RT Journal Article
T1 Latency-aware resource orchestration in SDN-based packet over optical flexi-grid transport networks
A1 Fichera, S.
A1 Martínez, R.
A1 Martini, Barbara
A1 Gharbaoui, M.
A1 Casellas, R.
A1 Vilalta, D.R.
A1 Muñoz, R.
A1 Castoldi, P.
AB In the upcoming 5G networks and followingthe emerging Software Defined Network/NetworkFunction Virtualization (SDN/NFV) paradigm, demandedservices will be composed of a number ofvirtual network functions that may be spread acrossthe whole transport infrastructure and allocated indistributed Data Centers (DCs). These services willimpose stringent requirements such as bandwidthand end-to-end latency that the transport networkwill need to fulfill. In this paper, we present an orchestrationsystem devised to select and allocate virtualresources in distributed DCs connected through amulti-layer (Packet over flexi-grid optical) network.Three different on-line orchestration algorithms areconceived to accommodate the incoming requests bysatisfying computing, bandwidth and end-to-end latencyconstraints, setting up multi-layer connections.We addressed end-to-end latency requirements byconsidering both network (due to propagation delay)and processing delay components. The proposed algorithmshave been extensively evaluated and assessed(via a number of figures of merit) through experimentaltests carried out in a Packet over OpticalFlexi-Grid Network available in the ADRENALINEtestbed with emulated DCs connected to it.
PB IEEE
SN 1943-0620
YR 2019
FD 2019-04-23
LK https://hdl.handle.net/10016/28426
UL https://hdl.handle.net/10016/28426
LA eng
NO This work has been partially funded by the EC H2020 5GTransformer Project (grant No. 761536).
DS e-Archivo
RD 5 jul. 2024