Performance of a Window-Based Token Protocol Supporting ATM-Like Bursty Traffic

概要

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This study presents a novel window-based token protocol which supports two priority levels of ATM-like bursty traffic. The proposed protocol ensures that packets arriving during a given window period are always transmitted prior to those arriving during subsequent window periods. During which periods, high priority(delay-sensitive)packets are served by a nonpreemptive priority service discipline. Under this window-based token protocol, the delay bounds for packets of both priority levels are derived when the traffic streams satisfy the traffic descriptors. Hence, a call admission control policy based on delay bounds can be employed to guarantee QoS parameters such as the packet delay and packet loss-free requirement for each traffic stream. The protocol proposed herein can achieve tighter delay bounds than the IEEE 802.5 token protocol and the timed token protocol used in FDDI, particularly for high priority bursty traffic, thereby making it highly attractive for supporting not only real-time multimedia VBR or CBR services such as in ATM networks but also ATM encapsulation such as in Cells in Frames (CIF) protocol.
社団法人電子情報通信学会の論文
1998-03-25