctly perform timing synchronization. The method includes: determining a quantity m of orthogonal frequency division multiplexing OFDM symbols that constitute a single pattern in a preamble sequence, where m is not less than 2; and generating a preamble sequence according to m, so that every m OFDM symbols that are in the generated preamble sequence and consecutive in a time domain constitute a single pattern, and the generated preamble sequence includes at least two patterns, where the patterns are different from each other. Embodiments of the present invention further provide a timing synchronization method and device.

公开(公告)号：US20140177677A1

公开(公告)日：2014-06-26

申请号：US14190752

申请日：2014-02-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiaojun Luo ,  Hui Zhao

IPC: H04B1/71 ,  H04B1/692

CPC classification number: H04B1/692 ,  H04B1/71 ,  H04B1/7102

Abstract: A method and a device for signal processing in a communication system are provided. The method includes: performing sampling and time-frequency transform on a received first time domain signal to obtain a first frequency domain signal; performing modulus operation on the first frequency domain signal with respect to a preset threshold to obtain a second frequency domain signal; performing inverse time-frequency transform on the second frequency domain signal to obtain a second time domain signal, and performing despreading on the second time domain signal. The embodiments of the present invention can avoid the problem in the prior art that not only the NBI signal but also the SS signal which is a useful signal are filtered out, which results from frequency domain signals of a certain number of frequency points being set to zero, and thereby improve the reliability of signal reception.

Abstract translation: 提供了一种在通信系统中用于信号处理的方法和装置。 该方法包括：对所接收的第一时域信号执行采样和时频变换以获得第一频域信号; 对所述第一频域信号进行相对于预设阈值的模数运算以获得第二频域信号; 对所述第二频域信号执行逆时间 - 频率变换以获得第二时域信号，并对所述第二时域信号进行解扩。 本发明的实施例可以避免现有技术中不仅NBI信号而且有用的信号的SS信号被滤除，这是由于一定频率点的频域信号被设置为 零，从而提高信号接收的可靠性。

公开(公告)号：US20160277230A1

公开(公告)日：2016-09-22

申请号：US15165583

申请日：2016-05-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wei Zhu ,  Yunbao Zeng ,  Liangchuan Kang ,  Hui Zhao ,  Long Zhao

IPC: H04L27/26 ,  H04B3/54 ,  H04L5/22

CPC classification number: H04L27/2692 ,  H04B3/54 ,  H04L5/22 ,  H04L27/2613 ,  H04L27/2662 ,  H04L27/2688

Abstract: The present invention discloses a preamble sequence generating method and device, which are used to avoid a problem, caused by damages to a preamble sequence resulting from interference in an NB-PLC system, that it is difficult for a receive end to correctly perform timing synchronization. The method includes: determining a quantity m of orthogonal frequency division multiplexing OFDM symbols that constitute a single pattern in a preamble sequence, where m is not less than 2; and generating a preamble sequence according to m, so that every m OFDM symbols that are in the generated preamble sequence and consecutive in a time domain constitute a single pattern, and the generated preamble sequence includes at least two patterns, where the patterns are different from each other. Embodiments of the present invention further provide a timing synchronization method and device.

Abstract translation: 本发明公开了一种前导序列生成方法和装置，其用于避免由于NB-PLC系统中的干扰而导致的前导序列的损坏而导致的问题，接收端难以正确地执行定时同步 。 该方法包括：确定在前导码序列中构成单个模式的正交频分复用OFDM符号的数量m，其中m不小于2; 并根据m产生前同步码序列，使得在所生成的前导码序列中并且在时域中连续的每m个OFDM符号构成单个模式，并且所生成的前导序列包括至少两个模式，其中模式不同于 彼此。 本发明的实施例还提供一种定时同步方法和装置。

公开(公告)号：US20230198940A1

公开(公告)日：2023-06-22

申请号：US18173331

申请日：2023-02-23

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Hui Zhao ,  Wei Li ,  Yunlei Chen ,  Xueming Hu ,  Yu Cai

IPC: H04L61/5014

CPC classification number: H04L61/5014 ,  H04L2101/604

Abstract: The technology of this application relates to a method for controlling a client to go online, a network device, and a client, and relates to the communications field. The technology provides a method for supporting a network side in controlling a client to retransmit an online request packet. A network device determines a sending interval of an online request packet for a client, and transmits the sending interval to the client by using an advertisement packet, so that the client retransmits the online request packet based on the interval specified by the network side. In this technical solution, the network side changes from passively responding to an online request sending behavior of the client to actively controlling the online request sending behavior of the client.

公开(公告)号：US08989234B2

公开(公告)日：2015-03-24

申请号：US14190752

申请日：2014-02-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiaojun Luo ,  Hui Zhao

IPC: H04B1/00 ,  H04B1/692 ,  H04B1/71

CPC classification number: H04B1/692 ,  H04B1/71 ,  H04B1/7102

Abstract: A method and a device for signal processing in a communication system are provided. The method includes: performing sampling and time-frequency transform on a received first time domain signal to obtain a first frequency domain signal; performing modulus operation on the first frequency domain signal with respect to a preset threshold to obtain a second frequency domain signal; performing inverse time-frequency transform on the second frequency domain signal to obtain a second time domain signal, and performing despreading on the second time domain signal. The embodiments of the present invention can avoid the problem in the prior art that not only the NBI signal but also the SS signal which is a useful signal are filtered out, which results from frequency domain signals of a certain number of frequency points being set to zero, and thereby improve the reliability of signal reception.

Abstract translation: 提供了一种在通信系统中用于信号处理的方法和装置。 该方法包括：对所接收的第一时域信号执行采样和时频变换以获得第一频域信号; 对所述第一频域信号进行相对于预设阈值的模数运算以获得第二频域信号; 对所述第二频域信号执行逆时间 - 频率变换以获得第二时域信号，并对所述第二时域信号进行解扩。 本发明的实施例可以避免现有技术中不仅NBI信号而且有用的信号的SS信号被滤除，这是由于一定频率点的频域信号被设置为 零，从而提高信号接收的可靠性。