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    ENHANCED SOUNDING PACKET DESIGNS
    1.
    发明申请
    ENHANCED SOUNDING PACKET DESIGNS 有权

    公开(公告)号：US20250150237A1

    公开(公告)日：2025-05-08

    申请号：US18953048

    申请日：2024-11-19

    Applicant: QUALCOMM Incorporated

    Inventor： Sameer VERMANI ,  Alfred ASTERJADHI ,  Yanjun SUN ,  Bin TIAN ,  Lin YANG ,  Jialing Li CHEN ,  George CHERIAN ,  Youhan KIM

    IPC: H04L5/00

    Abstract: This disclosure provides methods, devices and systems for generating enhanced sounding packets. Some implementations more specifically relate to sounding packet designs that support enhancements to wireless communication protocols associated with the Institute of Electrical and Electronics Engineers (IEEE) 802.11be amendment, and future generations, of the IEEE 802.11 standard. In some implementations, an enhanced null data packet announcement (NDPA) frame may be configurable to support multiple versions of the IEEE 802.11 standard. For example, the enhanced NDPA frame may be configured in accordance with a legacy or a non-legacy NDPA frame format. In some other implementations, the enhanced NDPA frame may include a subfield carrying information identifying a particular basic service set (BSS) which may be associated with one or more STA information fields. Still further, in some implementations, an Extremely High Throughput (EHT) PPDU may include signaling to indicate whether the EHT PPDU is formatted as a sounding NDP.

    CORRELATION-BASED CHANNEL FEEDBACK
    3.
    发明申请
    CORRELATION-BASED CHANNEL FEEDBACK 审中-公开

    公开(公告)号：US20200336341A1

    公开(公告)日：2020-10-22

    申请号：US16786890

    申请日：2020-02-10

    Applicant: QUALCOMM Incorporated

    Inventor： Bin TIAN ,  Lin YANG ,  Sameer VERMANI

    IPC: H04L25/02 ,  H04L27/26 ,  H04B7/0417 ,  H04B7/06 ,  H04B7/0452

    Abstract: This disclosure provides methods, devices and systems for providing channel feedback for multiple spatial streams. In some implementations, the techniques involve generating distinct channel estimates for different respective sets of orthogonal spatial streams. In some implementations, the orthogonality of the different sets of orthogonal spatial streams enables the beamformee to distinguish the spatial streams to provide the separate channel estimates. The beamformee may then determine separate correlations for the different respective sets of spatial streams. In some implementations, the beamformee combines the correlations to determine an average correlation for each of a number of sets of frequency tones. The beamformee may then perform an eigenvalue decomposition on a tone-by-tone basis based on the respective average correlation and the channel estimate obtained for the tone. Because the eigenvalue decomposition may be performed on each of the two sets of spatial streams separately, the complexity involved with performing each eigenvalue decomposition is greatly reduced.

    PHYSICAL LAYER DESIGN FOR UPLINK (UL) MULTIUSER MULTIPLE-INPUT, MULTIPLE-OUTPUT (MU-MIMO) IN WIRELESS LOCAL AREA NETWORK (WLAN) SYSTEMS
    4.
    发明申请
    PHYSICAL LAYER DESIGN FOR UPLINK (UL) MULTIUSER MULTIPLE-INPUT, MULTIPLE-OUTPUT (MU-MIMO) IN WIRELESS LOCAL AREA NETWORK (WLAN) SYSTEMS 有权
    无线局域网（WLAN）系统中的上行链路（UL）多媒体多输入多输出（MU-MIMO）的物理层设计

    公开(公告)号：US20150023335A1

    公开(公告)日：2015-01-22

    申请号：US14332301

    申请日：2014-07-15

    Applicant: QUALCOMM Incorporated

    Inventor： Sameer VERMANI ,  Rahul TANDRA ,  Didier Johannes Richard VAN NEE ,  Albert VAN ZELST ,  Hemanth SAMPATH ,  Bin TIAN

    IPC: H04W56/00 ,  H04B7/04

    CPC classification number: H04W56/0035 ,  H04B7/0404 ,  H04B7/0452 ,  H04B7/0684 ,  H04L5/0048 ,  H04L27/26 ,  H04L27/261 ,  H04L27/2613 ,  H04L27/2657 ,  H04W84/12

    Abstract: Certain aspects of the present disclosure provide methods and apparatus for uplink (UL) multiuser multiple-input, multiple-output (MU-MIMO) transmissions in a High Efficiency WLAN (HEW) system. One example method generally includes generating a packet having a preamble portion and transmitting the packet. The preamble portion typically includes a long training field (LTF); a first signal (SIG) field subsequent to the LTF; one or more other LTFs located subsequent to the first SIG field; and at least one second SIG field, wherein all SIG fields in the preamble portion, other than the first SIG field, are subsequent to the one or more other LTFs. Another example method generally includes receiving, from an apparatus, a packet having a preamble portion comprising tone-interleaved LTFs; and performing frequency offset adjustment on the packet based on the tone-interleaved LTFs.

    Abstract translation: 本公开的某些方面提供了在高效率WLAN（HEW）系统中用于上行链路（UL）多用户多输入多输出（MU-MIMO）传输的方法和装置。 一个示例性方法通常包括生成具有前导码部分并发送分组的分组。 前导码部分通常包括长训练场（LTF）; 在LTF之后的第一信号（SIG）字段; 位于第一SIG场之后的一个或多个其它LTF; 以及至少一个第二SIG字段，其中除了第一SIG字段之外的前导码部分中的所有SIG字段都在一个或多个其他LTF之后。 另一示例性方法通常包括从装置接收具有包括色调交织的LTF的前导码部分的分组; 并基于色调交织的LTF对分组进行频偏调整。

    PHYSICAL LAYER PREAMBLE DESIGN
    6.
    发明申请
    PHYSICAL LAYER PREAMBLE DESIGN 有权

    公开(公告)号：US20250055792A1

    公开(公告)日：2025-02-13

    申请号：US18812052

    申请日：2024-08-22

    Applicant: QUALCOMM Incorporated

    Inventor： Jialing Li CHEN ,  Sameer VERMANI ,  Bin TIAN

    IPC: H04L45/74

    Abstract: This disclosure provides methods, devices and systems for generating packet preambles. Some implementations more specifically relate to preamble designs that support gains in data throughput achievable in accordance with the IEEE 802.11be amendment, and future generations, of the IEEE 802.11 standard. Among other examples, the preamble designs of the present implementations may allow for more reliable packet detection, more accurate channel estimation, and more robust decoding of signal field (SIG) symbols. Additionally, or alternatively, the preamble designs of the present disclosure may be implemented with different lengths, modulation schemes, or transmit power compared to preamble designs that conform to existing versions of the IEEE 802.11 standard.

    DISTRIBUTED MULTI-USER (MU) WIRELESS COMMUNICATION
    8.
    发明申请
    DISTRIBUTED MULTI-USER (MU) WIRELESS COMMUNICATION 有权

    公开(公告)号：US20210226671A1

    公开(公告)日：2021-07-22

    申请号：US17127890

    申请日：2020-12-18

    Applicant: QUALCOMM Incorporated

    Inventor： Sameer VERMANI ,  Bin TIAN

    IPC: H04B7/024 ,  H04L5/00 ,  H04B7/0452 ,  H04W72/04 ,  H04B7/0417 ,  H04W84/12

    Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for group formation and sounding for distributed multi-user multiple input multiple output (MU-MIMO). Some implementations include a method of wireless communication. The method includes transmitting, from a first access point of a plurality of access points, an announcement frame for performing a beamforming procedure for a distributed transmission. The distributed transmission includes a transmission from the plurality of access points. The announcement frame includes at least one identifier of a user terminal in a different basic service set than a basic service set of the first access point. The method further includes transmitting a packet for measuring a channel. The method further includes receiving feedback information from the user terminal based on the packet for measuring the channel. The method further includes transmitting the distributed transmission using the beamforming procedure.

    TRIGGER FRAME IN WIRELESS LOCAL AREA NETWORK
    9.
    发明申请
    TRIGGER FRAME IN WIRELESS LOCAL AREA NETWORK 审中-公开

    公开(公告)号：US20190166590A1

    公开(公告)日：2019-05-30

    申请号：US16244036

    申请日：2019-01-09

    Applicant: QUALCOMM Incorporated

    Inventor： Lochan VERMA ,  Sameer VERMANI ,  Bin TIAN ,  Lin YANG ,  Raja BANERJEA ,  Alfred ASTERJADHI

    IPC: H04W72/04 ,  H04W74/04 ,  H04L5/00 ,  H04L27/26 ,  H04W52/24 ,  H04W52/14 ,  H04W16/14

    Abstract: The present disclosure provides various aspects related to techniques for generating trigger frames, at an access point (AP), that reduce the overhead associated with triggering an uplink transmission from the wireless station (STA). Features of the present disclosure achieve this by, for example, utilizing a single per-user information field of the trigger to signal a plurality of random access resource units that may be allocated to the one or more STAs in the network. Such a technique is an improvement over the conventional system that require each random access resource unit to be signaled separately in a separate per-user information field (thus increasing the overhead). Additionally, aspects of the present disclosure allow the AP to effectively signal to the STA whether the one or more resources allocated to the at least one STA are a single user resource unit allocation or a multi-user resource unit allocation.

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