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).
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Publication number: 20240028670Abstract: 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: ApplicationFiled: July 14, 2022Publication date: January 25, 2024Applicants: SABANCI UNIVERSITY, AIRTIES KABLOSUZ ILETISIM SAN VE DIS TIC ANONIM SIRKETIInventors: Huseyin OZKAN, Recep TEMELLI, Ozgur GURBUZ, Oguz Kagan KOKSAL, Ahmet Kaan IPEKOREN, Furkan CANBAL, Baran Deniz KARAHAN, Mehmet Sukru KURAN
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Patent number: 11081798Abstract: 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: GrantFiled: October 8, 2019Date of Patent: August 3, 2021Assignee: SABANCI UNIVERSITESIInventors: Ozgur Gurbuz, Ibrahim Tekin, Mikail Yilan, Hayrettin Ayar
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Publication number: 20210105696Abstract: 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: ApplicationFiled: October 2, 2019Publication date: April 8, 2021Applicant: Sabanci UniversitesiInventors: Huseyin Ozkan, Ozgur Gurbuz, Bulut Kuskonmaz
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Publication number: 20210104821Abstract: 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: ApplicationFiled: October 8, 2019Publication date: April 8, 2021Applicant: Sabanci UniversitesiInventors: Ozgur Gurbuz, Ibrahim Tekin, Mikail Yilan, Hayrettin Ayar
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Patent number: 10952120Abstract: 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: GrantFiled: October 2, 2019Date of Patent: March 16, 2021Assignee: Sabanci UniversitesiInventors: Huseyin Ozkan, Ozgur Gurbuz, Bulut Kuskonmaz
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Patent number: 10455618Abstract: 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: GrantFiled: August 1, 2018Date of Patent: October 22, 2019Assignee: Sabanci UniversitesiInventors: Ozgur Gurbuz, Deniz Marlali
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Publication number: 20180343104Abstract: 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: ApplicationFiled: August 1, 2018Publication date: November 29, 2018Applicant: Sabanci UniversitesiInventors: Ozgur Gurbuz, Deniz Marlali
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Publication number: 20160081024Abstract: 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: ApplicationFiled: May 8, 2013Publication date: March 17, 2016Applicant: SABANCI ÜNIVERSITESIInventors: Muharrem Sarper GÖKTÜRK, Özgür GÜRBÜZ, Murat ERMAN
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Patent number: 9236928Abstract: 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: GrantFiled: November 18, 2013Date of Patent: January 12, 2016Assignee: Cisco Technology, Inc.Inventors: Ozgur Gurbuz, David Pignatelli, David Stephenson, Eldad Perahia, Bretton Douglas, Ender Ayanoglu
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Patent number: 8625507Abstract: 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: GrantFiled: March 7, 2011Date of Patent: January 7, 2014Assignee: Cisco Technology, Inc.Inventors: Ozgur Gurbuz, David Pignatelli, David Stephenson, Eldad Perahia, Bretton Douglas, Ender Ayanoglu
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Patent number: 8462812Abstract: 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: GrantFiled: November 25, 2008Date of Patent: June 11, 2013Assignee: Sabanci UniversitesiInventors: Ozgur Gurbuz, Ozgur Ercetin, Yunus Sarikaya, Cem Atalay
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Patent number: 8363629Abstract: 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: GrantFiled: June 16, 2009Date of Patent: January 29, 2013Assignee: Cisco Technology, Inc.Inventors: Ozgur Gurbuz, Ender Ayanoglu, Robert Meier
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Publication number: 20110228695Abstract: 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: ApplicationFiled: November 25, 2008Publication date: September 22, 2011Applicant: SABANCI UNIVERSITESIInventors: Ozgur Gurbuz, Ozgur Ercetin
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Patent number: 7929412Abstract: 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: GrantFiled: October 16, 2007Date of Patent: April 19, 2011Assignee: Cisco Technology, Inc.Inventors: Ozgur Gurbuz, David Pignatelli, David Stephenson, Eldad Perahia, Bretton Douglas, Ender Ayanoglu
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Patent number: 7567537Abstract: 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: GrantFiled: July 29, 2002Date of Patent: July 28, 2009Assignee: Cisco Technology, Inc.Inventors: Ozgur Gurbuz, Ender Ayanoglu, Robert Meier
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Patent number: 7301924Abstract: 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: GrantFiled: July 15, 2002Date of Patent: November 27, 2007Assignee: Cisco Technology, Inc.Inventors: Ozgur Gurbuz, David Pignatelli, David Stephenson, Eldad Perahia, Bretton Douglas, Ender Ayanoglu
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Patent number: 7000021Abstract: 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: GrantFiled: October 12, 2001Date of Patent: February 14, 2006Assignee: Cisco Technology, Inc.Inventors: Ramesh Radhakrishnan, Kushal Patel, Ozgur Gurbuz, Ender Ayanoglu, Arun Khanna, Alon Bernstein, Cindy Chan