Real-time control and management plane for edge-cloud deterministic and dynamic networks

Abstract

The dynamicity of today’s optical networks is far from its potential. Optical components, such as fast-tunable lasers or semiconductor optical amplifiers, can react on a nanosecond time scale, while the reconfiguration time of optical networks is many orders of magnitude larger, normally above a hundreds of milliseconds timescale. In this work, we address this gap with real-time control plane strategies that enhance the responsiveness of optical networks, specifically in the context of time-critical applications where service determinism is of paramount importance. This context represents an additional challenge since the infrastructure necessary to provide time-wise guarantees increases the complexity of the system under control. We describe in detail the real-time control plane for deterministic and dynamic networks and assess its value through experimental evaluation for the first time to our knowledge of a complete real-time control plane within a multinetwork segment testbed. We prove submillisecond overall reconfiguration time for multinetwork segment environments spanning distances of the order of tens of kilometers.

RT-TelSurg: Real Time Telesurgery Using SDN, Fog, and Cloud as Infrastructures

“…-For the telesurgery application, our proposed architecture has used the latest and well-known infrastructures as SDN, Could, and Fog like [3], [9], [1], [8], and [10].…”

“…So far, similar statistical modeling in telesurgery applications has not been observed in previous studies. Most of the previous research, such as [6], [7], and [8], has used optimization methods for analytical modeling. However, since the implementation of these algorithms is generally time-consuming, we have tried to use more appropriate methods for analytical modeling in this study.…”

“…They also used AI techniques to predict the physician's following behavior unique to her/him. In [8], using SDN and 5G, the network was configured as if each stream was sent through a dedicated fiber, and this configuration was done quickly to support most dynamic applications. Finally, the researcher evaluated the proposed solution for telesurgery.…”

“…Nevertheless, we can be sure that the tested scenario is consistent with the reality of Internet traffic. [7] and [8], which we implemented in detail for a fair comparison with RT-TelSurg. These papers have been selected for emulation and comparison with RT-TelSurg because, as can be seen in Table 2, they are very similar to our approach in terms of techniques.…”