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    Physical layer preamble design for special packet types
    1.
    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

    申请人： QUALCOMM Incorporated

    发明人： Jialing Li Chen ,  Sameer Vermani ,  Bin Tian ,  Lin Yang

    IPC分类号： H04W28/06 ,  H04W28/02

    CPC分类号： H04W28/0231 ,  H04W28/06

    摘要： 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
    3.
    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

    申请人： QUALCOMM Incorporated

    发明人： Kanke Wu ,  Bin Tian ,  Lin Yang

    IPC分类号： H04L1/00 ,  H03M13/11

    CPC分类号： H04L1/0063 ,  H03M13/1102 ,  H04L1/0057

    摘要： 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
    5.
    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

    申请人： QUALCOMM Incorporated

    发明人： Sameer Vermani ,  Bin Tian ,  Lin Yang ,  Jialing Li Chen

    IPC分类号： H04W56/00

    CPC分类号： H04W56/0015 ,  H04W92/20

    摘要： 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.

    ORTHOGONAL MULTIPLEXING OF HIGH EFFICIENCY (HE) AND EXTREMELY HIGH THROUGHPUT (EHT) WIRELESS TRAFFIC
    7.
    发明申请
    ORTHOGONAL MULTIPLEXING OF HIGH EFFICIENCY (HE) AND EXTREMELY HIGH THROUGHPUT (EHT) WIRELESS TRAFFIC 有权

    公开(公告)号：US20230007604A1

    公开(公告)日：2023-01-05

    申请号：US17943677

    申请日：2022-09-13

    申请人： Qualcomm Incorporated

    发明人： Lochan Verma ,  Bin Tian ,  Sameer Vermani ,  Lin Yang

    IPC分类号： H04W56/00 ,  H04L69/28 ,  H04L5/00 ,  H04L27/26 ,  H04J3/06 ,  H04W88/08

    摘要： This disclosure provides systems, methods, apparatus, including computer programs encoded on computer storage media for orthogonal multiplexing of high efficiency (HE) and extremely high throughput (EHT) wireless traffic. Devices in a wireless local area network (WLAN) may operate under HE or EHT conditions. An access point (AP) may support both HE and EHT communications with WLAN devices. To enable substantially simultaneous downlink HE and EHT transmissions and substantially simultaneous uplink HE and EHT transmissions, the AP may support orthogonal frequency-division multiple access (OFDMA) of HE and EHT transmissions. For example, pre-HE and pre-EHT modulated fields, HE and EHT modulated fields, and payloads may be aligned in time for the HE and EHT transmissions. The AP may ensure orthogonality for multiplexing the HE and EHT transmissions based on the alignment. In some implementations, a trigger frame may be utilized to indicate uplink transmission alignments.

    Dual band channel bonding and puncturing
    8.
    发明授权
    Dual band channel bonding and puncturing 有权

    公开(公告)号：US11452098B2

    公开(公告)日：2022-09-20

    申请号：US16387261

    申请日：2019-04-17

    申请人： QUALCOMM Incorporated

    发明人： Lochan Verma ,  Bin Tian ,  Sameer Vermani ,  Lin Yang ,  Youhan Kim

    IPC分类号： H04W4/00 ,  H04W72/04

    摘要： An access point (AP) may signal management frames that include two operation information fields indicating two channel widths for different classes of wireless stations (STAs). STAs may identify one of the two operation information fields based on capabilities of the STA (e.g., whether or not the STA is capable of dual band channel bonding, resource unit or physical channel puncturing, etc.). In some cases, one operation information field may indicate a channel width within a first and second frequency band (e.g., within the 5 GHz band and the 6 GHz band), as well as a puncturing scheme associated with the channel width. In some cases, the operation information field may indicate a dual band channel bonding configuration, where two frequency segments associated with the channel bonding configuration are in two different frequency bands. In some cases, a tightened spectral mask may be used for such dual band channel bonding configurations.

    PHYSICAL LAYER (PHY) PACKET DESIGN FOR POWER SPECTRAL DENSITY (PSD) LIMITS
    9.
    发明申请
    PHYSICAL LAYER (PHY) PACKET DESIGN FOR POWER SPECTRAL DENSITY (PSD) LIMITS 有权

    公开(公告)号：US20210289500A1

    公开(公告)日：2021-09-16

    申请号：US17196247

    申请日：2021-03-09

    申请人： QUALCOMM Incorporated

    发明人： Lin Yang ,  Jialing Li Chen ,  Sameer Vermani ,  Bin Tian ,  Youhan Kim ,  Vincent Knowles Jones, IV ,  Tevfik Yucek

    IPC分类号： H04W72/04 ,  H04W52/36

    摘要： This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for physical layer (PHY) packet design for power spectral density (PSD) limits. In some implementations, a wireless communication device generates a plurality of PHY convergence protocol (PLCP) protocol data unit (PPDU) duplicates configured for transmission over a selected bandwidth, and transmits each PPDU duplicate of the plurality of PPDU duplicates on a corresponding frequency subband of a plurality of different frequency subbands. In some other implementations, the wireless communication device generates a PPDU for transmission over a set of duplicated resource units (RUs) allocated to the wireless communication device, and transmits the PPDU over the allocated set of duplicated RUs.

    Resource unit spreading
    10.
    发明授权
    Resource unit spreading 有权

    公开(公告)号：US11044057B2

    公开(公告)日：2021-06-22

    申请号：US16502428

    申请日：2019-07-03

    申请人： QUALCOMM incorporated

    发明人： Alfred Asterjadhi ,  Abhishek Pramod Patil ,  George Cherian ,  Lin Yang ,  Bin Tian ,  Sameer Vermani ,  Lochan Verma

    IPC分类号： H04L5/00 ,  H04W72/04

    摘要： This disclosure provides methods, devices, and systems for wireless communications. In some systems, an access point (AP) may assign a resource unit (RU) including a non-contiguous set of tones of a channel to a wireless node, such as a station (STA). The non-contiguous set of tones includes at least some tones that are non-contiguous in the frequency domain with all other tones of the set. The AP may generate an indicator for this RU and may transmit the indicator to the wireless node. The wireless node may receive the indicator, determine the non-contiguous set of tones for the indicated RU, and transmit data over the non-contiguous set of tones for the RU. The AP may receive the data via the RU (over the non-contiguous set of tones).