Feedback & Pricing in ATM Networks
Admission control and congestion control can provide traffic guarantees in ATM networks. However some users may not be able to describe their traffic accurately enough for the network to provide such guarantees. By sending a dynamic feedback signal about the current utilisation of network resources, the network could provide loss guarantees to users who respond appropriately, even without prior traffic descriptors. One possible feedback signal is a price per unit of network resource, based on the network load level : when the load is high, the price is high, and when the load is low, the price is low or zero. We outline a distributed iterative pricing algorithm, and show through simulations that it can simultaneously increase both network and economic efficiency. We also explore some arguments often raised against usage-sensitive pricing, and provide some counter-arguments.
KeywordsATM Networks Pricing Dynamic Feedback Congestion Control
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