Abstract
The upstream transmission of bulk data files in Ethernet passive optical
networks (EPONs) arises from a number of applications, such as data backup
and multimedia file upload. Existing upstream transmission approaches lead
to severe delays for conventional packet traffic when best effort file and
packet traffic are mixed. We propose and evaluate an exclusive interval for
bulk transfer (EIBT) transmission strategy that reserves an EIBT for file
traffic in an EPON polling cycle. We optimize the duration of the EIBT to
minimize a weighted sum of packet and file delays. Through mathematical delay
analysis and verifying simulation, we demonstrate that the EIBT approach preserves
small delays for packet traffic, while efficiently serving bulk data file
transfers.
© 2012 IEEE
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