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    Enabling distributed access points on high bandwidth cables for band and antenna splitting
    41.
    发明授权
    Enabling distributed access points on high bandwidth cables for band and antenna splitting 有权

    公开(公告)号：US10601475B2

    公开(公告)日：2020-03-24

    申请号：US16383915

    申请日：2019-04-15

    Applicant: Cisco Technology, Inc.

    Inventor： Brian D. Hart ,  Paul J. Stager ,  David Kloper ,  Jie Cheng Jiang

    IPC: H04W72/04 ,  H04B7/0452 ,  H04B7/024 ,  H04W84/12 ,  H04W88/08

    Abstract: A wireless access point device wirelessly communicates with a plurality of wireless client devices. The wireless access point includes a central processor subsystem and a plurality of transceiver devices each including a plurality of antennas, and a plurality of radio transceivers, each of the plurality of transceiver devices configured for deployment throughout a coverage area, each transceiver device being connected to the central processor subsystem via a respective cable. The central processor subsystem distributes in-phase and quadrature baseband samples across the plurality of transceiver devices associated with traffic to be transmitted and received via the plurality of transceiver devices in one or more frequency bands so as to synthesize a wideband multiple-input multiple-output transmission channel and a wideband multiple-input multiple-output reception channel. The access point transmit and receive functions are “split” or partitioned across the plurality of transceivers devices.

    Collision detection and avoidance mechanism using distributed radio heads in a wireless network
    42.
    发明授权
    Collision detection and avoidance mechanism using distributed radio heads in a wireless network 有权

    公开(公告)号：US10306675B2

    公开(公告)日：2019-05-28

    申请号：US15585400

    申请日：2017-05-03

    Applicant: Cisco Technology, Inc.

    Inventor： David Kloper ,  Brian D. Hart ,  Matthew A. Silverman ,  Paul J. Stager

    IPC: H04W74/08 ,  H04W74/00 ,  H04L1/00 ,  H04W88/08

    Abstract: A central processor subsystem controls multiple transceivers. Each transceiver transmits protocol data units from antennas of that transceiver and produces receive waveforms from wirelessly received signals at the one or more antennas. A transmit waveform, including a frame addressed to one or more wireless client devices, is sent through a first transceiver to be transmitted wirelessly by the first transceiver on a frequency channel. A receive waveform, representative of the transmission by the first transceiver and wirelessly received at a second transceiver, is received from the second transceiver. While the transmit waveform is being sent to the first transceiver: a level of collision between the receive waveform and another transmission on the frequency channel is detected; and if the level of collision exceeds a threshold prior to an end of the receive waveform, the transmit waveform being sent to the first transceiver is modified to reduce the collision.

    Scalable multi-channel ranging
    45.
    发明授权
    Scalable multi-channel ranging 有权

    公开(公告)号：US09629119B2

    公开(公告)日：2017-04-18

    申请号：US14837100

    申请日：2015-08-27

    Applicant: Cisco Technology, Inc.

    Inventor： Brian D. Hart

    IPC: H04W64/00 ,  H04W4/06 ,  H04W4/02 ,  H04W84/12

    CPC classification number: H04W64/003 ,  H04W4/02 ,  H04W4/06 ,  H04W64/00 ,  H04W84/12

    Abstract: Techniques are presented herein to coordinate ranging exchanges between base stations in order to enable any number of wireless devices in the vicinity of the base stations to obtain signals associated with ranging exchanges between base stations, time-of-departure report messages transmitted by the base stations to each other and time-of-arrival report messages transmitted by the base stations to each other, for use in computing the location of the wireless devices. Based on the multi-channel time-of-arrivals computed for the wireless device with respect to each base station, the multi-channel time-of-arrivals contained in the time-of-arrival report messages transmitted between base stations and the known locations of the base stations, a physical location is computed for the wireless device.

    Client device location using synchronized wireless receivers
    47.
    发明授权
    Client device location using synchronized wireless receivers 有权
    使用同步无线接收器的客户端设备位置

    公开(公告)号：US09219986B2

    公开(公告)日：2015-12-22

    申请号：US14258104

    申请日：2014-04-22

    Applicant: Cisco Technology, Inc.

    Inventor： Santosh Pandey ,  Brian D. Hart ,  Shaunak Joshi ,  David Kloper ,  Donald R. Peoples

    IPC: H04W4/00 ,  H04W4/02 ,  H04W56/00 ,  H04W88/02

    CPC classification number: H04W4/023 ,  H04W48/16 ,  H04W56/001 ,  H04W64/003

    Abstract: A wireless receiver (e.g., access point (AP)) is a member of a group of a plurality of receivers in a wireless local area network and time synchronized with other receivers in the group. A channel scan list is generated from a plurality of wireless channels available in one or more frequency bands. A channel is selected for the receiver to monitor from the channel scan list based on a current time at the receiver such that each of the plurality of receivers in the group are scanning the same channel at the same time. The selected channel is scanned and signal characteristic information (e.g., received signal strength (RSS)) is generated for the signals received during a given scan duration.

    Abstract translation: 无线接收器（例如，接入点（AP））是无线局域网中的多个接收机的组的成员，并且与该组中的其他接收机同步的时间。 从一个或多个频带中可用的多个无线信道生成频道扫描列表。 基于接收机当前的时间，从频道扫描列表中选择频道以使接收机监视，使得组中的多个接收机中的每一个同时扫描相同的频道。 扫描所选择的信道，并且在给定的扫描持续时间内为接收到的信号生成信号特征信息（例如，接收信号强度（RSS））。

    Scalable multi-channel ranging
    48.
    发明授权
    Scalable multi-channel ranging 有权
    可扩展的多通道测距

    公开(公告)号：US09148752B2

    公开(公告)日：2015-09-29

    申请号：US13855278

    申请日：2013-04-02

    Applicant: Cisco Technology, Inc.

    Inventor： Brian D. Hart

    IPC: H04W64/00 ,  H04W4/02

    CPC classification number: H04W64/003 ,  H04W4/02 ,  H04W4/06 ,  H04W64/00 ,  H04W84/12

    Abstract: Techniques are presented herein to coordinate ranging exchanges between base stations in order to enable any number of wireless devices in the vicinity of the base stations to obtain signals associated with ranging exchanges between base stations, time-of-departure report messages transmitted by the base stations to each other and time-of-arrival report messages transmitted by the base stations to each other, for use in computing the location of the wireless devices. Based on the multi-channel time-of-arrivals computed for the wireless device with respect to each base station, the multi-channel time-of-arrivals contained in the time-of-arrival report messages transmitted between base stations and the known locations of the base stations, a physical location is computed for the wireless device.

    Abstract translation: 这里介绍了技术来协调基站之间的测距交换，以使得基站附近的任何数量的无线设备能够获得与基站之间的测距交换相关联的信号，由基站发送的发往时间的报告消息 彼此之间以及由基站彼此发送的到达时间报告消息，以用于计算无线设备的位置。 基于针对每个基站为无线设备计算的多信道到达时间，包括在基站和已知位置之间传送的到达时间报告消息中的多信道到达时间 的基站，为无线设备计算物理位置。

    Dynamic Bandwidth Selection for Wide Bandwidth Wireless Local Area Networks
    49.
    发明申请
    Dynamic Bandwidth Selection for Wide Bandwidth Wireless Local Area Networks 有权
    宽带宽无线局域网的动态带宽选择

    公开(公告)号：US20140098748A1

    公开(公告)日：2014-04-10

    申请号：US13647517

    申请日：2012-10-09

    Applicant: CISCO TECHNOLOGY, INC.

    Inventor： Douglas Chan ,  Mansoor Ahmed ,  Ahmadreza Hedayat ,  Brian D. Hart

    IPC: H04W72/04

    CPC classification number: H04W72/082 ,  H04W72/0453 ,  H04W84/12

    Abstract: Dynamic bandwidth selection techniques are provided for a plurality of wireless access point devices that operate in a wireless local area network. Each access point device is capable of serving wireless client devices with a bandwidth from a set of possible bandwidths associated with one or multiple contiguous or non-contiguous radio frequency channels. A bias is generated based on determined type of traffic or client composition for each access point device, the bias favoring a channel assignment that results in a particular bandwidth in the set of bandwidths. The bias is applied to metrics representing severity and degree of interference for each channel to generate adjusted metrics. A bandwidth from the set of possible bandwidths is selected for each access point device based on the adjusted metrics.

    Abstract translation: 为在无线局域网中操作的多个无线接入点设备提供动态带宽选择技术。 每个接入点设备能够从与一个或多个连续或不连续射频信道相关联的一组可能带宽中为带宽提供无线客户端设备。 基于针对每个接入点设备的确定的业务类型或客户端组合产生偏差，偏好有利于导致该组带宽中的特定带宽的信道分配。 该偏差被应用于表示每个信道的严重性和干扰程度以产生经调整的度量的度量。 基于经调整的度量，为每个接入点设备选择来自该组可能带宽的带宽。

    NETWORK THROUGHPUT
    50.
    发明申请
    NETWORK THROUGHPUT 有权

    公开(公告)号：US20240381233A1

    公开(公告)日：2024-11-14

    申请号：US18541052

    申请日：2023-12-15

    Applicant: Cisco Technology, Inc.

    Inventor： Indermeet S. Gandhi ,  Brian D. Hart ,  Jerome Henry ,  Shailender Potharaju

    IPC: H04W48/16 ,  H04W28/02

    Abstract: Improving network throughput and, specifically, improving network throughput for networks comprising sub-7.25 GHz and millimeter wave links may be provided. Improving network throughput may include determining device information of a Station (STA). The STA may be enabled to communicate on a 60 (GHz) band in addition to sub 7.25 GHz bands based on the device information.

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