Queueing behavior under flow control at the subscriber-to-network interface for high speed metropolitan area networks

A credit manager algorithm (CMA) is introduced and used to control the flow of packets between a subscriber station (or a local area network) and the access to a high-speed metropolitan area network. The parameters of the algorithm are used to regulate the mean throughput and the level of burstiness at the subscriber-to-network interface (SNI). Simulation results are presented for the average system size at the SNI, representing the packet delays at the sender's buffer. The regulated output traffic across the SNI is statistically characterized by categorizing its states into three modes; idle, burst, and restricted modes. Presented also is a model for the queueing behavior of an asynchronous transfer mode (ATM)-type system, where single segment packets (cells) are served. A numerical method is used to solve for the underlying system state probabilities.<
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