公开(公告)号：US20220303790A1

公开(公告)日：2022-09-22

申请号：US17833811

申请日：2022-06-06

Applicant: Cisco Technology, Inc.

Inventor： Sivadeep Reddy Kalavakuru ,  Ardalan Alizadeh ,  John Martin Blosco ,  Matthew Aaron Silverman ,  Gautam D. Bhanage ,  John Matthew Swartz

IPC: H04W16/28 ,  H04W24/02 ,  H04B17/391 ,  H04W64/00

Abstract: Optimal determination of wireless antenna configurations may be provided. A computing device may direct an antenna array of an Access Point (AP) to generate a wide beamwidth, to locate a cluster of two or more stations. Upon locating the cluster, the AP can narrow the beamwidth, and, with the narrower beamwidth, receive a key performance indicator (KPI) from at least one of the two or more stations in the cluster. The computing device may then generate a statistical model, based on the KPI and an antenna vector of the antenna array. Based on the statistical model, the computing device can determine a second antenna vector to optimize the KPI for one or more of the client stations. The computing device can then modify the antenna state of the AP to generate the determined antenna vector.

公开(公告)号：US20220225325A1

公开(公告)日：2022-07-14

申请号：US17682049

申请日：2022-02-28

Applicant: Cisco Technology, Inc.

Inventor： Ardalan Alizadeh ,  Sivadeep Reddy Kalavakuru ,  Gautam D. Bhanage ,  John Matthew Swartz ,  Matthew Aaron Silverman

IPC: H04W72/04 ,  H04B7/06 ,  H04L43/0829 ,  H04B17/318

Abstract: Optimal determination of wireless network pathway configurations may be provided. A computing device may establish Multi-Access Point (AP) coordination between at least a first AP and a second AP. The first AP can determine an uplink operation is scheduled. When an uplink is scheduled, the first AP can switch its antenna to a narrow beamwidth. The first AP can then receive uplink transmissions from at least a client in the coverage area of the narrow beamwidth. After the uplink transmission, the first AP can then switch the antenna to a larger beamwidth for a next Multi-AP coordination operation.

公开(公告)号：US20220225205A1

公开(公告)日：2022-07-14

申请号：US17145218

申请日：2021-01-08

Applicant: Cisco Technology, Inc.

Inventor： Gautam D. Bhanage ,  Vishal Satyendra Desai ,  Ardalan Alizadeh ,  Khashayar Mirfakhraei

IPC: H04W40/16 ,  H04W76/30 ,  H04W80/02

Abstract: Optimal determination of wireless network pathway configurations may be provided. A computing device may detect, at a first network Access Point (AP), inference on a channel with a second AP. Then, the computing device can check availability of a redundant radio at the second AP. Based on the availability, the computing device can establish a new radio link with the redundant radio at the second AP and reroute data traffic over the new radio link to the second AP. After establishing the new radio link, the computing device can then sever the channel with the second AP.

公开(公告)号：US20220182119A1

公开(公告)日：2022-06-09

申请号：US17116975

申请日：2020-12-09

Applicant: Cisco Technology, Inc.

Inventor： Arunkumar Ravichandran ,  Pooya Monajemi ,  Ardalan Alizadeh

IPC: H04B7/06 ,  H04L5/00 ,  H04W76/15

Abstract: Out-of-link channel sounding using an out-of-band channel sounding link for multi-link devices (MLDs) in a wireless network may be provided. An Access Point (AP) may establish a first Wireless Communication Link (WCL) with a Multi-link Device (MLD). The AP may also establish a second WCL with the MLD. After establishing the first WCL, the AP may transmit a sounding trigger to the MLD on the first WCL. After transmission of the sounding trigger to the MLD on the first WCL, AP may transmit a Channel State Information (CSI) inquiry to the MLD on the second WCL. AP may receive a channel state quantification from the MLD on the second WCL in response to the CSI inquiry.

公开(公告)号：US11057831B2

公开(公告)日：2021-07-06

申请号：US16408546

申请日：2019-05-10

Applicant: Cisco Technology, inc.

Inventor： Khashayar Mirfakhraei ,  Amir Hosein Kamalizad ,  Xu Zhang ,  Ardalan Alizadeh ,  Vishal Satyendra Desai

IPC: H04W52/02 ,  H04W4/38 ,  H04L29/08

Abstract: In one embodiment, a supervisory service for a wireless network computes a compressive sensing schedule for a plurality of sensors in the wireless network. The service sends target wake time (TWT) messages to a subset of the plurality of sensors according to the computed compressive sensing schedule. The service receives, in response to the TWT messages, sensor readings from the subset of the plurality of sensors. The service performs compressive sensing on the received sensor readings.

公开(公告)号：US10965349B2

公开(公告)日：2021-03-30

申请号：US16559356

申请日：2019-09-03

Applicant: Cisco Technology, Inc.

Inventor： Matthew Aaron Silverman ,  Fred J. Anderson ,  Ardalan Alizadeh ,  Huaiyi Wang

IPC: H04B7/0417 ,  H04B7/06 ,  H04L5/00

Abstract: In one embodiment, a method includes identifying a number of configured proactive repetitions in downlink transmissions from the base station, selecting k antenna states for receiving repetitive downlink transmissions among the number of antenna states, where k equals the number of configured proactive repetitions, and where each of the k antenna states corresponds to each of the repetitive downlink transmissions, transmitting a CSI report for each of the k antenna states to the base station, where a CSI report for an antenna state is used by the base station to adjust configurations for the corresponding downlink transmission, receiving signals for each of the k repetitive downlink transmissions from the base station using each of the k antenna states, and decoding the downlink transmission based on k sets of received signals, each of the k sets being received using each of the k selected antenna states.

公开(公告)号：US20250093530A1

公开(公告)日：2025-03-20

申请号：US18467040

申请日：2023-09-14

Applicant: Cisco Technology, Inc.

Inventor： Ardalan Alizadeh ,  Navid Reyhanian ,  Audrey Yazdanparast ,  Peiman Amini ,  Jerome Henry

IPC: G01S19/48

Abstract: Described herein are devices, systems, methods, and processes for managing the computational complexity in geolocating a large number of network devices (e.g., access points (APs)) in indoor environments. A number of network devices may be partitioned into smaller groups or batches based on neighbor knowledge about the network devices. Each batch of network devices can include just devices located on a same floor, or may include devices located across different floors. Every batch may include at least one anchor network device. The geolocation of the network devices can be determined, batch-by-batch, based on fusing global navigation satellite system (GNSS) pseudorange measurements and inter-network device ranging measurements. The geolocation accuracy for each partition can be evaluated utilizing such metrics as the average residual error. If the error for a batch is greater than a threshold, remedial measures may be taken to reduce the error and improve the geolocation accuracy.

公开(公告)号：US20250085442A1

公开(公告)日：2025-03-13

申请号：US18466716

申请日：2023-09-13

Applicant: Cisco Technology, Inc.

Inventor： Jerome Henry ,  Peiman Amini ,  Ardalan Alizadeh ,  Niloo Bahadori

IPC: G01S19/50 ,  G01S19/30 ,  G01S19/48

Abstract: Devices, systems, methods, and processes for accurately determining a location of a device are described herein. The device may receive Global Navigation Satellite System (GNSS) data from two satellites in two time periods. The device can determine two pseudo range differences corresponding to the two satellites. The device may further determine two contours based on the two pseudo range differences. An overlap between the two contours may be utilized by the device to determine the location. The device can also determine the location of the device based on a contour and an estimated location. The device may utilize a Global Positioning System (GPS) database, an Access Points (AP) database, or one or more servers to retrieve the estimated location. The device can further configure an operating frequency and an output power based on the location in real-time.

公开(公告)号：US12212350B2

公开(公告)日：2025-01-28

申请号：US17822811

申请日：2022-08-29

Applicant: Cisco Technology, Inc.

Inventor： Sivadeep Reddy Kalavakuru ,  Ardalan Alizadeh ,  John Martin Blosco ,  Peiman Amini ,  Clark Carty

IPC: H04B1/036 ,  H04W52/20 ,  H04W52/30

Abstract: Improved Radio Frequency (RF) performance by optimizing temperature may be provided. A plurality of heatmaps may be created associating a plurality of component heat characteristics, of a plurality of components of a device, with a plurality of pre-defined performance trade-off states. Next, a shortest path through the plurality of pre-defined performance trade-off states may be determined. The device may then be placed in successive ones of the plurality of pre-defined performance trade-off states according to the determined shortest path until a Transmit (TX) performance target is met.

公开(公告)号：US20240380535A1

公开(公告)日：2024-11-14

申请号：US18459544

申请日：2023-09-01

Applicant: Cisco Technology, Inc.

Inventor： Matthew A. Silverman ,  Sivadeep Reddy Kalavakuru ,  Ardalan Alizadeh

IPC: H04L5/00

Abstract: Physical Layer Protocol Data Units (PPDUs) with an extension and specifically PPDUs with an extension for Ambient Power (AMP) Backscatter Device (BKD) excitation may be provided. A PPDU with an AMP BKD excitation extension can include an AMP BKD excitation extension field indicating the version and duration of the AMP BKD excitation extension. A method for providing the PPDU with the AMP BKD excitation extension includes generating the PPDU with the AMP BKD excitation extension and the AMP BKD excitation extension field and transmitting the PPDU with the AMP BKD excitation extension.