公开(公告)号：US20170126293A1

公开(公告)日：2017-05-04

申请号：US15121263

申请日：2014-03-28

申请人： Xiaogang CHEN ,  Eldad Perahia ,  Honggang Li ,  Qinghua Li ,  Thomas J. Kenney

发明人： Xiaogang CHEN ,  Eldad Perahia ,  Honggang Li ,  Qinghua Li ,  Thomas J. Kenney

IPC分类号： H04B7/0452 ,  H04B7/0404

CPC分类号： H04B7/0452 ,  H04B7/0404 ,  H04L69/323 ,  H04W80/02

摘要： Disclosed in some examples are devices (e.g., APs, STAs, and the like), methods, and machine readable mediums which provide for proper channel estimation and frame reception in Uplink MU-MIMO systems by changing the way transmission parameters from the VHT-SIG-A are communicated to the recipients in the preamble. The transmission parameters contained in the VHT-SIG-A field may be communicated to the STAs in advance of the MU-MIMO transmissions. In other examples the transmission parameters contained in the VHT-SIG-A field may be moved to locations in the preamble that come after the VHT-STF and VHT-LTF so that the transmission parameters may be decoded.

公开(公告)号：US20230023324A1

公开(公告)日：2023-01-26

申请号：US17956866

申请日：2022-09-30

申请人： Juan Fang ,  Qinghua Li ,  Po-Kai Huang ,  Thomas J. Kenney ,  Robert Stacey

发明人： Juan Fang ,  Qinghua Li ,  Po-Kai Huang ,  Thomas J. Kenney ,  Robert Stacey

IPC分类号： H04L27/26 ,  H04L5/00

摘要： For example, a wireless communication device may be configured to generate, transmit, receive and/or process one or more transmissions of an Extra Range (ER) Physical layer (PHY) Protocol Data Unit (PPDU), which may be configured to be decodable by ER wireless communication stations (STAs). For example, the ER PPDU may include an ER preamble. For example, the ER preamble may be configured to include an ER STF (ER-STF), an ER LTF (ER-LTF) after the ER-STF, and an ER Signal (ER-SIG) field after the ER-LTF. In one example, the ER PPDU may include a non-ER preamble, which may be configured to be decodable by non-ER STAs, which may not be capable of decoding the ER preamble.

公开(公告)号：US20210409181A1

公开(公告)日：2021-12-30

申请号：US17470413

申请日：2021-09-09

申请人： Xiaogang Chen ,  Qinghua Li ,  Thomas J. Kenney

发明人： Xiaogang Chen ,  Qinghua Li ,  Thomas J. Kenney

IPC分类号： H04L5/00 ,  H04W72/12 ,  H04W72/04 ,  H04L29/06

摘要： This disclosure describes systems, methods, and devices related to extremely high throughput (EHT) trigger based (TB) preamble. A device may receive a trigger frame from an associated access point (AP), wherein the trigger frame comprises one or more resource unit (RU) bandwidths (BWs) allocated to the device. The device may generate an EHT physical layer protocol data unit (PPDU) based on receiving the trigger frame from the access point, wherein the PPDU comprises an EHT preamble that includes a signaling (U-SIG) field. The device may encode the U-SIG field with an indication of one or more resource unit (RU) bandwidth (BW) allocations to be used for sending the PPDU to the AP, wherein the indication is a value associated with a first option of one or more options of selectable RU BWs. The device may cause to send the PPDU to the AP and an uplink data transmission direction.

公开(公告)号：US20210266121A1

公开(公告)日：2021-08-26

申请号：US17313919

申请日：2021-05-06

申请人： Xiaogang Chen ,  Qinghua Li ,  Feng Jiang ,  Thomas J. Kenney

发明人： Xiaogang Chen ,  Qinghua Li ,  Feng Jiang ,  Thomas J. Kenney

IPC分类号： H04L5/00 ,  H04W72/04

摘要： For example, an Extremely High Throughput (EHT) wireless communication station (STA) may be configured to set a Resource Unit (RU) allocation subfield in an EHT Signal (SIG) field to indicate an RU assignment for an Orthogonal Frequency Division Multiple Access (OFDMA) EHT Physical layer (PHY) Protocol Data Unit (PPDU) according to a predefined RU allocation table, the RU assignment for the OFDMA EHT PPDU comprising a Multiple Resource Unit (MRU) comprising a plurality of RUs; and transmit the OFDMA EHT PPDU comprising the EHT SIG field.

公开(公告)号：US20210067285A1

公开(公告)日：2021-03-04

申请号：US17094779

申请日：2020-11-10

申请人： Laurent Cariou ,  Nir Balaban ,  Daniel Bravo ,  Dor Chay ,  Xiaogang Chen ,  Feng Jiang ,  Thomas J. Kenney ,  Qinghua Li ,  Ehud Reshef

发明人： Laurent Cariou ,  Nir Balaban ,  Daniel Bravo ,  Dor Chay ,  Xiaogang Chen ,  Feng Jiang ,  Thomas J. Kenney ,  Qinghua Li ,  Ehud Reshef

IPC分类号： H04L5/00 ,  H04L27/26 ,  H04W74/08

摘要： This disclosure describes systems, methods, and devices related to enhanced bandwidth selection for wireless devices. A device may generate a request frame with at least one of a first indication of a bandwidth for which a second device is to measure a first noise level or a second indication of a resource unit for which the second device is to measure a second noise level. The device may send the request frame to the second device. The device may identify a response frame received from the second device, the response frame having a third indication of the first noise level or the second noise level and a fourth indication of the bandwidth or the resource unit. The device may determine, based on the first noise level or the second noise level, a parameter associated with a subsequent frame to send to the second device.

公开(公告)号：US20200344582A1

公开(公告)日：2020-10-29

申请号：US16928330

申请日：2020-07-14

申请人： Thomas J. Kenney ,  Xiaogang Chen ,  Qinghua Li ,  Feng Jiang ,  Laurent Cariou ,  Bahareh Sadeghi

发明人： Thomas J. Kenney ,  Xiaogang Chen ,  Qinghua Li ,  Feng Jiang ,  Laurent Cariou ,  Bahareh Sadeghi

IPC分类号： H04W4/40 ,  H04W28/06 ,  H04L29/08 ,  H04L1/00

摘要： For example, a Next Generation Vehicular (NGV) wireless communication station (STA) may be configured to generate an NGV Physical Layer (PHY) Protocol Data Unit (PPDU) including an NGV preamble, the NGV preamble comprising a non High-Throughput (non-HT) Short Training Field (L-STF), a non-HT Long Training Field (L-LTF) after the L-STF, a non-HT Signal (L-SIG) field after the L-LTF, a Repeated L-SIG (RL-SIG) field after the L-SIG field, and an NGV Signal (NGV-SIG) field after the RL-SIG field, the NGV-SIG field including a version field configured to identify a version of the NGV PPDU; and to transmit the NGV PPDU over an NGV channel in an NGV wireless communication frequency band; and a memory to store information processed by the processor.

公开(公告)号：US20200008185A1

公开(公告)日：2020-01-02

申请号：US16566271

申请日：2019-09-10

申请人： Xiaogang Chen ,  Ilan Sutskover ,  Qinghua Li ,  Robert J. Stacey ,  Thomas J. Kenney ,  Feng Jiang

发明人： Xiaogang Chen ,  Ilan Sutskover ,  Qinghua Li ,  Robert J. Stacey ,  Thomas J. Kenney ,  Feng Jiang

IPC分类号： H04W72/04 ,  H04L29/06 ,  H04L27/20 ,  H04L5/00 ,  H04B7/0456

摘要： Methods, apparatuses, and computer readable media for tone plans and preambles for extremely high throughput (EHT) in a wireless network are disclosed. An apparatus of an EHT access point (AP) or EHT station (STA), where the apparatus includes processing circuitry configured to: encode a physical layer (PHY) protocol data unit (PPDU), the PPDU including a EHT preamble, the EHT preamble including a legacy preamble portion and a EHT preamble portion, the legacy preamble including a legacy short training field (L-SFT), a legacy long-training field (L-LTF), and a legacy signal field (L-SIG), the EHT preamble portion comprising an EHT short signal field (EHT S-SIG), the EHT S-SIG including a modulation and coding scheme (MCS) subfield indicating a MCS of a subsequent data portion. The PPDU may be transmitted on a distributed or contiguous resource unit (RU) allocation. The RU may be configured to not straddle two physical 20 MHz subchannels.

公开(公告)号：US20130243118A1

公开(公告)日：2013-09-19

申请号：US13895555

申请日：2013-05-16

申请人： Qinghua Li ,  Huaning Niu ,  Yuan Zhu ,  Xintian E. Lin ,  Xiaogang Chen ,  Alexei Davydov ,  Thomas J. Kenney ,  Eldad Perahia

发明人： Qinghua Li ,  Huaning Niu ,  Yuan Zhu ,  Xintian E. Lin ,  Xiaogang Chen ,  Alexei Davydov ,  Thomas J. Kenney ,  Eldad Perahia

IPC分类号： H04L25/08

CPC分类号： H04B7/0617 ,  H04B7/0413 ,  H04L1/0606 ,  H04L25/08 ,  H04L27/2626 ,  H04L27/2634 ,  H04L27/3444 ,  H04W52/10 ,  H04W52/146 ,  H04W52/36 ,  H04W72/082

摘要： Embodiments of a mobile device transmitter and methods for transmitting signals in different signal dimensions are generally disclosed herein. The mobile device transmitter comprises a mapper to map a block of two or more input modulation symbols to different signal dimensions comprising two or more spatial dimensions, and linear transform circuitry to perform a linear transform on the block of mapped input modulation symbols to generate a block of preceded complex-valued output symbols such that each output symbol carries some information of more than one input modulation symbol. The mobile device also comprises transmitter circuitry to generate time-domain signals from the blocks of precoded complex-valued output symbols for each of the spatial dimensions for transmission using the two or more antennas. The precoded complex-valued output symbols are mapped to different signal dimensions comprising at least different frequency dimensions prior to transmission.

摘要翻译： 移动设备发射机的实施例和用于在不同信号尺寸上传输信号的方法一般在此公开。 移动设备发射机包括映射器，以将两个或更多个输入调制符号的块映射到包括两个或更多个空间维度的不同信号维度，以及线性变换电路，用于对映射的输入调制符号块执行线性变换以产生块 之前的复值输出符号，使得每个输出符号携带多于一个输入调制符号的一些信息。 移动设备还包括发射机电路，用于根据用于使用两个或更多个天线进行传输的每个空间维度，从预编码的复值输出符号块生成时域信号。 预编码的复值输出符号被映射到在传输之前至少包括不同频率尺寸的不同信号尺寸。

公开(公告)号：US08446971B2

公开(公告)日：2013-05-21

申请号：US12861685

申请日：2010-08-23

申请人： Qinghua Li ,  Huaning Niu ,  Xintian E Lin ,  Yuan Zhu ,  Thomas J. Kenney ,  Eldad Perahia ,  Honggang Li

发明人： Qinghua Li ,  Huaning Niu ,  Xintian E Lin ,  Yuan Zhu ,  Thomas J. Kenney ,  Eldad Perahia ,  Honggang Li

IPC分类号： H04L27/28

CPC分类号： H04L25/03955 ,  H04B7/024 ,  H04B7/0452 ,  H04B7/0478 ,  H04B7/0482 ,  H04B7/0639 ,  H04B7/0641 ,  H04B7/066 ,  H04L2025/03414

摘要： Embodiments of a communication station and methods for efficiently providing channel feedback for MIMO communications over an OFDM channel are generally described herein. In some embodiments, receiving stations may perform a recursive differential quantization of channel information across time and/or frequency to generate quantized differential channel feedback. The quantized differential channel feedback from each receiving station may be used by a transmitting station to precode MIMO transmissions to one or more of the receiving stations. The quantized differential channel feedback may be either a quantized differential channel matrix or a quantized differential beamforming matrix.

摘要翻译： 通常在本文中描述通信站的实施例和用于在OFDM信道上有效地提供用于MIMO通信的信道反馈的方法。 在一些实施例中，接收站可以在时间和/或频率上执行信道信息的递归差分量化，以产生量化的差分信道反馈。 来自每个接收站的量化的差分信道反馈可以由发射站用于对接收站中的一个或多个的MIMO传输进行预编码。 量化的差分信道反馈可以是量化差分信道矩阵或量化差分波束形成矩阵。

公开(公告)号：US20120045003A1

公开(公告)日：2012-02-23

申请号：US12861685

申请日：2010-08-23

申请人： Qinghua Li ,  Huaning Niu ,  Xintian E. Lin ,  Yuan Zhu ,  Thomas J. Kenney ,  Eldad Perahia ,  Honggang Li

发明人： Qinghua Li ,  Huaning Niu ,  Xintian E. Lin ,  Yuan Zhu ,  Thomas J. Kenney ,  Eldad Perahia ,  Honggang Li

IPC分类号： H04L27/28

CPC分类号： H04L25/03955 ,  H04B7/024 ,  H04B7/0452 ,  H04B7/0478 ,  H04B7/0482 ,  H04B7/0639 ,  H04B7/0641 ,  H04B7/066 ,  H04L2025/03414

摘要： Embodiments of a communication station and methods for efficiently providing channel feedback for MIMO communications over an OFDM channel are generally described herein. In some embodiments, receiving stations may perform a recursive differential quantization of channel information across time and/or frequency to generate quantized differential channel feedback. The quantized differential channel feedback from each receiving station may be used by a transmitting station to precode MIMO transmissions to one or more of the receiving stations. The quantized differential channel feedback may be either a quantized differential channel matrix or a quantized differential beamforming matrix.

摘要翻译： 通常在本文中描述通信站的实施例和用于在OFDM信道上有效地提供用于MIMO通信的信道反馈的方法。 在一些实施例中，接收站可以在时间和/或频率上执行信道信息的递归差分量化，以产生量化的差分信道反馈。 来自每个接收站的量化的差分信道反馈可以由发射站用于对接收站中的一个或多个的MIMO传输进行预编码。 量化的差分信道反馈可以是量化差分信道矩阵或量化差分波束形成矩阵。