Dynamic interleaved slotted ALOHA: a multiple-access protocol for wavelength-division-multiplexed photonic networks

Michael Carrato; Patrick W. Dowd

doi:10.1117/12.141076

9 February 1993 Dynamic interleaved slotted ALOHA: a multiple-access protocol for wavelength-division-multiplexed photonic networks

Michael Carrato, Patrick W. Dowd

Author Affiliations +

Proceedings Volume 1784, High-Speed Fiber Networks and Channels II; (1993) https://doi.org/10.1117/12.141076
Event: Fibers '92, 1992, Boston, MA, United States

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.

Citation Download Citation

Michael Carrato and Patrick W. Dowd "Dynamic interleaved slotted ALOHA: a multiple-access protocol for wavelength-division-multiplexed photonic networks", Proc. SPIE 1784, High-Speed Fiber Networks and Channels II, (9 February 1993); https://doi.org/10.1117/12.141076

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