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    RADAR-BASED RADIO FREQUENCY (RF) SENSING
    31.
    发明公开
    RADAR-BASED RADIO FREQUENCY (RF) SENSING 审中-公开

    公开(公告)号：US20230236303A1

    公开(公告)日：2023-07-27

    申请号：US17584865

    申请日：2022-01-26

    Applicant: QUALCOMM Incorporated

    Inventor： Solomon TRAININ ,  Assaf Yaakov KASHER ,  Alecsander Petru EITAN ,  Alireza RAISSINIA

    IPC: G01S13/42

    CPC classification number: G01S13/42

    Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for radio frequency (RF) sensing in the millimeter-wave frequency spectrum that can be performed over multiple phases. During a session setup phase, a radar initiator identifies one or more wireless stations (STAs) that are capable of radar ranging and sets up a radar measurement session that includes at least one of the identified STAs. During a measurement negotiation phase, the radar initiator performs a respective beamforming training operation with each STA and indicates, to each STA, one or more parameters associated with the radar measurement session. During a radar measurement phase, the radar initiator transmits radar setup information to, and receives ranging information from, each STA. In some aspects, the radar initiator may perform an object detection operation that indicates a location of an object associated with the ranging information received from each radar STA.

    SECURE LONG TRAINING FIELD (LTF)
    32.
    发明申请
    SECURE LONG TRAINING FIELD (LTF) 有权

    公开(公告)号：US20210344541A1

    公开(公告)日：2021-11-04

    申请号：US17244500

    申请日：2021-04-29

    Applicant: QUALCOMM Incorporated

    Inventor： Stephen Jay SHELLHAMMER ,  Bin TIAN ,  Alireza RAISSINIA ,  Youhan KIM

    IPC: H04L27/26 ,  H04L5/00

    Abstract: This disclosure provides methods, devices and systems for generating a secure long training field (LTF). In some implementations, the secure LTF may include a randomized bit sequence that is difficult, if not impossible, to replicate by any device other than the transmitting device and the intended receiving device. For example, the transmitting device may use a block cipher or stream cipher to generate a pseudorandom bit sequence and may select a subset of bits of the pseudorandom bit sequence to be mapped to a sequence of modulation symbols representing an LTF symbol of the secure LTF. More specifically, each of the modulation symbols is mapped to a respective one of a number of subcarriers spanning a bandwidth of the secure LTF. The transmitting device may further transmit a physical layer convergence protocol (PLCP) protocol data unit (PPDU) that includes the secure LTF to the receiving device.

    PROTECTION OF RANGING SOUNDING SIGNALS FROM PHYSICAL LEVEL ATTACKS
    33.
    发明申请
    PROTECTION OF RANGING SOUNDING SIGNALS FROM PHYSICAL LEVEL ATTACKS 审中-公开

    公开(公告)号：US20190052484A1

    公开(公告)日：2019-02-14

    申请号：US16152998

    申请日：2018-10-05

    Applicant: QUALCOMM Incorporated

    Inventor： Erik David LINDSKOG ,  Ning ZHANG ,  Naveen Kumar KAKANI ,  Alireza RAISSINIA ,  Xiaoxin ZHANG

    IPC: H04L25/02 ,  H04L29/06 ,  H04W12/12

    Abstract: Generally, the described techniques provide for protection mechanisms for sounding training signals transmitted between wireless devices when performing ranging sounding estimation. For example, sounding training signals may be encoded to include a sequence of phase rotations or cyclic shifts to protect the sounding training signal from peer devices. In some cases, encoding information associated with a long training field (LTF) may be transmitted either before or after the LTF is transmitted. Additionally or alternatively, a time delay may be introduced to the sounding training signal, where timing information may be removed from one or more fields of the sounding training signal and the time delay may be appended to an interframe spacing. Alternatively, a frame may be split into multiple frames with the sounding training signal in a first frame, and timing information in a second frame that is offset in time from the first frame.

    COMMUNICATION BETWEEN DEVICES OF A NEIGHBOR AWARE NETWORK
    36.
    发明申请
    COMMUNICATION BETWEEN DEVICES OF A NEIGHBOR AWARE NETWORK 有权
    邻里网络设备之间的通信

    公开(公告)号：US20160112984A1

    公开(公告)日：2016-04-21

    申请号：US14883518

    申请日：2015-10-14

    Applicant: QUALCOMM Incorporated

    Inventor： Abhishek Pramod Patil ,  Santosh Paul ABRAHAM ,  George CHERIAN ,  Alireza RAISSINIA ,  James CHO ,  Guido FREDERIKS

    IPC: H04W68/00

    CPC classification number: H04W68/005 ,  H04W48/16 ,  H04W52/0216 ,  H04W84/12 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/166 ,  Y02D70/22 ,  Y02D70/23 ,  Y02D70/26

    Abstract: A method includes generating, at a first device, a paging message. The method includes, during a first transmission window of a data link group of a neighbor aware network (NAN), sending the paging message from the first device to one or more devices of the data link group. The method further includes, during a second transmission window of the data link group and prior to a data window of the second transmission window, sending data traffic to a particular device of the one or more devices without sending a traffic announcement to the particular device during a second paging window of the second transmission window.

    Abstract translation: 一种方法包括在第一设备处生成寻呼消息。 该方法包括在邻居感知网络（NAN）的数据链路组的第一传输窗口期间将寻呼消息从第一设备发送到数据链路组的一个或多个设备。 该方法还包括在数据链路组的第二传输窗口期间和在第二传输窗口的数据窗口之前，将数据业务发送到一个或多个设备的特定设备，而不向该特定设备发送业务通告 第二传输窗口的第二寻呼窗口。

    NEIGHBOR AWARE NETWORK LOGICAL CHANNELS
    37.
    发明申请
    NEIGHBOR AWARE NETWORK LOGICAL CHANNELS 有权
    NEIGHBOR AWARE网络逻辑通道

    公开(公告)号：US20160088611A1

    公开(公告)日：2016-03-24

    申请号：US14861685

    申请日：2015-09-22

    Applicant: QUALCOMM Incorporated

    Inventor： Santosh Paul Abraham ,  Abhishek Pramod PATIL ,  George CHERIAN ,  Alireza RAISSINIA

    IPC: H04W72/04

    CPC classification number: H04W8/005 ,  H04W4/80 ,  H04W48/16 ,  H04W68/00 ,  H04W84/18

    Abstract: A method of communication includes transmitting a message from a first electronic device of a neighbor aware network (NAN) to a second electronic device of the NAN via a first communication channel of a plurality of communication channels during a discovery window. The message indicates that the first electronic device is available to communicate. The method also includes monitoring a second communication channel of the plurality of communication channels during a first paging window of a transmission window. The first paging window includes a beginning portion of the transmission window, and electronic devices of the NAN are in an active state during the first paging window.

    Abstract translation: 一种通信方法包括：在发现窗口期间，经由多个通信信道的第一通信信道，从邻居感知网络（NAN）的第一电子设备向NAN的第二电子设备发送消息。 消息表明第一个电子设备可用于通信。 该方法还包括在传输窗口的第一寻呼窗口期间监视多个通信信道中的第二通信信道。 第一寻呼窗口包括传输窗口的开始部分，并且NAN的电子设备在第一寻呼窗口期间处于活动状态。

    SOUNDING FOR TRIGGER-BASED RANGING
    40.
    发明申请
    SOUNDING FOR TRIGGER-BASED RANGING 有权

    公开(公告)号：US20250024406A1

    公开(公告)日：2025-01-16

    申请号：US18350562

    申请日：2023-07-11

    Applicant: QUALCOMM Incorporated

    Inventor： Patrick Poon-Cheuk CHAN ,  Xiaoxin ZHANG ,  Alireza RAISSINIA

    IPC: H04W64/00 ,  H04L5/00

    Abstract: This disclosure provides methods, components, devices, and systems for sounding for trigger-based ranging. Some aspects more specifically relate to a first wireless device dividing a frequency bandwidth available for ranging procedures into a plurality of subbands in accordance with orthogonal frequency-division multiple access (OFDMA) techniques. In some implementations, the first wireless device may transmit a trigger frame that assigns a subband to a respective neighbor wireless device. Each respective neighbor wireless device may transmit, during a same time occasion, a respective sounding signal via each respective subband allocated to the respective neighbor wireless device. In some implementations, the first wireless device may perform sounding procedures using combined multiple input multiple output (MIMO) and OFDMA techniques, where each neighbor wireless device may be assigned a respective spatial stream. Accordingly, the first wireless device may support sounding procedures for larger quantities of neighbor wireless devices.

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