公开(公告)号：US20160301436A1

公开(公告)日：2016-10-13

申请号：US15184716

申请日：2016-06-16

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhiqiang Zou ,  Hui Qiao ,  Honglin Chai

IPC: H04B1/10 ,  H04L27/00 ,  H04L5/14

CPC classification number: H04B1/1027 ,  H04B1/525 ,  H04L5/1461 ,  H04L27/0008

Abstract: Embodiments of the present invention provide a method and a device for reducing intermodulation interference. The method includes: performing real-time estimation according to time domain information of M downlink transmit signals, to obtain a first intermodulation interference signal; and cancelling, according to the first intermodulation interference signal, intermodulation interference generated by the M downlink transmit signals in an uplink receive signal, where M is an integer greater than or equal to 2, and the M downlink transmit signals are baseband signals that are transmitted on M carriers and that are not combined. Based on the foregoing solutions, the actually generated intermodulation interference can be effectively cancelled, thereby reducing intermodulation interference and improving system performance.

Abstract translation: 本发明的实施例提供了减少互调干扰的方法和装置。 该方法包括：根据M个下行链路发送信号的时域信息进行实时估计，得到第一互调干扰信号; 并且根据第一互调干扰信号，在上行接收信号中由M个下行链路发射信号产生的互调干扰，其中M是大于或等于2的整数，并且M个下行链路发射信号是发送的基带信号 在M载波上，并没有组合。 基于上述解决方案，可以有效地消除实际产生的互调干扰，从而减少互调干扰并提高系统性能。

公开(公告)号：US20230147737A1

公开(公告)日：2023-05-11

申请号：US18154612

申请日：2023-01-13

Applicant: Huawei Technologies Co., Ltd.

Inventor： Man Wang ,  Zhiqiang Zou

IPC: H04W52/02 ,  H04W72/52 ,  H04W72/044

CPC classification number: H04W52/0206 ,  H04W72/52 ,  H04W72/044

Abstract: This application provides a communication method, applied to beam sweeping. The method includes: obtaining system load of a cell at a current moment; configuring a quantity of sweeping beams in a sweeping periodicity based on the system load at the current moment; and configuring a quantity of shutdown symbols based on the quantity of sweeping beams. This application further provides a communication apparatus, a communication device, and a computer-readable storage medium, to resolve a technical problem in a conventional technology that a plurality of symbols are always in a power consumption state and energy overheads are high because a fixed quantity of beams are used for sweeping to enhance coverage, so that a base station saves more energy.

公开(公告)号：US11121899B2

公开(公告)日：2021-09-14

申请号：US16658380

申请日：2019-10-21

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhiqiang Zou ,  Honglin Chai

IPC: H04L27/26 ,  H04B7/0456 ,  H04L5/00

Abstract: Embodiments relate to a signal quality control method and a base station. The method includes: determining, by the base station based on a clipping threshold corresponding to each of the plurality of antennas, a time-domain noise signal for clipping a first time-domain signal of each antenna; performing time-frequency transformation on the time-domain noise signal of each antenna to obtain a first frequency-domain noise signal; processing the first frequency-domain noise signals of the plurality of antennas jointly to decompose the first frequency-domain noise signals into a second frequency-domain noise signal set in L flow directions and/or a third frequency-domain noise signal set in a complementary space of the L flows; and using the second frequency-domain noise signal set and/or the third frequency-domain noise signal set to clip the first time-domain signal set. According to the embodiments, noise signals are processed jointly.

公开(公告)号：US09961652B2

公开(公告)日：2018-05-01

申请号：US15264163

申请日：2016-09-13

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhiqiang Zou ,  Honglin Chai

IPC: H04M1/00 ,  H04W52/52 ,  H04W52/34 ,  H04L7/00 ,  H04L12/26 ,  H04W24/02 ,  H04W52/02 ,  H04L27/26 ,  H04W88/12

CPC classification number: H04W52/52 ,  H04L7/007 ,  H04L27/2601 ,  H04L43/028 ,  H04W24/02 ,  H04W52/0209 ,  H04W52/346 ,  H04W88/12 ,  Y02D70/00 ,  Y02D70/1262

Abstract: The present disclosure relates to a power control method and apparatus, where the method includes: respectively determining, by a base station, error vector magnitude EVM indicator adjustment parameters of n terminals according to terminal types of the n terminals that are currently scheduled; processing, according to the EVM indicator adjustment parameters of the n terminals, to-be-transmitted signals of the n terminals to obtain an output signal, and determining a change of total power of the output signal relative to the to-be-transmitted signals; and dynamically controlling a supply voltage of a power amplifier according to the change of the total power of the output signal relative to the to-be-transmitted signals. According to the power control method and apparatus provided in embodiments of the present disclosure, different processing is performed on signals of different terminals, so that system performance of the OFDM system is improved.

公开(公告)号：US20170195143A1

公开(公告)日：2017-07-06

申请号：US15466368

申请日：2017-03-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xi Chen ,  Zhiqiang Zou

IPC: H04L25/03

CPC classification number: H04L25/03006 ,  H04B1/1036 ,  H04L25/0222 ,  H04L25/03012 ,  H04L25/03159 ,  H04L27/265

Abstract: Embodiments of the present invention provide an adaptive narrowband interference cancellation method and an apparatus. A receiving apparatus in the present invention includes: a channel type determining module, configured to: measure a delay spread of a multipath channel passed by a received time-domain signal, and determine a channel type according to a measurement result; a weighting coefficient selection module, configured to select a weighting coefficient according to the channel type; a time-domain windowing processing module, configured to perform time-domain windowing processing on the time-domain signal according to the weighting coefficient; and a frequency-domain interference cancellation processing module, configured to perform, according to the weighting coefficient, frequency-domain interference cancellation processing on the signal that is output after the time-domain windowing processing.

公开(公告)号：US12082186B2

公开(公告)日：2024-09-03

申请号：US17383292

申请日：2021-07-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Qiang Huo ,  Zhiqiang Zou ,  Huajia Li

IPC: H04W72/1268 ,  H04W72/044 ,  H04W72/0453 ,  H04W72/1273 ,  H04W72/54

CPC classification number: H04W72/1268 ,  H04W72/0453 ,  H04W72/046 ,  H04W72/1273 ,  H04W72/54

Abstract: Embodiments of this application provide a scheduling method and apparatus, and relate to the communications field. The method includes: Abase station obtains information about predicted interference of N downlink signals of the base station to an uplink signal, where N is an integer greater than 1, and the information about predicted interference is used to indicate predicted interference impact, on the uplink signal, of passive intermodulation signals generated by interaction between the N downlink signals. Then, the base station may perform resource scheduling on the N downlink signals and/or the uplink signal based on the obtained information about predicted interference, where the resource scheduling includes frequency domain resource scheduling and space domain resource scheduling. In this application, the interference impact of the passive intermodulation signals can be effectively reduced, thereby improving system performance and radio resource utilization.

公开(公告)号：US20240022463A1

公开(公告)日：2024-01-18

申请号：US18476059

申请日：2023-09-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhiqiang Zou ,  Yanan Gao ,  Xi Chen

IPC: H04L27/26

CPC classification number: H04L27/2623

Abstract: This application provides a signal processing method and a communication apparatus. The method includes: if it is detected that at least one signal feature of each carrier signal in a first combined signal changes, determining, based on the signal feature of each carrier signal, a first clipping noise power corresponding to each carrier signal; and performing clipping on each carrier signal based on the first clipping noise power corresponding to each carrier signal. The signal feature includes one or more of a power, a bandwidth, a frequency, a power spectral density, or a modulation scheme. According to this method, clipping processing is performed on each carrier signal, to reduce a PAPR in an OFDM system. In addition, when the signal feature of each carrier signal changes, an access network device may determine a clipping noise power of each carrier signal based on a changed signal feature of each carrier signal.

公开(公告)号：US11337213B2

公开(公告)日：2022-05-17

申请号：US16991602

申请日：2020-08-12

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xi Chen ,  Zhiqiang Zou

IPC: H04W72/04 ,  H04W16/14 ,  H04W72/08 ,  H04L5/00 ,  H04L27/26

Abstract: Example signal receiving methods and apparatus are described. One example method includes receiving a time-domain signal sent by a sending device. The time-domain signal is replicated to obtain N time-domain signals. N window functions are configured, where the N window functions are in a one-to-one correspondence with the N time-domain signals. An operation is performed on each of the N time-domain signals based on a corresponding window function to obtain N windowed time-domain signals. The N windowed time-domain signals are separately converted to obtain N frequency-domain signals. An RB corresponding to an interference frequency is determined. One or more RBs are selected from each of the N frequency-domain signals and are arranged in sequence based on indexes to obtain a target frequency-domain signal.

公开(公告)号：US10305524B2

公开(公告)日：2019-05-28

申请号：US15184716

申请日：2016-06-16

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhiqiang Zou ,  Hui Qiao ,  Honglin Chai

IPC: H04B1/10 ,  H04L5/14 ,  H04B1/525 ,  H04L27/00

Abstract: Embodiments of the present invention provide a method and a device for reducing intermodulation interference. The method includes: performing real-time estimation according to time domain information of M downlink transmit signals, to obtain a first intermodulation interference signal; and cancelling, according to the first intermodulation interference signal, intermodulation interference generated by the M downlink transmit signals in an uplink receive signal, where M is an integer greater than or equal to 2, and the M downlink transmit signals are baseband signals that are transmitted on M carriers and that are not combined. Based on the foregoing solutions, the actually generated intermodulation interference can be effectively cancelled, thereby reducing intermodulation interference and improving system performance.

公开(公告)号：US20240196268A1

公开(公告)日：2024-06-13

申请号：US18412574

申请日：2024-01-14

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Bo Xu ,  Zhiqiang Zou ,  Hua Cai

IPC: H04W28/06

CPC classification number: H04W28/06

Abstract: Embodiments of this application provide a data compression method, a data decompression method, and a communication apparatus. The communication apparatus may be a baseband unit (BBU), a remote radio unit (RRU), or the like. The method may be used for data compression and decompression. During data compression, the communication apparatus may obtain first data based on N pieces of original data, an amount K of combined data, and a data bit width L of the combined data, where the first data is data obtained by compressing the original data, a data bit width corresponding to the first data is β, β is a non-integer greater than 0, and N, K, and L are positive integers; then determine the combined data based on β and the first data; and output the combined data.