Research Article
A new proposal to reduce burst contention in optical burst switching networks
@INPROCEEDINGS{10.1109/ICBN.2005.1589730, author={Anna Agusti-Torra and Cristina Cervello-Pastor }, title={A new proposal to reduce burst contention in optical burst switching networks}, proceedings={2nd International ICST Conference on Broadband Networks}, publisher={IEEE}, proceedings_a={BROADNETS}, year={2006}, month={2}, keywords={}, doi={10.1109/ICBN.2005.1589730} }- Anna Agusti-Torra
Cristina Cervello-Pastor
Year: 2006
A new proposal to reduce burst contention in optical burst switching networks
BROADNETS
IEEE
DOI: 10.1109/ICBN.2005.1589730
Abstract
In this work, we propose a mechanism to reduce the burst blocking probability in an OBS network formed by several stars interconnected by a ring. An offset windows scheme is introduced to assure that the lack of resources for a burst transmission is detected as close as possible to the ingress nodes, i.e. burst contention is only probable at the first core node of the ring that processes a control packet. The proposal guarantees that the burst transmission will be successful once the transmission has been allocated on the first link of the ring; thus, network-core resources are not wasted. Nevertheless, an additional mechanism is needed to guarantee the absence of burst losses before the reservation of resources inside the core network. A retransmission scheme and an OCDMA-based mechanism are introduced in order to achieve this objective