公开(公告)号：US20230076697A1

公开(公告)日：2023-03-09

申请号：US17447175

申请日：2021-09-08

Applicant: Cisco Technology, Inc.

Inventor： Matthew A. SILVERMAN ,  Mahesh DAISY ,  Jerome HENRY ,  Vishal S. DESAI

IPC: H04W48/20 ,  H04W76/15

Abstract: Various embodiments herein disclose coordinating frequencies for an access point (AP). A corresponding method comprises evaluating a performance profile for the AP, the performance profile comprising a first part related to a first network generated by a first radio of the AP and a second part related to a second network generated by a second radio of the AP. The method also comprises selecting first channels on which the AP generates the first network based on the performance profile and spectral regrowth profiles for transmission power levels of the first radio. The method additionally comprises selecting second channels on which the AP generates the second network based at least in part on the performance profile and the spectral regrowth profiles. Furthermore, the method comprises enabling communications between a first set of devices on the first channels and enabling communications between a second set of devices on the second channels.

公开(公告)号：US20230034758A1

公开(公告)日：2023-02-02

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

IPC: H04W28/08 ,  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.

公开(公告)号：US20230007976A1

公开(公告)日：2023-01-12

申请号：US17368676

申请日：2021-07-06

Applicant: Cisco Technology, Inc.

Inventor： Akram I. SHERIFF ,  Jerome HENRY ,  Robert E. BARTON ,  Matthew A. SILVERMAN

IPC: H04W64/00 ,  G01S11/06 ,  H04W4/02 ,  H04W24/10

Abstract: A method includes estimating distances between a user device and an access point based on a series of FTM ranging bursts exchanged between the user device and the access point. The method also includes calculating a variance of the estimated distances and in response to determining that the variance exceeds a threshold, instructing the user device to perform an action that reduces the variance. Other embodiments include a device that performs this method.

公开(公告)号：US20220311524A1

公开(公告)日：2022-09-29

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

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.

公开(公告)号：US20220200558A1

公开(公告)日：2022-06-23

申请号：US17654717

申请日：2022-03-14

Applicant: Cisco Technology, Inc.

Inventor： Matthew A. SILVERMAN ,  Evgeny YANKEVICH ,  John M. SWARTZ

IPC: H03G3/30 ,  H03G3/00 ,  H04W28/02 ,  H04B1/10

Abstract: Dynamic automatic gain controller configuration in multiple input and multiple output receivers is provided by monitoring a given section of wireless spectrum for higher-priority signals using a first antenna set associated with a first Automatic Gain Controller (AGC) set while concurrently monitoring the given section of wireless spectrum for wireless packet-based traffic using a second antenna set associated with a second AGC set; in response to detecting a packet via the second antenna set: re-associating the first antenna set and the second antenna set to a third AGC set; receiving the packet via the first antenna set and the second antenna set using the third AGC set; and in response to the packet being received, re-associating the first antenna set to the first AGC set and the second antenna set to the second AGC set.

公开(公告)号：US20210351879A1

公开(公告)日：2021-11-11

申请号：US16869311

申请日：2020-05-07

Applicant: Cisco Technology, Inc.

Inventor： Huaiyi WANG ,  Brian D. HART ,  Matthew A. SILVERMAN ,  Zhigang GAO

IPC: H04L1/20 ,  H04L1/00

Abstract: Aspects described herein include a method comprising predicting, based on one or more transmission characteristics, error values for a sequence of bit positions used for modulating data within a packet. The method further comprises generating a bitmap that maps one or more payload bits and one or more padding bits of the packet to respective bit positions of the sequence. The one or more padding bits are preferentially mapped to respective bit positions having relatively greater error values. The method further comprises modulating the sequence according to the bitmap.

公开(公告)号：US20210282132A1

公开(公告)日：2021-09-09

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：US20210160198A1

公开(公告)日：2021-05-27

申请号：US16698573

申请日：2019-11-27

Applicant: Cisco Technology, Inc.

Inventor： Santosh B. KULKARNI ,  Vishal S. DESAI ,  Pooya MONAJEMI ,  Young Il CHOI ,  Matthew A. SILVERMAN

IPC: H04L12/861 ,  H04L12/26 ,  H04L29/06 ,  G06F12/084 ,  G06F12/0864

Abstract: Embodiments herein describe a group of APs that uses a shared radar cache to select a new channel after vacating a current channel when performing dynamic frequency selection (DFS). The group of APs can set aside memory to store status information about the DFS channels in the frequency band. For example, when one AP detects a radar event (and has to vacate a DFS channel), the AP updates an entry for that channel in the shared radar cache. The APs can also query the cache to determine a new channel after vacating its current channel. That is, the shared radar cache may store the most recent radar events occurring in a channel. In this manner, the APs can select a new channel that has little or no recent radar events, which reduces the likelihood the AP will have to vacate the new channel.

公开(公告)号：US20180294898A1

公开(公告)日：2018-10-11

申请号：US15480197

申请日：2017-04-05

Applicant: Cisco Technology, Inc.

Inventor： Mithat C. DOGAN ,  Jiunming HUANG ,  Brian D. HART ,  Matthew A. SILVERMAN

IPC: H04B17/12 ,  H04L25/02 ,  H01Q3/26 ,  H04B7/0417 ,  H04B7/06 ,  H04B7/024

CPC classification number: H04B17/12 ,  H01Q3/26 ,  H04B7/024 ,  H04B7/0417 ,  H04B7/0626 ,  H04B17/14 ,  H04B17/21 ,  H04L5/14 ,  H04L25/0248

Abstract: Embodiments herein describe calibrating a plurality of radio heads having a plurality of wireless antennas. In one embodiment, the plurality of radio heads communicate a calibration signal in a round robin fashion such that each of the radio heads communicates a respective calibration signal to the remaining radio heads. The received calibration signals are then used to calibrate the radio heads. In one embodiment, a controller coupled with the plurality of radio heads calibrates the radio heads. The calibrated radio heads then communicate to one or more client devices.

公开(公告)号：US20240381430A1

公开(公告)日：2024-11-14

申请号：US18452471

申请日：2023-08-18

Applicant: Cisco Technology, Inc.

Inventor： Malcolm M. SMITH ,  Brian D. HART ,  Matthew A. SILVERMAN ,  Robert E. BARTON

IPC: H04W74/08

Abstract: A signaling mechanism is provided that includes a restricted random access resource unit (XRA RU) that restricts uplink random access, such as by using Uplink Orthogonal frequency-division multiple access-based Random Access (UORA), to a subset of a plurality of stations that are associated with an Access Point (AP). In one aspect, an AP allocates a resource unit as an XRA RU that restricts uplink random access to a subset of a plurality of stations (STAs) that are associated with the AP. The AP transmits an uplink trigger that includes the XRA RU. The AP restricts use of the XRA RU to the subset of the plurality of STAs. In this way, STAs of the subset can attempt contention-based random access with the XRA RU while other STAs are prevented from attempting random access with the XRA RU.