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公开(公告)号：WO2020233794A1
公开(公告)日：2020-11-26
申请号：PCT/EP2019/063096
申请日：2019-05-21
Applicant: HUAWEI TECHNOLOGIES CO., LTD. , PATURY, Shahar
Inventor： PATURY, Shahar , WEITZMAN, Avi , EZRI, Doron , HENCINSKI, Oren , JIANG, Xingfeng
IPC: H04W74/08
Abstract: The invention aims to increase the efficiency of the spatial reuse method in systems that allow multiple devices to use the same medium of a wireless network (in the same space, time and frequency). Accordingly, a system comprising a plurality of devices for a wireless network is provided. Each of the plurality of devices in the system is configured to: share an own potential transmission duration with the other devices, and perform an access method to gain direct access to a medium of the wireless network, in particular perform a CSMA/CA method, wherein the device gaining direct access to the medium is configured to: determine an shared transmission duration based on all the potential transmission durations, and publish the shared transmission duration to the other devices.
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公开(公告)号：WO2021233529A1
公开(公告)日：2021-11-25
申请号：PCT/EP2020/063929
申请日：2020-05-19
Applicant: HUAWEI TECHNOLOGIES CO., LTD. , KOBZANTSEV, Alexander
Inventor： PATURY, Shahar , EZRI, Doron , WEITZMAN, Avi , PAN, Chun , JIANG, Xingfeng , FENG, Bing
Abstract: A first transmitter device for use in a wireless network and arranged to transmit signals on a first channel is provided. The first transmitter device comprises a control unit arranged to identify at least a second transmitter device in the wireless network, transmitting on the first channel. The control unit is further arranged to obtain location information related to the location of a first user terminal communicating with the second transmitter device and suppress energy transmission from the first transmitter device, in at least a first direction selected to avoid interference with a signal transmitted by the at least second transmitter device.
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公开(公告)号：WO2021249652A1
公开(公告)日：2021-12-16
申请号：PCT/EP2020/066268
申请日：2020-06-12
Applicant: HUAWEI TECHNOLOGIES CO., LTD. , KLEIN, Shaul
Inventor： EZRI, Doron , WEITZMAN, Avi , JIANG, Xingfeng , NI, Yizhan , ZHANG, Li
Abstract: A receiver unit for use in a wireless network, includes a front-end module arranged to receive an incoming signal from an antenna. The incoming signal comprises a first frequency range corresponding to a desired channel and at least a second frequency range comprising an undesired signal. The receiver unit further comprises an adaptable filter unit arranged between the antenna and the front-end module, and includes at least one filter arranged to selectively attenuate the at least second frequency range, while letting the first frequency range through to the front-end module. The receiver unit further comprises a control unit arranged to control the adaptable filter unit to control the frequencies included in the first and/or the second frequency range.
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公开(公告)号：WO2021063520A1
公开(公告)日：2021-04-08
申请号：PCT/EP2019/076940
申请日：2019-10-04
Applicant: HUAWEI TECHNOLOGIES CO., LTD. , KOBZANTSEV, Alexander
Inventor： EZRI, Doron , WEITZMAN, Avi , PAN, Chun , JIANG, Xingfeng , FU, Jie
Abstract: A Multiple-Input Multiple-Output (MIMO) device and method are presented to simplify calibration of phase and/or amplitude mismatches between RF chains, necessary for accurate Angle of Arrival (AOA) measurement, comprising an array of multiple antennas and a circuitry configured to receive, using the array of multiple antennas, a plurality of calibration signals from a plurality of proximate wireless MIMO devices, calibrate the wireless MIMO device based on the received calibration signals and based on known directions from the wireless MIMO device to each of the proximate wireless MIMO devices, and drive the array of multiple antennas to emit a beam-formed calibration signal to each of the proximate wireless devices in order to enable each of the proximate wireless MIMO devices to calibrate itself.
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Patent Agency Ranking
公开(公告)号：WO2021213629A1
公开(公告)日：2021-10-28
申请号：PCT/EP2020/061050
申请日：2020-04-21
Applicant: HUAWEI TECHNOLOGIES CO., LTD. , WEITZMAN, Avi
Inventor： EZRI, Doron , MELZER, Ezer , PATURY, Shahar , JIANG, Xingfeng
Abstract: The invention relates to a wireless transmitter (301) configured to transmit data to a wireless receiver (303) using a selected modulation and coding scheme, MCS, of a plurality of selectable MCSs. Each selectable MCS defines an upper limit of an error vector magnitude, EVM, corresponding to an upper limit of a transmitted power of the wireless transmitter (301). The wireless transmitter (301) is configured to transmit data to the wireless receiver (303) using the selected MCS and an adjusted transmitted power that is larger or smaller than the upper limit of the transmitted power associated with the selected MCS, if the combined effects of an adjusted EVM and an adjusted received power at the wireless receiver (303) caused by the adjusted transmitted power of the wireless transmitter (301) result in an improved data transmission performance in comparison with a data transmission using a transmitted power equal to the upper limit of the transmitted power. Moreover, a corresponding method for transmitting data from the wireless transmitter (301) to the wireless receiver (303) is provided.
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公开(公告)号：WO2018077408A1
公开(公告)日：2018-05-03
申请号：PCT/EP2016/075874
申请日：2016-10-27
Applicant: HUAWEI TECHNOLOGIES CO., LTD. , KADICHEVITZ, Michael
Inventor： KADICHEVITZ, Michael , EZRI, Doron , WEITZMAN, Avi , JIANG, Xingfeng , RUAN, Wei , SUN, Fuqing , PAN, Xin
CPC classification number: H01Q21/28 , H01Q13/10 , H01Q21/0075 , H01Q21/062 , H01Q21/064 , H01Q21/24
Abstract: A dual-band multiple input multiple output (MIMO) antenna cell comprising a slot layer comprising a ground plane with an electrically conductive slot antenna cut in the ground plane and an electrically conductive microstrip dipole antenna located directly and symmetrically above the slot antenna. The dipole antenna comprises two radiating elements 5 that are symmetrically fed. Wherein the slot antenna is adapted to operate in a first frequency band of a dual band and the dipole antenna is adapted to operate in a second frequency band of the dual band.
Abstract translation: 包括缝隙层的双频带多输入多输出（MIMO）天线单元，所述缝隙层包括具有在接地平面中切割的导电缝隙天线的接地平面以及直接定位的导电微带偶极天线以及 对称地位于缝隙天线之上。 偶极天线包括两个对称地馈送的辐射元件5。 其中缝隙天线适于在双频带的第一频带中操作，并且偶极天线适于在双频带的第二频带中操作。
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公开(公告)号：WO2021032307A1
公开(公告)日：2021-02-25
申请号：PCT/EP2019/072534
申请日：2019-08-22
Applicant: HUAWEI TECHNOLOGIES CO., LTD. , KOBZANTSEV, Alexander
Inventor： EZRI, Doron , WEITZMAN, Avi , JIANG, Xingfeng , FU, Jie
IPC: G01S3/74
Abstract: The present disclosure relates to a radio station (300), in particular an access point, for client localization in a multipath indoor environment, wherein the radio station (300) comprises: a circular antenna array (201) comprising uniform circularly arranged antenna elements (202), wherein a first steering vector associated with the circular antenna array (201) represents relative phases of the antenna elements (202) of the circular antenna array (201), relatively to a reference point at an origin of the circular antenna array (201); and a processor (310) configured to: receive first input data (302) from the circular antenna array (201), wherein the first input data (302) comprises channel state information; transform the first input data (302) into second input data (312) using a transform (311) that transforms the first steering vector of the circular antenna array (201) into a second steering vector of a virtual linear antenna array comprising of uniform linearly arranged antenna elements, wherein the second steering vector of the virtual linear antenna array represents relative phases of the linearly arranged antenna elements, relatively to a reference antenna; and transform the second input data (312) into third input data (314) by using a transform (313) that transforms the second steering vector of the virtual linear antenna array into a third steering vector of a second virtual linear antenna array, comprising a larger number of antenna elements than the virtual linear antenna array, wherein the third steering vector of the second Virtual Antenna Array is a function of Angle Of Arrival and Time Of Flight; and determine an angle of arrival (316) of at least one path of the multipath indoor environment based on the third input data (314), by applying a two-dimensional MUSIC algorithm (315) over an Angle of Arrival and a Time of Flight domain over the third input data (314).
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公开(公告)号：WO2020253943A1
公开(公告)日：2020-12-24
申请号：PCT/EP2019/065907
申请日：2019-06-17
Applicant: HUAWEI TECHNOLOGIES CO., LTD. , WEITZMAN, Avi
Inventor： WEITZMAN, Avi , EZRI, Doron , PATURY, Shahar , HENCINSKI, Oren , KLAUSNER, Ohad , JIANG, Xingfeng
IPC: H04W74/08
Abstract: A device for a wireless network is disclosed. The device is configured to perform an access method, using a plurality of nodes, to gain access to a medium of the wireless network, wherein each node is associated with a different channel of the medium and the access method is performed by using separately each node. The device is further configured to transmit data using an active node that has gained access to the medium. Moreover, the device is further configured to, if another node also gains access to the medium after a determined time period from the access of the active node, control the active node to release the medium and to start the access method again, and control the other node to start transmitting data.
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公开(公告)号：WO2017206781A1
公开(公告)日：2017-12-07
申请号：PCT/CN2017/085742
申请日：2017-05-24
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： WEITZMAN, Avi , KLAUSNER, Ohad , EZRI, Doron , REZNIC, Zvi , JIANG, Xingfeng , ZHANG, Wei , RUAN, Wei
IPC: H04W28/22
CPC classification number: H04L1/0019 , H04L1/0003 , H04L1/0016
Abstract: There is provided a device for adapting a wireless transmission rate, comprising a transmitter, a processor adapted to perform the following for a transmission of each of sequential wireless local area network (WLAN) frames by the transmitter: estimate a packet Error Rate (PER) and/or Aggregation Error Rate (AER) for each of physical layer (PHY) rate values (according to frame size), estimate data transmit times each according to respective PER and/or AER and one of the PHY rate values, and select one of the PHY rate values for adaption of a wireless transmission rate of the transmitter in a following frame according to an analysis of the data transmit times.
Abstract translation: 提供了一种用于适配无线传输速率的设备，该设备包括发射机，适于执行以下操作的处理器，用于由发射机发送每个顺序无线局域网（WLAN）帧： 估计每个物理层（PHY）速率值（根据帧大小）的分组错误率（PER）和/或聚合错误率（AER），估计每个根据各自的PER和/或AER的数据传输时间，以及 PHY速率值，并且根据数据传输时间的分析选择PHY速率值中的一个以用于在后一帧中适配发射机的无线传输速率。
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