1
Tirunell V Lakshman, Thyagarajan Nandagopal, Ramachandran Ramjee, Krishan K Sabnani, Thomas Y Woo: Softrouter. Alcatel Lucent USA, Wall & Tong, May 11, 2010: US07715382 (18 worldwide citation)

The SoftRouter architecture separates the implementation of control plane functions from packet forwarding functions. In this architecture, all control plane functions are implemented on general purpose servers called the control elements (CEs) that may be multiple hops away from the forwarding elem ...


2
Furquan Ahmed Ansari, Martin Havemann, Tirunell V Lakshman, Thyagarajan Nandagopal, Ramachandran Ramjee, Thomas Y Woo: Softrouter protocol disaggregation. Alcatel Lucent, Wall & Tong, November 29, 2011: US08068408 (11 worldwide citation)

A SoftRouter architecture deconstructs routers by separating the control entities of a router from its forwarding components, enabling dynamic binding between them. In the SoftRouter architecture, control plane functions are aggregated and implemented on a few smart servers which control forwarding ...


3
Muralidharan S Kodialam, Thyagarajan Nandagopal: Characterizing the capacity region in multi-channel, multi-radio mesh networks. Alcatel Lucent USA, Mendelsohn Drucker & Associates P C, April 5, 2011: US07920991 (7 worldwide citation)

A method of characterizing a capacity region in a multi-channel, multi-radio mesh network of nodes interconnected by links. The method includes: (a) modeling the network by determining one or more link-flow feasibility constraints; (b) obtaining a feasible upper-capacity bound by solving an optimiza ...


4
Furquan Ahmed Ansari, Martin Havemann, Tirunell V Lakshman, Thyagarajan Nandagopal, Ramachandran Ramjee, Thomas Y Woo: Softrouter dynamic binding protocol. Alcatel Lucent, Wall & Tong, February 10, 2015: US08953432 (5 worldwide citation)

A dynamic binding protocol has three tasks that run in parallel: discovery, association, and operation. During discovery, control elements (CEs) and forwarding elements (FEs) learn about immediate neighbors and CEs in a SoftRouter network that has separate control and data planes. During association ...


5
Muralidharan S Kodialam, Thyagarajan Nandagopal: Characterizing achievable flow rates in multi-hop mesh networks with orthogonal channels. Alcatel Lucent USA, Mendelsohn Drucker & Associates P C, February 9, 2010: US07660315 (4 worldwide citation)

A method of routing data in a multi-hop network. In one embodiment, the method includes: determining that a link-flow vector representing a set of flows to be routed from a source to a destination node satisfies necessary scheduling conditions for achievability; generating a scheduling multi-graph h ...


6
Thyagarajan Nandagopal: Authentication and verification services for third party vendors using mobile devices. Alcatel Lucent, Wall & Tong, January 13, 2015: US08934865 (3 worldwide citation)

A method to provide authentication services to third party vendors by a service provider hosting an authentication, authorization and accounting (AAA) server or a similar device that can authenticate users for some other service. This method enables easy and substantially error-free end-user authent ...


7
Thyagarajan Nandagopal, Thomas Y Woo: Single and dual rate three color marker systems. Alcatel Lucent, M J Hodulik, February 26, 2013: US08385206 (2 worldwide citation)

An advance is made over the prior art in accordance with the principles of the present invention that is directed to a new approach for a system and method of Single Rate Three Color Marker (srTCM) and Two Rate Three Color Marker (trTCM) methodology. The invention eliminates deficiencies present in ...


8
Muralidharan S Kodialam, Wing Cheong Lau, Thyagarajan Nandagopal: Anonymous tracking using a set of wireless devices. Alcatel Lucent, Mendelsohn Drucker & Associates P C, October 30, 2012: US08299900 (1 worldwide citation)

In one embodiment, a method for estimating the number of tags in a set of tags in a system of tags and readers. The method includes, during each of a plurality of time intervals: (i) transmitting a command requesting that each tag that receives the command determine whether to transmit a reply; and ...


9
Furquan Ahmed Ansari, Martin Havemann, Tirunell V Lakshman, Thyagarajan Nandagopal, Ramachandran Ramjee, Thomas Y Woo: Softrouter protocol disaggregation. Alcatel Lucent, Wall & Tong, April 30, 2013: US08432787 (1 worldwide citation)

A SoftRouter architecture deconstructs routers by separating the control entities of a router from its forwarding components, enabling dynamic binding between them. In the SoftRouter architecture, control plane functions are aggregated and implemented on a few smart servers which control forwarding ...


10
Thyagarajan Nandagopal, Thomas Y Woo: Apparatus and method for a multi-level enmeshed policer. Alcatel Lucent, M J Hodulik, September 24, 2013: US08542602 (1 worldwide citation)

An enmeshed hierarchy of policers, different from traditional tree-based hierarchical system of policers is used in accordance with the present invention. A goal of using an enmeshed architecture of policing systems is to allow for a more complex set of policies to be defined across a network. Hiera ...