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    RESOURCE ALLOCATION FOR OFDMA WITH PRESERVATION OF WIRELESS LOCATION ACCURACY
    1.
    发明申请
    RESOURCE ALLOCATION FOR OFDMA WITH PRESERVATION OF WIRELESS LOCATION ACCURACY 审中-公开

    公开(公告)号：US20190215842A1

    公开(公告)日：2019-07-11

    申请号：US15865877

    申请日：2018-01-09

    Applicant: Cisco Technology, Inc.

    Inventor： Matt Silverman ,  Zhigang Gao ,  Oscar Bejarano Chavez ,  John Matthew Swartz ,  Santosh Ghanshyam Pandey

    IPC: H04W72/08 ,  H04B7/06 ,  H04W24/10 ,  H04W48/00

    Abstract: In one embodiment, a control device associated with a wireless network of a given location determines a reference quality of location readings between access points and client devices based on using substantially all of an available wireless communication bandwidth. The control device may then determine channel state information (CSI) between the client devices and access points for each orthogonal frequency-division multiple access (OFDMA) resource unit (RU), and selects a subset of RUs for allocation to each respective client device, based on the subset of RUs allocated to each respective client device i) surpassing a determined threshold of certain parameters of the CSI, while also ii) providing a minimum quality of a location reading based on using only the subset of RUs as compared to the reference quality of location readings. The control device may then allocate the selected subset of RUs to each respective client device for location-preserving OFDMA-signaling-based communication.

    POSITIONAL PRECODING DERATION FOR COOPERATIVE MIMO
    3.
    发明申请
    POSITIONAL PRECODING DERATION FOR COOPERATIVE MIMO 审中-公开

    公开(公告)号：US20190068289A1

    公开(公告)日：2019-02-28

    申请号：US15722083

    申请日：2017-10-02

    Applicant: Cisco Technology, Inc.

    Inventor： Fred J. Anderson ,  Oscar Bejarano Chavez ,  Matthew A. Silverman ,  Paul J. Stager

    IPC: H04B10/564 ,  H04B10/079 ,  H04B7/024 ,  H04W52/02

    Abstract: Presented herein are techniques to ensure power emitted by APs during a cooperative MIMO transmission is within certain limits. For a transmission to be made from two or more wireless access points using cooperative multiple-input multiple-output (MIMO) techniques, a measure of separation is determined between the two or more access points. Precoding of signals to be transmitted by the two or more access points is adjusted so as to derate the signals to be transmitted or disable the cooperative nature of the transmission from the two or more access point depending on the measure of separation so that a combined output power from the two or more access points is within a limit.

    Positional precoding deration for cooperative MIMO
    5.
    发明授权
    Positional precoding deration for cooperative MIMO 有权

    公开(公告)号：US10243665B2

    公开(公告)日：2019-03-26

    申请号：US15722083

    申请日：2017-10-02

    Applicant: Cisco Technology, Inc.

    Inventor： Fred J. Anderson ,  Oscar Bejarano Chavez ,  Matthew A. Silverman ,  Paul J. Stager

    IPC: H04B10/564 ,  H04W52/02 ,  H04B7/024 ,  H04B10/079

    Abstract: Presented herein are techniques to ensure power emitted by APs during a cooperative MIMO transmission is within certain limits. For a transmission to be made from two or more wireless access points using cooperative multiple-input multiple-output (MIMO) techniques, a measure of separation is determined between the two or more access points. Precoding of signals to be transmitted by the two or more access points is adjusted so as to derate the signals to be transmitted or disable the cooperative nature of the transmission from the two or more access point depending on the measure of separation so that a combined output power from the two or more access points is within a limit.

    Motion detection for passive indoor positioning system
    6.
    发明授权
    Motion detection for passive indoor positioning system 有权

    公开(公告)号：US10932087B2

    公开(公告)日：2021-02-23

    申请号：US16702319

    申请日：2019-12-03

    Applicant: CISCO TECHNOLOGY, INC.

    Inventor： Huy Phuong Tran ,  Abhishek Mukherji ,  Rong Peng ,  Oscar Bejarano Chavez ,  Santosh Ghanshyam Pandey

    IPC: H04W4/02 ,  G06N3/08 ,  H04W4/80 ,  H04W4/029 ,  H04W4/33 ,  H04W84/12 ,  H04W64/00 ,  G06N3/04 ,  G06N20/00

    Abstract: An enterprise system configures access point devices at an enterprise location to communicate with a location determination system. The location determination system receives wireless signal attributes of user computing devices broadcasting Wi-Fi signal data at the enterprise location from one or more access point devices. For a particular time window, the location determination system determines aggregated features of received wireless signal data across all access point devices, and classifies each of the user computing devices as moving or stationary by applying the wireless signal data to a model. For each of the user computing devices determined to be moving, the location determination system calculates a respective position of the user computing device based on the wireless signal data. For each of the user computing devices determined to be stationary, the location determination system does not calculate a respective position of the respective user computing device.

    Resource allocation for OFDMA with preservation of wireless location accuracy
    8.
    发明授权
    Resource allocation for OFDMA with preservation of wireless location accuracy 有权

    公开(公告)号：US10524272B2

    公开(公告)日：2019-12-31

    申请号：US15865877

    申请日：2018-01-09

    Applicant: Cisco Technology, Inc.

    Inventor： Matt Silverman ,  Zhigang Gao ,  Oscar Bejarano Chavez ,  John Matthew Swartz ,  Santosh Ghanshyam Pandey

    IPC: H04W24/10 ,  H04W72/08 ,  H04W48/00 ,  H04B7/06

    Abstract: In one embodiment, a control device associated with a wireless network of a given location determines a reference quality of location readings between access points and client devices based on using substantially all of an available wireless communication bandwidth. The control device may then determine channel state information (CSI) between the client devices and access points for each orthogonal frequency-division multiple access (OFDMA) resource unit (RU), and selects a subset of RUs for allocation to each respective client device, based on the subset of RUs allocated to each respective client device i) surpassing a determined threshold of certain parameters of the CSI, while also ii) providing a minimum quality of a location reading based on using only the subset of RUs as compared to the reference quality of location readings. The control device may then allocate the selected subset of RUs to each respective client device for location-preserving OFDMA-signaling-based communication.

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