Patents by Inventor Berend Dunsbergen
Berend Dunsbergen 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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Patent number: 10327186Abstract: A technique for providing per station control of multiple stations in a wireless network across multiple access points. A look-up table that assigns a station connected to the access point and at least one communication parameter to each of a plurality of persistent, uniquely-assigned BSSIDs (Basic Service Set Identifiers) is stored. An access point responds to messages addressed one of the plurality of persistent, uniquely-assigned BSSIDs and ignores messages addressed to other BSSIDs. Persistence of the BSSID allows the controller to maintain individual control over each station after moving to a second access point of the plurality of access points. A frame comprising the plurality of BSSIDs corresponding to each connected station aggregated into the frame is generated. The frame is transmitted to the plurality of stations.Type: GrantFiled: May 4, 2017Date of Patent: June 18, 2019Assignee: Fortinet, Inc.Inventors: Anil Kaushik, Sirivatsan Sankaranarayanan, Vaduvur Bharghavan, Sung-Wook Han, Joseph Epstein, Berend Dunsbergen, Saravanan Balasubramaniyan
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Patent number: 10278105Abstract: AP's associated with a communication network and any wireless devices desiring contact, operated according to a protocol in which each wireless device selects AP's with which to communicate. A system coordinator causes the AP's to operate so as to guide each wireless device to an AP selected by the system coordinator. This has the effect that, notwithstanding that the protocol involves having the wireless device make the selection of AP, functionally, the AP's make the selection for it. In a 1st technique, multiple AP's share an identifier, with the system coordinator directing one particular AP to respond to the wireless device, thus appearing to wireless devices as a “personal cell”. In a 2nd technique, AP's each maintain identifiers substantially unique to each wireless device, with the system coordinator directing only one particular AP to maintain any particular wireless device's identifier, thus appearing to wireless devices as a “personal AP”.Type: GrantFiled: November 14, 2017Date of Patent: April 30, 2019Assignee: Fortinet, Inc.Inventors: Vaduvur Bharghavan, Sung-Wook Han, Joseph Epstein, Berend Dunsbergen, Saravanan Balasubramanian
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Patent number: 10225764Abstract: Uplink medium access control on per-wireless device level for a specific user. An access point sends a beacon frame to a wireless device. The beacon frame includes a BSSID that is unique to the wireless device. The beacon frame also includes embedded uplink configurations specifying uplink medium access for the wireless device. In one embodiment, a controller recognizes a device or user associated with the device, and sends corresponding uplink configurations for embedding in a subsequent beacon frame.Type: GrantFiled: September 24, 2015Date of Patent: March 5, 2019Assignee: Fortinet, Inc.Inventors: Mohan Ram, Sung-Wook Han, Berend Dunsbergen, Vaduvur Bharghavan, Joseph Epstein
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Patent number: 10225770Abstract: A control element identifies the possibility that a station will transfer to a destination AP, and prepares that destination for a handoff. The control element repurposes messages from the station which indicate a possible near-term handoff, to prepare access points to receive that handoff. The control element treats a neighbor list request as a trigger to select which AP's to identify, to restrict the neighbor list to selected AP's, and to prepare each selected AP for a handoff. In selecting a destination AP, the control element also selects a particular set of related features for the combination of that AP and BSS. When an AP receives a repurposed message, it informs the control element, which selects destination AP's for transfer. The control element treats the repurposed message like a probe request. The control element prepares more than one AP for transfer if handoff is possible to more than one AP.Type: GrantFiled: February 16, 2017Date of Patent: March 5, 2019Assignee: Fortinet, Inc.Inventors: Russ Jones, Berend Dunsbergen
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Publication number: 20190014179Abstract: Examples described herein include receiving from a first remote access device a first file comprising an attribute profile of a first Bluetooth low energy device. In some examples, the attribute profile may include a service and a characteristic associated with the service. Examples also include storing the first file in a manner associated with the first Bluetooth low energy device, providing a service that allows for a client device to perform a number of operations on the characteristic in the attribute profile, receiving a requested operation out of the number of operations, and transmitting the requested operation to the first remote access device. The client device may be remote from the first Bluetooth low energy device.Type: ApplicationFiled: July 7, 2017Publication date: January 10, 2019Inventors: Berend Dunsbergen, Peter Charles Mytton Thornycroft, Ankur Kamthe
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Patent number: 10044840Abstract: A client access point joins a wireless network over a wireless connection in order to allow stations access to the wireless network. To join, the client access point (having a wireless connection to a mesh network) receives a beacon frame with unique identifiers of authorized client access points from a host access point (having a wired connection to the mesh network). Responsive to a unique identifier of the beacon frame matching the unique identifier of the client access point, a connection request for a connection is sent. A connection response confirming configuration of the client access point with the host access point in accordance is received.Type: GrantFiled: May 31, 2016Date of Patent: August 7, 2018Assignee: Fortinet, Inc.Inventors: Berend Dunsbergen, Sung-Wook Han, Nair Madhavan, Narayanasami Vijayraghavan
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Publication number: 20180176844Abstract: AP's associated with a communication network and any wireless devices desiring contact, operated according to a protocol in which each wireless device selects AP's with which to communicate. A system coordinator causes the AP's to operate so as to guide each wireless device to an AP selected by the system coordinator. This has the effect that, notwithstanding that the protocol involves having the wireless device make the selection of AP, functionally, the AP's make the selection for it. In a 1st technique, multiple AP's share an identifier, with the system coordinator directing one particular AP to respond to the wireless device, thus appearing to wireless devices as a “personal cell”. In a 2nd technique, AP's each maintain identifiers substantially unique to each wireless device, with the system coordinator directing only one particular AP to maintain any particular wireless device's identifier, thus appearing to wireless devices as a “personal AP”.Type: ApplicationFiled: November 14, 2017Publication date: June 21, 2018Inventors: Vaduvur BHARGHAVAN, Sung-Wook HAN, Joseph EPSTEIN, Berend DUNSBERGEN, Saravanan BALASUBRAMANIAN
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Patent number: 9930595Abstract: A system and method for providing a seamless transition between access points for mobile devices. The method comprises associating a unique identifier for a plurality of mobile stations with a unique identifier for a first network in an acknowledgment table, then, upon receiving a frame from a mobile station, acknowledging the reception of the frame if the frame includes the unique identifier for the mobile station and the unique identifier for the network. The transfer of operation between access points is effectuated through the use of control circuitry which transfers portions of the contents of the acknowledgement table between various access points. This has the effect that the mobile stations does not sense a change in access points and thus the roaming from a first access point to a second access point is seamless.Type: GrantFiled: September 30, 2015Date of Patent: March 27, 2018Assignee: Fortinet, Inc.Inventors: Vaduvur Bharghavan, Berend Dunsbergen
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Patent number: 9860813Abstract: AP's associated with a communication network and any wireless devices desiring contact, operated according to a protocol in which each wireless device selects AP's with which to communicate. A system coordinator causes the AP's to operate so as to guide each wireless device to an AP selected by the system coordinator. This has the effect that, notwithstanding that the protocol involves having the wireless device make the selection of AP, functionally, the AP's make the selection for it. In a 1st technique, multiple AP's share an identifier, with the system coordinator directing one particular AP to respond to the wireless device, thus appearing to wireless devices as a “personal cell”. In a 2nd technique, AP's each maintain identifiers substantially unique to each wireless device, with the system coordinator directing only one particular AP to maintain any particular wireless device's identifier, thus appearing to wireless devices as a “personal AP”.Type: GrantFiled: December 2, 2015Date of Patent: January 2, 2018Assignee: Fortinet, Inc.Inventors: Vaduvur Bharghavan, Sung-Wook Han, Joseph Epstein, Berend Dunsbergen, Saravanan Balasubramanian
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Publication number: 20170347387Abstract: A client access point joins a wireless network over a wireless connection in order to allow stations access to the wireless network. To join, the client access point (having a wireless connection to a mesh network) receives a beacon frame with unique identifiers of authorized client access points from a host access point (having a wired connection to the mesh network). Responsive to a unique identifier of the beacon frame matching the unique identifier of the client access point, a connection request for a connection is sent. A connection response confirming configuration of the client access point with the host access point in accordance is received.Type: ApplicationFiled: May 31, 2016Publication date: November 30, 2017Inventors: Berend Dunsbergen, Sung-Wook Han, Nair Madhavan, Narayanasami Vijayraghavan
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Publication number: 20170303176Abstract: A technique for providing per station control of multiple stations in a wireless network across multiple access points. A look-up table that assigns a station connected to the access point and at least one communication parameter to each of a plurality of persistent, uniquely-assigned BSSIDs (Basic Service Set Identifiers) is stored. An access point responds to messages addressed one of the plurality of persistent, uniquely-assigned BSSIDs and ignores messages addressed to other BSSIDs. Persistence of the BSSID allows the controller to maintain individual control over each station after moving to a second access point of the plurality of access points. A frame comprising the plurality of BSSIDs corresponding to each connected station aggregated into the frame is generated. The frame is transmitted to the plurality of stations.Type: ApplicationFiled: May 4, 2017Publication date: October 19, 2017Inventors: Anil KAUSHIK, Sirivatsan Sankaranarayanan, Vaduvur Bharghavan, Sung-Wook Han, Joseph Epstein, Berend Dunsbergen, Saravanan BALASUBRAMANIYAN
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Patent number: 9730125Abstract: A technique for providing per station control of multiple stations in a wireless network across multiple access points. A look-up table that assigns a station connected to the access point and at least one communication parameter to each of a plurality of persistent, uniquely-assigned BSSIDs (Basic Service Set Identifiers) is stored. An access point responds to messages addressed one of the plurality of persistent, uniquely-assigned BSSIDs and ignores messages addressed to other BSSIDs. Persistence of the BSSID allows the controller to maintain individual control over each station after moving to a second access point of the plurality of access points. A frame comprising the plurality of BSSIDs corresponding to each connected station aggregated into the frame is generated. The frame is transmitted to the plurality of stations.Type: GrantFiled: October 1, 2014Date of Patent: August 8, 2017Assignee: Fortinet, Inc.Inventors: Anil Kaushik, Srivatsan Sankaranarayanan, Vaduvur Bharghavan, Sung-Wook Han, Joseph Epstein, Berend Dunsbergen, Saravanan Balasubramaniyan
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Patent number: 9713045Abstract: A control element identifies the possibility that a station will transfer to a destination AP, and prepares that destination for a handoff. The control element repurposes messages from the station which indicate a possible near-term handoff, to prepare access points to receive that handoff. The control element treats a neighbor list request as a trigger to select which AP's to identify, to restrict the neighbor list to selected AP's, and to prepare each selected AP for a handoff. In selecting a destination AP, the control element also selects a particular set of related features for the combination of that AP and BSS. When an AP receives a repurposed message, it informs the control element, which selects destination AP's for transfer. The control element treats the repurposed message like a probe request. The control element prepares more than one AP for transfer if handoff is possible to more than one AP.Type: GrantFiled: March 16, 2012Date of Patent: July 18, 2017Assignee: Fortinet, Inc.Inventors: Russ Jones, Berend Dunsbergen
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Publication number: 20170188272Abstract: A control element identifies the possibility that a station will transfer to a destination AP, and prepares that destination for a handoff. The control element repurposes messages from the station which indicate a possible near-term handoff, to prepare access points to receive that handoff. The control element treats a neighbor list request as a trigger to select which AP's to identify, to restrict the neighbor list to selected AP's, and to prepare each selected AP for a handoff. In selecting a destination AP, the control element also selects a particular set of related features for the combination of that AP and BSS. When an AP receives a repurposed message, it informs the control element, which selects destination AP's for transfer. The control element treats the repurposed message like a probe request. The control element prepares more than one AP for transfer if handoff is possible to more than one AP.Type: ApplicationFiled: February 16, 2017Publication date: June 29, 2017Inventors: Russ JONES, Berend DUNSBERGEN
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Patent number: 9635148Abstract: The present disclosure discloses a method and a network device for partitioning data sets for transmission on multiple physical links in a network. Specifically, a network device receives a particular data set addressed to a client device. The network device partitions the particular data set into at least a first subset of data and a second subset of data. Then, the network device encapsulates the first subset of data using a first header and encapsulating the second subset of data using a second header that results in (a) data with the first header being transmitted on a first physical link and (b) data with the second header being transmitted on a second physical link different than the first physical link. Finally, the network device transmits the first subset of data with the first header and the second subset of data with the second header.Type: GrantFiled: October 31, 2014Date of Patent: April 25, 2017Assignee: Aruba Networks, Inc.Inventors: Claudius Tewari, Gopalakrishnan Raman, Rajesh Mirukula, Sathish Damodaran, Berend Dunsbergen, Jie Jiang, Mohd Siraj
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Patent number: 9445226Abstract: The present disclosure discloses a method and network device for improving location accuracy in multi-channel wireless networks. Specifically, to coordinate with other Access Points (APs) and improve location accuracy of client devices, each access point can (a) obtain a schedule of another neighboring AP; (b) switch to the operating channel of the neighboring AP at a scheduled time for communication exchanges between the neighboring AP and the client device, (c) listen to the communication exchanges between the neighboring AP and the client device; (d) collecting signal samples, e.g., signal strength associated with messages originated from the client device; and (e) send the report to the location engine to allow the location engine collect more signal samples associated with the client device, thereby more accurately determine the location of the client device; etc.Type: GrantFiled: January 31, 2014Date of Patent: September 13, 2016Assignee: ARUBA NETWORKS, INC.Inventors: Neal Castagnoli, Peter Thornycroft, Berend Dunsbergen, Jie Jiang
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Publication number: 20160255561Abstract: AP's associated with a communication network and any wireless devices desiring contact, operated according to a protocol in which each wireless device selects AP's with which to communicate. A system coordinator causes the AP's to operate so as to guide each wireless device to an AP selected by the system coordinator. This has the effect that, notwithstanding that the protocol involves having the wireless device make the selection of AP, functionally, the AP's make the selection for it. In a 1st technique, multiple AP's share an identifier, with the system coordinator directing one particular AP to respond to the wireless device, thus appearing to wireless devices as a “personal cell”. In a 2nd technique. AP's each maintain identifiers substantially unique to each wireless device, with the system coordinator directing only one particular AP to maintain any particular wireless device's identifier, thus appearing to wireless devices as a “personal AP”.Type: ApplicationFiled: December 2, 2015Publication date: September 1, 2016Inventors: Vaduvur BHARGHAVAN, Sung-Wook Han, Joseph Epstein, Berend DUNSBERGEN, Saravanan BALASUBRAMANIAN
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Publication number: 20160127520Abstract: The present disclosure discloses a method and a network device for partitioning data sets for transmission on multiple physical links in a network. Specifically, a network device receives a particular data set addressed to a client device. The network device partitions the particular data set into at least a first subset of data and a second subset of data. Then, the network device encapsulates the first subset of data using a first header and encapsulating the second subset of data using a second header that results in (a) data with the first header being transmitted on a first physical link and (b) data with the second header being transmitted on a second physical link different than the first physical link. Finally, the network device transmits the first subset of data with the first header and the second subset of data with the second header.Type: ApplicationFiled: October 31, 2014Publication date: May 5, 2016Applicant: ARUBA NETWORKS, INC.Inventors: Claudius Tewari, Gopalakrishnan Raman, Rajesh Mirukula, Sathish Damodaran, Berend Dunsbergen, Jie Jiang, Mohd Siraj
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Publication number: 20160112917Abstract: A system and method for providing a seamless transition between access points for mobile devices. The method comprises associating a unique identifier for a plurality of mobile stations with a unique identifier for a first network in an acknowledgment table, then, upon receiving a frame from a mobile station, acknowledging the reception of the frame if the frame includes the unique identifier for the mobile station and the unique identifier for the network. The transfer of operation between access points is effectuated through the use of control circuitry which transfers portions of the contents of the acknowledgement table between various access points. This has the effect that the mobile stations does not sense a change in access points and thus the roaming from a first access point to a second access point is seamless.Type: ApplicationFiled: September 30, 2015Publication date: April 21, 2016Inventors: Vaduvur Bharghavan, Berend Dunsbergen
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Publication number: 20160088523Abstract: Uplink medium access control on per-wireless device level for a specific user. An access point sends a beacon frame to a wireless device. The beacon frame includes a BSSID that is unique to the wireless device. The beacon frame also includes embedded uplink configurations specifying uplink medium access for the wireless device. In one embodiment, a controller recognizes a device or user associated with the device, and sends corresponding uplink configurations for embedding in a subsequent beacon frame.Type: ApplicationFiled: September 24, 2015Publication date: March 24, 2016Inventors: Mohan RAM, Sung-Wook HAN, Berend DUNSBERGEN, Vaduvur BHARGHAVAN, Joseph EPSTEIN