DTA

Digital Theses Archive

 

Tesi etd-08202020-121548

Type of thesis
Master univ. I liv.
Author
TADESSE, TEWODROS GASHAW
E-mail address
tewodrosg.tadesse@gmail.com
URN
etd-08202020-121548
Title
Achieving Deterministic Latency for Optical Metro Network with Edge Computing
Structure
Istituto di Tecnologie della Comunicazione, dell'Informazione e della Percezione
Course
Corsi Alta Formazione - PHOTONIC INTEGRATED CIRCUITS, SENSORS AND NETWORKS (PIXNET)
Committee
relatore Prof. CASTOLDI, PIERO
Relatore Prof. CALABRETTA, NICOLA
Keywords
  • 5G
  • data center
  • deterministic latency
  • jitter
Exam session start date
;
Availability
completa
Abstract
The future optical metro network with edge computing should provide low and deterministic latency service to support mission-critical applications with the other traffics. Due to a lack of flexibility, high latency, and jitter, the conventional network architecture can't fulfill these critical applications' QoS requirements. Thus, we need a dynamic and fast reconfigurable network. Using the novel metro network model introduced in our colleagues' recent study, in this paper, we proposed and implemented a prioritization method at the scheduler and jitter compensation mechanism in the top-of-rack (TOR) switch to achieve deterministic latency for mission-critical applications. We numerically investigate the performance of the proposed methods via the OMNET++ simulator in terms of latency, jitter, and packet loss ratio under different edge node locations. The numerical analysis also includes the other two application types (Massive Internet of Things, and content delivery network) to examine the impact of the methods on the remaining traffic flow. Considering a typical metro access network topology with 20 nodes that serves around 1 million population, we have achieved 65 μs deterministic latency with 37 ps jitter, and 8E-7 packet loss ratio at load 0.5 for mission-critical applications by allocating ten edge computing nodes.
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