John A Gu

US Patent:

7852763, Dec 14, 2010

Filed:

May 8, 2009

Appl. No.:

12/387934

Inventors:

Reza Ghanadan - Berkeley Heights NJ, US
John Gu - Rockaway NJ, US
Jessica Y. Hsu - Washington DC, US
Gregory S. Sadosuk - Fairfax VA, US
Phong C. Khuu - Ashburn VA, US
Brian Loop - Fairfax VA, US

Assignee:

BAE Systems Information and Electronic Systems Integration Inc. - Nashua NH

International Classification:

H04L 12/24

US Classification:

3702301, 370231, 370252, 370412

Abstract:

A wireless communications network comprising a plurality of nodes and effective to provide quality of service requirements for packets being transmitted. An ingress node calculates variables based on quality of service requirements and places those variables in a header of a packet to be transmitted. The packet is then transmitted to a core node. The core node reads the variables in the packet and calculates a holding time for the packet based on the variables and the quality of service requirements.

US Patent:

7911962, Mar 22, 2011

Filed:

Apr 15, 2008

Appl. No.:

12/103268

Inventors:

Phong C. Khuu - Ashburn VA, US
Michael J. Weber - Warrenton VA, US
Gregory S. Sadosuk - Fairfax VA, US
Brian D. Loop - Fairfax VA, US
John Gu - Rockaway NJ, US
Reza Ghanadan - Berkeley Heights NJ, US
Jessica Hsu - Clifton NJ, US

Assignee:

BAE Systems Information and Electronic Systems Integration Inc. - Nashua NH

International Classification:

G01R 31/08

US Classification:

370238

Abstract:

A method and apparatus is provided for using a distributed multi-path QoS-aware routing scheme that considers basic MANET characteristics to meet transport service requirements of real-time applications and makes use of multiple discovered paths to calculate a next-hop decision. The QoS Routing scheme superimposes distributed neighborhood congestion, neighborhood density, and link stability and delay information over the multiple discovered paths when the next-hop decision is calculated.

US Patent:

7936697, May 3, 2011

Filed:

Aug 30, 2007

Appl. No.:

11/897474

Inventors:

John A. Gu - Rockaway NJ, US
Jessica Y. Hsu - Clifton NJ, US
Gregory S. Sadosuk - Fairfax VA, US
Phong C. Khuu - Ashburn VA, US

Assignee:

BAE Systems Information and Electronic Systems Integration Inc. - Nashua NH

International Classification:

G01R 31/08

US Classification:

370252, 370328, 370310, 370256

Abstract:

Systems and methods provide adaptability in a mobile ad hoc network (MANET), based on an existing protocol, such as adaptive hybrid domain routing (AHDR). The systems and methods are especially suited for fast changing topologies that may change after a reactive route discovery has been completed.

US Patent:

8391271, Mar 5, 2013

Filed:

Mar 19, 2010

Appl. No.:

12/727899

Inventors:

Shaomin Mo - Montville NJ, US
John A. Gu - Rockaway NJ, US
Jessica Y. Hsu - Washington DC, US
Ming Luo - Fairfax VA, US
Reza Ghanadan - Berkeley Heights NJ, US

Assignee:

BAE Systems Information and Electronic Systems Integration Inc. - Nashua NH

International Classification:

H04J 3/06

US Classification:

370350, 370462, 370509

Abstract:

Time synchronization among nodes in a wireless mobile ad hoc network (MANET) is obtained using a cross layer approach. Each node maintains a routing table that contains entries corresponding to other nodes of the network that are one or more hops away from the node, and topology messages are exchanged periodically among the nodes in order to update their routing tables. A network master node is selected, and remaining nodes that are one or more hops away from the master node are defined as slave nodes. The master node includes master timing information in the topology messages it transmits. The timing information is concatenated to include a first time (T) at which a topology message was received by the master from each of the slave nodes, and a second time (td) at which the master node transmits a topology message after receiving all the topology messages from the slave nodes.

US Patent:

8560256, Oct 15, 2013

Filed:

Jul 16, 2010

Appl. No.:

12/838270

Inventors:

John A. Gu - Rockaway NJ, US
Chuck-yan Wu - San Gabriel CA, US
Matthew K. Donnelly - Gallatin Gateway MT, US
Jerry C. L. Kwok - Kew Garden NY, US

Assignee:

Nexlent, LLC - Rockaway NJ

International Classification:

G01R 21/00
G06F 11/30

US Classification:

702 62, 702116, 702117, 702183

Abstract:

Electrical power system sensor devices, electrical power system monitoring methods, and electrical power system monitoring systems are disclosed according to some aspects of the description. In one aspect, an electrical power system sensor device includes sensor circuitry configured to monitor a characteristic of electrical energy which is conducted using an electrical conductor of an electrical power system, an attachment assembly configured to position the sensor circuitry with respect to the electrical conductor wherein the sensor circuitry monitors the characteristic of the electrical energy which is conducted within the electrical conductor of the electrical power system, and wherein the sensor circuitry is electrically isolated from the electrical conductor of the electrical power system.

US Patent:

8570892, Oct 29, 2013

Filed:

Mar 23, 2011

Appl. No.:

13/069808

Inventors:

Reza Ghanadan - Berkeley Heights NJ, US
John A. Gu - Rockaway NJ, US
Jessica Y. Hsu - Washington DC, US
Gregory S. Sadosuk - Fairfax VA, US
Phong C. Khuu - Ashburn VA, US

Assignee:

BAE Systems Information and Electronic Systems Integration Inc. - Nashua NH

International Classification:

G01R 31/08

US Classification:

370252, 370310, 370328, 370256

Abstract:

Systems and methods provide adaptability in a mobile ad hoc network (MANET), based on an existing protocol, such as adaptive hybrid domain routing (AHDR). The systems and methods are especially suited for fast changing topologies that may change after a reactive route discovery has been completed.

US Patent:

20100014444, Jan 21, 2010

Filed:

Oct 12, 2006

Appl. No.:

11/546783

Inventors:

Reza Ghanadan - Berkeley Heights NJ, US
John Gu - Rockaway NJ, US
Jessica Hsu - Clifton NJ, US
Greg Sadosuk - Fairfax VA, US
Phong Khuu - Ashburn VA, US

International Classification:

H04B 7/005

US Classification:

370310

Abstract:

Domains are formed in a mobile ad hoc network by exchanging topology update messages among neighboring nodes, each message including the node coverage of the originating node. The node having an optimum coverage of its neighbors becomes a domain lead (DL) node, and nodes within hearing distance or range of the DL node form a network domain. Each domain node, including the DL, selects a set of bridge nodes (BNs) that can link the domain node to nodes in corresponding neighboring domains. All domain lead nodes in the network exchange messages to inform one another of the nodes contained in their respective domains. A node in one domain seeking a route for a message destined to a node in another domain, may send a route discovery (RDisc) message to the DL node of the inquiring node's domain. A responsive route resolution (RRes) message is returned to the inquiring node.

US Patent:

20120250629, Oct 4, 2012

Filed:

Jan 31, 2011

Appl. No.:

13/017819

Inventors:

Shaomin Mo - Montville NJ, US
John A. Gu - Rockaway NJ, US
Ming Luo - Fairfax VA, US
Joseph Farkas - Merrimack NH, US
Reza Ghanadan - Berkeley Heights NJ, US

International Classification:

H04W 72/04

US Classification:

370329

Abstract:

A method of providing medium access control for a wireless mobile ad hoc network includes defining a TDMA network timing frame including a data (DATA) zone having one or more time slots structured to support multiuser detection (MUD) of concurrent transmissions during each slot, a negative acknowledgment (NACK) zone during which nodes transmit requests for retransmission of packets destined to but not successfully received by the nodes, a broadcast (BC) zone during which network management messages are broadcast to the nodes, and a control (CTRL) zone. A primary master (PM) node is selected and operates as a source of network time for all the nodes. Each node synchronizes its time to that of the PM node during the CTRL zone in a distributed manner, by exchanging control messages with the PM node or other nodes located one or more hops from the PM node.