Optimum theorems for combining QoS metrics to reduce computation time in nodes (routers) is proposed based on fundamental theorems on QoS metrics. The proposed theorems unify selection of metrics and provide the methods for reducing overheads at the nodes due to performance metrics. Specified metrics are used to define QoS target, benefit, link and route availability functions. It is shown that for certain values of loss probability Lf the QoS target can be approximated as linear and for higher losses (about 10 times larger) the target is exponential.
Johnson I. Agbinya