Patents by Inventor Abhijit Choudhury
Abhijit Choudhury 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: 20240154542Abstract: A power conversion device charges a plurality of storage devices and includes a plurality of converter units that receives AC power and outputs DC power, and a bidirectional DC/DC converter connected between two DC outputs of a plurality of DC outputs of the plurality of converter units. The bidirectional DC/DC converter transmits at least a part of output power of the converter unit at one DC output from the one DC output to the other DC output of the two DC outputs according to required power of the plurality of storage devices.Type: ApplicationFiled: October 12, 2023Publication date: May 9, 2024Inventors: Abhijit CHOUDHURY, Takae SHIMADA
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Publication number: 20240039416Abstract: This bidirectional DC-DC converter comprises: a transformer; a first bridge circuit for converting DC power and AC power to each other which are input and output between a first DC power supply and the primary side of the transformer; a second bridge circuit for converting DC power and AC power to each other which are input and output between a second DC power supply and the secondary side of the transformer; a first resonant circuit connectable between the first bridge circuit and the primary side of the transformer; a second resonant circuit connectable between the second bridge circuit and the secondary side of the transformer; a first bypass switch for switching the connection state of the first resonant circuit between the first bridge circuit and the primary side of the transformer; a second bypass switch for switching the connection state of the second resonant circuit between the second bridge circuit and the secondary side of the transformer; and a control unit for controlling each of the first bypasType: ApplicationFiled: June 2, 2021Publication date: February 1, 2024Inventors: Abhijit CHOUDHURY, Akihiko KANOUDA
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Publication number: 20240030824Abstract: An aspect of the present disclosure is a power conversion device including: a primary-side transformer to which a primary AC voltage is input from a primary-side circuit; and a secondary-side transformer that outputs a secondary AC voltage lower than the primary AC voltage to a secondary-side circuit. The primary-side transformer includes a primary-side primary winding to which the primary AC voltage is input, and a primary-side secondary winding to which power is transmitted from the primary-side primary winding. The secondary-side transformer includes a secondary-side primary winding constituting a closed circuit together with the primary-side secondary winding, and a secondary-side secondary winding to which power is transmitted from the secondary-side primary winding and which outputs the secondary AC voltage. The primary-side circuit and the closed circuit are connected to a common potential.Type: ApplicationFiled: July 14, 2023Publication date: January 25, 2024Inventors: Kimihisa FURUKAWA, Yuuichi MABUCHI, Takae SHIMADA, Mohammed Mosaddique Nawaz HUSSAIN, Hiroshi KAMIZUMA, Yuki KAWAGUCHI, Abhijit CHOUDHURY, Akihiko KANOUDA
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Patent number: 10848414Abstract: In some embodiments, an apparatus includes a network node configured to be included in a set of network nodes operatively coupled to a core network node. The network node is configured to receive a first packet and a second packet from a host device operatively coupled to the network node. The network node is configured to send the first packet to the core network node via a first path of a tunnel between the network node and the core network node. The first path of the tunnel has a first cost. The network node is configured to send the second packet to the core network node via a second path of the tunnel. The second path has a second cost different than the first cost.Type: GrantFiled: October 23, 2018Date of Patent: November 24, 2020Assignee: Juniper Networks, Inc.Inventors: James Murphy, Nischal Sheth, Abhijit Choudhury, Raghavendra Mallya, Pranay Pogde, Phalguni Nanda, Jayabharat Boddu, Pradeep Sindhu
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Patent number: 10469312Abstract: In some embodiments, an apparatus includes a first controller configured to be operatively coupled within a network having a set of network nodes, a forwarding gateway and a configuration entity. The first controller is configured to manage session state and node state associated with the set of network nodes independent of the forwarding gateway. The first controller is configured to fail over to a second controller when the first controller fails, without the forwarding gateway failing over and without the configuration entity failing over.Type: GrantFiled: January 30, 2018Date of Patent: November 5, 2019Assignee: Juniper Networks, Inc.Inventors: Abhijit Choudhury, James Murphy, Pranay Pogde, Shine-Chu Wang, Rajagopalan Sivaramakrishnan, Raghavendra Mallya, Ileana J. Membreno, Sandip Shah, Yung-Ching Tseng
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Patent number: 10285102Abstract: In some embodiments, a non-transitory processor-readable medium includes code to cause a processor to receive at a tunnel server, a data unit addressed to a communication device, and define, a first instance of the data unit and a second instance of the data unit. The first instance of the data unit is sent to the communication device via a first tunnel defined between at least the tunnel server and a first base station associated with a first network. The second instance of the data unit is sent to the communication device via a second tunnel defined between at least the tunnel server and a second base station associated with a second network. The second instance of the data unit is dropped by the communication device when the first instance of the data unit is received before the second instance of the data unit.Type: GrantFiled: November 30, 2017Date of Patent: May 7, 2019Assignee: Juniper Networks, Inc.Inventors: James Murphy, Abhijit Choudhury
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Patent number: 10171260Abstract: Techniques are provided to manage how router advertisement messages are forwarded for ultimate wireless transmission in a wireless network. In one embodiment, a multicast router advertisement message intended for a virtual local area network is converted into individual unicast router advertisement messages directed to specific wireless mobile client devices that are part of that virtual local area network. In another embodiment, router advertisement messages are routed between controllers according to the current location of a wireless mobile client device. In still other embodiments, techniques are provided to minimize the volume of the router advertisement messages sent over a wireless network, and to proactively send a unicast router advertisement message to a mobile client device that has performed a handoff, without waiting for a router solicitation message.Type: GrantFiled: June 6, 2016Date of Patent: January 1, 2019Assignee: Cisco Technology, Inc.Inventors: Srinath Gundavelli, Abhijit Choudhury, Rohit Suri, Venkatesh Kanagasabapathy, Bhavannarayana Nelakanti, Sudhir Jain
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Patent number: 10148550Abstract: In some embodiments, an apparatus includes a network node configured to be included in a set of network nodes operatively coupled to a core network node. The network node is configured to receive a first packet and a second packet from a host device operatively coupled to the network node. The network node is configured to send the first packet to the core network node via a first path of a tunnel between the network node and the core network node. The first path of the tunnel has a first cost. The network node is configured to send the second packet to the core network node via a second path of the tunnel. The second path has a second cost different than the first cost.Type: GrantFiled: September 14, 2012Date of Patent: December 4, 2018Assignee: Juniper Networks, Inc.Inventors: James Murphy, Nischal Sheth, Abhijit Choudhury, Raghavendra Mallya, Pranay Pogde, Phalguni Nanda, Jayabharat Boddu, Pradeep Sindhu
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Patent number: 10122574Abstract: In some embodiments, an apparatus comprises of a control module implemented in at least one of a memory or a processing device that is configured to receive, via a network and from a wireless access point or an access network node, a control packet defined based on a control protocol. The control packet is associated with at least one control function of the wireless access point or access network node. The control module is configured to determine a status of an access network node based on the control packet from the access network node. The control module is configured to send via the network, a response to the access network node based on the status of the access network node.Type: GrantFiled: June 5, 2017Date of Patent: November 6, 2018Assignee: Juniper Networks, Inc.Inventors: James Murphy, Sandip Shah, Abhijit Choudhury, Pranay Pogde, Yung-Ching Tseng
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Patent number: 10085253Abstract: In some embodiments, an apparatus comprises of a first Control And Provisioning of Wireless Access Points (CAPWAP) module implemented in at least one of a memory or a processing device that is configured to be designated as a backup control module for a wireless access point during a first time period. The first CAPWAP control module is configured to receive state information associated with the wireless access point during the first time period from a second CAPWAP control module. The second CAPWAP control module is designated as a primary control module for the wireless access point during the first time period. The first CAPWAP control module is configured to be automatically designated as the primary control module during a second time period after the first time period and in response to the second CAPWAP control module not operating according to at least one predefined criterion.Type: GrantFiled: March 27, 2017Date of Patent: September 25, 2018Assignee: Juniper Networks, Inc.Inventors: James Murphy, Sandip Shah, Abhijit Choudhury, Pranay Pogde, Yung-Ching Tseng
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Patent number: 10015046Abstract: In some embodiments, an apparatus includes a network node operatively coupled within a network. The network node is configured to send a first authentication message upon boot up, and receive, in response to the first authentication message, a second authentication message configured to be used to authenticate the network node. The network node is configured to send a first discovery message, and receive, based on the first discovery message, a second discovery message configured to be used by the network node to identify an address of the network node and an address of a core network node within the network. The network node is configured to set up a control-plane tunnel to the core network node based on the address of the network node and the address for the core network node and receive configuration information from the core network node through the control-plane tunnel.Type: GrantFiled: May 5, 2017Date of Patent: July 3, 2018Assignee: Juniper Networks, Inc.Inventors: James Murphy, Nischal Sheth, Abhijit Choudhury, Raghavendra Mallya, Pranay Pogde, Phalguni Nanda, Jayabharat Boddu, Pradeep Sindhu
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Publication number: 20180092012Abstract: In some embodiments, a non-transitory processor-readable medium includes code to cause a processor to receive at a tunnel server, a data unit addressed to a communication device, and define, a first instance of the data unit and a second instance of the data unit. The first instance of the data unit is sent to the communication device via a first tunnel defined between at least the tunnel server and a first base station associated with a first network. The second instance of the data unit is sent to the communication device via a second tunnel defined between at least the tunnel server and a second base station associated with a second network. The second instance of the data unit is dropped by the communication device when the first instance of the data unit is received before the second instance of the data unit.Type: ApplicationFiled: November 30, 2017Publication date: March 29, 2018Applicant: Juniper Networks, Inc.Inventors: James MURPHY, Abhijit CHOUDHURY
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Patent number: 9906407Abstract: In some embodiments, an apparatus includes a first controller configured to be operatively coupled within a network having a set of network nodes, a forwarding gateway and a configuration entity. The first controller is configured to manage session state and node state associated with the set of network nodes independent of the forwarding gateway. The first controller is configured to fail over to a second controller when the first controller fails, without the forwarding gateway failing over and without the configuration entity failing over.Type: GrantFiled: October 28, 2016Date of Patent: February 27, 2018Assignee: Juniper Networks, Inc.Inventors: Abhijit Choudhury, James Murphy, Pranay Pogde, Shine-Chu Wang, Rajagopalan Sivaramakrishnan, Raghavendra Mallya, Ileana Membreno, Sandip Shah, Yung-Ching Tseng
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Patent number: 9854493Abstract: In some embodiments, a non-transitory processor-readable medium includes code to cause a processor to receive at a tunnel server, a data unit addressed to a communication device, and define, a first instance of the data unit and a second instance of the data unit. The first instance of the data unit is sent to the communication device via a first tunnel defined between at least the tunnel server and a first base station associated with a first network. The second instance of the data unit is sent to the communication device via a second tunnel defined between at least the tunnel server and a second base station associated with a second network. The second instance of the data unit is dropped by the communication device when the first instance of the data unit is received before the second instance of the data unit.Type: GrantFiled: January 27, 2015Date of Patent: December 26, 2017Assignee: Juniper Networks, Inc.Inventors: James Murphy, Abhijit Choudhury
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Patent number: 9800494Abstract: In some embodiments, an apparatus comprises a core network node and a control module within an enterprise network architecture. The core network node is configured to be operatively coupled to a set of wired network nodes and a set of wireless network nodes. The core network node is configured to receive a first tunneled packet associated with a first session from a wired network node from the set of wired network nodes. The core network node is configured to also receive a second tunneled packet associated with a second session from a wireless network node from the set of wireless network nodes through intervening wired network nodes from the set of wired network nodes. The control module is operatively coupled to the core network node. The control module is configured to manage the first session and the second session.Type: GrantFiled: June 29, 2016Date of Patent: October 24, 2017Assignee: Juniper Networks, Inc.Inventors: Pradeep Sindhu, Abhijit Choudhury, James Murphy, Raghavendra Mallya, Pranay Pogde, Phalguni Nanda, Jayabharat Boddu, Gunes Aybay, Anjan Venkatramani
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Publication number: 20170279675Abstract: In some embodiments, an apparatus includes a network node operatively coupled within a network. The network node is configured to send a first authentication message upon boot up, and receive, in response to the first authentication message, a second authentication message configured to be used to authenticate the network node. The network node is configured to send a first discovery message, and receive, based on the first discovery message, a second discovery message configured to be used by the network node to identify an address of the network node and an address of a core network node within the network. The network node is configured to set up a control-plane tunnel to the core network node based on the address of the network node and the address for the core network node and receive configuration information from the core network node through the control-plane tunnel.Type: ApplicationFiled: May 5, 2017Publication date: September 28, 2017Applicant: Juniper Networks, Inc.Inventors: James MURPHY, Nischal SHETH, Abhijit CHOUDHURY, Raghavendra MALLYA, Pranay POGDE, Phalguni NANDA, Jayabharat BODDU, Pradeep SINDHU
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Publication number: 20170272307Abstract: In some embodiments, an apparatus comprises of a control module implemented in at least one of a memory or a processing device that is configured to receive, via a network and from a wireless access point or an access network node, a control packet defined based on a control protocol. The control packet is associated with at least one control function of the wireless access point or access network node. The control module is configured to determine a status of an access network node based on the control packet from the access network node. The control module is configured to send via the network, a response to the access network node based on the status of the access network node.Type: ApplicationFiled: June 5, 2017Publication date: September 21, 2017Applicant: Juniper Networks, Inc.Inventors: James Murphy, Sandip Shah, Abhijit Choudhury, Pranay Pogde, Yung-Ching Tseng
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Publication number: 20170201979Abstract: In some embodiments, an apparatus comprises of a first Control And Provisioning of Wireless Access Points (CAPWAP) module implemented in at least one of a memory or a processing device that is configured to be designated as a backup control module for a wireless access point during a first time period. The first CAPWAP control module is configured to receive state information associated with the wireless access point during the first time period from a second CAPWAP control module. The second CAPWAP control module is designated as a primary control module for the wireless access point during the first time period. The first CAPWAP control module is configured to be automatically designated as the primary control module during a second time period after the first time period and in response to the second CAPWAP control module not operating according to at least one predefined criterion.Type: ApplicationFiled: March 27, 2017Publication date: July 13, 2017Applicant: Juniper Networks, Inc.Inventors: James MURPHY, Sandip SHAH, Abhijit CHOUDHURY, Pranay POGDE, Yung-Ching TSENG
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Patent number: 9674030Abstract: In some embodiments, an apparatus comprises of a control module implemented in at least one of a memory or a processing device that is configured to receive, via a network and from a wireless access point or an access network node, a control packet defined based on a control protocol. The control packet is associated with at least one control function of the wireless access point or access network node. The control module is configured to determine a status of an access network node based on the control packet from the access network node. The control module is configured to send via the network, a response to the access network node based on the status of the access network node.Type: GrantFiled: September 28, 2012Date of Patent: June 6, 2017Assignee: Juniper Networks, Inc.Inventors: James Murphy, Sandip Shah, Abhijit Choudhury, Pranay Pogde, Yung-Ching Tseng
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Patent number: 9667485Abstract: In some embodiments, an apparatus includes a network node operatively coupled within a network. The network node is configured to send a first authentication message upon boot up, and receive, in response to the first authentication message, a second authentication message configured to be used to authenticate the network node. The network node is configured to send a first discovery message, and receive, based on the first discovery message, a second discovery message configured to be used by the network node to identify an address of the network node and an address of a core network node within the network. The network node is configured to set up a control-plane tunnel to the core network node based on the address of the network node and the address for the core network node and receive configuration information from the core network node through the control-plane tunnel.Type: GrantFiled: October 4, 2011Date of Patent: May 30, 2017Assignee: Juniper Networks, Inc.Inventors: James Murphy, Nischal Sheth, Abhijit Choudhury, Raghavendra Mallya, Pranay Pogde, Phalguni Nanda, Jayabharat Boddu, Pradeep Sindhu