公开(公告)号：US11445500B2

公开(公告)日：2022-09-13

申请号：US16868312

申请日：2020-05-06

Applicant: Cisco Technology, Inc.

Inventor： Akram I. Sheriff ,  Pascal Thubert ,  Jerome Henry ,  Robert E. Barton

IPC: H04W72/04 ,  H04W52/34 ,  H04L12/18 ,  H04L1/00 ,  H04W92/20 ,  H04W88/08

Abstract: Providing for time sensitive networking (TSN) traffic in high density deployments is described. An access point (AP) is a high density deployment receives a message identifying another AP as a TSN neighbor and also detects a TSN device within an area covered by the APs. This arrangement may cause traffic interruptions for the TSN traffic between the TSN device and the APs. In order to prevent disruption in TSN traffic, a TSN time slot and a resource unit (RU) is determined for each of the APs, and the TSN traffic is communicated between the various devices in network according to the determined TSN time slot and RU.

公开(公告)号：US11432185B2

公开(公告)日：2022-08-30

申请号：US17077865

申请日：2020-10-22

Applicant: Cisco Technology, Inc.

Inventor： Robert E. Barton ,  Jerome Henry ,  Akram I. Sheriff ,  Thomas Szigeti

IPC: H04W28/02 ,  H04L1/00

Abstract: Techniques and apparatus for managing congestion in a wireless network are provided. One technique includes receiving one or more buffer status reports (BSRs) from one or more client stations. Each BSR indicates an amount of traffic in a transmit queue of the client station. An allocation of resource units (RUs) for the one or more client stations is determined, based on at least a type of traffic in each transmit queue of the one or more client stations, upon a determination that there is congestion on an uplink wireless channel shared by the one or more client stations. A frame that includes an indication of the allocation of RUs for the one or more client stations is generated. The frame is transmitted to the one or more client stations.

公开(公告)号：US11979862B2

公开(公告)日：2024-05-07

申请号：US17929294

申请日：2022-09-01

Applicant: Cisco Technology, Inc.

Inventor： Akram I. Sheriff ,  Pascal Thubert ,  Jerome Henry ,  Robert E. Barton

IPC: H04W72/0446 ,  H04L1/00 ,  H04L12/18 ,  H04W52/34 ,  H04W88/08 ,  H04W92/20

CPC classification number: H04W72/0446 ,  H04L1/0003 ,  H04L12/189 ,  H04W52/34 ,  H04W88/08 ,  H04W92/20

Abstract: Providing for time sensitive networking (TSN) traffic in high density deployments is described. An access point (AP) is a high density deployment receives a message identifying another AP as a TSN neighbor and also detects a TSN device within an area covered by the APs. This arrangement may cause traffic interruptions for the TSN traffic between the TSN device and the APs. In order to prevent disruption in TSN traffic, a TSN time slot and a resource unit (RU) is determined for each of the APs, and the TSN traffic is communicated between the various devices in network according to the determined TSN time slot and RU.

公开(公告)号：US11726173B2

公开(公告)日：2023-08-15

申请号：US16880797

申请日：2020-05-21

Applicant: Cisco Technology, Inc.

Inventor： Akram I. Sheriff ,  Jerome Henry ,  Robert E. Barton ,  Pooya Monajemi

IPC: G01S7/36 ,  G01S13/76 ,  H04W12/00

CPC classification number: G01S7/36 ,  G01S13/762 ,  G01S13/765 ,  H04W12/00

Abstract: Embodiments for securing fine timing measurement (FTM) communications are described. FTM communications include FTM frames sent and received from an initiating station (ISTA) and a responding station (RSTA). The RSTA records a plurality of parameters associated with the FTM frames and uses the plurality of parameters to learn and identify a device profile for the ISTA. The device profile is used to determine a behavior filter for the FTM from the ISTA and the RSTA filters FTM traffic according to the behavior filter to prevent malicious attacks in the FTM communications.

公开(公告)号：US11737048B2

公开(公告)日：2023-08-22

申请号：US17368676

申请日：2021-07-06

Applicant: Cisco Technology, Inc.

Inventor： Akram I. Sheriff ,  Jerome Henry ,  Robert E. Barton ,  Matthew A. Silverman

IPC: H04W24/00 ,  H04W64/00 ,  H04W24/10 ,  H04W4/02 ,  G01S11/06

CPC classification number: H04W64/003 ,  G01S11/06 ,  H04W4/023 ,  H04W24/10

Abstract: A method includes estimating distances between a user device and an access point based on a series of FTM ranging bursts exchanged between the user device and the access point. The method also includes calculating a variance of the estimated distances and in response to determining that the variance exceeds a threshold, instructing the user device to perform an action that reduces the variance. Other embodiments include a device that performs this method.

公开(公告)号：US11337176B2

公开(公告)日：2022-05-17

申请号：US16900740

申请日：2020-06-12

Applicant: Cisco Technology, Inc.

Inventor： Shankar Ramanathan ,  Akram I. Sheriff ,  Jerome Henry

IPC: H04W64/00 ,  H04W4/029 ,  H04B17/318 ,  H04W24/10

Abstract: Techniques for access point (AP) based location computation are disclosed. A target wireless AP, communicatively coupled to a wireless station (STA), is identified. One or more location buddy APs, relating to the target AP, are identified based on the physical locations of the location buddy APs and the target AP. It is determined that a first location buddy AP, of the one or more location buddy APs, is communicatively coupled to the STA, and in response a location of the STA is determined using the target AP.

公开(公告)号：US10945231B1

公开(公告)日：2021-03-09

申请号：US16810707

申请日：2020-03-05

Applicant: Cisco Technology, Inc.

Inventor： Jerome Henry ,  Akram I. Sheriff ,  Vishal S. Desai ,  Santosh Ramrao Patil ,  Robert E. Barton

IPC: H04W4/00 ,  H04W64/00 ,  H04W24/10 ,  G01S11/06 ,  H04W4/30 ,  H04W4/02

Abstract: Techniques for improved wireless ranging are provided. A first communication from a first device is received at a first access point. A predefined minimum distance is determined for the first access point, where the predefined minimum distance corresponds to a distance at which the vertical location of the first access point causes inaccurate location estimations. A first distance of the first device from the first access point is estimated. Upon determining that the first distance of the first device is below the predefined minimum distance, fine timing measurement (FTM) requests from the first device are declined.

公开(公告)号：US11979848B2

公开(公告)日：2024-05-07

申请号：US17663587

申请日：2022-05-16

Applicant: Cisco Technology, Inc.

Inventor： Shankar Ramanathan ,  Akram I. Sheriff ,  Jerome Henry

IPC: H04W64/00 ,  H04B17/318 ,  H04W4/029 ,  H04W24/10

CPC classification number: H04W64/003 ,  H04B17/318 ,  H04W4/029 ,  H04W24/10 ,  H04W64/006

Abstract: Techniques for access point (AP) based location computation are disclosed. A target wireless AP, communicatively coupled to a wireless station (STA), is identified. One or more location buddy APs, relating to the target AP, are identified based on the physical locations of the location buddy APs and the target AP. It is determined that a first location buddy AP, of the one or more location buddy APs, is communicatively coupled to the STA, and in response a location of the STA is determined using the target AP.

公开(公告)号：US11490356B2

公开(公告)日：2022-11-01

申请号：US17146362

申请日：2021-01-11

Applicant: Cisco Technology, Inc.

Inventor： Jerome Henry ,  Akram I. Sheriff ,  Vishal S. Desai ,  Santosh Ramrao Patil ,  Robert E. Barton

IPC: H04W24/00 ,  H04W64/00 ,  H04W24/10 ,  G01S11/06 ,  H04W4/30 ,  H04W4/02

Abstract: Techniques for improved wireless ranging are provided. A first communication from a first client device is received at a first network device. A predefined minimum distance is determined for the first access point, where the predefined minimum distance corresponds to a distance at which the vertical location of the first network device causes time of flight ranging techniques to result in inaccurate location estimations. A first distance of the first client device from the first network device is estimated. Upon determining that the first distance of the first client device is below the predefined minimum distance, ToF ranging requests from the first client device are declined.

公开(公告)号：US11375439B2

公开(公告)日：2022-06-28

申请号：US16902038

申请日：2020-06-15

Applicant: Cisco Technology, Inc.

Inventor： Jerome Henry ,  Akram I. Sheriff ,  Sudhir K. Jain ,  Pooya Monajemi

IPC: H04B7/0413 ,  H04B7/06 ,  H04B17/24 ,  H04B17/27 ,  H04W24/08 ,  H04W24/10 ,  H04W48/04 ,  H04W48/06 ,  H04W48/16 ,  H04W64/00 ,  H04W72/12 ,  H04W84/12 ,  H04W88/08 ,  H04W92/10

Abstract: Aspects described herein include a method comprising receiving an initial Fine Timing Measurement (FTM) request from an Initiating Station (ISTA), determining a priority classification of the ISTA relative to other ISTAs, and determining, based at least partly on the priority classification, whether to accept the initial FTM request.