Angela Lan Chiu, Age 569 Huntley Rd, Holmdel, NJ 07733

6744767, Jun 1, 2004

Dec 30, 1999

09/475512

Angela L. Chiu - Holmdel NJ
Seyhan Civanlar - Middletown Township, Monmouth County NJ
Albert Gordon Greenberg - Millburn NJ
Zhuangbo Tang - Tinton Falls NJ

ATT Corp. - New York NY

H04L 1254

37039521, 370231, 370468

An architecture, design, and realization for providing Quality of Service (QoS) to Internet Protocol (IP) networks based on a three-class differentiated service scheme where the service provider uses a resource management system and a schedule optimizer to enable the optimal use of bandwidth and buffer resources at each node or router along the various links between the ingress and egress points in a network. The resource reservation system checks to determine if sufficient bandwidth resources are available along the path requested by the customer for a particular class. The schedule optimizer ensures that sufficient buffer resource allocations and parameter settings are made to optimally reach the predetermined QoS criteria for each of the three classes. The system also contains a mechanism supporting resource reservations providing additional resources along alternative paths if the selected path links fail in the network.

6973033, Dec 6, 2005

Mar 23, 2004

10/806742

Angela L. Chiu - Holmdel NJ, US
Seyhan Civanlar - Middletown Township, Monmouth County NJ, US
Albert Gordon Greenberg - Millburn NJ, US
Zhuangbo Tang - Tinton Falls NJ, US

AT&T Corp. - New York NY

H04J003/16

3702301, 370235, 37039521, 709223, 709229

An architecture, design, and realization for providing Quality of Service (QoS) to Internet Protocol (IP) networks based on a three-class differentiated service scheme where the service provider uses a resource management system and a schedule optimizer to enable the optimal use of bandwidth and buffer resources at each node or router along the various links between the ingress and egress points in a network. The resource reservation system checks to determine if sufficient bandwidth resources are available along the path requested by the customer for a particular class. The schedule optimizer ensures that sufficient buffer resource allocations and parameter settings are made to optimally reach the predetermined QoS criteria for each of the three classes. The system also contains a mechanism supporting resource reservations providing additional resources along alternative paths if the selected path links fail in the network.

6999420, Feb 14, 2006

Dec 30, 1999

09/476309

Angela L. Chiu - Holmdel NJ, US
Seyhan Civanlar - Middletown Township, Monmouth County NJ, US
Albert Gordon Greenberg - Millburn, DE
Zhuangbo Tang - Tinton Falls NJ, US

AT & T Corp. - New York NY

H04L 12/54

370231, 37039521, 370468

An architecture, design, and realization for providing Quality of Service (QoS) to Internet Protocol (IP) networks based on a three-class differentiated service scheme where the service provider uses a resource management system and a schedule optimizer to enable the optimal use of bandwidth and buffer resources at each node along the various links between the ingress and egress points in a network. The resource reservation system checks to determine whether sufficient bandwidth resources are available along the path requested by the customer for a particular class. The schedule optimizer ensures that sufficient buffer resource allocations and parameter settings are made to optimally reach the predetermined QoS criteria for each of the three classes. The system also contains a mechanism supporting resource reservations providing additional resources along alternative paths if the selected path links fail in the network.

7171070, Jan 30, 2007

Feb 4, 2005

11/051377

Martin Birk - Belford NJ, US
Angela Lan Chiu - Holmdel NJ, US
John L. Strand - Holmdel NJ, US

AT&T Corp. - New York NY

G02B 6/28
H04B 10/08

385 24, 385 15, 385123, 398 25, 398 27, 398 49, 346 33 R

An arrangement provides low cost path protection in an optical communications network. The arrangement has a portion that provides (broadcasts) an outbound optical signal, and at least first and second transmitting portions transmit the outbound optical signal simultaneously onto at least first and second respective mutually distinct optical pathways. Meanwhile, a selection arrangement selects among plural incoming optical signals (via ) according to a control signal to provide a selected signal, and an analyzer analyzes characteristics of the selected signal to provide the control signal.

7228027, Jun 5, 2007

Aug 31, 2006

11/513970

Martin Birk - Belford NJ, US
Angela Lan Chiu - Holmdel NJ, US
John L. Strand - Holmdel NJ, US

AT&T Corp. - New York NY

G02B 6/28
H04B 10/08

385 24, 385 15, 385123, 398 25, 398 27, 398 49, 346 33 R

An arrangement provides low cost path protection in an optical communications network. The arrangement has a portion that provides (broadcasts) an outbound optical signal, and at least first and second transmitting portions transmit the outbound optical signal simultaneously onto at least first and second respective mutually distinct optical pathways. Meanwhile, a selection arrangement selects among plural incoming optical signals (via ) according to a SELECT control signal to provide a selected signal, and an analyzer analyzes characteristics of the selected signal to provide the SELECT control signal.

7230924, Jun 12, 2007

Mar 28, 2001

09/819555

Angela L. Chiu - Holmdel NJ, US
Seyhan Civanlar - Middletown Township, Monmouth County NJ, US
Leonard L. Lu - Holmdel NJ, US
Zhuangbo Tang - Tinton Falls NJ, US

AT&T Corp. - New York NY

H04L 12/26

370237, 37922103, 709242

This invention provides for a technique for selectively off-loading traffic from congested sub-regions of a network to more lightly-loaded regions by making use of Multiprotocol Label Switching (MPLS). For each network element, an Interior Gateway Protocol (IGP) routing is employed to provide re-routing and to identify congested links caused by re-routed trunks for each single failure. The re-routed traffic is then analyzed and alternate Label Switched Paths (LSPs) are identified for such traffic trunks so that the traffic is directed to the alternate LSPs during the single failure event.

7389018, Jun 17, 2008

Apr 30, 2007

11/799007

Martin Birk - Belford NJ, US
Angela Lan Chiu - Holmdel NJ, US
John L. Strand - Holmdel NJ, US

AT&T Corp. - New York NY

G02B 6/28
H04B 10/08

385 24, 385 15, 385123, 398 25, 398 27, 398 49, 346 33 R

An arrangement provides low cost path protection in an optical communications network. The arrangement has a portion that provides (broadcasts) an outbound optical signal, and at least first and second transmitting portions transmit the outbound optical signal simultaneously onto at least first and second respective mutually distinct optical pathways. Meanwhile, a selection arrangement selects among plural incoming optical signals (via ) according to a SELECT control signal to provide a selected signal, and an analyzer analyzes characteristics of the selected signal to provide the SELECT control signal.

7526198, Apr 28, 2009

Nov 30, 2005

11/289770

Angela Chiu - Holmdel NJ, US
John L. Strand - Holmdel NJ, US
Robert Tkach - Little Silver NJ, US

AT&T Corp. - New York NY

H04B 10/08

398 19, 398 12, 398 16

A method includes receiving a restoration indicator associated with a path that includes an optical cross-connect (OXC). The OXC is reconfigured from a standby configuration to a restoration configuration in response to the restoration indicator. An optical signal received in a first direction at a first wavelength is optically regenerated to produce an optical signal in the first direction at a second wavelength. An optical signal received in a second direction at the second wavelength is optically regenerated to produce an optical signal in the second direction at the first wavelength.