Modelling packet insertion on a WSADM ring

Annie Gravey (1, 2) , D. Amar (3) , Philippe Gravey (3) , Michel Morvan (3) , Bogdan Uscumlic (4) , Dominique Chiaroni (4)

1 ADOPNET - Advanced technologies for operated networks
2 IMT Atlantique - INFO - Département Informatique
3 IMT Atlantique - OPT - Département Optique
4 Nokia Bell Labs [Nozay]

The WDM slotted Add/Drop Multiplexer (WSADM) technology relies on time slotted WDM rings, where a slot can carry a single WDM packet. All stations can insert and receive these WDM packets. This differs from previous architectures in which packets were carried over a single wavelength, while multiple packets could be carried in a single slot, thus taking advantage differently of the WDM dimension. The WSADM architecture is expected to reduce costs by exploiting low cost technologies. We propose mathematical models for evaluating the performance offered by WSADM optical packet rings, under two different packet insertion policies. In the slot reservation mode, a station can only use the slots that are periodically reserved for its exclusive usage. In the opportunistic insertion mode, a station can use any slot that is neither reserved, nor already occupied. These modes are bench-marked with a channel reservation mode in which each wavelength is dedicated to a single station.

Mots clés: Optical Packet Switching; Metropolitan Area Network; Network Performance; Wavelength Division Multiplexing

Domaines: Réseaux et télécommunications [cs.NI]; Probabilités [math.PR]

Annie Gravey, D. Amar, Philippe Gravey, Michel Morvan, Bogdan Uscumlic, et al.. Modelling packet insertion on a WSADM ring. 22nd International Conference on Optical Network Design and Modeling (ONDM 2018), May 2018, Dublin, Ireland. ⟨10.23919/ONDM.2018.8396111⟩. ⟨hal-01847654⟩