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Nick's Project Page - RISE summer 2004 |
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Intern: Nicholas Burgan-Illig, UMass-Amherst
Mentor: Ramesh Rajaduray
Faculty Supervisor: Daniel Blumenthal
Department: ECE |
OPTICAL BURST SWITCHING NETWORKS WITH FORWARD RESOURCE RESERVATION
Optical Burst Switching (OBS) has been proposed as a technique to enable
all-optical networks of the future. Data packets are assembled into bursts and
then disassembled after being switched through the optical network.
Traditional optical networks utilize Optical-Electric-Optical (OEO) translation
at each switch. With OBS, packets are kept entirely in the optical domain. This
greatly reduces latency and increases the speed of the network. Forward Resource
Reservation (FRR) has been proposed as a technique to help reduce latency even
further. Resources are reserved in advance to avoid contention with other bursts,
thereby reducing the probability of burst loss. To reserve resources, prediction
of the burst size and delay is necessary. One prediction technique is to measure
burst size and delays under different input traffic conditions. Once the
conditions are known, it is possible to retrieve data for these conditions and
make predictions for resource reservation. Data from simulations of varying
input traffic conditions have been analyzed to create this summary data.
It is also necessary to create a dedicated FRR signaling system for network
implementation. Programs in C++ have been created to enable such a system,
involving two interlinking queues communicating over a channel to request and
process resource requests.
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