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公开(公告)号：US12267101B2
公开(公告)日：2025-04-01
申请号：US18301511
申请日：2023-04-17
Applicant: Cisco Technology, Inc.
Inventor： Matthew Aaron Silverman , Robert E. Barton , Brian D. Hart , Jerome Henry , Ardalan Alizadeh , Vishal S. Desai , John Matthew Swartz
IPC: H04B1/7183 , H04W84/12
Abstract: Access Point ranging and placement on a floorplan may be provided. A host AP may range each neighbor AP of the host AP. One or more neighbor APs that failed ranging with the host AP may be categorized in a failed neighbor AP list. The host AP may re-range each of the one or more neighbor APs in the failed neighbor AP list with a modified ranging parameter. At least one neighbor AP of the one or more neighbor APs may be categorized in the failed neighbor AP list that succeeded in re-ranging with the host AP in an extended range neighbor AP list.
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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.
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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
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.
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74.发明授权公开(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
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.
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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.
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Patent Agency Ranking
公开(公告)号：US20240380249A1
公开(公告)日：2024-11-14
申请号：US18487056
申请日：2023-10-14
Applicant: Cisco Technology, Inc.
Inventor： Matthew A. Silverman , Sivadeep Reddy Kalavakuru , Jerome Henry , Ardalan Alizadeh
Abstract: Coordinated customization of harvesting conditions to ambient power devices may be provided. receive Radio Frequency (RF) characteristics associated with a backscatter communication device may be received. Based on the RF characteristics and a Received Signal Strength Indicator (RSSI) from the backscatter communication device, it may be determined that the computing device has an ability to charge the backscatter communication device to at least meet a predetermined energy need of the backscatter communication device. Next, in response to determining that the computing device has the ability to charge the backscatter communication device, charging of the backscatter communication device to at least meet the predetermined energy need of the backscatter communication device may be scheduled.
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公开(公告)号：US12136959B2
公开(公告)日：2024-11-05
申请号：US18191553
申请日：2023-03-28
Applicant: Cisco Technology, Inc.
Inventor： Sivadeep Kalavakuru , Fred Anderson , Xiangxiang Fang , Ardalan Alizadeh
Abstract: Real-time radio self-calibration may be provided. The self-calibration may begin by sampling a Transmission (TX) signal. An achievable Error Vector Magnitude (EVM) for one or more frames may be determined based on the TX signal. Link budgets for clients may be determined using a TX power and a supported Modulation and Coding Scheme (MCS). A per packet TX power is adjusted based on the achievable EVM and a TX retry rate. The PA linearity of the radio may also be adjusted based on the achievable EVM and the link budget. The client may be regrouped into a new MCS based on the link budget.
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公开(公告)号：US20240314554A1
公开(公告)日：2024-09-19
申请号：US18122942
申请日：2023-03-17
Applicant: Cisco Technology, Inc.
Inventor： Vishal Satyendra Desai , Shayne Miel , Ardalan Alizadeh
Abstract: This disclosure describes techniques for using an anchored endpoint to enhance MFA authentication of a client device. A method performed at least in part by a security service includes authenticating of a client device connecting to a secure resource. The method also includes determining a first Wi-Fi fingerprint of the client device, determining that the client device is within a threshold proximity to an anchor device, and determining a second Wi-Fi fingerprint of the anchor device. The method also includes detecting a change to the first Wi-Fi fingerprint of the client device and determining that the second Wi-Fi fingerprint of the anchor device has not changed. The method also includes determining whether the client device is within the threshold proximity of the anchor device, if it is, access to the secured resource continues to be allowed, if it is not, a reauthentication of the client device is triggered.
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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.
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公开(公告)号：US20240205873A1
公开(公告)日：2024-06-20
申请号：US18068378
申请日：2022-12-19
Applicant: Cisco Technology, Inc.
Inventor： Peiman Amini , Ardalan Alizadeh , Bahador Amiri
CPC classification number: H04W64/003 , G01S5/0081 , G01S5/02213
Abstract: Disclosed are systems, apparatuses, methods, and computer-readable media for identifying a locations of a network entities within a network. A method for identifying a location of an (AP) includes receiving a first location measurement associated with a first measurement variant and a second location measurement associated with a second measurement variant from a first AP; receiving a third location measurement associated with the first measurement variant and a fourth location measurement associated with the second measurement variant from a second AP; determining weights associated with the location measurements; determining a first location associated with the first AP and a second location associated with the second AP based on a first weight, a second weight, a third weight, and a fourth weight; determining a confidence of the first location based on a comparison of the first location measurement and the second location measurement.
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