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Conference Papers Year : 2005

Efficient Bandwidth Sharing in Bus-Based Optical Access Networks

Nizar Bouabdallah
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Guy Pujolle


Packet-based optical access ring is becoming a promising solution in metropolitan networks. Its performance depends mainly on how optical resource sharing takes place among the different competing access nodes. In such a network fairness issues are likely to arise between upstream and downstream nodes competing to access a common data channel. This paper provides a new protocol called TCARD (Traffic Control Architecture using Remote Descriptors), based on a preventive reservation scheme, to alleviate the fairness problems. The reservation process consists in forcing the upstream nodes to ensure enough available bandwidth for downstream nodes’ transmission purpose. Moreover, we develop analytical models in order to assess the access delay when TCARD is enabled. The analytical and simulation results show how the proposed solution alleviates the performance degradation and the resource sub-utilization while achieving fairness among bus nodes.

Dates and versions

hal-01491396 , version 1 (16-03-2017)



André-Luc Beylot, Nizar Bouabdallah, Guy Pujolle. Efficient Bandwidth Sharing in Bus-Based Optical Access Networks. 4th International IFIP-TC6 Networking Conference (Networking 2005), IFIP Technical Committee 6 (TC6 - Communications Systems), May 2005, Waterloo, Canada. pp.1231-1242, ⟨10.1007/11422778_99⟩. ⟨hal-01491396⟩
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