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Proceedings Paper

Upstream traffic multiplexing in photonic ATM access networks
Author(s): Giovanna Girola; Guido A. Maier; Mario Martinelli; Achille Pattavina
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Paper Abstract

For the future development of residential broadband telecommunication services the present access infrastructure must be upgraded. Fiber-To-The-Home (FTTH) optical networks, though still expensive today, appear to be a future-proof solution. FTTH networks based on passive optical Remote Nodes (RN) and supporting ATM switching (ATM-PONs) have been demonstrated and are going to be standardized. In these networks the optical hardware in the RN is very simple, but a multiple access protocol is needed for upstream traffic control. In most protocols proposed in literature the control is performed electronically in a centralized way by the Central Office. In this paper we study multiple access schemes for FTTH networks which perform upstream traffic control in a distributed way with the intervention of the user Optical Network Terminations (ONTs) and of the RN only. We will also consider the case, based on recent research in photonic packet switching, in which the RN is able to perform all-optical ATM-multiplexing. We will employ ONT-RN signalling to make the relatively expensive RN optical buffer co-operate with the electronic buffers located in the ONTs. The different solutions presented will be compared by simulating the network behavior under various traffic conditions. In conclusion, in this work we evaluate performance advantages achievable in FTTH networks by increasing the optical complexity of the RN and by introducing control schemes which allow a distributed upstream traffic management and, in the case of an RN able to perform all-optical ATM-multiplexing, the co-operation of the RN buffer with the ONT buffers.

Paper Details

Date Published: 7 October 1998
PDF: 14 pages
Proc. SPIE 3531, All-Optical Networking: Architecture, Control, and Management Issues, (7 October 1998); doi: 10.1117/12.327052
Show Author Affiliations
Giovanna Girola, CoreCom (Italy)
Guido A. Maier, CoreCom (Italy)
Mario Martinelli, Politecnico di Milano (Italy)
Achille Pattavina, Politecnico di Milano (Italy)


Published in SPIE Proceedings Vol. 3531:
All-Optical Networking: Architecture, Control, and Management Issues
John M. Senior; Chunming Qiao, Editor(s)

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