公开(公告)号：US20240129174A1

公开(公告)日：2024-04-18

申请号：US18397940

申请日：2023-12-27

申请人： Qinghua Li ,  Hao Song ,  Juan Fang ,  Shlomi Vituri ,  Assaf Gurevitz ,  Danny Alexander ,  Robert J. Stacey

发明人： Qinghua Li ,  Hao Song ,  Juan Fang ,  Shlomi Vituri ,  Assaf Gurevitz ,  Danny Alexander ,  Robert J. Stacey

IPC分类号： H04L27/34 ,  H04L27/36

CPC分类号： H04L27/3405 ,  H04L27/36 ,  H04W84/12

摘要： A station (STA) configured for operation in a wireless local area network (WLAN) may implement an unequal Modulation and Coding Scheme (MCS) for Probabilistic Constellation Shaping using first and second shaping encoders. The first shaping encoder may encode a first segment of input bits for a first modulation order and generate a first shaped bit stream and the second shaping encoder may encode a second segment of input bits for a second modulation order to generate a second shaped bit stream. A first QAM symbol stream may be generated at least from the first shaped bit stream and from parity bits using the first modulation order and a second QAM symbol stream may be generated at least from the second shaped bit stream and from parity bits using the second modulation order. The STA may generate the parity bits from the first and second shaped bit streams with one or more LDPC encoders and may transmit the first and second QAM symbol streams within a PPDU.

公开(公告)号：US20240137154A1

公开(公告)日：2024-04-25

申请号：US18400461

申请日：2023-12-29

申请人： Qinghua Li ,  Hao Song ,  Danny Alexander ,  Shlomi Vituri ,  Assaf Gurevitz ,  Robert J. Stacey

发明人： Qinghua Li ,  Hao Song ,  Danny Alexander ,  Shlomi Vituri ,  Assaf Gurevitz ,  Robert J. Stacey

IPC分类号： H04L1/00 ,  H04L27/34 ,  H04W84/12

CPC分类号： H04L1/0063 ,  H04L1/0042 ,  H04L27/3483 ,  H04W84/12

摘要： A station (STA) configured for operation in a WLAN may perform bit scrambling on input bits to generate scrambled input bits and may perform probabilistic constellation shaping using a shaping encoder on the scrambled input bits. The shaping encoder may encode a segment of the scrambled input bits for a modulation order and generate a shaped bit stream. In these embodiments, the STA may generate a QAM symbol stream with a QAM modulator. The QAM symbol stream may be generated at least from the shaped bit stream and from parity bits using the modulation order. The STA may generate the parity bits from the shaped bit streams with a forward-error correction (FEC) encoder and may transmit the QAM symbol stream within a physical layer protocol data unit (PPDU). To address a potential byte boundary shift caused a decoding error at a receiving station, the STA may modify performance of the bit scrambling when probabilistic constellation shaping is performed.

公开(公告)号：US20240204907A1

公开(公告)日：2024-06-20

申请号：US18591689

申请日：2024-02-29

申请人： Hao Song ,  Qinghua Li ,  Po-Kai Huang ,  Shlomi Vituri ,  Assaf Gurevitz

发明人： Hao Song ,  Qinghua Li ,  Po-Kai Huang ,  Shlomi Vituri ,  Assaf Gurevitz

IPC分类号： H04L1/00

CPC分类号： H04L1/0003

摘要： For example, an AP may be configured to set RU allocation information for a user STA in an RU allocation subfield of a user field for the user STA. For example, the RU allocation information for the user STA may indicate an RU allocation for a TB UL transmission from the user STA. For example, the AP may be configured to set a 7-bit UL MCS subfield, for example, after the RU allocation subfield, to indicate a first MCS and a second MCS for the user STA. For example, the first MCS may be assigned to a first UL resource of the RU allocation for the user STA, and the second MCS may be assigned to a second UL resource of the RU allocation for the user STA. For example, the AP may be configured to transmit a trigger frame including the user field for the user STA.

公开(公告)号：US20240048265A1

公开(公告)日：2024-02-08

申请号：US18458781

申请日：2023-08-30

申请人： Hao Song ,  Qinghua Li ,  Juan Fang ,  Shlomi Vituri ,  Robert Stacey

发明人： Hao Song ,  Qinghua Li ,  Juan Fang ,  Shlomi Vituri ,  Robert Stacey

IPC分类号： H04L1/00

CPC分类号： H04L1/0005 ,  H04L1/003

摘要： For example, a transmitter may be configured to assign a stream of encoded data bits of a Physical layer (PHY) Protocol Data Unit (PPDU) to one or more sequences of encoded bit blocks for one or more spatial streams based on an Unequal Modulation and Coding Scheme (MCS) (UEM) assignment including an assignment of a plurality of MCSs to a plurality of frequency sub-blocks for the one or more spatial streams. For example, the transmitter may be configured to assign the one or more sequences of encoded bit blocks to the plurality of frequency sub-blocks for the one or more spatial streams.

公开(公告)号：US20240048269A1

公开(公告)日：2024-02-08

申请号：US18459185

申请日：2023-08-31

申请人： Juan Fang ,  Robert Stacey ,  Qinghua Li ,  Danny Alexander ,  Shlomi Vituri ,  Thomas J. Kenney ,  Shahrnaz Azizi

发明人： Juan Fang ,  Robert Stacey ,  Qinghua Li ,  Danny Alexander ,  Shlomi Vituri ,  Thomas J. Kenney ,  Shahrnaz Azizi

IPC分类号： H04L1/00

CPC分类号： H04L1/0042 ,  H04L1/0057 ,  H04L1/0003 ,  H04L1/0009

摘要： For example, a wireless communication Station (STA) may be configured to determine a data field processing setting for a data field of a Physical Layer (PHY) Protocol Data Unit (PPDU) such that a padding parameter value corresponding to the data field processing setting does not exceed a padding parameter threshold, wherein the data field processing setting includes at least one of a Modulation and Coding Scheme (MCS) index or a channel Bandwidth (BW) setting, wherein the padding parameter value corresponding to the data field processing setting is based on a number of pre Forward Error Correction (FEC) (pre-FEC) pad bits according to the data field processing setting; and to encode the data field according to a FEC coding using the number of pre-FEC pad bits according to the data field processing setting.

公开(公告)号：US20240031087A1

公开(公告)日：2024-01-25

申请号：US18479009

申请日：2023-09-30

申请人： Juan Fang ,  Po-Kai Huang ,  Danny Alexander ,  Shlomi Vituri ,  Qinghua Li

发明人： Juan Fang ,  Po-Kai Huang ,  Danny Alexander ,  Shlomi Vituri ,  Qinghua Li

IPC分类号： H04L5/00 ,  H04W72/0453

CPC分类号： H04L5/0039 ,  H04W72/0453 ,  H04L5/0007

摘要： For example, a non Access Point (AP) (non-AP) station (STA) may be configured to operate in a 40 Megahertz (MHz) operating mode, as a 40 MHz operating non-AP STA, which supports a 40 MHz operating channel width. For example, the 40 MHz operating non-AP STA may be capable to process allocation information from an AP to identify a Resource Unit (RU) or Multiple RU (MRU) (RU/MRU) allocated to the 40 MHz operating non-AP STA within the 40 MHz operating channel width; and to communicate data over the RU/MRU allocated to the 40 MHz operating non-AP STA as part of a wider bandwidth Orthogonal Frequency Division Multiple Access (OFDMA) transmission over a channel bandwidth of at least 80 MHz.

公开(公告)号：US10667265B2

公开(公告)日：2020-05-26

申请号：US16251010

申请日：2019-01-17

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

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

IPC分类号： H04W72/04 ,  H04L5/00

摘要： 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：US20210099249A1

公开(公告)日：2021-04-01

申请号：US17118587

申请日：2020-12-10

申请人： Qinghua Li ,  Xiaogang Chen ,  Assaf Gurevitz ,  Feng Jiang ,  Elad Meir ,  Shlomi Vituri ,  Yaron Yoffe

发明人： Qinghua Li ,  Xiaogang Chen ,  Assaf Gurevitz ,  Feng Jiang ,  Elad Meir ,  Shlomi Vituri ,  Yaron Yoffe

IPC分类号： H04L1/00 ,  H04L5/00 ,  H04W72/04

摘要： This disclosure describes systems, methods, and devices related to fixed-to-fixed shaping encoding. A device may determine a mapping table associated with uniformly distributed bits into amplitudes with desired probabilities. The device may predict a number of output bits for an input block. The device may apply padding as needed based on the predicted number of output bits.

公开(公告)号：US20210091991A1

公开(公告)日：2021-03-25

申请号：US17112916

申请日：2020-12-04

申请人： Yaron Yoffe ,  Assaf Gurevitz ,  Elad Meir ,  Shlomi Vituri ,  Qinghua Li ,  Feng Jiang ,  Xiaogang Chen

发明人： Yaron Yoffe ,  Assaf Gurevitz ,  Elad Meir ,  Shlomi Vituri ,  Qinghua Li ,  Feng Jiang ,  Xiaogang Chen

IPC分类号： H04L27/34 ,  H04L25/03 ,  H04L27/26 ,  H04L1/00

摘要： This disclosure describes systems, methods, and devices related to enhanced constellation shaping. A device may generate payload bits associated with a frame to be sent to a first station device. The device may generate a first output bits having a first length based on the application of a first mask of one or more masks to the payload bits. The device may generate a second output bits having a second length based on the application of a second mask of the one or more masks. The device may compare the first length of the first output bits to the second length of the second output bits. The device may select the first mask or the second mask based on the comparison. The device may convert the payload bits using the selected mask before passing through a shaping encoder to generate shaped bits. The device may cause to send the frame bits and an indication of the selected mask to the first station device.

公开(公告)号：US20210091886A1

公开(公告)日：2021-03-25

申请号：US17110611

申请日：2020-12-03

申请人： Yaron Yoffe ,  Assaf Gurevitz ,  Elad Meir ,  Shlomi Vituri ,  Qinghua Li ,  Feng Jiang ,  Xiaogang Chen

发明人： Yaron Yoffe ,  Assaf Gurevitz ,  Elad Meir ,  Shlomi Vituri ,  Qinghua Li ,  Feng Jiang ,  Xiaogang Chen

IPC分类号： H04L1/00 ,  H04L27/04

摘要： This disclosure describes systems, methods, and devices related to enhanced constellation shaping. A device may generate payload bits associated with a frame, wherein the payload bits comprise a first portion and a second portion. The device may send the first portion of the payload bits through a shaping encoder. The device may generate shaped bits from the shaping encoder. The device may determine a number of amplitude bits based on the shaped bits. The device may generate parity bits from the shaped bits and the second portion going through an low-density parity-check (LDPC) encoder. The device may select sign bits comprising the second portion and a first subset of the parity bits. The device may send the amplitude bits with the sign bits to a modulator before transmitting the frame to a first station device.