Alma Mater Studiorum, Universita di Bologna
The research activities of Aldo Campi are related to two different main topics, high performance burst and optical packet switching network and design and performance of Network Service Oriented architectures.
The first part of Aldo Campi’s PhD was focused on the study of network infrastructures proposing a scheduler for optical switching node able to achieve nanosecond time processing. The scheduler stemmed from an original mathematical formulation of the scheduling problem, which matched very well with the hardware implementation. The performance of the scheduler was tested and demonstrated by means of a FPGA prototyped simulation.
The main challenge faced during the second part of his Ph.D. was to study several aspects of design and resource optimization for service oriented networking enabled to the transport of traffic generated by grid computing applications. His main contribution was to propose an innovative signaling plane for exploiting network virtualization functionalities in a new “service oriented” network layer. The aim of this layer was to orchestrate both application and network resources in a single communication session. The signaling plane was composed by a statefull session protocol and an ontology based language, i.e. Network Resource Description Language (NRDL), originally proposed and developed by Aldo Campi. The signaling plane was tested in two different testbed, a prototype of Optical Burst Switching network in the University of Essex, UK and a GMPLS network at Scuola Superiore Sant'Anna, Pias, Italy.
With minor modifications the signalling plane was extended for cognitive communication network applied in cloud computing and extensively tested in a real environment with different use cases. The experimental activity was conducted mainly in the laboratory of communication networks of the University of Bologna migrating virtual instances between different cloud nodes and testing video on demand application with different quality of service.
Because of the signalling plane versatility it has also been tested in other application scenario with respect to the creation of communication sessions in a vehicular network environment. To this end the campus vehicular testbed at UCLA University, USA, has been exploited to simulate VANET network infrastructure running the signalling platform.
Currently Aldo Campi is working in an extension of the service plane in the field of Software Defined Networking as a means of reliable communication middleware between virtual nodes.