公开(公告)号：US10014880B2

公开(公告)日：2018-07-03

申请号：US14864338

申请日：2015-09-24

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiaoshu Si ,  Dao Pan ,  Fanglin Sun ,  Xiaofeng Zhang ,  Tao Ouyang

IPC: H03M13/17 ,  H03M13/11 ,  H03M13/35 ,  H03M13/00 ,  H04L1/00 ,  H03M13/15 ,  H03M13/23 ,  H03M13/29

CPC classification number: H03M13/17 ,  H03M13/1102 ,  H03M13/1515 ,  H03M13/23 ,  H03M13/2957 ,  H03M13/35 ,  H03M13/353 ,  H03M13/611 ,  H03M13/618 ,  H03M13/6516 ,  H04L1/0041 ,  H04L1/0046 ,  H04L1/0075

Abstract: Embodiments of the present disclosure provide an FEC coding and decoding method and device, and a system. A transmit end determines a forward error correction FEC coding type according to a length of to-be-coded data in burst data, and performs coding according to the determined FEC coding type. A receive end determines a forward error correction FEC decoding type according to a length of to-be-decoded data in burst data, and performs decoding according to the determined FEC decoding type. The FEC coding and decoding method provided in the embodiments of the present disclosure improves utilization of a communication resource is improved, and saves a communication resource.

公开(公告)号：US09871680B2

公开(公告)日：2018-01-16

申请号：US15490653

申请日：2017-04-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiaoshu Si ,  Tao Ouyang ,  Fan Wang ,  Xingli Xu

IPC: H04L25/08 ,  H04L29/06 ,  H04L25/02 ,  H04L12/707

CPC classification number: H04L25/085 ,  H04L25/022 ,  H04L27/2607 ,  H04L27/2613 ,  H04L27/2657 ,  H04L27/2675 ,  H04L45/24 ,  H04L69/22

Abstract: The present invention provides a preamble sequence sending and receiving method and apparatus, and a system. The preamble sequence sending method includes: generating, by a transmit end, a frequency offset estimation sequence, where the frequency offset estimation sequence includes N subsequences each with a length of M, N is a positive integer greater than or equal to 2, and M is a positive integer; generating, by the transmit end, a prefix and a suffix based on the frequency offset estimation sequence; adding, by the transmit end, the prefix and the suffix before and after the frequency offset estimation sequence respectively to form a preamble sequence, where the prefix and the suffix are used for canceling multipath interference; and adding, by the transmit end, the preamble sequence to a data packet and sending the data packet to a receive end.

公开(公告)号：US12289081B2

公开(公告)日：2025-04-29

申请号：US17508080

申请日：2021-10-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhixiong Ren ,  Tao Ouyang

IPC: H03F1/02 ,  H03F3/21

Abstract: A signal processing system includes n paths of load modulation modules and a combination module, where the n paths of load modulation modules are connected in parallel, an output end of each path of the load modulation modules is connected to an input end of the combination module, and n is an integer greater than 1; the n paths of load modulation modules include one path of main power amplification module and (n−1) paths of auxiliary power amplification modules, and the auxiliary power amplification modules are turned on when power values of signals received by input ends of the load modulation modules are greater than a first threshold; and the main power amplification module includes two outphasing power amplification units, and each path of auxiliary power amplification module includes two outphasing power amplifier arrays or one digital polar power amplifier array.

公开(公告)号：US10742469B2

公开(公告)日：2020-08-11

申请号：US16038163

申请日：2018-07-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Tao Ouyang ,  Syed Habib Rahman ,  Xiaoshu Si ,  Fan Wang ,  Hao Lei

IPC: H04L27/26 ,  H04L7/00 ,  H04W56/00

Abstract: A method and an apparatus for determining a time offset are disclosed. The method includes: obtaining, by a device at a head end, a time-domain signal based on a received signal; and then determining a time offset based on values of peak-to-average ratios of a preset quantity of symbols starting from a qth symbol in the time-domain signal, where a peak-to-average ratio of the qth symbol is greater than a preset threshold. A new method for determining a time offset is provided, and takes advantages that the time-domain signal obtained by the device at the head end has stronger capabilities of resisting interference such as frequency offset and phase noise. The method for determining a time offset can be applied both to initial ranging and periodic ranging.

公开(公告)号：US20180316515A1

公开(公告)日：2018-11-01

申请号：US16019183

申请日：2018-06-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yanbin Sun ,  Tao Ouyang ,  Lifan Xu ,  Li Zhang

IPC: H04L12/18 ,  H04L12/28 ,  H04L29/08 ,  H04L12/801 ,  H04N21/61

CPC classification number: H04N7/10

Abstract: Embodiments of the present invention provide a multicast profile switching method. In the method, using a multicast profile management module, a multicast profile switching request message is received from a cable modem termination system CMTS. A multicast profile having a maximum rate and commonly supported by all current multicast group members is determined. When the multicast profile having the maximum rate is different from a current multicast profile that is running, a multicast profile switching instruction is sent to the CMTS, where the multicast profile switching instruction is used to instruct the CMTS to perform multicast profile switching.

公开(公告)号：US10659244B2

公开(公告)日：2020-05-19

申请号：US16019183

申请日：2018-06-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yanbin Sun ,  Tao Ouyang ,  Lifan Xu ,  Li Zhang

IPC: H04L12/18 ,  H04N21/6405 ,  H04N21/61 ,  H04L12/28 ,  H04L12/801 ,  H04L29/08

Abstract: Embodiments of the present invention provide a multicast profile switching method. In the method, using a multicast profile management module, a multicast profile switching request message is received from a cable modem termination system CMTS. A multicast profile having a maximum rate and commonly supported by all current multicast group members is determined. When the multicast profile having the maximum rate is different from a current multicast profile that is running, a multicast profile switching instruction is sent to the CMTS, where the multicast profile switching instruction is used to instruct the CMTS to perform multicast profile switching.

公开(公告)号：US10476526B2

公开(公告)日：2019-11-12

申请号：US15990180

申请日：2018-05-25

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiaoshu Si ,  Dao Pan ,  Fanglin Sun ,  Xiaofeng Zhang ,  Tao Ouyang

IPC: H03M13/17 ,  H03M13/00 ,  H04L1/00 ,  H03M13/11 ,  H03M13/35 ,  H03M13/15 ,  H03M13/23 ,  H03M13/29

Abstract: Embodiments of the present disclosure provide an FEC coding and decoding method and device, and a system. A transmit end determines a forward error correction FEC coding type according to a length of to-be-coded data in burst data, and performs coding according to the determined FEC coding type. A receive end determines a forward error correction FEC decoding type according to a length of to-be-decoded data in burst data, and performs decoding according to the determined FEC decoding type. The FEC coding and decoding method provided in the embodiments of the present disclosure improves utilization of a communication resource is improved, and saves a communication resource.

公开(公告)号：US11134027B2

公开(公告)日：2021-09-28

申请号：US16714423

申请日：2019-12-13

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yanbin Sun ,  Chenghu Shen ,  James Jeng Chen ,  Tao Ouyang

IPC: H04L12/927 ,  H04L12/28

Abstract: A method for transmitting upstream data in a cable network is provided. The method includes a cable modem (CM) receiving a generic service identifier (G-SID) included in a corresponding information element (IE) in a data over cable service interface specification (DOCSIS) upstream bandwidth allocation MAP message. The G-SID is a unique identifier assigned to the CM. The method includes the CM transmitting the upstream data for one or more service flows of the CM via at least a portion of the CM bandwidth allocation.

公开(公告)号：US20210218427A1

公开(公告)日：2021-07-15

申请号：US17193212

申请日：2021-03-05

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhixiong Ren ,  Xiaoshu Si ,  Tao Ouyang ,  Pere L. Gilabert ,  Jose Angel Garcia Garcia ,  Gabriel Montoro

IPC: H04B1/04 ,  H03F3/24 ,  H03F1/32 ,  H03F1/42

Abstract: A signal processing method and system includes a baseband signal baseband signal processing module configured to perform slow envelope processing on a first signal, to obtain an envelope value E(n) of the first signal on which the slow envelope processing has been performed, obtain a phase value θ(n) based on E(n), where θ(n) and E(n) are in a linear relationship, and separate the first signal into a second signal and a third signal based on θ(n), where a phase difference between the second signal and the third signal is 2 θ(n), an amplifier configured to amplify the second signal and the third signal, and a synthesizer is configured to combine the amplified second signal and third signal to obtain a fourth signal.

公开(公告)号：US11411587B2

公开(公告)日：2022-08-09

申请号：US17193212

申请日：2021-03-05

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhixiong Ren ,  Xiaoshu Si ,  Tao Ouyang ,  Pere L Gilabert ,  Jose Angel Garcia Garcia ,  Gabriel Montoro

IPC: H04B1/04 ,  H03F1/32 ,  H03F1/42 ,  H03F3/24

Abstract: A signal processing method and system includes a baseband signal baseband signal processing module configured to perform slow envelope processing on a first signal, to obtain an envelope value E(n) of the first signal on which the slow envelope processing has been performed, obtain a phase value θ(n) based on E(n), where θ(n) and E(n) are in a linear relationship, and separate the first signal into a second signal and a third signal based on θ(n), where a phase difference between the second signal and the third signal is 2 θ(n), an amplifier configured to amplify the second signal and the third signal, and a synthesizer is configured to combine the amplified second signal and third signal to obtain a fourth signal.