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    LOW LATENCY CHANNEL ACCESS
    1.
    发明申请
    LOW LATENCY CHANNEL ACCESS 有权

    公开(公告)号：US20250063596A1

    公开(公告)日：2025-02-20

    申请号：US18450342

    申请日：2023-08-15

    Applicant: QUALCOMM Incorporated

    Inventor： Abdel Karim AJAMI ,  George CHERIAN ,  Alfred ASTERJADHI ,  Sai Yiu Duncan HO ,  Abhishek Pramod PATIL ,  Youhan KIM ,  Yanjun SUN ,  Gaurang NAIK ,  Guido Robert FREDERIKS

    IPC: H04W74/08 ,  H04L5/00 ,  H04W72/0453

    Abstract: This disclosure provides methods, components, devices and systems for low latency channel access. Some aspects more specifically relate to preemption of existing transmission opportunities (TXOPs) such that devices with low latency traffic to transmit may access the communication medium to transmit low latency traffic. Short physical layer protocol data units (PPDUs) may be used within TXOPs with interframe spaces between the PPDUs such that a device with low latency traffic may transmit a preemption indication during the interframe space. A first wireless communication device may identify low latency traffic during a first PPDU of a TXOP assigned to a second wireless communication device. The first wireless communication device may transmit a preemption indication in an interframe space that indicates that a subsequent scheduled PPDU in the TXOP will be preempted in order for the first wireless communication device to transmit a PPDU to convey the low latency traffic.

    60 GHZ OPERATING MODE FOR WIRELESS LOCAL AREA NETWORKS (WLANS)
    2.
    发明申请
    60 GHZ OPERATING MODE FOR WIRELESS LOCAL AREA NETWORKS (WLANS) 有权

    公开(公告)号：US20240413866A1

    公开(公告)日：2024-12-12

    申请号：US18811529

    申请日：2024-08-21

    Applicant: QUALCOMM Incorporated

    Inventor： Lin YANG ,  Bin TIAN ,  Alfred ASTERJADHI ,  Youhan KIM

    IPC: H04B7/06 ,  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 BSS discovery and association techniques that support wireless communications on carrier frequencies above 7 GHz. In some aspects, an access point (AP) may communicate using beamforming on a wireless communication link operating at a carrier frequency above 7 GHZ (the “directional link”) while offloading the BSS discovery and association procedures needed to support such communications onto a wireless communication link operating at a carrier frequency below 7 GHZ (the “anchor link”). In some implementations, the AP may perform a beamforming training operation with a STA over the directional link upon associating with the STA over the anchor link. In such implementations, the AP may communicate with the STA over the directional link using a beam derived from the beamforming training operation.

    LONG TRAINING FIELD (LTF) IN DISTRIBUTED TRANSMISSION
    3.
    发明公开
    LONG TRAINING FIELD (LTF) IN DISTRIBUTED TRANSMISSION 审中-公开

    公开(公告)号：US20240007241A1

    公开(公告)日：2024-01-04

    申请号：US18323333

    申请日：2023-05-24

    Applicant: QUALCOMM Incorporated

    Inventor： Lin YANG ,  Bin TIAN ,  Qifan CHEN ,  Youhan KIM

    IPC: 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.

    60 GHZ PHYSICAL LAYER CONVERGENCE PROTOCOL (PLCP) PROTOCOL DATA UNIT (PPDU) FORMATS
    4.
    发明公开
    60 GHZ PHYSICAL LAYER CONVERGENCE PROTOCOL (PLCP) PROTOCOL DATA UNIT (PPDU) FORMATS 审中-公开

    公开(公告)号：US20230388986A1

    公开(公告)日：2023-11-30

    申请号：US17828085

    申请日：2022-05-31

    Applicant: QUALCOMM Incorporated

    Inventor： Lin YANG ,  Jialing Li CHEN ,  Bin TIAN ,  Youhan KIM

    IPC: H04W72/04 ,  H04L5/00 ,  H04L27/26

    CPC classification number: H04W72/0453 ,  H04L5/0044 ,  H04L5/0078 ,  H04L27/2602

    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 that support wireless communications on carrier frequencies above 7 GHz. In some aspects, a wireless communication device may map a physical layer convergence protocol (PLCP) protocol data unit (PPDU) to orthogonal subcarriers according to existing tone plans associated with carrier frequencies below 7 GHz and may up-clock the PPDU for transmission on carrier frequencies above 7 GHz (such as by increasing the frequency of a clock signal used to convert the PPDU between the frequency domain and the time domain). In some implementations, the PPDU may conform to an existing PPDU format designed for sub-7 GHz wireless communications. In some other implementations, the PPDU may conform to a “green field” PPDU format optimized for wireless communications on carrier frequencies above 7 GHz.

    DISTRIBUTED TRANSMISSION OF SHORT TRAINING FIELDS
    5.
    发明申请
    DISTRIBUTED TRANSMISSION OF SHORT TRAINING FIELDS 有权

    公开(公告)号：US20230069075A1

    公开(公告)日：2023-03-02

    申请号：US17402475

    申请日：2021-08-13

    Applicant: QUALCOMM Incorporated

    Inventor： Lin YANG ,  Bin TIAN ,  Youhan KIM ,  Qifan CHEN

    IPC: H04L5/00 ,  H04W52/18

    Abstract: This disclosure provides methods, devices and systems for distributed transmission of short training fields in a power spectral density limited frequency band. In one aspect, a device receives a distributed resource unit (dRU) assignment for transmission of a dRU portion of a physical layer protocol data unit (PPDU); determines a spatial stream global cyclic shift delay (CSD) index for an short training field (STF) of the dRU portion of the PPDU; and transmits, based on the spatial stream global CSD index, the EHT of the dRU portion of the PPDU across a dRU spreading bandwidth associated with the dRU assignment using a tone plan and sequence corresponding to a regular resource unit (rRU) transmission mode.

    CLEAR CHANNEL ASSESSMENT
    6.
    发明申请
    CLEAR CHANNEL ASSESSMENT 有权

    公开(公告)号：US20220030625A1

    公开(公告)日：2022-01-27

    申请号：US17382242

    申请日：2021-07-21

    Applicant: QUALCOMM Incorporated

    Inventor： Lin YANG ,  Bin TIAN ,  Youhan KIM

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

    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.

    SCRAMBLING SEQUENCES FOR REQUEST-TO-SEND (RTS) AND CLEAR-TO-SEND (CTS) FRAMES
    7.
    发明申请
    SCRAMBLING SEQUENCES FOR REQUEST-TO-SEND (RTS) AND CLEAR-TO-SEND (CTS) FRAMES 有权

    公开(公告)号：US20210410188A1

    公开(公告)日：2021-12-30

    申请号：US17335243

    申请日：2021-06-01

    Applicant: QUALCOMM Incorporated

    Inventor： Lin YANG ,  Youhan KIM ,  Bin TIAN

    IPC: H04W74/08 ,  H04W74/00 ,  H04L27/26

    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 scrambler seed value that includes at least 11 bits, where at least one of the 7 least significant bits (LSBs) of the scrambler seed value has a non-zero value. The transmitting device may generate a scrambling sequence based on the scrambler seed value and a polynomial, may construct a physical layer convergence protocol (PLCP) protocol data unit (PPDU) that includes a multi-user (MU) request-to-send (RTS) frame and the scrambler seed value, may scramble one or more portions of the PPDU based on the scrambling sequence; and may transmit the PPDU over a wireless medium.

    ENCODING IN UPLINK MULTI-USER MIMO AND OFDMA TRANSMISSIONS
    10.
    发明申请
    ENCODING IN UPLINK MULTI-USER MIMO AND OFDMA TRANSMISSIONS 有权
    编码上行多用户MIMO和OFDMA传输

    公开(公告)号：US20160099796A1

    公开(公告)日：2016-04-07

    申请号：US14871892

    申请日：2015-09-30

    Applicant: QUALCOMM Incorporated

    Inventor： Lin YANG ,  Bin TIAN ,  Gang DING ,  Youhan KIM ,  Sameer VERMANI

    IPC: H04L1/00 ,  H04L27/12 ,  H04B7/04 ,  H03M13/23 ,  H03M13/11

    CPC classification number: H04L1/0041 ,  H03M13/1177 ,  H03M13/235 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/0669 ,  H04L1/0045 ,  H04L1/0057 ,  H04L1/0059 ,  H04L1/0075 ,  H04L1/0625 ,  H04L27/12

    Abstract: A method, an apparatus, and a computer-readable medium for wireless communication are provided. In one aspect, the apparatus is configured to determine a number of data symbols for transmitting a data payload. The apparatus is configured to determine a number of payload bits for transmitting the data payload based on the determined number of data symbols. The apparatus is configured to transmit a data frame. The data frame includes a signal field and data symbols encoded based on the data payload, the determined number of data symbols, and the determined number of payload bits, in which the data symbols are encoded using LDPC encoding or BCC encoding.

    Abstract translation: 提供了一种用于无线通信的方法，装置和计算机可读介质。 在一个方面，该装置被配置为确定用于发送数据有效载荷的多个数据符号。 该装置被配置为基于所确定的数据符号数量来确定用于发送数据有效载荷的有效载荷比特数。 该装置被配置为发送数据帧。 数据帧包括信号字段和基于数据有效载荷，所确定的数据符号数量以及确定的有效载荷比特数进行编码的数据符号，其中使用LDPC编码或BCC编码对数据符号进行编码。

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