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公开(公告)号：US20170111155A1
公开(公告)日：2017-04-20
申请号：US15390257
申请日：2016-12-23
Applicant: Huawei Technologies Co., Ltd.
Inventor： Sheng LIU , Teyan CHEN , Yu CAI
CPC classification number: H04L5/0055 , H04B1/10 , H04L5/0005 , H04L5/14 , H04L25/03 , H04W72/082 , H04W84/12 , H04W88/02 , H04W88/08
Abstract: Embodiments of the present invention relate to the field of communications technologies, and provide an interference cancellation apparatus and method, which can avoid being limited by a dynamic range of an ADC/DAC and can cancel a second-type self-interference component effectively. The interference cancellation apparatus includes a main receive antenna, a divider, a first-type interference canceller, a down converter, a filter, a coupler, a digital down-conversion unit, a second-type interference reconstructor, and a local-frequency signal generator. The present invention is used for interference cancellation.
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22.发明申请ADAPTIVE RADIO-FREQUENCY INTERFERENCE CANCELLING DEVICE, METHOD, AND RECEIVER 有权自适应无线电干扰消除装置，方法和接收器公开(公告)号：US20150311928A1
公开(公告)日：2015-10-29
申请号：US14790958
申请日：2015-07-02
Applicant: Huawei Technologies Co., Ltd.
Inventor： Teyan CHEN , Yinggang DU , Sheng LIU
IPC: H04B1/10
Abstract: The present invention provides an adaptive radio-interference cancelling device and method, a receiver, and a wireless full duplex communication system. The device includes an amplitude phase adjusting module, configured to adjust an amplitude and a phase of a radio-frequency reference signal and output a radio-frequency adjustment signal to enable the radio-frequency adjustment signal to converge to a self-interference signal in a radio-frequency received signal; a subtractor, configured to output a radio-frequency residual signal, where the radio-frequency residual signal is a difference signal between the radio-frequency received signal and the radio-frequency adjustment signal; and a baseband extracting and filtering module, configured to receive the radio-frequency reference signal and the radio-frequency residual signal output by the subtractor, extract baseband signals and perform least mean squares adaptive filtering processing on the baseband signals to obtain an amplitude phase control signal and output to the amplitude phase adjusting module.
Abstract translation: 本发明提供一种自适应无线电干扰消除装置和方法，接收机和无线全双工通信系统。 该装置包括幅度相位调整模块，被配置为调整射频参考信号的幅度和相位，并输出射频调整信号以使得射频调整信号能够收敛到自身干扰信号 射频接收信号; 减法器，被配置为输出射频残留信号，其中，所述射频残差信号是所述射频接收信号与所述射频调整信号之间的差信号; 以及基带提取和滤波模块，被配置为接收由所述减法器输出的所述射频参考信号和所述射频残余信号，提取基带信号并对所述基带信号执行最小均方自适应滤波处理以获得幅度相位控制 信号并输出到幅度相位调整模块。
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公开(公告)号：US20140050487A1
公开(公告)日：2014-02-20
申请号：US14063787
申请日：2013-10-25
Applicant: Huawei Technologies Co., Ltd.
IPC: H04B10/114
CPC classification number: H04B10/1149 , H04B10/00 , H04B10/1125 , H04B10/114 , H04B10/116 , H04L5/0007 , H04W28/06 , H04W72/00 , H04W72/04 , H04W88/08
Abstract: Embodiments of the present invention provide a wireless communication method, base station and system. The base station includes several LED lights and/or several VLC/IR receivers. The several LED lights are configured to send downlink signals in an OFDMA standard to a user terminal, and the several VLC/IR receivers are configured to receive uplink signals that are of an SC-FDMA standard and sent by the user terminal. The base station further includes a baseband signal processing unit configured to equate the several LED lights and/or the several VLC/IR receivers with radio remote units of an LTE mode to perform processing and resource management. The embodiments of the present invention are capable of reusing baseband signal processing and resource management manners in an existing LTE system, thereby simplifying resource management and baseband signal processing operations performed by the base station, and saving the base station resources.
Abstract translation: 本发明的实施例提供一种无线通信方法，基站和系统。 基站包括几个LED灯和/或几个VLC / IR接收器。 多个LED灯被配置为以OFDMA标准向用户终端发送下行链路信号，并且若干VLC / IR接收机被配置为接收由用户终端发送的SC-FDMA标准的上行链路信号。 基站还包括：基带信号处理单元，被配置为将多个LED灯和/或多个VLC / IR接收器与LTE模式的无线电远程单元相等，以执行处理和资源管理。 本发明的实施例能够在现有LTE系统中重用基带信号处理和资源管理方式，从而简化基站执行的资源管理和基带信号处理操作，并节省基站资源。
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公开(公告)号：US20140029952A1
公开(公告)日：2014-01-30
申请号：US14026865
申请日：2013-09-13
Applicant: Huawei Technologies Co., Ltd.
Inventor： Sheng LIU , Rongdao YU , Rui WANG
IPC: H04B10/116 , H04L27/26
CPC classification number: H04B10/116 , H04B7/0413 , H04B7/0617 , H04B10/40 , H04L5/0023 , H04L27/0008 , H04L27/2605 , H04L27/2697
Abstract: Embodiments of the present invention disclose a data transmission method and a related device and system. A data transmission method includes: A transmitter performs scrambling, constellation modulation, and multiple-input multiple-output precoding processing sequentially on downlink user data to obtain a precoded symbol sequence; performs time-frequency resource mapping on the precoded symbol sequence to obtain frequency domain data of an OFDM symbol; performs conjugate symmetric extension and IFFT on the frequency domain data of the OFDM symbol to obtain a time domain real-number sequence; performs CP insertion processing on the time domain real-number sequence to form a first downlink time domain baseband signal; loads the first downlink time domain baseband signal onto a direct current of a LED lighting circuit to form a LED driving electrical signal; and converts the LED driving electrical signal into a visible beam of the LED for transmission.
Abstract translation: 本发明的实施例公开了一种数据传输方法及相关设备和系统。 数据传输方法包括：发射机在下行用户数据上顺序执行加扰，星座调制和多输入多输出预编码处理，以获得预编码符号序列; 对预编码符号序列执行时频资源映射，以获得OFDM符号的频域数据; 对OFDM符号的频域数据进行共轭对称扩展和IFFT，以获得时域实数序列; 对时域实数序列执行CP插入处理，形成第一下行链路时域基带信号; 将第一下行链路时域基带信号加载到LED照明电路的直流电流上以形成LED驱动电信号; 并将LED驱动电信号转换成LED的可见光束以进行透射。
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公开(公告)号：US20130235960A1
公开(公告)日：2013-09-12
申请号：US13873940
申请日：2013-04-30
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Sheng LIU , Yinggang DU
IPC: H04B7/04
CPC classification number: H04B7/046 , H04B7/0634 , H04B7/0663
Abstract: A method and device for acquiring a precoding matrix are provided by the present invention. The method for acquiring a precoding matrix includes: for each receiving end, selecting the interference vectors as the interference space basis vectors from whole interference vectors, representing the remaining interference vectors as the linear combination of the interference space basis vectors, wherein the remaining interference vectors are the interference vectors in the whole interference vectors of the receiving end except the interference vectors which act as the interference space basis vectors (101); determining the currently used precoding matrix according to the linear combination of the interference space basis vectors represented by the remaining interference vectors of each receiving end and the current channel condition (102). The technical solution of the present invention can eliminate interference and do not generate Bit Error Rate (BER) floor.
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Patent Agency Ranking
公开(公告)号：US20130017852A1
公开(公告)日：2013-01-17
申请号：US13622196
申请日：2012-09-18
Applicant: Huawei Technologies Co., Ltd.
Inventor： Sheng LIU , Hong CHENG
CPC classification number: H04W88/085 , H04W24/02
Abstract: Embodiments of the present invention provide a communication system and management method thereof. The communication system includes: a radio transceiving layer, including a radio transceiving node combination, where the radio transceiving node combination includes at least one type of the following: a macro cell RRU, a Pico cell RRU, and a Pico cell BRU; a local computing layer, including a local computing node, connected to a radio transceiving node in one or multiple neighboring radio transceiving node combinations and configured to execute all communication processing or a first part of communication processing of a cell corresponding to the local computing node; a centralized computing layer, including a centralized computing node, connected to the local computing node in the local computing layer and configured to execute a second part of communication processing, where the all communication processing includes the first part and second part of communication processing.
Abstract translation: 本发明的实施例提供一种通信系统及其管理方法。 通信系统包括：无线电收发层，包括无线电收发节点组合，其中无线电收发节点组合包括以下的至少一种：宏小区RRU，微微小区RRU和微微小区BRU; 本地计算层，包括本地计算节点，其连接到一个或多个相邻无线电收发节点组合中的无线电收发节点，并被配置为执行与所述本地计算节点相对应的小区的所有通信处理或第一部分通信处理; 包括中央计算节点的集中计算层，连接到本地计算层中的本地计算节点，并被配置为执行通信处理的第二部分，其中全部通信处理包括第一部分和第二部分的通信处理。
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公开(公告)号：US20210067394A1
公开(公告)日：2021-03-04
申请号：US17018769
申请日：2020-09-11
Applicant: Huawei Technologies Co., Ltd.
Inventor： Meilu LIN , Sheng LIU , Wei LIN , Jian YU , Le LIU , Xun YANG , Shimon SHILO , Doron EZRI , Genadiy TSODIK , Oded REDLICH
Abstract: Embodiments of the present invention provide a physical layer protocol data unit PPDU transmission method and a corresponding PPDU transmission apparatus. Application of the method and apparatus in the embodiments of the present invention enables a receive end to quickly determine the starting position of the feature signal sequence by means of blind detection, and ensures that the receive end quickly completes data processing and status switching.
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公开(公告)号：US20210029742A1
公开(公告)日：2021-01-28
申请号：US17071549
申请日：2020-10-15
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yuchen GUO , Peng LIU , Sheng LIU
Abstract: A parallel transmission method and apparatus to improve channel resource utilization are described. A first configuration parameter for a first access point is configured by a WLAN control device. A second configuration parameter for a second access point is configured by the WLAN control device. The first configuration parameter is used to indicate that the first access point can send a first WLAN frame to at least one station in a first station set at a starting time by using a channel resource. The first station set includes one or more stations associated with the first access point. The second configuration parameter is used to indicate that the second access point can send a second WLAN frame to at least one station in a second station set at the starting time by using the channel resource. The second station set includes one or more stations associated with the second access point.
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29.发明申请公开(公告)号：US20200304358A1
公开(公告)日：2020-09-24
申请号：US16839520
申请日：2020-04-03
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Abstract: The present disclosure discloses an Internet of Things communication method. In the present disclosure, a downlink data frame sent by the network side device includes a legacy preamble, a HEW preamble, and a data field; a subcarrier resource that is corresponding to the data field in a frequency domain includes at least one resource unit RU; and the RU is used to send a downlink IoT frame to the IoT terminal, where the downlink IoT frame includes an IoT preamble and an IoT data field, the IoT preamble is used to transmit physical layer control information of the downlink IoT frame, and the IoT data field is used to transmit downlink data between the network side device and the IoT terminal. According to the present disclosure, a network side device in a WLAN can schedule an IoT terminal, thereby reducing a conflict risk in an IoT communication process.
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公开(公告)号：US20170180158A1
公开(公告)日：2017-06-22
申请号：US15448915
申请日：2017-03-03
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Sheng LIU
CPC classification number: H04L25/0228 , H04B7/0413 , H04L25/0204 , H04L25/023 , H04L27/2613
Abstract: Embodiments of the present invention provide a channel estimation method, a communications node, and a communications system. The method includes: obtaining a preamble in a signal packet sent by a first communications node, where the preamble includes at least a first field and a second field, a subcarrier of an orthogonal frequency division multiplexing OFDM symbol of the first field is used to carry a first reference signal, the first reference signal is a predetermined signal that is known to both a second communications node and the first communications node, a subcarrier of an OFDM symbol of the second field is used to carry useful information, and the useful information is physical layer control information and/or data; and obtaining, by using the first field and the second field, a first channel estimate, of each spatial flow, on all subcarriers of a multiple-input multiple-output transmission frequency band.
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