학술논문
Performance of fixed-length, variable-capacity packets in optical packet-switching networks
Document Type
Periodical
Author
Source
Journal of Optical Communications and Networking J. Opt. Commun. Netw. Optical Communications and Networking, Journal of. 7(7):609-617 Jul, 2015
Subject
Language
ISSN
1943-0620
1943-0639
1943-0639
Abstract
We present the performance of fixed-length, variable-capacity (FL-VC) packets in optical packet-switching (OPS) networks. We show how FL-VC achieves an effective balance between implementation feasibility and performance of the applications using the network. Focusing on metropolitan area networks and real-world file distributions, we also show that an adequate selection of packet duration leads to nearly optimal application throughput with respect to conventional variable-length, fixed-bit-rate packets (VL-FBR), and that this optimal packet duration is robust against changes in the workload. Finally, we show that a single fiber delay line per OPS switch managed by a first-fit scheduler can increase throughput to levels similar to those obtained by random access buffers.