The use of fuzzy metric in QoS based OSPF network
Tan, CK · UCL Discovery (University College London) · 2001
The use of a single metric for adaptive routing is insufficient to reflect the actual state of the link. In general, there is a limitation on the accuracy of the link state information obtained by the routing protocol [1, 2], as the accuracy of the metric is usually predetermined by the network state update interval [3]. Hence it becomes useful if two or more metrics can be associated to produce a single metric that can describe the state of the link more accurately. And this paper investigates how two metrics, the mean link utilisation and the mean link delay, can be related using a simple fuzzy logic algorithm to produce a fuzzy metric that is more 'precise' than either of the single metric.