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41.发明申请公开(公告)号：US20200288323A1
公开(公告)日：2020-09-10
申请号：US16293218
申请日：2019-03-05
Applicant: Cisco Technology, Inc.
Inventor： Matthew Aaron Silverman , Daniel Joseph Lyons , Pooya Monajemi , John Matthew Swartz
Abstract: In one illustrative example, a device configured for use in a wireless local area network (WLAN) may cause a spatial reuse (SR) adjustment to be performed based on data received from a multi-user receiver procedure for the blind detection and demodulation of colliding packets from multiple stations. This procedure may be performed by one or more access points (APs) and/or distributed sensor nodes, each having such a multi-user receiver. The procedure may involve receiving and decoding, over a channel, a first spatial stream from a first device of a first base service set (BSS) color; simultaneously receiving and decoding, over the channel, a second spatial stream from a second device of a second BSS color (i.e. an overlapping BSS or “OBSS”); and calculating a signal-to-interference ratio (SIR) based on signal levels associated with the streams. The SR adjustment may involve adjusting an OBSS Packet Detect (PD) (OBSS-PD) threshold.
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公开(公告)号：US20200287633A1
公开(公告)日：2020-09-10
申请号：US16292962
申请日：2019-03-05
Applicant: Cisco Technology, Inc.
IPC: H04B15/00 , H04B1/38 , H04B17/318
Abstract: An access point allocates resource units within a first channel to mitigate interference from an adjacent second channel. The access point obtains a measure of signal strength corresponding to each wireless device attached to an access point, and assigns, for each wireless device, resource units with a first frequency band of the first channel to mitigate interference with a second frequency band of a second channel adjacent to the first channel. An assignment between a set of resource units and a particular wireless device is based on the measure of signal strength corresponding to the particular wireless device. The access point communicates with the wireless devices on the resource units.
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公开(公告)号：US20200158810A1
公开(公告)日：2020-05-21
申请号：US16356662
申请日：2019-03-18
Applicant: Cisco Technology, Inc.
Inventor： Xu Zhang , Abhishek Mukherji , Huy Phuong Tran , Vinay S. Raghuram , Matthew Aaron Silverman
Abstract: Systems and methods provide for improving the accuracy of a location system. The location system can capture partial phase vector data from one or more access points (APs). The location system can capture associated data associated with the partial phase vector data across multiple dimensions, such as identity data of the APs and client devices generating the partial phase vector data and frequency band data, location data, a time and date, and other data associated with the partial phase vector data. The location system can determine correlation data across the multiple dimensions using the first partial phase vector data and the associated data. The location system can a cause of the partial phase vector data based on the correlation data. The location system can perform one or more remediation actions based on the cause of the partial phase vector data.
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公开(公告)号：US20200077425A1
公开(公告)日：2020-03-05
申请号：US16115506
申请日：2018-08-28
Applicant: Cisco Technology, Inc.
Inventor： Matthew Aaron Silverman , Qing Zhao , John T. Chapman , Dantong Liu
Abstract: Systems, methods, and computer-readable media for coordinating scheduling between a wireless scheduler and a backhaul scheduler to reduce uplink data transmission latency. In some examples, an uplink data prediction for uplink data to transmit over a wireless connection of a wireless network is identified by a wireless scheduler of a wireless network. The uplink data prediction can be provided to a backhaul scheduler of a backhaul of the wireless network. The wireless scheduler can be coordinated with the backhaul scheduler by the backhaul scheduler to coordinate transmission of the uplink data through the backhaul based on the uplink data prediction. The uplink data can then be received at the backhaul for transmission through the backhaul based on the uplink data prediction.
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公开(公告)号：US20190124672A1
公开(公告)日：2019-04-25
申请号：US15792624
申请日：2017-10-24
Applicant: Cisco Technology, Inc.
Inventor： Amir Hosein Kamalizad , Matthew Aaron Silverman
IPC: H04W72/12 , H04L25/02 , H04B17/336 , H04W72/08
Abstract: A method for transmitting a data transmission based on the classification of an interfering signal is described. The method comprises transmitting a first data transmission within a frequency band and detecting an interfering signal within the frequency band. The method comprises classifying the interfering signal as one of a plurality of interfering signal types. The method comprises transmitting, based on the classification, a second data transmission within the frequency band.
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Patent Agency Ranking
公开(公告)号：US20170118655A1
公开(公告)日：2017-04-27
申请号：US15043336
申请日：2016-02-12
Applicant: Cisco Technology, Inc.
Inventor： John Martin Blosco , Stephen Joseph McCarthy , Matthew Aaron Silverman , Erin Patrick McGough
CPC classification number: H04W16/28
Abstract: In one implementation, a device includes a first set of antennas having a first polarization; and a first radio coupled to the first set of antennas, the combination of the first set of antennas and the first radio supporting a first signal. The device also includes: a second set of antennas having a second polarization, the second polarization is different from the first polarization; and a second radio coupled to the second set of antennas, the combination of the second set of one or more antennas and the second radio supporting a second signal, the second signal is independent of the first signal. In some implementations, the first radio is operated according to a first power level in order to establish the first coverage area, and the second radio is operated according to a second power level in order to establish the second coverage area.
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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：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.
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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
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.
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50.发明授权公开(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
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.
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