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    Directional listen before talk scheme
    2.
    发明授权
    Directional listen before talk scheme 有权

    公开(公告)号：US10327261B2

    公开(公告)日：2019-06-18

    申请号：US15656842

    申请日：2017-07-21

    Applicant: QUALCOMM Incorporated

    Inventor： Mohammad Naghshvar ,  Jing Sun ,  Tamer Kadous

    IPC: H04B7/00 ,  H04W74/08

    Abstract: Methods, systems, and devices for wireless communication are described. A transmitting wireless device may select a direction for a wireless transmission over a channel The transmitting wireless device may monitor an availability of the channel in the selected direction for a duration of a first channel listening time corresponding to the selected direction. The transmitting wireless device may determine that the channel is available in the selected direction based on either an absence of channel reservation messages during the monitoring, or a first channel reservation message received during the monitoring. The first channel reservation message may indicate a permissibility of a simultaneous transmission in the selected direction. The transmitting wireless device may transmit a second channel reservation message to a receiving wireless device over the channel in the selected direction based on the determination that the channel is available in the selected direction.

    Soft channel reservation
    3.
    发明授权
    Soft channel reservation 有权

    公开(公告)号：US10405335B2

    公开(公告)日：2019-09-03

    申请号：US15906040

    申请日：2018-02-27

    Applicant: QUALCOMM Incorporated

    Inventor： Sanaz Barghi ,  Jing Sun ,  Mohammad Naghshvar ,  Tamer Kadous

    IPC: H04W72/12 ,  H04W16/14 ,  H04B7/0408 ,  H04J11/00 ,  H04L27/00 ,  H04W74/08 ,  H04L1/00 ,  H04L1/20 ,  H04W16/28 ,  H04L27/26 ,  H04L5/00

    Abstract: Soft channel reservation in shared spectrum networks is discussed. In network areas where multiple wireless nodes, whether from the same or different network operators, share spectrum using a channel reservation signaling form of contention resolution, an aggressor transmitter listens for a neighbor receiver's receiver channel reservation signal to the neighbor transmitter the neighbor receiver is in communication with. The receiver channel reservation signal includes channel condition information that the aggressor transmitter can use to estimate an interference impact at the neighbor receiver should the aggressor transmitter performs its transmissions to its own receivers. Based on whether this estimated interference impact exceeds or remains within a particular threshold, the aggressor transmitter may decide whether or not to back off of its transmissions until a later time.

    TECHNIQUES FOR PERFORMING CARRIER SENSE ADAPTIVE TRANSMISSION IN UNLICENSED SPECTRUM
    5.
    发明申请
    TECHNIQUES FOR PERFORMING CARRIER SENSE ADAPTIVE TRANSMISSION IN UNLICENSED SPECTRUM 审中-公开
    在不同频谱中执行载波侦听自适应传输的技术

    公开(公告)号：US20150085683A1

    公开(公告)日：2015-03-26

    申请号：US14486114

    申请日：2014-09-15

    Applicant: QUALCOMM Incorporated

    Inventor： Ahmed Kamel Sadek ,  Mohammad Naghshvar ,  Nachiappan Valliappan

    IPC: H04W16/14 ,  H04L12/26

    CPC classification number: H04W16/14 ,  H04L43/0894 ,  H04W72/1215

    Abstract: Aspects for reducing interference between networks are provided. A signal transmitted by a first network over a communications medium using an unlicensed frequency spectrum is decoded to determine one or more parameters of a packet in the signal. A level of utilization of the communications medium by the first network can be estimated based at least in part on a signal strength of the signal and the one or more parameters. A time for communicating in a second network over the communications medium using the unlicensed frequency spectrum can be adjusted based at least in part on the level of utilization of the communications medium by the first network.

    Abstract translation: 提供了减少网络间干扰的方面。 由第一网络通过使用未许可频谱的通信介质发送的信号被解码以确定信号中的分组的一个或多个参数。 可以至少部分地基于信号的信号强度和一个或多个参数来估计第一网络对通信介质的利用水平。 可以至少部分地基于第一网络对通信介质的利用水平来调整用于使用未许可频谱在通信介质上在第二网络中进行通信的时间。

    Preamble design on a shared communication medium
    7.
    发明授权
    Preamble design on a shared communication medium 有权

    公开(公告)号：US10516618B2

    公开(公告)日：2019-12-24

    申请号：US15615831

    申请日：2017-06-06

    Applicant: QUALCOMM Incorporated

    Inventor： Sanaz Barghi ,  Mohammad Naghshvar ,  Chirag Sureshbhai Patel ,  Ahmed Kamel Sadek ,  Tamer Adel Kadous

    IPC: H04L12/851 ,  H04B17/309 ,  H04L5/00 ,  H04L29/06 ,  H04L12/853 ,  H04W74/00

    Abstract: Techniques for managing preamble transmission and processing on a shared communication medium are disclosed. An access point or an access terminal, for example, may generate a preamble for silencing communication on a communication medium with respect to an upcoming data transmission, configure the preamble to identify one or more target devices for the silencing, and transmit the preamble over the communication medium in advance of the data transmission. Conversely, the access point or the access terminal may receive a preamble (as a receiving device) over a communication medium, identify one or more target devices for silencing communication on the communication medium with respect to an upcoming data transmission based on the preamble, and selectively silence communication over the communication medium based on itself (as the receiving device) being among the one or more target devices.

    SOFT CHANNEL RESERVATION
    8.
    发明申请
    SOFT CHANNEL RESERVATION 审中-公开

    公开(公告)号：US20180255561A1

    公开(公告)日：2018-09-06

    申请号：US15906040

    申请日：2018-02-27

    Applicant: QUALCOMM Incorporated

    Inventor： Sanaz Barghi ,  Jing Sun ,  Mohammad Naghshvar ,  Tamer Kadous

    IPC: H04W72/12

    CPC classification number: H04W72/1231 ,  H04B7/0408 ,  H04J11/0026 ,  H04L1/0026 ,  H04L1/20 ,  H04L5/0073 ,  H04L27/0006 ,  H04L27/26 ,  H04W16/14 ,  H04W16/28 ,  H04W72/1273 ,  H04W74/0816

    Abstract: Soft channel reservation in shared spectrum networks is discussed. In network areas where multiple wireless nodes, whether from the same or different network operators, share spectrum using a channel reservation signaling form of contention resolution, an aggressor transmitter listens for a neighbor receiver's receiver channel reservation signal to the neighbor transmitter the neighbor receiver is in communication with. The receiver channel reservation signal includes channel condition information that the aggressor transmitter can use to estimate an interference impact at the neighbor receiver should the aggressor transmitter performs its transmissions to its own receivers. Based on whether this estimated interference impact exceeds or remains within a particular threshold, the aggressor transmitter may decide whether or not to back off of its transmissions until a later time.

    Techniques for performing carrier sense adaptive transmission in unlicensed spectrum
    9.
    发明授权
    Techniques for performing carrier sense adaptive transmission in unlicensed spectrum 有权

    公开(公告)号：US10356623B2

    公开(公告)日：2019-07-16

    申请号：US14486114

    申请日：2014-09-15

    Applicant: QUALCOMM Incorporated

    Inventor： Ahmed Kamel Sadek ,  Mohammad Naghshvar ,  Nachiappan Valliappan

    IPC: H04W16/14 ,  H04L12/26 ,  H04W72/12

    Abstract: Aspects for reducing interference between networks are provided. A signal transmitted by a first network over a communications medium using an unlicensed frequency spectrum is decoded to determine one or more parameters of a packet in the signal. A level of utilization of the communications medium by the first network can be estimated based at least in part on a signal strength of the signal and the one or more parameters. A time for communicating in a second network over the communications medium using the unlicensed frequency spectrum can be adjusted based at least in part on the level of utilization of the communications medium by the first network.

    LISTEN BEFORE TALK FOR MILLIMETER WAVE MULTI-USER MULTIPLE-INPUT MULTIPLE-OUTPUT COMMUNICATIONS
    10.
    发明申请
    LISTEN BEFORE TALK FOR MILLIMETER WAVE MULTI-USER MULTIPLE-INPUT MULTIPLE-OUTPUT COMMUNICATIONS 审中-公开

    公开(公告)号：US20190141744A1

    公开(公告)日：2019-05-09

    申请号：US16160263

    申请日：2018-10-15

    Applicant: QUALCOMM Incorporated

    Inventor： Mohammad Naghshvar ,  Arumugam Chendamarai Kannan ,  Ahmed Kamel Sadek ,  Tamer Kadous

    IPC: H04W74/08 ,  H04B7/0452 ,  H04B7/06

    Abstract: Methods, systems, and devices for wireless communications are described. A wireless device may include a plurality of antenna panels. The wireless device may perform a first listen before talk (LBT) procedure for a configuration of a first antenna panel based at least in part on a first LBT timer and may perform a second LBT procedure for a configuration of a second antenna panel based at least in part on a second LBT timer. The wireless device may then perform a multiple user multiple-input multiple-output (MU-MIMO) transmission. The MU-MIMO transmission may include transmitting a first packet to a second wireless device using the configuration of the first antenna and transmitting a second packet to a third wireless device using the configuration of the second antenna.

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