Abstract
In this paper, we propose a wavelength-routed multicast packet switch
using a set of fiber delay lines as a shared buffer for both unicast and
multicast packets. To avoid multicast packet contention, a multicast packet
could be replicated in multiple
timeslots by means of multi-wavelength conversion in conjunction with the
shared-FDL buffer. Moreover, a packet scheduling technique is designed to
assist the operation of the newly proposed switch. We investigate the
traffic performance and the complexity in terms of component counts of the
newly proposed switch in comparison with our previously reported multicast
switch and the broadcast-and-select switch by simulation. Performance
evaluation shows that the proposed switch with assistance of the packet
scheduling technique can effectively avoid the performance deterioration
caused by the increase of multicast traffic, leading to a much better
performance than our previously reported multicast switch. In addition, the
results show that the proposed switch exhibits an efficient and
cost-effective configuration for packet multicasting over other switch
architectures.
© 2010 IEEE
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