公开(公告)号：US20220338260A1

公开(公告)日：2022-10-20

申请号：US17844237

申请日：2022-06-20

Applicant: Dave A. Cavalcanti ,  Dibakar Das ,  Laurent Cariou ,  Dmitry Vadimovich Akhmetov ,  Shahrnaz Azizi ,  Xiaogang Chen ,  Gadi Shor ,  Ehud Reshef ,  Juan Fang

Inventor： Dave A. Cavalcanti ,  Dibakar Das ,  Laurent Cariou ,  Dmitry Vadimovich Akhmetov ,  Shahrnaz Azizi ,  Xiaogang Chen ,  Gadi Shor ,  Ehud Reshef ,  Juan Fang

IPC: H04W74/08

Abstract: An access point station (AP) communicates with a plurality of non-AP stations (STAs) within a synchronized transmission opportunity (S-TXOP). The S-TXOP may comprise an S-TXOP trigger followed by a plurality of S-TXOP slots. After transmission of the S-TXOP trigger, the AP may encode, for transmission within an S-TXOP slot, a downlink (DL) multi-user physical layer protocol data unit (DL MU-PPDU). The DL MU-PPDU may include a preamble followed by a data field. To indicate that a previously signaled resource unit (RU) allocation is to be used during the S-TXOP slot, the AP may encode the preamble to include an allocation ID of the previously signaled RU allocation in a signal field (SIG) of the preamble and to include a SIG-2 presence indicator to indicate that a second signal field (SIG-2) is not included in the preamble.

公开(公告)号：US20220224362A1

公开(公告)日：2022-07-14

申请号：US17707911

申请日：2022-03-29

Applicant: Xiaogang Chen ,  Thomas J. Kenney ,  Qingua Li ,  Robert Stacey ,  Shlomi Vituri

Inventor： Xiaogang Chen ,  Thomas J. Kenney ,  Qingua Li ,  Robert Stacey ,  Shlomi Vituri

IPC: H03M13/00 ,  H03M13/33 ,  H03M13/47

Abstract: This disclosure describes systems, methods, and devices related to over-puncture mitigation. A device may generate a frame comprising a payload having a payload size associated with a number of bits. The device may determine a low-density parity-check (LDPC) codeword size based on the payload size. The device may calculate a number of codewords based on the payload size. The device may calculate a number of shortening bits and a number of LDPC padding bits based on the number of codewords. The device may calculate a number of orthogonal frequency division multiplexing (OFDM) symbols for containing the number of codewords. The device may cause to send the frame with the number of OFDM symbols to a station device.

公开(公告)号：US20210409181A1

公开(公告)日：2021-12-30

申请号：US17470413

申请日：2021-09-09

Applicant: Xiaogang Chen ,  Qinghua Li ,  Thomas J. Kenney

Inventor： Xiaogang Chen ,  Qinghua Li ,  Thomas J. Kenney

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

Abstract: 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：US20210314205A1

公开(公告)日：2021-10-07

申请号：US17344201

申请日：2021-06-10

Applicant: Xiaogang Chen ,  Qinghua Li ,  Feng Jiang ,  Chen Kojokaro ,  Ziv Avital

Inventor： Xiaogang Chen ,  Qinghua Li ,  Feng Jiang ,  Chen Kojokaro ,  Ziv Avital

IPC: H04L27/26 ,  H04W28/06

Abstract: This disclosure describes systems, methods, and devices related to long packet extension signaling. A device may calculate a residual value based on a duration of a packet extension, a transmit time, and a signal extension time. The device may generate one or more data symbols of a frame to be transmitted to a station device (STA). The device may compare the residual value to a duration of a first data symbol of the one or more data symbols. The device may include a packet extension dis-ambiguity value to the frame based on the comparison. The device may cause to send the frame to the STA.

公开(公告)号：US20210099249A1

公开(公告)日：2021-04-01

申请号：US17118587

申请日：2020-12-10

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

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

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

Abstract: 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

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

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

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

Abstract: 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

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

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

IPC: H04L1/00 ,  H04L27/04

Abstract: 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

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

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

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

Abstract: 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：US20200169841A1

公开(公告)日：2020-05-28

申请号：US16746462

申请日：2020-01-17

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

Inventor： 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: H04W4/02 ,  H04W52/24 ,  H04W24/10

Abstract: 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：US20190306797A1

公开(公告)日：2019-10-03

申请号：US16381548

申请日：2019-04-11

Applicant: Shahrnaz Azizi ,  Thomas J. Kenney ,  Alexander W. Min ,  Po-Kai Huang ,  Vinod Kristem ,  Minyoung Park ,  Laurent Cariou ,  Xiaogang Chen

Inventor： Shahrnaz Azizi ,  Thomas J. Kenney ,  Alexander W. Min ,  Po-Kai Huang ,  Vinod Kristem ,  Minyoung Park ,  Laurent Cariou ,  Xiaogang Chen

IPC: H04W52/02 ,  H04W28/06

Abstract: Embodiments of an AP and wake up radio (WUR) non-AP station (STA) are generally described herein. The AP may transmit a WUR packet to wake up a wireless local area network (WLAN) radio of the WUR non-AP STA. A non-WUR portion of the WUR packet may include legacy fields and a BPSK mark to spoof high throughput (HT) devices receiving the WUR packet. The AP may transmit the BPSK mark in a channel that includes a lower guard band, a transmission bandwidth, and an upper guard band. The AP may encode the BPSK mark in accordance with: on-off keying (OOK) modulation in a center portion of the transmission bandwidth; and orthogonal frequency division multiplexing (OFDM) in a remaining portion of the transmission bandwidth that excludes the center portion.