Abstract: When network function virtualization (NFV) is overlaid on top of a SDN, a convergence gateway mediates between the orchestrator and the SDN controller. The convergence gateway collects from the orchestrator the information on the location, capacity, status, and usage information of all virtualized functions that run on SDN's physical platforms, and passes that information to the controller. The controller decides to optimally route a data flow for service chaining by obeying traffic engineering and quality of service policies of that data flow, choosing from available virtualized functions along that route. An information model based approach is also presented for information sharing across the orchestrator, convergence gateway and controller.

Abstract: When network function virtualization (NFV) is overlaid on top of a SDN, a convergence gateway mediates between the orchestrator and the SDN controller. The convergence gateway collects from the orchestrator the information on the location, capacity, status, and usage information of all virtualized functions that run on SDN's physical platforms, and passes that information to the controller. The controller decides to optimally route a data flow for service chaining by obeying traffic engineering and quality of service policies of that data flow, choosing from available virtualized functions along that route. An information model based approach is also presented for information sharing across the orchestrator, convergence gateway and controller.

Abstract: When network function virtualization (NFV) is overlaid on top of a SDN, a convergence gateway mediates between the NFV orchestrator and the SDN controller. The convergence gateway collects from the orchestrator the information on the workload and up/down status of virtualized network functions that run on SDN's physical resources, and passes such information to the controller. The controller then makes an intelligent decision regarding optimally routing data flows for service chaining, choosing from many available virtualized functions along the data path. Reciprocally, the convergence gateway collects, from the controller, the network congestion and available capacity information on all physical and virtualized network resources of the SDN, and feeds that information to the orchestrator. Accordingly, the orchestrator decides on where and when to activate/deactivate/capacitate virtual functions to best serve a service request.

Abstract: A novel method and system is introduced leveraging the data collected by a network probe to enhance cellular network capabilities to detect a man in the middle attack without using any software on the 3G mobile terminal. The new capabilities compile and process the data of call records collected from SS7 and location update messages in real time to determine the active 3G subscribers and to tag cells as 2G within a 3G coverage area to instantly identify an unknown cell generated by a fake base station. The system also has a component to notify authorities or to terminate the call once the fraud is identified.