公开(公告)号：US20240283506A1

公开(公告)日：2024-08-22

申请号：US18171774

申请日：2023-02-21

Applicant: Cisco Technology, Inc.

Inventor： Matthew Aaron Silverman ,  Ardalan Alizadeh ,  John Matthew Swartz

IPC: H04B7/06

CPC classification number: H04B7/0626 ,  H04B7/0617

Abstract: Connection issue prediction may be provided. A computing device may receive first Channel State Information (CSI) for a first link associated with a client device. The first CSI may be collected when beamforming was trained on a second link associated with the client device. Second CSI may be received for the first link associated with the client device. The second CSI may be collected at a time subsequent to when beamforming was trained on the second link associated with the client device. A correlation between the first CSI and the second CSI may be determined to be below a predetermined threshold. A status of the beamforming performed on the second link associated with the client device may be set to stale in response to determining that the correlation between the first CSI and the second CSI is below the predetermined threshold.

公开(公告)号：US11943016B2

公开(公告)日：2024-03-26

申请号：US17989262

申请日：2022-11-17

Applicant: Cisco Technology, Inc.

Inventor： John Matthew Swartz ,  Nagendra Kumar Nainar ,  Matthew Aaron Silverman

IPC: H04B7/0452 ,  H04B7/0426 ,  H04B17/327 ,  H04B17/336

CPC classification number: H04B7/0452 ,  H04B7/0426 ,  H04B17/327 ,  H04B17/336

Abstract: Presented herein are techniques to shield transmissions from being received and the information contained in them recovered by unwanted devices. Multi-user multiple-input multiple-output (MU-MIMO) techniques are employed, and in particular the spatial dimension aspects of those techniques. Shield nodes are controlled to transmit in a way to obscure the downlink streams transmitted by a wireless access point that are intended for a particular client device to anything outside of the shielded area, and also to obscure uplink streams from one or more client devices to the wireless access point to anything outside of the shielded area but allowing the uplink streams to be well received by the wireless access point.

公开(公告)号：US20240090032A1

公开(公告)日：2024-03-14

申请号：US18465626

申请日：2023-09-12

Applicant: Cisco Technology, Inc.

Inventor： Brian D. Hart ,  Matthew Aaron Silverman ,  Malcolm Muir Smith ,  Jerome Henry

IPC: H04W74/08 ,  H04L1/00

CPC classification number: H04W74/0816 ,  H04L1/0003

Abstract: Preemption in wireless may be provided. Access Category (AC) parameters may be received for a preemption AC within a plurality of ACs. The preemption AC parameters may comprise a Contention Window maximum (CWmax) comprising a first predetermined value and a preemption Arbitrary Interframe Space Number (AIFSN) of less than or equal to a second predetermined value. AC parameters for others of the plurality of ACs may be received wherein a non-preemption AIFSN associated with any of the others of the plurality of ACs is greater than a sum of the first predetermined value the second predetermined value. Preemption for traffic in the preemption AC may be allowed.

公开(公告)号：US11924857B2

公开(公告)日：2024-03-05

申请号：US17983502

申请日：2022-11-09

Applicant: Cisco Technology, Inc.

Inventor： Matthew Aaron Silverman ,  Ardalan Alizadeh ,  Pooya Monajemi ,  Jerome Henry

IPC: H04W72/51 ,  H04W84/12

CPC classification number: H04W72/51 ,  H04W84/12

Abstract: In one embodiment, a method comprises first causing, by a controller device, wireless access points (APs) to allocate first non-interfering wireless channels for a prescribed reliable data service for wireless client devices in a WLAN; second causing the wireless APs to allocate a second shared channel having a bandwidth that is greater than the corresponding bandwidth of any of the first non-interfering wireless channels; allocating for each wireless client device a corresponding location service interval on the second shared channel for transmission of at least a corresponding identifiable wireless data unit for locating the corresponding wireless client device between two or more of the wireless APs; and determining a location of at least one of the wireless client devices based on reception of at least the corresponding wireless data unit between the one wireless client device and the two or more wireless APs during the corresponding location service interval.

公开(公告)号：US20240045046A1

公开(公告)日：2024-02-08

申请号：US18480871

申请日：2023-10-04

Applicant: Cisco Technology, Inc.

Inventor： Jerome Henry ,  Robert Edgar Barton ,  Matthew Aaron Silverman

IPC: G01S13/02 ,  H04W76/15 ,  H04W76/11 ,  G01S5/14 ,  G01S13/76 ,  H04W64/00

CPC classification number: G01S13/0209 ,  H04W76/15 ,  H04W76/11 ,  G01S5/145 ,  G01S13/765 ,  H04W64/003

Abstract: Presented herein are infrastructure triggering techniques for secure Ultra-Wideband (UWB) ranging. In one example, a method may include providing UWB ranging parameters to a mobile device via a first radio communication, wherein the first radio communication is a non-UWB radio communication; and triggering the mobile device to perform UWB ranging with a UWB anchor, wherein the triggering is performed using a second radio communication. In another example, a method may include, obtaining, by a mobile device, UWB ranging parameters for a geographic area; obtaining a UWB ranging instruction for the geographic area; and performing UWB ranging with a target UWB anchor based on the UWB ranging parameters and the UWB ranging instruction.

公开(公告)号：US11812334B2

公开(公告)日：2023-11-07

申请号：US17885981

申请日：2022-08-11

Applicant: Cisco Technology, Inc.

Inventor： Jerome Henry ,  Robert Edgar Barton ,  Matthew Aaron Silverman

IPC: H04W4/02 ,  H04B1/7163 ,  H04W74/08

CPC classification number: H04W4/023 ,  H04B1/7163 ,  H04W74/0825

Abstract: Presented herein are techniques for assigning Ultra-Wideband (UWB) anchors for client ranging. A control device can monitor UWB ranging between a mobile device and a primary anchor. In response to determining that a signal strength between the mobile device and the primary anchor is below a threshold, the control device can identify anchors for which the mobile device has had a signal strength above the threshold during a period of time, and select one of the anchors as a new primary anchor for the mobile device. For example, the control device can select the new primary anchor based on a relative collision tolerance mapping for the new primary anchor and at least one other anchor within a UWB range of the new primary anchor. The control device can send a command causing UWB ranging to be performed between the mobile device and the new primary anchor.

公开(公告)号：US11785477B2

公开(公告)日：2023-10-10

申请号：US17409468

申请日：2021-08-23

Applicant: Cisco Technology, Inc.

Inventor： Salvatore Valenza ,  Samer Salam ,  Taha Hajar ,  Nikodin Ristanovic ,  Arun G. Khanna ,  Matthew Aaron Silverman

IPC: H04W16/22 ,  H04B17/391 ,  H04B17/318 ,  H04W16/20

CPC classification number: H04W16/225 ,  H04B17/318 ,  H04B17/391 ,  H04W16/20

Abstract: The present technology is directed to providing a 3-D visualization of a Wi-Fi signal propagation pattern based on telemetry data. The present technology can receive telemetry data for a Wi-Fi access point located at a location of a building plan in a Wi-Fi visualization system, store the telemetry data with a timestamp, determine a change in a Wi-Fi coverage for the Wi-Fi access point based on the telemetry data, and present a visualization illustrating the change in the Wi-Fi coverage for the Wi-Fi access point. The present technology can further present an animation of the change in the Wi-Fi coverage for the Wi-Fi access point based on the stored telemetry data.

公开(公告)号：US11777625B2

公开(公告)日：2023-10-03

申请号：US17481916

申请日：2021-09-22

Applicant: Cisco Technology, Inc.

Inventor： Salvatore Valenza ,  Samer Salam ,  Taha Hajar ,  Nikodin Ristanovic ,  Arun G. Khanna ,  Matthew Aaron Silverman ,  James Florwick

IPC: H04B17/391 ,  G06T15/06 ,  G06T15/08 ,  H04W36/00 ,  H04W28/08 ,  H04W84/12 ,  H04W72/29 ,  H04W28/086

CPC classification number: H04B17/391 ,  G06T15/06 ,  G06T15/08 ,  H04W28/0865 ,  H04W36/0077 ,  H04W72/29 ,  H04W84/12

Abstract: The present technology is directed to visualizing a Wi-Fi access point (AP) signal propagation pattern through multiple floors. The present technology can execute a Wi-Fi signal propagation model corresponding to a first AP on a first floor of a building plan and a second AP on a second floor of the building plan. The Wi-Fi signal propagation model calculates a Wi-Fi signal propagation pattern for a plurality of APs including the first AP and the second AP. The present technology can further present a visualization of the Wi-Fi signal propagation pattern for the plurality of APs, wherein the Wi-Fi signal propagation pattern for the first AP on the first floor of the building plan projects onto the second floor of the building plan.

公开(公告)号：US20220386266A1

公开(公告)日：2022-12-01

申请号：US17885987

申请日：2022-08-11

Applicant: Cisco Technology, Inc.

Inventor： Jerome Henry ,  Robert Edgar Barton ,  Matthew Aaron Silverman

IPC: H04W64/00 ,  H04B1/69

Abstract: Presented herein are techniques for assigning Ultra-Wideband (UWB) anchors for client ranging. A location server can estimate a coarse location of a mobile device using a localization technique other than a UWB localization technique. The localization technique can involve multiple wireless access points or other radio devices. The location server can define an area around the coarse location to identify a set of candidate anchors for UWB ranging. The set of candidate anchors can be disposed within the area and include at least a subset of the radio devices. The location server can modify the set of candidate anchors to create a modified set of candidate anchors that includes only UWB-enabled devices. The location server can select a primary anchor from the modified set of candidate anchors and send a command to cause a UWB ranging procedure to be initiated between the primary anchor and the mobile device.

公开(公告)号：US20220386069A1

公开(公告)日：2022-12-01

申请号：US17885981

申请日：2022-08-11

Applicant: Cisco Technology, Inc.

Inventor： Jerome Henry ,  Robert Edgar Barton ,  Matthew Aaron Silverman

IPC: H04W4/02 ,  H04W74/08 ,  H04B1/7163

Abstract: Presented herein are techniques for assigning Ultra-Wideband (UWB) anchors for client ranging. A control device can monitor UWB ranging between a mobile device and a primary anchor. In response to determining that a signal strength between the mobile device and the primary anchor is below a threshold, the control device can identify anchors for which the mobile device has had a signal strength above the threshold during a period of time, and select one of the anchors as a new primary anchor for the mobile device. For example, the control device can select the new primary anchor based on a relative collision tolerance mapping for the new primary anchor and at least one other anchor within a UWB range of the new primary anchor. The control device can send a command causing UWB ranging to be performed between the mobile device and the new primary anchor.