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    SYSTEMS AND METHODS FOR LOW DENSITY PARITY CHECK TONE MAPPING
    42.
    发明申请
    SYSTEMS AND METHODS FOR LOW DENSITY PARITY CHECK TONE MAPPING 审中-公开
    低密度奇偶校验色调映射的系统和方法

    公开(公告)号：US20130179755A1

    公开(公告)日：2013-07-11

    申请号：US13735747

    申请日：2013-01-07

    Applicant: QUALCOMM Incorporated

    Inventor： Lin Yang ,  Didier Johannes Richard Van Nee ,  Hemanth Sampath ,  Sameer Vermani

    IPC: H03M13/13

    CPC classification number: H03M13/13 ,  H04B7/0697 ,  H04L1/0033 ,  H04L1/0057 ,  H04L1/0071 ,  H04L27/2626 ,  H04L27/2627 ,  H04L27/2647

    Abstract: This disclosure provides systems, methods, and apparatus, including non-transitory computer-readable medium for tone mapping an error correction code for 1 MHz OFDM transmission. In one aspect, a wireless communications apparatus is provided. The wireless communications apparatus includes a tone mapper configured to tone map at least error correction codeword to data tones of an orthogonal frequency-division multiplexing (OFDM) symbol based on an error correction code tone mapping distance selected from the group consisting of 2, 3, and 4. The OFDM symbol has twenty four data tones, at least one pilot tone, a DC tone, and at least one guard tone. The wireless communications apparatus further includes a transmit module configured to transmit the at least one tone mapped error correction codeword using about a 1 MHz OFDM transmission mode.

    Abstract translation: 本公开提供了系统，方法和装置，包括用于1MHz OFDM传输的用于色调映射纠错码的非暂时计算机可读介质。 一方面，提供一种无线通信装置。 无线通信装置包括：色调映射器，被配置为基于从由2,3，...组成的组中选择的纠错码色调映射距离，至少将纠错码字调制到正交频分复用（OFDM）符号的数据音调， OFDM符号具有二十四个数据音调，至少一个导频音，直流音和至少一个保护音。 无线通信装置还包括被配置为使用大约1MHz的OFDM传输模式来发送所述至少一个色调映射的纠错码字的发送模块。

    60 GHz numerology for wireless local area networks (WLANs)
    44.
    发明授权
    60 GHz numerology for wireless local area networks (WLANs) 有权

    公开(公告)号：US12192036B2

    公开(公告)日：2025-01-07

    申请号：US18480666

    申请日：2023-10-04

    Applicant: QUALCOMM Incorporated

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

    IPC: H04L27/26 ,  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.

    Distributed resource unit signaling
    45.
    发明授权
    Distributed resource unit signaling 有权

    公开(公告)号：US12177166B2

    公开(公告)日：2024-12-24

    申请号：US18302678

    申请日：2023-04-18

    Applicant: QUALCOMM Incorporated

    Inventor： Lin Yang ,  Bin Tian

    IPC: H04W56/00 ,  H04L5/00 ,  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.

    Physical layer preamble design for special packet types
    46.
    发明授权
    Physical layer preamble design for special packet types 有权

    公开(公告)号：US12096267B2

    公开(公告)日：2024-09-17

    申请号：US18304310

    申请日：2023-04-20

    Applicant: QUALCOMM Incorporated

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

    IPC: H04W28/06 ,  H04W28/02

    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.

    TECHNIQUES FOR GENERATING AND USING LONGER LOW-DENSITY PARITY CHECK CODEWORDS
    48.
    发明公开
    TECHNIQUES FOR GENERATING AND USING LONGER LOW-DENSITY PARITY CHECK CODEWORDS 审中-公开

    公开(公告)号：US20240223308A1

    公开(公告)日：2024-07-04

    申请号：US18145844

    申请日：2022-12-22

    Applicant: QUALCOMM Incorporated

    Inventor： Kanke Wu ,  Bin Tian ,  Lin Yang

    IPC: H04L1/00 ,  H03M13/11

    CPC classification number: H04L1/0063 ,  H03M13/1102 ,  H04L1/0057

    Abstract: Methods, systems, and devices for wireless communications are described. A first wireless device, such as a wireless station (STA) or a wireless access point (AP), may perform a low-density parity check (LDPC) coding operation on input bits of a set of code blocks. Performing the LDPC coding operation on the input bits may produce a set of codewords including one or more codewords having a first codeword length and one or more codewords having a second, shorter codeword length. The first wireless device may arrange the set of codewords into a set of symbols such that a last symbol in time of the set of symbols includes the one or more codewords each having the second codeword length and no codewords having the first codeword length. The first wireless device may transmit, to a second wireless device, the plurality of symbols.

    RELATIVE TIMING DRIFT CORRECTION FOR DISTRIBUTED MULTI-USER TRANSMISSIONS
    50.
    发明公开
    RELATIVE TIMING DRIFT CORRECTION FOR DISTRIBUTED MULTI-USER TRANSMISSIONS 审中-公开

    公开(公告)号：US20230180160A1

    公开(公告)日：2023-06-08

    申请号：US18062839

    申请日：2022-12-07

    Applicant: QUALCOMM Incorporated

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

    IPC: H04W56/00

    CPC classification number: H04W56/0015 ,  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.

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