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Proceedings Paper

Dynamic interleaved slotted ALOHA: a multiple-access protocol for wavelength-division-multiplexed photonic networks
Author(s): Michael Carrato; Patrick W. Dowd
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Paper Abstract

This paper introduces a preallocation-based multiple access protocol for wavelength-division multiplexed (WDM) optically interconnected passive star-coupled networks. The objective is to combine the strengths of two other preallocation-based strategies, interleaved slotted ALOHA (I-SA) and interleaved time division multiple access with multiple buffers (I-TDMA*), while minimizing their inherent weaknesses. I-SA is a random access protocol which features good delay but poor maximum throughput. I-TDMA* is a static protocol which has excellent throughput but suffers from synchronization delay at low arrival rates. The new protocol, dynamic interleaved slotted ALOHA (DISA), is a random access protocol which combines the high capacity of I-TDMA* with the excellent latency characteristic of I-SA. This is achieved through a flow control mechanism which throttles the amount of traffic transmitted through the network based on the local load characteristics. No global information (other than packet acknowledgments) is necessary to implement this flow control mechanism; each node intelligently restricts network transmissions based only on the frequency of local packet arrivals and collisions. The protocol is described and discrete event simulation is used to compare the performance of DISA to I-SA and I-TDMA* over a range of system, load, and protocol parameters.

Paper Details

Date Published: 9 February 1993
PDF: 12 pages
Proc. SPIE 1784, High-Speed Fiber Networks and Channels II, (9 February 1993); doi: 10.1117/12.141076
Show Author Affiliations
Michael Carrato, SUNY/Buffalo (United States)
Patrick W. Dowd, SUNY/Buffalo (United States)

Published in SPIE Proceedings Vol. 1784:
High-Speed Fiber Networks and Channels II
Kadiresan Annamalai, Editor(s)

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