Performance evaluation of partition scheme with first-last fit spectrum allocation for elastic optical networks

This paper evaluates the performance of partition scheme with first-last fit spectrum allocation for elastic optical networks. The scheme intends to increase the number of contiguous aligned available slots, and hence suppresses the blocking probability. The partition approach creates more aligned available slots by separating the spectrum allocation of the non-disjoint connections. The first-last fit allocation policy creates more contiguous aligned available slots between two partitions. Simulation results show that the partition approach with first-last fit allocation policy provides lower blocking probability than that of the non-partition approach and the partition approach with other spectrum allocation policies. Furthermore, we observe that the performance of the partition scheme with first-last fit spectrum allocation in terms of admissible traffic improves when the number of partitions reduces.