Ajay A Sathyanath

7545736, Jun 9, 2009

Sep 26, 2003

10/673057

Zbigniew M. Dziong - Montreal, CA
Ajay Sathyanath - Woodbridge NJ, US

Alcatel-Lucent USA Inc. - Murray Hill NJ

G01R 31/08

370217, 370227, 370238, 370242

A method for determining a restoration path corresponding to a primary path for a new service in a mesh network involves (1) generating path costs for candidate restoration paths for the new service, and (2) selecting, for the new service, the restoration path with the lowest path cost, where generating the path cost involves (a) determining, for each link Li in the candidate restoration path, a set B-Li-set of links protected by Li (b) determining, for each link Li, a set I-Li-set of links in the set B-Li-set that are also in the primary path (c) calculating, for each link Li, a link cost based on the set B-Li-set and the set I-Li-set, and (d) calculating the path cost based on a sum of the link costs. In some embodiments, the method includes an efficient scheme for representing, disseminating, storing, and updating sharing information in an OSPF-TE protocol context.

7809002, Oct 5, 2010

Apr 16, 2007

11/735687

Kamala Prasad Das - Manalapan NJ, US
Ajay Sathyanath - Woodbridge NJ, US

Alcatel-Lucent USA Inc. - Murray Hill NJ

H04L 12/56
H04L 12/26

37039542, 370231, 370235

Apparatus and method for adapting a control plane of a communications network normally using a call session control function (CSCF) in communication with a resource access control function (RACF) by providing a priority service functional element (PS-FE) to handle call admission and priority services.

8195835, Jun 5, 2012

Jan 28, 2004

10/766164

Furquan A. Ansari - Middletown NJ, US
Ajay Sathyanath - Woodbridge NJ, US

Alcatel Lucent - Paris

G06F 15/16
G06F 15/173

709245, 709225, 709238

A seamless transport endpoint mobility (STEM) architecture migrates a transport connection endpoint from an old IP address to a new IP address without loss of the session. The migration process is negotiated between two endpoints themselves. Transport endpoint mobility includes communication between two STEM daemons, one STEM daemon in each endpoint, which dynamically updates kernel data structures (e. g. , elements of a 5-tuple associated with a TCP/IP application) associated with the session. Migration is transparent to the application using the underlying transport connection for data transfer.

8214640, Jul 3, 2012

Dec 5, 2005

11/294731

Kamala Prasad Das - Manalapan NJ, US
Ajay Sathyanath - Woodbridge NJ, US

Alcatel Lucent - Paris

H04L 29/06

713160, 713153

A method is provided for passing control messages and other information through a SIP network by embedding the information in SIP messages. The information is sent from one SIP agent to another by encrypting the information, embedding the encrypted information in one or more implementation-defined SIP header fields, and transmitting a SIP message that includes the field or fields in which the information is embedded.

8249236, Aug 21, 2012

Dec 30, 2008

12/317900

Kamala Prasad Das - Manalapan NJ, US
Ajay Sathyanath - Edison NJ, US

Alcatel Lucent - Paris

H04M 3/42
H04M 7/00

37920201, 37921001, 37922103, 37922104, 37922107

An exemplary method includes receiving at a calling party network a notice of an intended communication between a calling endpoint and a plurality of called endpoints located in a plurality of called party networks, wherein the intended communication requires a resource in each of the calling party network and the called party networks for supporting a streaming data protocol. The notice is forwarded toward the plurality of called party networks and in parallel with said forwarding, a determination of resource availability for the calling party network is initiated for the intended communication. The method further includes determining for the intended communication the determination of resource availability for the calling party network, wherein the determination is for a first resource for the first network; and verifying resource availability for the intended communication based on the determination for the calling party network and a resource availability indicator for each called party network.

8570870, Oct 29, 2013

Dec 30, 2008

12/317881

Kamala Prasad Das - Manalapan NJ, US
Ajay Sathyanath - Edison NJ, US

Alcatel Lucent - Paris

H04L 12/28
H04L 12/66
H04L 12/56

370235, 370352, 3703952, 370401

An exemplary method includes receiving at a first network a notice of an intended communication to a called party network, wherein the intended communication requires a resource for supporting a streaming data protocol in each network between a calling party network and the called party network; forwarding the notice of an intended communication to a second network and toward the called party network; in parallel with said forwarding, initiating for the intended communication a determination of resource availability for the first network; performing for the intended communication the determination of resource availability for the first network, wherein the determination is for a first resource for the first network; and verifying resource sufficiency for the intended communication. Verification of resource sufficiency is based on resource, (e. g. , bandwidth) availability being greater than a threshold for plural network segment of the calling party to calling network required for the intended call.

20060067210, Mar 30, 2006

Sep 30, 2004

10/955109

Hua Liu - Ottawa, CA
Ajay Sathyanath - Woodbridge NJ, US

Lucent Technologies, Inc. - Murray Hill NJ

G01R 31/08

370217000

The Resource Reservation Protocol (RSVP) is to gather outgoing interface identification information (e.g., outgoing interface ID's or IP addresses) for each node in a primary path. This information is “recorded” in an opaque object (referred to herein as the “RECORD PRIMARY PATH” or “RPP” object). In accordance with the present invention, the information contained in the opaque object is stored in two databases for each node, with local interface information of a particular node being stored in its Local Links Database (LLDB), and information identifying the primary links that affect the backup bandwidth calculation for that node being stored in its External Links Database (ELDB). Each node has its own LLDB and ELDB (or has the LLDB and ELDB data stored in a larger database in such a way that it is can be separately accessible on a node-by-node basis) so that, for each node, the information can be obtained and used. The admission controller at each node in the primary path uses the data in the LLDB and ELDB to compute the exact (least) amount of bandwidth required to be reserved on every link of the primary path.

20100034196, Feb 11, 2010

Dec 30, 2008

12/317882

Kamala Prasad Das - Manalapan NJ, US
Ajay Sathyanath - Edison NJ, US

H04L 12/66
H04M 3/42

370352, 37921102

An exemplary management method includes receiving at a first network a notice of an intended communication to a called party network, the notice including a first priority indicator, the intended communication requiring a resource for supporting a streaming data protocol in each network between a calling party network and the called party network; forwarding the notice to a second network and toward the called party network, the notice including the first priority indicator; in parallel with said forwarding, mapping the first priority indicator to a second priority indicator and initiating for the intended communication a determination of resource availability for the first network based on the second priority indicator; determining the determination of resource availability for the first network based on the second priority indicator, wherein the determination is for a first resource for the first network; and verifying resource availability for the intended communication.