At&t Intellectual Property I, L.p.

At+t Corp.

James Anthony Schmitt

John Gregory Klincewicz

Richard Tekee Wong

David James Houck, Jr

Jeffrey Stein

Li-Jin Wu Chung

Yu-Lein Kung

Richard Alan Farel

David Frederick Lynch

Ching-Chyuan Shieh

Alek Remash

Mei Deng

Luiz Antonio Vitoria

Dicky Chi Kwong Yan

Ken Ambs

Sebastian Cwilich

A method and apparatus that employ the use of CDRs to effectively monitor and proactively respond to network or service events that impact performance within a network are disclosed. For example, the method receives a plurality of call detail records (CDRs), wherein each of the plurality of call detail records comprises a plurality of fields. The method determines a n-field rule signature from each of the call detail records (CDRs), and analyzes the n-field rule signatures from the plurality of call detail records (CDRs) for detecting at least one network performance problem.

Method and apparatus for detecting network and service performance degradations using call detail records

A system and computer-readable medium for designing a network are disclosed. A network is designed by a system having modules configured to perform steps that generate the network wherein nodes originate and terminate traffic to keep delay related to node-to-node delay-sensitive communication below a threshold. The computer-readable medium stores instructions for controlling a computing device to design the network. The instructions comprise obtaining an initial network topology including links and traffic routing based on a volume of traffic, allocating a maximum delay to each link in the network topology in proportion to a square root of an imputed cost for each of the links, sizing a bandwidth required for each of the links based on a current traffic routing and at least one of a maximum delay allocated to the link, determining link lengths and rerouting traffic according to shortest paths with respect to the determined link lengths.

System and method for designing a network

An apparatus and method for designing a network are disclosed. The network is designed wherein nodes originate and terminate traffic to keep delay related to node-to-node delay-sensitive communication below a specified threshold. The method obtains an initial network topology including links and traffic routing based on a volume of traffic, allocates a maximum delay to each link in the network topology in proportion to the square root of an imputed cost for each link, sizes a bandwidth required for each link based on a current traffic routing and at least one of a maximum delay allocated to the link, determines link lengths and reroutes traffic according to shortest paths with respect to the determined link lengths.

Apparatus and method for designing a network

A method and apparatus for designing a network that supports an integrated environment for all types of applications while satisfying individual performance requirements. An initial network topology is retrieved or created, including links and traffic routing based on a volume of traffic. A maximum delay is then allocated to each link in the network topology so that the delay limits on node-to-node communication are satisfied. Further, a bandwidth required for each link is sized based on a current traffic routing as well as a maximum delay allocated to the link and total link utilization. Link lengths are then determined, based on marginal costs, and traffic is rerouted according to shortest paths with respect to the link lengths.

Method for designing a network

A method and system are provided for computing an optimal restoration capacity and/or optimal restoration paths for a network to resolve a restoration scenario by solving a linear program (LP) model. The LP model includes decision variables corresponding to restoration capacity and restoration paths and constraints requiring restoration of traffic and conservation of capacity in the network. For example, the system determines a set of network paths that need to be restored in the network, preprocesses network data corresponding to the network to reduce LP processing workload and time; generates possible restoration paths and solves the LP model, preferably through column generation methods, to determine the optimal restoration capacity and/or the optimal restoration paths to resolve the restoration scenario; changes the LP solution into integer form, as necessary, and changes the LP solution in integer form to the original format of the network data or an equivalent thereof.

Optimizing restoration capacity

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Little Silver, NJ, United States of America

James Anthony Schmitt