Cognitive RSA for flexible optical networks
Tutor / director / evaluatorCareglio, Davide
Document typeMaster thesis
Rights accessOpen Access
As we move forward in time, the load on the internet increases. This charge is addressed by the infrastructure backbone of the service providers. This infrastructure is based on optical fiber interconnections. Today, the WDM technology is used to transmit, ensuring quality of service, of the demands that are generated in the network. However, WDM lacks the flexibility in spectrum allocation needed to climb along with the demands that will be presented in the future. EONs, thanks to the OFDM technology, allow the spectrum to be assigned more flexibly. There is flexibility leads to the further study Flexigrid calls in order to improve the efficiency of spectrum allocation over WDM. This increases the current capacity of optical networks. Despite the improvement offered by EONs, the same are affected by spectrum fragmentation, resulting in blockage of demands while having spectrum available, noncontiguous, to be assigned. The proposal of this thesis is to use statistical algorithms in order to find potential patterns in the demands generated in the network. This seeks to reduce the likelihood of blockage due to fragmentation and provide a dynamic optical networks of the future.
The aim of this thesis is to deal with routing and spectrum assignment problem in flexible optical networks.