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.

公开(公告)号：US20200382139A1

公开(公告)日：2020-12-03

申请号：US16998528

申请日：2020-08-20

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

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

IPC分类号： H03M13/25 ,  H03M13/11 ,  H03M13/00 ,  H04L1/00 ,  H04L5/00

摘要： An apparatus for a station (STA) configured for operating in a next-generation (NG) wireless local area network (WLAN) comprises the processing circuitry configured to modify probabilities of constellation points to generate a more Gaussian distribution. In these embodiments, for LDPC framing and OFDM packing, the transmitter circuitry may be configured to compute a number of output bits (bout) to be transmitted based on a number of payload bits (bin) at an output of a shaping encoder, a shaping rate (rshaping), and an overhead percent (Boverhead). A shaping gain of up to 1.53 dB may be achieved. A new shaping encoder is provided to address the issue that the number of bits is not fixed.

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：US20190159207A1

公开(公告)日：2019-05-23

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

CPC分类号： H04W72/0453 ,  H04L5/00 ,  H04L5/005 ,  H04L5/0053

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：US20210119673A1

公开(公告)日：2021-04-22

申请号：US17134395

申请日：2020-12-26

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

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

IPC分类号： H04B7/0452 ,  H04W72/12

摘要： This disclosure describes systems, methods, and devices related to enhanced tone allocation. A device may schedule a number of station devices to be included in a physical layer (PHY) protocol data unit (PPDU) for a multiple-user multiple-input multiple-output (MU-MIMO) transmission. The device may limit a number of resource units (RUs) to be used in the PPDU for the MU-MIMO transmission. The device may use a minimum RU size to be at least 242 tones for the MU-MIMO transmission. The device may cause to send the PPDU to the number of station devices.

公开(公告)号：US20200169841A1

公开(公告)日：2020-05-28

申请号：US16746462

申请日：2020-01-17

申请人： Dibakar Das ,  Jonathan Segev ,  Chittabrata Ghosh ,  Ganesh Venkatesan ,  Feng Jiang ,  Qinghua Li ,  Xiaogang Chen ,  Eran Segev ,  Huaning Niu ,  Shlomi Vituri ,  Elad Oren ,  Chen Kojokaro

发明人： Dibakar Das ,  Jonathan Segev ,  Chittabrata Ghosh ,  Ganesh Venkatesan ,  Feng Jiang ,  Qinghua Li ,  Xiaogang Chen ,  Eran Segev ,  Huaning Niu ,  Shlomi Vituri ,  Elad Oren ,  Chen Kojokaro

IPC分类号： H04W4/02 ,  H04W52/24 ,  H04W24/10

摘要： Methods, apparatuses, and computer readable media for report identification and power control for ranging in a wireless network are disclosed. An apparatus of a responding station (RSTA) is disclosed, where the apparatus comprises processing circuitry configured to perform ranging with a initiating stations (ISTAs) and maintain a separate sounding dialogue token for each of the ISTAs and transmit a corresponding sounding dialogue token for a ISTA in a trigger frame for ranging and sounding or a null data packet announcement (NDPA) frame, and in a responding to initiating location measurement report. Apparatuses of RSTAs and ISTAS are disclosed that perform power control management during non-trigger-based ranging.

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：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.