Complexity and Flexible Grid Networks
- Morea A.
Flexible grids promise to revolutionize the net- work design and control plane of future optical networks by providing increased adaptability of spectral resources to heterogeneous network conditions. Unfortunately, ﬂexibility is often provided at the cost of additional complexity in the network management. In this paper, we consider the optimization of routing and spectrum allocation in FlexiGrid Networks and explore the trade-off between network cost and problem complex- ity according to the following aspects: trafﬁc grooming, regeneration, modulation/baud-rate assignment. We provide slice-based and channel-based Integer Linear Programming models which cover multiple network settings and compare their performance in terms of computational complexity and minimization of the overall spectrum occupation or transceiver utilization. Numerical results show TBD