公开(公告)号：US20110158337A1

公开(公告)日：2011-06-30

申请号：US12889651

申请日：2010-09-24

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

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

IPC分类号： H04L27/28 ,  H04L25/03 ,  H04B15/00

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 an OFDM transmitter and method of reducing the effects of interference on subcarriers in an OFDM system by symbol loading are disclosed herein. A linear transformation is performed on a group of two or more input data symbols that are mapped to different signal dimensions to generate a corresponding two or more output data symbols. Each of the output data symbols has an increased number of constellation points. Each output data symbol is configured for transmission within one of the different signal dimensions. The linear transformation is configured so that each of the two or more output data symbols carry the information of each of the input data symbols of the group. This coding together of input data symbols that are mapped to different signal dimensions may provide improved reliability against fading and severe interference. The different signal dimensions may comprise a frequency, a time and/or a space dimension.

摘要翻译： 本文公开了OFDM发射机的实施例和通过符号加载来减少OFDM系统中的干扰对子载波的影响的方法。 对映射到不同信号尺寸的两个或更多个输入数据符号的一组进行线性变换，以生成对应的两个或更多个输出数据符号。 每个输出数据符号具有增加的星座点数。 每个输出数据符号被配置为在不同信号尺寸之一内传输。 线性变换被配置为使得两个或更多个输出数据符号中的每一个携带组中的每个输入数据符号的信息。 将映射到不同信号尺寸的输入数据符号进行编码可以提供改善的抗衰落和严重干扰的可靠性。 不同的信号尺寸可以包括频率，时间和/或空间维度。

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：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。

公开(公告)号：US20220116142A1

公开(公告)日：2022-04-14

申请号：US17645448

申请日：2021-12-21

申请人： Xiaogang Chen ,  Thomas J. Kenney ,  Qinghua Li ,  Hao Song ,  Robert Stacey

发明人： Xiaogang Chen ,  Thomas J. Kenney ,  Qinghua Li ,  Hao Song ,  Robert Stacey

IPC分类号： H04L1/00 ,  H04L5/00

摘要： This disclosure describes mechanisms for performing rate matching in low-density parity check (LPDC) codes in a wireless network. A device may generate an Aggregated Media Access (MAC) Protocol Data Unit (AMPDU) payload having an AMPDU payload size associated with a number of bits. The device may omit pre-Forward Error Correction (FEC) padding of the AMPDU payload at a MAC layer by indicating the AMPDU payload size in a physical layer (PHY)-specific preamble. The device may then generate the PHY-specific preamble comprising the AMPDU payload size without the pre-FEC padding. The device may also calculate a number of Orthogonal Frequency Division Multiplexing (OFDM) symbols for containing the number of bits and transmit the PHY-specific preamble and the number of OFDM symbols to a station device.

公开(公告)号：US20210111935A1

公开(公告)日：2021-04-15

申请号：US17131468

申请日：2020-12-22

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

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

IPC分类号： H04L27/26 ,  H04W72/12

摘要： An apparatus of a station (STA) includes memory and processing circuitry coupled to the memory. The processing circuitry is configured to encode a capabilities element for transmission to an access point (AP). The capabilities element including a media access control (MAC) capabilities information field indicating a trigger frame MAC padding duration. The processing circuitry decodes an extremely high throughput (EHT) protocol data unit (PPDU) received in response to the capabilities element. The EHT PPDU includes an EHT trigger frame (EHT-TF) in a data portion of the EHT PPDU, a packet extension (PE) field, and a dummy orthogonal frequency division multiplexing (OFDM) symbol extending the PE field. The processing circuitry performs physical layer (PHY) and MAC processing of the EHT PPDU based on a duration of the dummy OFDM symbol.