Patents by Inventor Ozgur Gurbuz

Ozgur Gurbuz 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).

  • Publication number: 20240028670
    Abstract: An application-based traffic classification method for ensuring quality-of-service requirements for at least one network comprises at least one preprocessing-related step, a data classification-related step, and a learning-related step; the preprocessing-related step includes at least a windowing and sampling substep, a sub step of generating a classification dataset with labels, and a sub step of Lloyd-Max quantization, whereby an input stream is modeled as a discrete time Markov chain; the learning-related step includes at least one substep of training at least one classifier selected from a group including a classifier for a mixture of Markov components, a classifier for a k-nearest Markov component, and a classifier for a k-nearest Markov parameter; the classification-related step comprises at least one instance of application identification whereby the type of the application is determined using the trained classifier in said learning-related step.
    Type: Application
    Filed: July 14, 2022
    Publication date: January 25, 2024
    Applicants: SABANCI UNIVERSITY, AIRTIES KABLOSUZ ILETISIM SAN VE DIS TIC ANONIM SIRKETI
    Inventors: Huseyin OZKAN, Recep TEMELLI, Ozgur GURBUZ, Oguz Kagan KOKSAL, Ahmet Kaan IPEKOREN, Furkan CANBAL, Baran Deniz KARAHAN, Mehmet Sukru KURAN
  • Patent number: 11081798
    Abstract: A full-duplex radio system includes a monostatic antenna, digital self-interference cancellation (DSIC) and cyclic prefix noise reduction (CPNR) method and circuitry applying said method suitable for orthogonal frequency division multiplexing (OFDM) based full-duplex wireless communications. Said system, method and circuitry applying said method are implementable within the paradigm of in-band full-duplex (IBFD) monostatic antenna architecture, an embodiment of which comprises a dual-polarized, slot-coupled antenna.
    Type: Grant
    Filed: October 8, 2019
    Date of Patent: August 3, 2021
    Assignee: SABANCI UNIVERSITESI
    Inventors: Ozgur Gurbuz, Ibrahim Tekin, Mikail Yilan, Hayrettin Ayar
  • Publication number: 20210105696
    Abstract: An online learning-based smart steering system and method comprises an online kernel perceptron classifier. The smart steering approach/method performs learning sequentially at the cloud from the entire data of multiple mesh networks, and, operates at APs for steering; both of which are executed in real-time. The system and method uses network features such as current RSSI (received signal strength indicator), current cost, target RSSI and target cost for every steering action resulting in either success of failure. The system and method uses a classifier based on this data for obtaining a model in the feature space which predicts whether a steering action can succeed or not before it is issued.
    Type: Application
    Filed: October 2, 2019
    Publication date: April 8, 2021
    Applicant: Sabanci Universitesi
    Inventors: Huseyin Ozkan, Ozgur Gurbuz, Bulut Kuskonmaz
  • Publication number: 20210104821
    Abstract: A full-duplex radio system includes a monostatic antenna, digital self-interference cancellation (DSIC) and cyclic prefix noise reduction (CPNR) method and circuitry applying said method suitable for orthogonal frequency division multiplexing (OFDM) based full-duplex wireless communications. Said system, method and circuitry applying said method are implementable within the paradigm of in-band full-duplex (IBFD) monostatic antenna architecture, an embodiment of which comprises a dual-polarized, slot-coupled antenna.
    Type: Application
    Filed: October 8, 2019
    Publication date: April 8, 2021
    Applicant: Sabanci Universitesi
    Inventors: Ozgur Gurbuz, Ibrahim Tekin, Mikail Yilan, Hayrettin Ayar
  • Patent number: 10952120
    Abstract: An online learning-based smart steering system and method comprises an online kernel perceptron classifier. The smart steering approach/method performs learning sequentially at the cloud from the entire data of multiple mesh networks, and, operates at APs for steering; both of which are executed in real-time. The system and method uses network features such as current RSSI (received signal strength indicator), current cost, target RSSI and target cost for every steering action resulting in either success of failure. The system and method uses a classifier based on this data for obtaining a model in the feature space which predicts whether a steering action can succeed or not before it is issued.
    Type: Grant
    Filed: October 2, 2019
    Date of Patent: March 16, 2021
    Assignee: Sabanci Universitesi
    Inventors: Huseyin Ozkan, Ozgur Gurbuz, Bulut Kuskonmaz
  • Patent number: 10455618
    Abstract: An S-CW FD system includes a method of operating a local area network accessible by a plurality of local area network communication nodes, each station including transceiver means adapted to operate on a wireless electromagnetic wave transmission channel. The system includes a synchronized contention window (S-CW) full duplex (FD) protocol enabling full duplex communication in wireless local area networks (WLAN) by means of a medium access control (MAC) protocol.
    Type: Grant
    Filed: August 1, 2018
    Date of Patent: October 22, 2019
    Assignee: Sabanci Universitesi
    Inventors: Ozgur Gurbuz, Deniz Marlali
  • Publication number: 20180343104
    Abstract: An S-CW FD system includes a method of operating a local area network accessible by a plurality of local area network communication nodes, each station including transceiver means adapted to operate on a wireless electromagnetic wave transmission channel. The system includes a synchronized contention window (S-CW) full duplex (FD) protocol enabling full duplex communication in wireless local area networks (WLAN) by means of a medium access control (MAC) protocol.
    Type: Application
    Filed: August 1, 2018
    Publication date: November 29, 2018
    Applicant: Sabanci Universitesi
    Inventors: Ozgur Gurbuz, Deniz Marlali
  • Publication number: 20160081024
    Abstract: The present invention proposes a method of communication in a wireless relay network for finding group of relays that minimizes total energy consumption to send one successful bit to destination node, under reliability condition expressed in terms of average BER level, said method comprising three main phases in the manner that a reservation stage where cooperative data transmission request is made by the source node, an ACO epoch, where the announcements of the candidate relays are sent, the cooperation set is formed and power levels are assigned, and the cooperative data transmission stage itself, are defined.
    Type: Application
    Filed: May 8, 2013
    Publication date: March 17, 2016
    Applicant: SABANCI ÜNIVERSITESI
    Inventors: Muharrem Sarper GÖKTÜRK, Özgür GÜRBÜZ, Murat ERMAN
  • Patent number: 9236928
    Abstract: An apparatus and method for operating a Multiple Input Multiple Output (MIMO)-capable subscriber node are disclosed. In one embodiment, an apparatus includes a MIMO-capable physical layer transceiver and a Medium Access Control (MAC) layer block that measures a received transmission to determine channel conditions. Upon receiving a transmission wherein said channel conditions meet specified conditions, the MAC layer block transmits a message to an access point indicating that the apparatus wants to switch between a non-MIMO mode and a MIMO mode, and upon receiving an acknowledgement, the MAC layer block switches between the non-MIMO mode and the MIMO mode. An apparatus for operating an access node is also disclosed.
    Type: Grant
    Filed: November 18, 2013
    Date of Patent: January 12, 2016
    Assignee: Cisco Technology, Inc.
    Inventors: Ozgur Gurbuz, David Pignatelli, David Stephenson, Eldad Perahia, Bretton Douglas, Ender Ayanoglu
  • Patent number: 8625507
    Abstract: An apparatus and method for operating a Multiple Input Multiple Output (MIMO)-capable subscriber node are disclosed. In one embodiment, an apparatus includes a MIMO-capable physical layer transceiver and a Medium Access Control (MAC) layer block that measures a received transmission to determine channel conditions. Upon receiving a transmission wherein said channel conditions meet specified conditions, the MAC layer block transmits a message to an access point indicating that the apparatus wants to switch between a non-MIMO mode and a MIMO mode, and upon receiving an acknowledgement, the MAC layer block switches between the non-MIMO mode and the MIMO mode. An apparatus for operating an access node is also disclosed.
    Type: Grant
    Filed: March 7, 2011
    Date of Patent: January 7, 2014
    Assignee: Cisco Technology, Inc.
    Inventors: Ozgur Gurbuz, David Pignatelli, David Stephenson, Eldad Perahia, Bretton Douglas, Ender Ayanoglu
  • Patent number: 8462812
    Abstract: This invention related to a bandwidth estimation method which is easily implementable on network nodes and enables to be made better routing decisions (for example the link with higher residual bandwidth should be favored in routing decisions) and/or estimates the flow admission control (for example accept a new flow only if there is enough available path residual bandwidth) by enabling estimation of availability of the communication capacity estimates.
    Type: Grant
    Filed: November 25, 2008
    Date of Patent: June 11, 2013
    Assignee: Sabanci Universitesi
    Inventors: Ozgur Gurbuz, Ozgur Ercetin, Yunus Sarikaya, Cem Atalay
  • Patent number: 8363629
    Abstract: Systems and methods for improving throughput in point-to-point wireless communication links are provided. In one particular implementation, a media access control (MAC) layer of the IEEE 802.11 standard is enhanced for use in point-to-point links to take advantage of the limited number of nodes participating in the link. In one embodiment, a master/slave type protocol provides contention free operation between two wireless nodes. Multiple priority levels and voice traffic may be accommodated with guaranteed Quality of Service.
    Type: Grant
    Filed: June 16, 2009
    Date of Patent: January 29, 2013
    Assignee: Cisco Technology, Inc.
    Inventors: Ozgur Gurbuz, Ender Ayanoglu, Robert Meier
  • Publication number: 20110228695
    Abstract: This invention related to a bandwidth estimation method which is easily implementable on network nodes and enables to be made better routing decisions (for example the link with higher residual bandwidth should be favored in routing decisions) and/or estimates the flow admission control (for example accept a new flow only if there is enough available path residual bandwidth) by enabling estimation of availability of the communication capacity estimates.
    Type: Application
    Filed: November 25, 2008
    Publication date: September 22, 2011
    Applicant: SABANCI UNIVERSITESI
    Inventors: Ozgur Gurbuz, Ozgur Ercetin
  • Patent number: 7929412
    Abstract: An apparatus and method for operating a Multiple Input Multiple Output (MIMO)-capable subscriber node are disclosed. In one embodiment, an apparatus includes a MIMO-capable physical layer transceiver and a Medium Access Control (MAC) layer block that measures a received transmission to determine channel conditions. Upon receiving a transmission wherein said channel conditions meet specified conditions, the MAC layer block requests an access point for permission to switch between a non-MIMO mode and a MIMO mode, and upon receiving permission, the MAC layer block switches between the non-MIMO mode and the MIMO mode. An apparatus for operating an access node is also disclosed.
    Type: Grant
    Filed: October 16, 2007
    Date of Patent: April 19, 2011
    Assignee: Cisco Technology, Inc.
    Inventors: Ozgur Gurbuz, David Pignatelli, David Stephenson, Eldad Perahia, Bretton Douglas, Ender Ayanoglu
  • Patent number: 7567537
    Abstract: Systems and methods for improving throughput in point-to-point wireless communication links are provided. In one particular implementation, a media access control (MAC) layer of the IEEE 802.11 standard is enhanced for use in point-to-point links to take advantage of the limited number of nodes participating in the link. In one embodiment, a master/slave type protocol provides contention free operation between two wireless nodes. Multiple priority levels and voice traffic may be accommodated with guaranteed Quality of Service.
    Type: Grant
    Filed: July 29, 2002
    Date of Patent: July 28, 2009
    Assignee: Cisco Technology, Inc.
    Inventors: Ozgur Gurbuz, Ender Ayanoglu, Robert Meier
  • Patent number: 7301924
    Abstract: The MAC layer of a wireless communication standard is modified to facilitate MIMO (multiple input multiple output) processing and thereby increase capacity and/or spectral efficiency. In one implementation, the IEEE 802.11a standard is modified in this way. A contention free period (CFP) is divided between MIMO communications and non-MIMO communications. An access point may maintain a list of nodes operating in MIMO mode and nodes operating in non-MIMO mode.
    Type: Grant
    Filed: July 15, 2002
    Date of Patent: November 27, 2007
    Assignee: Cisco Technology, Inc.
    Inventors: Ozgur Gurbuz, David Pignatelli, David Stephenson, Eldad Perahia, Bretton Douglas, Ender Ayanoglu
  • Patent number: 7000021
    Abstract: Systems and methods for retransmitting unsuccessfully transmitted data across a communication link. The retransmission mechanism may be applied to point to multipoint networks including wireless networks. Each packet is encapsulated in an ARQ frame and assigned a sequence number for the purpose of coordinating acknowledgments and retransmissions. Information as to which packets require retransmission is communicated in the form of a bitmap where each bit indicates an acknowledgment status for a given packet. Any missing packets in the received sequence are assumed to require retransmission.
    Type: Grant
    Filed: October 12, 2001
    Date of Patent: February 14, 2006
    Assignee: Cisco Technology, Inc.
    Inventors: Ramesh Radhakrishnan, Kushal Patel, Ozgur Gurbuz, Ender Ayanoglu, Arun Khanna, Alon Bernstein, Cindy Chan