Optical Transport Networks for 5G cellular systems (Supervisor: Luca Valcarenghi, SSSUP)
This work will focus on designing and evaluating wired optical transport for supporting 5G cellular systems. Current protocol, such as CPRI, will be first evaluated. Then novel solutions based on the encapsulation of CPRI on layer2/layer1 protocols will be devised. The study can be conducted through simulations or by implementing some solutions on FPGAs.
Design and evaluation of a future municipal broadband network (Supervisor: Luca Valcarenghi, SSSUP)
This thesis will focus tools for designing and evaluating a future municipal transport network. The study will focus on collecting the requirements of a municipal broadband network, implementing design algorithms, evaluating the performance of the designed network and implementing a web interface for locating the broadband network nodes. The most of the work will based on C/C++ and Java programming.
Reliable Flexible Optical Networks (Supervisor: A. Giorgetti, SSSUP)
This work will elaborate reliable routing algorithms for flexible optical networks. In particular, GMPLS control plane will be considered and compared with emerging SDN approaches based on OpenFlow protocol. This work will be mainly conducted using OPNET programming.
Flexible multi bit-rate wavelength switched optical networks (WSONs) (Supervisor: Filippo Cugini, and Piero Castoldi, SSSUP)
Due to network upgrades, in centralized wavelength switched optical networks path computation element (PCE) has to guarantee the coexistence of different bit-rates in the same WSON. Several new issues arise ranging from QoT guarantee to traffic engineering need to be addressed also using the recently established technique of flexible grid provisioning.
Energy efficient solutions for wireless networks based on LTE (Supervisor: Isabella Cerutti, SSSUP)
Due to the ever increasing power consumption of the wireless networks at the operator side, solutions for enabling energy efficiency and energy proportionality (i.e., a power consumption proportional to the utilization) are required. The thesis aims at studying energy efficient and energy proportional solutions to be implemented at the base station of Long Term Evolution (LTE) cellular networks.
Enhanced scheduler for optical interconnection networks (Supervisor: Nicola Andriolli, SSSUP)
A two-step scheduler (TSS) for optical interconnection networks has been recently proposed. TSS outperforms the existing schedulers in computational complexity and performance. The thesis aims at enhancing the current scheduler for the support of advanced features such as interconnection network energy-awareness, packet-mode operation, quality of service, and multicast.
Design and characterization of Photonic Integrated for optical interconnection networks (Supervisor: Nicola Andriolli, Isabella Cerutti, SSSUP)
The aim of the thesis is to design and characterize the behavior a photonic integrated circuit of a the whole or part of an optical interconnection network. Innovative solutions for integrating photonic and electronic design will also be explored.
Implementation of scheduler and switch controller with Field Programmable Gated Array (FPGA) (Supervisor: Nicola Andriolli, Isabella Cerutti, SSSUP)
The aim of the thesis is to extend the current implemented scheduler with FPGA and carry out the first experiments on the control of photonic integrated switches.
Energy efficient design of data center networks based on optical switches (Supervisor: Isabella Cerutti, SSSUP)
Today's data center networks are consuming up to 50% of the overall power drained by the data center. The replacement of the electrical Ethernet switches with optical switches has been proposed to reduce the energy consumption. The thesis aims at optimally designing the data center network with optical switches to minimize the overall power consumption, while ensuring the required connectivity and bandwidth.
De-fragmentation techniques in flex-grid optical networks (Supervisor: Nicola Sambo, Piero Castoldi, SSSUP)
In flex-grid optical networks, spectrum fragmentation may prevent lightpath setup. Effective techniques for de-fragmentation (i.e., re-optimization) are then required to limit the wasting of spectrum resources. The objective of this thesis is the study and the proposal of novel and effective de-fragmentation techniques and algorithms.
Support of multicast in dynamic GMPLS networks (Supervisor: Nicola Sambo, Piero Castoldi, SSSUP)
For supporting multicast services (such as IPTV, online gaming), GMPLS control plane needs to be properly extended. The thesis aims at developing GMPLS extension for supporting multicast in wavelength switched optical networks (WSONs). Dynamic performance of the proposed extension will be compared to the standardized GMPLS control plane.
Energy efficient design of wavelength switched optical networks (WSONs) with flexible multi-rate grid support (Supervisor: Nicola Sambo, Piero Castoldi, SSSUP)
The physical layer of the wavelength switched optical networks is being enhanced with the support of different transmission rates in flexible transmission grids. The study aims to optimize the design of a WSON with flexible multi-rate grid to enable support of the requested connections in an energy efficient way.
Energy efficiency in access networks (Supervisor: Luca Valcarenghi, SSSUP)
This thesis will focus on implementing an energy efficient Optical Network Unit (ONU) prototype. Energy efficient ONUs are optical customer premises equipments that implement schemes that automatically turn them off (i.e., put to sleep) the they are idle. This thesis will deal with the implementation of an ONU prototype implementing sleep modes into an FPGA.
Advanced smart management system for electric vehicles recharge (SMS-EV) (Supervisors: Luca Valcarenghi, SSSUP – Barbara Martini, CNIT)
This thesis will focus on simulating an advanced smart management system for electric vehicles recharge (SMS-EV). In particular both distributed and centralized algorithms for maximizing the system sustainability from the perspective of both the end users (i.e., EV drivers) and the service providers (i.e., electrical utility providers and micro producers of renewable energy resources) will be evaluated. The thesis will mainly involve programming an event-driven simulator to implement and evaluate the proposed algorithms.
Advanced management solutions for Cloud Data Centers (Supervisor: Barbara Martini and Piero Castoldi, SSSUP)
Ever more popular cloud computing services are pushing towards convergent data center infrastructures acting as a unified pool of shared resources for many distributed services (e.g., cloud computing, high performance computing). In such a context the network interconnection among and within data centers become crucial. Key to the whole process is a management system able to jointly manage network, computing and data storage elements while enabling dynamic network reconfiguration, QoS-guaranteed data transfer and coordinated network control and management procedures also exploiting the novel Software-Defined Network (SDN) paradigm for controlling network data flows over heterogeneous systems.