Topology optimization for hybrid optical/wireless access networks

Authors:
Ilario Filippini;Matteo Cesana
Affiliations:
Politecnico di Milano, Dipartimento di Elettronica e Informazione Piazza Leonardo da Vinci, 32, 20133 Milano, Italy;Politecnico di Milano, Dipartimento di Elettronica e Informazione Piazza Leonardo da Vinci, 32, 20133 Milano, Italy
Venue:
Ad Hoc Networks
Year:
2010

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Abstract

Hybrid Wireless-Optical Broadband Access Networks (WOBANs) are gauging momentum as flexible, bandwidth-effective, and cost-effective solutions for providing connectivity to residential users in metropolitan areas. In this work, we address the issue of designing the topology of deployed WOBANs. Namely, we consider the case where the coverage of a Ethernet-based Passive Optical Network (EPON) is extended by an additional wireless segment which features multi-hop wireless links operated either according to the IEEE 802.11 standard, or to the IEEE 802.16 one. We propose a mathematical programming model which optimizes the overall WOBAN topology in terms of deployment cost, while accounting for the specific traffic requirements of the residential users, and the specific features of the technological components. The potentials of the proposed model are showcased by deriving and commenting numerical results obtained when planning realistic WOBAN scenarios.