公开(公告)号：US10667265B2

公开(公告)日：2020-05-26

申请号：US16251010

申请日：2019-01-17

Applicant: Xiaogang Chen ,  Shlomi Vituri ,  Assaf Gurevitz ,  Qinghua Li ,  Feng Jiang

Inventor： Xiaogang Chen ,  Shlomi Vituri ,  Assaf Gurevitz ,  Qinghua Li ,  Feng Jiang

IPC: H04W72/04 ,  H04L5/00

Abstract: This disclosure describes systems, methods, and devices related to tone mapping for a high-efficiency (HE) trigger-based (TB) null data packet (NDP) feedback physical layer protocol data unit (PPDU). A device may identify a frame received from a second device. The device may determine, based on the frame, a resource unit allocated to the device, wherein the resource unit is associated with a 20 MHz sub-channel of a bandwidth. The device may determine, based on the resource unit and the bandwidth, tones associated with a HE short training field (HE-STF) of a HE TB NDP feedback PPDU. The device may send the HE TB NDP feedback PPDU to the second device in the 20 MHz sub-channel, wherein the HE TB NDP feedback PPDU includes the tones.

公开(公告)号：US20190132879A1

公开(公告)日：2019-05-02

申请号：US16233071

申请日：2018-12-26

Applicant: Xiaogang CHEN ,  Qinghua LI ,  Feng JIANG ,  Po-Kai HUANG ,  Assaf GUREVITZ

Inventor： Xiaogang CHEN ,  Qinghua LI ,  Feng JIANG ,  Po-Kai HUANG ,  Assaf GUREVITZ

IPC: H04W74/08 ,  H04B7/0452

Abstract: This disclosure describes systems, methods, and devices related to scrambler initialization for multi-user (MU) clear to send (CTS) transmission. A first device may identify a MU request to send (RTS) frame received from a second device. The first device may determine an initial state of a scrambler based on the first 7 bits of a service field of the MU-RTS frame. The first device may cause first data to be scrambled, using the initial state of the scrambler, resulting in second data. The first device may cause to send a MU-CTS frame that comprises the second data to the second device.

公开(公告)号：US20140247861A1

公开(公告)日：2014-09-04

申请号：US13995785

申请日：2011-12-27

Applicant: Amir Rubin ,  Assaf Gurevitz ,  Gil Paryanti

Inventor： Amir Rubin ,  Assaf Gurevitz ,  Gil Paryanti

IPC: H04B1/12 ,  H04L27/26 ,  H04L25/03

CPC classification number: H04B1/12 ,  H04L25/03159 ,  H04L25/03993 ,  H04L27/2647 ,  H04L27/2657 ,  H04L27/2671 ,  H04L2027/003 ,  H04L2027/0034 ,  H04L2027/0038 ,  H04L2027/0046 ,  H04L2027/0067 ,  H04L2027/0085

Abstract: Fractional symbol based phase noise mitigation, including methods and systems to determine phase noise trajectory, or indication of phase noise, for each of multiple fractional portions of a frequency domain symbol, and modify the symbol based on the phase noise trajectories of the subsets. Multiple correction hypotheses may be generated for each fractional portion of the symbol based on pre-defined phase noise hypotheses. The correction hypotheses may include frequency domain correction hypotheses. The correction hypotheses for a subset may be evaluated to select one of the phase noise hypotheses as the trajectory for the subset. The evaluation may include applying each correction hypothesis to a corresponding equalized frequency domain symbol to generate corresponding symbol hypotheses, computing a signal quality for each symbol hypothesis, and comparing the signal qualities. Signal qualities may be determined as error vector magnitudes, and may be based on all or a subset of corresponding symbol tones.

Abstract translation: 基于分数符号的相位噪声减轻，包括确定相位噪声轨迹的方法和系统，或对于频域符号的多个小数部分中的每一个的相位噪声的指示，以及基于子集的相位噪声轨迹修改符号。 可以基于预定义的相位噪声假设为符号的每个小数部分生成多个校正假设。 修正假设可能包括频域校正假设。 可以评估子集的校正假设以选择相位噪声假设之一作为子集的轨迹。 评估可以包括将每个校正假设应用于对应的均衡频域符号以产生相应的符号假设，计算每个符号假设的信号质量，以及比较信号质量。 信号质量可以被确定为误差矢量幅度，并且可以基于相应符号音调的全部或一个子集。

公开(公告)号：US08132085B2

公开(公告)日：2012-03-06

申请号：US11858471

申请日：2007-09-20

Applicant: Assaf Gurevitz ,  Uri Perlmutter ,  Tzahi Weisman ,  Assi Jakoby

Inventor： Assaf Gurevitz ,  Uri Perlmutter ,  Tzahi Weisman ,  Assi Jakoby

IPC: H03M13/03

CPC classification number: H04L69/22

Abstract: A method and apparatus for decoding a frame control header message in a wireless communication transmission are disclosed. The method comprises assuming at least some of the bits comprising the frame control header message are constant across multiple frames or are known a priori and generating metrics at least from the bits of the frame control header message that are assumed to be constant or are known a priori. The method further comprises decoding the metrics, for example, with a Viterbi decoder or using chase combining, to yield the decode frame control header message.

Abstract translation: 公开了一种在无线通信传输中对帧控制报头消息进行解码的方法和装置。 该方法包括假设包括帧控制报头消息的至少一些比特在多个帧中是恒定的，或者是先验已知的，并且至少从帧控制报头消息的比特中产生度量，该比特被假定为恒定的或已知的 先验的 该方法还包括例如使用维特比解码器或使用追踪合并来解码度量，以产生解码帧控制报头消息。

公开(公告)号：US07411898B2

公开(公告)日：2008-08-12

申请号：US10956356

申请日：2004-09-30

Applicant: Yossi Erlich ,  Assaf Gurevitz ,  Eyal Hochdorf

Inventor： Yossi Erlich ,  Assaf Gurevitz ,  Eyal Hochdorf

IPC: H04J11/00

CPC classification number: H04L25/03866 ,  H04B2001/71563 ,  H04L5/0007 ,  H04L5/0096 ,  H04L27/2613 ,  H04W84/12 ,  H04W99/00

Abstract: Preamble generator for a multiband frequency division multplexing (OFDM) tranceiver of a wireless personal area network (WPAN) being switchable between a time frequency interleaving (TFI)-mode wherein data packets are transmitted by said transceiver in different frequency bands according to a predetermined frequency hopping pattern and a fixed frequency interleaving (FFI) mode wherein data packets are transmitted by the transceiver in at least one fixed frequency band, wherein said preamble generator scrambles in the fixed frequency interleaving (FFI) mode a predetermined preamble of the data packets by multiplying said preamble with a pseudo random data sequence to flatten a power spectrum of said preamble.

Abstract translation: 用于无线个域网（WPAN）的多频分频多址（OFDM）收发器的前导码发生器，可在时间频率交织（TFI）模式之间切换，其中数据分组根据预定频率在不同频带中由所述收发机发送 跳频模式和固定频率交织（FFI）模式，其中数据分组由收发机在至少一个固定频带中发送，其中所述前导码生成器以固定频率交织（FFI）模式加扰数据分组的预定前导码， 所述前同步码具有伪随机数据序列，以平坦化所述前同步码的功率谱。

公开(公告)号：US20240223342A1

公开(公告)日：2024-07-04

申请号：US18090803

申请日：2022-12-29

Applicant: Assaf Gurevitz ,  Tal Ilani ,  Gadi Shor ,  Uri Perlmutter ,  Itamar Borochow ,  Maxim Stepanov

Inventor： Assaf Gurevitz ,  Tal Ilani ,  Gadi Shor ,  Uri Perlmutter ,  Itamar Borochow ,  Maxim Stepanov

IPC: H04L5/00 ,  H04B7/06 ,  H04W72/0453

CPC classification number: H04L5/0062 ,  H04B7/0691 ,  H04W72/0453

Abstract: Described herein is an apparatus having at least two antennas to communicate over multiple communication channels. The apparatus can further include processing circuitry coupled to the at least two antennas to measure isolation in the communication channels while the communication channels are operating in a radar mode to select a channel having highest isolation among the communication channels. The processing circuitry can further perform radar detection over the channel having highest isolation. Other systems and methods are described.

公开(公告)号：US20230403125A1

公开(公告)日：2023-12-14

申请号：US18344745

申请日：2023-06-29

Applicant: Hao Song ,  Qinghua Li ,  Robert Stacey ,  Assaf Gurevitz ,  Thomas J. Kenney

Inventor： Hao Song ,  Qinghua Li ,  Robert Stacey ,  Assaf Gurevitz ,  Thomas J. Kenney

IPC: H04L5/00

CPC classification number: H04L5/0094 ,  H04L5/0044 ,  H04L5/0037

Abstract: For example, an Access Point (AP) may be configured to set Resource Unit (RU) allocation information in a Signal (SIG) field, the RU allocation information configured to indicate an RU allocation for a user; to set Unequal Modulation and Coding Scheme (MCS) (UEM) information for the user in the SIG field, the UEM information for the user configured to indicate an assignment of a plurality of MCSs to a plurality of frequency sub-channels in the RU allocation for the user, respectively; and to transmit a Downlink (DL) Physical layer (PHY) Protocol Data Unit (PPDU) including the SIG field and a data field for the user, wherein the data field for the user is configured according to the assignment of the plurality of MCSs to the plurality of frequency sub-channels in the RU allocation for the user.

公开(公告)号：US20220029735A1

公开(公告)日：2022-01-27

申请号：US17124792

申请日：2020-12-17

Applicant: Xiaogang Chen ,  Qinghua Li ,  Thomas J. Kenney ,  Assaf Gurevitz ,  Avishay Friedman

Inventor： Xiaogang Chen ,  Qinghua Li ,  Thomas J. Kenney ,  Assaf Gurevitz ,  Avishay Friedman

IPC: H04L1/00

Abstract: An extremely high-throughput (EHT) station (STA) may encode an EHT PPDU for transmission on a plurality of subchannels. The EHT STA may determine a spectral mask to apply to the EHT PPDU prior to transmission of the EHT PPDU. When preamble puncturing is performed, the EHT STA may apply an overall spectral mask to the EHT PPDU prior to transmission. The overall spectral mask may be based on an interim spectral mask and a preamble-puncture spectral mask. The subchannels may be in a 6 GHz band and the EHT STA may determine if preamble puncturing is to be performed for one or more of the subchannels based on a presence of incumbents in the one or more of the subchannels, although the scope of the embodiments is not limited in this respect.

公开(公告)号：US20210068104A1

公开(公告)日：2021-03-04

申请号：US17010340

申请日：2020-09-02

Applicant: Xiaogang Chen ,  Uri Perlmutter ,  Ilan Sutskover ,  Assaf Gurevitz ,  Qinghua Li ,  Thomas J. Kenney ,  Feng Jiang ,  Laurent Cariou

Inventor： Xiaogang Chen ,  Uri Perlmutter ,  Ilan Sutskover ,  Assaf Gurevitz ,  Qinghua Li ,  Thomas J. Kenney ,  Feng Jiang ,  Laurent Cariou

IPC: H04W72/04 ,  H04W84/12

Abstract: Embodiments of an access point (AP) station (STA) configured for operating in a next-generation (NG) wireless local area network (WLAN) (i.e., EHT) are generally described herein. In some embodiments, a comb resource unit (RU) structure may be used to distribute tones of an RU across a wider bandwidth for narrow RU power spectral density (PSD) boosting for longer-range transmission in EHT to meet ETSI and/or FCC limitations.

公开(公告)号：US20190141537A1

公开(公告)日：2019-05-09

申请号：US16233054

申请日：2018-12-26

Applicant: Feng Jiang ,  Qinghua Li ,  Jonathan Segev ,  Assaf Gurevitz ,  Danny Alexander ,  Xiaogang Chen

Inventor： Feng Jiang ,  Qinghua Li ,  Jonathan Segev ,  Assaf Gurevitz ,  Danny Alexander ,  Xiaogang Chen

IPC: H04W12/12 ,  H04W64/00 ,  H04W24/10 ,  H04L25/02 ,  H04K3/00 ,  G01S13/76

Abstract: This disclosure describes systems, methods, and devices related to an invalid location measurement report (LMR) indication. A device may identify a first null data packet (NDP) received from a first station device during, wherein the first NDP is used for channel sounding. The device may perform a time of arrival (ToA) calculation based on the NDP. The device may determine an invalid indication associated with the first NDP based on the ToA calculation. The device may generate an LMR comprising of the invalid measurement indication. The device may cause to send the LMR to the first device.