QoS Assuring Access Control Protocols for Hyperchannels in SMART Network

J. Chen, S.Q. Zheng (USA), and A. Gumaste (India)

Keywords

Multiaccess, packet scheduling, output queuing, MAC, protocol, algorithm, QoS, WDM, optical network, SMART network, hyperchannel.

Abstract

We show the equivalence between OQ packet schedul ing algorithms and a class of multi-access protocols for hyperchannels in a Scalable Multi-Access Reconfigurable Transport (SMART) network [12] by showing that any OQ packet scheduling algorithm can be converted to a hyper channel multi-access protocol without loosing theoretical QoS properties under certain conditions that are practically not difficult to satisfy. This equivalence serves as a ba sis for designing a class of QoS assuring hyperchannel ac cess control protocols and medium access control (MAC) protocols for any shared-medium (such as electrical bus, wireless, etc.) communications systems. As an example, we extend a known OQ scheduling algorithm SRR to one called TSRR and show its feasibility of being used as a centralized hyperchannel multi-access protocol. We also introduce a centralized/distributed hybrid version of TSRR protocol which involves extensive parallel/distributed pro cessing techniques.

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