schedule

SCHEDULE ACTIVITIES
08:30 AM Registration
09:00 AM Event Opening
Prof. José Roberto Piqueira – Director of EPUSP
Prof. Anna Helena Reali Costa –Vice Head of the Department PCS
Prof. Regina Melo Silveira – Workshop General Coordinator
Prof. José Roberto de Almeida Amazonas – Workshop Organizing Committee
09:20 AM On The Performance of Serving Multicast Requests on Elastic Optical Networks
Dr. Marc Ruiz (UPC-Barcelona) (Videoconference)
10:00 AM Resources Allocation Issues in Elastic Optical Networks
Joana Sócrates Dantas (EPUSP)

In a dynamic EON scenario, the constant setup and release of connections creates spectrum fragmentation which increases blocking probability in the network and decreases spectrum allocation efficiency. In fact resources allocation issues relates do bandwidth requirement values. Depending on connection requests bandwidth requirement value heterogeneity and proportion, spectrum fragmentation, blocking probability and service provisioning fairness may be more or less intense in an EON. In this session we will explain EON issues related to resources allocation and will present dynamic network simulations that illustrate and verify these issues occurrences.
10:40 AM Coffee Break (20m)
11:00 AM Flexible, Dynamic and Efficient Optical Transport Networks in Support of Emerging Services and Applications
Prof Dr. Slavisa (Institute of Telecommunications, Vienna University of Technology) (Videoconference)

Recent developments in cloud computing, consumer devices and wireless networks as well as the growing importance of machine-to-machine communication set very high requirements on transport networks. Consequently, optical networks of the future will need to become more dynamic, flexible, adaptable and energy efficient.
In this talk, enabling technologies and approaches for future optical networks able to meet the high requirements of future applications in an efficient manner will be presented and discussed. Two important milestones towards future high-capacity, ubiquitous, flexible and energy efficient optical networks are fast and efficient provisioning of high data rate optical paths and development and adoption of advanced network elements and concepts. Also a seamless interoperability and interaction between optical communication systems and other parts of the network is continuously gaining in importance. As an example, optical access networks will play an important role in providing a high-capacity and future-proof backhaul for 5G wireless networks. Additionally, introduction of the network function virtualization (NFV) concept and software-defined networking (SDN) in the optical domain and development of advanced optical interconnects for data centers will pave the way for high-performance optical clouds.
Besides providing high performance, the use of advanced optical communication systems can also lead to improved energy efficiency. The potential for the energy efficiency improvement can be maximized by using advanced optical components and systems in an adequate way on one hand and optimizing the network concept on the other. We will briefly address and discuss selected approaches for improving energy efficiency.
11:40 AM A Paths Algebra Framework for Routing and Resources Assignment in EONs
Prof. Dr. José Roberto Amazonas (EPUSP)

Routing and resources assignment represent one of the major challenges for Elastic Optical Networks (EONs). In this work we propose a general mathematical framework based on paths algebra that allows the implementation of differentiated services according to different policies. The framework enables to consider simultaneously different metrics associated to the optical links. Any number of linear and non-linear metrics can be used. In this way, Quality of Service (QoS); Quality of Transport (QoT), Quality of Network Economics (QoNE), Quality of Energy (QoEn) etc. can be optimized.
12:20 PM Lunch Break (1h:30m)
01:50 PM Optical Superchannels and Optical Systems and Communication Networks New Paradigms
Prof. Dr. Mônica de Lacerda Rocha (USP-SC)

With channel transmission rates exceeding 100 Gb/s, optical systems and networks necessarily go through a new paradigm shift. Hardware operation becomes controlled by software and the flexibility for real-time traffic control becomes crucial over networks. This presentation will give a brief review of the main landmarks and attributes of next-generation systems and networks at the hardware (data plane) and software (control plane) levels.
02:30 PM Transmission and networking activities in the optical technologies division at CPqD
Dr. Miquel Garrich (CPqD)
03:10 PM Coffee Break (20m)
03:30 PM Virtual Network Embedding and its Impact in Routing and Optical Networking
Prof. Dr. Juan Felipe Botero (UEDA-Colombia)

Due to the stagnation of current network architecture, several proposals for Next Generation Network architectures are emerging from the academy and industry. Network Virtualization is an emerging technology that supports a new business model for the Internet architecture based on the Infrastructure as a Service (IaaS) paradigm. The main research challenge in network virtualization is the allocation of virtual demands in physical resources; called Virtual Network Embedding (VNE) problem. Currently, most of the research devoted to solve VNE is technology agnostic so the specifics of a determined network technology (wireless, optical, etc.) are neglected when proposing solutions to solve this problem. However, several approaches have started to deal with this problem in the optical field, this presentation will: 1) describe the VNE problem, 2) explain how it is related to routing, specially in the virtual link mapping phase, and 3) briefly review the literature regarding VNE in optical networks and highlight the main research challenges in this area.
04:10 PM Efficient routing for high capacity, flexible optical networks with different classes of service.
Douglas Aguiar (PadTec)
04:50 PM Greedy geometric routing and robustness measurements in large-scale networks
Profº Dr. Jose L Marzo (Universidad de Girona - Spain)

The growth in number of nodes of networks have a negative impact in their performance. In this paper a compact Greedy Geometric Routing (GGR) is presented. In the proposed GGR, nodes are assigned to coordinates into the word metric space (WMS). As a result, we have a general CR scheme that is shortest path on CG topologies and keep a good trade-off between stretch and space complexity. When multiple failures occur, guaranteeing network robustness to avoid users and services being disconnected is essential. In this paper the taxonomy of robustness metrics in telecommunication networks is extended and a classification of multiple failures scenarios is made.
05:30 PM Workshop Closure