Flow control in virtual circuit-oriented packet-switched computer communication network

Abstract A flow control method in virtual circuit-oriented packet-switched computer communication network is proposed. In a single packet switch a finite number of packet buffers, shared between several output queues, packet arrival rates and lengths of each individual queues to outgoing routes are dynamically restricted, depending upon the queue length and actual packet arrival rate. The main purpose of the packet arrival rate control is to reduce the input of new packets to the node's queue when its length grows, and when the queue length decreases below assumed threshold, is to remove respective restrictions. A simple queueing model is applied to analyze the proposed flow control scheme. To examine some performance tradeoffs of packet switch, simulation program has been elaborated.