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公开(公告)号：US11888770B2
公开(公告)日：2024-01-30
申请号：US17196557
申请日：2021-03-09
Applicant: QUALCOMM Incorporated
IPC: H04L5/00 , H04W72/0453
CPC classification number: H04L5/0044 , H04W72/0453 , H04L5/0007
Abstract: This disclosure provides systems, methods, and apparatuses for wireless communication. An example apparatus selects a first resource unit (RU) of a plurality of RUs for transmitting a physical (PHY) layer convergence protocol (PLCP) protocol data unit (PPDU) over a wireless medium. The first RU may include a set of contiguous tones occupying a first frequency bandwidth. The plurality of RUs may collectively span a second frequency bandwidth greater than the first frequency bandwidth. The apparatus maps the set of contiguous tones of the first RU to a set of non-contiguous tones distributed across the second frequency bandwidth using a tone mapping vector and a tone mapping offset associated with the first RU. The apparatus transmits the PPDU over the set of non-contiguous tones distributed across the second frequency bandwidth.
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12.发明公开公开(公告)号：US20230412325A1
公开(公告)日：2023-12-21
申请号：US17843747
申请日：2022-06-17
Applicant: QUALCOMM Incorporated
Inventor： Lin Yang , Bin Tian , Youhan Kim , Jialing Li Chen
IPC: H04L5/00
CPC classification number: H04L5/0007 , H04L5/0048 , H04L5/0098 , H04L5/0066
Abstract: This disclosure provides methods, devices and systems for reducing PAPR in wireless communications. Some implementations more specifically relate to single-carrier frequency-division multiplexing (SC-FDM) techniques that can be used for wireless communications in wireless local area networks (WLANs). In some aspects, a wireless communication device may modulate a physical layer convergence protocol (PLCP) protocol data unit (PPDU) as a series of symbols in the time domain and may transform a subset of the time-domain symbols into a number (Q) of frequency-domain samples based on a Q-point discrete Fourier transform (DFT). The wireless communication device maps the Q frequency-domain samples to a number (N) of orthogonal subcarriers (representing an orthogonal frequency-division multiplexing (OFDM) symbol), where N>Q, and transforms the N subcarriers into N time-domain samples, based on an inverse fast Fourier transform (IFFT), for transmission over a wireless channel.
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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.
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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
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.
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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
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.
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Patent Agency Ranking
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.
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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
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.
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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
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.
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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
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.
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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.
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