公开(公告)号：US11924818B2

公开(公告)日：2024-03-05

申请号：US18148104

申请日：2022-12-29

Applicant: QUALCOMM Incorporated

Inventor： Lin Yang ,  Bin Tian ,  Dung Ngoc Doan ,  Jialing Li Chen ,  Didier Johannes Richard Van Nee

IPC: H04W72/044 ,  H04L69/323

CPC classification number: H04W72/0466 ,  H04L69/323

Abstract: This disclosure provides methods, devices and systems for encoding data for wireless communication to achieve a desired amplitude distribution. Some implementations more specifically relate to performing an encoding operation to shape the amplitudes of the resultant symbols such that the amplitudes have a non-uniform distribution. In some implementations of the non-uniform distribution, the probabilities associated with the respective amplitudes generally increase with decreasing amplitude. Some implementations enable the tracking of MPDU boundaries to facilitate successful decoding by a receiving device. Additionally or alternatively, some implementations enable the determination of a packet length after performing the amplitude shaping, which enables a transmitting device to determine the number of padding bits to add to the payload and to signal the packet length to a receiving device so that the receiving device may determine the duration of the packet.

公开(公告)号：US11871446B2

公开(公告)日：2024-01-09

申请号：US18092361

申请日：2023-01-02

Applicant: QUALCOMM Incorporated

Inventor： Jialing Li Chen ,  Sameer Vermani ,  Lin Yang ,  Bin Tian ,  Vincent Knowles Jones, IV ,  Youhan Kim

IPC: H04W74/00 ,  H04L5/00 ,  H04W72/0453 ,  H04W72/0446 ,  H04L69/18 ,  H04L69/22 ,  H04W72/21 ,  H04W72/23 ,  H04W84/12

CPC classification number: H04W74/004 ,  H04L5/0053 ,  H04L5/0094 ,  H04L69/18 ,  H04L69/22 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/21 ,  H04W72/23 ,  H04W84/12

Abstract: This disclosure provides methods, devices and systems for wireless communication, and particularly, methods, devices and systems for including signaling regarding enhanced features of new wireless communication protocols. The signaling may be included in various portions of a physical layer preamble of a wireless transmission. In some implementations, the physical layer preamble may be used to indicate puncturing of subbands or content channels that may carry further signaling in accordance with preamble signaling designs of this disclosure. The physical layer preamble signaling be parallelized for different subchannels of a wireless channel that consists of multiple subchannels. Some implementations of the physical layer preambles may be used to multiplex different types of wireless local area network communications into different subsets of the plurality of subchannels of the wireless channel.

公开(公告)号：US11817981B1

公开(公告)日：2023-11-14

申请号：US17727634

申请日：2022-04-22

Applicant: QUALCOMM Incorporated

Inventor： Lin Yang ,  Bin Tian ,  Youhan Kim ,  Jialing Li Chen

IPC: H04L27/26 ,  H04L5/00 ,  H04W84/12 ,  H04W4/00

CPC classification number: H04L27/26025 ,  H04L27/2607 ,  H04L27/2628 ,  H04W84/12

Abstract: This disclosure provides methods, devices and systems for increasing carrier frequencies for wireless communications in wireless local area networks (WLANs). Some implementations more specifically relate to packet designs and numerologies that support wireless communications on carrier frequencies above 7 GHz. In some aspects, a wireless communication device may up-clock a physical layer (PHY) convergence protocol (PLCP) protocol data unit (PPDU) for transmission on carrier frequencies above 7 GHz, where the PPDU conforms to an existing PPDU format associated with carrier frequencies below 7 GHz. As used herein, the term “up-clocking” refers to increasing the frequency of a clock signal used to convert the PPDU between the frequency domain and the time domain. In some aspects, the up-clocking may result in a subcarrier spacing (SCS) greater than or equal to 1.2 MHz, where the SCS represents a spacing between the subcarriers on which a PHY preamble of the PPDU is modulated.

公开(公告)号：US11805428B2

公开(公告)日：2023-10-31

申请号：US17525687

申请日：2021-11-12

Applicant: QUALCOMM Incorporated

Inventor： Sameer Vermani ,  Bin Tian ,  Lin Yang

IPC: H04W16/28 ,  H04W56/00 ,  H04W72/04 ,  H04L1/16 ,  H04L25/02 ,  H04L1/1607 ,  H04W72/044

CPC classification number: H04W16/28 ,  H04L1/1642 ,  H04L25/0226 ,  H04W56/001 ,  H04W72/046

Abstract: This disclosure provides systems, methods, and apparatuses for concurrently transmitting beamformed data from each of a plurality of access points (APs) to a wireless station (STA). In some implementations, the plurality of APs may operate as a distributed antenna array, and carrier signals of the plurality of APs may be synchronized with each other. A beamforming steering matrix may be determined for each of the plurality of APs, and beamformed data may be concurrently transmitted from each of the plurality of APs to the STA based on corresponding ones of the plurality of beamforming steering matrices.

公开(公告)号：US11716757B2

公开(公告)日：2023-08-01

申请号：US17382242

申请日：2021-07-21

Applicant: QUALCOMM Incorporated

Inventor： Lin Yang ,  Bin Tian ,  Youhan Kim

IPC: H04W74/08 ,  H04L5/00 ,  H04W24/10 ,  H04W84/12

CPC classification number: H04W74/0808 ,  H04L5/001 ,  H04W24/10 ,  H04W84/12

Abstract: This disclosure provides methods, devices and systems for clear channel assessment (CCA). In one aspect a device performs a first clear channel assessment (CCA) check on a primary subchannel of a channel having a total bandwidth greater than or equal to 40 megahertz (MHz), a plurality of subchannels of the channel collectively spanning the total bandwidth of the channel, the plurality of subchannels including the primary subchannel and one or more secondary subchannels, the primary subchannel and the one or more secondary subchannels each having a bandwidth of 20 MHz, performs, on each of the one or more secondary subchannels, a respective second CCA check, and transmits a communication on the channel based on a status of each of the primary subchannel and the one or more secondary subchannels that is based on the performance of the respective second CCA check or the first CCA check.

公开(公告)号：US11711184B2

公开(公告)日：2023-07-25

申请号：US17493815

申请日：2021-10-04

Applicant: QUALCOMM Incorporated

Inventor： Lin Yang ,  Bin Tian ,  Qifan Chen ,  Youhan Kim

IPC: H04W28/06 ,  H04L5/00 ,  H04W52/28

CPC classification number: H04L5/0041 ,  H04L5/0048 ,  H04L5/0069 ,  H04W52/286

Abstract: This disclosure provides methods, devices and systems for increasing the transmit power of wireless communication devices operating on power spectral density (PSD)-limited wireless channels. Some implementations more specifically relate to LTF designs that support distributed transmissions. In some aspects, a transmitting device may obtain a sequence of values representing an LTF of a PPDU and may map the sequence of values to a number (N) of noncontiguous subcarrier indices of a plurality of subcarrier indices spanning a wireless channel according to a distributed tone plan. In some implementations, the transmitting device may modulate the sequence of values on N tones, representing a logical RU, and map the N tones to the N noncontiguous subcarrier indices, respectively. In some other implementations, the sequence of values may be obtained based on relative locations of the N noncontiguous subcarrier indices in the wireless channel.

公开(公告)号：US20230156780A1

公开(公告)日：2023-05-18

申请号：US18092361

申请日：2023-01-02

Applicant: QUALCOMM Incorporated

Inventor： Jialing Li Chen ,  Sameer Vermani ,  Lin Yang ,  Bin Tian ,  Vincent Knowles Jones, IV ,  Youhan Kim

IPC: H04W74/00 ,  H04L5/00 ,  H04W72/0453 ,  H04W72/0446 ,  H04L69/18 ,  H04L69/22 ,  H04W72/21 ,  H04W72/23

CPC classification number: H04W74/004 ,  H04L5/0053 ,  H04W72/0453 ,  H04W72/0446 ,  H04L5/0094 ,  H04L69/18 ,  H04L69/22 ,  H04W72/21 ,  H04W72/23 ,  H04W84/12

Abstract: This disclosure provides methods, devices and systems for wireless communication, and particularly, methods, devices and systems for including signaling regarding enhanced features of new wireless communication protocols. The signaling may be included in various portions of a physical layer preamble of a wireless transmission. In some implementations, the physical layer preamble may be used to indicate puncturing of subbands or content channels that may carry further signaling in accordance with preamble signaling designs of this disclosure. The physical layer preamble signaling be parallelized for different subchannels of a wireless channel that consists of multiple subchannels. Some implementations of the physical layer preambles may be used to multiplex different types of wireless local area network communications into different subsets of the plurality of subchannels of the wireless channel.

公开(公告)号：US11570654B2

公开(公告)日：2023-01-31

申请号：US17105349

申请日：2020-11-25

Applicant: QUALCOMM Incorporated

Inventor： Lin Yang ,  Bin Tian ,  Sameer Vermani ,  Stephen Jay Shellhammer ,  Dung Ngoc Doan ,  Jialing Li Chen

IPC: H04W28/02 ,  H04B7/0413 ,  H04L5/00 ,  H04B17/309 ,  H04W84/12

Abstract: This disclosure provides systems, methods, and apparatus for link adaptation in a wireless local area network (WLAN). A link adaptation test packet from a first WLAN device to a second WLAN device may be formatted as a multiple-input-multiple-output (MIMO) transmission and may include one or more test portions for link quality estimation of the MIMO transmission. A link quality estimation portion of the test packet may permit measurement of link quality for various spatial streams of the MIMO transmission. The link adaptation test packet may enable a fast rate adaptation of a communication link based on the impact of interference to the various spatial streams. The second WLAN device may provide feedback information regarding the one or more test portions. The feedback information may be used to determine a transmission rate for a subsequent transmission from the first WLAN device to the second WLAN device based on wireless channel conditions.

公开(公告)号：US11509508B2

公开(公告)日：2022-11-22

申请号：US17176517

申请日：2021-02-16

Applicant: QUALCOMM Incorporated

Inventor： Jialing Li Chen ,  Bin Tian ,  Lin Yang

IPC: H04L25/03

Abstract: This disclosure provides systems, methods, and apparatuses for wireless communication that can be used to reduce the peak-to-average power ratio (PAPR) of data transmissions by increasing the degree of randomness with which data is scrambled for transmission over a wireless medium. In some implementations, a transmitting device may determine a set of scrambling initialization bits, and may generate a scrambling sequence based on the set of scrambling initialization bits and an 11th-order polynomial. The transmitting device may provide an indication of the set of scrambling initialization bits in a physical layer convergence protocol (PLCP) protocol data unit (PPDU). The transmitting device may scramble one or more portions of the PPDU based on the scrambling sequence. The transmitting device may transmit the PPDU over a wireless medium. In some instances, the set of scrambling initialization bits consists of 11 bits, and may be included in a Service field of the PPDU.

公开(公告)号：US11277288B2

公开(公告)日：2022-03-15

申请号：US17163771

申请日：2021-02-01

Applicant: QUALCOMM Incorporated

Inventor： Dung Ngoc Doan ,  Lin Yang ,  Bin Tian

IPC: H04L27/04 ,  H04L27/06 ,  H04L1/00 ,  H04L27/00

Abstract: This disclosure provides methods, devices and systems for encoding data for wireless communication to achieve probabilistic amplitude shaping. In some implementations, a transmitting device may achieve a fixed information block length (N), at least in part, by iteratively encoding the information bits until the number of amplitude-shaped bits combined with the number of unshaped bits is greater than or equal to a maximum payload length. For example, the maximum payload length may be equal to N. If the resulting number of amplitude-shaped bits plus the number of unshaped bits is less than N, the transmitting device may add one or more padding bits to the information block to achieve the fixed information block length.