Patents by Inventor Pooya Monajemi

Pooya Monajemi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11153760
    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.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: October 19, 2021
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Matthew Aaron Silverman, Daniel Joseph Lyons, Pooya Monajemi, John Matthew Swartz
  • Patent number: 11153761
    Abstract: Spectrum management may be provided. A first Radio Frequency (RF) event metric may be received from a first service end point. The first RF event metric may comprise a time a first event occurred. A second RF event metric may be received from a second service end point. The second RF event metric may comprise a time a second event occurred. Then it may be determined that the time the first event occurred and the time the second event occurred are substantially congruent. Next, in response to determining that the time the first event occurred and the time the second event occurred are substantially congruent, the first service end point and the second service end point may be grouped in a first RF group thereby allowing frequency re-use across similar RF groups. Then different channels may be assigned to the first service end point and the second service end point.
    Type: Grant
    Filed: January 7, 2020
    Date of Patent: October 19, 2021
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Santosh Babaji Kulkarni, Vishal Satyendra Desai, Pooya Monajemi, Young Il Choi
  • Publication number: 20210321283
    Abstract: Networked sleep mode management is provided by measuring network conditions for a first Access Point (AP) serving a plurality of Client Devices (CDs) configured to operate in one of a sleep mode and an active mode; in response to detecting, based on the measured network conditions, an amount of network usage devoted to transitioning members of the plurality of CDs from the sleep mode to the active mode satisfies a threshold: identifying a first subset of CDs from the plurality of CDs that are deprioritized for access to the sleep mode; receiving a sleep request from a given CD that is a member of the first subset of CDs; and denying the sleep request to force the given CD to maintain the active mode for at least a predefined amount of time.
    Type: Application
    Filed: June 23, 2021
    Publication date: October 14, 2021
    Inventors: Pooya MONAJEMI, Vishal S. DESAI, Santosh B. KULKARNI
  • Publication number: 20210321473
    Abstract: A method is performed at a first multilink device configured to communicate wirelessly with a first radio and a second radio of a second multilink device. The method includes accessing a set of parameters for a known mathematical model that establishes a frequency separation to be imposed between transmission from the first radio and reception at the second radio in order to achieve a predetermined reception performance at the second radio when the transmission and the reception are simultaneous. The method further includes, using the known mathematical model, computing the frequency separation based on the set of parameters.
    Type: Application
    Filed: August 24, 2020
    Publication date: October 14, 2021
    Inventors: Pooya Monajemi, Brian Hart
  • Publication number: 20210297164
    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.
    Type: Application
    Filed: June 8, 2021
    Publication date: September 23, 2021
    Inventors: Matthew Aaron Silverman, Pooya Monajemi, Vishal Satyendra Desai, John Martin Blosco
  • Publication number: 20210289493
    Abstract: A network system comprises a plurality of access points (APs) and a distributed cache. The distributed cache is formed using memory in the plurality of APs. The plurality of APs are configured to measure telemetry data and store the telemetry data in the distributed cache. One of the plurality of APs is assigned as a controller AP configured to assign, based on the telemetry data stored in the distributed cache, multiple APs of the plurality of APs to different roles to analyze the plurality of APs and update resource configurations of the plurality of APs.
    Type: Application
    Filed: March 10, 2020
    Publication date: September 16, 2021
    Inventors: Young Il CHOI, Vishal S. DESAI, Santosh B. KULKARNI, Pooya MONAJEMI
  • Publication number: 20210282132
    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.
    Type: Application
    Filed: March 5, 2020
    Publication date: September 9, 2021
    Inventors: Pooya MONAJEMI, Matthew A. SILVERMAN, Gautam D. BHANAGE, Paul J. STAGER, Fred J. ANDERSON
  • Publication number: 20210282214
    Abstract: Techniques are disclosed for determining, at a first wireless access point (AP), one or more radio resource management (RRM) input parameters. The one or more RRM input parameters are determined based on a line of sight (LOS) estimate between two wireless stations (STAs). A plurality of RRM values are generated based on the one or more RRM input parameters. A wireless connection is established between the first AP and a first STA using the RRM values.
    Type: Application
    Filed: March 6, 2020
    Publication date: September 9, 2021
    Inventors: Pooya MONAJEMI, Santosh B. KULKARNI, Benjamin J. CIZDZIEL, Vishal S. DESAI, Young Il CHOI
  • Publication number: 20210266137
    Abstract: A wireless access point device is full-duplex capable and serves wireless communication for at least first and second wireless client devices. The wireless access point device sends to the first wireless client device a trigger frame that causes the first wireless client device to send an uplink transmission to the wireless access point after a first time interval. The wireless access point device waits a second time interval after the first wireless client is expected to begin sending the uplink transmission. The wireless access point device receives the uplink transmission from the first wireless client device. After the second time interval, and while receiving the uplink transmission from the first wireless client device, the wireless access point device sends to the second wireless client device a downlink transmission that overlaps at least partially in frequency and time with the uplink transmission from the first wireless client device.
    Type: Application
    Filed: February 26, 2020
    Publication date: August 26, 2021
    Inventors: Pooya Monajemi, Brian Hart, Matthew Aaron Silverman, Gautam D. Bhanage
  • Publication number: 20210258773
    Abstract: Presented herein are techniques for GPS attack prevention in association with wireless communication devices. In at least one embodiment, a method may include receiving, at a mobile device from a first access point (AP), first location information and one or more of a first token or first neighbor information relating to neighboring APs. The mobile device may receive from a second AP, second location information and one or more of a second token or second neighbor information relating to neighboring APs. The first token may be compared to the second token to determine whether the first and second tokens are consistent, and/or the first neighbor information may be compared to the second neighbor information to determine whether the first and second neighbor information are consistent. It may be determined whether the first location information provided by the first AP and the second location information provided by the second AP are valid based on the comparison(s).
    Type: Application
    Filed: August 5, 2020
    Publication date: August 19, 2021
    Inventors: Jerome Henry, Andrew Frederick Myles, Pooya Monajemi
  • Patent number: 11089501
    Abstract: Networked sleep mode management is provided by measuring network conditions for a first Access Point serving a plurality of client devices configured to operate in one of a sleep mode and an active mode; in response to detecting an amount of network usage devoted to transitioning members of the plurality of client devices from the sleep mode to the active mode satisfies a threshold: identifying a first subset of client devices from the plurality of client devices that are in the sleep mode; identifying a given client device from the first subset of client devices to transition to the active mode; and transmitting a tear-down message to the given client device that instructs the given client device to transition from the sleep mode to the active mode.
    Type: Grant
    Filed: January 23, 2020
    Date of Patent: August 10, 2021
    Assignee: Cisco Technology, Inc.
    Inventors: Pooya Monajemi, Vishal S. Desai, Santosh B. Kulkarni
  • Publication number: 20210235310
    Abstract: Networked sleep mode management is provided by measuring network conditions for a first Access Point serving a plurality of client devices configured to operate in one of a sleep mode and an active mode; in response to detecting an amount of network usage devoted to transitioning members of the plurality of client devices from the sleep mode to the active mode satisfies a threshold: identifying a first subset of client devices from the plurality of client devices that are in the sleep mode; identifying a given client device from the first subset of client devices to transition to the active mode; and transmitting a tear-down message to the given client device that instructs the given client device to transition from the sleep mode to the active mode.
    Type: Application
    Filed: January 23, 2020
    Publication date: July 29, 2021
    Inventors: Pooya MONAJEMI, Vishal S. DESAI, Santosh B. KULKARNI
  • Publication number: 20210235325
    Abstract: Systems and methods herein can analyze a bandwidth restriction in a communication stream of an Access Point (AP). Then, based on the bandwidth restriction, the AP can determine a lower amount of wireless bandwidth to provide to station wireless communicating to the AP. The AP can then modify a bandwidth allocation assigned to the station based on the lower amount of wireless bandwidth.
    Type: Application
    Filed: January 24, 2020
    Publication date: July 29, 2021
    Applicant: Cisco Technology, Inc.
    Inventors: Vishal Satyendra Desai, Benjamin Jacob Cizdziel, Pooya Monajemi, Young Il Choi, Santosh Babaji Kulkarni
  • Publication number: 20210227489
    Abstract: A system may be configured to identify from among a plurality of access points in an area in communication with a network, a first access point associated with the area. In addition the system may also be configured to determine first location-related data for the first access point. Determining second location-related data for a second access point of the plurality of access points, the second access point being interior to the first access point within the network includes exchanging ranging data indicative of a first relative distance between the first access point and the second access point, the ranging data based at least in part on ranging message exchange measurements, and communicating the first location-related data from the first access point to the second access point.
    Type: Application
    Filed: December 14, 2020
    Publication date: July 22, 2021
    Inventors: Jerome Henry, Pooya Monajemi, Santosh Ghanshyam Pandey, Jean-Philippe Marcel Vasseur
  • Patent number: 11063675
    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.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: July 13, 2021
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Matthew Aaron Silverman, Pooya Monajemi, Vishal Satyendra Desai, John Martin Blosco
  • Publication number: 20210211885
    Abstract: Spectrum management for coexistence of heterogeneous wireless technologies may be provided. A first Radio Frequency (RF) event metric may be received from a first service end point. The first RF event metric may comprise a time a first event occurred. A second RF event metric may be received from a second service end point. The second RF event metric may comprise a time a second event occurred. Then it may be determined that the time the first event occurred and the time the second event occurred are substantially congruent. Next, in response to determining that the time the first event occurred and the time the second event occurred are substantially congruent, the first service end point and the second service end point may be grouped in a first RF group thereby allowing frequency re-use across similar RF groups. Then different channels may be assigned to the first service end point and the second service end point.
    Type: Application
    Filed: January 7, 2020
    Publication date: July 8, 2021
    Applicant: Cisco Technology, Inc.
    Inventors: Santosh Babaji Kulkarni, Vishal Satyendra Desai, Pooya Monajemi, Young Il Choi
  • Publication number: 20210195562
    Abstract: In dense Wireless Local Area Network (WLAN) deployments, Access Points (APs) in other Extended Service Sets (ESSs) can be hidden (a first AP does not receive signals from a third AP). However, these APs in other ESSs can still interfere with communications between the third AP and the devices communicating with the first AP. To improve service to that device in that situation, the first AP needs information about the third AP in the first AP's decision making processes. In these situations, a second AP, in contact with the third AP, can share information about the third AP with the first AP so that the first AP can avoid colliding with the third AP.
    Type: Application
    Filed: December 24, 2019
    Publication date: June 24, 2021
    Applicant: Cisco Technology, Inc.
    Inventors: Pooya Monajemi, Vishal Satyendra Desai, Benjamin Jacob Cizdziel, Santosh Babaji Kulkarni, Young Il Choi
  • Publication number: 20210160198
    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.
    Type: Application
    Filed: November 27, 2019
    Publication date: May 27, 2021
    Inventors: Santosh B. KULKARNI, Vishal S. DESAI, Pooya MONAJEMI, Young Il CHOI, Matthew A. SILVERMAN
  • Publication number: 20210144565
    Abstract: Aspects described herein include an exclusionary approach for basic service set (BSS) color selection and assignment in a network. A network controller for a network selects a radio associated with an access point (AP) under management of the network controller and determines a potential set of BSS colors for the radio. The network controller then removes/excludes a set of BSS colors that impacts the radio from the potential set of BSS colors and updates or assigns a BSS color for the selected radio using the potential set of BSS colors, minimizing the chances that the assigned BSS color will cause an overlapping BSS color condition in the network.
    Type: Application
    Filed: May 29, 2020
    Publication date: May 13, 2021
    Inventors: Benjamin J. CIZDZIEL, Pooya MONAJEMI, Vishal S. DESAI, Santosh B. KULKARNI
  • Patent number: 11006430
    Abstract: Techniques for a machine learning event-driven radio resource management (ED-RRM) module which provides analysis of interference events in a network system are described. The network system reacts to the detection of interference in a network system and uses multiple input parameters to determine a type of device creating the interference, a predicted duration of the interference, and an ED-RRM decision on whether to activate the radio resource management (RRM) processes to alter the network transmission or block the RRM processes to conserve system resources for the network system.
    Type: Grant
    Filed: April 4, 2019
    Date of Patent: May 11, 2021
    Assignee: Cisco Technology, Inc.
    Inventors: Pooya Monajemi, Vishal S. Desai, Santosh Babaji Kulkarni, Young Il Choi