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New strategies to confront with the threat of capacity exhaustion


Traffic generated by the internet has grown at the rate of about 100% a year since it was first measured, but has dominated the communication networks since the turn of the century. The networks prepared for this critical moment with the deployment of a large optical infrastructure, initially over-dimensioned. The advent of the WDM technology started a drive towards bandwidth mining, which is now reaching the effective occupation of the amplifiers gain bandwidth. Hence the emergence of the elastic optical networks as the first step to avoid the capacity crunch through enhancement of the network spectral efficiency. With this aim, two strategies are used: distance adaptiveness, through the adaptive ability of choosing the most spectrally efficient modulation scheme that is able to provide the required noise immunity; and flexibility in the allocation of spectrum to the user in order to avoid waste. A second step will deploy new fibers with several spatial modes, such that each mode maybe modulated independently. However, in order to face the energy bottleneck, it will be necessary to limit the traffic itself through the adoption of appropriate protocols in the higher layers, eliminating unnecessary or redundant traffic through datacentric addressing. Finally, traffic management will have to be aligned with the neutrality and other directives in order to preserve both the public nature of future internet and its promise of unceasing innovation. Our project will contribute to the success of these strategies through academic studies conducted in an interdisciplinary environment enriched with international cooperation. (AU)

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Scientific publications (10)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
BARBOSA, FABIO APARECIDO; ROSSI, SANDRO M.; MELLO, DARLI A. A. Phase and Frequency Recovery Algorithms for Probabilistically Shaped Transmission. Journal of Lightwave Technology, v. 38, n. 7, p. 1827-1835, APR 1 2020. Web of Science Citations: 0.
MELLO, DARLI A. A.; SRINIVAS, HRISHIKESH; CHOUTAGUNTA, KARTHIK; KAHN, JOSEPH M. Impact of Polarization- and Mode-Dependent Gain on the Capacity of Ultra-Long-Haul Systems. Journal of Lightwave Technology, v. 38, n. 2, p. 303-318, JAN 15 2020. Web of Science Citations: 0.
QUEIROZ, JOEL CARLOS FARIAS; BONANI, LUIZ HENRIQUE; CERRONI, WALTER; CALLEGATI, FRANCO. Inter-Routes Fairness Strategies Inspired by Trunk Reservation Technique. IEEE COMMUNICATIONS LETTERS, v. 23, n. 12, p. 2284-2287, DEC 2019. Web of Science Citations: 0.
DOSI, G.; PEREIRA, M. C.; ROVENTINI, A.; VIRGILLITO, M. E. What if supply-side policies are not enough? The perverse interaction of flexibility and austerity. JOURNAL OF ECONOMIC BEHAVIOR & ORGANIZATION, v. 162, p. 360-388, JUN 2019. Web of Science Citations: 2.
ASSIS, K. D. R.; ALMEIDA, JR., R. C.; WALDMAN, H.; SANTOS, A. F.; ALENCAR, M. S.; REED, M. J.; HAMMAD, A.; SIMEONIDOU, D. SLA Formulation for Squeezed Protection in Elastic Optical Networks Considering the Modulation Format. JOURNAL OF OPTICAL COMMUNICATIONS AND NETWORKING, v. 11, n. 5, p. 202-212, MAY 2019. Web of Science Citations: 1.
DOS SANTOS, LAILSON F.; FERREIRA, FILIPE M.; ELLIS, ANDREW D.; MELLO, DARLI A. A. Filter Bank Multi-Sub-Band Transmission for Optical Systems With Mode Multiplexing. IEEE Photonics Journal, v. 11, n. 2 APR 2019. Web of Science Citations: 0.
BONANI, L. H.; QUEIROZ, J. C. F.; ABBADE, M. L. F.; CALLEGATI, F. Load Balancing in Fixed-Routing Optical Networks with Weighted Ordering Heuristics. JOURNAL OF OPTICAL COMMUNICATIONS AND NETWORKING, v. 11, n. 3, p. 26-38, MAR 2019. Web of Science Citations: 2.
JATOBA-NETO, ALAELSON C.; MELLO, DARLI A. A.; ROTHENBERG, CHRISTIAN E.; ARIK, SERCAN O.; KAHN, JOSEPH M. Scaling SDM Optical Networks Using Full-Spectrum Spatial Switching. JOURNAL OF OPTICAL COMMUNICATIONS AND NETWORKING, v. 10, n. 12, p. 991-1004, DEC 2018. Web of Science Citations: 0.
MELLO, DARLI A. A.; BARBOSA, FABIO APARECIDO; REIS, JACKLYN DIAS. Interplay of Probabilistic Shaping and the Blind Phase Search Algorithm. Journal of Lightwave Technology, v. 36, n. 22, p. 5096-5105, NOV 15 2018. Web of Science Citations: 4.
ROZENTAL, VALERY; KONG, DEMING; CORCORAN, BILL; MELLO, DARLI; LOWERY, ARTHUR J. Filtered Carrier Phase Estimator for High-Order QAM Optical Systems. Journal of Lightwave Technology, v. 36, n. 14, p. 2980-2993, JUL 15 2018. Web of Science Citations: 1.
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
WALDMAN, Helio. Subband-based transmission for optical systems with modal multiplexing. 2020. Doctoral Thesis - Universidade Estadual de Campinas, Faculdade de Engenharia Elétrica e de Computação.

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