公开(公告)号：US11632723B2

公开(公告)日：2023-04-18

申请号：US17000534

申请日：2020-08-24

Applicant: Cisco Technology, Inc.

Inventor： Vishal Satyendra Desai ,  Pooya Monajemi ,  Santosh Babaji Kulkarni ,  Young Il Choi

IPC: H04W52/24 ,  H04W36/00 ,  H04W52/34 ,  H04W16/22

Abstract: Presented herein are techniques for using mobile client density to compensate for variations in path loss between neighboring access points. In one example, a device (e.g., wireless controller) determines one or more mobile client density variation trends in a wireless network location and determines one or more neighbor message power variation trends between at least first and second access points within the wireless network location over a time period. The device generates one or more correlation bias factors using the mobile client density variation trends and the neighbor message power variation trends over the time period. The device determines a path loss between at least the first and second access points based on the correlation bias factor and data associated with neighbor messages sent between the first and second access points.

公开(公告)号：US11510260B2

公开(公告)日：2022-11-22

申请号：US17001100

申请日：2020-08-24

Applicant: Cisco Technology, Inc.

Inventor： Pooya Monajemi ,  Brian Hart

IPC: H04W76/15 ,  H04W24/10 ,  H04L1/00 ,  H04B17/318 ,  H04B17/336

Abstract: A method is performed at a first multilink device configured to communicate wirelessly with a first radio and a second radio of a second multilink device. The method includes accessing a set of parameters for a known mathematical model that establishes a frequency separation to be imposed between transmission from the first radio and reception at the second radio in order to achieve a predetermined reception performance at the second radio when the transmission and the reception are simultaneous. The method further includes, using the known mathematical model, computing the frequency separation based on the set of parameters.

公开(公告)号：US11510191B2

公开(公告)日：2022-11-22

申请号：US16814836

申请日：2020-03-10

Applicant: Cisco Technology, Inc.

Inventor： Young Il Choi ,  Vishal S. Desai ,  Santosh B. Kulkarni ,  Pooya Monajemi

IPC: H04W72/04 ,  H04W28/16 ,  H04W72/08

Abstract: A network system comprises a plurality of access points (APs) and a distributed cache. The distributed cache is formed using memory in the plurality of APs. The plurality of APs are configured to measure telemetry data and store the telemetry data in the distributed cache. One of the plurality of APs is assigned as a controller AP configured to assign, based on the telemetry data stored in the distributed cache, multiple APs of the plurality of APs to different roles to analyze the plurality of APs and update resource configurations of the plurality of APs.

公开(公告)号：US11445463B2

公开(公告)日：2022-09-13

申请号：US16150947

申请日：2018-10-03

Applicant: Cisco Technology, Inc.

Inventor： Pooya Monajemi ,  Ahmadreza Hedayat ,  Allen J. Huotari ,  Jerome Henry

IPC: H04W60/06 ,  H04W84/12

Abstract: A wireless access point that serves one or more wireless client devices in a wireless network determines that at least one particular client device that is associated to the wireless access point should not be associated to the wireless access point. The wireless access point transmits frames so that they are received at the particular client device with reduced strength so as to provoke the particular client device to transition from the wireless access point.

公开(公告)号：US11412502B2

公开(公告)日：2022-08-09

申请号：US16810671

申请日：2020-03-05

Applicant: Cisco Technology, Inc.

Inventor： Pooya Monajemi ,  Matthew A. Silverman ,  Gautam D. Bhanage ,  Paul J. Stager ,  Fred J. Anderson

IPC: H04W72/04

Abstract: Techniques for efficient network probing are provided. Coherence data is received from a plurality of access points (APs), where the coherence data indicates, for each respective AP of the plurality of APs, coherence bandwidth for a plurality of subcarriers. A mapping is generated indicating, for each of the plurality of APs, sets of subcarriers that can be interchangeably sounded. Two or more APs of the plurality of APs that can jointly sound a first subcarrier of the plurality of subcarriers are then identified based on the mapping, and the first subcarrier is allocated to the identified two or more APs for future sounding.

公开(公告)号：US11303385B2

公开(公告)日：2022-04-12

申请号：US16748582

申请日：2020-01-21

Applicant: Cisco Technology, Inc.

Inventor： Benjamin Jacob Cizdziel ,  Brian Donald Hart ,  Pooya Monajemi ,  Vishal Satyendra Desai

IPC: H04L1/00 ,  H04L47/125 ,  H04W16/14 ,  H04L47/2441 ,  G01S7/02

Abstract: An access point in a wireless network communicates wirelessly with one or more client devices over a channel that includes a plurality of subchannels. Radar is detected on a first subchannel of the plurality of subchannels. It is determined to puncture the first subchannel, based on the detecting the radar on the first subchannel and based on one or more puncturing factors. The first subchannel is punctured, the puncturing comprising muting one or more subcarriers on the first subchannel.

公开(公告)号：US11297673B2

公开(公告)日：2022-04-05

申请号：US16812108

申请日：2020-03-06

Applicant: Cisco Technology, Inc.

Inventor： Pooya Monajemi ,  Santosh B. Kulkarni ,  Benjamin J. Cizdziel ,  Vishal S. Desai ,  Young Il Choi

IPC: H04W76/27 ,  H04W8/00 ,  H04W28/08 ,  H04W36/00 ,  H04W48/20 ,  H04W74/08 ,  H04W88/08 ,  H04B17/318

Abstract: Techniques are disclosed for determining, at a first wireless access point (AP), one or more radio resource management (RRM) input parameters. The one or more RRM input parameters are determined based on a line of sight (LOS) estimate between two wireless stations (STAs). A plurality of RRM values are generated based on the one or more RRM input parameters. A wireless connection is established between the first AP and a first STA using the RRM values.

公开(公告)号：US20220061044A1

公开(公告)日：2022-02-24

申请号：US17521327

申请日：2021-11-08

Applicant: Cisco Technology, Inc.

Inventor： Benjamin Jacob Cizdziel ,  Brian D. Hart ,  Pooya Monajemi ,  David Kloper

IPC: H04W72/04 ,  H04L5/00 ,  H04W72/08

Abstract: Bypassing radar in wide Dynamic Frequency Selection (DFS) channels utilizing puncturing may be provided. A first client device may be classified as eligible for puncturing and a second client device may be classified as not eligible for puncturing. Next, it may be determined that a subchannel in a bandwidth range should not be used. Then, in response to determining that the subchannel in the bandwidth range should not be used, the first client device may be steered to a first subset of the bandwidth range and the second client device may be steered to a second subset of the bandwidth range. The second subset of the bandwidth range may be smaller than the first subset of the bandwidth range.

公开(公告)号：US11197272B2

公开(公告)日：2021-12-07

申请号：US16726554

申请日：2019-12-24

Applicant: Cisco Technology, Inc.

Inventor： Pooya Monajemi ,  Vishal Satyendra Desai ,  Benjamin Jacob Cizdziel ,  Santosh Babaji Kulkarni ,  Young Il Choi

IPC: H04W4/00 ,  H04W72/04 ,  H04B17/318 ,  H04W48/16 ,  H04W84/12

Abstract: In dense Wireless Local Area Network (WLAN) deployments, Access Points (APs) in other Extended Service Sets (ESSs) can be hidden (a first AP does not receive signals from a third AP). However, these APs in other ESSs can still interfere with communications between the third AP and the devices communicating with the first AP. To improve service to that device in that situation, the first AP needs information about the third AP in the first AP's decision making processes. In these situations, a second AP, in contact with the third AP, can share information about the third AP with the first AP so that the first AP can avoid colliding with the third AP.

公开(公告)号：US20210258773A1

公开(公告)日：2021-08-19

申请号：US16985807

申请日：2020-08-05

Applicant: Cisco Technology, Inc.

Inventor： Jerome Henry ,  Andrew Frederick Myles ,  Pooya Monajemi

IPC: H04W12/00 ,  G01S19/21 ,  H04W56/00 ,  H04W76/11

Abstract: Presented herein are techniques for GPS attack prevention in association with wireless communication devices. In at least one embodiment, a method may include receiving, at a mobile device from a first access point (AP), first location information and one or more of a first token or first neighbor information relating to neighboring APs. The mobile device may receive from a second AP, second location information and one or more of a second token or second neighbor information relating to neighboring APs. The first token may be compared to the second token to determine whether the first and second tokens are consistent, and/or the first neighbor information may be compared to the second neighbor information to determine whether the first and second neighbor information are consistent. It may be determined whether the first location information provided by the first AP and the second location information provided by the second AP are valid based on the comparison(s).