Abstract
Dynamic bandwidth allocation (DBA) is an open and hot topic in the Ethernet
passive optical network (EPON), which is regarded as one of the best choices
for next-generation access networks. This paper proposes an estimation-based
scheme, interleaved polling with adaptive cycle time with grant estimation
(IPACT-GE), for effective upstream channel sharing among multiple optical
network units (ONUs) in EPONs. By estimating the amount of new packets arriving
between two consecutive pollings and granting ONUs with extra estimated amount,
the proposed IPACT-GE scheme can achieve shorter waiting delay and less buffer
occupancy at the light load than IPACT, a significant DBA scheme in EPONs.
Moreover, when combined with the strict priority queue (SPQ) mechanism to
provide differentiated services, IPACT-GE can greatly mitigate the light load
penalty that is obvious in the IPACT solution combined with SPQ.
© 2008 IEEE
PDF Article
More Like This
Cited By
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription