Scalable Damper-based Deterministic Networking

• Published in: 2022 18th International Conference on Network and Service Management (CNSM) pp. 367 - 373
• Main Authors: Naghmouchi, M. Yassine, Ren, Shoushou, Medagliani, Paolo, Martin, Sebastien, Leguay, Jeremie
• Format: Conference Proceeding
• Language: English
• Published: IFIP 31.10.2022
• Subjects: Admission control; Bounded delay; Damper; Deterministic Networking; Jitter; Logic gates; Regulators; Routing; Scheduling; Shock absorbers; Throughput; Zero jitter
• ISSN: 2165-963X
• DOI: 10.23919/CNSM55787.2022.9964638

With 5G networking, deterministic guarantees are emerging as a key enabler. In this context, we present a scalable Damper-based architecture for Large-scale Deterministic IP Networks (D-LDN) that meets required bounds on end-to-end delay and jitter. This work extends the original LDN [1] architecture, where flows are shaped at ingress gateways and scheduled for transmission at each link using an asynchronous and cyclic opening of gate-controlled queues. To further relax the need for clock synchronization between devices, we use dampers, that consist in jitter regulators, to control the burstiness flows to provide a constant target delay at each hop. We introduce in details how data plane functionalities are implemented at all nodes (gateways and core) and we derive how the end-to-end delay and jitter are calculated. For the control plane, we propose a column generation algorithm to quickly take admission control decisions and maximize the accepted throughput. For a set of flows, it determines acceptance and selects the best shaping and routing policy. Through a proof-of-concept implementation in simulation, we verify that the architecture meets promised guarantees and that the control plane can operate efficiently at large-scale.