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公开(公告)号：US11835636B2
公开(公告)日：2023-12-05
申请号：US16871967
申请日：2020-05-11
Applicant: Cisco Technology, Inc.
Inventor： Danielle N. Bane , Jonathan M. Cyphert , Sivadeep R. Kalavakuru , Ashish Pasha Sheikh , Matthew A. Silverman
Abstract: The present disclosure provides a dual mode antenna, comprising: a first conductive piece; and a second conductive piece, configured to electromagnetically couple with the first conductive piece through a dielectric at a second frequency to operate as a loop antenna with the first conductive piece and configured to operate independently of the first conductive piece at a first frequency to operate as a monopole antenna. The dual mode antenna can be included in an antenna array as one of a plurality of dual mode antennas coupled to a routing substrate or a reference dual mode antenna coupled to the routing substrate along with a plurality of single mode antennas coupled to the routing substrate; wherein each antenna of the plurality of dual mode antennas, the reference dual mode antenna, and the plurality of single mode antennas is arranged evenly relative to a first neighboring antenna and a second neighboring antenna.
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公开(公告)号：US11616609B2
公开(公告)日：2023-03-28
申请号：US17302805
申请日：2021-05-12
Applicant: Cisco Technology, Inc.
Inventor： Sivadeep R. Kalavakuru , Ardalan Alizadeh
Abstract: Embodiments herein describe assigning different linearity operating points of a front end of a radio to groups of user devices when transmitting data using OFDMA. That is, when transmitting a PPDU to a first group of user devices, an access point (AP) may set the front end of the radio to a lower linearity operating point than when transmitting a PPDU to a second group of user devices. Using a higher linearity operating point can increase the data rate used to transmit the PPDU—e.g., the AP can use a higher modulation coding scheme (MCS). This can reduce the time the PPDUs have to wait in a queue before being transmitted.
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公开(公告)号：US11622355B2
公开(公告)日：2023-04-04
申请号：US17301176
申请日：2021-03-29
Applicant: Cisco Technology, Inc.
Inventor： Ardalan Alizadeh , Gautam D. Bhanage , Khashayar Mirfakhraei , Matthew A. Silverman , Sivadeep R. Kalavakuru
IPC: H04W84/12 , H04W72/044 , H04W72/0453
Abstract: A method includes instructing, by a WiFi access node, a first device to communicate using an uplink frequency band with a first uplink power. The method also includes instructing, by the WiFi access node, a second device to communicate using the uplink frequency band with a second uplink power different from the first uplink power.
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公开(公告)号：US20210349170A1
公开(公告)日：2021-11-11
申请号：US16871967
申请日：2020-05-11
Applicant: Cisco Technology, Inc.
Inventor： Danielle N. Bane , Jonathan M. Cyphert , Sivadeep R. Kalavakuru , Ashish Pasha Sheikh , Matthew A. Silverman
Abstract: The present disclosure provides a dual mode antenna, comprising: a first conductive piece; and a second conductive piece, configured to electromagnetically couple with the first conductive piece through a dielectric at a second frequency to operate as a loop antenna with the first conductive piece and configured to operate independently of the first conductive piece at a first frequency to operate as a monopole antenna. The dual mode antenna can be included in an antenna array as one of a plurality of dual mode antennas coupled to a routing substrate or a reference dual mode antenna coupled to the routing substrate along with a plurality of single mode antennas coupled to the routing substrate; wherein each antenna of the plurality of dual mode antennas, the reference dual mode antenna, and the plurality of single mode antennas is arranged evenly relative to a first neighboring antenna and a second neighboring antenna.
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公开(公告)号：US20240380459A1
公开(公告)日：2024-11-14
申请号：US18459564
申请日：2023-09-01
Applicant: Cisco Technology, Inc.
Inventor： Ardalan Alizadeh , Navid Reyhanian , Sivadeep R. Kalavakuru , Matthew A. Silverman , Peiman Amini
IPC: H04B7/06 , H04B7/0456
Abstract: Enhancing Multi-Access Point (AP) Coordination (MAPC) null-steering may be provided. Enhancing null-steering may include sending a coordination request for MAPC. A coordination response may be received from one or more APs. A Channel State Information (CSI) request may then be sent. CSI of one or more clients associated with the one or more APs may be received. Next, one or more precoder and decoder matrices may be determined based on the CSI of the one or more clients. The one or more precoder matrices may be sent to the one or more APs, and the one or more decoder matrices may be sent to the one or more clients. A transmission may be sent to a first client using null-steering and interference alignment based on the one or more precoder matrices, wherein the transmitting is synchronized with transmissions by the one or more APs to the one or more clients.
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Patent Agency Ranking
公开(公告)号：US20240172163A1
公开(公告)日：2024-05-23
申请号：US17989313
申请日：2022-11-17
Applicant: Cisco Technology, Inc.
CPC classification number: H04W64/00 , H04L1/1607
Abstract: In some aspects, the techniques described herein relate to a method including: determining a series of predetermined phases for wireless signals to be used in location calculations for a station device accessing a wireless access point; reflecting wireless signals from the wireless access point off of an intelligent reflecting surface to the station device; and controlling the intelligent reflecting surface such that a series of the wireless signals are reflected off of the intelligent reflecting surface with the predetermined phases.
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公开(公告)号：US11832197B2
公开(公告)日：2023-11-28
申请号：US17305032
申请日：2021-06-29
Applicant: Cisco Technology, Inc.
Inventor： Gautam D. Bhanage , Matthew A. Silverman , Sivadeep R. Kalavakuru , Ardalan Alizadeh
CPC classification number: H04W56/001 , H04W8/005 , H04W16/14 , H04W56/0065 , H04W72/1215
Abstract: Techniques for neighborhood management between WiFi and unlicensed spectrum radios. A wireless access point (AP), including a first radio, identifies a neighboring second radio operating using at least a portion of an unlicensed radio spectrum, based on a time that the AP receives a transmission from the second radio using a frequency within the unlicensed radio spectrum. Transmission between the first radio and the second radio is synchronized by identifying a clock offset between a first clock relating to the first radio and a second clock relating to the second radio.
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公开(公告)号：US11728911B2
公开(公告)日：2023-08-15
申请号：US17301180
申请日：2021-03-29
Applicant: Cisco Technology, Inc.
Inventor： Sivadeep R. Kalavakuru , Ardalan Alizadeh , Matthew A. Silverman , Gautam D. Bhanage
IPC: H04B17/318 , H04B17/10
CPC classification number: H04B17/318 , H04B17/102
Abstract: Techniques for identifying an orientation for an antenna in a wireless communication device. A plurality of estimates of antenna gain are determined for an antenna associated with a wireless access point (AP), the plurality of estimates of antenna gain relating to a plurality of wireless stations (STAs) associated with the AP. An orientation for the antenna is determined based on the plurality of estimates of antenna gain and a plurality of properties for the antenna.
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公开(公告)号：US11659445B2
公开(公告)日：2023-05-23
申请号：US17443596
申请日：2021-07-27
Applicant: Cisco Technology, Inc.
Inventor： Ardalan Alizadeh , Gautam D. Bhanage , Sivadeep R. Kalavakuru , Pooya Monajemi , Matthew A. Silverman
CPC classification number: H04W28/0975 , H04W28/0804 , H04W28/0835 , H04W28/0908 , H04W28/16
Abstract: Techniques for distributed computation are provided. A plurality of edge computing devices available to execute a computing task for a client device is identified, and a first latency of transmitting data among the plurality of edge computing devices is determined. A second latency of transmitting data from the client device to the plurality of edge computing devices is determined, and a set of edge computing devices, from the plurality of edge computing devices, is determined to execute the computing task based at least in part on the first and second latencies. Execution of the computing task is facilitated using the set of edge computing devices, where the client device transmits a portion of the computing task directly to each edge computing device of the set of edge computing devices.
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公开(公告)号：US11644525B2
公开(公告)日：2023-05-09
申请号：US17089119
申请日：2020-11-04
Applicant: Cisco Technology, Inc.
Inventor： Matthew Aaron Silverman , Jerome Henry , Robert Edgar Barton , Sivadeep R. Kalavakuru
IPC: G01S5/02 , H04B17/318 , H04W4/80 , G01S5/00
CPC classification number: G01S5/0249 , G01S5/0036 , G01S5/0244 , H04B17/318 , H04W4/80
Abstract: A location server collects from access points at known locations in a venue, which is represented by grid locations defined by parameters accessible to the location server, (i) ultra wideband (UWB) location measurements for a UWB location technology based on UWB transmissions from mobile devices in the venue, and (ii) non-UWB location measurements for non-UWB location technologies based on non-UWB transmissions from the mobile devices. The location server associates the non-UWB location measurements for the non-UWB location technologies with the grid locations, using the UWB location measurements as reference measurements. The location server populates location calibration records for the grid locations of the venue with the non-UWB location measurements associated with the grid locations. The location server calibrates the non-UWB location technologies at the grid locations based on the non-UWB location measurements in the location calibration records associated with the grid locations.
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