A New Token-Based Channel Access Protocol for Wavelength Division Multiplexed Multiprocessor Interconnects

• Published in: Journal of parallel and distributed computing Vol. 60; no. 2; pp. 169 - 188
• Main Authors: Ha, Joon-Ho, Pinkston, Timothy Mark
• Format: Journal Article
• Language: English
• Published: San Diego, CA Elsevier Inc 01.02.2000; Elsevier
• Subjects: Access methods and protocols, osi model; Applied sciences; channel access control protocol; Exact sciences and technology; optical broadcast-and-select network; shared-memory multiprocessor; Telecommunications; Telecommunications and information theory; Teleprocessing networks. Isdn; WDM; WDM; channel access control protocol; shared-memory multiprocessor; optical broadcast-and-select network; Time division multiple access; Experimental result; Dynamic allocation; System performance; Telecommunication network; Network architecture; Wavelength division multiplexing; Numerical simulation; Access protocol; Shared memory; Optical interconnection
• ISSN: 0743-7315; 1096-0848
• DOI: 10.1006/jpdc.1999.1599

This paper presents a new token-based channel access protocol for wavelength division multiplexed optically interconnected multiprocessors. Our empirical study of access protocols based on slotted time division multiplexed data and control channels reveals that such protocols typically suffer from excessive slot synchronization latency due to static slot preallocation. The proposed token-based time division multiple access protocol minimizes latency by allowing dynamic allocation of slots to use channels efficiently. Simulation results indicate that the proposed scheme can significantly increase the performance for protocols based on preallocation and also those based on preallocation-controlled reservation of multiple channels.