公开(公告)号：US11812464B2

公开(公告)日：2023-11-07

申请号：US18149123

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: H04L69/18 ,  H04W74/00 ,  H04L5/00 ,  H04W72/0453 ,  H04W72/0446 ,  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：US11799702B2

公开(公告)日：2023-10-24

申请号：US17200625

申请日：2021-03-12

Applicant: QUALCOMM Incorporated

Inventor： Yan Zhou ,  Bin Tian ,  Alfred Asterjadhi ,  George Cherian

IPC: H04L27/26 ,  H04L5/00 ,  H04L1/00 ,  H04W84/12

CPC classification number: H04L27/2602 ,  H04L1/0006 ,  H04L5/0044 ,  H04L5/0048 ,  H04L27/2605 ,  H04L27/2613 ,  H04L27/2646 ,  H04L5/0007 ,  H04L5/0055 ,  H04L27/2603 ,  H04L27/26132 ,  H04L27/26136 ,  H04W84/12

Abstract: Techniques are described herein that illustrate a feedback system to configure various format parameters of physical layer convergence procedure protocol data units (PPDUs) transmitted across a communication link. A receiving device may determine a Doppler shift or a delay spread of a signal received from a transmitting device. The receiving device may determine one or more format parameters for a future PPDU based on the Doppler shift or the delay spread. The receiving device may transmit an indication that includes the format parameters for the future PPDU to the transmitting device. The transmitting device may modify one or more format parameters of a PPDU based on the information in the indication. In some cases, the receiving device may indicate characteristics of mid-ambles, a type of PPDU, a guard interval, high efficiency long training field size for a future PPDU.

公开(公告)号：US20230337038A1

公开(公告)日：2023-10-19

申请号：US18304310

申请日：2023-04-20

Applicant: QUALCOMM Incorporated

Inventor： Jialing Li CHEN ,  Sameer Vermani ,  Bin Tian ,  Lin Yang

IPC: H04W28/02 ,  H04W28/06

CPC classification number: H04W28/0231 ,  H04W28/06

Abstract: This disclosure provides methods, devices and systems for generating packet preambles. Some implementations more specifically relate to preamble designs for special cases such as, for example, full-bandwidth multi-user multiple-input multiple-output (MU-MIMO), single-user (SU) preamble puncturing, hybrid automatic repeat request (HARD), and multi-AP coordination. Multi-AP coordination may refer to coordinated beamforming (CoBF), joint transmission (JT), or coordinated orthogonal frequency division multiple access (C-OFDMA). Additionally, or alternatively, some implementations more specifically relate to preamble designs that accommodate signal fields of different cases.

公开(公告)号：US20230318763A1

公开(公告)日：2023-10-05

申请号：US18327216

申请日：2023-06-01

Applicant: QUALCOMM Incorporated

Inventor： George Cherian ,  Alfred Asterjadhi ,  Abhishek Pramod Patil ,  Sameer Vermani ,  Bin Tian ,  Stephen Jay Shellhammer ,  Lochan Verma ,  Lin Yang ,  Jialing Li Chen

IPC: H04L5/00 ,  H04W16/14 ,  H04W72/044 ,  H04W74/08 ,  H04W72/27

CPC classification number: H04L5/0035 ,  H04L5/0007 ,  H04L5/0037 ,  H04W16/14 ,  H04W72/044 ,  H04W74/0808 ,  H04W72/27 ,  H04W88/08

Abstract: Methods, systems, and devices for wireless communications are described. An access point (AP) may transmit, to a second AP and during a first portion of a transmission opportunity (TxOP), a request to participate in a multi-user (MU) transmission. The AP may receive, from the second AP and during the first portion of the TxOP, an indication of intent to participate in the MU transmission during the second portion of the TxOP, the indication of intent including a resource request of the second AP for participation in the MU transmission. The AP may transmit, during an initial period of the second portion of the TxOP, a trigger signal to the second AP indicating a set of one or more resources for the second AP during the MU transmission. The AP may participate, in conjunction with the second AP and during the second portion of the TxOP, in the MU transmission.

公开(公告)号：US11764847B2

公开(公告)日：2023-09-19

申请号：US17238190

申请日：2021-04-22

Applicant: QUALCOMM Incorporated

Inventor： Simone Merlin ,  Alireza Raissinia ,  Bin Tian ,  Xiaoxin Zhang ,  Solomon Trainin ,  Assaf Kasher ,  Manish Madan ,  John Greszczuk

IPC: H04L25/02 ,  H04B7/06 ,  H04L5/00 ,  H04W74/08 ,  H04W80/02

CPC classification number: H04B7/0626 ,  H04B7/0617 ,  H04L5/0053 ,  H04L25/0226 ,  H04W74/0816 ,  H04W80/02

Abstract: This disclosure provides methods, devices and systems for radio frequency (RF) sensing in wireless communication systems. In some implementations, a transmitter device transmits sounding sequences configured for channel estimation over a wireless channel to a receiver device. The transmitter device also transmits or receives non-sounding frames associated with a channel report of the receiver device. The transmitter device transmits a frame soliciting the channel report from the receiver device. The transmitter device receives the channel report, which may include channel state information (CSI) of the wireless channel responsive to at least the sounding sequences. Some types of channel reports may take longer to generate than other types of channel reports. Transmitting or receiving the non-sounding frames during the time period may prevent other devices from accessing the wireless channel when the receiver device needs additional time to generate a certain type of channel report.

公开(公告)号：US11757564B2

公开(公告)日：2023-09-12

申请号：US17103550

申请日：2020-11-24

Applicant: QUALCOMM Incorporated

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

IPC: H04W24/08 ,  H04L1/00 ,  H04W84/12

CPC classification number: H04L1/0013 ,  H04L1/0003 ,  H04W24/08 ,  H04W84/12

Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer-readable media, for link adaptation in a wireless local area network (WLAN). A link adaptation test packet from a first WLAN device to a second WLAN may include a plurality of link adaptation test portions that are generated using a corresponding plurality of transmission rate options. For example, the plurality of link adaptation test portions may be modulated using different modulation and coding scheme (MCS) options. Thus, a single test packet may be used to evaluate different transmission rate options. The second WLAN device may provide feedback information regarding the link adaptation 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：US11711183B2

公开(公告)日：2023-07-25

申请号：US16559605

申请日：2019-09-03

Applicant: QUALCOMM Incorporated

Inventor： George Cherian ,  Alfred Asterjadhi ,  Abhishek Pramod Patil ,  Sameer Vermani ,  Bin Tian ,  Stephen Jay Shellhammer ,  Lochan Verma ,  Lin Yang ,  Jialing Li Chen

IPC: H04L5/00 ,  H04W16/14 ,  H04W72/044 ,  H04W74/08 ,  H04W72/27 ,  H04W88/08 ,  H04W84/12

CPC classification number: H04L5/0035 ,  H04L5/0007 ,  H04L5/0037 ,  H04W16/14 ,  H04W72/044 ,  H04W72/27 ,  H04W74/0808 ,  H04W84/12 ,  H04W88/08

Abstract: Methods, systems, and devices for wireless communications are described. An access point (AP) may transmit, to a second AP and during a first portion of a transmission opportunity (TxOP), a request to participate in a multi-user (MU) transmission. The AP may receive, from the second AP and during the first portion of the TxOP, an indication of intent to participate in the MU transmission during the second portion of the TxOP, the indication of intent including a resource request of the second AP for participation in the MU transmission. The AP may transmit, during an initial period of the second portion of the TxOP, a trigger signal to the second AP indicating a set of one or more resources for the second AP during the MU transmission. The AP may participate, in conjunction with the second AP and during the second portion of the TxOP, in the MU transmission.

公开(公告)号：US11696177B2

公开(公告)日：2023-07-04

申请号：US17233242

申请日：2021-04-16

Applicant: QUALCOMM Incorporated

Inventor： Stephen Jay Shellhammer ,  Bin Tian

IPC: H04W28/06 ,  H04W28/02 ,  H04W72/0453 ,  H04W80/02

CPC classification number: H04W28/06 ,  H04W28/0268 ,  H04W72/0453 ,  H04W80/02

Abstract: This disclosure provides methods, devices and systems for soliciting trigger-based (TB) physical layer protocol convergence protocol (PLCP) protocol data units (PPDUs). Some implementations more specifically relate to trigger frame and PPDU designs that support RU downsizing. For example, an access point (AP) may transmit a trigger frame soliciting a TB PPDU from a wireless station (STA). In some aspects, the trigger frame may carry RU allocation information indicating the allocated RU or MRU (associated with a wireless medium) and downsizing information indicating whether downsizing of the RU or MRU is permitted. If interference is detected in a portion of the wireless medium, and downsizing is permitted, the STA may transmit the TB PPDU on a downsized RU or MRU. The downsized RU or MRU includes a subset of the tones in the RU or MRU allocated by the trigger frame.

公开(公告)号：US11646854B2

公开(公告)日：2023-05-09

申请号：US17245471

申请日：2021-04-30

Applicant: QUALCOMM Incorporated

Inventor： Lin Yang ,  Bin Tian

IPC: H04W56/00 ,  H04L5/00 ,  H04W72/0446 ,  H04W80/02

CPC classification number: H04L5/0094 ,  H04L5/0039 ,  H04W72/0446 ,  H04W80/02

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 trigger frame and physical layer convergence protocol (PLCP) protocol data unit (PPDU) designs that support distributed transmission. In some implementations, an access point (AP) may transmit a trigger frame soliciting a trigger-based (TB) PPDU from a wireless station (STA), where the trigger frame carries RU allocation information indicating a number (N) of tones allocated for the STA and carries tone distribution information indicating whether the N tones are allocated for a contiguous transmission or a distributed transmission. In some other implementations, an AP or a STA may transmit a PPDU carrying distributed signaling information indicating whether the PPDU is transmitted as a contiguous transmission or a distributed transmission.

公开(公告)号：US11533694B2

公开(公告)日：2022-12-20

申请号：US16659253

申请日：2019-10-21

Applicant: QUALCOMM Incorporated

Inventor： Sameer Vermani ,  Bin Tian ,  Lin Yang ,  Jialing Li Chen

IPC: H04W56/00 ,  H04W92/20

Abstract: This disclosure provides systems, methods, apparatus, and computer programs encoded on computer storage media, for relative timing drift correction for distributed multi-user transmissions. In one aspect, a first access point (AP) may receive a first signal from a second AP. The first signal may be associated with a channel sounding procedure to be performed substantially simultaneously by the second AP and the first AP. The first AP may then receive a second signal from the second AP, and prior to a substantially simultaneous transmission by the second AP and the first AP. The second signal may include timing information relative to the first signal. The first AP may determine a start time of the substantially simultaneous transmission at the first AP based on the timing information, and may initiate the substantially simultaneous transmission according to the determined start time.